CN118202190A

CN118202190A - Control module for lighting fixture

Info

Publication number: CN118202190A
Application number: CN202280072886.3A
Authority: CN
Inventors: A·布塔尼; R·卡姆登; K·加斯乔; S·菲利普斯; K·米尔纳
Original assignee: Lutron Electronics Co Inc
Current assignee: Lutron Electronics Co Inc
Priority date: 2021-10-22
Filing date: 2022-10-21
Publication date: 2024-06-14

Abstract

A control module configured to be mounted in a fixture opening of a lighting fixture may include an antenna (e.g., a dipole antenna) with a majority of a primary radiating structure of the antenna being located external to the lighting fixture when mounted to the lighting fixture. The control module may include a detector positioned to receive infrared energy through the lens to detect an occupancy or empty condition. The antenna may include two elements electrically connected in a dipole antenna configuration and including respective curved portions positioned to curve around the detector outside the lighting fixture. The control module may include a housing including clips, each clip having teeth for attaching the control module within the fixture opening. The clips may be positioned adjacent to one another and the teeth may be staggered relative to one another such that one tooth of either clip engages the instrument opening at a time.

Description

Control module for lighting fixture

Cross Reference to Related Applications

The present application claims the benefit of U.S. provisional patent application No. 63/270,896 filed on month 22 of 2021 and U.S. provisional patent application No. 63/341,687 filed on month 13 of 2022, the entire disclosures of which are hereby incorporated by reference.

Background

For example, a user environment such as a home or office building may be configured using various types of load control systems. The lighting control system may be used to control a lighting load in a user environment. A motorized window treatment control system may be used to control the natural light provided to the user's environment. A heating, ventilation and air conditioning (HVAC) system may be used to control temperature in a user environment.

Each load control system may include various control devices including an input device and a load control device. The load control device may receive digital messages from one or more of the input devices for controlling the electrical load, which may include load control instructions. The load control device may receive the digital message via a Radio Frequency (RF) signal. Each of the load control devices may be capable of directly controlling an electrical load. The input device may be capable of indirectly controlling the electrical load via digital messages sent to the load control device.

Disclosure of Invention

As described herein, a control module configured to be mounted in a fixture opening of a housing of a lighting fixture may include an antenna (e.g., a dipole antenna) with a majority of a primary radiating structure of the antenna being located external to the lighting fixture when mounted to the lighting fixture. The control module may include: a housing defining a central axis extending in a longitudinal direction and configured to be received in the fixture opening of the lighting fixture; and a cover portion connected to the housing and covering the housing opening at a first end of the housing. The control module may further include: at least one printed circuit board housed within the housing and having control circuitry and wireless communication circuitry mounted thereon; and a detector positioned to receive infrared energy through a lens in the aperture of the cover portion. The detector may be electrically coupled to the control circuit such that the control circuit is configured to detect at least one of an occupied or unoccupied condition in a space surrounding the control module. The antenna of the control module may include a first antenna element and a second antenna element electrically connected to the wireless communication circuit in a dipole antenna configuration. Each of the first and second antenna elements may extend from the at least one printed circuit board to a respective curved portion located between the cover portion and the housing and curved about the detector. The control circuit may be configured to cause the wireless communication circuit to transmit a message in a wireless signal via the antenna.

The detector may include one or more thermoelectric elements responsive to the infrared energy and a housing having a front surface with a first opening through which the thermoelectric elements receive the infrared energy. The detector may be located at a point where the energy of the wireless signal transmitted by the antenna is at a maximum level. The housing of the detector may be electrically conductive and may be coupled to a circuit common of the control module. The opening of the housing of the detector may be sized to shield the thermoelectric element from wireless signals emitted by an antenna in response to the wireless communication circuit. Further, the detector may include a shield located above the front surface of the housing of the detector. The shield may have an opening disposed over the opening of the housing and may be electrically coupled to a circuit common of the control module. The shield may be electrically connected to the housing and circuit common of the detector when the housing of the detector is electrically conductive and coupled to the circuit common of the control module. When the housing of the detector is non-conductive, the shield may include a conductive strap configured to couple to a circuit common of the control module. The opening of the shield is sized to shield the thermoelectric element from wireless signals emitted by an antenna in response to the wireless communication circuit.

Additionally, the housing may include a first clip and a second clip configured to mount the control module within the equipment opening. The first clip and the second clip may be positioned adjacent to each other. Each of the first clip and the second clip may include a plurality of teeth configured to engage a structure around the fixture opening. The teeth of the first clip and the second clip may be staggered relative to each other such that one tooth of the first clip or the second clip is configured to engage the equipment opening at a single time. As the control module is inserted into the implement opening, a first tooth of the first clip may be configured to first engage the structure around the implement opening, a second tooth of the second clip may be configured to engage the structure around the implement opening after the first tooth, a third tooth of the first clip may be configured to engage the structure around the implement opening after the second tooth, and a fourth tooth of the second clip may be configured to engage the structure around the implement opening after the third tooth. The first clip may include a first number of teeth and the second clip may include a second number of teeth such that the control module is configured to be installed in the fixture opening at a third number of different insertion depths, wherein the third number is equal to the first number plus the second number.

Further, the at least one printed circuit board of the control module may include one or more attachment protrusions extending from a side of the at least one printed circuit board. The one or more attachment tabs may be configured to attach the at least one printed circuit board to a manufacturing panel during manufacture of the control module. The one or more attachment tabs are configured to be received within a gap in the housing of the control module to align the at least one printed circuit board within the housing after the at least one printed circuit board is detached from the manufacturing panel. In some examples, the detector and/or antenna and wireless communication circuitry may be omitted from the control module.

Drawings

FIG. 1 is a diagram of an exemplary load control system.

Fig. 2 and 3 are perspective views depicting exemplary control modules (e.g., sensor modules) that may be installed in the lighting fixture of the load control system of fig. 1.

Fig. 4 is a radial side view (e.g., looking in a radial direction) of the control module of fig. 2.

Fig. 5 is a lateral side view (e.g., looking in a lateral direction) of the control module of fig. 2.

Fig. 6 and 7 are exploded views of the control module of fig. 2.

FIG. 8 is a side cross-sectional view of the control module of FIG. 2 taken through the center of the control module.

Fig. 9 and 10 are side cross-sectional views of the control module of fig. 2 taken through two different printed circuit boards of the control module.

Fig. 11 and 12 are perspective views of the partially assembled control module of fig. 2.

Fig. 13 is a perspective view of a detector that may be used in the control module of fig. 2.

Fig. 14 and 15 are perspective views of a detector with a shield that may be used in the control module of fig. 2.

Fig. 16A and 16B are block diagrams of an exemplary load control system in a first configuration and a second configuration, respectively.

Detailed Description

FIG. 1 is a diagram of an exemplary load control system 100 for controlling the amount of power delivered to one or more electrical loads from an Alternating Current (AC) power source (not shown). The load control system 100 may be installed in a load control environment such as a room 102 of a building. The load control system 100 may include a plurality of control devices configured to communicate with each other via wireless signals, such as Radio Frequency (RF) signals 104, 105. For example, the control-source device, the control-target device, and/or the system controller 110 may be configured to transmit and receive RF signals 104, 105. The RF signals 104, 105 may use proprietary RF protocols, such as the CLEAR CONNECT protocol (e.g., CLEAR CONNECT TYPE A protocol and/or CLEAR CONNECT TYPE X protocol). Alternatively, the RF signals 104, 105 may be transmitted using a different RF protocol, such as a standard protocol, e.g., WIFI, bluetooth Low Energy (BLE), ZIGBEE, Z-WAVE, THREAD, KNX-RF, ENOCEAN RADIO protocol, or one of a different standard or proprietary protocol. Alternatively or additionally, the load control system 100 may include a wired digital communication link coupled to one or more of the control devices to provide communication between the control devices.

The control devices of the load control system 100 may include a plurality of control source devices (e.g., input devices operable to send messages in response to receiving user input, detecting occupancy/vacancy conditions, measuring ambient light intensity levels, etc.) and a plurality of control target devices (e.g., load control devices operable to receive messages and control an electrical load in response to received messages). A single control device of the load control system 100 may operate as both a control-source device and a control-target device. The control-source device may be an originating device or an intermediary device that originates the message, and the control-target device may be a destination device or intermediary device to which the message is sent.

The lighting control system 100 may include one or more lighting fixtures 110a, 110b, 110c, 110d that may be installed in the room 102 (e.g., in the ceiling of the room). Each lighting fixture 110a-110d may include a lighting load (e.g., an LED light source) and a respective lighting control device (e.g., an LED driver, ballast, dimming or switching module, or any combination of such devices) for controlling the respective lighting load of the lighting fixture 110a-110 d. The lighting control device may be a control target device capable of controlling the corresponding lighting load in response to a control instruction received in the digital message.

The control source devices of the load control system 100 may be used to control the lighting fixtures 110a-110d. The control source device may be an input device capable of transmitting a message (e.g., a digital message) to a control target device of the load control system 100, such as a lighting control device in the lighting fixtures 110a-110d, for example, via the RF signals 104, 105. The control-source device may send a message for controlling (e.g., indirectly controlling) the amount of power provided to the lighting load by the respective lighting control device in the respective lighting fixture 110a-110d. The message may include a control instruction (e.g., a load control instruction) or another indication that causes the lighting control device to determine a load control instruction for controlling the respective lighting load. The control source devices of the load control system 100 may include, for example, a remote control device 130, which may be configured to send messages to the lighting control devices in the respective lighting fixtures 110a-110d via the RF signal 104 in response to actuation of one or more buttons of the remote control device 130. For example, the remote control 130 may be battery powered.

The load control system 100 may include control modules (e.g., sensor devices and/or fixture controllers), such as control modules 120a, 120b, 120c, 120d. The control modules 120a-120d may each be attached to one of the lighting fixtures 110a-110 d. The control modules 120a-120d may each be electrically connected to a respective lighting control device within the lighting fixtures 110a-110d for controlling the lighting loads. The control modules 120a-120d may include one or more sensors (e.g., sensing circuitry) for controlling the lighting loads within the respective lighting fixtures 110a-110 d. For example, the control modules 120a-120d may include occupancy sensing circuitry (e.g., may operate as an occupancy sensor) and/or daylight sensing circuitry (e.g., may operate as a daylight sensor). The control modules 120a-120d may be control source devices that send digital messages to the respective lighting control devices to which they are connected (e.g., over a wired communication link). The control modules 120a-120d may also or alternatively be control-target devices (e.g., over a wireless communication link via RF signals 104, 105) for receiving digital messages from other devices in the system, such as the remote control device 130 or another control-source device, for controlling the respective lighting control devices to which the control modules 120a-120d are connected.

The occupancy sensing circuits in the control modules 120a-120d may be configured to detect occupancy and/or vacancy conditions in the room 102 in which the load control system 100 is installed. The control modules 120a-120d may control the lighting control devices in the respective lighting fixtures 110a-110d in response to the occupancy sensors detecting an occupancy or a vacancy condition. The control modules 120a-120d may each operate as an empty sensor such that a message is sent in response to detecting an empty condition (e.g., no message may be sent in response to detecting an empty condition). The daylight sensing circuitry in the control modules 120a-120d may be configured to measure the ambient light intensity level in the viewable area of the room 102 in which the load control system 100 is installed. The control modules 120a-120d may control the lighting control devices in the respective lighting fixtures 110a-121d in response to ambient light intensity levels measured by the respective daylight sensing circuits.

The control modules 120a-120d may each include a memory or other computer-readable storage medium capable of storing thereon instructions for execution by the control circuitry. Each control module 120a-120d may store in memory a unique identifier of the other device in the load control system 100 associated with that control module to enable identification of and/or transmission of messages from/to the associated control device. For example, each control module 120a-120d may store in memory a unique identifier of the remote control 130 associated with the control module.

The control modules 120a-120d may each include one or more wireless communication circuits for sending and/or receiving messages, e.g., via the RF signals 104, 105. The first wireless communication circuitry of each of the control modules 120a-120d is capable of communicating via the RF signal 104 over a first wireless communication link (e.g., a wireless network communication link) and/or using a first wireless protocol (e.g., a wireless network communication protocol, such as CLEARCONNECT protocols and/or the THREAD protocol). The second wireless communication circuit of each of the control modules 120a-120d is capable of communicating via the RF signal 105 over a second wireless communication link (e.g., a short range wireless communication link) and/or using a second wireless protocol (e.g., a short range wireless communication protocol such as a bluetooth protocol and/or a Bluetooth Low Energy (BLE) protocol).

The control modules 120a-120d may each include one or more wired communication circuits for transmitting and/or receiving signals and/or messages via respective wired communication links. For example, each control module 120a-120d may send and/or receive messages via wired communication circuitry on a wired power/communication link in the respective lighting fixture 110a-110 d. The wired power/communication link may be used to provide communication and/or power within each of the lighting fixtures 110a-110 d. For example, the wired power/communication link may include, for example, a Digital Addressable Lighting Interface (DALI) link or another digital communication link. The wired power/communication link in each lighting fixture 110a-110d may be used by the respective control module 120a-120d to send messages (e.g., including commands) to the respective lighting control devices to control the intensity level and/or color (e.g., color temperature) of the respective lighting load. Each control module 120a-120d may receive a message (e.g., including feedback information) from a respective lighting control device indicating an intensity level and/or color of a respective lighting load. Further, the lighting control devices in each of the lighting fixtures 110a-110d may each receive power from an AC power source (not shown) and may each supply power to the respective control modules 120a-120d via the wired power/communication link 120. Although the wired power/communication link may be described herein as a single link, the wired power/communication link may be composed of multiple links. For example, the lighting control devices of each lighting fixture 110a-110d may provide power to the respective control module 120a-120d via a two-wire power bus, while communication may be performed between the control module and the lighting control device 124 using an analog communication link, such as a 0-10V control link or another communication link (e.g., an RS-485 digital communication link) that may not provide power.

The load control system 100 may include a system controller 140 configured to send and/or receive digital messages via wired and/or wireless communications. For example, the system controller 140 may be configured to transmit and/or receive the RF signals 104 to communicate with one or more control devices (e.g., control source devices and/or control target devices, such as the control modules 120a-120 d). The system controller 140 may communicate digital messages between associated control devices. The system controller 140 may be coupled to one or more wired control devices (e.g., control source devices and/or control target devices) via a wired digital communication link. The system controller 140 may also or alternatively be capable of communicating via the RF signal 106 over a third wireless communication link (e.g., a standard communication link) and/or using a third wireless protocol (e.g., a standard communication protocol such as Internet Protocol (IP) and/or WI-FI protocol). For example, the system controller 140 may be configured to send and/or receive messages over a network 108 (e.g., the internet) via the RF signal 106.

The system controller 140 may be configured to send and receive messages between the control devices. For example, the system controller 140 may send messages to the control modules 120a-120d for controlling the lighting loads in the lighting fixtures 110a-110d in response to messages received from the remote control 130 (e.g., via the RF signals 104). The messages may include configuration data for configuring the control devices (e.g., the control modules 120a-120 d) and/or control data (e.g., commands) for controlling the lighting loads in the lighting fixtures 110a-110 d.

The load control system 100 may be delegated to implement control of the lighting loads in the lighting fixtures 110a-110d based on commands transmitted from the control device (e.g., the remote control device 130) to the control modules 120a-120d for controlling the lighting loads in the lighting fixtures 110a-110 d. For example, the remote control 130 may be associated with the control modules 120a-120d within the lighting fixtures 110a-110 d. The association information may be stored on the associated device, which may be used to communicate and identify messages and/or commands at the associated device to control the electrical devices in the load control system 100. The association information may include unique identifiers of one or more of the associated devices. The association information may be stored at the control modules 120a-120d, the system controller 140, or at other control devices that may be implemented to enable transmission and/or identification of messages between the control devices.

Network device 150 may be in communication with control modules 110a-110d and/or system controller 140 for commissioning and/or controlling control devices of load control system 100. Network device 150 may include a wireless telephone, tablet, laptop, personal Digital Assistant (PDA), wearable device (e.g., watch, glasses, etc.), or other computing device. Network device 150 may be operated by user 152. The network device 150 may be configured to communicate with the system controller 140 and/or control devices connected to the network 108 by sending and/or receiving messages using standard wireless protocols (e.g., via the RF signal 108). In addition, the network device 150 may be configured to communicate with the control modules 110a-110d by sending and/or receiving messages via short-range wireless communication links (e.g., using the RF signals 106). Further, network device 150 may be configured to transmit and/or receive beacon signals that may be used to commission load control system 100 via a short-range wireless communication link (e.g., using RF signal 106).

Fig. 2 and 3 are perspective views depicting an exemplary control module 200 (e.g., a sensor module) that may be deployed as the control modules 120a-120d of the load control system 100 shown in fig. 1. Fig. 2 also illustrates a partial view of an exemplary lighting fixture 202 (e.g., a corner 203 of the lighting fixture 202) into which the control module 200 may be installed (e.g., attached and/or installed). Fig. 4 is a radial side view (e.g., looking in the radial direction R) of the control module 200 and fig. 5 is a lateral side view (e.g., looking in the lateral direction T, i.e., 90 ° from the view of fig. 4) of the control module 200. Fig. 6 and 7 are exploded views of the control module 200. Fig. 8 is a side cross-sectional view of the control module 200 taken through the center of the control module 200 (e.g., through the line shown in fig. 4). For example, the control module 200 may be configured to attach (e.g., mount) to a lighting fixture 202 (e.g., one of the lighting fixtures 110a-110 d) and electrically connect to different types of lighting control devices, such as different types of LED drivers. The control module 200 may be electrically connected to the lighting control device (e.g., via a wired communication link and/or a control link) to enable control of the lighting control device in response to information provided from the control module 200.

The control module 200 may include a housing 210 having a first housing portion 212a and a second housing portion 212 b. The housing 210 of the control module 200 may be configured to be received in a fixture opening 204 (e.g., a circular fixture opening) of the housing 205 of the lighting fixture 202. The fixture opening 204 may extend from an outer surface 206 (e.g., bottom surface) to an inner surface 208 of the housing 205 of the lighting fixture 202 such that the housing 205 (e.g., material of the housing) is characterized by a thickness T (e.g., as shown in fig. 2). For example, the fixture opening 204 may have a diameter of approximately 0.86-0.95 inches. The first housing portion 212a and the second housing portion 212b of the housing 210 may each include a respective sidewall 214a, 214b shaped to allow the housing 210 to be received in the fixture opening 204. For example, the housing 210 may extend in the longitudinal direction L, and may have a cylindrical shape that may be centered about a central axis 211 of the control module 200 (e.g., which also extends in the longitudinal direction L). For example, the longitudinal direction L may be defined by the central axis 211. The first housing portion 212a and the second housing portion 212b may be attached to each other, for example, to define a cylindrical shape of the housing 210. When the first housing portion 212a and the second housing portion 212b are attached to each other, the housing 210 may define an opening 213 in a bottom side 215 of the housing 210, as shown in fig. 8. The first and second housing portions 212a, 212b of the housing 210 may include respective flange portions 216a, 216b that surround the bottom side 215 of the housing 210 (e.g., around the opening 213 of the housing 210) at the ends of the sidewalls 214a, 214b. Flange portions 216a, 216b may extend radially from opening 213. The first housing portion 212a may include a catch 217 configured to engage (e.g., attach to) a tab 218 in a recess 219 in the second housing portion 212a to attach the first housing portion 212a and the second housing portion 212b together, as shown in fig. 6 and 7.

The control module 200 may include a cover portion 220 (e.g., a bezel) configured to cover the opening 213 in the housing 210 and/or the fixture opening 204 in the lighting fixture 202 to which the control module 200 is mounted. The control module 200 may also include a lens 222 that is received in a hole 221 in the front surface 223 of the cover portion 220. The hole 221 and the lens 222 may be centered on the central axis 211 of the control module 200. When the fixture opening 204 is located in the bottom surface of the lighting fixture 202, the cover portion 220 and the lens 222 may be directed downward (e.g., toward the floor). When the control module 200 is installed (e.g., fully inserted) in the fixture opening 204, a rear edge 224 (e.g., rear surface) of the cover portion 220 may contact the exterior surface 204 of the lighting fixture 204. The lens 222 may be dome-shaped and made of a material that is at least partially infrared or visible light transparent to allow infrared energy to enter the housing 210 through the aperture 221. The cover portion 220 may include a tab 225 (e.g., as shown in fig. 8) configured to contact the flange portions 216a, 216b of the first and second housing portions 212a, 212b to attach the cover portion 220 to the housing 210.

The lens 222 may be configured to rest in (e.g., be received in) a support structure 226 of the cover portion 220. The cover portion 220 may include ribs 227 extending around an inner surface 228 of the lens 222. The rib 227 may be configured to engage a complementary feature in the cover portion 220. When the lens 222 is inserted into the aperture 221 in the front surface 223 of the cover portion 220, the rib 227 may remain below the inner edge 229 of the support structure 226 to retain the lens 222 in the aperture 221. For example, the support structure 226 may define a recess 231 configured to receive the rib 227 such that the lens 222 is releasably secured to the cover portion 220. The lens 222 may also include a protrusion 233 that may be received around a corresponding structure (not shown) of the cover portion 220 when the lens 222 is received within the aperture 221.

The control module 200 may include an occupancy detection circuit with a detector 270. For example, the occupancy detection circuit may include a Passive Infrared (PIR) sensing circuit, and the detector 270 may include a pyroelectric detector. The detector 270 may be configured to detect infrared energy from an occupant in a load control environment (e.g., such as the room 102 shown in fig. 1) that may enter the control module 200 through the aperture 221 of the cover portion 220 (e.g., through the lens 222). The control module 200 may be configured to detect motion (e.g., occupancy and/or vacancy conditions) in the load control environment in response to infrared energy detected by the detector 270. When the fixture opening 204 is located in the bottom surface of the lighting fixture 202, the control module 200 may be configured to detect occupancy and/or vacancy conditions in the space (e.g., load control environment) below the lighting fixture 202 to which the control module 200 is attached.

The first housing portion 212a and the second housing portion 212b may each include one or more clips (e.g., first clips 230a, 230b and/or second clips 240a, 240 b) for mounting the control module 200 to the lighting fixture 202 (e.g., within the fixture opening 204). For example, the first housing portion 212a may include a first clip 230a and a second clip 240a. The first clip 230a and the second clip 240a of the first housing portion 212a may each include a respective arm 232a, 242a. The first clip 230a and the second clip 240a of the first housing portion 212a may each include a plurality of teeth at the ends 234a, 244a of the respective arms 232a, 242a. For example, the first clip 230a of the first housing portion 212a can include a first tooth 235a and a second tooth 236a. The first tooth 235a may define an engagement surface 237a and the second tooth 236a may define an engagement surface 238a. The second clip 240a of the first housing portion 212a can include a first tooth 245a and a second tooth 246a. The first tooth 245a may define an engagement face 247a and the second tooth 246a may define an engagement face 248a. The first teeth 235a, 245a and the second teeth 236a, 246a of the first clip 230a and the second clip 240a of the first housing portion 212a may be located at different locations along the length of each of the first clip 230a and the second clip 240a (e.g., the first clip 230a and the second clip 240a are not identical). For example, the first tooth 235a and the second tooth 236a of the first clip 230a may be displaced along the first clip 230a in a first arrangement, and the first tooth 245a and the second tooth 246a of the second clip 240a may be displaced along the second clip 240a in a second arrangement. Although each clip 230a, 240a may include two teeth as shown in fig. 2-12, each clip may include more or fewer teeth, and the first clip 230a and the second clip 240a may include a different number of teeth.

The second housing portion 212b can include a first clip 230b and a second clip 240b. The first clip 230b and the second clip 240b of the second housing portion 212b can each include a respective arm 232b, 242b. The first clip 230b and the second clip 240b of the second housing portion 212b can each include a plurality of teeth at the ends 234b, 244b of the respective arms 232b, 242b. For example, the first clip 230b of the second housing portion 212b can include a first tooth 235b and a second tooth 236b. The first tooth 235b may define an engagement surface 237b and the second tooth 236b may define an engagement surface 238b. The second clip 240b of the second housing portion 212b can include a first tooth 245b and a second tooth 246b. The first tooth 245b may define an engagement surface 247b and the second tooth 246b may define an engagement surface 248b. The first and second teeth 235b, 245b, 236b, 246b of the first and second clips 230b, 240b of the second housing portion 212b may be located at different positions relative to each other along the length of each clip 230b, 240b (e.g., the first and second clips 230b, 240b are not identical). For example, the first tooth 235b and the second tooth 236b of the first clip 230b may be displaced along the first clip 230b in a first arrangement, and the first tooth 245b and the second tooth 246b of the second clip 240b may be displaced along the second clip 240b in a second arrangement. The first clip 230a of the first housing portion 212a and the first clip 230b of the second housing portion 212b may be identical (e.g., have a first tooth arrangement) and the second clip 240a of the first housing portion 212a and the second clip 240b of the second housing portion 212b may be identical (e.g., have a second tooth arrangement). Although the control module 200 described herein has a first housing portion 212a and a second housing portion 212b, each having one of the first clips 230a, 230b and one of the second clips 240a, 240b, one of the first housing portion 212a and the second housing portion 212b may have two first clips (e.g., both have a first tooth arrangement) and the other of the first housing portion 212a and the second housing portion 212b may have two second clips (e.g., both have a second tooth arrangement).

The first and second clips 230a, 240a of the first housing portion 212a and the first and second clips 230b, 240b of the second housing portion 212b may be received by the fixture opening 204 for mounting the control module 200 to the lighting fixture 202. One or more of the teeth 235a, 236a, 245a, 246a of the first housing portion 212a and one or more of the teeth 235b, 236b, 245b, 246b of the second housing portion 212b may be configured to engage the fixture opening 204 for mounting (e.g., locking) the control module 200 within the fixture opening 204 of the lighting fixture 202. One or more of the teeth 235a, 235b, 236a, 236b, 245a, 245b, 246a, 246b may secure the control module 200 within the fixture opening 204 such that the rear edge 224 of the cover portion 220 contacts the bottom surface 204 of the lighting fixture 202. The clips 230a, 230b, 240a, 240b may, for example, be resiliently biasable toward the central axis 211. As the control module 210 is inserted into the fixture opening 204 (e.g., along the insertion direction 209 shown in fig. 2), the arms 232a, 232b, 242a, 242b of the respective clips 230a, 230b, 240a, 240b may be configured to flex toward the sidewalls 214a, 214b of the first and second housing portions 212a, 212b such that the teeth 235a, 235b, 236a, 236b, 245a, 245b, 246a, 246b are biased toward the sidewalls 214a, 214 b. As the control module 200 is inserted into the fixture opening 204, the surface surrounding the fixture opening 204 may press the clips 230a, 230b, 240a, 240b against the sidewalls 214a, 214b such that the clips 230a, 230b, 240a, 240b fit within the fixture opening 204. The control module 200 may be secured in place within the fixture opening 204 when one or more of the engagement surfaces 237a, 237b, 238a, 238b, 247a, 247b, 248a, 248b contact the inner surface 208 of the material of the housing 205 of the lighting fixture 202. For example, one or more of the engagement surfaces 237a, 237b, 238a, 238b, 247a, 247b, 248a, 248b may be configured to prevent the control module 200 from falling out of the fixture opening 204.

The first and second clips 230a, 230b, 240a, 240b may be arranged in pairs (e.g., adjacent pairs) when the first and second housing portions 212a, 212b are attached to one another. Each pair of clips may have one clip with a first tooth arrangement (e.g., one of the first clips 230a, 230 b) and one clip with a second tooth arrangement (e.g., one of the second clips 240a, 240 b). For example, the first clip 230a of the first housing portion 212a and the second clip 240b of the second housing portion 212b may be positioned adjacent to each other, e.g., as a first pair. Because the first clip 230a and the second clip 240b have different tooth layouts (e.g., first and second layouts, respectively), the teeth 235a, 236a of the first clip 230a of the first housing portion 212a and the teeth 245b, 246b of the second clip 240b of the second housing portion 212b can be located at different positions relative to each other along the length of each clip 230a, 240 b. For example, the teeth 235a, 236a of the first clip 230a may be staggered compared to the teeth 245b, 246b of the second clip 240b (e.g., the teeth of the first clip 230a and the second clip 240b may be staggered relative to each other). For example, either one of the teeth 235a, 236a of the first clip 230a or one of the teeth 245b, 246b of the second clip 240b (e.g., one of the pair of clips 230a, 240 b) may engage the fixture opening 204 (e.g., the surface defining the fixture opening 204) at a single time.

Similarly, the first clip 230b of the second housing portion 212b and the second clip 240a of the first housing portion 212a may be positioned adjacent to each other, for example, as a second pair (e.g., as shown in fig. 4). Because the first clip 230b and the second clip 240a have different tooth arrangements (e.g., first and second arrangements, respectively), the teeth 235b, 236b of the first clip 230b of the second housing portion 212b and the teeth 245a, 246a of the second clip 240a of the first housing portion 212a can be located at different positions relative to each other along the length of each clip 230b, 240a. For example, the teeth 235b, 236b of the first clip 230b may be staggered compared to the teeth 245a, 246a of the second clip 240a (e.g., the teeth of the first clip 230b and the second clip 240a may be staggered relative to each other). For example, either one of the teeth 235b, 236b of the first clip 230b or one of the teeth 245a, 246a of the second clip 240a (e.g., one of the pair 230b, 240 a) may engage the fixture opening 204 (e.g., the surface defining the fixture opening 204) at a single time. Although both pairs of clips are located at the junction of the first and second housing portions 212a, 212b, as shown in fig. 2-8, pairs of clips may be located at other locations on each of the first and second housing portions 212, 212b, e.g., near the center of each of the respective first and second housing portions 212, 212b (e.g., 90 degrees relative to the locations shown in fig. 2-8). In addition, while the first and second clips 230a, 230b, 240a, 240b are positioned immediately adjacent to each other when the first housing portion 212a is connected to the second housing portion 212b, the first and second clips of each pair of clips may be spaced apart, e.g., having a distance between the first and second clips of each pair of clips of up to about one-fourth the circumference of the housing 210 (e.g., the first and second clips may be spaced apart by about 90 degrees).

The teeth 235a, 235b, 236a, 236b, 245a, 245b, 246a, 246b may be configured to allow the control module 210 to be mounted to a variety of lighting fixtures having housings made of different thicknesses of material. The staggering of teeth between adjacent clips as described above may allow the control module 200 to be installed in the fixture opening 204 at one of a plurality of different positions, such as four different positions P1, P2, P3, P4 (e.g., depths of insertion), as shown in fig. 4. The four different positions P1-P4 may represent different material thicknesses of housings of various lighting fixtures to which the control module 200 may be mounted. In some examples, a first clip of a pair of clips (e.g., first clip 230b shown in fig. 4) may include a first number X of teeth and a second clip of the pair of clips (e.g., second clip 240a shown in fig. 4) may include a second number Y of teeth such that control module 200 may be configured to be installed in fixture opening 204 at a third number Z of different locations (e.g., depth of insertion), where the third number Z may be equal to the first number X plus the second number Y (e.g., z=x+y).

As shown in the adjacent first clip 230b and second clip 240a (e.g., second pair of clips) shown in fig. 4, as the control module 200 is inserted into the fixture opening 204 (e.g., along the insertion direction 209 shown in fig. 2), alternating teeth on the first clip 230b and second clip 240a (e.g., and alternating teeth on the first clip 230a and second clip 240 b) may engage the fixture opening 204 (e.g., structure around the fixture opening 204). When the control module 200 is inserted into the fixture opening 204, the teeth 235b of the first clip 230b may first contact structures around the fixture opening 204 (e.g., before other teeth), causing the first clip to flex toward the center of the control module 210 (e.g., the central axis 211) until the fixture opening 204 moves past the peaks of the teeth 235 b. The peak of each tooth may define a distal edge of the respective engagement surface. This allows the first clip 230b to spring back away from the central axis 211 and the engagement surface 237b of the tooth 235b to contact the lighting fixture 202. As the control module 200 is further inserted into the fixture opening 204, the teeth 245a of the second clip 240a may contact the lighting fixture 202, causing the second clip to flex toward the center of the control module 210 (e.g., the central axis 211) until the fixture opening 204 moves past the peaks of the teeth, which allows the second clip to spring back away from the central axis 211 and the engagement surfaces 247a of the teeth 245a to contact structures surrounding the fixture opening 204. As the control module 200 is further inserted into the fixture opening 204, the teeth 236b of the first clip 230b may contact the lighting fixture 202, and then the teeth 246a of the second clip 240a may contact the structure surrounding the fixture opening 204. In other words, the teeth 235b, 245a, 236b, 246a may be staggered between the first clip 230b and the second clip 240a such that the teeth contact and engage structures around the fixture opening 204 in the following order: teeth 235b of first clip 230b, teeth 245a of second clip 240a, teeth 236b of first clip 230b, and teeth 246a of second clip 240a, which allow the control module to pass through positions P1 to P4 in sequence. In some examples, as the control module 200 is inserted into the fixture opening 204, a first tooth (e.g., tooth 235b of the first clip 230 b) may be configured to engage the fixture opening 204 (e.g., first in sequence), a second tooth (e.g., tooth 245a of the second clip 240 a) may be configured to engage the fixture opening 204 after the first tooth (e.g., second in sequence), a third tooth (e.g., tooth 236b of the first clip 230 b) may be configured to third engage the fixture opening 204 after the second tooth (e.g., third in sequence), and a fourth tooth (e.g., tooth 246a of the second clip 240 a) may be configured to engage structures around the fixture opening 204 after the third tooth (e.g., fourth in sequence).

While the above description of the insertion of the control module 200 into the fixture opening 204 primarily refers to the first clip 230b and the second clip 240a (e.g., the second pair of clips), a similar sequence of events occurs with the insertion of the control module 200 into the fixture opening 204 with respect to the first clip 230a and the second clip 240b (e.g., the first pair of clips). Furthermore, while the above description of inserting the control module 200 into the fixture opening 204 describes the control module being inserted into the fixture until the teeth 246a of the second clip 240a can contact the structure surrounding the fixture opening 204 (e.g., the sensor is in position P4), the insertion of the control module 200 into the fixture opening 204 can be stopped prior to position P4, e.g., when the rear edge 224 of the cover portion 220 contacts the outer surface 206 of the housing 205 of the lighting fixture 202 (e.g., in one of the P1-P3 positions).

The positioning of the teeth 235a, 235b, 236a, 236b, 245a, 245b, 246a, 246b such that the staggering of the teeth between the first and second clips 230a, 230b, 240a, 240b may allow for fewer teeth per clip (e.g., two teeth per clip) while providing more positions (e.g., four positions) for mounting the control module 200. Having fewer teeth per clip may make the engagement surfaces 237a, 237b, 238a, 238b, 247a, 247b, 248a, 248b larger so that the control module 200 may be more easily held in positions P1-P4 (e.g., the contact area between the engagement surfaces and the lighting fixture 202 is increased compared to smaller teeth). For example, the first and second clips 230a, 230b, 240a, 240b may be designed such that the control module 200 may be easily installed in the fixture opening 204 of the lighting fixture 202 while being difficult to remove from the fixture opening 204. Further, having teeth with a wider pitch (e.g., farther from each other) allows for easier manufacture (e.g., molding) of the clip (e.g., serrations may be more difficult to mold). Providing more locations where the control module 200 may be mounted to the lighting fixture 202 may allow for more flexible mounting, which may address warping of the housing 205 of the lighting fixture 202 and ensure that the rear edge 224 of the cover portion 220 is flush with the outer surface 206 (e.g., bottom surface) of the lighting fixture 202 (e.g., which may prevent light from passing through a potential gap illuminated between the cover portion 220 and the housing 205 of the lighting fixture 202).

The control module 200 may include a connector 250 that may allow connection to an external power source (e.g., an external Direct Current (DC) power source) and/or an external load control device (e.g., such as an LED driver for controlling an LED light source) for controlling a lighting load located in the lighting fixture 202. For example, the connector 250 may include two electrical terminals 252 configured to receive wires that may be connected to a power source to allow the control module 200 to receive power to power the circuitry of the control module 200. In addition, the connector 250 may include two electrical terminals 254 that may receive electrical wires that may be connected to a load control device via a wired communication link and/or a wired control link for controlling a lighting load.

As shown in fig. 6 and 7, the control module 200 may include a Printed Circuit Board (PCB) assembly 260 that may be received by the housing 210 and the cover portion 220. The printed circuit board assembly 260 may include a combination of rigid and flexible printed circuit boards (e.g., rigid-flexible printed circuit boards). For example, the printed circuit board assembly 260 may include a first printed circuit board 261 (e.g., a sensor printed circuit board), a second printed circuit board 262 (e.g., a power printed circuit board), and a third printed circuit board 263 (e.g., a control printed circuit board). The first printed circuit board 261, the second printed circuit board 262, and the third printed circuit board 263 may be electrically connected together via a flexible connector 264 (e.g., a flexible printed circuit board). For example, the first printed circuit board 261, the second printed circuit board 262, and the third printed circuit board 263 may include a multi-layer printed circuit board (e.g., having three or more layers), wherein the outer layer is made of a rigid substrate (e.g., FR 4) and one or more of the inner layers are made of a flexible printed circuit board material. The flexible connector 264 may be formed as part of one or more of the flexible inner layers of the first printed circuit board 261, the second printed circuit board 262, and the third printed circuit board 263.

The detector 270 may be mounted to the first printed circuit board 261, and the first printed circuit board 261 may be oriented such that the detector 270 is directed toward the lens 222 and the aperture 221 in the cover portion 220 (e.g., toward the longitudinal direction L). For example, the first printed circuit board 261 may be oriented in a plane extending in the lateral direction T and the radial direction R. Detector 270 may include one or more thermoelectric elements (not shown) that are responsive to infrared energy received by detector 270. The detector 270 may include a housing 271 (e.g., a cylindrical housing) that encloses the thermoelectric elements. The housing 271 may have an opening 272 through which the thermoelectric element may receive infrared energy. The opening 272 may be located in a front surface 273 of the housing 271 (e.g., it may be oriented in a plane extending in the transverse direction T and the radial direction R and perpendicular to the longitudinal direction L). The housing 271 and/or the opening 272 in the housing 271 may be centered along the central axis 211 of the control module 200. For example, the opening 272 may be circular, as shown in fig. 6 and 7. Further, the openings may be rectangular, e.g., square (e.g., as shown in fig. 13). The opening 272 may define an area a _DET defined by a perimeter of the opening 272 (e.g., a circular perimeter as shown in fig. 6 and 7). The housing 271 may be made of, for example, a conductive material such as metal and/or a non-conductive material such as plastic. The first printed circuit board 261 may also have photo sensing circuitry (e.g., photo sensing circuitry) such as a photo sensor 274 mounted thereon. The photosensor 274 may be configured to measure the amount of light illuminated through the lens 222.

The second printed circuit board 262 may extend through the housing 210 of the control module 200 in the longitudinal direction L and may be oriented perpendicular to the first printed circuit board 261. For example, the second printed circuit board 262 may be oriented in a plane extending in the longitudinal direction L and the transverse direction T. The connector 250 may be mounted to the second printed circuit board 262. In addition, the second printed circuit board 262 may have a power supply and/or one or more energy storage devices (e.g., capacitors) mounted thereon for generating a DC supply voltage for powering the circuitry of the control module 200.

The third printed circuit board 263 may also extend through the housing 210 of the control module 200 in the longitudinal direction L and may be oriented perpendicular to the first printed circuit board 261 and parallel to the second printed circuit board 262. For example, the third printed circuit board 263 may be oriented in a plane extending in the longitudinal direction L and the transverse direction T. Control circuitry (such as processor 275) of control module 200 may be mounted to third printed circuit board 263. Processor 275 may be configured (e.g., configured software or firmware) to detect occupancy and/or vacancy conditions in the load control environment in response to detector 270, and may be configured to measure the amount of light shining through lens 222 in response to photosensor 274. Processor 275 may also include wireless communication circuitry, such as a Radio Frequency (RF) transceiver, and an antenna 280. The wireless communication circuit may be electrically coupled to the antenna 280 and configured to transmit and receive wireless signals (e.g., RF signals) via the antenna 280 (e.g., as will be described in more detail below). Antenna 280 may be configured to transmit and/or receive RF signals. Additionally and/or alternatively, the control module 200 may include wireless communication circuitry, for example, external to the processor 275 and mounted to the third printed circuit board 263. The wireless communication circuitry of the control module 200 may be configured to transmit RF signals at a transmission frequency f _TX (e.g., about 2.4 GHz). In some examples, the aperture 221, lens 222, detector 270, and photosensor 274 in the cover portion 220 may be omitted from the control module, and the processor 275 may be responsive only to RF signals received via the antenna 280.

The second printed circuit board 262 and the third printed circuit board 263 may each include an attachment projection 265 (e.g., a breakaway or snap projection and/or the remainder of the breakaway or snap projection). The attachment protrusions 265 may be configured to attach the second printed circuit board 262 and the third printed circuit board 263 to respective manufacturing panels (not shown). For example, the attachment tabs 265 may each provide a perforated connection (e.g., a mouse snap) between the second and third printed circuit boards 262, 263 and the corresponding manufacturing panels. Each attachment projection 265 may include an extension 266 that extends from a respective edge 267 (e.g., in the transverse direction T) of the second printed circuit board 262 and the third printed circuit board 263 to a respective end portion 268 where a perforated connection to a respective manufacturing panel may be provided. The second printed circuit board 262 and the third printed circuit board 263 may be attached to the respective manufacturing panels during manufacture of the control module 200 (e.g., during placement of electrical components on and/or soldering of electrical components to the respective printed circuit boards). After the electrical components of the control module 200 are mechanically and electrically attached (e.g., soldered) to the second printed circuit board 262 and the third printed circuit board 263, the second printed circuit board 262 and the third printed circuit board 263 may be detached from the respective manufacturing panels, for example, by breaking the perforated connection of the attachment protrusions 265. The extension portion 266 and the respective end portion 268 of each attachment tab 265 may provide a space (e.g., in the transverse direction T) between the electrical components on the second and third printed circuit boards 262, 263 and the respective perforated connections between the second and third printed circuit boards 262, 263 and the respective manufacturing panels, which may minimize damage to the electrical components when the second and third printed circuit boards 262, 263 are detached from the respective manufacturing boards.

Fig. 9 and 10 are side cross-sectional views of the control module 200 taken through the centers of the second printed circuit board 262 and the third printed circuit board 263 (e.g., through the line shown in fig. 8), respectively, and illustrate the attachment protrusion 265 in more detail. The attachment tabs 265 may be configured to be located in a gap 269 in the housing 210 when the control module 200 is assembled and the first and second housing portions 212a, 212b are attached to one another and the printed circuit board assembly 260 is captured therebetween. With the attachment tab 265 received in the gap 269, the second printed circuit board 262 and the third printed circuit board 263 (e.g., and thus the printed circuit board assembly 260) may be aligned and positioned within the housing 210 (e.g., between the first housing portion 212a and the second housing portion 212 b). For example, the gap 269 may be configured to hold (e.g., lock) the second printed circuit board 262 and the third printed circuit board 263 in the longitudinal direction L and the radial direction R. Thus, the attachment tab 265 may serve the dual purpose of attaching the second and third printed circuit boards 262, 263 to the respective manufacturing panels and aligning the second and third printed circuit boards 262, 263 within the housing 210.

Fig. 11 and 12 are perspective views of a partially assembled control module 200 (e.g., the first housing portion 212a and the cover portion 220 removed). The antenna 280 may include a dipole antenna having a first antenna element 282a and a second antenna element 282 b. For example, the first antenna element 282a and the second antenna element 282b may be electrically and mechanically coupled to the third printed circuit board 263 and electrically coupled to the wireless communication circuitry of the control module 200 in a dipole antenna configuration. For example, the first antenna element 282a and the second antenna element 282b may extend through respective through holes 276 in the third printed circuit board 263 and be soldered to electrical contacts (not shown) around and/or within the through holes 276. The first antenna element 282a and the second antenna element 282b may each comprise a thin strip of conductive material (e.g., metal). The thin strip of conductive material may be cut and bent to form the final shape of the first antenna element 282a and the second antenna element 282b (e.g., as shown in fig. 6-12). The first antenna element 282a and the second antenna element 282b may be mirror images (e.g., symmetrical) of each other.

The first and second antenna elements 282a, 282b may each include a respective curved portion 284a, 284b that defines ends 289a, 289b of the first and second antenna elements 282a, 282b (e.g., opposite ends of the first and second antenna elements 282a, 282b that are received through the through-hole 276). The curved portions 284a, 284b of the first and second antenna elements 282a, 282b may be substantially planar in a plane (e.g., a plane defined in the lateral direction T and the radial direction R) parallel to the plane of the front surface 223 of the cover portion 220 (e.g., a plane parallel to the outer surface 206 of the lighting fixture 202 in which the fixture opening 204 is located). The curved portions 284a, 284b of the first and second antenna elements 282a, 282b may each define a circular segment having a center that is substantially aligned with the central axis 211 of the control module 200 (e.g., the center of the cylindrical housing of the detector 270). The curved portions 284a, 284b of the first and second antenna elements 282a, 282b may curve around the detector 270. The curved portions 284a, 284b may include respective inner edges 287a, 287b that extend along a circular path 271 (e.g., as shown in fig. 11) centered at the central axis 221 of the control module. The curved portions 284a, 284b may define an area a _CP bounded by the circular path 271 of the respective inner edge 287a, 287 b. For example, the area a _DET defined by the opening 272 of the detector 270 may fall within the area a _CP defined by the circular path 271 of the inner edges 287a, 287b of the respective curved portions 284a, 284b (e.g., the detector 270 and/or the opening 272 of the detector 270 may be surrounded by the circular path 271 defined by the inner edges 287a, 287b of the respective curved portions 284a, 284 b).

The curved portions 284a, 284b of the first and second antenna elements 282a, 282b may be located within the cover portion 220 (e.g., between the cover portion 220 and the flange portions 216a, 216b of the first and second housing elements 212a, 212 b). Since the cover portion 220 and the flange portions 216a, 216b of the first and second housing elements 212a, 212b are configured to be located outside of the housing of the lighting fixture 202, the curved portions 284a, 284b of the first and second antenna elements 282a, 282b may also be located outside of the housing 205 of the lighting fixture 202. For example, because the rear edge 224 of the cover portion 220 is configured to contact the bottom surface of the lighting fixture 202, the curved portions 284a, 284b of the first and second antenna elements 282a, 282b may be located an offset distance d _{Offset of} (e.g., about 0.19 inches) below the bottom surface of the housing 205 of the lighting fixture 202, as shown in fig. 9. For example, the curved portions 284a, 284b may operate as the primary radiating structure of the antenna 280. Since the antenna 280 is arranged in a dipole antenna configuration in which the curved portions 284a, 284b of the first and second antenna elements 282a, 282b are located outside of the lighting fixture 202, the main radiating structure (e.g., curved portions 284a, 284 b) of the antenna 280 may be located outside of the lighting fixture 202, wherein RF signals may more easily propagate from the control module 200. In addition, the primary radiating structure (e.g., curved portions 284a, 284 b) of antenna 280 may be located away from noise sources (e.g., circuitry of control module 200 and/or lighting controls of the lighting fixture, and/or wires coupled to control module 200 and/or lighting controls) internal to lighting fixture 202.

The first and second antenna elements 282a, 282b may include respective connection portions 285a, 285b (fig. 8 and 12) that are received in the through-holes 276. The first antenna element 282a and the second antenna element 282b may include respective elongated portions 286a, 286b. After exiting the through-hole 276, the first and second antenna elements 282a, 282b may be bent (e.g., bent approximately 90 degrees) at the connection portions 285a, 285b and extend toward the cover portion 220 (e.g., in the longitudinal direction L) along the respective elongated portions 286a, 286b. The elongated portions 286a, 286b may be parallel to one another such that the first and second antenna elements 282a, 282b remain equally spaced along the length of the elongated portions 286a, 286b. For example, the elongated portions 286a, 286b may extend through the housing opening 213 such that the respective curved portions 284a, 284b are located outside of the housing of the lighting fixture 202. After the elongated portions 286a, 286b exit through the housing opening 213, the first and second antenna elements 282a, 282b may be bent (e.g., about 90 degrees) and extend away from the central axis 211 of the control module 200 along the respective offset portions 288a, 288 b. The offset portions 288a, 288b may be connected to respective curved portions 284a, 284b of the first and second antenna elements 282a, 282b such that the curved portions 284a, 284b are positioned farther from the central axis 211 than the elongated portions 286a, 286b. The elongated portions 286a, 286b may extend in the longitudinal direction L between the respective connection portions 285a, 285b and the respective offset portions 288a, 288 b. The offset portions 288a, 288b may extend away from the central axis 211 in the radial direction R. The curved portions 284a, 284b of the first and second antenna elements 282a, 282b may extend to respective ends 289a, 289b. The offset portions 288a, 288b may allow the curved portions 284a, 284b (e.g., the ends 289a, 289b of the first and second antenna elements 282a, 282 b) to be positioned away from each other (e.g., away from the central axis 211), which may improve the efficiency of the antenna 280. In addition, the offset portions 288a, 288b may allow the curved portions 284a, 284b (e.g., ends 289a, 289 b) of the first and second antenna elements 282a, 282b to be positioned away from the detector 270 (e.g., to prevent and/or minimize loading of the antenna 280 from the metal housing of the detector 270).

The detector 270 may be located at a point where the energy of the radio frequency wave (e.g., RF signal) generated by the antenna 280 is at a particularly high level (e.g., at a maximum level). For example, the wireless communication circuitry of the control module 200 and antenna 280 may be characterized by a transmission power greater than about 10dBm (e.g., about 19.5 dBm). As previously described, the housing 271 of the detector 270 may be made of a conductive material such as metal. The housing 271 may be connected to circuit common (e.g., ground) of the control module 200 such that the housing 271 may operate as an RF shield for the thermoelectric elements of the detector 270.

The opening 272 of the housing 271 of the detector 270 may be sized to shield the thermoelectric elements of the detector 270 from RF signals generated by the wireless communication circuitry of the control module 200 and the antenna 280, which may, for example, result in unintended detection of occupancy and/or empty conditions. For example, the opening 272 may be circular, as shown in fig. 11 and 12. The opening 272 may have a diameter D _CIR defining a cutoff frequency f _C above which RF signals may propagate through the opening 272 without attenuation, and below which RF signals may be attenuated as they travel through the opening 272. For example, the cutoff frequency f _C of the opening 272 (e.g., a circular opening) may be determined as a function of the diameter D _CIR of the opening 272 and the cutoff wavelength λ _C, e.g., λ _C＝1.706·D_CIR, and f _C＝c/λ_C, where c is the speed of light (e.g., about 299,792,458 meters/second). The diameter D _CIR of the opening 272 may be sized to set the cutoff frequency f _C to be greater than the transmission frequency f _TX (e.g., D _CIR＝0.586·c/f_C). For example, when the transmission frequency f _TX is about 2.4GHz, the diameter D _CIR of the opening 272 may be about 4 millimeters, which may be 1/30 of the transmission wavelength λ _TX at the transmission frequency f _TX and may result in a value of the cutoff frequency f _C of about 44 GHz. For example, the diameter D _CIR of the opening 272 may be between about 1/20 and 1/50 of the transmission wavelength lambda _TX at the transmission frequency f _TX.

Fig. 13 is a perspective view of another detector 270a that may be used in a control module (e.g., control module 200). For example, detector 270a may have a housing 271a (e.g., a cylindrical housing) with an opening 272a through which infrared energy may be received by one or more thermoelectric elements of detector 270 a. The opening 272a may be located in the front surface 273a of the housing 271 a. The housing 271a and/or the opening 272a in the housing 271a can be centered along a central axis of the control module (e.g., such as the housing 271 and the opening 272 of the housing 271 being centered along the central axis 211 of the control module 200). The housing 271a may be made of a conductive material such as metal. The housing 271a may be connected to a circuit common (e.g., ground) of the control module such that the housing 271a may operate as an RF shield for the thermoelectric elements of the detector 270 a.

The opening 272a of the housing 271a may be rectangular, for example, square as shown in fig. 13. The opening 272a of the housing 271a can be sized to shield the thermoelectric elements of the detector 270a from RF signals generated by the wireless communication circuit and the antenna of the control module (e.g., antenna 280). Opening 272a may be characterized by a distance d _RECT, which may be the longest dimension (e.g., the diagonal dimension from one corner to the opposite corner) of the rectangle and/or square of opening 272 a. For example, when the opening 272a is square as shown in fig. 13, the distance d _RECT may be the length between one corner of the square to the opposite corner. The distance d _RECT of the opening 272a may define a cutoff frequency f _C above which the RF signal may propagate through the opening 272a without attenuation, and below which the RF signal may be attenuated as it travels through the opening 272 a. For example, the cut-off frequency f _C of the opening 272a (e.g., a rectangular opening) may be determined as a function of the distance d _RECT and the cut-off wavelength λ _C, e.g., λ _C＝d_RECT, and f _C＝c/λ_C, where c is the speed of light (e.g., about 299,792,458 meters/second). The distance d _RECT of the opening 272a may be sized to set the cutoff frequency f _C to be greater than the transmission frequency f _TX (e.g., d _RECT＝0.5·c/f_C). For example, the distance d _RECT of the opening 272a may be sized between about 1/20 and 1/50 of the transmission wavelength lambda _TX at the transmission frequency f _TX.

Fig. 14 is a perspective view of another detector 270b that may be used in a control module (e.g., control module 200) showing how a shield 290b may be used to reshape and/or resize an opening 272b through which infrared energy is received by detector 270 b. For example, detector 270b may have a housing 271b (e.g., a cylindrical housing) with a front surface 273b in which opening 272b is located. The housing 271b and/or the opening 272b in the housing 271b can be centered along a central axis of the control module (e.g., such as the housing 271 and the opening 272 of the housing 271 being centered along the central axis 211 of the control module 200). The housing 271b may be made of a conductive material such as metal. The housing 271b may be connected to a circuit common (e.g., ground) of the control module such that the housing 271b may operate as an RF shield for the thermoelectric elements of the detector 270 b. Although the opening 272b is shown as rectangular in fig. 14, the opening 272b may also be circular (e.g., as the opening 272 of the detector 270 shown in fig. 12). The opening 272b of the housing 271b of the detector 270 may define an area a _DET.

The shield 290b may include an opening 292b extending through the shield 290 b. The shield 290b may be made of a conductive material. For example, the shield 290b may be a conductive decal adhered to the front surface 273b of the housing 271b of the detector 270 b. The shield 290b may include a conductive adhesive on a bottom surface 294b of the shield for adhering the shield 290b to a front surface 273b of the housing 271b and for electrically coupling the shield 290b to the housing 271b of the detector 270 b. Further, the shield 290b may be mechanically and/or electrically coupled to the housing 271b of the detector 270b via other means (such as, for example, clips or other attachment members). Since the housing 271b of the detector 270b is electrically coupled to the circuit common of the control module, the shield 290b may also be electrically coupled to the circuit common.

The opening 292b of the shield 290b may be sized to shield the thermoelectric elements of the detector 270b from the RF signals generated by the control module. If the opening 272b of the housing 271b of the detector 270b is unable to block RF signals at the transmission frequency f _TX of the control module (e.g., the length of the largest dimension of the opening 270b may result in the cutoff frequency f _C being below the transmission frequency f _TX), then a shield 290b may be mounted on the front surface 273b of the housing 271b, with the opening 292b of the shield 290b overlying the opening 272b of the housing 271b, thereby properly shielding the thermoelectric elements of the detector 270b from RF signals generated by the control module. The opening 292b of the shield 290b may define an area a _SH that falls within the area of the opening 272b of the housing 271b of the detector 270b (e.g., to reduce the size of the opening, such as the planar area of the opening). The area a _SH of the opening 292b of the shield 290b may be smaller than the area a _DET of the opening 272b of the housing 271b of the detector 270. For example, the opening 292b may be a circular opening (e.g., reshaped the opening 272 b) as shown in fig. 14. The opening 292b may have a diameter D _CIR that may be sized to block RF signals in a similar manner as the opening 272 of the detector 270 shown in fig. 12 and 13. The diameter D _CIR of the opening 292b may be sized to set the cutoff frequency f _C to be greater than the transmission frequency f _TX (e.g., D _CIR＝0.586·c/f_C). For example, when the transmission frequency f _TX is about 2.4GHz, the diameter D _CIR of the opening 292b of the shield 290b may be about 4 millimeters, which may be 1/30 of the transmission wavelength λ _TX at the transmission frequency f _TX and may result in a value of the cutoff frequency f _C of about 44 GHz. For example, the diameter D _CIR of the opening 292b may be between about 1/20 and 1/50 of the transmission wavelength lambda _TX at the transmission frequency f _TX. In addition, the opening 292b of the shield 290b may be rectangular, for example, square, such as shown in fig. 13 (e.g., to reduce the size of the opening, such as the planar area of the opening).

Fig. 15 is a perspective view of another detector 270c that may be used in a control module (e.g., control module 200). For example, detector 270c may have a housing 271c (e.g., a cylindrical housing) with an opening 271c through which infrared energy may be received by one or more thermoelectric elements of detector 270 c. The opening 272c may be located in the front surface 273c of the housing 271 c. The housing 271c and/or the opening 272c in the housing 271c can be centered along a central axis of the control module (e.g., such as the housing 271 and the opening 272 of the housing 271 being centered along the central axis 211 of the control module 200). The housing 271c may be made of a non-conductive material such as plastic, for example. Although the opening 272c is shown as rectangular in fig. 15, the opening 272c may also be circular (e.g., as the opening 272 of the detector 270 shown in fig. 12).

The detector 270c may be surrounded by the shield 290c (e.g., even though the shield 290c is shown above the detector 270c in fig. 15). The shield 290c may include an opening 292c that may be located above the front surface 273c of the housing 271c, and the opening 292c covers over the top of the opening 272c of the housing 271c to shield the thermoelectric elements of the detector 270c from RF signals generated by the control module (e.g., in a similar manner as the shield 290b with the opening 292b shields the detector 270 b). The shield 290c may include a sidewall 296c (e.g., a cylindrical sidewall) that may surround the housing 271c of the detector 270 c. The shield 290c may include one or more protrusions 296c (e.g., lugs and/or posts) extending from a lower edge 298c of the sidewall 295 c. The protrusion 296c may be made of a conductive material and may be attached to a circuit common on the control module such that the shield 290c may also be electrically coupled to the circuit common. For example, the protrusion 296c may be received in a through hole in a printed circuit board (e.g., first printed circuit board 261) on which the detector 270c is mounted, and may be soldered to an electrical pad surrounding the through hole to electrically couple the shield 290c to the circuit common. In addition, each tab 296c may extend from the sidewall 295c in a vertical direction (e.g., perpendicular to the sidewall 295 c) and/or may each be bent at approximately a right angle such that the tab 296c may be soldered to an electrical pad on a printed circuit board (e.g., first printed circuit board 261).

The opening 292c of the shield 290c may be sized to shield the thermoelectric elements of the detector 270c from RF signals generated by the control module (e.g., in a manner similar to the sizing of the opening 292b in the shield 290 b) when the shield 290c surrounds the housing 271c of the detector 270c (e.g., the shield 290c is mechanically and electrically coupled to a printed circuit board). In addition, the opening 292c of the shield 290c may be rectangular, for example, such as square as shown in fig. 13 (e.g., to reduce the size of the opening, such as the planar area of the opening).

Fig. 16A and 16B are block diagrams of an exemplary load control system 300 in a first configuration and a second configuration, respectively. The load control system 300 may include a control module 310 (e.g., a sensor device) that may be deployed as the control modules 120a-120d of the load control system 100 shown in fig. 1 and/or the control modules 200 shown in fig. 2-12. In addition, the load control system 300 may include a first load adjustment device (such as the first lighting control device 330) in a first configuration (e.g., as shown in fig. 16A) and a second load adjustment device (such as the second lighting control device 340) in a second configuration (e.g., as shown in fig. 16B). The first lighting control device 330 and the second lighting control device 340 may be LED drivers and may be examples of lighting control devices for the lighting fixtures 110a-110d of the load control system 100 of fig. 1. The first lighting control device 330 and the second lighting control device 340 may be electrically coupled to an Alternating Current (AC) power source (not shown) via the power line 304 for receiving an AC mains voltage V _AC from the AC power source. The first lighting control device 330 and the second lighting control device 340 may each be configured to control an amount of power delivered from an AC power source to an electrical load, such as the lighting load 302 (e.g., LED light source). The lighting load 302 and the control module 310 may be configured to be installed in and/or on a lighting fixture (e.g., one of the lighting fixtures 110a-110d shown in fig. 1 and/or the lighting fixture 202 shown in fig. 2) in a first configuration with the first lighting control device 370 and in a second configuration with the second lighting control device 380.

The control module 310 may include a control connector 312 (e.g., the connector 250 of the sensor module 200 shown in fig. 2-12) configured to electrically connect to the first lighting control device 330 in a first configuration and to the second lighting control device 340 in a second configuration. For example, the module connector 312 of the control module 310 may include four electrical terminals (e.g., electrical terminals 252, 254). The control module 310 may be configured to receive power via the control connector 312 for powering the circuitry of the control module 310. The control module 310 may also be coupled to the first lighting control device 330 and/or the second lighting control device 340 via a control connector 312.

The control module 310 may include module control circuitry 314 for controlling the operation of the control module 310. For example, the module control circuitry 314 may include one or more of a processor (e.g., a microprocessor), a microcontroller, a Programmable Logic Device (PLD), a Field Programmable Gate Array (FPGA), an Application Specific Integrated Circuit (ASIC), or any suitable controller or processing device. The control module 310 may also include a memory (not shown). The memory is communicatively coupled to the module control circuitry 314 for storing and/or retrieving, for example, operational settings of the control module 310. Further, the memory may be configured to store software executed by the module control circuit 314 to operate the control module 310. The memory may be implemented as an external Integrated Circuit (IC) and/or as internal circuitry of the module control circuit 314.

The control module 310 may include a wireless communication circuit 316 configured to communicate with a control device of the load control system via a wireless signal, such as an RF signal (e.g., RF signals 104, 105 shown in fig. 1). The wireless communication circuitry 316 may include, for example, one or more Radio Frequency (RF) transceivers coupled to an antenna 318 (e.g., antenna 280) for transmitting (e.g., sending and/or receiving) RF signals. The wireless communication circuit 316 may also include one or more of an RF transmitter for transmitting RF signals and/or an RF receiver for receiving RF signals. The wireless communication circuit 316 may be configured to transmit (e.g., send and/or receive) messages (e.g., digital messages) via RF signals. For example, the wireless communication circuit 316 may be configured to send and/or receive messages over a first wireless communication link using a first wireless protocol (e.g., via RF signals 104 over a wireless network communication link using a wireless network communication protocol) and over a second wireless communication link using a second wireless protocol (e.g., via RF signals 105 over a short range wireless communication link using a short range wireless communication protocol). For example, the wireless communication circuit 316 may include a single RF transceiver configured to communicate over a wireless network communication link and a short range wireless communication link, or multiple (e.g., two) RF transceivers, such as a first RF transceiver for communicating over a wireless network communication link and a second RF transceiver for communicating over a short range wireless communication link. The messages received by the module control circuit 315 via the RF signals may include configuration data for configuring the control module 310 and/or control data (e.g., commands) for controlling the lighting load 302. The configuration data and/or control data may include identification information (e.g., such as a unique identifier) associated with the control module 310. Although shown separately from the module control circuit 314 in fig. 16A and 16B, the wireless communication circuit 316 may also be implemented as an internal circuit of the module control circuit 314.

The control module 300 may include an occupancy sensing circuit 320 configured to sense (e.g., detect) occupancy and/or vacancy conditions in the vicinity of the lighting fixture (e.g., in the room 102) in which the control module 300 is installed. The occupancy sensing circuit 320 may include a detector (e.g., detector 270) for detecting occupancy and/or vacancy conditions in the space. For example, the occupancy sensing circuit 320 may include a Passive Infrared (PIR) sensing circuit, wherein the detector is a pyroelectric detector. In addition, the detector may include one or more of an ultrasound detector and/or a microwave detector. For example, the pyroelectric detector may be configured to receive infrared energy from an occupant in the space below the control module 200 (e.g., below the lighting fixture) through a lens (e.g., lens 222 shown in fig. 2-10), thereby sensing occupancy in the space. The module control circuit 314 may be configured to determine an empty condition in the space after expiration of a timeout period since the last occupied condition was detected. The module control circuit 314 may be configured to control the first lighting control device 330 and/or the second lighting control device 340 to turn the lighting load 304 on and off and to adjust the intensity level of the lighting load 304 in response to the occupancy sensing circuit 320 detecting the occupancy and/or vacancy condition.

The control module 300 may also include a photo-sensing circuit 322 configured to measure a light level (e.g., an ambient light level and/or a daylight level) in the vicinity of the lighting fixture (e.g., in the room 102) in which the control module 300 is installed. The photo-sensing circuit 322 may include a photo-sensor (e.g., photo-sensor 274) for measuring light levels in space. For example, the photosensor may be configured to receive light from a space below the control module 200 (e.g., below the lighting fixture) through a lens (e.g., lens 222) to measure a light level in the space. The module control circuit 314 may be configured to control the first lighting control device 330 and/or the second lighting control device 340 to turn the lighting load 304 on and off and to adjust the intensity level of the lighting load 304 in response to the light level measured by the photo sensing circuit 322.

The control module 310 may be one or more circuits coupled to the control connector 312 for receiving power and/or controlling the first lighting control device 330 and/or the second lighting control device 340 (e.g., depending on whether the load control system 300 is in the first configuration or the second configuration, as will be described in more detail below). The control module 310 may include a module power supply 324 (e.g., an internal power supply) configured to receive power via the electrical terminals 312a, 312b of the control connector 312 and to generate a Direct Current (DC) module power supply voltage V _CC for powering the module control circuit 314, the wireless communication circuit 316, the occupancy sensing circuit 320, the photo-sensing circuit 322, and/or other circuits of the control module. The control module 310 may include a first wired communication circuit 326 that may be coupled to the two electrical terminals 312c, 312d of the control connector 312 and may be used to communicate with the first lighting control device 330 in the first configuration. The control module 310 may include a second wired communication circuit 328 that may be coupled to the electrical terminals 312a, 312b of the control connector 312 and may be used to communicate with the second lighting control device 340 in a second configuration.

When the load control system 300 is in the first configuration as shown in fig. 16A, the control module 310 may be coupled to the first lighting control device 330 via a four-wire control link 339. The first lighting control device 330 may include a power connector 331 configured to be electrically coupled to an AC power source via the power line 304 for receiving an AC mains voltage V _AC and a load connector 332 configured to be electrically coupled to the lighting load 302. The first lighting control device 330 may also include a control connector 333 that may be configured to electrically couple to the control module 310 via a four-wire control link 339. For example, the control connector 333 of the first lighting control device 330 may include four electrical terminals as shown in fig. 16A.

The first lighting control device 330 may include a load regulation circuit 334 (e.g., an LED drive circuit) that may be coupled between the power connector 331 and the load connector 332 and may be configured to control the amount of power delivered to the lighting load 302. The first lighting control device 330 may include a module power supply 335 coupled to receive an AC mains voltage V _AC via a power connector 331 and to generate a link power voltage V _Link for powering the control module 310 via a control connector 333. The module power supply 324 of the control module 310 may receive the link power supply voltage V _Link via the electrical terminals 312a, 312b of the control connector 312.

The first lighting control device 330 may include a driver control circuit 336 configured to control the load adjustment circuit 334 to adjust the amount of power delivered to the lighting load 302, thereby adjusting the intensity level of the lighting load. The first lighting control device 330 may also include a wired communication circuit 338 configured to be coupled to the control module 310 via a control connector 333 (e.g., a four-wire control link 339). The wired communication circuit 338 of the first lighting control device 330 may be coupled to the first wired communication circuit 326 of the control module 310 via the electrical terminals 312c, 312d of the control connector 312. The first wired communication circuit 326 of the control module 310 may be configured to generate, for example, analog control signals, such as 0-10V control signals, at the electrical terminals 312c, 312d of the control connector 312. For example, the first wired communication circuit 326 of the control module 310 may include a current sink circuit configured to draw current from the wired communication circuit 338 of the first lighting control device 330 to generate 0-10V control signals at the electrical terminals 312c, 312d of the control connector 312. The driver control circuit 336 of the first lighting control device 330 may be configured to adjust the intensity level of the lighting load 304 in response to the magnitude of the analog control signal received by the wired communication circuit 338. Alternatively or additionally, the first wired communication circuit 326 of the control module 310 may be configured to send messages (e.g., digital messages) to the wired communication circuit 338 of the first lighting control device 330 according to a digital communication protocol. For example, the first wired communication circuit 326 of the control module 310 and the wired communication circuit 338 of the first lighting control device 330 may include an RS-485 communication circuit. The driver control circuit 336 of the first lighting control device 330 may be configured to adjust the intensity level of the lighting load 304 in response to control data (e.g., commands) included in the messages received by the wired communication circuit 338. When the control module 310 is wired to the first lighting control device 330 in the first configuration, the module control circuit 314 of the control module 310 may be configured to disable the second wired communication circuit 328.

When the load control system 300 is in the second configuration as shown in fig. 16B, the control module 310 may be coupled to the second lighting control device 340 via a two-wire control link 349. The second lighting control device 340 may include a power connector 341 configured to be electrically coupled to the AC power source via the power line 304 for receiving the AC mains voltage V _AC and a load connector 342 configured to be electrically coupled to the lighting load 302. The second lighting control device 340 may also include a control connector 343, which may be configured to be electrically coupled to the control module 310 via a four-wire control link 349. For example, the control connector 343 of the first lighting control device 340 may include two electrical terminals, as shown in fig. 16B.

The second lighting control device 340 may include a load regulation circuit 344 (e.g., an LED drive circuit) that may be coupled between the power connector 341 and the load connector 342 and may be configured to control the amount of power delivered to the lighting load 302. The second lighting control device 340 may include a driver control circuit 346 configured to control the load regulation circuit 344 to adjust the amount of power delivered to the lighting load 302, thereby adjusting the intensity level of the lighting load. The second lighting control device 340 may also include a wired communication circuit 348 configured to be coupled to the control module 310 via a control connector 343 (e.g., a two-wire control link 339). The wired communication circuit 348 of the first lighting control device 340 may be coupled to the second wired communication circuit 328 of the control module 310 via the electrical terminals 312a, 312b of the control connector 312. The second wired communication circuit 328 of the control module 310 may be configured to send messages (e.g., digital messages) to the wired communication circuit 348 of the first lighting control device 340 according to a digital communication protocol (e.g., such as the digital lighting control interface (DALI) protocol). The driver control circuit 346 of the second lighting control device 340 may be configured to adjust the intensity level of the lighting load 304 in response to control data (e.g., commands) included in the message received by the wired communication circuit 348.

In a second configuration, the control module 310 may be configured to receive power from the two-wire control link 349 via the electrical terminals 312a, 312b of the control connector 312 (e.g., the two-wire control link 349 may be a dual-purpose power and communication link), and the electrical terminals 312c, 312d of the control connector 312 may remain unconnected. The second lighting control device 340 may not include a module power source for powering the control module 310. For example, the lighting control system 300 may include a bus power supply 306 in a second configuration. The bus power supply 306 may be configured to receive an AC mains voltage V _AC from an AC power supply and generate a bus voltage V _{Bus line}, which may be electrically coupled to a two-wire control link 349 (e.g., terminals 312a, 312b of the control connector 312) to provide communication over the two-wire control link 349 and to power the control module 310. The bus power supply 306 may be external to the lighting fixture on which the control module 310 is mounted and/or may be included in the lighting fixture in which the control module 310 is mounted. The module power supply 324 of the control module 310 may receive the bus voltage V _{Bus line} via the electrical terminals 312a, 312b of the control connector 312 (e.g., when the second wired communication circuit 326 of the control module 310 and/or the wired communication circuit 348 of the second lighting control device 340 are not transmitting messages over the two-wire control link 349). Additionally and/or alternatively, the bus power supply 306 may be included in the second lighting control device 340.

While the present disclosure has been described in terms of certain embodiments and generally associated methods, alterations and permutations of the embodiments and methods will be apparent to those skilled in the art. Thus, the above description of example embodiments does not constrain this disclosure. Other changes, substitutions, and alterations are also possible without departing from the spirit and scope of this disclosure.

Claims

1. A control module configured to be mounted in a fixture opening of a housing of a lighting fixture, the control module comprising:

A housing defining a central axis extending in a longitudinal direction, the housing having a housing opening at a first end, the housing configured to be received in the fixture opening of the lighting fixture;

A cover portion connected to the housing and covering the housing opening, the cover including a hole in which a lens is located;

At least one printed circuit board housed within the housing, the at least one printed circuit board having control circuitry and wireless communication circuitry mounted thereon;

a detector positioned to receive infrared energy through the lens of the cover portion, the detector electrically coupled to the control circuit such that the control circuit is configured to detect at least one of an occupied or unoccupied condition in a space surrounding the control module;

And an antenna comprising a first antenna element and a second antenna element electrically connected to the wireless communication circuit in a dipole antenna configuration, each of the first antenna element and the second antenna element extending from the at least one printed circuit board to a respective curved portion positioned between the cover portion and the housing, the respective curved portion curved around the detector;

Wherein the control circuit is configured to cause the wireless communication circuit to transmit a message in a wireless signal via the antenna.

2. The control module of claim 1, wherein the wireless communication circuit is configured to transmit the wireless signal at a transmission frequency via the antenna.

3. The control module of claim 2, wherein the detector comprises one or more thermoelectric elements responsive to infrared energy and a housing having a front surface with a first opening through which the thermoelectric elements receive the infrared energy.

4. The control module of claim 3, wherein the control module further comprises:

A shield located above the front surface of the housing of the detector and electrically coupled to a circuit common of the control module, the shield having a second opening disposed over the first opening of the housing, the second opening of the shield sized to shield the thermoelectric element from the wireless signals transmitted by the antenna in response to the wireless communication circuit.

5. The control module of claim 4, wherein the at least one printed circuit board comprises a control printed circuit board extending through the housing in the longitudinal direction, and

Wherein the control module further comprises:

a sensor printed circuit board on which the detector is mounted,

Wherein the shield is electrically coupled to the circuit common on the sensor printed circuit board.

6. The control module of claim 5, wherein the shield comprises a sidewall surrounding the housing of the detector and a protrusion extending from the sidewall and configured to be electrically connected to the circuit common of the control module.

7. The control module of claim 6, wherein the protrusion extends from a lower edge of the sidewall, the protrusion configured to be received in a through hole in the sensor printed circuit board and electrically coupled to an electrical pad surrounding the through hole for electrically coupling the shield to the circuit common of the control module.

8. The control module of claim 6, wherein the protrusion extends perpendicularly from the sidewall and is configured to electrically couple to an electrical pad on the sensor printed circuit board to electrically couple the shield to the circuit common of the control module.

9. The control module of claim 4, wherein the housing of the detector is electrically conductive and coupled to the circuit common of the control module, and the shield comprises an electrically conductive material electrically coupled to the housing of the detector.

10. The control module of claim 9, wherein the conductive shield comprises a conductive adhesive for electrically coupling the shield to the housing of the detector.

11. The control module of claim 4, wherein the second opening of the shield is circular and has a diameter of between about 1/20 and 1/50 of a wavelength of the wireless signal at the transmission frequency.

12. The control module of claim 4, wherein the second opening of the shield is rectangular and a longest dimension of the second opening has a length between about 1/20 and 1/50 of a transmission wavelength of the wireless signal at the transmission frequency.

13. The control module of claim 4, wherein an area of the second opening of the shield is smaller than an area of the first opening of the housing.

14. A control module according to claim 3, wherein the housing of the detector is electrically conductive and the first opening of the detector is square.

15. The control module of claim 2, wherein the detector includes one or more thermoelectric elements responsive to the infrared energy and further comprising a housing electrically conductive and coupled to the circuit common of the control module, the housing having a front surface with a first opening through which the thermoelectric elements receive the infrared energy, the opening of the housing of the detector being sized to shield the thermoelectric elements from wireless signals transmitted by the antenna responsive to the wireless communication circuit.

16. The control module of claim 15, wherein the opening of the housing is circular and has a diameter of between about 1/20 and 1/50 of a wavelength of the wireless signal at the transmission frequency.

17. The control module of claim 15, wherein the opening of the housing is rectangular and a longest dimension of the opening has a length between about 1/20 and 1/50 of a transmission wavelength of the wireless signal at the transmission frequency.

18. The control module of claim 2, wherein the detector is positioned relative to the antenna such that energy of the wireless signal transmitted by the antenna is at a maximum level.

19. The control module of claim 18, wherein a transmission power of the wireless communication circuit and the antenna is greater than 10dBm.

20. The control module of claim 1, wherein the housing defines a cylindrical shape centered about the central axis of the control module, and the aperture, the lens, and the detector of the cover portion are centered about the central axis of the control module.

21. The control module of claim 20, wherein the curved portions of the first and second antenna elements each comprise a circular segment, a center of the circular segment aligned with the central axis of the control module.

22. The control module of claim 21, wherein the first and second antenna elements comprise respective elongated portions extending from the at least one printed circuit board in the longitudinal direction and through the housing opening such that the curved portion is configured to be located outside of the housing of the lighting fixture.

23. The control module of claim 22, wherein the first antenna element and the second antenna element include respective offset portions extending between the respective elongated portions and the respective curved portions, the offset portions configured such that the curved portions are positioned farther from the central axis than the elongated portions.

24. The control module of claim 23, wherein the elongated portions extend parallel to one another between the at least one printed circuit board and the respective offset portions.

25. The control module of claim 21, wherein the respective curved portions of the first and second antenna elements define respective inner edges that extend along a circular path centered about the central axis of the control module, and wherein a region of the first opening of the detector is located within a region of the circular path of the first and second antenna elements.

26. The control module of claim 1, wherein the housing comprises a first clip and a second clip configured to mount the control module within the fixture opening.

27. The control module of claim 26, wherein the first clip and the second clip are positioned adjacent to one another, each of the first clip and the second clip comprising a plurality of teeth configured to engage a structure around the fixture opening, and wherein the teeth of the first clip and the second clip are staggered relative to one another such that one tooth of the first clip or the second clip is configured to engage the fixture opening at a single time.

28. The control module of claim 27, wherein as the control module is inserted into the equipment opening, a first tooth of the first clip is configured to first engage the structure around the equipment opening, a second tooth of the second clip is configured to engage the structure around the equipment opening after the first tooth, a third tooth of the first clip is configured to engage the structure around the equipment opening after the second tooth, and a fourth tooth of the second clip is configured to engage the structure around the equipment opening after the third tooth.

29. The control module of claim 27, wherein the first clip comprises a first number of teeth and the second clip comprises a second number of teeth such that the control module is configured to be installed in the fixture opening at a third number of different insertion depths, wherein the third number is equal to the first number plus the second number.

30. The control module of claim 1, wherein the at least one printed circuit board includes one or more first attachment tabs extending from a side of the at least one printed circuit board, the one or more first attachment tabs configured to attach the at least one printed circuit board to a manufacturing panel during manufacture of the control module, and wherein after the printed circuit board is detached from the manufacturing panel, the one or more first attachment tabs are configured to be received within a gap in the housing of the control module to align the at least one printed circuit board within the housing.

31. The control module of claim 30, wherein the at least one printed circuit board comprises a control printed circuit board extending through the housing in the longitudinal direction, and

Wherein the control module further comprises:

A sensor printed circuit board on which the detector is mounted, the sensor printed circuit board being electrically connected to the control printed circuit board via a flexible connector, the sensor printed circuit board being oriented perpendicular to the control printed circuit board such that the detector is directed toward the lens and the aperture in the cover portion;

Wherein the one or more first attachment projections are configured to prevent movement of the control printed circuit board in the longitudinal direction.

32. The control module of claim 31, further comprising:

A connector configured to electrically connect the control module to an external power source; and

A power printed circuit board to which the connector is mounted, the power printed circuit board being electrically connected to the control printed circuit board and the sensor printed circuit board via the flexible connector, the power printed circuit board being oriented parallel to the control printed circuit board, the power printed circuit board including one or more second attachment protrusions extending from a side of the power printed circuit board and configured to attach the power printed circuit board to a respective manufacturing panel during manufacturing of the control module;

Wherein the one or more second attachment projections of the power printed circuit board are configured to be received within respective gaps in the housing of the control module to align the power printed circuit board within the housing and prevent movement of the power printed circuit board in the longitudinal direction after the power printed circuit board is detached from the respective manufacturing panel.

33. The control module of claim 32, wherein the flexible connector forms an inner layer of each of the control printed circuit board, the sensor printed circuit board, and the power printed circuit board.

34. The control module of claim 1, wherein the curved portions of the first and second antenna elements are configured to be located outside of the housing of the lighting fixture.

35. A control module configured to be mounted in a fixture opening of a housing of a lighting fixture, the control module comprising:

A housing defining a central axis extending in a longitudinal direction, the housing having a housing opening at a first end, and the housing being configured to be received in the fixture opening of the lighting fixture;

a cover portion connected to the housing to cover the housing opening;

At least one printed circuit board housed within the housing and having control circuitry mounted thereon;

and an antenna located within the cover portion, wherein the control circuit is configured to transmit messages in wireless signals via the antenna;

Wherein the housing includes first and second clips positioned adjacent to each other, each of the first and second clips including a plurality of teeth configured to engage structures around the equipment opening to attach the control module within the equipment opening, and wherein the teeth of the first and second clips are staggered relative to each other such that one tooth of the first or second clip is configured to engage the equipment opening at a single time.

36. The control module of claim 35, further comprising:

A detector positioned to receive infrared energy through a lens in the aperture of the cover portion, the detector electrically coupled to the control circuit such that the control circuit is configured to detect an occupancy or vacancy condition in the space surrounding the control module.

37. The control module of claim 36, wherein the housing defines a cylindrical shape centered about the central axis of the control module, and the aperture, the lens, and the detector of the cover portion are centered about the central axis of the control module; and

Wherein the antenna comprises a first antenna element and a second antenna element electrically connected to a wireless communication circuit on the at least one printed circuit board in a dipole antenna configuration, each of the first antenna element and the second antenna element extending from the at least one printed circuit board to a respective curved portion positioned between the cover portion and the housing, the respective curved portions curved around the detector, the curved portions of the first antenna element and the second antenna element each comprising a circular segment, a center of the circular segment being aligned with the central axis of the control module.

38. The control module of claim 37, wherein the first and second antenna elements comprise respective elongated portions extending from the at least one printed circuit board in the longitudinal direction and through the housing opening such that the curved portion is configured to be located outside of the housing of the lighting fixture.

39. The control module of claim 38, wherein the first antenna element and the second antenna element include respective offset portions extending between the respective elongated portions and the respective curved portions, the offset portions configured such that the curved portions are positioned farther from the central axis than the elongated portions.

40. The control module of claim 37, wherein the detector includes one or more thermoelectric elements responsive to infrared energy and a housing having a front surface with a first opening through which the thermoelectric elements receive the infrared energy, the control module further comprising a shield located above the front surface of the housing of the detector and electrically coupled to a circuit common of the control module, the shield having a second opening disposed above the first opening of the housing, the second opening of the shield sized to shield the thermoelectric elements from the wireless signals transmitted by the antenna in response to the wireless communication circuit.

41. The control module of claim 35, wherein as the control module is inserted into the equipment opening, a first tooth of the first clip is configured to first engage the structure around the equipment opening, a second tooth of the second clip is configured to engage the structure around the equipment opening after the first tooth, a third tooth of the first clip is configured to engage the structure around the equipment opening after the second tooth, and a fourth tooth of the second clip is configured to engage the structure around the equipment opening after the third tooth.

42. The control module of claim 35, wherein the first clip comprises a first number of teeth and the second clip comprises a second number of teeth such that the control module is configured to be installed in the fixture opening at a third number of different insertion depths, wherein the third number is equal to the first number plus the second number.

43. A control module configured to be mounted in a fixture opening of a housing of a lighting fixture, the control module comprising:

a cover portion connected to the housing to cover the housing opening, the cover including a hole in which a lens is located;

At least one printed circuit board housed within the housing and having control circuitry mounted thereon; and

A detector positioned to receive infrared energy through the lens of the cover portion, the detector electrically coupled to the control circuit such that the control circuit is configured to detect an occupancy or a vacancy condition in a space surrounding the control module;

44. The control module of claim 43, wherein the housing defines a cylindrical shape centered about the central axis of the control module, and the aperture, the lens, and the detector of the cover portion are centered about the central axis of the control module; and

Wherein the control module further comprises:

An antenna comprising a first antenna element and a second antenna element electrically connected to a wireless communication circuit on the at least one printed circuit board in a dipole antenna configuration, each of the first antenna element and the second antenna element extending from the at least one printed circuit board to a respective curved portion positioned between the cover portion and the housing, the respective curved portions curved around the detector, the curved portions of the first antenna element and the second antenna element each comprising a circular segment, a center of the circular segment aligned with the central axis of the control module;

45. The control module of claim 44, wherein the first and second antenna elements include respective elongated portions extending from the at least one printed circuit board in the longitudinal direction and through the housing opening such that the curved portion is configured to be located outside of the housing of the lighting fixture.

46. The control module of claim 45, wherein the first antenna element and the second antenna element include respective offset portions extending between the respective elongated portions and the respective curved portions, the offset portions configured such that the curved portions are positioned farther from the central axis than the elongated portions.

47. The control module of claim 44 wherein the detector includes one or more thermoelectric elements responsive to infrared energy and a housing having a front surface with a first opening through which the thermoelectric elements receive the infrared energy, the control module further including a shield positioned above the front surface of the housing of the detector and electrically coupled to a circuit common of the control module, the shield having a second opening disposed above the first opening of the housing, the second opening of the shield sized to shield the thermoelectric elements from the wireless signals transmitted by the antenna in response to the wireless communication circuit.

48. The control module of claim 42, wherein as the control module is inserted into the implement opening, a first tooth of the first clip is configured to first engage the structure around the implement opening, a second tooth of the second clip is configured to engage the structure around the implement opening after the first tooth, a third tooth of the first clip is configured to engage the structure around the implement opening after the second tooth, and a fourth tooth of the second clip is configured to engage the structure around the implement opening after the third tooth.

49. The control module of claim 42, wherein the first clip comprises a first number of teeth and the second clip comprises a second number of teeth such that the control module is configured to be installed in the fixture opening at a third number of different insertion depths, wherein the third number is equal to the first number plus the second number.

50. A control module configured to be mounted in a fixture opening of a housing of a lighting fixture, the control module comprising:

at least one printed circuit board housed within the housing, the at least one printed circuit board having control circuitry mounted thereon; and

An antenna located in the cover portion, wherein the control circuit is configured to transmit messages in wireless signals via the antenna;

Wherein the at least one printed circuit board includes one or more attachment tabs extending from a side of the at least one printed circuit board, the one or more attachment tabs configured to attach the at least one printed circuit board to a manufacturing panel during manufacture of the control module, and wherein after the at least one printed circuit board is detached from the manufacturing panel, the one or more attachment tabs are configured to be received within a gap in the housing of the control module to align the at least one printed circuit board within the housing.

51. The control module of claim 50, further comprising:

52. The control module of claim 51, wherein the housing defines a cylindrical shape centered about the central axis of the control module, and the aperture, the lens, and the detector of the cover portion are centered about the central axis of the control module; and

Wherein the control module further comprises:

Wherein the antenna is configured to receive a wireless signal and the control circuit is configured to receive a message included in the wireless signal via the wireless communication circuit.

53. The control module of claim 52, wherein the first and second antenna elements include respective elongated portions extending from the at least one printed circuit board in the longitudinal direction and through the housing opening such that the curved portion is configured to be located outside of the housing of the lighting fixture.

54. The control module of claim 53, wherein the first antenna element and the second antenna element include respective offset portions extending between the respective elongated portions and the respective curved portions, the offset portions configured such that the curved portions are positioned farther from the central axis than the elongated portions.

55. The control module of claim 52 wherein the detector includes one or more thermoelectric elements responsive to infrared energy and a housing having a front surface with a first opening through which the thermoelectric elements receive the infrared energy, the control module further comprising a shield positioned above the front surface of the housing of the detector and electrically coupled to a circuit common of the control module, the shield having a second opening disposed above the first opening of the housing, the second opening of the shield sized to shield the thermoelectric elements from the wireless signals transmitted by the antenna in response to the wireless communication circuit.

56. A control module configured to be mounted in a fixture opening of a housing of a lighting fixture, the control module comprising:

57. The control module of claim 56 wherein the housing defines a cylindrical shape centered about the central axis of the control module and the aperture, the lens, and the detector of the cover portion are centered about the central axis of the control module; and

Wherein the control module further comprises:

wherein the control circuit is configured to cause the wireless communication circuit to transmit a message in a wireless signal via the wireless communication circuit.

58. The control module of claim 57, wherein the first antenna element and the second antenna element include respective elongated portions extending from the at least one printed circuit board in the longitudinal direction and through the housing opening such that the curved portion is configured to be located outside of the housing of the lighting fixture.

59. The control module of claim 58, wherein the first antenna element and the second antenna element include respective offset portions extending between the respective elongated portions and the respective curved portions, the offset portions configured such that the curved portions are positioned farther from the central axis than the elongated portions.

60. The control module of claim 57 wherein the detector includes one or more thermoelectric elements responsive to infrared energy and a housing having a front surface with a first opening through which the thermoelectric elements receive the infrared energy, the control module further including a shield positioned above the front surface of the housing of the detector and electrically coupled to a circuit common of the control module, the shield having a second opening disposed above the first opening of the housing, the second opening of the shield sized to shield the thermoelectric elements from the wireless signals transmitted by the antenna in response to the wireless communication circuit.