EP3371622A1 - Switching system - Google Patents
Switching systemInfo
- Publication number
- EP3371622A1 EP3371622A1 EP16793818.2A EP16793818A EP3371622A1 EP 3371622 A1 EP3371622 A1 EP 3371622A1 EP 16793818 A EP16793818 A EP 16793818A EP 3371622 A1 EP3371622 A1 EP 3371622A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- switching
- switching element
- tag
- saw
- evaluation unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/965—Switches controlled by moving an element forming part of the switch
- H03K17/967—Switches controlled by moving an element forming part of the switch having a plurality of control members, e.g. keyboard
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/0716—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips at least one of the integrated circuit chips comprising a sensor or an interface to a sensor
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
- H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
- H03K2217/94084—Transmission of parameters among sensors or between sensor and remote station
- H03K2217/94089—Wireless transmission
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
- H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
- H03K2217/945—Proximity switches
- H03K2217/95—Proximity switches using a magnetic detector
- H03K2217/958—Proximity switches using a magnetic detector involving transponders
Definitions
- the invention relates to a switching system according to the preamble of patent claim 1.
- Such a switching system is used to operate a device by a user.
- the switching system can be used in a motor vehicle.
- the switching system can be used as an operating element in and / or on the steering wheel of the motor vehicle. Further examples of the use of the switching system
- Switching system are its arrangement in the dashboard, in the center console, on the armrest in the door o. The like. In the vehicle.
- Such a switching system comprises a switchable between two switching positions switching element. For determining the switching position and / or the identification of
- the switching system is provided with an evaluation.
- the switching element an associated function for the associated device and / or triggered.
- the switching system is connected by means of electrical lines to the associated device.
- the invention has for its object to further develop the switching system such that can be dispensed with the electrical lines for connection to the associated device.
- an RFID tag operatively connected to the switching element.
- the evaluation unit has a transmitter and / or receiver for electromagnetic waves, wherein the transmitter and / or receiver for determining the switching position and / or the identification of the switching element cooperates with the RFID tag. Since no electrical lines from the switching system to the device to be operated are necessary, the inventive switching system can advantageously be arranged very flexible. Further embodiments of the invention are the subject of the dependent claims.
- the interaction of the RFID tag with the evaluation unit can be effected by the evaluation unit sending an interrogation signal and the RFID tag sending a response signal with information for identifying and / or
- Switching position of the switching element returns to the evaluation unit.
- the detection or determination of the switching position and / or the identification of the switching element returns to the evaluation unit.
- the RFID tag is a SAW (Surface Acoustic Wave) tag.
- the interrogation signal emitted by the evaluation unit is reflected by the SAW tag as coded response signal, which informs the information about the switching position and / or the identification of the switch, to the evaluation unit.
- the SAW tag may be operable without power.
- the SAW tag can be a lithium niobate or lithium tantalate substrate, a piezoelectric substrate such as a quartz, or the like.
- the SAW tag may include a tag antenna for receiving the interrogation signal.
- the tag antenna can in turn be connected to an interdigital transducer (IDT) of the SAW tag converting the electromagnetic signal of the interrogation pulse into a surface acoustic wave (SAW pulse).
- IDT interdigital transducer
- the SAW tag may include at least one surface acoustic wave code reflector disposed at a predetermined position of the substrate. The reflected at the code reflector portion of the acoustic SAW pulse can in a simple manner on
- Interdigital transducer IDT
- IDT Interdigital transducer
- the particular property of the lithium nibate or lithium tantalate substrate is that the surface acoustic waves propagate at a slow rate, so that substrates of small size are also possible.
- Switching system can be made very compact in this case.
- the interdigital transducer may comprise two metallic electrodes.
- the electrode may have a finger-like and / or comb-like structure.
- the code reflector may consist of a metallic strip.
- the metallic strip for the code reflector may also have a finger and / or comb-like structure.
- the metal may be aluminum, which is particularly inexpensive.
- the switching element can be connected to the code reflector of the SAW tag.
- the reflector is activated, namely when the switch is open or deactivated, namely when the switch is closed.
- the carrier wave for the interrogation signal can be in the microwave range, in particular with a frequency between approximately 1 to 300 GHz. Preference is given to the frequency range between 1 and 3 GHz.
- a switching system is provided with at least two switching elements.
- a single, SAW tag for the switching elements.
- the SAW tag has in each case a code reflector for the connection of the respective switching element.
- Switching element determined based on the response signal received from the evaluation unit.
- a SAW tag is provided for each switching element.
- the respective SAW tag has a code reflector for the connection of the respective switching element.
- the code reflectors can be arranged differently on the individual SAW tags.
- the invention provides a method for operating a switching system with a switchable between two switching positions switching element.
- this method the switching position and / or the identification of the switching element of a
- Evaluation unit determines what the switching element with a SAW tag in
- the evaluation unit sends an interrogation signal to the SAW tag.
- the interrogation signal is received by the SAW tag and coded corresponding to the switching position and / or identification of the switching element.
- the interrogation signal thus encoded is reflected by the SAW tag as a coded response signal to the evaluation unit. From the evaluation then the switching position and / or the
- switches are used to operate the systems by humans. These switches are usually wired into the system. In addition, due to the wired connection, a fixed assignment of the switch to the rest of the system takes place. Are the Switch and the rest of the system spatially separated and / or in no fixed position to each other (eg switches on the steering wheel), the wired connection to the rest of the system is expensive and / or technically complex.
- the invention enables wireless detection of switching operations and their association with a defined switch.
- a switch is connected to a reflector of the SAW tag which, depending on the switching state, activates the reflector (switch open) or deactivates (switch closed).
- an RF reader transmits a pulse which is received by the SAW tag equipped with a switch.
- this pulse is delayed several times as a function of the arrangement and number of reflectors and output as a pulse train via an antenna, in order to then be evaluated by the reader. Since the pulse sequence emitted by the tag changes as a result of the actuation of the switch, it is thus possible to detect the switching operation.
- the assignment of the switch is ensured by a separate arrangement for each switch of the non-switched reflectors.
- a wireless identifiable switch identifier Created by means of the invention, a wireless identifiable switch identifier.
- the invention allows for a larger number of hard-to-connect switches a cost-effective replacement for previous systems, because on account of a passive SAW tag, the cable connections including plug accounts for the rest of the system or unlike a today usually evaluated via a bus complex switching system For example, in the motor vehicle, a switch-side bus driver and microcontroller can be omitted. If one then presupposes that a reader in the overall system is already available for other applications, for example for the
- FIG. 2 shows a switching system according to the invention as a block diagram
- Fig. 3 shows the switching system of Fig. 2 according to a first embodiment
- Fig. 4 shows the switching system of Fig. 2 according to a second embodiment.
- a switching element 3 and an evaluation unit 2 is provided in the conventional switching system 1 according to FIG. 1, a switching element 3 and an evaluation unit 2 is provided.
- the switching element 3 is connected by means of an electrical line 4 to the evaluation unit 2, so that there is a wired switch connection 4 for the switching element 3 in the switching system 1.
- the evaluation unit 2 determines the respective switching element 3 and its switching position via the wired
- the switching system 1 ' shown schematically in FIG. 2 comprises a switching element 3 switchable between two switching positions and an evaluation unit 2' for determining the switching position and / or the identification of the switching element 3.
- an evaluation unit 2' for determining the switching position and / or the identification of the switching element 3.
- an RFID tag 6 which is in operative connection with the switching element 3 is provided in the switching system 1 'according to the invention.
- the evaluation unit 2 ' has a transmitter and / or receiver 7 for electromagnetic waves 8 on.
- the transmitter and / or receiver 7 cooperates with the RFID tag 6 to determine the switching position and / or the identification of the switching element 3. Because of this interaction is thus a wireless switch connection 4 'between the
- Evaluation unit 2 and the switching element 3 and the RFID tag 6 comprehensive wireless switch unit 5 created.
- the interaction of the RFID tag 6 with the evaluation unit 2' takes place by the evaluation unit 2 'sending an interrogation signal 9 from the transmitter and / or receiver 7 with associated antenna 17 of the electromagnetic waves 8 as a carrier wave.
- the frequency of the carrier wave for the interrogation signal 9 is in the microwave range, in particular between about 1 to 300 GHz and preferably between 1 to 3 GHz.
- the RFID tag 6 then sends back a response signal 10, which encodes a corresponding information, to the evaluation unit 2 '. This makes it possible to determine the switching position and / or the identification of the switching element 3 with the aid of the code contained in the response signal 10 in the evaluation unit 2 '.
- the RFID tag 6 is a SAW (Surface Acoustic Wave) tag.
- the interrogation signal 9 emitted by the evaluation unit 2 ' is reflected by the SAW tag 6 as a coded response signal 10 which contains the information about the switching position and / or the identification of the switch 3, to the evaluation unit 2'. Since the response signal 10 is merely reflected, the SAW tag 6 can be made operable without power.
- the SAW tag 6 comprises a substrate 11 consisting of lithium niobate or lithium tantalate.
- the substrate for the SAW tag 6 can also be a piezoelectric substrate 11, for example a quartz.
- the SAW tag 6 has a tag antenna 12 for receiving the interrogation signal 9.
- the tag antenna 12 is connected to an interdigital transducer (IDT) 13 of the SAW tag 6 converting the electromagnetic signal of the interrogation pulse 9 into a surface acoustic wave (SAW pulse) 14.
- the SAW pulse 14 then moves over the surface of the substrate 1 1.
- the SAW tag 6 has at least one at a predetermined position of the substrate 1 1 arranged code reflector 15 for the surface acoustic wave 14.
- a portion 14b of the SAW pulse 14 is then reflected and a further portion 14c of the SAW pulse is transmitted.
- the reflected portions 14b overlap to form a total reflected SAW pulse 14a.
- the acoustic SAW pulse 14a reflected at the code reflector 15 or the code reflectors 15 is converted back into an electromagnetic signal at the interdigital transducer 13 and sent by the tag antenna 12 as a response signal 10.
- the response signal 10 is encoded according to the arrangement of the code reflector 15 and the code reflectors 15 and the switching position of the respective switching element 3.
- the appropriately coded reflected response signal 10 is then received by the transmitter 17 and / or receiver 7 in the evaluation unit 2 'in the manner of a reader and decoded to determine the switching position and / or the identification of the switching element 3 in the evaluation unit 2'.
- the interdigital transducer 13 comprises two metallic electrodes 16 which are located on the substrate 11.
- the electrode 16 has a finger-like and / or comb-like structure.
- the code reflector 15 consists of a substrate 1 1 located on the metallic strip, which may also have a finger and / or comb-like structure.
- the metal is
- a plurality of switching elements 3, 3 ' can thus also be connected to a SAW tag 6.
- the SAW tag 6 in each case has a code reflector 15, 15 'for the connection of the respective switching element 3, 3', the code reflectors 15, 15 ', however, being arranged at different positions on the substrate 11.
- the identification and the switching position of the respective switching element 3, 3 'on the basis of the evaluation unit 2' received response signal 10 allows.
- a switch arrangement with at least two switching elements 3, 3 'for switching and / or triggering of functions can be represented in this manner.
- FIG. 4 A switch arrangement for switching and / or triggering functions according to a further exemplary embodiment can be seen in FIG. 4.
- the switch arrangement again comprises two switching elements 3, 3 '.
- a SAW tag 6, 6 ' is provided here for each switching element 3, 3'.
- the respective SAW tag 6, 6 ' has a code reflector 15, 15' for the connection of the respective switching element 3, 3 '. That is, the switching element 3 is connected to the code reflector 15 of the SAW tag 6 and the switching element 3 'to the code reflector 15' of the SAW tag 6 '.
- the code reflectors 15, 15 ' are arranged at different distances with respect to the interdigital transducer 13, 13' of the SAW tag 6, 6 '. That of the
- Evaluation unit 2 'emitted interrogation signal 9 is reflected by the SAW tag 6 as a response signal 10 and the SAW tag 6' as a response signal 10 '.
- the response signals 10, 10 ' are in turn encoded as described above, such that the determination of the identification and / or the switching position of the respective switching element 3, 3' on the basis of the
- Evaluation unit 2 'received response signal 10, 10' is possible.
- Antenna (from transmitter and / or receiver)
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015014248 | 2015-11-05 | ||
PCT/EP2016/076646 WO2017077023A1 (en) | 2015-11-05 | 2016-11-04 | Switching system |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3371622A1 true EP3371622A1 (en) | 2018-09-12 |
Family
ID=57256287
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16793818.2A Withdrawn EP3371622A1 (en) | 2015-11-05 | 2016-11-04 | Switching system |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3371622A1 (en) |
DE (1) | DE102016013007A1 (en) |
WO (1) | WO2017077023A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112842568B (en) * | 2021-03-23 | 2023-07-25 | 桂林市啄木鸟医疗器械有限公司 | Root canal preparation machine |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6903662B2 (en) * | 2002-09-19 | 2005-06-07 | Ergodex | Computer input device with individually positionable and programmable input members |
US8441168B2 (en) * | 2008-08-06 | 2013-05-14 | Applied Sensor Research & Development | Saw sensor tags with enhanced performance |
-
2016
- 2016-11-02 DE DE102016013007.5A patent/DE102016013007A1/en not_active Withdrawn
- 2016-11-04 WO PCT/EP2016/076646 patent/WO2017077023A1/en active Application Filing
- 2016-11-04 EP EP16793818.2A patent/EP3371622A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
DE102016013007A1 (en) | 2017-05-11 |
WO2017077023A1 (en) | 2017-05-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE1274392B (en) | Device for recognizing vehicles, in particular railroad cars | |
EP0677752A1 (en) | System for Identification and/or detection | |
DE19911369A1 (en) | Surface-wave converter device and identification system herewith | |
EP1499034B1 (en) | Circuit and method for phase modulation of transponders based on backscattering | |
DE102011018897A1 (en) | Operating device for a motor vehicle and method for driving a Haptikeinrichtung | |
DE102015007108A1 (en) | Operating system for a motor vehicle and method for operating such an operating system | |
WO2017077023A1 (en) | Switching system | |
DE102007057714A1 (en) | Antenna arrangement and method | |
EP2772986A1 (en) | Motor vehicle door handle with antenna assembly | |
EP2018578B1 (en) | Method for localizing objects by means of an imaging radar system and transponder for localizing objects by means of such radar systems | |
EP1363400A2 (en) | Safety switch | |
EP1145460A2 (en) | Device for transmitting signals in a vehicle | |
EP3640896B1 (en) | Vehicle door handle with near field communication electronics | |
DE2324004C3 (en) | Remote control system for controlling the operation of an electrical device | |
EP0952283A2 (en) | Remote control system for driving vehicles access control devices | |
EP2692451B1 (en) | Electrical circuit for operating a transceiver unit | |
DE19702009C2 (en) | Monitoring device with monitoring switches | |
EP3939163B1 (en) | Control unit for a vehicle | |
EP3835799A1 (en) | Circuit device for security applications | |
DE29706251U1 (en) | Remote control | |
DE2245238A1 (en) | UNIVERSAL REMOTE CONTROL DEVICE | |
DE3116337A1 (en) | Contactless switch | |
DE102005020006A1 (en) | Line-free self-powered switching element | |
DE19710512A1 (en) | Transmitter for generating and radiating electromagnetic waves | |
DE855421C (en) | Input filter for overlay receiver |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20180425 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
17Q | First examination report despatched |
Effective date: 20200401 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20220503 |