CN210958906U - Switch control circuit and device - Google Patents
Switch control circuit and device Download PDFInfo
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- CN210958906U CN210958906U CN201921650395.4U CN201921650395U CN210958906U CN 210958906 U CN210958906 U CN 210958906U CN 201921650395 U CN201921650395 U CN 201921650395U CN 210958906 U CN210958906 U CN 210958906U
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Abstract
The utility model is suitable for the technical field of electric appliance control, and provides a switch control circuit and a device, wherein the circuit comprises a power module, a communication module, a control module and a driving module; the power supply module is respectively connected with the alternating current, the communication module, the control module and the driving module and is used for converting the alternating current into direct current; the communication module is respectively connected with the power supply module and the control module, and is used for carrying out wireless communication with external equipment and sending a received wireless communication signal to the control module so that the control module correspondingly outputs a control signal to the driving module to control the working state of the driving module; the driving module is respectively connected with the alternating current, the power supply module, the control module and the external load and is used for driving the external load connected with the driving module to work when the alternating current is communicated or correspondingly driving the working state of the external load according to a control signal output by the control module. The utility model provides a current switching device install and use not convenient problem.
Description
Technical Field
The utility model belongs to the technical field of electrical apparatus control, especially, relate to a switch control circuit and device.
Background
In the light control mode, no matter the pull switch in the early stage or the switch panel which is most commonly used at present, the common characteristics of the pull switch and the switch panel are that the working state of the lamp is controlled by one control switch, however, the control switch needs to be installed, decoration, construction and wiring, the installation is very troublesome, when the installation position is found out in the later stage, the installation position cannot be conveniently controlled by the switch, the switch needs to be changed, and the change process is more troublesome.
The intelligent panel switch that single live wire intelligence switch that appears on the existing market and live wire zero line insert simultaneously still escapes the problem of wiring for the switch construction specially, because intelligent panel switch still controls the lamp through a switch, and intelligent panel switch itself also needs the power supply moreover.
In recent years, a wireless remote control switch free of wiring appears in the market, only solves the problem of wiring, but has the defect that the wireless remote control switch is not compatible with the most common switch panel control mode at present, is suitable for installation in new decoration, but is not suitable for original decoration replacement, particularly old people and children are used to the original mode of controlling the light to be turned on/off through the switch panel, and the old people and children are required to find a remote controller when turning on/off the light every time, so that the user is not used to the wireless remote control switch.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of the utility model is to provide a switch control circuit aims at solving the not convenient problem of current switching device installation and use.
The embodiment of the utility model provides a realize like this, a switch control circuit, include: the device comprises a power module, a communication module, a control module and a driving module;
the power supply module is respectively connected with the alternating current, the communication module, the control module and the driving module and is used for converting the alternating current into direct current so as to provide working power supply for the communication module, the control module and the driving module;
the communication module is respectively connected with the power supply module and the control module and is used for carrying out wireless communication with external equipment and sending the received wireless communication signal to the control module so that the control module correspondingly controls the working state of the driving module according to the wireless communication signal;
the control module is respectively connected with the power supply module, the communication module and the driving module and is used for correspondingly outputting a control signal to the driving module according to the wireless communication signal sent by the communication module so as to control the working state of the driving module;
the driving module is respectively connected with the alternating current, the power supply module, the control module and an external load and is used for driving the external load connected with the driving module to work when the alternating current is communicated or driving the working state of the external load correspondingly according to a control signal output by the control module.
Further, the driving module includes:
the normally closed relay is connected with the alternating current, the power supply module and the external load and is used for controlling the on-off state of the external load connected with the power supply module when the alternating current is communicated;
and the driving unit is connected with the normally closed relay and the control module and is used for correspondingly driving the normally closed relay to be switched on and off according to the control signal output by the control module.
Further, the driving module further includes:
the follow current unit is connected between the power supply module and the driving unit and used for discharging the normally closed relay when the driving unit is disconnected;
and the filtering unit is connected with the normally closed relay, the power supply module and the follow current unit and used for filtering.
Furthermore, the contact both ends of normally closed relay respectively with alternating current with external load is connected, the coil both ends of normally closed relay respectively with power module with drive unit connects, drive unit include first triode, with first resistance and the second resistance that first triode is connected, the collecting electrode of first triode with the first end of coil of normally closed relay is connected, the projecting pole of first triode with first resistance one end and ground are connected, the base of first triode with the first resistance other end reaches second resistance one end is connected, the second resistance other end with control module connects.
Furthermore, the follow current unit is a follow current diode, the filtering unit is a filtering capacitor, the anode of the follow current diode is connected with the first end of the coil of the normally closed relay and the driving unit respectively, the cathode of the follow current diode is connected with the second end of the coil of the normally closed relay and the power module respectively, one end of the filtering capacitor is connected with the power module, and the other end of the filtering capacitor is grounded.
Further, the power module includes:
a rectifying unit electrically connected to the alternating current for rectifying the alternating current into direct current;
a voltage reducing unit connected to the rectifying unit and reducing the rectified DC to a first voltage;
and the voltage stabilizing unit is connected with the voltage reducing unit and used for stabilizing the first voltage to the second voltage.
Further, the rectifying unit includes:
the rectifier bridge is connected with the alternating current and used for shaping the alternating current into direct current;
and the filter circuit is connected with the output end of the rectifier bridge and is used for filtering the shaped direct current.
Furthermore, the communication module is any one or more of a WIFI module, a Bluetooth module, a ZIGBEE module, an NB-IOT module and an RF module.
Another embodiment of the present invention further provides a switch control device, wherein the switch control device includes the above switch control circuit.
The embodiment of the utility model provides an on-off control circuit, power module through setting realizes communication module, control module, and drive module's work power supply, make through the communication module who sets up can carry out wireless communication with external equipment, make the operating condition that can be according to the corresponding control drive module of wireless communication signal of communication module transmission through the control module who sets up, make drive module carry out on-off state's control to the external load rather than being connected, drive module and alternating current and external load through setting up are connected, and when the alternating current intercommunication, the external load of drive carries out work, or realize the corresponding control to external load according to the control signal of the control module output of receipt. The switch, the external load and the alternating current connection can be directly controlled under the condition that the existing control switch is installed and is not changed, and the external load can be controlled in a mode of increasing wireless control on the basis of being compatible with the existing control switch to control the external load, so that the original use habit can be reserved, and wireless control can be performed without rewiring; or the external load can be controlled in a wireless control mode without special wiring and direct connection between the external load and the alternating current, so that the labor cost and the material cost of installation are reduced, the convenience and the flexibility of control of the load lamp are improved, and the problem that the existing switch device is inconvenient to install and use is solved.
Drawings
Fig. 1 is a block diagram of a switch control circuit according to an embodiment of the present invention;
fig. 2 is a block diagram of a switch control circuit according to another embodiment of the present invention;
fig. 3 is a schematic circuit diagram of a driving module in a switch control circuit according to another embodiment of the present invention;
fig. 4 is a schematic circuit diagram of a power module in a switch control circuit according to another embodiment of the present invention;
fig. 5 is a schematic circuit diagram illustrating a connection between a communication module and a control module in a switch control circuit according to another embodiment of the present invention;
fig. 6 is a schematic diagram of an implementation circuit of a switch control circuit according to another embodiment of the present invention;
fig. 7 is a schematic circuit topology diagram of the switch control device according to an embodiment of the present invention connected to the outside;
fig. 8 is a schematic circuit topology diagram of a switch control device according to another embodiment of the present invention and an external connection.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The utility model discloses a power module who sets up realizes communication module, control module, and drive module's work power supply, make through the communication module who sets up and to carry out wireless communication with external equipment, make the operating condition that can be according to the corresponding control drive module of wireless communication signal of communication module transmission through the control module who sets up, make drive module carry out on-off's control to the external load rather than being connected, drive module through setting up is connected with alternating current and external load, and when the alternating current intercommunication, drive external load and carry out work, or realize the corresponding control to external load according to the control signal of the control module output of receipt. The switch, the external load and the alternating current connection can be directly controlled under the condition that the existing control switch is installed and is not changed, and the external load can be controlled in a mode of increasing wireless control on the basis of being compatible with the existing control switch to control the external load, so that the original use habit can be reserved, and wireless control can be performed without rewiring; or the external load can be controlled in a wireless control mode without special wiring and direct connection between the external load and the alternating current, so that the labor cost and the material cost of installation are reduced, the convenience and the flexibility of control of the load lamp are improved, and the problem that the existing switch device is inconvenient to install and use is solved.
Example one
Please refer to fig. 1, which is a block diagram of a switch control circuit according to a first embodiment of the present invention, the switch control circuit includes: a power module 20, a communication module 30, a control module 40, and a driving module 50;
the power module 20 is respectively connected to the ac power supply, the communication module 30, the control module 40, and the driving module 50, and is configured to convert ac power into dc power to supply power for the communication module 30, the control module 40, and the driving module 50;
the communication module 30 is respectively connected to the power module 20 and the control module 40, and is configured to perform wireless communication with an external device, and send a received wireless communication signal to the control module 40, so that the control module 40 controls the operating state of the driving module 50 according to the wireless communication signal;
the control module 40 is respectively connected to the power module 20, the communication module 30 and the driving module 50, and is configured to correspondingly output a control signal to the driving module 50 according to the wireless communication signal sent by the communication module 30, so as to control the operating state of the driving module 50;
the driving module 50 is respectively connected to the ac power supply module 20, the control module 40, and the external load 100, and is configured to drive the external load 100 connected thereto to operate when the ac power is supplied, or drive the operating state of the external load 100 correspondingly according to the control signal output by the control module 40.
Wherein, in an embodiment of the utility model, this power module 20 is connected with the both ends of alternating current for convert the alternating current into the direct current, and through filtering, step-down, after handling such as steady voltage, provide the work power supply of communication module 30, control module 40 and the normal work of drive module 50, it is specific, this direct current supply voltage includes but not limited to 3V, 3.3V, 5V, 12V etc. and it mainly sets up according to communication module 30, control module 40 and the required supply voltage of the normal work of drive module 50, does not do the restriction here.
Wherein, in an embodiment of the present invention, the communication module 30 can perform wireless communication with an external device, and when implemented, the communication module includes, but is not limited to, any one or more of a WIFI module, a bluetooth module, a ZIGBEE module, an NB-IOT module, and an RF module. Specifically, the external device includes, but is not limited to, an intelligent terminal, an intelligent tablet, an intelligent wearable device, an intelligent speaker, an intelligent camera, a remote controller, an intelligent gateway, and the like, and at this time, the external device can send a control instruction to the communication module 30 after establishing communication connection with the communication module 30, so that the communication module 30 receives and sends the control instruction to the control module 40 for signal processing.
The RF module a1 is used for receiving and transmitting signals during the process of receiving and transmitting information, and in particular, receives downlink information of a base station and then processes the downlink information to the control module 40; in addition, uplink data is transmitted to the base station. Generally, the RF radio frequency module a1 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like. In specific implementation, the RF module a1 includes, but is not limited to, a wireless antenna transceiver module (2G \3G \4G \5G), and a Sub-1G ASK \ FSK wireless module.
In addition, the RF radio frequency module a1 may also communicate with networks and other devices through wireless communication. The wireless communication may use any communication standard or protocol, including but not limited to Global System for mobile communication (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), email, Short Messaging Service (SMS), and the like.
In an embodiment of the present invention, the control module 40 is configured to receive the wireless communication signal sent by the communication module 30, and output a control signal to the driving module 50 after processing the wireless communication signal accordingly, so that the driving module 50 performs corresponding driving control on the external load 100. In a specific implementation, the control module 40 may be a Micro Controller Unit (MCU) for controlling data processing. It is understood that, in other embodiments of the present invention, the control module 40 may also be other control devices, which are set according to actual use requirements, and are not limited herein. Further, it should be noted that, since there exists the communication module 30 having the data processing control function, the communication module 30 and the control module 40 may be integrated into a whole, and the control module 40 is included in the chip of the communication module 30. That is, the communication module 30 with data processing control is directly connected to the driving module 50, so as to directly and correspondingly control the operating state of the driving module 50 according to the control command received by the communication module 30. Therefore, the arrangement of the separation or integration between the communication module 30 and the control module 40 is not limited herein, and is set according to the actual use requirement.
In an embodiment of the present invention, the driving module 50 is connected to the ac power supply, the power module 20, the control module 40, and the external load 100, and is used to drive the external load 100 to work at the moment when the ac power is connected, or to drive the external load 100 connected to the driving module according to the control signal output by the control module 40. In specific implementation, the driving module 50 may include at least one relay, and the relay is closed when the ac power is turned on, so that the external load 100 connected to the driving module starts to operate, or the relay is correspondingly driven to be closed or opened after receiving the control signal of the control module 40, so as to control the on/off state of the external load 100.
Specifically, referring to fig. 7 or fig. 8, it is a circuit topology diagram of the switch control device 10 connected to the ac power and the external load 100, wherein the switch control device 10 includes a switch control circuit provided by the present invention.
In an embodiment of the present invention, referring to fig. 7, the first end of the alternating current is connected to one end of the control switch 200, the other end of the control switch 200 is connected to one end of the switch control device 10, the switch control device 10 is connected to the external load 100, and the other end of the switch control device 10 is connected to the second end of the alternating current, specifically, in this embodiment, the first end of the alternating current is a live wire end, the second end of the alternating current is a zero wire end, and the external load 100 is specifically a load lamp.
During normal use, when a user closes the control switch 200, the alternating current is in a connected state, and the direct circulation driving module 50 supplies power to the external load 100, so that the load lamp can be normally lightened to emit light; when a user needs to stop the operation of the external load 100, the user can stop the operation of the external load 100 when the user loses power by turning off the control switch 200; or the user can perform wireless communication with the switch control device 10 through an external device and send a control command to the switch control device 10, so that the control module 40 in the switch control device 10 controls the driving module 50 to stop the operation of the external load 100 connected thereto.
Therefore, in the present embodiment, the switch control device 10 can be directly installed between the control switch 200 for controlling the on/off state of the external load 100 and the ac power without newly installing a switch wiring in the existing home decoration structure. At this time, the user can directly and manually adjust the on-off state of the control switch 200 without changing the use habit of the user, so as to control the on-off of the load lamp; meanwhile, the user can also control the on/off of the load lamp in a wireless manner, and further, when the user needs to control the load lamp in a wireless manner, the user firstly closes the control switch 200 to enable the load lamp to be in a working state, and can further control the on/off state of the load lamp in a wireless manner by using external equipment.
In another embodiment of the present invention, referring to fig. 8, the live wire end and the neutral wire end of the alternating current are respectively connected to the switch control device 10, and the switch control device 10 is connected to the external load 100. Compared with the above embodiment, the embodiment lacks a control switch 200 for controlling the on-off state of the external load 100, and at this time, the specific operation can refer to the above, when the alternating current is connected instantaneously, the external load 100 is directly powered by the driving module 50, so that the load lamp is normally lighted to emit light, and further, the user performs wireless communication with the switch control device 10 through the external device, so that the on-off state of the external load 100 connected with the user is controlled.
It should be noted that, in the specific implementation, the control module 40 may be set in advance in a software manner so as to send a control signal to the driving module 50 at the moment when the control module acquires the power supply of the power module 20, so as to drive the external load 100 to stop working. That is, when the ac power is supplied to the switch control device 10, the driving module 50 in the switch control device 10 drives the external load 100 to work, and the power module 20 obtains the ac power and rectifies the ac power to provide the dc power to the control module 40 to supply the normal working power to the driving module 50, at this time, the control module 40 directly sends a control signal to the driving module 50 according to a preset mode, and the driving module 50 correspondingly drives the external load 100 to stop working, so that under the condition that the switch control module 40 is directly connected with the ac power and the load, it can be preset that the control module 40 controls the driving module 50 to stop working of the external load 100, when the user needs the external load 100 to work, the external device is used to control the state of the external load 100 in a wireless mode, so as to avoid power failure recovery or power recovery of the ac power, which directly drives the external load 100 to work, thereby causing inconvenience and power consumption. Or, the control module 40 has a power failure memory function, and whenever power failure or ac power is restored, the control module 40 correspondingly controls the working state of the driving module 50, so that the switching state of the external load before power failure can be restored.
Therefore, in this embodiment, when the home is newly decorated, the control switch 200 is installed without special wiring, and only the switch control device 10 needs to be arranged between the external load 100 and the alternating current, and at this time, the on-off control of the external load 100 can be realized directly through the wireless control of the external device, so that the labor cost and the material cost of installation are reduced, the convenience and the flexibility of the control of the load lamp are improved, and the light control is realized.
In this embodiment, the power module that sets up realizes communication module, control module, and drive module's work power supply, make through the communication module that sets up and to carry out wireless communication with external equipment, make the operating condition that can be according to the corresponding control drive module of wireless communication signal of communication module transmission through the control module that sets up, make drive module carry out the control of on-off state to the external load of being connected with it, be connected with alternating current and external load through the drive module that sets up, and when the alternating current communicates, drive external load and carry out work, or realize the corresponding control to external load according to the control signal of receiving control module output. The switch, the external load and the alternating current connection can be directly controlled under the condition that the existing control switch is installed and is not changed, and the external load can be controlled in a mode of increasing wireless control on the basis of being compatible with the existing control switch to control the external load, so that the original use habit can be reserved, and wireless control can be performed without rewiring; or the external load can be controlled in a wireless control mode without special wiring and direct connection between the external load and the alternating current, so that the labor cost and the material cost of installation are reduced, the convenience and the flexibility of control of the load lamp are improved, and the problem that the existing switch device is inconvenient to install and use is solved.
Example two
Please refer to fig. 2, which is a block diagram of a switch control circuit according to a second embodiment of the present invention, the second embodiment has a structure substantially the same as that of the first embodiment, and the difference is that in this embodiment, the driving module 50 includes:
a normally closed relay 51 connected to the ac power supply, the power supply module 20, and the external load 100, for controlling the on/off state of the external load 100 connected thereto when the ac power is supplied;
and the driving unit 52 is connected with the normally closed relay 51 and the control module 40 and is used for correspondingly driving the normally closed relay 51 to be switched on and off according to the control signal output by the control module 40.
Further, the driving module 50 further includes:
a flywheel unit 53 connected between the power supply module 20 and the driving unit 52, for discharging the normally closed relay 51 when the driving unit 52 is turned off;
and a filtering unit 54 connected to the normally closed relay 51, the power supply module 20, and the flywheel unit 53, and configured to perform filtering.
Further, in an embodiment of the present invention, the power module 20 includes:
a rectifying unit 21 electrically connected to the alternating current and configured to rectify the alternating current into direct current;
a voltage step-down unit 22 connected to the rectifying unit 21 and configured to step down the rectified dc power to a first voltage;
and a voltage stabilizing unit 23 connected to the voltage lowering unit 22 for stabilizing the first voltage to the second voltage.
Further, in an embodiment of the present invention, the rectifying unit 21 includes:
a rectifier bridge BD1 electrically connected to the ac power for rectifying the ac power into dc power;
and the LC-pi type filter circuit is connected with the output end of the rectifier bridge BD1 and is used for filtering the shaped direct current.
Further, in an embodiment of the present invention, in specific implementation, as shown in fig. 3, two ends of a contact of the normally-closed relay 51 are respectively connected to the ac power and the external load 100, two ends of a coil of the normally-closed relay 51 are respectively connected to the power module 20 and the driving unit 52, the driving unit 52 includes a first transistor Q1, a first resistor R1 and a second resistor R2 connected to the first transistor Q1, a collector c of the first transistor Q1 is connected to a first end of the coil of the normally-closed relay 51, an emitter e of the first transistor Q1 is connected to one end of a first resistor R1 and ground, a base b of the first transistor Q1 is connected to the other end of the first resistor R1 and one end of a second resistor R2, and the other end of the second resistor R2 is connected to the control module 40. In specific implementation, the first end of the contact of the normally closed relay 51 is connected with the first end of the alternating current, or a control switch is connected between the first end of the contact of the normally closed relay 51 and the first end of the alternating current. The second end of the contact of the normally closed relay 51 is connected with the external load 100, wherein the first end of the alternating current is a live wire end. The first resistor R1 is a pull-down resistor, and the second resistor R2 is a current-limiting resistor. As shown IN FIG. 3, L-IN represents the terminal of the line connected to the AC power, and L-OUT represents the terminal connected to the external load 100.
Further, in an embodiment of the present invention, the freewheeling unit 53 is a freewheeling diode, the filtering unit 54 is a filtering capacitor C1, the anode of the freewheeling diode is connected to the first end of the coil of the normally closed relay 51 and the driving unit 52, the cathode of the freewheeling diode is connected to the second end of the coil of the normally closed relay 51 and the power module 20, the one end of the filtering capacitor C1 is connected to the power module 20, and the other end of the filtering capacitor C1 is grounded.
Further, in an embodiment of the present invention, referring to fig. 4, the rectifying unit 21 in the power module 20 includes a rectifier bridge BD1 and an LC-pi filter circuit, and in practical implementation, a fuse FR1 is further disposed between the first end of the alternating current and the input end of the rectifier bridge BD1, and is used for implementing overload protection on the power module 20. The other input end of the rectifier bridge BD1 is connected to the second end of the alternating current and the external load 100, respectively, as shown in fig. 4, where L represents the live end connected to the alternating current, N represents the neutral end connected to the alternating current, and N' represents the other end connected to the external load 100.
Further, the rectifier bridge BD1 is a rectifier chip for rectifying ac power into dc power, and supports full-voltage full-band input. In specific implementation, the specific model of the rectifier bridge BD1 may be MB 6S. The LC-pi filter circuit is used for filtering shaped direct current, and specifically comprises a first capacitor C2, a second capacitor C3 and a first inductor L1, wherein the positive output terminal of the rectifier bridge BD1 is respectively connected with one end of the first capacitor C2 and one end of the first inductor L1, the other end of the first inductor L1 is connected with one end of the second capacitor C3, and the negative output terminal of the rectifier bridge BD1 is grounded with the other end of the first capacitor C2 and the other end of the second capacitor C3; the LC-pi type filter circuit is used for removing unnecessary high-frequency and high-order harmonics, reducing current pulsation in a direct-current power supply and enabling current to be smoother. One end of the first inductor L1 connected to the second capacitor C3 is an output end of the rectifying unit 21, and since the dc power rectified by the rectifying unit 21 is a high-voltage dc power, it cannot be directly supplied to the communication module 30, the control module 40, and the driving module 50, and therefore the dc power thereof needs to be stepped down and stabilized.
Further, in an embodiment of the present invention, the BUCK unit 22 is a BUCK (BUCK) converter, which includes a power driving chip U1, a third capacitor C4, a second inductor L2, a fourth capacitor C5, a third resistor R3, a first diode D1, a second diode D2, a fourth resistor R4, a fifth resistor R5, and a fifth capacitor C6, wherein the power driving chip U1 is a non-isolated switching power chip for stepping down the high voltage dc to the low voltage dc, and when the implementation is implemented, the specific model of the power driving chip U1 may be GMC8306 DG. Wherein, the drain terminal D of the power driving chip U1 is connected to the output terminal of the rectifying unit 21, i.e. to one end of the first inductor L1 and the second capacitor C3, the power terminal VDD of the power driving chip U1 is connected to one end of the third capacitor C4, the source terminal S of the power driving chip U1 is connected to the other end of the third capacitor C4, one end of the second inductor L2, the negative terminal of the first diode D1, one end of the fifth capacitor C6, and one end of the fifth resistor R5, the other end of the second inductor L2 is connected to one end of the fourth capacitor C5, one end of the third resistor R3, and the positive terminal of the second diode D2, the other end of the fourth capacitor C5 is connected to the other end of the third resistor R3, and the positive terminal of the first diode D1 are connected to ground, the negative terminal of the second triode is connected to one end of the fourth resistor R4 and the other end of the fifth capacitor C6, the other end of the fourth resistor R6342 and the other end of the fifth resistor FB 28 are, the second inductor L2 and the fourth capacitor C5 are used for filtering, and the second diode D2, the fourth resistor R4 and the fifth resistor R5 form a feedback circuit, so that the power driving chip U1 stably outputs direct current of the first voltage. One end of the second inductor L2 connected to the second diode D2 is an output end of the voltage-reducing unit 22, which stably outputs the first voltage, and in the specific implementation, the voltage-reducing unit 22 stably outputs the 5V power. Since the step-down unit 22 steps down the high-voltage dc power to a dc power of a first voltage, however, since the communication module 30, the control module 40 and the driving module 50 require different power supplies, it additionally stabilizes the dc power of the first voltage to a second voltage so that it provides a normal power supply to the module requiring power supply.
Further, in an embodiment of the present invention, the voltage regulation unit 23 includes an LDO voltage regulator U2, a sixth capacitor C7, a sixth resistor R6, a seventh capacitor C8, and an eighth capacitor C9. The voltage regulation unit 23 is specifically an LDO regulator U2 (lowvoltage regulator) for regulating the first voltage to the second voltage, and in this embodiment, the voltage regulation unit 23 is specifically configured to stably convert the input 5V power to 3.3V output. In specific implementation, the LDO regulator U2 may be HT 7133. An input end Vin of the LDO regulator U2 is connected to an output end of the voltage step-down unit 22, that is, one end of the LDO regulator U2 connected to the second inductor L2 and the second diode D2 is connected to the ground, a ground end GND of the LDO regulator U2 is grounded, an output end Vout of the LDO regulator U2 is connected to one end of a sixth capacitor C7 and one end of a sixth resistor R6, the other end of the sixth capacitor C7 is grounded, the other end of the sixth resistor R6 is connected to one end of a seventh capacitor C8 and one end of an eighth capacitor C9, the other end of the seventh capacitor C8 and the other end of the eighth capacitor C9 are grounded, specifically, a resistance of the sixth resistor R6 is 0, and a connection end of the sixth resistor R6, the seventh capacitor C8 and the eighth capacitor C9 is an output end of the. The sixth capacitor C7, the sixth resistor R6, the seventh capacitor C8 and the eighth capacitor C9 are used for filtering.
Further, in an embodiment of the present invention, the output end of the voltage reducing unit 22 is connected to the second end of the coil of the normally closed relay 51 for providing a working 5V power supply for the normally closed relay 51, and the output end of the voltage stabilizing unit 23 is connected to the communication module 30 and the control module 40 for providing a working 5V power supply for the communication module 30 and the control module 40. It is understood that, when the power supply voltages required by the communication module 30, the control module 40, and the driving module 50 are other, the power supply module 20 may be set to other voltage outputs, which are set according to actual use requirements, and are not limited herein.
The relay generally includes an iron core, a coil, an armature, a contact spring, and the like. When a certain voltage is applied to the two ends of the coil, a certain current flows in the coil, so that an electromagnetic effect is generated, the armature iron overcomes the pulling force of the return spring and is attracted to the iron core under the attraction effect of the electromagnetic force, and the movable contact and the fixed contact of the armature iron are driven to be far away. When the coil is powered off, the electromagnetic attraction force disappears, and the armature returns to the original position under the counterforce of the spring, so that the movable contact and the original fixed contact are attracted. Thus, the circuit is attracted and released, thereby achieving the purposes of conduction and cut-off in the circuit. In the present embodiment, the normally closed relay 51 is in a normally closed conducting state in a normal state.
It should be noted that, in this embodiment, the driving module 50 preferably adopts the normally closed relay 51, but in other embodiments of the present invention, the relay included in the driving module 50 may also be a normally open relay, and at this time, the control module 40 has a power-off memory function, that is, when the external load is in the working state before power-off, that is, the normally open relay is in the closed state. After the power failure of the external load 100 is stopped by the power failure or the user disconnecting the control switch 200, the normally open relay is in the off state, when the power supply is recovered, the control module 40 records the working state information before the power failure, and correspondingly sends a control signal to the normally open relay, so that the driving module 50 immediately drives the normally open relay to be closed at the working time, and the external load 100 can be quickly controlled to work.
Therefore, when the switch control device 10 applying the switch control circuit is connected to the ac and external load 100, when the ac is in the on state, that is, the external control switch 200 is in the off state or directly electrically connected to the ac, the ac directly flows through the normally closed relay 51, so as to drive the external load 100 to operate, and the ac is shaped and regulated to the 5V and 3.3V working voltages by the power module 20 and respectively provided to the driving module 50, the communication module 30, and the control module 40, at this time, the communication module 30 and the control module 40 start to operate normally after receiving the power supply, at this time, when the user needs to perform the switch control on the external load 100, the user can use the control switch 200 directly disconnected from the external load as described in the above embodiments, or perform the wireless control through the external device, when the user wirelessly controls the external load 100 to stop operating through the external device, the communication module 30 forwards the received wireless communication signal to the control module 40, and the control module 40 outputs a control signal to the driving module 50 according to the wireless communication signal, specifically, the control module outputs a high-level control signal, and when the driving module 50 obtains the high level, the driving module drives the first triode Q1 to be turned on, so that the coil of the normally closed relay 51 is turned on, and at this time, an electromagnetic force is generated, and attracts the armature to turn off the normally closed relay 51, so that the connection between the alternating current and the external load 100 is disconnected, and the external load 100 stops working. Correspondingly, when a user needs to control the operation of the external load 100, the user performs the switching control through the external device according to the above description, at this time, the control module 40 outputs a low-level control signal to the driving module 50, and at this time, the first transistor Q1 is turned off, wherein, at the moment of the turning-off operation of the first transistor Q1, the freewheeling diode thereof performs the discharging freewheeling on the coil, which avoids the problem of possible damage to the normally-closed relay 51 caused by the sudden turning-off of the first transistor Q1.
In this embodiment, the driving module 50 includes a normally closed relay 51, so that when the ac power is connected, it can be directly connected to the external load 100 to work, so that the normal operation of the existing control switch 200 can be compatible, without changing the use habit of the user; meanwhile, due to the arrangement of the switch control circuit, the external load 100 is controlled in a wireless control mode without rewiring, the labor cost and the material cost of installation are reduced, the convenience and the flexibility of light control are improved, and the novel LED lamp is convenient to install and high in universality.
EXAMPLE III
Please refer to fig. 5, which is a schematic circuit diagram illustrating a connection between a communication module 30 and a control module 40 in a switch control circuit according to a third embodiment of the present invention, the third embodiment has a structure substantially the same as that of the second embodiment, and the difference is that in this embodiment, the communication module 30 is specifically an RF module a1, and in the specific implementation, the RF module a1 specifically adopts an a7129 wireless RF transceiver chip. Specifically, fig. 6 is a circuit diagram of the entire switch control circuit.
An ANT pin of the RF module a1 is connected to one end of a ninth capacitor C10 and one end of a seventh resistor R7, the other end of the ninth capacitor C10 is grounded, and the other end of the seventh resistor R7 is connected to a transceiver antenna ANT1, where the ninth capacitor C10 and the seventh resistor R7 form an antenna matching circuit, and the transceiver antenna ANT1 is configured to receive a radio frequency signal transmitted by an external device and transmit the radio frequency signal to the RF module a 1.
Further, the REG pin of the RF module a1 is connected to the voltage regulator unit 23 and one end of the tenth capacitor C11, wherein the other end of the tenth capacitor C11 is grounded. The GIO1 pin, the SDIO pin, the SCK pin and the SCS pin of the RF module A1 are sequentially connected with the PB0/INT0/AN0XT1 pin, the PA4/TCK1/AN3 pin, the PA5/AN4/VREF pin and the PA6/TCK2/AN5 pin of the control module 40 through buses, so that data transmission between the RF module A1 and the control module 40 is realized.
The PB1/INT1/AN0XT2 pin of the control module 40 is connected to one end of a switch key K1, one end of AN eleventh capacitor C12 and one end of a twelfth capacitor C13, the other end of the eleventh capacitor C12 is connected to the voltage stabilizing unit 23, the other end of the switch key K1 and the other end of the twelfth capacitor C13 are grounded, and the eleventh capacitor C12 and the twelfth capacitor C13 form a key jitter removing circuit for removing key jitter interference. At this time, the user can realize wireless control through the external device, and can control through the switch key K1, when the user presses the switch key K1, the control module 40 acquires the pressing signal of the switch key K1, and then correspondingly outputs a control signal to control the operating state of the driving module 50.
Furthermore, the pin PA7/TP1/AN6 of the control module 40 is connected to one end of AN eighth resistor R8, the other end of the eighth resistor R8 is connected to the cathode of the LED1, and the anode of the LED1 is connected to the voltage stabilizing unit 23, wherein the eighth resistor R8 and the LED1 form a display circuit for performing corresponding display according to the control of the control module 40, for example, displaying whether the communication module 30 is wirelessly connected to AN external device, and when the communication module 30 is wirelessly connected to the external device or a gateway, the control module 40 controls the LED1 to perform corresponding light-emitting display.
Further, the PB2/TCK0/AN2 pin of the control module 40 is connected to the driving module 50, and is used for outputting a control signal to the driving module 50 to control the operating state of the driving module 50.
Further, the PA0/TP0/ICPDA/OCDSDA pin of the control module 40 is connected with the ICPDA pin of the single chip with ISP function, and the PA3/TP2/AN7 pin of the control module 40 is connected with the ICPCK pin of the single chip with ISP function.
When the alternating current is in a conducting state and normally works, when the transceiving antenna ANT1 receives a wireless communication signal sent by an external device, the transceiving antenna ANT1 sends the wireless communication signal to the communication module 30, the communication module 30 converts the wireless communication signal into corresponding control data and sends the control data to the control module 40, and the control module 40 correspondingly outputs the control signal to the driving module 50, so that the driving module 50 drives the external load 100.
Further, it should be noted that the communication module 30 needs to establish a wireless communication connection with an external device, specifically, in this embodiment, a user may press the switch key K1 connected with the control module 40 for multiple times, or press the control switch 200 used for controlling the external load 100 for multiple times, so that after the external load 100 is turned on and off for multiple times, the control module 40 controls the communication module 30 to send a connection networking request, so that the communication module 30 is connected with the external device or a gateway for networking, and in specific implementation, the number of pressing times may be three.
Example four
The fourth embodiment of the present invention further provides a switch control device 10, wherein the switch control device 10 includes the switch control circuit according to any one of the first to third embodiments.
Specifically, referring to fig. 7 and 8, a circuit topology diagram of the switch control device 10 during installation is shown, wherein fig. 7 and 8 differ in that the switch control device 10 is connected to the ac power through the control switch 200 in fig. 7, and the switch control device 10 is directly connected to the ac power in fig. 8. It should be noted that, a plurality of switch control modules 40, external loads 100 and/or control switches 200 may be connected to the alternating current, and in this embodiment, the number of the switch control modules is two, and it can be understood that in other embodiments of the present invention, the number of the switch control modules may be other, and the number of the switch control modules may be set according to actual use requirements, and is not limited herein.
At this time, in fig. 7, the user may directly use the control switch 200 to control the on/off state of the external load 100 without changing the original on/off manner; or after the control switch 200 is closed, the user can use an external device to control the switch control device 10 in a wireless manner to further realize the switch state control of the external load 100, so that the switch control device 10 is directly additionally arranged between the control switch 200 and the alternating current without newly carrying out switch installation wiring on the existing home decoration structure, and the dual switch control of the external load 100 is realized by using the control switch 200 or using the wireless manner.
At this time, in fig. 8, when a user performs new decoration, the user does not need to specially wire to install the control switch 200, and only needs to set the switch control device 10 between the external load 100 and the alternating current to realize the switch control of the external load 100 in a wireless manner, thereby reducing the labor cost and the material cost of installation, and improving the convenience and the flexibility of the control of the load lamp.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. A switch control circuit, the circuit comprising: the device comprises a power module, a communication module, a control module and a driving module;
the power supply module is respectively connected with the alternating current, the communication module, the control module and the driving module and is used for converting the alternating current into direct current so as to provide working power supply for the communication module, the control module and the driving module;
the communication module is respectively connected with the power supply module and the control module and is used for carrying out wireless communication with external equipment and sending the received wireless communication signal to the control module so that the control module correspondingly controls the working state of the driving module according to the wireless communication signal;
the control module is respectively connected with the power supply module, the communication module and the driving module and is used for correspondingly outputting a control signal to the driving module according to the wireless communication signal sent by the communication module so as to control the working state of the driving module;
the driving module is respectively connected with the alternating current, the power supply module, the control module and an external load and is used for driving the external load connected with the driving module to work when the alternating current is communicated or driving the working state of the external load correspondingly according to a control signal output by the control module.
2. The switch control circuit of claim 1, wherein the drive module comprises:
the normally closed relay is connected with the alternating current, the power supply module and the external load and is used for controlling the on-off state of the external load connected with the power supply module when the alternating current is communicated;
and the driving unit is connected with the normally closed relay and the control module and is used for correspondingly driving the normally closed relay to be switched on and off according to the control signal output by the control module.
3. The switch control circuit of claim 2, wherein the drive module further comprises:
the follow current unit is connected between the power supply module and the driving unit and used for discharging the normally closed relay when the driving unit is disconnected;
and the filtering unit is connected with the normally closed relay, the power supply module and the follow current unit and used for filtering.
4. The switch control circuit according to claim 2, wherein two ends of a contact of the normally closed relay are respectively connected with the alternating current and the external load, two ends of a coil of the normally closed relay are respectively connected with the power module and the driving unit, the driving unit comprises a first triode, a first resistor and a second resistor, the first resistor and the second resistor are connected with the first triode, a collector of the first triode is connected with a first end of the coil of the normally closed relay, an emitter of the first triode is connected with one end of the first resistor and the ground, a base of the first triode is connected with the other end of the first resistor and one end of the second resistor, and the other end of the second resistor is connected with the control module.
5. The switch control circuit according to claim 3, wherein the freewheeling unit is a freewheeling diode, the filtering unit is a filtering capacitor, an anode of the freewheeling diode is connected to the first end of the coil of the normally-closed relay and the driving unit, a cathode of the freewheeling diode is connected to the second end of the coil of the normally-closed relay and the power module, and one end of the filtering capacitor is connected to the power module while the other end of the filtering capacitor is grounded.
6. The switch control circuit of claim 1, wherein the power module comprises:
a rectifying unit electrically connected to the alternating current for rectifying the alternating current into direct current;
a voltage reducing unit connected to the rectifying unit and reducing the rectified DC to a first voltage;
and the voltage stabilizing unit is connected with the voltage reducing unit and used for stabilizing the first voltage to the second voltage.
7. The switch control circuit of claim 6, wherein the rectification unit comprises:
the rectifier bridge is connected with the alternating current and used for shaping the alternating current into direct current;
and the filter circuit is connected with the output end of the rectifier bridge and is used for filtering the shaped direct current.
8. The switch control circuit of claim 1, wherein the communication module is any one or more of a WIFI module, a bluetooth module, a ZIGBEE module, an NB-IOT module, and an RF radio frequency module.
9. A switching control device, characterized in that the device comprises a switching control circuit according to any of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921650395.4U CN210958906U (en) | 2019-09-29 | 2019-09-29 | Switch control circuit and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921650395.4U CN210958906U (en) | 2019-09-29 | 2019-09-29 | Switch control circuit and device |
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| CN210958906U true CN210958906U (en) | 2020-07-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112039513A (en) * | 2020-09-11 | 2020-12-04 | 金枫林电器（无锡）有限公司 | Safety isolation circuit of key switch |
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2019
- 2019-09-29 CN CN201921650395.4U patent/CN210958906U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112039513A (en) * | 2020-09-11 | 2020-12-04 | 金枫林电器（无锡）有限公司 | Safety isolation circuit of key switch |
| CN112039513B (en) * | 2020-09-11 | 2023-12-05 | 金枫林电器（无锡）有限公司 | Safety isolation circuit of key switch |
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