A dual control circuit of intelligent switch and mechanical switch

Abstract

The present invention relates to a dual-control circuit of an intelligent switch and a mechanical switch, which includes a mechanical switch, an intelligent switch and a controlled device. The intelligent switch includes a switch actuator, the switch actuator includes an electromagnetic coil and a switch, the switch includes a first common connection terminal, a normally open connection contact and a normally closed connection contact, the main control unit is connected to the electromagnetic coil, the first common connection terminal is closed with the normally open connection contact or the normally closed connection contact, the mechanical switch includes a second common connection terminal, a normally open contact and a normally closed contact, the second common connection terminal is closed with the normally open contact or the normally closed contact, the dual-control circuit of the cooperative control of the intelligent switch and the traditional mechanical switch provided by the present invention can realize the cooperative control of the controlled device by the traditional switch and the intelligent switch, so that, on the original basis, only one of the switches needs to be replaced to achieve the following purpose: the present invention not only retains the control of the controlled device by multiple switches, but also upgrades the device controlled by the switch to intelligent control.

Description

Technical Field

[0001] The present invention relates to the technical field of dual-control switch circuits, and in particular to a dual-control circuit of an intelligent switch and a mechanical switch. Background Art

[0002] With the "single live wire" power supply technology, the single live wire smart switch can replace the traditional mechanical switch on the basis of the original line and upgrade the device control switch to "intelligent". The smart switch can be controlled by voice, mobile phone APP, and has scene setting and other functions, giving people a better user experience. In daily life, it is common to control the same controlled device (lamp) through two traditional switches. For example, in a room, switches are generally set at the door and the bedside to control the room's lamps for easy use. Under this condition, if users want to upgrade traditional switches to smart switches, they need to replace the two traditional switches that control the same controlled device (lamp) at the same time (in the example of the room, the switches at the bedside and the door need to be replaced).

[0003] At present, in the case where two traditional mechanical double-control switches control a lamp load together, after one of the traditional mechanical double-control switches is replaced with a smart switch, the other traditional mechanical double-control switch will become unusable and will no longer have the dual-control function. It is necessary to purchase a wireless switch (such as a wall-mounted switch) to replace the other traditional mechanical double-control switch to achieve the dual-control function, which increases the cost of home intelligent transformation and is not conducive to the promotion and popularization of smart switches.

[0004] In the existing solution, when two switches control the same lamp, if the traditional switch needs to be upgraded to a smart switch control, the two switches need to be replaced with smart switches or replaced with remote control devices that support communication with the smart switches to complete the overall upgrade. Summary of the invention

[0005] The first inventive object of the present invention is to provide a dual control circuit of the intelligent switch and the mechanical switch for synergistic control of intelligent control equipment.

[0006] The first object of the present invention is achieved by:

[0007] A dual-control circuit of an intelligent switch and a mechanical switch, comprising an intelligent switch, a mechanical switch, a controlled device, a first wire, a second wire, and a current detection subcircuit for detecting the working state of the controlled device, wherein the intelligent switch, the mechanical switch, and the controlled device are sequentially connected in series, the intelligent switch comprises a main control unit, a wireless signal processing unit, and a switch actuator, the switch actuator comprises an electromagnetic coil and a switch, the switch comprises a first common connection terminal, a normally open connection contact, and a normally closed connection contact, the main control unit is electrically connected to the electromagnetic coil, the first common connection terminal can be selectively connected to the normally open The connecting contact or the normally closed connecting contact is closed, the main control unit supplies power to the electromagnetic coil, the electromagnetic coil drives the first common connection terminal to close the normally open connecting contact or the normally closed connecting contact, the mechanical switch includes a second common connection terminal, a normally open contact and a normally closed contact, the second common connection terminal can be selectively closed with the normally open contact or the normally closed contact, the normally open contact is electrically connected to the normally open connecting contact, the normally closed contact is electrically connected to the normally closed connecting contact, the first common connection terminal is connected to the live wire in the AC power, the second common connection terminal is connected to the controlled device, and the controlled device is connected to the neutral wire in the AC power. When the dual-control circuit of the present invention is working, the main circuit provides current input, the main control unit sends a control signal (positive voltage) to the electromagnetic coil, the electromagnetic coil generates magnetic force, and the electromagnetic coil controls the first common connection end to close the normally open connection contact. On the contrary, when the main control unit sends a control signal (negative voltage) to the electromagnetic coil, the electromagnetic coil controls the first common connection end to disconnect the normally open connection contact, while the first common connection end to close the normally closed connection contact; similarly, the mechanical switch is manually pressed, and the second common connection end can be selectively closed with the normally open contact or the normally closed contact, thereby realizing the dual-end control function of the controlled device.

[0008] The present invention can also be further improved as follows.

[0009] The device also includes a field effect tube voltage conversion subcircuit and a current detection subcircuit for detecting the working state of the controlled device. The field effect tube voltage conversion subcircuit includes a first resistor, a second resistor, a third resistor, a first field effect tube, and a second field effect tube. The current detection subcircuit includes a current detection terminal, a fourth resistor, a first capacitor, a second capacitor, a photocoupler, a TVS diode, and a current detection terminal. The gate of the first field effect tube is connected to one end of the first resistor, the gate of the first field effect tube is connected to one end of the second resistor, the other end of the first resistor is connected in parallel with the other end of the second resistor, and the drain of the first field effect tube is connected to the drain of the first field effect tube. The first and second input ends of the photoelectric coupler are connected in parallel between the source of the second field effect tube and the first common connection end of the relay, the first output end of the photoelectric coupler is connected to the current detection end, the second output end of the photoelectric coupler is grounded, the second capacitor is connected in parallel between the first output end and the second output end of the photoelectric coupler, the current detection end is electrically connected to the main control unit, and the wireless signal processing unit is electrically connected to the main control unit.

[0010] When the current detection subcircuit detects whether there is current in the circuit, the main control unit learns the working status of the controlled device, and then sends a signal to the user's mobile terminal through the wireless signal processing unit, so that the user learns the working status of the controlled device and then performs the next step of control.

[0011] The switch actuator is a relay.

[0012] The controlled device is a lamp.

[0013] The photocoupler is a bipolar photocoupler.

[0014] The normally open connection contacts are connected to the normally open contacts via a first wire, and the normally closed connection contacts are connected to the normally closed contacts via a second wire.

[0015] The second invention object of the present invention is to provide a dual control circuit of the intelligent switch and the mechanical switch for synergistic control of the intelligent switch and the mechanical switch, which is convenient for upgrading the intelligent control equipment.

[0016] The second object of the present invention is achieved by:

[0017] A dual-control circuit of an intelligent switch and a mechanical switch, comprising an intelligent switch, a mechanical switch and a controlled device, wherein the mechanical switch, the intelligent switch and the controlled device are connected in series in sequence, the intelligent switch comprises a main control unit, a wireless signal processing unit and a switch actuator, the switch actuator comprises an electromagnetic coil and a switch, wherein the switch comprises a first common connection terminal, a normally open connection contact and a normally closed connection contact, the main control unit is electrically connected to the electromagnetic coil, the first common connection terminal can be selectively closed with the normally open connection contact or the normally closed connection contact, the mechanical switch comprises a second common connection terminal, a normally open contact and a normally closed contact, the second common connection terminal can be selectively closed with the normally open contact or the normally closed contact, the normally open contact is electrically connected to the normally open connection contact, the normally closed contact is electrically connected to the normally closed connection contact, the second common connection terminal is connected to the live wire in the mains, the first common connection terminal is connected to the controlled device, and the controlled device is connected to the neutral wire in the mains.

[0018] The beneficial effects of the present invention are as follows:

[0019] (I) The dual control circuit of the intelligent switch and the traditional mechanical switch provided by the present invention can realize the coordinated control of the controlled lamps by the traditional switch and the intelligent switch. The intelligent switch is compatible with the wiring method of the traditional switch and can be coordinated with the traditional switch to realize the control of the same controlled device. In this way, on the original basis, only one of the switches needs to be replaced to achieve the purpose of retaining the controlled device of multiple switches and upgrading the controlled device to intelligent control.

[0020] (ii) In addition, in the control circuit of two traditional mechanical double-control switches controlling one load together, after any one of the traditional mechanical double-control switches is upgraded and replaced with an intelligent switch, the other traditional mechanical double-control switch can still continue to be used normally without adding any parts, and no additional wiring is required between the intelligent switch and the traditional mechanical double-control switch, which reduces the difficulty and cost of transformation and is conducive to the promotion and popularization of intelligent switches.

[0021] (III) Moreover, the dual-control circuit solution provided by the present invention can not only realize the dual-end control function of a single controlled device by a set of switch actuators, but also retain the expansion space of dual-end control of multiple controlled devices by multiple sets of actuators, that is, dual-channel, three-channel and multi-channel devices can be realized on the basis of a single-channel device. Each of the channels can realize the way of replacing the traditional mechanical switch with an intelligent switch, so as to achieve the purpose of intelligent upgrade in the simplest, most convenient and lowest cost.

[0022] (iv) In addition, the present invention detects whether current is flowing in the circuit through the current detection subcircuit, so that the intelligent switch can know the working status of the controlled device, and then the intelligent switch sends the working status information of the controlled device to the user's mobile terminal, so that the user can view and control the controlled device conveniently, thereby achieving the purpose of intelligent control. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a simplified circuit diagram of the first embodiment of the dual control circuit of the intelligent switch and the mechanical switch of the present invention.

[0024] Figure 2 It is a circuit diagram of a dual control circuit of an intelligent switch and a mechanical switch of the present invention.

[0025] Figure 3 It is a simplified circuit diagram of the second embodiment of the dual control circuit of the intelligent switch and the mechanical switch of the present invention. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0027] Embodiment 1, as Figure 1 to Figure 2As shown, a dual control circuit of an intelligent switch and a mechanical switch includes a rectifier bridge voltage conversion subcircuit 15, a field effect tube voltage conversion subcircuit 16, a first wire 10, a second wire 11, an intelligent switch 1, a mechanical switch 2, a controlled device 3 and a current detection subcircuit for detecting the working state of the controlled device. The intelligent switch 1, the mechanical switch 2 and the controlled device 3 are connected in series in sequence. The field effect tube voltage conversion subcircuit 16 is electrically connected between the mains live wire and the intelligent switch 1. The input end of the rectifier bridge voltage conversion subcircuit 15 is connected to the live wire. The rectifier bridge voltage conversion subcircuit 15 is electrically connected between the mechanical switch and the intelligent switch 1. The intelligent switch 1 includes a main control unit 8, a wireless signal processing unit 9 and a switch actuator 6. The wireless signal processing unit 9 is used to receive wireless signals sent from a user mobile terminal and send wireless signals to The user mobile terminal, the switch actuator 6 includes an electromagnetic coil 5 and a switch 7, the switch includes a first common connection terminal COM1, a normally open connection contact NO and a normally closed connection contact NC, the main control unit 8 is electrically connected to the electromagnetic coil 5, the first common connection terminal COM1 can be selectively closed with the normally open connection contact NO or the normally closed connection contact NC, the mechanical switch 2 includes a second common connection terminal COM2, a normally open contact L1 and a normally closed contact L2, the second common connection terminal COM2 can be selectively closed with the normally open contact L1 or the normally closed contact L2, the normally open contact L1 is electrically connected to the normally open connection contact NO, the normally closed contact L2 is electrically connected to the normally closed connection contact NC, the first common connection terminal COM1 is connected to the live wire L in the mains, the second common connection terminal COM2 is connected to the controlled device, and the controlled device is connected to the neutral wire N in the mains.

[0028] As a more specific technical solution of the present invention.

[0029] The field effect tube voltage conversion subcircuit 16 includes a first resistor R2, a second resistor R3, a third resistor 18, a first field effect tube Q1 and a second field effect tube Q2, the current detection subcircuit includes a current detection terminal test1, a fourth resistor, a first capacitor C13, a second capacitor C14, a photocoupler U6, a TVS diode D10 and a current detection terminal test1, the gate of the first field effect tube Q1 is connected to one end of the first resistor R2, the gate of the first field effect tube Q1 is connected to one end of the second resistor R3, the other end of the first resistor R2 is connected in parallel with the other end of the second resistor R3, the drain of the first field effect tube Q1 is connected to the mains The live wire is connected, the drain of the second field effect tube Q2 is connected to the source of the first field effect tube Q1, the third resistor 18, the fourth resistor, the first capacitor C13, the TVS diode D10 and the first input end and the second input end of the photoelectric coupler U6 are connected in parallel between the source of the second field effect tube Q2 and the first common connection end COM1 of the relay, the first output end of the photoelectric coupler U6 is connected to the current detection end test1, the second output end of the photoelectric coupler U6 is grounded, the second capacitor C14 is connected in parallel between the first output end and the second output end of the photoelectric coupler U6, and the main control unit 8 is electrically connected to the current detection end test1.

[0030] The switch actuator 6 is a relay.

[0031] The photocoupler U6 is a bipolar photocoupler.

[0032] The controlled device 3 is a lamp.

[0033] The normally open connection contact NO is connected to the normally open contact L1 through a first wire 10, and the normally closed connection contact NC is connected to the normally closed contact L2 through a second wire 11. The two output ends of the rectifier bridge voltage conversion subcircuit 15 are connected to the first wire 10 and the second wire 11 respectively.

[0034] The working principle of the power taking of the present invention is:

[0035] The intelligent switch of the present invention is connected in series with the lamp via a single live wire to obtain power, thereby providing a stable power supply for the main control unit 8 and the wireless signal processing unit 9 inside the intelligent switch; there are two power supply situations of the present invention:

[0036] In the first case, when the lamp is on, Figure 2The signal FEG in is low level, the first field effect tube Q1 and the second field effect tube Q2 are cut off, the mains power is connected to the rectifier bridge voltage conversion sub-circuit 15 through the live wire, and the neutral wire is connected to the voltage conversion circuit from the traditional switch line through the lamp. After passing through the voltage conversion circuit, it is used by the main control unit 8 and the wireless signal processing unit 9 of the intelligent switch. The switch actuator 6 of the intelligent switch forms a normally open and normally closed path with the traditional switch. The voltage at the first input terminal of the photoelectric coupler is higher than the voltage at the second input terminal. Current passes through the photoelectric coupler, and the feedback level signal of the current detection terminal test1 is low level.

[0037] In the second case, when the lamp is off, Figure 2 The signal FEG in is high level, the first field effect tube Q1 and the second field effect tube Q2 are turned on, and the mains power flows into the energy storage unit (not shown in the figure) after passing through the live wire and the field effect tube voltage conversion sub-circuit for use by the main control unit 8 and the wireless signal processing unit 9 of the intelligent switch. At this time, the switch 7 of the switch actuator 6 is disconnected, the mains power has no loop, the photoelectric coupler U6 does not work, and the feedback level signal of the current detection terminal test1 is high level.

[0038] The working principle of the current detection subcircuit of the present invention for detecting the working state of the controlled device is:

[0039] When the mains L10V is disconnected, that is, when the light is turned off, the circuit is powered off. Figure 2 There is no current flowing between Relyon_in and Relyon1, the photocoupler does not work, and the current detection terminal test1 outputs the original pull-up level (high level).

[0040] When the mains power L10V is turned on, that is, when the light is on, the circuit is energized. Figure 2 There is current flowing between Relyon_in and Relyon1 in the circuit. In the positive half cycle of the alternating current, the current flows from Relyon_in to Relyon1; in the negative half cycle of the alternating current, the current flows from Relyon1 to Relyon_in. Regardless of the positive half cycle or the negative half cycle, the photocoupler can work normally. At this time, the first and second output terminals of the photocoupler U6 are equivalent to short circuits, and the voltage of the current detection terminal test1 is pulled down by the ground line, and the output is low level.

[0041] When the current detection subcircuit detects whether there is current in the circuit, the main control unit 8 obtains the working status of the controlled device, and then the main control unit 8 sends a signal to the user's mobile terminal through the wireless signal processing unit 9, so that the user obtains the working status of the controlled device and then performs the next step of control.

[0042] Embodiment 2, as Figure 3As shown, the implementation of the second embodiment is similar to that of the first embodiment, and the only difference is that the mechanical switch 2, the intelligent switch 1 and the controlled device 3 are connected in series in sequence, the second common connection terminal COM2 is connected to the live wire L in the mains, the first common connection terminal COM1 is connected to the controlled device 3, and the controlled device 3 is connected to the neutral wire L in the mains. The working principle of the second embodiment is similar to that of the first embodiment, and will not be described in detail here.

Claims

1. A dual control circuit of an intelligent switch and a mechanical switch, characterized in that: The invention comprises an intelligent switch, a mechanical switch and a controlled device, wherein the intelligent switch, the mechanical switch and the controlled device are connected in series in sequence, the intelligent switch comprises a main control unit, a wireless signal processing unit and a switch actuator, the switch actuator comprises an electromagnetic coil and a switch, the switch comprises a first common connection terminal, a normally open connection contact and a normally closed connection contact, the main control unit is electrically connected to the electromagnetic coil, the first common connection terminal is closed with the normally open connection contact or the normally closed connection contact, the mechanical switch comprises a second common connection terminal, a normally open contact and a normally closed contact, the second common connection terminal is closed with the normally open contact or the normally closed contact, the normally open contact is electrically connected with the normally open connection contact, the normally closed contact is electrically connected with the normally closed connection contact, the first common connection terminal is connected with the live wire in the mains, the second common connection terminal is connected with the controlled device, the controlled device is connected with the neutral wire in the mains, The switch actuator is a relay; The device also includes a field effect tube voltage conversion subcircuit and a current detection subcircuit for detecting the working state of the controlled device. The field effect tube voltage conversion subcircuit includes a first resistor, a second resistor, a third resistor, a first field effect tube, and a second field effect tube. The current detection subcircuit includes a current detection terminal, a fourth resistor, a first capacitor, a second capacitor, a photocoupler, a TVS diode, and a current detection terminal. The gate of the first field effect tube is connected to one end of the first resistor, the gate of the first field effect tube is connected to one end of the second resistor, the other end of the first resistor is connected in parallel with the other end of the second resistor, and the drain of the first field effect tube is connected to the drain of the first field effect tube. The first and second input ends of the photoelectric coupler are connected in parallel between the source of the second field effect tube and the first common connection end of the relay, the first output end of the photoelectric coupler is connected to the current detection end, the second output end of the photoelectric coupler is grounded, the second capacitor is connected in parallel between the first output end and the second output end of the photoelectric coupler, the current detection end is electrically connected to the main control unit, and the wireless signal processing unit is electrically connected to the main control unit.

2. The dual control circuit of the intelligent switch and the mechanical switch according to claim 1 is characterized in that: The controlled device is a lamp.

3. The dual control circuit of the intelligent switch and the mechanical switch according to claim 1 is characterized in that: The photocoupler is a bipolar photocoupler.

4. The dual control circuit of the intelligent switch and the mechanical switch according to claim 1 is characterized in that: It also includes a first wire and a second wire, the normally open connection contact is connected to the normally open contact through the first wire, and the normally closed connection contact is connected to the normally closed contact through the second wire.

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