Lamp switch control device and intelligent switch

Abstract

The utility model discloses a lamp switch control device and an intelligent switch, the device is arranged in a switch seat, the device comprises a strong current plate and a weak current plate connected with the strong current plate, the strong current plate comprises a rectification circuit, a voltage conversion circuit and at least one switch driving circuit, and the weak current plate comprises a main control circuit; the rectification circuit is connected with the voltage conversion circuit, the voltage conversion circuit is respectively connected with the switch driving circuit and the main control circuit, and the main control circuit is in communication connection with an external mobile terminal or wireless equipment in a wireless mode and is used for receiving control signals input from the outside; and the switch driving circuit is respectively connected with the main control circuit and the lamp module, and is used for driving the lamp module to work according to the control signal output by the main control circuit. According to the utility model, the lamp switch can be remotely controlled to work, the switch operation mode is simple and convenient, the potential safety hazard of human body is low, the circuit structure is simple, and the stability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of lamp switches, and in particular to a lamp switch control device and an intelligent switch. Background Art

[0002] At present, lamp switches are generally set on indoor walls. When they need to be used, users need to reach the lamp switch and manually control the mechanical lamp switch to control the lighting of the lamp. However, the use of the above-mentioned mechanical lamp switch will cause inconvenience to users, especially at night or on cloudy days, and the human safety hazard is high. For example, after opening the door, users need to enter the room in the dark to find the lamp switch to turn on the light, or after getting up, they need to walk around in the dark to find the lamp switch to turn on the light, which may cause the user to collide or fall, causing personal injury. Therefore, there is an urgent need for an intelligently controlled lamp switch control device and an intelligent switch to solve the above technical problems. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a lamp switch control device and an intelligent switch with a simple circuit structure and high stability, which can realize remote control of the lamp switch operation, have a simple switch operation method, and have low human safety hazards.

[0004] In order to solve the above technical problems, the utility model provides a lamp switch control device, which is arranged in a switch seat, including a high-voltage board and a low-voltage board connected to the high-voltage board, the high-voltage board including a rectifier circuit, a voltage conversion circuit and at least one switch drive circuit, and the low-voltage board including a main control circuit; the rectifier circuit is connected to the voltage conversion circuit, and is used to convert the input AC mains into DC power and supply power to the voltage conversion circuit; the voltage conversion circuit is respectively connected to the switch drive circuit and the main control circuit, and is used to step down the DC power and convert it into a working voltage and supply power to the switch drive circuit and the main control circuit respectively; the main control circuit is wirelessly connected to an external mobile terminal or wireless device for communication, and is used to receive an external input control signal; the switch drive circuit is respectively connected to the main control circuit and the lamp module, and is used to drive the lamp module to work according to the control signal output by the main control circuit.

[0005] As an improvement of the above scheme, the main control circuit includes a RF main control chip and a RF matching circuit, and the control end of the RF main control chip is connected to the switch driving circuit one by one; the RF end of the RF main control chip is connected to the RF matching circuit, and is used to receive and send wireless signals through the RF matching circuit.

[0006] As an improvement of the above scheme, the RF matching circuit includes a first capacitor, a second capacitor, a third capacitor, a first resistor and an antenna component; the RF end of the RF main control chip is connected to one end of the antenna component via the first resistor and the first capacitor and is grounded via the second capacitor, the connection end between the first resistor and the first capacitor is grounded via the third capacitor, and the other end of the antenna component is grounded.

[0007] As an improvement of the above scheme, the switch driving circuit includes a first switch tube and a switch on-off module, the switch on-off module is respectively connected to the lamp module and the live wire end of the power supply, and is used to control the on-off state of the power supply circuit of the lamp module; the first end of the first switch tube is connected to the switch on-off module, the second end of the first switch tube is grounded, and the driving end of the first switch tube is connected to the control end of the RF main control chip, and is used to control the operation of the switch on-off module according to the control signal output by the RF main control chip.

[0008] As an improvement of the above scheme, the switch on-off module includes a relay module and a rectifier diode; one end of the coil of the relay module is respectively connected to the working voltage and the negative end of the rectifying diode, the other end of the coil of the relay module is respectively connected to the positive end of the rectifier diode and the first end of the first switch tube, the static contact of the relay module is connected to the live wire end of the power supply, and the moving contact of the relay module is connected to the lamp module.

[0009] As an improvement on the above scheme, the weak current board also includes a human-computer interaction key circuit, and the human-computer interaction key circuit includes at least one key switch, and the key switch is arranged in a one-to-one correspondence with the switch drive circuit; one end of the key switch is connected to the human-computer interaction control end of the RF main control chip, and the other end of the key switch is grounded.

[0010] As an improvement of the above scheme, the weak current board also includes an indicator light circuit, which includes a second switch tube, a second resistor, a third resistor and at least one indicator light; the first end of the second switch tube is connected to the negative end of the indicator light, the positive end of the indicator light is connected to the working voltage, the other end of the second switch tube is grounded, the control end of the second switch tube is connected to the RF main control chip via the second resistor, and the control end of the second switch tube is also grounded via the third resistor.

[0011] As an improvement of the above scheme, the rectifier circuit includes a fuse, a varistor, a rectifier bridge, a first inductor, a fourth resistor, a first electrolytic capacitor and a second electrolytic capacitor; the first AC input end of the rectifier bridge is connected to the live wire end of the power supply via the fuse, the second AC input end of the rectifier bridge is connected to the neutral wire end of the power supply and is connected to the first AC input end of the rectifier bridge via the varistor, the output end of the rectifier bridge is respectively connected to the voltage conversion circuit and the positive end of the second electrolytic capacitor via the first inductor and is grounded via the first electrolytic capacitor, and the grounding end of the rectifier bridge is grounded; the negative end of the second electrolytic capacitor is grounded, and the fourth resistor is respectively connected to the positive end of the first electrolytic capacitor and the positive end of the second electrolytic capacitor.

[0012] As an improvement of the above scheme, the voltage conversion circuit includes a step-down transformer module, a power management chip, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, a sampling module, a first diode, a fourth capacitor and a fifth capacitor. The step-down transformer module includes a first winding, a second winding and a third winding; the power management chip includes a power supply pin, a feedback pin, a sampling pin, a DRAIN pin and a ground pin; the power supply pin is connected to the output end of the rectifier circuit through the fifth resistor and the sixth resistor and is grounded through the fourth capacitor, the feedback pin is connected to the positive end of the first diode through the seventh resistor, the eighth resistor and the ninth resistor, the negative end of the first diode is connected to the power supply pin, the feedback pin is also grounded through the fifth capacitor and the tenth resistor respectively, and the connection end between the eighth resistor and the ninth resistor is grounded through the third winding; the sampling pin is grounded through the sampling module, the ground pin is grounded, and the DRAIN pin is respectively connected to one end of the first winding and the main control circuit; the other end of the first winding is connected to the output end of the rectifier circuit, one end of the second winding is connected to the switch drive circuit and the main control circuit, and the other end of the second winding is grounded.

[0013] The utility model also provides an intelligent switch, comprising a switch base and the above-mentioned lamp switch control device, wherein the lamp switch control device is arranged in the switch base, and a key switch component is arranged on the switch base.

[0014] The beneficial effects of implementing the utility model are:

[0015] The utility model discloses a circuit lamp switch control device and an intelligent switch, which can receive external input control signals wirelessly and control the lighting operation of the lamp module, so as to realize remote control of the lamp switch operation; the switch operation is simple, can reduce human safety hazards, improve the user experience, and the overall circuit structure is simple and has high stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the lamp switch control device of the utility model;

[0017] Figure 2 It is a circuit structure diagram of the connection socket of the strong current board and the weak current board of the utility model;

[0018] Figure 3 It is a circuit structure diagram of the main control circuit of the utility model;

[0019] Figure 4 It is a circuit structure diagram of the switch driving circuit of the utility model;

[0020] Figure 5 It is a circuit structure diagram of the human-machine interactive key circuit and indicator light circuit of the utility model;

[0021] Figure 6 It is a circuit structure diagram of the rectifier circuit and voltage conversion circuit of the utility model;

[0022] Figure 7 It is a structural schematic diagram of the intelligent switch of the utility model. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings.

[0024] like Figure 1 As shown, a specific embodiment of the utility model provides a lamp switch control device, which is arranged in a switch seat, including a strong current board 1 and a weak current board 2 connected to the strong current board 1, the strong current board 1 includes a rectifier circuit 11, a voltage conversion circuit 12 and at least one switch drive circuit 13, and the weak current board 2 includes a main control circuit 21;

[0025] The rectifier circuit 11 is connected to the voltage conversion circuit 12, and is used for converting the input AC mains power into DC power and supplying power to the voltage conversion circuit 12; the voltage conversion circuit 12 is respectively connected to the switch drive circuit 13 and the main control circuit 21, and is used for stepping down the DC power into a working voltage and supplying power to the switch drive circuit 13 and the main control circuit 21 respectively; the main control circuit 21 is connected to an external mobile terminal or wireless device via wireless communication, and is used for receiving an external input control signal; the switch drive circuit 13 is respectively connected to the main control circuit 21 and the lamp module, and is used for driving the lamp module to work according to the control signal output by the main control circuit 21.

[0026] When it is necessary to control the operation of the lamp module, the user can send a control signal to the main control circuit 21 through the APP in the mobile terminal, and the main control circuit 21 will control the operation of the corresponding switch drive circuit 13 immediately or regularly according to the control signal to control the operation of the corresponding lamp module; or connect with the wireless device in the smart home system, such as when the electronic door lock is opened, the smart home system can send a corresponding control signal to the main control circuit 21, so that the main control circuit 21 controls the operation of the corresponding lamp module, so that the user can turn on the light when entering the door, etc. The utility model receives the external input control signal wirelessly and controls the lighting operation of the lamp module, thereby realizing remote control of the lamp switch operation, without the need for the user to walk or walk to the lamp switch in the dark to perform manual control; the switch operation is simple, can reduce human safety hazards, and improve the user's experience, and the overall circuit structure is simple and stable, which can meet the actual needs of users.

[0027] like Figures 2 to 6 As shown, the following is a detailed description of the utility model in combination with the specific circuit diagram of the lamp switch control device of the utility model:

[0028] It should be noted that if Figure 2 As shown, a connection socket P1 is provided on the strong current board 1, and a connection socket J3 is provided on the weak current board 2. The strong current board 1 is connected to the connection socket J3 of the weak current board 2 through the connection socket P1, so as to realize the line connection between the strong current board 1 and the weak current board 2. By setting the strong current board 1 and the weak current board 2 to realize the separation of strong current and weak current, signal interference is avoided, circuit safety is guaranteed, and circuit working stability is improved.

[0029] like Figure 3 As shown, the main control circuit 21 includes a radio frequency main control chip U3 and a radio frequency matching circuit 221. The control terminals (such as RELAY1, RELAY2 and RELAY3) of the radio frequency main control chip U3 are connected to the switch driving circuit 13 in a one-to-one correspondence; the radio frequency terminal RF of the radio frequency main control chip U3 is connected to the radio frequency matching circuit 221, and is used to receive and send wireless signals through the radio frequency matching circuit 221. When the main control circuit 21 receives an external input control signal through the radio frequency matching circuit 221, the switch driving circuit 13 can be immediately or timed to drive the lamp module to work or not work according to the control signal to meet the actual use needs of the user.

[0030] Specifically, the RF matching circuit 221 includes a first capacitor C13, a second capacitor C15, a third capacitor C14, a first resistor R19 and an antenna component ANT1; the RF end of the RF main control chip U3 is connected to one end of the antenna component ANT1 via the first resistor R19 and the first capacitor C13 and is grounded via the second capacitor C15, the connection end between the first resistor R19 and the first capacitor C13 is grounded via the third capacitor C14, and the other end of the antenna component ANT1 is grounded. The set RF matching circuit 221 can realize wireless signal reception and transmission through the antenna component ANT1.

[0031] Preferably, the RF main control chip U3 is preferably BL0912, but is not limited thereto.

[0032] Preferably, the main control circuit 21 is also provided with an external crystal oscillator clock circuit 222, which is connected to the main control circuit 21 and is used to provide a stable clock signal to the RF main control chip U3, so that the RF main control chip U3 has a time reference to operate. Among them, the crystal oscillator clock circuit 222 is preferably a 32M crystal oscillator clock circuit, and its specific circuit structure can be seen in Figure 3 As shown, no further description is given here.

[0033] like Figure 4 As shown, this embodiment includes three switch driving circuits 13, and the switch driving circuit 13 includes a first switch tube (such as Q1, Q2 and Q3) and a switch on-off module 131. The switch on-off module 131 is respectively connected to the lamp module and the live wire terminal L of the power supply, and is used to control the on-off state of the power supply circuit of the lamp module; the first end of the first switch tube is connected to the switch on-off module 131, the second end of the first switch tube is grounded, and the driving end of the first switch tube is connected to the control end of the RF main control chip U3, and is used to control the operation of the switch on-off module 131 according to the control signal output by the RF main control chip U3.

[0034] Specifically, the switch on-off module 131 includes a relay module (such as K1, K2 and K3) and a rectifier diode (such as D4, D5 and D6); one end of the coil of the relay module is respectively connected to the working voltage and the negative end of the rectifying diode, and the other end of the coil of the relay module is respectively connected to the positive end of the rectifier diode and the first end of the first switch tube, the static contact of the relay module is connected to the live wire terminal L of the power supply, and the moving contact of the relay module is connected to the lamp module.

[0035] When the main control circuit 21 receives the control signal, the main control circuit 21 sends a corresponding control signal to control the first switch tube to turn on (or off) so that the coil of the relay module is powered on and works (or does not work). At this time, the moving contact and the static contact are closed and connected (disconnected), so that the power supply circuit of the lamp module is turned on (or off), and the lamp module works (or does not work) for lighting.

[0036] Preferably, the first switch tube is an NPN transistor, but not limited thereto.

[0037] like Figure 5 As shown, the weak current board 2 also includes a human-machine interaction key circuit 22, and the human-machine interaction key circuit 22 includes at least one key switch, and the key switch is set in a one-to-one correspondence with the switch drive circuit 13; one end of the key switch (such as S4, S5 and S6) is connected to the human-machine interaction control end (such as KEY1, KEY2 and KEY3) of the RF main control chip U3 in a one-to-one correspondence, and the other end of the key switch is grounded.

[0038] The human-machine interaction key circuit 22 is provided so that the user can manually control the key switch, so that the main control circuit 21 controls the corresponding light-opening drive circuit to drive the corresponding lamp module to work, thereby realizing manual control of the lamp switch. By providing multiple control modes for users to use, the user experience is improved.

[0039] like Figure 5 As shown, the weak current board 2 also includes an indicator light circuit 23, and the indicator light circuit 23 includes a second switch tube Q4, a second resistor R23, a third resistor R24 ​​and at least one indicator light; the first end of the second switch tube Q4 is connected to the negative end of the indicator light, and the positive ends of the indicator lights (such as LED1, LED2 and LED3) are connected to the working voltage via current limiting resistors (such as R20, R21 and R22), the other end of the second switch tube Q4 is grounded, and the control end of the second switch tube Q4 is connected to the RF main control chip U3 via the second resistor R23, and the control end of the second switch tube Q4 is also grounded via the third resistor R24.

[0040] When the user manually presses the button switch, the main control circuit 21 controls the switch driving circuit 13 to drive the lamp module to work. At the same time, the main control circuit 21 also outputs a control signal to control the second switch tube Q4 to turn on, so that the power supply circuit of the indicator light is turned on, and the indicator light works to play a working indication function, thereby informing the user that the operation is successful and the lamp module has been controlled to turn on.

[0041] Preferably, the second switch tube Q4 is preferably an NPN transistor, but not limited thereto.

[0042] like Figure 6As shown, the rectifier circuit 11 includes a fuse RF1, a varistor RV1, a rectifier bridge DB1, a first inductor L1, a fourth resistor R1, a first electrolytic capacitor CE1 and a first electrolytic capacitor CE2;

[0043] The first AC input end of the rectifier bridge DB1 is connected to the live wire terminal L of the power supply via the fuse RF1, the second AC input end of the rectifier bridge DB1 is connected to the neutral wire terminal N of the power supply and is connected to the first AC input end of the rectifier bridge DB1 via the varistor RV1, the output end of the rectifier bridge DB1 is respectively connected to the voltage conversion circuit 12 and the positive terminal of the first electrolytic capacitor CE2 via the first inductor L1 and is grounded via the first electrolytic capacitor CE1, and the grounding end of the rectifier bridge DB1 is grounded; the negative terminal of the first electrolytic capacitor CE2 is grounded, and the fourth resistor R1 is respectively connected to the positive terminal of the first electrolytic capacitor CE1 and the positive terminal of the first electrolytic capacitor CE2.

[0044] The input AC mains is converted into DC through the rectifier bridge DB1 to obtain the required DC power. The fuse RF1 and the varistor RV1 are provided to protect the circuit, ensure the circuit safety and improve the circuit working stability. The first electrolytic capacitor CE1 and the first electrolytic capacitor CE2 are provided to filter noise and clutter, so that the output DC power is noise-free and applied to the back-end circuit, thereby increasing the working life of the circuit.

[0045] like Figure 6 As shown, the voltage conversion circuit 12 includes a step-down transformer module, a power management chip U2, a fifth resistor R3, a sixth resistor R2, a seventh resistor R6, an eighth resistor R5, a ninth resistor R4, a tenth resistor R26, an eleventh resistor R8, a twelfth resistor R9, a thirteenth resistor R10, a sampling module, a first diode D1, a second diode D2, a third diode D3, a fourth capacitor C2, a fifth capacitor C3, a sixth capacitor C4, a seventh capacitor C5 and a third electrolytic capacitor CE3, the step-down transformer module includes a first winding T1A, a second winding T1B and a third winding T1C; the power management chip U2 includes a power supply pin VDD, a feedback pin FB, a sampling pin CS, a DRAIN pin and a ground pin GND. Among them, the sampling module includes a first sampling resistor RS15 and a second sampling resistor RS25.

[0046] The power supply pin VDD is connected to the output end of the rectifier circuit 11 through the fifth resistor R3 and the sixth resistor R2 and is grounded through the fourth capacitor C2. The feedback pin FB is connected to the positive end of the first diode D1 through the seventh resistor R6, the eighth resistor R5 and the ninth resistor R4. The negative end of the first diode D1 is connected to the power supply pin VDD. The feedback pin FB is also grounded through the fifth capacitor C3 and the tenth resistor R26 respectively. The connection end between the eighth resistor R5 and the ninth resistor R4 is grounded through the third winding T1C; the sampling pin CS is grounded through the sampling module, the ground pin GND is grounded, and the DRAIN pin is connected to one end of the first winding T1A and the main control circuit 21 respectively;

[0047] One end of the first winding T1A is also connected to the positive terminal of the second diode D2 via the eleventh resistor R8, the other end of the first winding T1A is connected to the output end of the rectifier circuit 11 and is respectively connected to the negative terminal of the second diode D2 via the twelfth resistor R9 and the sixth capacitor C4, one end of the second winding T1B is connected to the positive terminal of the third diode D3, the other end of the second winding T1B is grounded, the negative terminal of the third diode D3 is respectively grounded via the third electrolytic capacitor CE3, the seventh capacitor C5 and the thirteenth resistor R10, and the negative terminal of the third diode D3 is also connected to the switch drive circuit 13, the main control circuit 21 and the indicator light circuit 23 to adapt power supply to the switch drive circuit 13, the main control circuit 21 and the indicator light circuit 23.

[0048] The step-down transformer module is used to step down the input DC power and convert it into a 3.3V working voltage to adapt the power supply for the subsequent circuit. The power management chip U2 provided can provide a high-precision constant voltage output and play an overvoltage protection role, thereby improving the stability of the power supply circuit. Among them, the power management chip U2 is preferably KP212X, but this is not a limitation.

[0049] like Figure 7 As shown, the utility model further provides an intelligent switch, including a switch base 3 and the above-mentioned lamp switch control device, wherein the lamp switch control device is arranged in the switch base 3, and a key switch component 31 is arranged on the switch base 3, and the key switch component 31 is adapted to be connected with the key switch. Since the above-mentioned lamp switch control device has the above-mentioned technical effects, the intelligent switch including the above-mentioned lamp switch control device should also have the above-mentioned technical effects, which will not be described in detail here.

[0050] The above is a preferred embodiment of the present utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications are also considered to be within the protection scope of the present utility model.

Claims

1. A lamp switch control device, which is arranged in a switch seat, characterized in that: It includes a strong current board and a weak current board connected to the strong current board, wherein the strong current board includes a rectifier circuit, a voltage conversion circuit and at least one switch drive circuit, and the weak current board includes a main control circuit; The rectifier circuit is connected to the voltage conversion circuit and is used to convert the input AC mains power into DC power and supply power to the voltage conversion circuit; The voltage conversion circuit is connected to the switch drive circuit and the main control circuit respectively, and is used to convert the DC power into a working voltage and supply power to the switch drive circuit and the main control circuit respectively; The main control circuit is connected to an external mobile terminal or wireless device in a wireless communication manner to receive an external input control signal; The switch driving circuit is connected to the main control circuit and the lamp module respectively, and is used to drive the lamp module to work according to the control signal output by the main control circuit.

2. The lamp switch control device according to claim 1, characterized in that: The main control circuit includes a radio frequency main control chip and a radio frequency matching circuit, and the control end of the radio frequency main control chip is connected to the switch driving circuit in a one-to-one correspondence; The RF end of the RF main control chip is connected to the RF matching circuit, and is used to receive and send wireless signals through the RF matching circuit.

3. The lamp switch control device according to claim 2, characterized in that: The radio frequency matching circuit includes a first capacitor, a second capacitor, a third capacitor, a first resistor and an antenna component; The RF end of the RF main control chip is connected to one end of the antenna component via a first resistor and a first capacitor and is grounded via the second capacitor. The connection end between the first resistor and the first capacitor is grounded via the third capacitor, and the other end of the antenna component is grounded.

4. The lamp switch control device according to claim 2, characterized in that: The switch driving circuit includes a first switch tube and a switch on-off module, wherein the switch on-off module is connected to the lamp module and the live wire end of the power supply respectively, and is used to control the on-off state of the power supply circuit of the lamp module; The first end of the first switch tube is connected to the switch on-off module, the second end of the first switch tube is grounded, and the driving end of the first switch tube is connected to the control end of the RF main control chip, and is used to control the operation of the switch on-off module according to the control signal output by the RF main control chip.

5. The lamp switch control device according to claim 4, characterized in that: The switch on-off module includes a relay module and a rectifier diode; One end of the coil of the relay module is respectively connected to the working voltage and the negative end of the rectifying diode, the other end of the coil of the relay module is respectively connected to the positive end of the rectifier diode and the first end of the first switch tube, the static contact of the relay module is connected to the live wire end of the power supply, and the moving contact of the relay module is connected to the lamp module.

6. The lamp switch control device according to claim 2, characterized in that: The weak current board also includes a human-machine interaction key circuit, and the human-machine interaction key circuit includes at least one key switch, and the key switch is arranged in a one-to-one correspondence with the switch drive circuit; One end of the key switch is connected to the human-machine interaction control end of the radio frequency main control chip, and the other end of the key switch is grounded.

7. The lamp switch control device according to claim 2 or 6, characterized in that: The weak current board also includes an indicator light circuit, which includes a second switch tube, a second resistor, a third resistor and at least one indicator light; The first end of the second switch tube is connected to the negative end of the indicator light, the positive end of the indicator light is connected to the working voltage, the other end of the second switch tube is grounded, the control end of the second switch tube is connected to the RF main control chip via the second resistor, and the control end of the second switch tube is also grounded via a third resistor.

8. The lamp switch control device according to claim 1, characterized in that: The rectifier circuit includes a fuse, a varistor, a rectifier bridge, a first inductor, a fourth resistor, a first electrolytic capacitor and a second electrolytic capacitor; The first AC input end of the rectifier bridge is connected to the live wire end of the power supply via the fuse, the second AC input end of the rectifier bridge is connected to the neutral wire end of the power supply and connected to the first AC input end of the rectifier bridge via the varistor, the output end of the rectifier bridge is respectively connected to the voltage conversion circuit and the positive terminal of the second electrolytic capacitor via the first inductor and is grounded via the first electrolytic capacitor, and the grounding end of the rectifier bridge is grounded; The negative terminal of the second electrolytic capacitor is grounded, and the fourth resistor is connected to the positive terminal of the first electrolytic capacitor and the positive terminal of the second electrolytic capacitor respectively.

9. The lamp switch control device according to claim 1, characterized in that: The voltage conversion circuit includes a step-down transformer module, a power management chip, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, a sampling module, a first diode, a fourth capacitor and a fifth capacitor, and the step-down transformer module includes a first winding, a second winding and a third winding; The power management chip includes a power supply pin, a feedback pin, a sampling pin, a DRAIN pin and a ground pin; The power supply pin is connected to the output end of the rectifier circuit via the fifth resistor and the sixth resistor and is grounded via the fourth capacitor, the feedback pin is connected to the positive terminal of the first diode via the seventh resistor, the eighth resistor and the ninth resistor, the negative terminal of the first diode is connected to the power supply pin, the feedback pin is also grounded via the fifth capacitor and the tenth resistor respectively, and the connection end between the eighth resistor and the ninth resistor is grounded via the third winding; The sampling pin is grounded via the sampling module, the grounding pin is grounded, and the DRAIN pin is respectively connected to one end of the first winding and the main control circuit; The other end of the first winding is connected to the output end of the rectifier circuit, one end of the second winding is connected to the switch drive circuit and the main control circuit, and the other end of the second winding is grounded.

10. An intelligent switch, characterized in that: The invention comprises a switch base and a lamp switch control device according to any one of claims 1 to 9, wherein the lamp switch control device is arranged in the switch base, and a key switch component is arranged on the switch base.

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