A split-type in-wall intelligent switch solution

Abstract

The present invention relates to the technical field of intelligent switches, and particularly to a split-type in-wall intelligent switch solution, which includes a switch signal generation unit, a mechanical switch, a switch signal reception and processing unit, a wireless module unit, a switch unit, and a load. The switch signal generation unit is respectively connected to the mains live wire, the mechanical switch, and the switch signal reception and processing unit. The switch signal reception and processing unit is also respectively connected to the wireless module unit and the mains neutral wire. The other end of the wireless module unit is connected to the switch unit, the other end of the switch unit is connected to the load, and the other end of the load is connected to the mains neutral wire. This solution divides the switch control circuit into a switch panel signal generation end and a switch signal reception and control end, which can realize the control of the switch by the switch panel, and at the same time can realize wireless remote switching, and there are no problems such as electric leakage and ghost flashing.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent switches, and particularly relates to a split-type in-wall intelligent switch solution. Background Art

[0002] An in-wall switch mainly refers to a switch installed on a wall electrical box in a home, which can control household appliances such as AC220V lights or sockets.

[0003] Currently, in-wall switches on the market include mechanical switches and intelligent switches. Intelligent switches can be further divided into single-phase wire intelligent switches and two-phase wire (live wire and neutral wire) intelligent switches. Intelligent switches generally can not only realize manual switching by pressing the switch panel, but also remote wireless switching or network switching. Currently, most products are single-phase wire intelligent switches. Since in general household power grid wiring, there is only a live wire and no neutral wire in the switch electrical box, it is difficult for two-phase wire intelligent switches to be popularized. Currently, common problems of single-phase wire intelligent switches are electric leakage, ghost flashing, and too large size of the control unit, etc. The sizes of electrical boxes in different countries in the world are not the same, and in some small-sized electrical boxes, it is simply impossible to fit an intelligent switch controller. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a split-type in-wall intelligent switch solution, which solves the above-mentioned technical problems.

[0005] The technical solution adopted by the present invention to solve the problems in the prior art is a split-type in-wall intelligent switch solution, which includes a switch signal generating unit, a mechanical switch, a switch signal receiving and processing unit, a wireless module unit, a switch unit, and a load. The switch signal generating unit is respectively connected to the mains live wire, the mechanical switch, and the switch signal receiving and processing unit. The switch signal receiving and processing unit is also respectively connected to the wireless module unit and the mains neutral wire. The other end of the wireless module unit is connected to the switch unit. The other end of the switch unit is connected to the load. The other end of the load is connected to the mains neutral wire.

[0006] As a preferred solution of the present invention, the switch signal generating unit includes a bidirectional thyristor, a gate circuit, a rectifying and filtering circuit, a DC-DC buck circuit, an opto-isolation circuit, an opto-switch, and a delay circuit. The input end of the bidirectional thyristor is connected to the mains live wire. The control end of the bidirectional thyristor is connected to the gate circuit. The gate circuit is also respectively connected to the rectifying and filtering circuit and the opto-isolation circuit. The rectifying and filtering circuit is connected to the DC-DC buck circuit. The DC-DC buck circuit is respectively connected to the mechanical switch, the delay circuit, and the opto-circuit. The output end of the mechanical switch is connected to the delay circuit. The output end of the delay circuit is connected to the opto-circuit. The output end of the opto-circuit is connected to the opto-isolation circuit.

[0007] As a preferred embodiment of the present invention, it further includes a switch indicator circuit, and the switch lamp indicator circuit is connected to the output ends of the DC-DC buck circuit and the mechanical switch.

[0008] As a preferred embodiment of the present invention, the switch signal receiving and processing unit includes a switch signal detection circuit and an AC-DC circuit, the wireless module unit includes a wireless communication circuit and an LED indicator circuit, the switch unit includes a relay circuit and a relay driving circuit, the switch signal detection circuit is connected to the output end of the switch signal generating unit, the neutral line of the commercial power and the wireless communication circuit, and the AC-DC circuit and the relay circuit are also connected to the output end of the switch signal generating unit and the neutral line of the commercial power. One end of the load is connected to the relay circuit, and the other end of the load is connected to the neutral line of the commercial power. The AC-DC circuit is respectively connected to the switch signal detection circuit, the relay driving circuit and the LED indicator circuit, the wireless communication circuit is respectively connected to the LED indicator circuit and the relay driving circuit, and the relay driving is connected to control and connect the relay circuit.

[0009] As a preferred embodiment of the present invention, the switch signal generating unit and the mechanical switch are arranged in an electrical box under the switch panel, and the switch signal receiving and processing unit, the wireless module unit and the switch unit are arranged at the load.

[0010] As a preferred embodiment of the present invention, the opto-isolation circuit includes diode 1D1, diode 1D2, diode 1Z1, diode 1Z2, MOS optocoupler 1U2 and MOS optocoupler 1U8. Diode 1D1 and diode 1D2 constitute a rectifier circuit, and MOS optocoupler 1U2 and MOS optocoupler 1U8 are connected to the rectifier circuit and the voltage stabilizing circuit.

[0011] As a preferred embodiment of the present invention, the opto-switch circuit includes switch transistor 1Q2 and switch transistor 1Q4. Switch transistor 1Q2 controls and drives MOS optocoupler 1U2, and switch transistor 1Q3 controls and drives MOS optocoupler 1U8.

[0012] As a preferred embodiment of the present invention, the delay circuit includes diode 1D3, diode 1D5, diode 1D6, resistor 1R2, resistor 1R4, resistor 1R5, capacitor 1C1 and capacitor 1C2. One end of diode 1D3, resistor 1R2 and capacitor 1C1 is connected to the G pole of switch transistor 1Q2, the other end of diode 1D3 and resistor 1R2 is connected to the S pole of switch transistor 1Q2. One end of diode 1D5, resistor 1R5 and capacitor 1C2 is connected to the G pole of switch transistor 1Q4, the other end of diode 1D5 and resistor 1R5 is connected to the S pole of switch transistor 1Q4. The other ends of capacitor 1C1 and capacitor 1C2 are connected to diode 1D6 and resistor 1R4. As a preferred embodiment of the present invention, the switch signal detection circuit includes a live wire switch signal detection circuit and a neutral wire switch signal detection circuit which are the same in circuit. The live wire switch signal detection circuit includes a rectification circuit, a voltage division circuit, a voltage stabilization circuit and a comparison circuit. The input ends of the comparison circuit are respectively connected to the rectification circuit, the voltage division circuit and the voltage stabilization circuit, and the output end of the comparison circuit is connected to the wireless communication circuit.

[0013] As a preferred embodiment of the present invention, the AC-DC circuit includes a pre-stage rectification and filtering circuit, a first-stage step-down circuit and a second-stage step-down circuit. The pre-stage rectification and filtering circuit is connected to the first-stage step-down circuit. The first-stage step-down circuit is connected to the switch signal detection circuit, the second-stage step-down circuit and the relay driving circuit. The second-stage step-down circuit is connected to the wireless communication circuit.

[0014] Compared with the prior art, the present invention has the following technical effects:

[0015] In a split-type in-wall intelligent switch solution of the present application, by separating the signal generating end of the switch panel and the switch signal receiving and controlling end, that is, the switch signal generating unit and the mechanical switch in this solution are arranged in the electrical box under the switch panel, and the switch signal receiving and processing unit, the wireless module unit and the switch unit are arranged at the load, it can be realized that the signal generating circuit at the switch panel end can be made very small in volume and can be compatible with electrical box sizes of different countries and different dimensions in the world; at the same time, after the switch signal receiving and controlling end receives the switch signal, it controls the light bulb, so that it can be completely isolated and there is no problem of electric leakage. And because electrical appliances such as light bulbs are completely turned off when the power is off, there will be no phenomenon such as ghost flashing for light bulbs with any power; more importantly, the split-type in-wall intelligent switch solution can not only realize switch panel control of the switch, but also realize wireless remote switching. When the switch panel is used to turn off, it can be remotely switched, and after remote closing, it can also be switched at the switch panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a principle block diagram of a split-type in-wall intelligent switch solution in the present invention;

[0017] Figure 2 is a principle block diagram of the switch signal generating unit in a split-type in-wall intelligent switch solution in the present invention;

[0018] Figure 3 is a circuit schematic diagram of the switch signal generating unit in a split-type in-wall intelligent switch solution in the present invention;

[0019] Figure 4 is a principle block diagram of the circuit arranged at the load in a split-type in-wall intelligent switch solution in the present invention;

[0020] Figure 5It is the circuit schematic diagram of the optocoupler isolation circuit in a split-type in-wall intelligent switch solution of the present invention;

[0021] Figure 6 It is the circuit schematic diagram of the optocoupler switch circuit in a split-type in-wall intelligent switch solution of the present invention;

[0022] Figure 7 It is the circuit schematic diagram of the delay circuit in a split-type in-wall intelligent switch solution of the present invention;

[0023] Figure 8 It is the circuit schematic diagram of the switch indicator circuit in a split-type in-wall intelligent switch solution of the present invention;

[0024] Figure 9 It is the circuit schematic diagram of the gate circuit and the rectifying and filtering circuit in a split-type in-wall intelligent switch solution of the present invention;

[0025] Figure 10 It is the circuit schematic diagram of the DC-DC buck circuit in a split-type in-wall intelligent switch solution of the present invention;

[0026] Figure 11 It is the circuit schematic diagram of the switch signal detection circuit in a split-type in-wall intelligent switch solution of the present invention;

[0027] Figure 12 It is the circuit schematic diagram of the live wire switch signal detection circuit in a split-type in-wall intelligent switch solution of the present invention;

[0028] Figure 13 It is the circuit schematic diagram of the AC-DC circuit in a split-type in-wall intelligent switch solution of the present invention;

[0029] Figure 14 It is the circuit schematic diagram of the relay control circuit in a split-type in-wall intelligent switch solution of the present invention;

[0030] Figure 15 It is the circuit schematic diagram of the wireless module unit in a split-type in-wall intelligent switch solution of the present invention.

[0031] Reference numerals in the figure: 1. Switch signal generation unit; 2. Mechanical switch; 3. Switch signal receiving and processing unit; 4. Wireless module unit; 5. Switch unit; 6. Load; 11. Triac; 12. Gate circuit; 13. Rectifying and filtering circuit; 14. DC-DC buck circuit; 15. Optocoupler isolation circuit; 16. Optocoupler switch circuit; 17. Delay circuit; 18. Switch indicator circuit; 31. Switch signal detection circuit; 32. AC-DC circuit; 41. Wireless communication circuit; 42. LED indication circuit; 51. Relay circuit; 52. Relay drive circuit. Detailed Embodiments

[0032] The following further describes the detailed embodiments of the present invention with reference to the accompanying drawings. It should be noted here that the description of these embodiments is used to help understand the present invention, but does not limit the present invention. In addition, the technical features involved in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0033] As shown in the attached Figure 1 figures: A split-wall-mounted intelligent switch solution includes a switch signal generation unit 1, a mechanical switch 2, a switch signal reception and processing unit 3, a wireless module unit 4, a switch unit 5, and a load 6. The switch signal generation unit 1 is respectively connected to the mains live wire, the mechanical switch 2, and the switch signal reception and processing unit 3. The switch signal reception and processing unit 3 is also respectively connected to the wireless module unit 4 and the mains neutral wire. The other end of the wireless module unit 4 is connected to the switch unit 5. The other end of the switch unit 5 is connected to the load 6. The other end of the load 6 is connected to the mains neutral wire.

[0034] As shown in the attached Figure 2 and 3 figures: Further, the switch signal generation unit 1 includes a triac 11, a gate circuit 12, a rectifier and filter circuit 13, a DC-DC buck circuit 14, an opto-isolation circuit 15, an opto-switch, a delay circuit 17, and a mechanical switch 2. LIN is the mains live wire input, and LOUT is the output after taking power through the switch signal generator.

[0035] Specifically, the input end of the triac 11 is connected to the mains live wire. The control end of the triac 11 is connected to the gate circuit 12. The gate circuit 12 is also respectively connected to the rectifier and filter circuit 13 and the opto-isolation circuit 15. The rectifier and filter circuit 13 is connected to the DC-DC buck circuit 14. The DC-DC buck circuit 14 is respectively connected to the mechanical switch 2, the delay circuit 17, and the opto-circuit. The output end of the mechanical switch 2 is connected to the delay circuit 17. The output end of the delay circuit 17 is connected to the opto-circuit. The output end of the opto-circuit is connected to the opto-isolation circuit 15. Further, a switch indicator circuit 18 is also included. The switch lamp indicator circuit is connected to the output ends of the DC-DC buck circuit 14 and the mechanical switch 2. In the switch signal generator, the triac 11 is the front-end switching device for low-voltage power extraction, and intercepts the low-voltage part not exceeding 12V within each sine wave cycle. When the voltage across the triac 11 is lower than 12V, it turns off, and when it is higher than 12V, it turns on.

[0036] The voltage extraction is taken from the gate circuit 12 of the triac 11. The gate circuit 12 controls the triac 11 to turn off when the voltage on the LIN line is lower than 12V and turn on when it is higher than 12V. When it is turned off, power is taken for the subsequent circuit, and when it is turned on, no power is taken.

[0037] The extracted voltage is rectified and filtered by the rectifier filter circuit 13 to convert the alternating current into direct current and then fed to the DC-DC buck circuit 14. The DC-DC buck circuit 14 steps down the unstable input direct current and stably outputs 3.3V to supply power to the switch indication circuit, the delay circuit 17, and the optocoupler switch circuit 16.

[0038] When the power supply of each part is normal, when the mechanical switch 2K1 is pressed, the switch indication circuit can indicate the switch state. At the same time, the switch signal passes through the delay circuit 17 and then is output to the optocoupler switch circuit 16. The optocoupler switch circuit 16 finally drives the optocoupler isolation circuit 15 and then returns to control the gate circuit 12. The gate circuit 12 then controls the switch of the triac 11 to generate a switch signal and output it to the next-stage load 6. The whole process is an adaptive, self-powered, and self-circulating closed-loop control system.

[0039] The switch signal generates only one switch signal at the moment when the switch is pressed. Holding down K1 continuously will not generate multiple signals. This can avoid the influence on the subsequent load 6 due to too long switch time.

[0040] As Figure 4 shown, further, the switch signal receiving and processing unit ③ includes a switch signal detection circuit 31 and an AC32-DC14 circuit, the wireless module unit ④ includes a wireless communication circuit 41 and an LED indication circuit 42, the switch unit ⑤ includes a relay circuit 51 and a relay driving circuit 52. The switch signal detection circuit 31 is connected to the output terminal L OUT of the switch signal generating unit ①, the mains zero line N, and the wireless communication circuit 41. Also connected to the output terminal of the switch signal generating unit ① and the mains zero line are the AC32-DC14 circuit and the relay circuit 51. One end of the load ⑥ is connected to the relay circuit 51, and the other end of the load ⑥ is connected to the mains zero line. The AC32-DC14 circuit is respectively connected to the switch signal detection circuit 31, the relay driving circuit 52, and the LED indication circuit 42. The wireless communication circuit 41 is respectively connected to the LED indication circuit 42 and the relay driving circuit 52. The relay driving connection controls and connects the relay circuit 51 to control the on / off of the relay circuit 51 and thus control the load 6. The load 6 includes but is not limited to various types of bulbs such as incandescent lamps, halogen lamps, fluorescent lamps, LED lamps, metal halide lamps, sodium lamps, mercury lamps, etc.

[0041] Specifically, as shown in the appendix Figure 5As shown: the optocoupler isolation circuit 15 includes a diode 1D1, a diode 1D2, a diode 1Z1, a diode 1Z2, a MOS optocoupler 1U2 and a MOS optocoupler 1U8. The diodes 1D1 and 1D2 constitute a rectifier circuit. The MOS optocouplers 1U2 and 1U8 are connected to the rectifier circuit and the voltage stabilizing circuit to prevent the MOS optocouplers 1U2 and 1U8 from overvoltage.

[0042] In this embodiment, MOS optocouplers 1U2 and 1U8 are normally closed MOS optocouplers. This allows low-voltage control of the on / off switching of high-voltage signals. Normally closed optocouplers are normally on when no switching signal is being generated, thus saving energy. Furthermore, since they are normally on, load 6 remains operational regardless of whether it is on or off. This significantly reduces the product's standby power consumption.

[0043] Specifically, as attached Figure 6 As shown: the optocoupler switch circuit 16 includes a switch tube 1Q2 and a switch tube 1Q4. The switch tube 1Q2 controls the driving of the MOS optocoupler 1U2, and the switch tube 1Q3 controls the driving of the MOS optocoupler 1U8. In addition, in order to prevent damage to the MOS optocoupler 1U2 and the MOS optocoupler 1U8, the MOS optocoupler 1U2 and the MOS optocoupler 1U8 are respectively connected to the driving current limiting resistor 1R3 and the driving current limiting resistor 1R1.

[0044] Specifically, as attached Figure 7 As shown, the delay circuit 17 includes a diode 1D3, a diode 1D5, a diode 1D6, a resistor 1R2, a resistor 1R4, a resistor 1R5, a capacitor 1C1, and a capacitor 1C2, forming a RC delay circuit 177 to extend the duration of the switching signal. One end of the diode 1D3, resistor 1R2, and capacitor 1C1 is connected to the G terminal of the switching tube 1Q2, and the other end of the diode 1D3 and resistor 1R2 is connected to the S terminal of the switching tube 1Q2. One end of the diode 1D5, resistor 1R5, and capacitor 1C2 is connected to the G terminal of the switching tube 1Q4, and the other end of the diode 1D5 and resistor 1R5 is connected to the S terminal of the switching tube 1Q4. The other end of the capacitor 1C1 and capacitor 1C2 is connected to the diode 1D6 and resistor 1R4.

[0045] Specifically, as attached Figure 8 As shown: the switch indicator light circuit 18 includes a switch tube 1Q5, a resistor 1R6, a resistor 1R7, a diode 1D7 and a diode 1D8, which serves as an LED indicator light to indicate the switch state of the mechanical switch 28.

[0046] Specifically, as attached Figure 9As shown: The bidirectional thyristor 111 for controlling the mains switch is the bidirectional thyristor 111Q3; The diode 1Z3, diode 1Z4 and bidirectional thyristor 111Q1 form the gate circuit 122; The diode 1D4, diode 1Z5 and capacitor 1C3 constitute the rectifier filter circuit 133, which plays the role of rectification, voltage stabilization and filtering.

[0047] Specifically, as shown in the appendix Figure 10 As shown: The DC-DC buck circuit 14 includes a buck chip 1U7, a resistor 1R15, a switching transistor 1Q10, a diode 1D16, an inductor 1L1 and a capacitor 1C6 to form a switching power supply circuit, which further reduces the voltage of the previous stage to 3.3V for the subsequent stage. The buck chip is respectively connected to the resistor 1R15, the switching transistor 1Q10 and the diode 1D16. The D pole of the switching transistor 1Q10 and the negative pole of the diode 1D16 are connected to the inductor 1L1, and the other end of the inductor 1L1 is connected to the capacitor 1C6. As shown in the appendix Figure 11 and Figure 12 As shown: Specifically, the switch signal detection circuit 31 includes a live wire switch signal detection circuit 31 and a neutral wire switch signal detection circuit 31 with the same circuit. The live wire switch signal detection circuit 31 includes a rectifier circuit, a voltage dividing circuit and a voltage stabilizing circuit composed of a diode 2D2, a diode 2D3, a diode 2Z2, a diode 2Z3, a resistor R7 and a resistor R9, which reduces the high voltage of the mains to a low voltage;

[0048] In addition, the live wire switch signal detection circuit 31 also includes a comparison circuit composed of a resistor 2R1, a resistor 2R4, a capacitor 2C1, a resistor 2R10, a capacitor 2C6, a detection chip 2U1, a resistor 2R8, a capacitor 2C7, a diode 2Z5 and a resistor 2R27. The input ends of the comparison circuit are respectively connected to the rectifier circuit, the voltage dividing circuit and the voltage stabilizing circuit. The output end of the comparison circuit is connected to the wireless communication circuit 41, which can detect the switch signal in the mains circuit and output it to SWTCH1. SWTCH1 is connected to the I / O port of the wireless module controller connected to the wireless communication circuit 41. The detection chip 2U1 is also connected to a capacitor 2C3, and this capacitor 2C3 filters the power supply of the detection chip 2U1.

[0049] As shown in the appendix Figure 13 As shown: Further, the AC32-DC14 circuit includes a pre-stage rectifier filter circuit 13, a first-stage buck circuit and a second-stage buck circuit. The pre-stage rectifier filter circuit 13 is connected to the first-stage buck circuit. The first-stage buck circuit is connected to the switch signal detection circuit 31, the second-stage buck circuit and the relay drive circuit 52. The first-stage buck circuit is the first-stage buck, which reduces the mains voltage to 12V low voltage. This power supply only supplies the switch signal detection circuit 31, the second-stage buck circuit and the relay drive circuit 52;

[0050] The secondary step-down circuit is connected to the wireless communication circuit 41, further reducing the 12V voltage generated by the primary step-down to 3.3V, and then supplying power to the wireless communication circuit 41.

[0051] Specifically, in the circuit schematic diagram, the fuse 2F2 plays a role in current limiting protection to prevent short circuits; the resistor 2R15 protects the components of the AC32-DC14 circuit against overvoltage, while the rectifier bridge 2D7, capacitor 2C15, inductor 2L2, and capacitor 2C16 constitute the pre-stage rectifier and filter circuit 13.

[0052] As Figure 14 shown: 2K1 is the relay in the relay circuit 51, which is the terminal device for executing the final panel switch signal and wireless control signal, and is used to control the switch of the load 6.

[0053] The capacitor 2C24, capacitor 2C25, resistor 2R26, diode 2D6, switching transistor 2Q1, resistor 2R19, capacitor 2C14, and diode 2Z7 constitute the relay drive circuit 52, driving the relay switch to act and controlling the switch through the RELAY1 signal. The RELAY1 signal comes from the I / O port of the wireless module controller connected to the wireless communication circuit 41. [[ID=X]]

[0054] Furthermore, it also includes an overcurrent protection circuit composed of the fuse 2F1, chip 2U6, capacitor 2C28, chip 2U7, resistor 2R29, resistor 2R30, diode 2D12, capacitor 2C30, diode 2Z9, capacitor 2C29, resistor 2R31, and resistor 2R32. When the load 6 has a fault overcurrent or short circuit, it can provide timely protection, preventing risks such as circuit burnout and fire, and outputting the overcurrent signal to C_S. C_S is connected to the I / O port of the wireless module controller connected to the wireless communication circuit 41.

[0055] [[ID=X]] Figure 15 shown: The LED indication circuit 42 is composed of the resistor 2R21, diode 2D11, switch 2K3, capacitor 2C23, resistor 2R20, diode 2D10, and switching transistor 2Q2, indicating the working state of the wireless communication module.

[0056] The wireless communication circuit 41 includes the ZigBee Module 2J1 connected to the wireless module and the inductor 2L4. The wireless module can adopt a zigbee wireless module, and the inductor 2L4 plays a role in interference isolation.

[0057] The wireless communication circuit 41 also includes a reset circuit composed of the switch 2K2, resistor 2R23, capacitor 2C21, chip 2U5, and capacitor 2C22, which is used to automatically reset the wireless module unit 4 in case of anomalies.

[0058] ​Mechanical switch 2 process: Pressing the panel of mechanical switch 2 generates a switch signal and transmits it to the switch signal generating unit 1. The switch signal generating unit 1 transmits the signal to the switch signal acquisition and processing circuit. The switch signal acquisition circuit analyzes the switch signal and forwards it to the wireless control circuit, and then the wireless control circuit controls the switch circuit to turn the light on and off.

[0059] Mechanical switch 2 process: Pressing the panel of mechanical switch 2 generates a switch signal and transmits it to the switch signal generating unit 1. The switch signal generating unit 1 transmits the signal to the switch signal acquisition and processing circuit. The switch signal acquisition circuit analyzes the switch signal and forwards it to the wireless control circuit, and then the wireless control circuit controls the switch circuit to turn the light on and off.

[0060] The panel switch of mechanical switch 2 and the wireless control switch are independent of each other without any conflict or interference. For example, after the panel of mechanical switch 2 turns off the light, the light can be turned on through the wireless control switch; after the wireless control turns off the light, the light can also be turned on through the panel switch of mechanical switch 2.

[0061] The panel of mechanical switch 2 is used to input switch signals, supports rocker switches and rebound switches, and can turn the light on and off by pressing mechanical switch 2. Similar to traditional mechanical switch 2, it can achieve the effect of complete isolation of the switch. Complete isolation of the switch means that when the power is off, there is no voltage at the load 6 and it is completely disconnected. While the existing single-phase live wire in-wall switches on the market have slight leakage.

[0062] The wireless control unit controls the switch of the light through wireless communication. The wireless switch is also a completely isolated switch like the panel control switch of mechanical switch 2 above. The supported wireless control types include: ZigBee, Zwave, WiFi, BT, LoRa, 4G, etc., without power consumption limitations. While the existing single-phase live wire in-wall switches on the market only support low-power control methods such as ZigBee and BT, and control methods such as 4G and WiFi cannot be supported.

[0063] At the same time, this application supports various low-power light bulbs. While the existing single-phase live wire in-wall switches on the market only support light bulbs with a power of more than 3W, and the switch function cannot be realized when the power is less than 3W.

[0064] Finally, it should be noted that: The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A split-type wall-mounted intelligent switch, characterized in that: It includes a switch signal generation unit, a mechanical switch, a switch signal receiving and processing unit, a wireless module unit, a switch unit and a load. The switch signal generation unit is respectively connected to the live wire of the mains power, the mechanical switch and the switch signal receiving and processing unit. The switch signal receiving and processing unit is also respectively connected to the wireless module unit and the neutral wire of the mains power. The other end of the wireless module unit is connected to the switch unit. The other end of the switch unit is connected to the load. The other end of the load is connected to the neutral wire of the mains power; The switch signal generation unit includes a bidirectional thyristor, a gate circuit, a rectifier and filter circuit, a DC-DC buck circuit, an opto-isolation circuit, an opto-switch and a delay circuit. The input end of the bidirectional thyristor is connected to the live wire of the mains power. The control end of the bidirectional thyristor is connected to the gate circuit. The gate circuit is also respectively connected to the rectifier and filter circuit and the opto-isolation circuit. The rectifier and filter circuit is connected to the DC-DC buck circuit. The DC-DC buck circuit is respectively connected to the mechanical switch, the delay circuit and the opto-circuit. The output end of the mechanical switch is connected to the delay circuit. The output end of the delay circuit is connected to the opto-circuit. The output end of the opto-circuit is connected to the opto-isolation circuit; It also includes a switch indicator circuit, and the switch indicator circuit is connected to the DC-DC buck circuit and the output end of the mechanical switch; The switch signal receiving and processing unit includes a switch signal detection circuit and an AC-DC circuit. The wireless module unit includes a wireless communication circuit and an LED indication circuit. The switch unit includes a relay circuit and a relay drive circuit. The switch signal detection circuit is connected to the output end of the switch signal generation unit, the neutral wire of the mains power and the wireless communication circuit. The AC-DC circuit and the relay circuit are also connected to the output end of the switch signal generation unit and the neutral wire of the mains power. One end of the load is connected to the relay circuit, and the other end of the load is connected to the neutral wire of the mains power. The AC-DC circuit is respectively connected to the switch signal detection circuit, the relay drive circuit and the LED indication circuit. The wireless communication circuit is respectively connected to the LED indication circuit and the relay drive circuit. The relay drive circuit is controllably connected to the relay circuit.

2. The split wall-mounted intelligent switch according to claim 1, characterized in that: The switch signal generation unit and the mechanical switch are arranged in an electrical box under the switch panel. The switch signal receiving and processing unit, the wireless module unit and the switch unit are arranged at the load.

3. The split-wall-mounted intelligent switch according to claim 2, wherein: The opto-isolation circuit includes diode 1D1, diode 1D2, diode 1Z1, diode 1Z2, MOS opto-coupler 1U2 and MOS opto-coupler 1U8. Diode 1D1 and diode 1D2 form a rectifier circuit. MOS opto-coupler 1U2 and MOS opto-coupler 1U8 are connected to the rectifier circuit and the voltage stabilizing circuit.

4. The split-wall-mounted intelligent switch according to claim 3, wherein: It also includes an opto-switch circuit. The opto-switch circuit includes switch transistor 1Q2 and switch transistor 1Q4. Switch transistor 1Q2 controls and drives MOS opto-coupler 1U2, and switch transistor 1Q3 controls and drives MOS opto-coupler 1U8.

5. The split-wall-mounted intelligent switch according to claim 4, wherein: The delay circuit includes diode 1D3, diode 1D5, diode 1D6, resistor 1R2, resistor 1R4, resistor 1R5, capacitor 1C1 and capacitor 1C2. One ends of the diode 1D3, resistor 1R2 and capacitor 1C1 are connected to the G pole of the switching transistor 1Q2, and the other ends of the diode 1D3 and resistor 1R2 are connected to the S pole of the switching transistor 1Q2. One ends of the diode 1D5, resistor 1R5 and capacitor 1C2 are connected to the G pole of the switching transistor 1Q4, and the other ends of the diode 1D5 and resistor 1R5 are connected to the S pole of the switching transistor 1Q4. The other ends of the capacitor 1C1 and capacitor 1C2 are connected to the diode 1D6 and resistor 1R4.

6. The split-wall-mounted intelligent switch according to claim 5, characterized in that: The switch signal detection circuit includes a live wire switch signal detection circuit and a neutral wire switch signal detection circuit with the same circuit. The live wire switch signal detection circuit includes a rectification circuit, a voltage division circuit, a voltage stabilization circuit and a comparison circuit. The input ends of the comparison circuit are respectively connected to the rectification circuit, the voltage division circuit and the voltage stabilization circuit, and the output end of the comparison circuit is connected to the wireless communication circuit.

7. The split-wall-mounted intelligent switch according to claim 6, characterized in that: The AC-DC circuit includes a pre-stage rectification and filtering circuit, a first-stage step-down circuit and a second-stage step-down circuit. The pre-stage rectification and filtering circuit is connected to the first-stage step-down circuit. The first-stage step-down circuit is connected to the switch signal detection circuit, the second-stage step-down circuit and the relay drive circuit. The second-stage step-down circuit is connected to the wireless communication circuit.

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