Induction type pickup switching circuit

Abstract

The utility model provides an induction type pickup switching circuit, which comprises a touch induction circuit, a chip, a trigger circuit, a discharge circuit and a control circuit, and is characterized in that the touch induction circuit is used for receiving touch signals and converting the touch signals into pulse signals; the chip is provided with a sensitivity capacitor, a charge collection capacitor and a chip output pin; the trigger circuit is used for receiving the pulse signal and transmitting the signal to the discharge circuit and the control circuit; the discharging circuit is used for discharging to reduce the level value of the trigger circuit; the control circuit is used for transmitting a startup instruction to the sound pickup. Touch signals are converted into pulse signals through the chip, the trigger circuit and the discharging circuit process the pulse signals, the control circuit enables the pickup to be started through the pulse signals, the function of silently starting the pickup is achieved, a microphone is prevented from recording unnecessary noise and affecting use, and the circuit can be widely applied to the technical field of circuits.

Description

Technical Field

[0001] The utility model belongs to the technical field of circuits, and particularly relates to an inductive pickup switch circuit. Background Art

[0002] In the existing control circuit technology, most of them use touch switches, pots and even conductive carbon film silicone switches. These switches are set on the microphone and usually make a slight sound when connected or disconnected. These slight sounds will be transmitted to the microphone through vibration, causing the microphone to record unnecessary noise and affecting the user experience. Utility Model Content

[0003] The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes an inductive pickup switch circuit, which has a silent pickup start function to prevent the microphone from recording unnecessary noise and affecting its use.

[0005] In a first aspect, the utility model provides an inductive pickup switch circuit, comprising:

[0006] A touch sensing circuit, used for receiving a touch signal and converting the touch signal into a pulse signal;

[0007] A chip connected to the touch sensing circuit, provided with a sensitivity capacitor and a chip output pin; wherein the sensitivity capacitor is used to receive a pulse signal of the touch sensing circuit, and the chip output pin is used to output a pulse signal to the trigger circuit;

[0008] The trigger circuit is provided with a first trigger circuit and a second trigger circuit, wherein one end of the first trigger circuit is connected to the chip and the other end is connected to the second trigger circuit, and one end of the second trigger circuit is connected to the first trigger and the other end is connected to the discharge circuit and the control circuit;

[0009] The discharge circuit receives a signal from the second trigger circuit and is used for discharging to reduce a level value;

[0010] The control circuit receives the signal from the second trigger circuit and is used to transmit a power-on instruction to the pickup.

[0011] In some optional embodiments, the first trigger circuit is provided with a first data pin, a first set pin, a first reset pin, a first pulse signal pin, a first original code output terminal and a first inverted code output terminal.

[0012] In some optional embodiments, the second trigger circuit is provided with a second data pin, a second set pin, a second reset pin, a second pulse signal pin, a second original code output terminal, a second inverse code output terminal and a trigger digital power pin.

[0013] In some optional embodiments, the control circuit is provided with a switch circuit and a display circuit; the switch circuit is provided with a first switch resistor, a second switch resistor, a switch transistor and a switch capacitor;

[0014] The display circuit is provided with a first display resistor, a second display resistor, a third display resistor, a display triode and a display capacitor.

[0015] In some optional embodiments, the chip is provided with a ground line, a chip digital power pin and a charge collection capacitor.

[0016] In some optional embodiments, the first pulse signal pin receives a signal from the chip, and the second pulse signal pin receives a signal from the first original code output terminal.

[0017] In some optional embodiments, the first data pin converts the level value of the first pulse signal pin into a corresponding digital value in response to the signal of the first pulse signal pin;

[0018] The second data pin converts the level value of the discharge circuit into a corresponding digital value in response to the signal of the discharge circuit.

[0019] In some optional embodiments, when the first setting pin is at a high level, the first original code output terminal and the first inverted code output terminal are flipped;

[0020] When the second setting pin is at a high level, the second original code output terminal and the second inverted code output terminal are flipped.

[0021] In some optional embodiments, when the first reset pin is at a high level, the first original code output terminal and the first inverted code output terminal are flipped to a starting state;

[0022] When the second reset pin is at a high level, the second original code output terminal and the second inverted code output terminal are flipped to a starting state.

[0023] In some optional embodiments, the second inverted code output terminal transmits a signal to the discharge circuit;

[0024] The second original code output terminal transmits a signal to the control circuit.

[0025] The utility model proposes an inductive pickup switch circuit, which includes a touch sensing circuit, a chip, a trigger circuit, a discharge circuit and a control circuit; wherein the touch sensing circuit is used to receive a touch signal and convert the touch signal into a pulse signal; the chip is provided with a sensitivity capacitor, a charge collection capacitor and a chip output pin, which are connected to the touch sensing circuit; wherein the sensitivity capacitor is used to receive the pulse signal of the touch sensing circuit, the charge collection capacitor is used to collect charges, and the chip output pin is used to output a pulse signal to the trigger circuit; the trigger circuit is provided with a first trigger circuit and a second trigger circuit, wherein one end of the first trigger circuit is connected to the chip and the other end is connected to the second trigger circuit, one end of the second trigger circuit is connected to the first trigger and the other end is connected to the discharge circuit and the control circuit; the discharge circuit receives a signal from the second trigger circuit for discharging to reduce a level value; the control circuit is connected to the second trigger circuit and is used to transmit a power-on instruction to the pickup. The utility model converts the touch signal into a pulse signal through a chip, and the trigger circuit and the discharge circuit process the pulse signal to reduce the level value to prevent the circuit from being turned on by accidental touch. The control circuit turns on the microphone through the pulse signal and has the function of silently starting the microphone, thereby preventing the microphone from recording unnecessary noise and affecting the use. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is an overall schematic diagram of an inductive pickup switch circuit provided by an embodiment of the utility model;

[0027] Figure 2 It is a schematic diagram of a touch sensing circuit of an inductive pickup switch circuit provided by an embodiment of the utility model;

[0028] Figure 3 It is a chip schematic diagram of an inductive pickup switch circuit provided by an embodiment of the utility model;

[0029] Figure 4 It is a schematic diagram of a trigger circuit of an inductive pickup switch circuit provided by an embodiment of the utility model;

[0030] Figure 5 It is a schematic diagram of a control circuit of an inductive pickup switch circuit provided by an embodiment of the utility model;

[0031] Figure 6 It is a schematic diagram of a discharge circuit of an inductive pickup switch circuit provided by an embodiment of the utility model;

[0032] Reference numerals: touch sensing circuit 100;

[0033] Chip 200, charge collection capacitor 210, sensitivity capacitor 220, chip output pin 230, ground line 240, chip digital power pin 250, first resistor 260, first chip capacitor 270, second chip capacitor 280, second resistor 290;

[0034] The trigger circuit 300, the first trigger circuit 310, the first original code output terminal 3110, the first inverted code output terminal 3120, the first reset pin 3140, the first pulse signal pin 3130, the first data pin 3150, the first set pin 3160, the second trigger circuit 320, the trigger digital power pin 3210, the second original code output terminal 3220, the second inverted code output terminal 3230, the second pulse signal pin 3240, the second reset pin 3250, the second data pin 3260, and the second set pin 3270;

[0035] Discharge circuit 400, first discharge resistor 410, first discharge capacitor 420, second discharge resistor 430;

[0036] Control circuit 500 , switch circuit 510 , first switch resistor 5110 , second switch resistor 5120 , switch transistor 5130 , switch capacitor 5140 , display circuit 520 , first display resistor 5210 , second display resistor 5220 , third display resistor 5240 , display capacitor 5230 , display transistor 5250 . DETAILED DESCRIPTION

[0037] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0039] It should be noted that, although the functional modules are divided in the device schematic diagram and the logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than the module division in the device or the order in the flowchart. The terms "first", "second", etc. in the specification, claims or the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0040] like Figure 1As shown, the utility model discloses an inductive pickup switch circuit, which includes a touch sensing circuit 100, a chip 200, a trigger circuit 300, a discharge circuit 400 and a control circuit 500. The touch sensing circuit 100 is used to receive a touch signal and convert the touch signal into a pulse signal; the chip 200 is provided with a sensitivity capacitor and an output pin of the chip 200, which are connected to the touch sensing circuit 100; the sensitivity capacitor is used to receive a pulse signal of the touch sensing circuit 100 and send a start signal to the output pin of the chip 200; the output pin of the chip 200 is used to output a pulse signal to the trigger circuit 300. The trigger circuit 300 is provided with a first trigger circuit 310 and a second trigger circuit 320, wherein one end of the first trigger circuit 310 is connected to the chip 200, and the other end is connected to the second trigger circuit 320, and one end of the second trigger circuit 320 is connected to the first trigger, and the other end is connected to the discharge circuit 400 and the control circuit; the discharge circuit 400 is used to receive a signal from the second trigger circuit 320, and is used to discharge to reduce the level value; the control circuit is used to connect to the second trigger circuit 320, and is used to transmit a power-on instruction to the pickup and display the machine operation status.

[0041] Among them, when the user places a finger on the touch sensing circuit 100, the touch sensing circuit 100 will transmit the touch signal to the chip 200. The chip 200 is provided with a sensitivity capacitor, and the value of the sensitivity capacitor ranges from 15pf to 100pf. The smaller the value, the higher the capacitance sensitivity, and the chip 200 only needs less touch time to start converting the touch signal into a pulse signal. The larger the value, the lower the capacitance sensitivity, and the chip 200 needs a longer touch time to start converting the touch signal into a pulse signal. After the chip 200 converts the touch signal into a pulse signal, the pulse signal is a downwardly shaped pulse waveform, that is, a pulse signal with a gradually decreasing level value, and is sent to the first trigger circuit. The first trigger circuit 310 is connected to the second trigger circuit 320 and sends a pulse signal to the second trigger circuit 320. The second trigger circuit 320 is connected to the discharge circuit 400 and the control circuit. The pulse signal of the second trigger circuit first passes through the discharge circuit 400. The discharge circuit 400 discharges the pulse signal and converts the pulse signal to a low level. At this time, the second trigger circuit 320 will not flip, and the pulse signal will not enter the control circuit, preventing the circuit from turning on due to accidental touch. After 0.5 seconds of discharge, the second trigger circuit 320 will enter a high level during the second downward-shaped pulse band. At this time, the second trigger circuit 320 flips and outputs the pulse signal to the control circuit, and the control circuit turns on the pickup through the pulse signal. The utility model converts the touch signal into a pulse signal through a chip, and the trigger circuit and the discharge circuit 400 process the pulse signal. The control circuit turns on the pickup through a pulse signal, and has a silent start pickup function to prevent the microphone from recording unnecessary noise and affecting use.

[0042] like Figure 2 As shown, in some optional embodiments, the touch sensing circuit 100 includes a touch pad.

[0043] like Figure 3 As shown, in some optional embodiments, the chip 200 is provided with a ground line 240 and a chip digital power pin 250, a first resistor 260, a first chip capacitor 270, a second chip capacitor 280 and a second resistor 290. Among them, the first resistor 260 is used to increase the resistance of the chip to prevent the current from exceeding the rated operating current of the chip 200. The second resistor 290 is used to increase the resistance of the trigger circuit 300 to prevent the current from exceeding the rated operating current of the trigger circuit 300. The first chip capacitor 270 and the second chip capacitor 280 are used to provide a low-resistance bypass. The chip digital power pin 250 is used to provide the necessary power to the chip 200, and the ground line 240 is used to provide a negative electrode to the chip.

[0044] In some optional embodiments, the charge collection capacitor is used to collect charges to prevent charge overload from damaging the chip 200 .

[0045] like Figure 4 As shown, in some optional embodiments, the first trigger circuit 310 includes a first data pin 3150, a first set pin 3160, a first reset pin 3140, a first pulse signal pin 3130, a first original code output terminal 3110 and a first inverted code output terminal 3120. When the first original code output terminal 3110 and the first inverted code output terminal 3120 are in the initial state, the first original code output terminal 3110 is at a high level, and the first inverted code output terminal 3120 is at a low level. When the first inverted code output terminal 3120 is at a high level, the first original code output terminal 3110 is at a low level, that is, the first original code output terminal 3110 and the first inverted code output terminal 3120 are always opposite, and when any output terminal is at a low level, it is in a conducting state.

[0046] like Figure 4 As shown, in some optional embodiments, the second trigger circuit 320 includes a second data pin 3260, a second set pin 3270, a second reset pin 3250, a second pulse signal pin 3240, a second original code output terminal 3220, a second inverted code output terminal 3230 and a trigger digital power pin 3210. When the second original code output terminal 3220 and the second inverted code output terminal 3230 are in the starting state, the second original code output terminal 3220 is at a high level and the second inverted code output terminal 3230 is at a low level. When the second inverted code output terminal 3230 is at a high level, the second original code output terminal 3220 is at a low level, that is, the second original code output terminal 3220 and the second inverted code output terminal 3230 are always opposite, and when any output terminal is at a low level, it is in a conducting state. The trigger digital power pin 3210 is used to provide power to the trigger.

[0047] like Figure 4 As shown, in some optional embodiments, the first pulse signal pin 3130 receives a signal from the chip 200, and the second pulse signal pin 3240 receives a signal from the first original code output terminal 3110. The chip 200 transmits a pulse signal to the first trigger circuit 310 via the chip output pin 230.

[0048] In some optional embodiments, the first data pin 3150 responds to the signal of the first pulse signal pin 3130, converts the level value of the first pulse signal pin 3130 into a corresponding digital value; and sends a flip instruction to the first set pin 3160 and the first reset pin 3140,

[0049] The second data pin 3260 responds to the signal of the discharge circuit 400 , converts the level value processed by the discharge circuit 400 into a corresponding digital value; and sends a flip to the second set pin 3270 and the second reset pin 3250 .

[0050] In some optional embodiments, when the first set pin 3160 is at a high level, the first original code output terminal 3110 and the first inverted code output terminal 3120 are flipped. When the first original code output terminal 3110 and the first inverted code output terminal 3120 are in their original positions, a high level is output by default, and a low level is output after flipping.

[0051] When the second setting pin 3270 is at a high level, the second original code output terminal 3220 and the second inverted code output terminal 3230 are flipped. When the second original code output terminal 3220 and the second inverted code output terminal 3230 are in the original position, the default output is a high level, and after flipping, the output is a low level.

[0052] In some optional embodiments, when the first reset pin 3140 is at a high level, the first original code output terminal 3110 and the first inverted code output terminal 3120 are flipped to their original positions; when the second reset pin 3250 is at a high level, the second original code output terminal 3220 and the second inverted code output terminal 3230 are flipped to their original positions.

[0053] The level values ​​of the first set pin 3160 and the first reset pin 3140 do not interfere with the level values ​​of the second set pin 3270 and the second reset pin 3250. The level values ​​of the first set pin 3160 and the first reset pin 3140 are obtained only by calculating the level value of the first pulse signal pin 3130 by the first data pin 3150. The level values ​​of the second set pin 3270 and the second reset pin 3250 are obtained only by calculating the level value processed by the discharge circuit 400 by the second data pin 3260. The level values ​​of the first set pin 3160 and the first reset pin 3140 cannot both be equal to the high level, that is, when the first set pin 3160 is at a high level, the first reset pin 3140 is at a low level, and when the first set pin 3160 is at a high level, the first reset pin 3140 is at a low level. The level values ​​of the second set pin 3270 and the second reset pin 3250 cannot both be high levels, that is, when the second set pin 3270 is at a low level and the second reset pin 3250 is at a high level, the second set pin 3270 is at a high level value and the second reset pin 3250 is at a low level value.

[0054] like Figure 5As shown, in some optional embodiments, the control circuit is provided with a switch circuit 510 and a display circuit 520; the switch circuit is used to transmit a power-on signal to the device, and the display circuit is used to display whether the device is in a power-on state. The switch circuit is provided with a first switch resistor 5110, a second switch resistor 5120, a switch transistor 5130 and a switch capacitor 5140, the emitter and collector voltages of the switch transistor 5130 are both 3.3V, and the switch capacitor 5140 is used to provide a low-resistance bypass. When the circuit network node is low, the base and emitter of the switch transistor 5130 are turned on due to the voltage difference of 0.6V, and a power-on signal is sent to the pickup. The display circuit is provided with a first display resistor 5210, a second display resistor 5220 and a third display resistor 5240, a display transistor 5250, and a display capacitor 5230. When the pulse signal passes through the display circuit, the LED light on the pickup will turn on, indicating that the current circuit is working normally.

[0055] In some optional embodiments, the second inverted code output terminal 3230 transmits a signal to the discharge circuit 400, providing the discharge circuit 400 with a pulse signal that can discharge. After discharge, the discharge circuit 400 transmits the pulse signal to the second data pin, and the second data pin 3260 calculates the level value at this time and transmits the result to the second set pin 3270 and the second reset pin 3250. When the second data pin 3260 is at a high level, the second set pin 3270 is at a high level, and the second reset pin 3250 is at a low level.

[0056] In some optional embodiments, at the second inverted code output terminal 3230, the second original code output terminal 3220 transmits a signal to the control circuit, providing a power-on signal to the control circuit.

[0057] The following is explained through a specific embodiment.

[0058] like Figures 1 to 6 As shown, first, the components are placed in the circuit according to the design, and the circuit is powered on. In the initial state, the first original code output terminal 3110 and the second original code output terminal 3120 are both at a high level, while the first inverted code output terminal 3120 and the second inverted code output terminal 3230 are both at a low level, the first pulse signal pin 3130 and the second pulse signal pin 3240 are at a low level, and the first data pin 3150 and the second data pin 3260 are at a low level. The user puts a finger on the touch sensing circuit 100, and the touch sensing circuit 100 inputs the touch signal into the chip 200.

[0059] After the touch signal enters the chip 200, it first enters the sensitivity capacitor 220. The sensitivity of the sensitivity capacitor 220 can be adjusted as needed. The lower the sensitivity, the longer the user needs to touch the chip 200 to convert the touch signal into a pulse signal. The higher the sensitivity, the shorter the user needs to touch the chip 200 to convert the touch signal into a pulse signal. The charge collection capacitor 210 is used to collect charges to prevent the amount of charge from being too high and damaging the circuit.

[0060] After the chip 200 converts the touch signal into a pulse signal, the pulse signal is transmitted from the chip output pin 230 to the first pulse signal pin 3130 in the first trigger circuit 310, and the first pulse signal pin 3130 transmits the pulse signal to the first data pin 3150. At this time, the level value of the first data pin 3150 is changed from low level to high level, and the first original code output terminal 3110 is flipped from high level to low level through the first set pin 3160, and the first inverted code output terminal 3120 is turned to high level. At this time, the first original code output terminal 3110 is turned on, and the first original code output terminal 3110 outputs a pulse signal to the second trigger circuit 320. Since the first inverted code output terminal 3120 is connected to the ground line, the first inverted code output terminal 3120 does not output to the outside. When the current pulse signal ends, the first pulse signal pin 3130 and the first data pin 3150 return to a low level, thereby the first set pin 3160 returns to a low level, and the first reset pin 3140 flips the first original code output terminal 3110 to a high level.

[0061] When the second trigger circuit 320 receives a signal from the first trigger circuit 310, it receives it through the second pulse signal pin 3240. The second pulse signal pin 3240 outputs the pulse signal to the second inverted code output terminal 3230. At this time, the second inverted code output terminal 3230 is at a low level, so it is turned on to the discharge circuit 400. The discharge circuit 400 is provided with a first discharge resistor 410, a second discharge resistor 430 and a first discharge capacitor 420. The components are used to discharge the pulse signal in the second trigger circuit 320 to prevent the second data pin 3260 from reaching a high level immediately. It takes about 0.5 seconds for the pulse signal to pass through the discharge circuit 400 completely, so it takes at least 0.5 seconds of touch time to make the second data pin 3260 enter a high level. During this waiting time, due to continued touch, the touch sensing circuit 100 and the chip 200 will repeat the above process and send a pulse signal to the trigger circuit 300 again. When the pulse signal goes down this time, the second original code output terminal 3220 will be flipped to a low level and the signal will be transmitted to the control circuit 500. This prevents the circuit from turning on due to accidental touch.

[0062] When the pulse signal enters the control circuit 500, it will pass through the switch circuit 510 and the display circuit 520 respectively. When the pulse signal passes through the display circuit 520, it will pass through the LED light structure composed of the first display resistor 5210, the second display resistor 5220, the third display resistor 5240 and the display triode 5250 to display whether the switch circuit is turned on normally, and the display capacitor 5230 can provide a low-resistance bypass. When the pulse signal passes through the switch circuit 510, it will pass through the first switch resistor 5110, the second switch resistor 5120, the switch triode 5130 and the switch capacitor 5140. The first switch resistor 5110 and the second switch resistor 5120 will prevent the pulse signal from exceeding the rated current required by the switch circuit. The switch capacitor 5140 provides a low-resistance bypass. At this time, there is a voltage difference between the node where the switch transistor 5130 is connected to the switch capacitor 5140 and the node where the switch transistor 5130 is connected to the switch resistor. At this time, the base and emitter of the switch transistor 5130 are turned on due to the voltage difference of 0.6V, sending a power-on signal to the pickup.

[0063] The above is a specific description of the preferred implementation of the present invention, but the present invention is not limited to the above-mentioned implementation mode. Technical personnel familiar with the field can also make various equivalent deformations or substitutions under the shared conditions without violating the spirit of the present invention. These equivalent deformations or substitutions are all included in the scope defined by the present invention.

Claims

1. An inductive pickup switch circuit, characterized in that: include: A touch sensing circuit, used for receiving a touch signal and converting the touch signal into a pulse signal; A chip connected to the touch sensing circuit and provided with a sensitivity capacitor and a chip output pin; The sensitivity capacitor is used to receive the pulse signal of the touch sensing circuit, and the chip output pin is used to output the pulse signal to the trigger circuit; The trigger circuit is provided with a first trigger circuit and a second trigger circuit, wherein one end of the first trigger circuit is connected to the chip and the other end is connected to the second trigger circuit, and one end of the second trigger circuit is connected to the first trigger and the other end is connected to the discharge circuit and the control circuit; The discharge circuit receives a signal from the second trigger circuit and is used for discharging to reduce a level value; The control circuit receives the signal from the second trigger circuit and is used to transmit a power-on instruction to the pickup.

2. The inductive pickup switch circuit according to claim 1, characterized in that: The first trigger circuit is provided with a first data pin, a first set pin, a first reset pin, a first pulse signal pin, a first original code output terminal and a first inverted code output terminal.

3. The inductive pickup switch circuit according to claim 2, characterized in that: The second trigger circuit is provided with a second data pin, a second set pin, a second reset pin, a second pulse signal pin, a second original code output terminal, a second inverted code output terminal and a trigger digital power pin.

4. The inductive pickup switch circuit according to claim 1, characterized in that: The control circuit is provided with a switch circuit and a display circuit; the switch circuit is provided with a first switch resistor, a second switch resistor, a switch transistor and a switch capacitor; The display circuit is provided with a first display resistor, a second display resistor, a third display resistor, a display triode and a display capacitor.

5. The inductive pickup switch circuit according to claim 1, characterized in that: The chip is provided with a ground line, a chip digital power pin and a charge collection capacitor.

6. The inductive pickup switch circuit according to claim 3, characterized in that: The first pulse signal pin receives a signal from the chip, and the second pulse signal pin receives a signal from the first original code output terminal.

7. The inductive pickup switch circuit according to claim 6, characterized in that: The first data pin converts the level value of the first pulse signal pin into a corresponding digital value in response to the signal of the first pulse signal pin; The second data pin converts the level value of the discharge circuit into a corresponding digital value in response to the signal of the discharge circuit.

8. The inductive pickup switch circuit according to claim 3, characterized in that: When the first setting pin is at a high level, the first original code output terminal and the first inverted code output terminal are flipped; When the second setting pin is at a high level, the second original code output terminal and the second inverted code output terminal are flipped.

9. The inductive pickup switch circuit according to claim 3, characterized in that: When the first reset pin is at a high level, the first original code output terminal and the first inverted code output terminal are flipped to a starting state; When the second reset pin is at a high level, the second original code output terminal and the second inverted code output terminal are flipped to a starting state.

10. The inductive pickup switch circuit according to claim 3, characterized in that: The second inverted code output terminal transmits a signal to the discharge circuit; The second original code output terminal transmits a signal to the control circuit.

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