Air control circuit based on infrared receiving and transmitting

Abstract

The utility model discloses an air control circuit based on infrared transmitting and receiving, and solves the problems that the traditional infrared control circuit is weak in anti-interference capability and the detection distance is not easy to adjust. Comprising an infrared transmitting module and an infrared receiving and detecting module, and the infrared receiving and detecting module receives infrared light transmitted outwards by a transmitting tube in the infrared transmitting module; the infrared emission module is connected with a standard carrier detection module, and the input end of the standard carrier detection module inputs a PWM signal to adjust a driving signal in the infrared emission module; the infrared emission module is used for emitting red light outwards, the infrared receiving detection module receives infrared light, the standard carrier detection module adjusts the duty ratio of PWM to output square waves, a triode is used for driving the square waves to bear signals of the infrared light, infrared interference in natural light is avoided, the circuit structure is simple and stable, and the distance between the air and the distance can be controlled through a high-precision resistor.

Description

Technical Field

[0001] The utility model relates to the field of infrared detection, and particularly relates to a non-contact control circuit based on infrared transceiver. Background Art

[0002] Infrared transceiver control devices mainly work based on the principles of infrared radiation and infrared sensors. The human body surface emits infrared radiation, and when the hand moves, the infrared radiation changes. The infrared sensor can detect this change and convert it into an electrical signal. By processing these electrical signals, the device can recognize gesture actions and convert them into corresponding control instructions. Infrared transceiver control devices allow users to operate without directly touching the device, improving the convenience and hygiene of use. With the continuous development of infrared sensor technology, infrared transceiver control devices can achieve high-precision recognition of gesture actions, improving the accuracy and reliability of control. Infrared transceiver control devices are applicable to a variety of scenarios, such as smart home, industrial automation, medical rehabilitation and other fields, providing users with a more intelligent and convenient interaction method.

[0003] Infrared transceiver control devices still face some technical challenges, such as the influence of lighting conditions on recognition accuracy and the difficulty of gesture recognition in complex environments. The core of infrared light sensing technology is to illuminate the human hand with an infrared LED light source and capture the reflected infrared light to achieve gesture recognition. However, this mechanism performs poorly in environments with large light changes. For example, in strong outdoor light, the infrared light may be severely interfered with, resulting in a decrease in recognition accuracy; while in low-light or dark environments, if the infrared LED light source is not strong enough, it may also affect the recognition effect. Moreover, the recognition range and distance of infrared gesture control devices are relatively limited. Due to the propagation characteristics of infrared light, its recognition distance and range are restricted to a certain extent. For long-distance or large-range gesture control, infrared devices may not be able to accurately capture and recognize gesture actions, thus affecting the user experience.

[0004] An "infrared control circuit and electrical appliance" disclosed in a Chinese patent document, with a public number of CN216900929U, includes a first power supply, a button, an infrared transmitting unit, an infrared receiving unit, a first resistor, a first voltage divider unit, a first switch unit, a second switch unit, a third switch unit, a fourth switch unit and an output port; when the button is pressed, the third switch unit is turned on, the connection between the second end of the infrared transmitting unit and the ground is turned on, and the infrared transmitting unit emits an infrared signal; the infrared receiving unit generates a current signal of corresponding magnitude according to the infrared signal reflected by the obstacle, so that the second end of the first resistor outputs a first signal of corresponding magnitude to the second switch unit; when the first signal is less than the first threshold, the second switch unit is turned on, so that the first voltage divider unit outputs a second signal to the fourth switch unit, thereby turning on the fourth switch unit to connect the first power supply to the output port. Its circuit structure is complex, lacks stability, and the air distance is not easy to control. Summary of the invention

[0005] The utility model mainly solves the problem that the traditional infrared control circuit has weak anti-interference ability and the detection distance is difficult to adjust. The utility model provides an air control circuit based on infrared transceiver, which has a simple and stable circuit structure, low raw material cost, controllable air distance and strong anti-interference ability.

[0006] In order to achieve the above objectives, the following technical solutions are proposed:

[0007] A remote control circuit based on infrared transceiver comprises an infrared emission detection module and an infrared receiving detection module, wherein the infrared receiving detection module receives infrared light emitted outwardly by a transmitting tube in the infrared emission detection module; the infrared emission detection module is connected to a carrier detection module, a PWM signal is inputted into an input end of the carrier detection module to adjust a driving signal in the infrared emission detection module; the on-off of a transistor in the infrared emission detection module is controlled through an I / O port of an MCU, so that a 5V voltage is used to drive the infrared emission tube to emit red light outwardly, and then the duty cycle of PWM is adjusted through the I / O of the MCU to output a 38KHz square wave, which is driven by a transistor to carry a red light signal, and this approach can avoid infrared interference in natural light, improve anti-interference capability and transmission distance; a high-precision resistor is used to control the emission intensity, so that the remote control distance is 20cm~25cm.

[0008] Preferably, the infrared emission detection module includes a first transmitting circuit and a second transmitting circuit with the same structure, the first transmitting circuit and the second transmitting circuit are arranged in parallel, one end of the first transmitting circuit and the second transmitting circuit are connected to a power supply, and the other end of the first transmitting circuit and the second transmitting circuit are connected to a carrier detection module.

[0009] Preferably, the first transmitting circuit is provided with a first transmitting tube IR1 and a resistor R5, and the second transmitting circuit is provided with a second transmitting tube IR2 and a resistor R8; the output end of the resistor R5 is connected to the positive electrode of the first transmitting tube IR1, and the output end of the resistor R8 is connected to the positive electrode of the first transmitting tube IR2; the resistor R5 and the resistor R8 are two high-precision resistors, which are used to control the emission intensity of the infrared transmitting tube, thereby realizing the control of the remote control distance.

[0010] Preferably, the first transmitting circuit includes a transistor Q1, the base of which is connected to the I / O port of the MCU through a resistor R3, and a resistor R4 is connected in parallel between the base and the emitter of the transistor Q1; the second transmitting circuit includes a transistor Q2, the base of which is connected to the I / O port of the MCU through a resistor R6, and a resistor R7 is connected in parallel between the base and the emitter of the transistor Q2; the bases of the transistors Q1 and Q2 receive a control signal from the I / O port of the MCU, and control the current flow between the collector and the emitter by adjusting the base current, thereby driving the first infrared transmitting tube IR1 to emit infrared light.

[0011] Preferably, the standard carrier detection module includes a transistor Q3, the collector of the transistor Q3 is connected to the infrared emission detection module as an input end, the base of the transistor Q3 is connected to the PWM signal through a resistor R35, the base of the transistor Q3 receives a signal from a PWM control unit through a resistor R35, and adjusts the PWM duty cycle through the I / O of the MCU to output a 38KHz square wave, which is driven by the transistor Q3 to carry a red light signal to achieve modulation of the total current passing through the first transmitting tube IR1 and the second transmitting tube IR2, and a resistor R36 is connected in parallel between the base and the collector of the transistor Q3 to provide an emitter voltage reference point for the transistor Q3.

[0012] Preferably, the infrared receiving detection module includes a first detection circuit and a second detection circuit with the same circuit structure, and the first detection circuit is connected in parallel with the second detection circuit, which helps to improve the accuracy and reliability of the received signal and reduce misjudgment through redundant detection.

[0013] Preferably, the first detection circuit includes a first infrared receiving tube RV1 and a second infrared receiving tube RV2. The VCC terminal of the first infrared receiving tube RV1 is connected to the power supply through a pull-up resistor R15. A parallel combination of a capacitor C5 and a capacitor C8 is connected between the VCC terminal and the GND terminal of the first infrared receiving tube RV1. A pull-up resistor R18 is provided at the vout terminal of the first infrared receiving tube RV1. The vout terminal of the first infrared receiving tube RV1 is connected to the first signal receiving port of the MCU through a resistor R20. The second detection circuit has the same circuit structure as the first detection circuit. The VCC terminal of the second infrared receiving tube RV2 is connected to the power supply through a pull-up resistor R16. A parallel combination of a capacitor C6 and a capacitor C9 is connected between the VCC terminal and the GND terminal of the second infrared receiving tube RV2. A pull-up resistor R19 is provided at the vout terminal of the first infrared receiving tube RV2. The vout terminal of the first infrared receiving tube RV2 is connected to the first signal receiving port of the MCU through a resistor R21. Capacitors C5, C8 and capacitors C6, C9 are used to filter out high-frequency noise and high-frequency interference on the power line. Resistors R15 and R16 can ensure that the receiving tube can work within a suitable voltage range, while limiting the current magnitude to protect the receiving tube from being damaged by overcurrent. Resistors R20 and R21 appropriately attenuate the signal voltage output by the receiving tube to adapt to the input voltage range of the MCU, and at the same time provide a certain noise suppression effect.

[0014] Preferably, the input end of the infrared emission detection module is connected to the PWM control unit and the MCU main control module. The input end of the infrared emission detection module receives control signals from the carrier detection module and the MCU main control module, and adjusts the emission strategy according to these signals. The output end of the infrared emission detection module is connected to the infrared reception detection module. The output end of the infrared reception detection module is connected to the MCU main control module to feedback the emission state to the receiving end. The infrared reception detection module generates corresponding electrical signals according to the received infrared signals, and transmits these signals to the MCU main control module through its output end. Description of the Drawings

[0015] As Figure 1 shown is a circuit diagram of the infrared emission detection and carrier detection modules of an infrared transceiver-based air control circuit.

[0016] As Figure 2 shown is a circuit diagram of the infrared reception detection module of an infrared transceiver-based air control circuit.

[0017] As Figure 3 shown is a module connection diagram of the infrared reception detection module of an infrared transceiver-based air control circuit.

[0018] Reference numerals in the drawings: MCU main control module 01; carrier detection module 02; infrared emission detection module 03; infrared reception detection module 04. Detailed implementation manners

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are only a part rather than all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] The specific embodiments of the present invention are as follows.

[0021] The present invention discloses a non-contact control circuit based on infrared transceiver, as Figure 1 、 Figure 2 and Figure 3 shown, which includes an infrared emission detection module 03, a carrier detection module 02, and an infrared reception detection module 04. The input end of the infrared emission detection module 03 is connected to the carrier detection module 02 and the MCU main control module 01. The output end of the infrared emission detection module 03 is connected to the infrared reception detection module 04. The output end of the infrared reception detection module 04 is connected to the MCU main control module 01. The infrared emission detection module 03 includes a first emission circuit and a second emission circuit. The first emission circuit is provided with a first emission tube IR1 and a chip resistor R5. The second emission circuit is provided with a second emission tube IR2 and a chip resistor R8. The carrier module includes a triode Q3 and a PWM control unit. The infrared reception detection module 04 includes a first infrared reception tube RV1 and a second infrared reception tube RV2.

[0022] The first emission circuit turns on or off the infrared first emission tube IR1 through the control signal of the MCU to achieve the emission of infrared signals. It includes a triode Q1. The base of the triode Q1 is respectively connected to a resistor R4 and a resistor R3. The resistor R3 is connected to the I / O port of the MCU. The base receives the control signal sent from the I / O port of the MCU. By adjusting the base current, the current flow between the collector and the emitter is controlled, thereby driving the infrared second emission tube IR1 to emit infrared light outward. When receiving sufficient current drive, the first emission tube IR1 emits infrared light of a specific wavelength for infrared communication or detection. Its luminous intensity is proportional to the magnitude of the current passing through it. The resistor R4 and the emitter of the triode Q1 are connected to the +5V voltage. The resistor R3 serves as a pull-up resistor, connecting the I / O port of the MCU and the base of the triode Q1 to ensure that when the MCU outputs a high level, the base can obtain sufficient positive bias voltage to turn on the triode Q1. The resistor R4 is connected to the +5V voltage source and the emitter of the triode Q1 to provide a stable emitter voltage reference point for the triode Q1. These two resistors together constitute the bias circuit of the triode Q1 to ensure that the triode Q1 can operate at the correct operating point. The collector of the triode Q1 is connected to one end of a resistor R5, and the other end of the resistor R5 is connected to the first emission tube IR1, playing a role in current limiting and protection. It limits the magnitude of the current passing through the first emission tube IR1 to prevent excessive current from damaging the first emission tube IR1 or other components. The resistance value selection of the resistor R5 also ensures the stability and reliability of the circuit.

[0023] The second emission circuit turns on or off the infrared second emitter IR2 through the control signal of the MCU to achieve the emission of infrared signals. It includes a triode Q2. The base of the triode Q2 is respectively connected to a resistor R7 and a resistor R6. The resistor R6 is connected to the I / O port of the MCU. The base receives the control signal sent from the I / O port of the MCU, and controls the current flow between the collector and the emitter by adjusting the base current, so as to drive the infrared second emitter IR2 to emit infrared light outward. When receiving sufficient current drive, the second emitter IR2 will emit infrared light with a specific wavelength for infrared communication or detection. Its luminous intensity is proportional to the magnitude of the current passing through it. The resistor R7 and the emitter of the triode Q1 are connected to the +5V voltage. The resistor R6 serves as a pull-up resistor, connecting the I / O port of the MCU and the base of the triode Q2 to ensure that when the MCU outputs a high level, the base can obtain sufficient positive bias voltage to turn on the triode Q2; the resistor R7 is connected to the +5V voltage source and the emitter of the triode Q2 to provide a stable emitter voltage reference point for the triode Q2. These two resistors together constitute the bias circuit of the triode Q2 to ensure that the triode Q2 can operate at the correct operating point. The collector of the triode Q2 is connected to one end of a resistor R8, and the other end of the resistor R8 is connected to the second emitter IR2, playing a role in current limiting and protection. It limits the magnitude of the current passing through the second emitter IR2 to prevent excessive current from damaging the second emitter IR2 or other components. The resistance value selection of the resistor R8 also ensures the stability and reliability of the circuit.

[0024] The infrared emission detection module 03 includes a triode Q3. The anodes of the first emitter IR1 and the second emitter IR2 are connected in parallel through a wire and then connected to the collector of the triode Q3. The current supply conditions of the two emitters will be controlled simultaneously through the state of the triode Q3; the resistor R35 serves as the input resistor of the PWM signal, connecting the PWM control unit and the base of the triode Q3, and the resistor R36 is connected to GND and the emitter of the triode Q3 to provide an emitter voltage reference point for the triode Q3. These two resistors together constitute a part of the bias circuit of the triode Q3; the triode Q3 receives the signal from the PWM (pulse width modulation) control unit through the resistor R35, adjusts the duty cycle of the PWM through the I / O of the MCU, outputs a square wave of 38KHz, and then drives this square wave with the triode Q3 to carry the signal of red light emission, so as to achieve the modulation of the total current passing through the first emitter IR1 and the second emitter IR2. This modulation method helps to enhance the anti-interference ability and transmission distance of the infrared signal.

[0025] The resistors R5 and R8 ensure the stable operation of the first infrared emitter IR1 and the second infrared emitter IR2. By controlling the on / off states of the transistors Q1 and Q2 through the I / O ports of the MCU, a 5V voltage is used to drive the first infrared emitter IR1 and the second infrared emitter IR2 to emit infrared light outward. Among them, the two high-precision resistors R5 and R8 control the emission intensity, enabling the control of the distance through the air. The control distance through the air can be achieved within the range of 20 cm to 25 cm. In an infrared detection system that requires directional control, the emission states of the first infrared emitter IR1 and the second infrared emitter IR2 can be controlled separately to sense obstacles or targets in different directions, thereby ensuring the stability and reliability of the circuit.

[0026] The power input terminal VCC of the first infrared receiver RV1 is connected to one end of the capacitors C5 and C8 and one end of the resistor R15. The 5V voltage is limited by the resistor R15. The other end of the resistor R15 is connected to the +5V voltage as a power supply resistor, which divides the +5V power supply and supplies it to the VCC terminal of the infrared receiver to ensure that the receiver can operate within an appropriate voltage range, while limiting the current magnitude to protect the receiver from being damaged by overcurrent. The other ends of the capacitors C5 and C8 are connected to the GND terminal of the first infrared receiver RV1 to filter out high-frequency noise and high-frequency interference on the power line and supply power to the device. The output terminal Vout of the first infrared receiver RV1 is respectively connected to one end of the resistors R18 and R20. The other end of the resistor R18 is connected to the +5V voltage as a pull-up resistor, which pulls the inactive state of the output terminal Vout of the first infrared receiver to the high level +5V so that the MCU can identify the presence or absence of a signal. After the infrared device receives a signal, it then outputs the signal to the I / O port of the MCU through the Vout pin. After a series of processes by the MCU, a control signal is finally obtained. The other end of the resistor R20 is connected to the I / O port of the MCU, which appropriately attenuates the signal voltage output by the receiver to adapt to the input voltage range of the MCU and provides a certain noise suppression effect.

[0027] The power input terminal VCC of the second infrared receiving tube RV2, the capacitor C6 and one end of the capacitor C9 are connected to one end of the resistor R16. The 5V voltage is limited by the resistor R16. The other end of the resistor R16 is connected to the +5V voltage as a power supply resistor. After dividing the +5V power supply voltage, it is supplied to the VCC terminal of the infrared receiving tube to ensure that the receiving tube can work within a suitable voltage range. At the same time, the current magnitude is limited to protect the receiving tube from being damaged by overcurrent. The other ends of the capacitor C6 and the capacitor C9 are connected to the GND terminal of the second infrared receiving tube RV2, which is used to filter out high-frequency noise and high-frequency interference on the power line and supply power to the device. The output terminal Vout of the second infrared receiving tube RV2 is respectively connected to one end of the resistor R19 and the resistor R21. The other end of the resistor R19 is connected to the +5V voltage as a pull-up resistor, which pulls the unactivated state of the output terminal Vout of the first infrared receiving tube to the high level +5V so that the MCU can identify the presence or absence of the signal. After the infrared device receives the signal, the signal is output to the I / O port of the MCU through the Vout pin. After a series of processes by the MCU, the control signal is finally obtained. The other end of the resistor R21 is connected to the I / O port of the MCU, which appropriately attenuates the signal voltage output by the receiving tube to adapt to the input voltage range of the MCU and provides a certain noise suppression effect.

[0028] When the infrared emission source emits infrared signals, these signals will be captured by the first infrared receiving tube RV1 or the second infrared receiving tube RV2. After the photosensitive diodes inside the first infrared receiving tube RV1 or the second infrared receiving tube RV2 receive the infrared light, current changes will occur, and then a voltage difference will be generated at the output terminal Vout. This voltage difference is attenuated to a voltage range that the MCU can identify after passing through the voltage dividing circuit composed of the resistors R18, R19, R20, and R21. At the same time, the capacitors C8 and C9 filter the signal to remove high-frequency noise interference and ensure the purity of the signal. The MCU monitors the voltage changes at the output terminals of the first infrared receiving tube RV1 and the second infrared receiving tube RV2 in real time through its I / O port. When an effective signal is detected, that is, the voltage change exceeds the allowable threshold, the MCU will start the internal interrupt service program or polling program to read the signal content and perform corresponding operations according to the signal encoding.

[0029] The specific working process of the present utility model is as follows: By controlling the on / off of the triodes Q1 and Q2 in the infrared emission detection module 03 through the I / O port of the MCU, the 5V voltage is used to drive the first emitter IR1 and the second emitter IR2 to emit infrared light outward. Among them, the two high-precision resistors, resistor R5 and resistor R8, control the emission intensity, thereby realizing the control of the distance in the air, and the air control distance can be realized within 20 cm to 25 cm. By adjusting the duty cycle of the PWM through the I / O of the MCU, a square wave of 38KHz is output, and then the square wave is driven by the triode Q3 to carry the signal of the red light emission. This method can avoid the infrared interference in natural light, improve the anti-interference ability and the transmission distance; in the infrared reception detection module 04, the 5V voltage is limited by the resistor R16, and the capacitors C5, C8 and the capacitors C6, C9 are used for filtering and powering the device. After the infrared device receives the signal, the signal is output to the I / O port of the MCU through the Vout pin, and after a series of processing by the MCU, the control signal is finally obtained to execute the corresponding instruction.

[0030] The beneficial effects of the present utility model are as follows: The present utility model provides a wireless control circuit based on infrared transceiver, including an infrared emission detection module 03, a carrier detection module 02, and an infrared reception detection module 04. The infrared emission detection module 03 includes a first emission circuit and a second emission circuit. The first emission circuit is provided with a first emitter IR1 and a chip resistor R5, and the second emission circuit is provided with a second emitter IR2 and a chip resistor R8; the carrier module includes a triode Q3 and a PWM control unit; the infrared reception detection module 04 includes a first infrared receiver RV1 and a second infrared receiver RV2. By controlling the on / off of the triodes Q1 and Q2 through the I / O port of the MCU, the 5V voltage is used to drive the first emitter IR1 and the second IR2 to emit infrared light outward. Among them, the two high-precision resistors, resistor R5 and resistor R8, control the emission intensity, and the control of the distance in the air can be realized, and the air control distance can be realized within 20 cm to 25 cm; by adjusting the duty cycle of the PWM through the I / O of the MCU, a square wave of 38KHz is output, and then the square wave is driven by the triode Q3 to carry the signal of the red light emission. This method can avoid the infrared interference in natural light, improve the anti-interference ability and the transmission distance. In an infrared detection system that needs to realize directional control, the emission states of the first emitter IR1 and the second emitter IR2 can be controlled respectively to sense obstacles or targets in different directions, thereby ensuring the stability and reliability of the circuit.

[0031] The present utility model is not limited to the specific technical solutions described in the above embodiments. In addition to the above embodiments, the present utility model may also have other implementation manners. For those skilled in the art, any technical solutions formed by making any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A remote control circuit based on infrared transceiver, characterized in that: It includes an infrared emission detection module and an infrared receiving detection module. The infrared receiving detection module receives the infrared light sent outward by the transmitting tube in the infrared emission detection module. The infrared emission detection module is connected to a carrier detection module. The input end of the carrier detection module inputs a PWM signal to adjust the driving signal in the infrared emission detection module.

2. The remote control circuit based on infrared transceiver according to claim 1, characterized in that: The infrared emission detection module includes a first emission circuit and a second emission circuit with the same structure. The first emission circuit and the second emission circuit are arranged in parallel. One end of the first emission circuit and the second emission circuit is connected to a power supply, and the other end of the first emission circuit and the second emission circuit is connected to a carrier detection module.

3. The remote control circuit based on infrared transceiver according to claim 2, characterized in that: The first transmitting circuit is provided with a first transmitting tube IR1 and a resistor R5, and the second transmitting circuit is provided with a second transmitting tube IR2 and a resistor R8; the output end of the resistor R5 is connected to the positive electrode of the first transmitting tube IR1, and the output end of the resistor R8 is connected to the positive electrode of the first transmitting tube IR2.

4. The remote control circuit based on infrared transceiver according to claim 2 or 3, characterized in that: The first transmitting circuit includes a transistor Q1, the base of which is connected to the I / O port of the MCU through a resistor R3, and a resistor R4 is connected in parallel between the base and the emitter of the transistor Q1. The second transmitting circuit includes a transistor Q2, the base of which is connected to the I / O port of the MCU through a resistor R6, and a resistor R7 is connected in parallel between the base and the emitter of the transistor Q2.

5. The remote control circuit based on infrared transceiver according to claim 1 or 2, characterized in that: The carrier detection module includes a transistor Q3, the collector of the transistor Q3 is connected to the infrared emission detection module as an input end, the base of the transistor Q3 is connected to the PWM signal through a resistor R35, and a resistor R36 is connected in parallel between the base and collector of the transistor Q3.

6. The remote control circuit based on infrared transceiver according to claim 1 or 2, characterized in that: The infrared receiving detection module comprises a first detection circuit and a second detection circuit with the same circuit structure, and the first detection circuit is connected in parallel with the second detection circuit.

7. The remote control circuit based on infrared transceiver according to claim 6, characterized in that: The first detection circuit includes a first infrared receiving tube RV1 and a second infrared receiving tube RV2. The VCC end of the first infrared receiving tube RV1 is connected to the power supply through a pull-up resistor R15. The VCC end and the GND end of the first infrared receiving tube RV1 are connected to capacitors C5 and C8 in parallel. The vout end of the first infrared receiving tube RV1 is provided with a pull-up resistor R18. The vout end of the first infrared receiving tube RV1 is connected to the first signal receiving port of the MCU through a resistor R20.

8. The remote control circuit based on infrared transceiver according to claim 1, characterized in that: The input end of the infrared emission detection module is connected to the carrier detection module and the MCU main control module, the output end of the infrared emission detection module is connected to the infrared receiving detection module, and the output end of the infrared receiving detection module is connected to the MCU main control module.

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