A code reading system for Navier code

Abstract

The present invention provides a code reading system for a Navier code, which can realize the reading of the Navier code; the system comprises a control unit, an operation unit, a conversion unit and a USB interface unit; the control unit is used to store received data information; the operation unit is electrically connected between the control unit and the conversion unit, and is used to complete photoelectric conversion of the data information stored in the control unit, and change the data information into a corresponding data signal; the conversion unit is electrically connected to the operation unit, and is used to complete decoding of the data signal output by the operation unit, and realize data transmission to a terminal device; the USB interface unit is electrically connected to the control unit, and is used to send the information output by the control unit to the terminal device.

Description

Technical Field

[0001] The present invention relates to the technical field of Nano-code, and in particular to a code reading system for Nano-code. Background Art

[0002] Nano-code technology is a new generation of digital identification technology that integrates nanomaterial technology, photonic technology and information technology. It carries data on nano-microcrystalline materials, forms a fusion mark on the surface of the object, and then uses special optical means to quickly identify the data. Simply put, it changes the encoding and printing methods of barcodes and QR codes in the past, replaces ordinary printing materials with nano-ink made of nano-materials, turns flat printing points into three-dimensional luminous points, carries data through optical encoding, and uses special optical means for rapid identification.

[0003] Compared with traditional coding, the advantages of nanocode printed with new materials are obvious. First, it is attached to the object and is almost invisible. The minimum size can reach 2-3 mm, and it does not affect the structure of the object itself. Secondly, it is stable in nature. The characteristics of optical materials determine that nanocode will not disappear for at least 100 years under existing technical conditions. It can withstand the test of various environments including high temperature, running water, cutting, grinding, welding, etc. The most important thing is safety. At present, the arrangement and combination of photons cannot be copied, which is equivalent to an object having only one ID card. These characteristics of nanocode meet the multi-faceted needs of industrial-level Internet of Things applications in production, circulation, storage and cost control for sensing technology.

[0004] Since the Nano-code is made of nano-materials and cannot be seen by naked eyes, it can only be scanned and identified by special scanning equipment. The present invention aims to provide a Nano-code reading system for reading the Nano-code. Summary of the invention

[0005] In view of the above problems, the present invention provides a code reading system for Nano-code, which can realize the reading of Nano-code.

[0006] The technical solution is as follows: a code reading system for Navier code, characterized in that it includes a control unit, a calculation unit, a conversion unit, and a USB interface unit;

[0007] The control unit is used to store the received data information;

[0008] The computing unit is electrically connected between the control unit and the conversion unit, and is used to complete the photoelectric conversion of the data information stored in the control unit, and change the data information into a corresponding data signal;

[0009] The conversion unit is electrically connected to the operation unit and is used to decode the data signal output by the operation unit and transmit the data to the terminal device;

[0010] The USB interface unit is electrically connected to the control unit and is used to send the information output by the control unit to the terminal device.

[0011] It is further characterized by:

[0012] The control unit includes a controller U1, resistors R1 to R7, capacitors C1 to C10, an inverter U3, and an inductor L1; one end of the capacitors C5, C6, and resistor R2 are connected to pins 5, 6, and 7 of the controller U1 and then connected to a voltage input terminal Vin, the other end of the resistor R2 and one end of the capacitor C8 are both connected to pin 4 of the controller U1, and the other ends of the capacitors C5, C6, and C8 are connected to ground; pin 1 of the inverter U3 is connected to a power supply Vcc, and pin 4 of the inverter U3 is connected to pin 3 of the controller U1; one end of the capacitor C4 and resistor R4 are connected to pin 3 of the inverter U3 and then grounded, and the other ends of the capacitor C4 and resistor R4 are connected to pins 2 and 1 of the controller U1 respectively; pin 0, Pins 8, 9, 10, and 20 are connected to ground; pins 11, 12, 13, 14, 15, and 16 of the controller U1 are connected to one end of the inductor L1, one end of the capacitors C1, C2, C3, C7, and the resistor R1 are connected to one end of the inductor L1 and then connected to the power supply V1d+, the other ends of the capacitors C1, C2, and C3 are connected to ground, the other end of the capacitor C7 is connected to one end of the resistor R3, one end of the capacitors C9 and C10 are connected to pin 18 of the controller U1, the capacitor C9, the other ends of the resistors R1 and R3, one end of the resistors R5, R6, and R7, and pin 19 of the controller U1 are all connected, the capacitor C10 is connected to the other end of the resistor R5, and the other end of the resistor R7 is grounded;

[0013] The operation unit includes amplifiers U2A, U2B, light-emitting diode D1, capacitors C11, C12, and resistors R8~R11; the positive electrode of the light-emitting diode D1 is connected to the power supply V1d+, the negative electrode of the light-emitting diode D1 is connected to one end of the resistor R11 and pin 3 of the amplifier U2A, one end of the resistors R8 and R9 are connected and then connected to pin 2 of the amplifier U2A, the other ends of the resistors R9 and R11 are connected and then grounded, pin 4 of the amplifier U2A is grounded, the other end of the resistor R8 is connected to pin 1 of the amplifier U2A and pin 5 of the amplifier U2B, one end of the capacitor C12 is connected to pin 8 of the amplifier U2A and then connected to the power supply Vcc, the other end of the capacitor C12 is grounded, one end of the resistor R10 and capacitor C11 are connected and then connected to pin 6 of the amplifier U2B, the other end of the capacitor C11 and resistor R6 and pin 7 of the amplifier U2B are all connected;

[0014] The conversion unit includes a micro converter U4, resistors R12-R14, capacitors C13-C16, a crystal oscillator X1, a voltage regulator D2, an electrolytic capacitor EC1, and an inductor L2; one end of the resistor R12 is connected to the 2nd pin of the micro converter U4 and then connected to the 2nd pin of the interface J1, the other end of the resistor R12 is connected to the power supply Vcc, the 22nd pin of the micro converter U4 is connected to the 2nd pin of the inverter U3, the 3rd and 4th pins of the micro converter U4 are respectively connected to the 1st and 2nd pins of the interface J2, the 3rd pin of the interface J2 is grounded, the 5th pin of the micro converter U4 is connected to the resistor R13 and then connected to the power supply Vcc, and is connected to the 3rd pin of the interface J3, the 2nd pin of the interface J3 is connected to the 9th pin of the micro converter U4, and the 1st pin of the interface J3 is grounded; the 20th pin of the micro converter U4 is connected to the other end of the resistor R10, the 19th pin of the micro converter U4 is connected to the power supply V1d+, and the 18th pin of the micro converter U4 is connected to the amplifier The 5th pin of U2B, the 17th pin of the micro converter U4 is connected to the capacitor C14 and then to ground, the 16th pin of the micro converter U4 is connected to the capacitor C13 and then to ground; the two ends of the crystal oscillator X1 are respectively connected to the 26th and 27th pins of the micro converter U4, the 1st, 14th and 15th pins of the micro converter U4 are connected and then to ground, the inductor L2 and one end of the capacitor C15 are connected and then to the 13th pin of the micro converter U4, the 28th pin of the micro converter U4 and the negative pole of the voltage regulator tube D2 are connected. The positive electrode of the voltage regulator tube D2 is connected to the voltage input terminal Vin, the 2nd pin of the interface J4 is connected to one end of the resistor R14, the other end of the resistor R14 is connected to the positive electrode of the electrolytic capacitor EC1 and then connected to the voltage input terminal Vin, the negative electrode of the electrolytic capacitor EC1 is connected to the 1st pin of the interface J4 and then connected to the ground;

[0015] The USB interface unit includes a transistor IC1, a demultiplexer IC2, resistors R15-R24, a capacitor C17, and a buzzer LS1; the 3rd pin of the demultiplexer IC2 and one end of the capacitor C17 are connected and then grounded, the 8th and 10th pins of the demultiplexer IC2 and the other end of the capacitor C17 are connected and then connected to a power supply 5V, the 6th and 9th pins of the demultiplexer IC2 are connected and then grounded through the resistor R15; one end of the resistors R17 and R18 are connected and then connected to the 2nd pin of the demultiplexer IC2, and the other end of the resistor R18 is connected. The other end of the resistor R17 is connected to the 5th pin of the transistor IC1, the 4th pin of the transistor IC1 is grounded, the 6th pin of the transistor IC1 is connected to the power supply 5V through the resistor R16, and is connected to the 1st pin of the demultiplexer IC2, the 3rd pin of the transistor IC1 is connected to the 2nd pin of the buzzer LS1, the 1st pin of the buzzer LS1 and the 1st pin of the transistor IC1 are both grounded, the 4th pin of the interface J6 is connected to one end of the resistor R19 and the 2nd pin of the transistor IC1, the other end of the resistor R19 is connected to the The power supply 5V, the 1st and 3rd pins of the interface J6 are connected and then grounded, the 2nd pin of the interface J6 and the 5th pin of the interface J5 are connected to one end of the resistor R20, the 3rd pin of the interface J5 is connected to one end of the resistor R21 and is connected to the 5th pin of the demultiplexer IC2, the other ends of the resistors R20 and R21 are connected and then connected to the power supply 5V, the 1st pin of the interface J5 is connected to the power supply 5V, the 2nd, 4th and 6th pins of the interface J5 are connected and then grounded; the 1st pins of the interfaces J8 and J9 are both connected to the power supply 5V, the Pin 4 is grounded, pins 4, 5, and 6 of the interface J9 are connected and then grounded, pins 2 and 3 of the interface J8 are respectively connected to pins 2 and 3 of the interface J9, and are both connected to pins 32 and 33 of the controller U1, pin 2 of the interface J7 is grounded, pin 1 of the interface J7 is connected to pin 4 of the demultiplexer IC2 via the resistor R22, pin 3 of the interface J7 is connected to pin 7 of the demultiplexer IC2 via the resistor R23, and pin 4 of the interface J7 is connected to pin 2 of the demultiplexer IC2 via the resistor R24;

[0016] The model of the controller U1 is STM32; the model of the inverter U3 is SN74LVC1G04; the models of the amplifiers U2A and U2B are both LM358;

[0017] The model of the micro converter U4 is AduC814ARU; the interface J1 is a DLEN interface, the interface J2 is a UART interface, the interface J3 is an IO interface, and the interface J4 is a POW interface;

[0018] The model of the transistor IC1 is PUMX1; the model of the demultiplexer IC2 is IC_TS5A23159DGST; the interfaces J5, J6, J7 and J8 are all CON serial ports, and the interface J9 is a USB interface.

[0019] The beneficial effect of the present invention is that after the control unit saves the received Navier code data information signal, the data information is photoelectrically converted by the operation unit to change the data information into a corresponding data signal, and then the data signal is transmitted to the conversion unit to complete decoding, and the decoded data is transmitted to the terminal device to realize the reading of the Navier code. At the same time, the Navier code data information received by the control unit can be directly transmitted to the terminal device through the USB interface unit, which can ensure security and convenience of use, and also ensure the stability of data transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural block diagram of the present invention;

[0021] Figure 2 is the circuit schematic diagram of the control unit;

[0022] Figure 3 is the circuit schematic diagram of the operation unit;

[0023] Figure 4 is the circuit schematic diagram of the conversion unit;

[0024] Figure 5 This is the circuit schematic diagram of the USB interface unit. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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.

[0026] like Figure 1 to Figure 5 As shown, a code reading system for Navier code of the present invention comprises a control unit 1, a computing unit 2, a conversion unit 3, and a USB interface unit 4;

[0027] Control unit 1, used to store the received data information;

[0028] The computing unit 2 is electrically connected between the control unit 1 and the conversion unit 3, and is used to complete the photoelectric conversion of the data information stored in the control unit 1, and change the data information into a corresponding data signal;

[0029] The conversion unit 3 is electrically connected to the operation unit 2 and is used to decode the data signal output by the operation unit 2 and transmit the data to the terminal device 5;

[0030] The USB interface unit 4 is electrically connected to the control unit 1 and is used to send the information output by the control unit 1 to the terminal device 5 .

[0031] The control unit 1 includes a controller U1, resistors R1 to R7, capacitors C1 to C10, an inverter U3, and an inductor L1; one end of the capacitors C5, C6, and resistor R2 are connected to the 5th, 6th, and 7th pins of the controller U1 and then connected to the voltage input terminal Vin, the other end of the resistor R2 and one end of the capacitor C8 are both connected to the 4th pin of the controller U1, and the other ends of the capacitors C5, C6, and C8 are connected and then grounded; the 1st pin of the inverter U3 is connected to the power supply Vcc, the 4th pin of the inverter U3 is connected to the 3rd pin of the controller U1, one end of the capacitor C4 and resistor R4 are connected to the 3rd pin of the inverter U3 and then grounded, and the other ends of the capacitor C4 and resistor R4 are respectively connected to the 2nd and 1st pins of the controller U1; the 0th pin of the controller U1 , 8, 9, 10, and 20 pins are connected to ground; pins 11, 12, 13, 14, 15, and 16 of the controller U1 are connected to one end of the inductor L1, one end of the capacitors C1, C2, C3, C7, and the resistor R1 are connected to one end of the inductor L1 and then connected to the power supply V1d+, the other ends of the capacitors C1, C2, and C3 are connected to ground, the other end of the capacitor C7 is connected to one end of the resistor R3, one ends of the capacitors C9 and C10 are connected to pin 18 of the controller U1, the capacitor C9, the other ends of the resistors R1 and R3, one ends of the resistors R5, R6, and R7, and pin 19 of the controller U1 are all connected, the capacitor C10 is connected to the other end of the resistor R5, and the other end of the resistor R7 is grounded.

[0032] The operation unit 2 includes amplifiers U2A, U2B, a light-emitting diode D1, capacitors C11, C12, and resistors R8~R11; the positive electrode of the light-emitting diode D1 is connected to the power supply V1d+, the negative electrode of the light-emitting diode D1 is connected to one end of the resistor R11 and the 3rd pin of the amplifier U2A, one ends of the resistors R8 and R9 are connected and then connected to the 2nd pin of the amplifier U2A, the other ends of the resistors R9 and R11 are connected and then grounded, the 4th pin of the amplifier U2A is grounded, the other end of the resistor R8 is connected to the 1st pin of the amplifier U2A and the 5th pin of the amplifier U2B, one end of the capacitor C12 is connected to the 8th pin of the amplifier U2A and then connected to the power supply Vcc, the other end of the capacitor C12 is grounded, the resistor R10 and one end of the capacitor C11 are connected and then connected to the 6th pin of the amplifier U2B, the capacitor C11, the other end of the resistor R6, and the 7th pin of the amplifier U2B are all connected.

[0033] The conversion unit 3 includes a micro converter U4, resistors R12-R14, capacitors C13-C16, a crystal oscillator X1, a voltage regulator D2, an electrolytic capacitor EC1, and an inductor L2; one end of the resistor R12 is connected to the 2nd pin of the micro converter U4 and then connected to the 2nd pin of the interface J1, the other end of the resistor R12 is connected to the power supply Vcc, the 22nd pin of the micro converter U4 is connected to the 2nd pin of the inverter U3, the 3rd and 4th pins of the micro converter U4 are respectively connected to the 1st and 2nd pins of the interface J2, the 3rd pin of the interface J2 is grounded, the 5th pin of the micro converter U4 is connected to the resistor R13 and then connected to the power supply Vcc, and is connected to the 3rd pin of the interface J3, the 2nd pin of the interface J3 is connected to the 9th pin of the micro converter U4, and the 1st pin of the interface J3 is grounded; the 20th pin of the micro converter U4 is connected to the other end of the resistor R10, the 19th pin of the micro converter U4 is connected to the power supply V1d+, and the 18th pin of the micro converter U4 is connected to the amplifier Pin 5 of U2B and pin 17 of micro converter U4 are connected to capacitor C14 and then to ground, and pin 16 of micro converter U4 is connected to capacitor C13 and then to ground; the two ends of crystal oscillator X1 are respectively connected to pins 26 and 27 of micro converter U4, pins 1, 14, and 15 of micro converter U4 are connected and then to ground, inductor L2 and one end of capacitor C15 are connected and then to pin 13 of micro converter U4, pin 28 of micro converter U4, the negative electrode of voltage regulator D2, the other end of inductor L2, and one end of capacitor C16 are all connected and then to power supply Vcc, the other ends of capacitors C15 and C16 are connected and then to ground, the positive electrode of voltage regulator D2 is connected to voltage input terminal Vin, pin 2 of interface J4 is connected to one end of resistor R14, the other end of resistor R14 is connected to the positive electrode of electrolytic capacitor EC1 and then to voltage input terminal Vin, and the negative electrode of electrolytic capacitor EC1 is connected to pin 1 of interface J4 and then to ground.

[0034] The model of controller U1 is STM32; the model of inverter U3 is SN74LVC1G04; the models of amplifiers U2A and U2B are both LM358; the model of microconverter U4 is AduC814ARU; interface J1 is DLEN interface, interface J2 is UART interface, interface J3 is IO interface, and interface J4 is POW interface; terminal device 5 adopts PC and other devices; power supply V1d+ adopts 1.8V~5V power supply.

[0035] The USB interface unit 4 includes a transistor IC1, a demultiplexer IC2, resistors R15-R24, a capacitor C17, and a buzzer LS1; the 3rd pin of the demultiplexer IC2 and one end of the capacitor C17 are connected and then grounded, the 8th and 10th pins of the demultiplexer IC2 and the other end of the capacitor C17 are connected and then connected to a power supply 5V, the 6th and 9th pins of the demultiplexer IC2 are connected and then grounded through the resistor R15; one end of the resistors R17 and R18 are connected and then connected to the 2nd pin of the demultiplexer IC2 , the other end of resistor R18 is grounded, the other end of resistor R17 is connected to pin 5 of transistor IC1, pin 4 of transistor IC1 is grounded, pin 6 of transistor IC1 is connected to power supply 5V through resistor R16, and is connected to pin 1 of demultiplexer IC2, pin 3 of transistor IC1 is connected to pin 2 of buzzer LS1, pin 1 of buzzer LS1 and pin 1 of transistor IC1 are both grounded, pin 4 of interface J6 is connected to one end of resistor R19 and pin 2 of transistor IC1, resistor R19 The other end of the interface is connected to the power supply 5V, the 1st and 3rd pins of the interface J6 are connected and then grounded, the 2nd pin of the interface J6 and the 5th pin of the interface J5 are connected to one end of the resistor R20, the 3rd pin of the interface J5 is connected to one end of the resistor R21 and is connected to the 5th pin of the demultiplexer IC2, the other ends of the resistors R20 and R21 are connected and then connected to the power supply 5V, the 1st pin of the interface J5 is connected to the power supply 5V, the 2nd, 4th and 6th pins of the interface J5 are connected and then grounded; the 1st pins of the interfaces J8 and J9 are connected to the power supply 5V, and the interface J Pin 4 of interface J8 is grounded, pins 4, 5, and 6 of interface J9 are connected and then grounded, pins 2 and 3 of interface J8 are respectively connected to pins 2 and 3 of interface J9, and are all connected to pins 32 and 33 of controller U1, pin 2 of interface J7 is grounded, pin 1 of interface J7 is connected to pin 4 of demultiplexer IC2 via resistor R22, pin 3 of interface J7 is connected to pin 7 of demultiplexer IC2 via resistor R23, and pin 4 of interface J7 is connected to pin 2 of demultiplexer IC2 via resistor R24.

[0036] The model of transistor IC1 is PUMX1; the model of demultiplexer IC2 is IC_TS5A23159DGST; interfaces J5, J6, J7, and J8 are all CON serial ports, and interface J9 is a USB interface.

[0037] The USB interface unit 4 is connected to the terminal device 5. When scanning the code, it is determined whether the control unit 1 is connected to the terminal device 5 through the USB interface unit 4. If connected, the Navier code data information received by the control unit 1 can be transmitted to the terminal device 5 through the USB interface unit 4 for storage, so as to reduce the consumption of the control unit 1's own memory, thereby improving the speed and stability of data transmission. If not connected, the data information is saved to the control unit 1, and then the data is decoded, and the decoded data is transmitted to the terminal device 5, finally realizing the reading of the Navier code.

Claims

1. A code reading system for Navier code, characterized in that: It includes a control unit, a computing unit, a conversion unit, and a USB interface unit; The control unit is used to store the received data information; The computing unit is electrically connected between the control unit and the conversion unit, and is used to complete the photoelectric conversion of the data information stored in the control unit, and change the data information into a corresponding data signal; The conversion unit is electrically connected to the operation unit and is used to decode the data signal output by the operation unit and transmit the data to the terminal device; The USB interface unit is electrically connected to the control unit and is used to send the information output by the control unit to the terminal device; The control unit includes a controller U1, resistors R1 to R7, capacitors C1 to C10, an inverter U3, and an inductor L1; one end of the capacitors C5, C6, and resistor R2 are connected to pins 5, 6, and 7 of the controller U1 and then connected to a voltage input terminal Vin, the other end of the resistor R2 and one end of the capacitor C8 are both connected to pin 4 of the controller U1, and the other ends of the capacitors C5, C6, and C8 are connected to ground; pin 1 of the inverter U3 is connected to a power supply Vcc, and pin 4 of the inverter U3 is connected to pin 3 of the controller U1; one end of the capacitor C4 and resistor R4 are connected to pin 3 of the inverter U3 and then grounded, and the other ends of the capacitor C4 and resistor R4 are connected to pins 2 and 1 of the controller U1 respectively; pin 0, Pins 8, 9, 10, and 20 are connected to ground; pins 11, 12, 13, 14, 15, and 16 of the controller U1 are connected to one end of the inductor L1, one end of the capacitors C1, C2, C3, C7, and the resistor R1 are connected to one end of the inductor L1 and then connected to the power supply V1d+, the other ends of the capacitors C1, C2, and C3 are connected to ground, the other end of the capacitor C7 is connected to one end of the resistor R3, one end of the capacitors C9 and C10 are connected to pin 18 of the controller U1, the capacitor C9, the other ends of the resistors R1 and R3, one end of the resistors R5, R6, and R7, and pin 19 of the controller U1 are all connected, the capacitor C10 is connected to the other end of the resistor R5, and the other end of the resistor R7 is grounded; The operation unit includes amplifiers U2A, U2B, light-emitting diode D1, capacitors C11, C12, and resistors R8~R11; the positive electrode of the light-emitting diode D1 is connected to the power supply V1d+, the negative electrode of the light-emitting diode D1 is connected to one end of the resistor R11 and pin 3 of the amplifier U2A, one end of the resistors R8 and R9 are connected and then connected to pin 2 of the amplifier U2A, the other ends of the resistors R9 and R11 are connected and then grounded, pin 4 of the amplifier U2A is grounded, the other end of the resistor R8 is connected to pin 1 of the amplifier U2A and pin 5 of the amplifier U2B, one end of the capacitor C12 is connected to pin 8 of the amplifier U2A and then connected to the power supply Vcc, the other end of the capacitor C12 is grounded, one end of the resistor R10 and capacitor C11 are connected and then connected to pin 6 of the amplifier U2B, the other end of the capacitor C11 and resistor R6 and pin 7 of the amplifier U2B are all connected; The conversion unit includes a micro converter U4, resistors R12-R14, capacitors C13-C16, a crystal oscillator X1, a voltage regulator D2, an electrolytic capacitor EC1, and an inductor L2; one end of the resistor R12 is connected to pin 2 of the micro converter U4 and then connected to pin 2 of the interface J1, the other end of the resistor R12 is connected to the power supply Vcc, pin 22 of the micro converter U4 is connected to pin 2 of the inverter U3, pins 3 and 4 of the micro converter U4 are respectively connected to pins 1 and 2 of the interface J2, pin 3 of the interface J2 is grounded, pin 5 of the micro converter U4 is connected to the resistor R13 and then connected to the power supply Vcc and connected to pin 3 of the interface J3, pin 2 of the interface J3 is connected to pin 9 of the micro converter U4, and pin 1 of the interface J3 is grounded; The pin 20 of the micro converter U4 is connected to the other end of the resistor R10, the pin 19 of the micro converter U4 is connected to the power supply V1d+, the pin 18 of the micro converter U4 is connected to the pin 5 of the amplifier U2B, the pin 17 of the micro converter U4 is connected to the capacitor C14 and then to ground, and the pin 16 of the micro converter U4 is connected to the capacitor C13 and then to ground; the two ends of the crystal oscillator X1 are respectively connected to the pins 26 and 27 of the micro converter U4, the pins 1, 14, and 15 of the micro converter U4 are connected and then to ground, and one end of the inductor L2 and the capacitor C15 are connected and then to ground. At pin 13 of the micro converter U4, pin 28 of the micro converter U4, the negative electrode of the voltage regulator D2, the other end of the inductor L2, and one end of the capacitor C16 are all connected and then connected to the power supply Vcc, the other ends of the capacitors C15 and C16 are connected and then grounded, the positive electrode of the voltage regulator D2 is connected to the voltage input terminal Vin, pin 2 of the interface J4 is connected to one end of the resistor R14, the other end of the resistor R14 is connected to the positive electrode of the electrolytic capacitor EC1 and then connected to the voltage input terminal Vin, and the negative electrode of the electrolytic capacitor EC1 is connected to pin 1 of the interface J4 and then grounded; The USB interface unit includes a transistor IC1, a demultiplexer IC2, resistors R15-R24, a capacitor C17, and a buzzer LS1; the 3rd pin of the demultiplexer IC2 and one end of the capacitor C17 are connected and then grounded, the 8th and 10th pins of the demultiplexer IC2 and the other end of the capacitor C17 are connected and then connected to a power supply 5V, the 6th and 9th pins of the demultiplexer IC2 are connected and then grounded through the resistor R15; one end of the resistors R17 and R18 are connected and then connected to the 2nd pin of the demultiplexer IC2, and the other end of the resistor R18 is connected. The other end of the resistor R17 is connected to the 5th pin of the transistor IC1, the 4th pin of the transistor IC1 is grounded, the 6th pin of the transistor IC1 is connected to the power supply 5V through the resistor R16, and is connected to the 1st pin of the demultiplexer IC2, the 3rd pin of the transistor IC1 is connected to the 2nd pin of the buzzer LS1, the 1st pin of the buzzer LS1 and the 1st pin of the transistor IC1 are both grounded, the 4th pin of the interface J6 is connected to one end of the resistor R19 and the 2nd pin of the transistor IC1, the other end of the resistor R19 is connected to the The power supply 5V, the 1st and 3rd pins of the interface J6 are connected and then grounded, the 2nd pin of the interface J6 and the 5th pin of the interface J5 are connected to one end of the resistor R20, the 3rd pin of the interface J5 is connected to one end of the resistor R21 and is connected to the 5th pin of the demultiplexer IC2, the other ends of the resistors R20 and R21 are connected and then connected to the power supply 5V, the 1st pin of the interface J5 is connected to the power supply 5V, the 2nd, 4th and 6th pins of the interface J5 are connected and then grounded; the 1st pins of the interfaces J8 and J9 are both connected to the power supply 5V, the Pin 4 is grounded, pins 4, 5, and 6 of the interface J9 are connected and then grounded, pins 2 and 3 of the interface J8 are respectively connected to pins 2 and 3 of the interface J9, and are both connected to pins 32 and 33 of the controller U1, pin 2 of the interface J7 is grounded, pin 1 of the interface J7 is connected to pin 4 of the demultiplexer IC2 via the resistor R22, pin 3 of the interface J7 is connected to pin 7 of the demultiplexer IC2 via the resistor R23, and pin 4 of the interface J7 is connected to pin 2 of the demultiplexer IC2 via the resistor R24; The model of the controller U1 is STM32; the model of the inverter U3 is SN74LVC1G04; the models of the amplifiers U2A and U2B are both LM358; The model of the micro converter U4 is AduC814ARU; the interface J1 is a DLEN interface, the interface J2 is a UART interface, the interface J3 is an IO interface, and the interface J4 is a POW interface; The model of the transistor IC1 is PUMX1; the model of the demultiplexer IC2 is IC_TS5A23159DGST; the interfaces J5, J6, J7 and J8 are all CON serial ports, and the interface J9 is a USB interface.

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