Multi-interface communication and control unit circuit for engineering machinery

Abstract

A multi-interface communication and control unit circuit for engineering machinery is characterized by comprising a microcontroller, a data acquisition and control circuit, a multi-interface remote communication circuit and a power supply circuit, the microcontroller exchanges data with field equipment and a sensor through the data acquisition and control circuit, so that data acquisition and equipment control are realized; and the microcontroller communicates with a cloud platform through the multi-interface remote communication circuit, so that remote transmission and real-time monitoring of data are realized.

Description

Technical Field

[0001] The present invention relates to the field of construction technology and information management, and specifically to a multi-interface communication and control unit circuit for engineering machinery data acquisition, which aims to achieve efficient connection with sensors of various communication interfaces at a construction site, provide comprehensive on-site equipment control capabilities, and interact with a cloud platform for data through various communication methods. Background Art

[0002] At construction sites, various engineering machinery and sensor equipment usually have different communication interfaces and data transmission protocols, which increases the difficulty of data collection and equipment control. At the same time, real-time monitoring of on-site equipment status and remote communication with cloud platforms are also important requirements for current construction information management. However, existing communication and control units often cannot meet these diverse requirements. Summary of the invention

[0003] The present invention provides a multi-interface communication and control unit circuit for engineering machinery data acquisition, and its main features include: multi-interface communication capability, the circuit can support a variety of different communication interfaces, such as RS485 bus interface, CAN bus interface, wireless LORA interface, etc., so as to achieve seamless connection with a variety of sensors and equipment at the construction site; comprehensive control capability, the circuit is designed with switch input and output ports as well as analog input and output ports, so that users can comprehensively control the on-site equipment through the unit; diverse communication methods: the circuit supports communication with the cloud platform through a router with an RJ45 interface, wireless 4G network, WiFi, etc., realizing remote transmission and real-time monitoring of data.

[0004] The technical solution of the present invention includes the following main parts: a multi-interface field communication module, which designs and integrates a variety of field communication interface circuits to ensure compatibility and stability with various sensors; an input and output control module, which provides input and output ports for switching and analog quantities to achieve precise control of field equipment; a multi-interface remote communication module, which integrates a variety of communication methods. Users can choose the appropriate communication method to connect to the cloud platform according to the field environment.

[0005] The specific circuit is as follows: the circuit includes two parts: a main board and a bottom board.

[0006] The specific circuits of the mainboard mainly include microprocessor (MCU) chip STM32F429VET6, reference voltage chip REF3033AIDBZR, electrically erasable memory chip 24C02, NOR FLASH memory chip W25Q128JVSIQ, 4G communication module YED-C724, ​​WiFi communication module ESP-07S, LORA communication module E32-433T20S, and network communication chip W5500.

[0007] The connection of the main board circuit is that pin 1 of the microprocessor U1 is connected to pin 33 of the network communication chip U8, pin 2 of the microprocessor U1 is connected to pin 37 of the network communication chip U8, pin 3 of the microprocessor U1 is connected to pin 32 of the network communication chip U8, pin 4 of the microprocessor U1 is connected to pin 34 of the network communication chip U8, pin 5 of the microprocessor U1 is connected to pin 35 of the network communication chip U8, pin 96 of the microprocessor U1 is connected to pin 36 of the network communication chip U8, pin 7 of the microprocessor U1 is connected to pin 1 of the WiFi communication unit U6, pin 17 of the microprocessor U1 is connected to pin 3 of the WiFi communication unit U6, pin 23 of the microprocessor U1 is connected to pin 15 of the WiFi communication unit U6 and resistor R8, pin 24 of the microprocessor U1 is connected to pin 16 of the WiFi communication unit U6 and resistor R7, pin 25 of the microprocessor U1 is connected to pin 23 of the inter-board connector H4, pin 26 of the microprocessor U1 is connected to pin 22 of the inter-board connector H4, and pin 29 of the microprocessor U1 is connected to NOR Pin 1 of FLASH memory U4 and pin 30 of microprocessor U1 are connected to pin 6 of NOR FLASH memory U4, pin 31 of microprocessor U1 is connected to pin 2 of NOR FLASH memory U4, and pin 32 of microprocessor U1 is connected to NOR Pin 5 of FLASH memory U4, pin 33 of microprocessor U1 is connected to pin 15 of inter-board connector H4, pin 34 of microprocessor U1 is connected to pin 14 of inter-board connector H4, pin 35 of microprocessor U1 is connected to pin 13 of inter-board connector H4, pin 36 of microprocessor U1 is connected to pin 12 of inter-board connector H4, pin 38 of microprocessor U1 is connected to pin 21 of inter-board connector H4, pin 39 of microprocessor U1 is connected to pin 20 of inter-board connector H4, pin 40 of microprocessor U1 is connected to pin 11 of inter-board connector H4, pin 41 of microprocessor U1 is connected to pin 10 of inter-board connector H4, pin 42 of microprocessor U1 is connected to pin 9 of inter-board connector H4, pin 43 of microprocessor U1 is connected to pin 8 of inter-board connector H4, pin 54 of microprocessor U1 is connected to pin 6 of inter-board connector H4, pin 55 of microprocessor U1 is connected to pin 5 of inter-board connector H4, microprocessor Pin 56 of the microprocessor U1 is connected to pin 4 of the inter-board connector H4, pin 57 of the microprocessor U1 is connected to pin 3 of the inter-board connector H4, pin 58 of the microprocessor U1 is connected to pin 2 of the inter-board connector H4, pin 59 of the microprocessor U1 is connected to pin 1 of the inter-board connector H4, pin 60 of the microprocessor U1 is connected to pin 22 of the resistor R12, pin 61 of the microprocessor U1 is connected to pin 20 of the RF433 communication unit U7, pin 62 of the microprocessor U1 is connected to pin 21 of the RF433 communication unit U7, pin 63 of the microprocessor U1 is connected to pin 22 of the RF433 communication unit U7, pin 64 of the microprocessor U1 is connected to pin 23 of the RF433 communication unit U7, pin 65 of the microprocessor U1 is connected to pin 24 of the RF433 communication unit U7, pin 68 of the microprocessor U1 is connected to pin 11 of the 4G communication unit U5, pin 69 of the microprocessor U1 is connected to pin 10 of the 4G communication unit U5,Pin 77 of microprocessor U1 is connected to pin 6 of 4G communication unit U5, pin 78 of microprocessor U1 is connected to pin 7 of 4G communication unit U5, pin 79 of microprocessor U1 is connected to pin 8 of 4G communication unit U5, pin 84 of microprocessor U1 is connected to pin 9 of 4G communication unit U5, pin 80 of microprocessor U1 is connected to pin 5 of touch screen connector CN1, pin 83 of microprocessor U1 is connected to pin 6 of touch screen connector CN1, pin 86 of microprocessor U1 is connected to pin 24 of inter-board connector H4, pin 87 of microprocessor U1 is connected to pin 25 of inter-board connector H4, pin 88 of microprocessor U1 is connected to pin 10 of inter-board connector H4 Pin 26 of the microprocessor U1, pin 89 of the microprocessor U1 is connected to pin 27 of the inter-board connector H4, pin 92 of the microprocessor U1 is connected to pin 6 of the electrically erasable memory U3, pin 93 of the microprocessor U1 is connected to pin 5 of the electrically erasable memory U3, pins 11, 19, 28, 50, 75 and 100 of the microprocessor U1 are connected to a 3.3V power supply, pins 10, 27, 74 and 99 of the microprocessor U1 are grounded, pin 6 of the microprocessor U1 is connected to the cathode of diodes D1 and D2 and capacitor C8, pin 8 of the microprocessor U1 is connected to one end of the crystal oscillator X1 and capacitor C12, and pin 9 of the microprocessor U1 is connected to the other end of the crystal oscillator X1 One end and capacitor C13, pin 12 of microprocessor U1 is connected to one end of crystal oscillator X2 and capacitor C16, pin 13 of microprocessor U1 is connected to the other end of crystal oscillator X2 and capacitor C15, pin 14 of microprocessor U1 is connected to resistor R6 and capacitor C20, pin 20 of microprocessor U1 is connected to analog ground, pin 49 of microprocessor U1 is connected to capacitor C14, pin 73 of microprocessor U1 is connected to capacitor C7, pin 94 of microprocessor U1 is connected to resistor R27, pin 47 of microprocessor U1 is connected to pin 3 of terminal H2, pin 48 of microprocessor U1 is connected to pin 2 of terminal H2, pin 53 of microprocessor U1 is connected to light emitting diode LED4 Negative pole, pin 91 of microprocessor U1 is connected to the negative pole of light emitting diode LED3, pin 90 of microprocessor U1 is connected to the negative pole of light emitting diode LED2, pin 85 of microprocessor U1 is connected to the negative pole of light emitting diode LED1, pin 70 of microprocessor U1 is connected to pin 6 of terminal H5, pin 71 of microprocessor U1 is connected to pin 7 of terminal H5, pin 72 of microprocessor U1 is connected to pin 3 of terminal H1, pin 76 of microprocessor U1 is connected to pin 2 of terminal H1, pin 21 of microprocessor U1 is connected to pin 2 of reference voltage chip U2 and capacitor C11, pin 22 of microprocessor U1 is connected to capacitors C9~C11 and resistor R5; Pin 1 of the reference voltage chip U2 is connected to a 5V power supply and C17, pin 2 of the reference voltage chip U2 is connected to an analog ground, pins 1 to 4 and pin 7 of the electrically erasable memory U3 are grounded, pin 8 of the electrically erasable memory U3 is connected to a 3.3V power supply and a capacitor C18, pins 3, 7 and 8 of the NORFLASH memory U4 are connected to a 3.3V power supply and a capacitor C18, pin 4 of the NOR FLASH memory U4 is grounded, pin 1 of the 4G communication unit U5 is connected to a 5V power supply, pins 2, 4 and 20 of the 4G communication unit U5 are grounded, pin 6 of the WiFi communication unit U6 is connected to capacitor C21, capacitor C22, electrolytic capacitor E1 and a 3.3V power supply, pin 9 of the WiFi communication unit U6 is grounded, and pins 2, 8, 11, 13, 14, 15, 16, 19 and 26 of the RF433 communication unit U7 are connected Ground, the 25th pin of the RF433 communication unit U7 is connected to the drain of the field effect transistor Q2, the source of the field effect transistor Q2 is connected to the resistor R13, the capacitor C23 and the cathode of the diode D3, the gate of the field effect transistor Q2 is connected to the resistors R9, R13 and the capacitor C23, the collector of the transistor Q1 is connected to the resistor R9, the base of the transistor Q1 is connected to the resistors R10 and R12, the emitter of the transistor Q1 is grounded, the 1st pin of the network communication chip U8 is connected to the resistor R23, the network communication chip Pin 2 of U8 is connected to resistor R22, pin 5 of network communication chip U8 is connected to resistor R25, pin 6 of network communication chip U8 is connected to resistor R24, pins 4, 8, 11, 15, 17, 21 and 28 of network communication chip U8 are connected to 3.3V power supply, pin 10 of network communication chip U8 is connected to resistor R21, pin 20 of network communication chip U8 is connected to capacitor C27, pin 22 of network communication chip U8 is connected to capacitor C28, and pin 10 of network communication chip U8 is connected to resistor R21, pin 20 of network communication chip U8 is connected to capacitor C27, and pin 22 of network communication chip U8 is connected to capacitor C28. Pin 25 is connected to pin 10 of the RJ45 terminal, pin 27 of the network communication chip U8 is connected to pin 11 of the RJ45 terminal, pin 30 of the network communication chip U8 is connected to crystal oscillator X3, resistor R26 and capacitor C29, pin 31 of the network communication chip U8 is connected to crystal oscillator X3, resistor R26 and capacitor C30, and pins 4, 8, 11, 15, 17, 21, 29, 38, 39, 40, 41 and 42 of the network communication chip U8 are grounded; The specific circuit of the baseboard according to claim 2 mainly includes power management chips XL1509-3.3 and XL1509-5.0E1, PWM to analog chip GP8301, field effect tube DMP4015SK3Q-13, relay G5V-1, photocoupler TLP290, RS485 communication module TD321D485H-A, CAN communication module TD301MCANFD, and operational amplifier chip LM258.

[0008] The connection of the bottom board circuit is that pin 1 of the power management chip U1 is connected to a 24V power supply, pin 2 of the power management chip U1 is connected to the cathode of the diode D3 and the inductor L2, pin 3 of the power management chip U1 is connected to a 3.3V power supply, the inductor L2 and the positive electrode of the electrolytic capacitor E4, pins 4 to 8 of the power management chip U1 are grounded, pin 1 of the power management chip U2 is connected to a 24V power supply, pin 2 of the power management chip U2 is connected to the cathode of the diode D4 and the inductor L3, pin 3 of the power management chip U2 is connected to a 5V power supply, the inductor L3 and the positive electrode of the electrolytic capacitor E6, pins 4 to 8 of the power management chip U2 are grounded, pin 2 of the PWM to analog chip U3 is connected to pin 7 of the inter-board connector H2, and pin 3 of the PWM to analog chip U3 is connected to the inter-board connector H3. Pin 10 of the inter-board connector H2, Pin 4 of the PWM to analog chip U3 is connected to the A24V power supply and capacitor C5, Pin 5 of the PWM to analog chip U3 is grounded, Pin 6 of the PWM to analog chip U3 is connected to capacitor C6 and resistor R4, Pin 7 of the PWM to analog chip U3 is connected to the source of the field effect transistor U4, Pin 8 of the PWM to analog chip U3 is connected to capacitor C7, Pin 2 of the PWM to analog chip U5 is connected to Pin 9 of the inter-board connector H2, Pin 3 of the PWM to analog chip U5 is connected to Pin 12 of the inter-board connector H2, Pin 4 of the PWM to analog chip U5 is connected to the A24V power supply and capacitor C10, Pin 5 of the PWM to analog chip U5 is grounded, Pin 6 of the PWM to analog chip U5 is connected to capacitor C11 and resistor R4. Resistor R7, pin 7 of PWM to analog chip U5 is connected to the source of field effect tube U6, pin 8 of PWM to analog chip U5 is connected to capacitor C12, the gate of field effect tube U4 is connected to resistor R5, capacitor C8 and the positive electrode of diode D5, the drain of field effect tube U4 is connected to the negative electrode of diode D7, capacitor C9 and resistor R3, the gate of field effect tube U6 is connected to resistor R8, capacitor C13 and the positive electrode of diode D8, the drain of field effect tube U6 is connected to the negative electrode of diode D10, capacitor C14 and resistor R6, pin 2 of relay U7 is connected to 5V power supply, the positive electrode of light-emitting diode LED1 and the negative electrode of diode D15, pin 5 and pin 6 of relay U7 are grounded, pin 9 of relay U7 is connected to resistor R21, the positive electrode of diode D15 The positive electrode and the collector of transistor Q1, the 10th pin of relay U7 is connected to the 2nd pin of terminal H3, the 2nd pin of relay U8 is connected to the 5V power supply, the positive electrode of light-emitting diode LED2 and the negative electrode of diode D16, the 5th and 6th pins of relay U8 are grounded, the 9th pin of relay U8 is connected to resistor R22, the positive electrode of diode D16 and the collector of transistor Q2, the 10th pin of relay U8 is connected to the 3rd pin of terminal H3, the 2nd pin of relay U9 is connected to the 5V power supply, the positive electrode of light-emitting diode LED3 and the negative electrode of diode D17, the 5th and 6th pins of relay U9 are grounded, the 9th pin of relay U9 is connected to resistor R25, the positive electrode of diode D17 and the collector of transistor Q3, the 10th pin of relay U9 is connected to the 4th pin of terminal H3,Pin 2 of relay U10 is connected to a 5V power supply, the anode of light-emitting diode LED4 and the cathode of diode D18, pins 5 and 6 of relay U10 are grounded, pin 9 of relay U10 is connected to resistor R26, the anode of diode D18 and the collector of transistor Q4, pin 10 of relay U10 is connected to pin 5 of terminal H3, pin 1 of photocoupler U11 is connected to resistor R33, pin 2 of photocoupler U11 is connected to the isolation input ground, pin 3 of photocoupler U11 is grounded, pin 4 of photocoupler U11 is connected to resistor R29, resistor R30 and pin 1 of inter-board connector H2, pin 1 of photocoupler U12 is connected to resistor R34, pin 2 of photocoupler U12 is connected to the isolation input ground, and pin 3 of photocoupler U12 is grounded. Pin 4 of the photocoupler U12 is connected to resistor R31, resistor R32 and pin 2 of the inter-board connector H2, pin 1 of the photocoupler U13 is connected to resistor R39, pin 2 of the photocoupler U13 is connected to the isolation input ground, pin 3 of the photocoupler U13 is grounded, pin 4 of the photocoupler U13 is connected to resistor R35, resistor R36 and pin 3 of the inter-board connector H2, pin 1 of the photocoupler U14 is connected to resistor R40, pin 2 of the photocoupler U14 is connected to the isolation input ground, pin 3 of the photocoupler U14 is grounded, pin 4 of the photocoupler U14 is connected to resistor R37, resistor R38 and pin 4 of the inter-board connector H2, pin 1 of the photocoupler U15 is connected to resistor R45, pin 2 of the photocoupler U15 is connected to the isolation input ground, and the photocoupler U15 Pin 3 of coupler U15 is grounded, pin 4 of photocoupler U15 is connected to resistor R41, resistor R42 and pin 5 of inter-board connector H2, pin 1 of photocoupler U16 is connected to resistor R46, pin 2 of photocoupler U16 is connected to isolation input ground, pin 3 of photocoupler U16 is grounded, pin 4 of photocoupler U16 is connected to resistor R43, resistor R44 and pin 6 of inter-board connector H2, pin 1 of RS485 isolation unit U17 is connected to 3.3V power supply and capacitor C25, pin 2 of RS485 isolation unit U17 is grounded, pin 3 of RS485 isolation unit U17 is connected to pin 21 of inter-board connector H2, pin 4 of RS485 isolation unit U17 is connected to pin 24 of inter-board connector H2, RS485 isolation unit Pin 7 of RS485 isolation unit U17 is connected to resistor R47, pin 8 of RS485 isolation unit U17 is connected to TVS diode TV2, TVS diode TV3, resistor R48 and pin 8 of terminal H3, pin 9 of RS485 isolation unit U17 is connected to TVS diode TV2, TVS diode TV1, resistor R47 and pin 7 of terminal H3, pin 1 of RS485 isolation unit U19 is connected to 3.3V power supply and capacitor C27, pin 2 of RS485 isolation unit U19 is grounded, pin 3 of RS485 isolation unit U19 is connected to pin 22 of inter-board connector H2, pin 4 of RS485 isolation unit U19 is connected to pin 19 of inter-board connector H2, pin 7 of RS485 isolation unit U19 is connected to resistor R49,Pin 8 of the RS485 isolation unit U19 is connected to TVS diode TV8, TVS diode TV9, resistor R50 and pin 10 of terminal H3, pin 9 of the RS485 isolation unit U19 is connected to TVS diode TV7, TVS diode TV8, resistor R49 and pin 9 of terminal H3, pin 1 of the CAN bus isolation unit U18 is connected to pin 20 of the inter-board connector H2, pin 2 of the CAN bus isolation unit U18 is connected to pin 17 of the inter-board connector H2, pin 3 of the CAN bus isolation unit U18 is grounded, pin 4 of the CAN bus isolation unit U18 is connected to a 3.3V power supply and capacitor C26, pin 5 of the CAN bus isolation unit U18 is connected to TVS diode TV4 and TVS diode TV6, pin 6 of the CAN bus isolation unit U18 is connected to pin 12 of terminal H3, TVS diode TV5 and TVS diode TV6, pin 7 of the CAN bus isolation unit U18 is connected to pin 13 of terminal H3, TVS diode TV4 and TVS diode C26. The diode TV5, the pin 1 of the operational amplifier chip U20 is connected to the pin 2 of the operational amplifier chip U20 and the resistor R10, the pin 3 of the operational amplifier chip U20 is connected to the resistor R9 and the capacitor C17, the pin 4 of the operational amplifier chip U20 is connected to the analog ground, the pin 5 of the operational amplifier chip U20 is connected to the resistor R11 and the capacitor C19, the pin 6 of the operational amplifier chip U20 is connected to the pin 7 of the operational amplifier chip U20 and the resistor R12, the pin 8 of the operational amplifier chip U20 is connected to the A5V power supply and the capacitor C 15. Pin 1 of the operational amplifier chip U21 is connected to pin 2 of the operational amplifier chip U21 and resistor R16, pin 3 of the operational amplifier chip U21 is connected to resistor R15 and capacitor C23, pin 4 of the operational amplifier chip U21 is connected to analog ground, pin 5 of the operational amplifier chip U21 is connected to resistor R17 and capacitor C24, pin 6 of the operational amplifier chip U21 is connected to pin 7 of the operational amplifier chip U21 and resistor R18, and pin 8 of the operational amplifier chip U21 is connected to A5V power supply and capacitor C20. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 A schematic diagram of the logical relationship of the present invention in the actual work of engineering machinery construction site; Figure 2 It is a circuit functional block diagram of a multi-interface communication and control unit; Figures 3 to 6 The figure shows the mainboard circuit schematic diagram of the multi-interface communication and control unit; Figures 7 to 13 The figure shows the schematic diagram of the baseboard circuit of the multi-interface communication and control unit. DETAILED DESCRIPTION

[0010] By attaching Figure 2It can be seen that the multi-interface field communication module has designed field communication interface circuits such as RS485 bus, CAN bus and LORA; input and output control circuits for switch quantity and analog quantity; Ethernet port circuit, wireless 4G module circuit, WiFi module circuit and other circuits, as well as USB interface and touch screen circuit.

[0011] The multi-interface communication and control unit circuit includes two parts: a main board and a base board.

[0012] The specific circuits of the mainboard mainly include microprocessor (MCU) chip STM32F429VET6, reference voltage chip REF3033AIDBZR, electrically erasable memory chip 24C02, NOR FLASH memory chip W25Q128JVSIQ, 4G communication module YED-C724, ​​WiFi communication module ESP-07S, LORA communication module E32-433T20S, and network communication chip W5500.

[0013] The connection of the main board circuit is that pin 1 of the microprocessor U1 is connected to pin 33 of the network communication chip U8, pin 2 of the microprocessor U1 is connected to pin 37 of the network communication chip U8, pin 3 of the microprocessor U1 is connected to pin 32 of the network communication chip U8, pin 4 of the microprocessor U1 is connected to pin 34 of the network communication chip U8, pin 5 of the microprocessor U1 is connected to pin 35 of the network communication chip U8, pin 96 of the microprocessor U1 is connected to pin 36 of the network communication chip U8, pin 7 of the microprocessor U1 is connected to pin 1 of the WiFi communication unit U6, pin 17 of the microprocessor U1 is connected to pin 3 of the WiFi communication unit U6, pin 23 of the microprocessor U1 is connected to pin 15 of the WiFi communication unit U6 and resistor R8, pin 24 of the microprocessor U1 is connected to pin 16 of the WiFi communication unit U6 and resistor R7, pin 25 of the microprocessor U1 is connected to pin 23 of the inter-board connector H4, pin 26 of the microprocessor U1 is connected to pin 22 of the inter-board connector H4, and pin 29 of the microprocessor U1 is connected to NOR Pin 1 of FLASH memory U4 and pin 30 of microprocessor U1 are connected to pin 6 of NOR FLASH memory U4, pin 31 of microprocessor U1 is connected to pin 2 of NOR FLASH memory U4, and pin 32 of microprocessor U1 is connected to NOR Pin 5 of FLASH memory U4, pin 33 of microprocessor U1 is connected to pin 15 of inter-board connector H4, pin 34 of microprocessor U1 is connected to pin 14 of inter-board connector H4, pin 35 of microprocessor U1 is connected to pin 13 of inter-board connector H4, pin 36 of microprocessor U1 is connected to pin 12 of inter-board connector H4, pin 38 of microprocessor U1 is connected to pin 21 of inter-board connector H4, pin 39 of microprocessor U1 is connected to pin 20 of inter-board connector H4, pin 40 of microprocessor U1 is connected to pin 11 of inter-board connector H4, pin 41 of microprocessor U1 is connected to pin 10 of inter-board connector H4, pin 42 of microprocessor U1 is connected to pin 9 of inter-board connector H4, pin 43 of microprocessor U1 is connected to pin 8 of inter-board connector H4, pin 54 of microprocessor U1 is connected to pin 6 of inter-board connector H4, pin 55 of microprocessor U1 is connected to pin 5 of inter-board connector H4, microprocessor Pin 56 of the microprocessor U1 is connected to pin 4 of the inter-board connector H4, pin 57 of the microprocessor U1 is connected to pin 3 of the inter-board connector H4, pin 58 of the microprocessor U1 is connected to pin 2 of the inter-board connector H4, pin 59 of the microprocessor U1 is connected to pin 1 of the inter-board connector H4, pin 60 of the microprocessor U1 is connected to pin 22 of the resistor R12, pin 61 of the microprocessor U1 is connected to pin 20 of the RF433 communication unit U7, pin 62 of the microprocessor U1 is connected to pin 21 of the RF433 communication unit U7, pin 63 of the microprocessor U1 is connected to pin 22 of the RF433 communication unit U7, pin 64 of the microprocessor U1 is connected to pin 23 of the RF433 communication unit U7, pin 65 of the microprocessor U1 is connected to pin 24 of the RF433 communication unit U7, pin 68 of the microprocessor U1 is connected to pin 11 of the 4G communication unit U5, pin 69 of the microprocessor U1 is connected to pin 10 of the 4G communication unit U5,Pin 77 of the microprocessor U1 is connected to pin 6 of the 4G communication unit U5, pin 78 of the microprocessor U1 is connected to pin 7 of the 4G communication unit U5, pin 79 of the microprocessor U1 is connected to pin 8 of the 4G communication unit U5, pin 84 of the microprocessor U1 is connected to pin 9 of the 4G communication unit U5, pin 80 of the microprocessor U1 is connected to pin 5 of the touch screen connector CN1, pin 83 of the microprocessor U1 is connected to pin 6 of the touch screen connector CN1, pin 86 of the microprocessor U1 is connected to pin 24 of the inter-board connector H4, pin 87 of the microprocessor U1 is connected to pin 25 of the inter-board connector H4, pin 88 of the microprocessor U1 is connected to pin 26 of the inter-board connector H4, and pin 89 of the microprocessor U1 is connected to the inter-board connector H 4, pin 92 of microprocessor U1 is connected to pin 6 of electrically erasable memory U3, pin 93 of microprocessor U1 is connected to pin 5 of electrically erasable memory U3, pins 11, 19, 28, 50, 75 and 100 of microprocessor U1 are connected to 3.3V power supply, pins 10, 27, 74 and 99 of microprocessor U1 are grounded, pin 6 of microprocessor U1 is connected to the cathode of diodes D1 and D2 and capacitor C8, pin 8 of microprocessor U1 is connected to one end of crystal oscillator X1 and capacitor C12, pin 9 of microprocessor U1 is connected to the other end of crystal oscillator X1 and capacitor C13, pin 12 of microprocessor U1 is connected to one end of crystal oscillator X2 and capacitor C16, pin 13 of microprocessor U1 is connected to one end of crystal oscillator X2 and capacitor C17, pin 14 of microprocessor U1 is connected to one end of crystal oscillator X2 and capacitor C18, pin 15 of microprocessor U1 is connected to one end of crystal oscillator X2 and capacitor C19, pin 10 of microprocessor U1 is connected to one end of crystal oscillator X2 and capacitor C20, pin 11 of microprocessor U1 is connected to one end of crystal oscillator X2 and capacitor C21, pin 11 of microprocessor U1 is connected to one end of crystal oscillator X2 and capacitor C22, pin 11 of microprocessor U1 is connected to one end of crystal oscillator X2 and capacitor C23, pin 11 of microprocessor U1 is connected to one end of crystal oscillator X2 and capacitor C24, pin 11 of microprocessor U1 is connected to one end of crystal oscillator X2 and capacitor C25, pin The pin is connected to the other end of crystal oscillator X2 and capacitor C15, pin 14 of microprocessor U1 is connected to resistor R6 and capacitor C20, pin 20 of microprocessor U1 is connected to analog ground, pin 49 of microprocessor U1 is connected to capacitor C14, pin 73 of microprocessor U1 is connected to capacitor C7, pin 94 of microprocessor U1 is connected to resistor R27, pin 47 of microprocessor U1 is connected to pin 3 of terminal H2, pin 48 of microprocessor U1 is connected to pin 2 of terminal H2, pin 53 of microprocessor U1 is connected to the cathode of light-emitting diode LED4, pin 91 of microprocessor U1 is connected to the cathode of light-emitting diode LED3, pin 90 of microprocessor U1 is connected to the cathode of light-emitting diode LED2, pin 85 of microprocessor U1 is connected to pin 1 of light-emitting diode The cathode of diode LED1, pin 70 of microprocessor U1 is connected to pin 6 of terminal H5, pin 71 of microprocessor U1 is connected to pin 7 of terminal H5, pin 72 of microprocessor U1 is connected to pin 3 of terminal H1, pin 76 of microprocessor U1 is connected to pin 2 of terminal H1, pin 21 of microprocessor U1 is connected to pin 2 of reference voltage chip U2 and capacitor C11, pin 22 of microprocessor U1 is connected to capacitors C9~C11 and resistor R5, pin 1 of reference voltage chip U2 is connected to 5V power supply and C17, pin 2 of reference voltage chip U2 is connected to analog ground, pins 1~4 and pin 7 of electrically erasable memory U3 are grounded, pin 8 of electrically erasable memory U3 is connected to 3.3V power supply and capacitor C18, NOR Pins 3, 7 and 8 of the FLASH memory U4 are connected to a 3.3V power supply and capacitor C18, pin 4 of the NOR FLASH memory U4 is grounded, pin 1 of the 4G communication unit U5 is connected to a 5V power supply, and pins 2, 4 and 20 of the 4G communication unit U5 are grounded.Pin 6 of WiFi communication unit U6 is connected to capacitor C21, capacitor C22, electrolytic capacitor E1 and 3.3V power supply, pin 9 of WiFi communication unit U6 is grounded, pin 2, pin 8, pin 11, pin 13, pin 14, pin 15, pin 16, pin 19 and pin 26 of RF433 communication unit U7 are grounded, pin 25 of RF433 communication unit U7 is connected to the drain of field effect transistor Q2, the source of field effect transistor Q2 is connected to resistor R13, capacitor C23 and the cathode of diode D3, the gate of field effect transistor Q2 is connected to resistors R9, R13 and capacitor C23, the collector of transistor Q1 is connected to resistor R9, the base of transistor Q1 is connected to resistors R10 and R12, the emitter of transistor Q1 is grounded, pin 1 of network communication chip U8 is connected to resistor R23, pin 2 of network communication chip U8 is connected to resistor R22, and pin 5 of network communication chip U8 is connected to resistor R 25. Pin 6 of the network communication chip U8 is connected to resistor R24. Pin 4, pin 8, pin 11, pin 15, pin 17, pin 21 and pin 28 of the network communication chip U8 are connected to a 3.3V power supply. Pin 10 of the network communication chip U8 is connected to resistor R21. Pin 20 of the network communication chip U8 is connected to capacitor C27. Pin 22 of the network communication chip U8 is connected to capacitor C28. Pin 25 of the network communication chip U8 is connected to pin 10 of the RJ45 terminal. Pin 27 of the network communication chip U8 is connected to pin 11 of the RJ45 terminal. Pin 30 of the network communication chip U8 is connected to crystal oscillator X3, resistor R26 and capacitor C29. Pin 31 of the network communication chip U8 is connected to crystal oscillator X3, resistor R26 and capacitor C30. Pin 4, pin 8, pin 11, pin 15, pin 17, pin 21, pin 29, pin 38, pin 39, pin 40, pin 41 and pin 42 of the network communication chip U8 are grounded. The specific circuit of the baseboard mainly includes power management chips XL1509-3.3 and XL1509-5.0E1, PWM to analog chip GP8301, field effect tube DMP4015SK3Q-13, relay G5V-1, photocoupler TLP290, RS485 communication module TD321D485H-A, CAN communication module TD301MCANFD, operational amplifier chip LM258; The connection of the bottom board circuit is that pin 1 of the power management chip U1 is connected to a 24V power supply, pin 2 of the power management chip U1 is connected to the cathode of the diode D3 and the inductor L2, pin 3 of the power management chip U1 is connected to a 3.3V power supply, the inductor L2 and the positive electrode of the electrolytic capacitor E4, pins 4 to 8 of the power management chip U1 are grounded, pin 1 of the power management chip U2 is connected to a 24V power supply, pin 2 of the power management chip U2 is connected to the cathode of the diode D4 and the inductor L3, pin 3 of the power management chip U2 is connected to a 5V power supply, the inductor L3 and the positive electrode of the electrolytic capacitor E6, pins 4 to 8 of the power management chip U2 are grounded, pin 2 of the PWM to analog chip U3 is connected to pin 7 of the inter-board connector H2, and pin 3 of the PWM to analog chip U3 is connected to the inter-board connector H3. Pin 10 of the inter-board connector H2, Pin 4 of the PWM to analog chip U3 is connected to the A24V power supply and capacitor C5, Pin 5 of the PWM to analog chip U3 is grounded, Pin 6 of the PWM to analog chip U3 is connected to capacitor C6 and resistor R4, Pin 7 of the PWM to analog chip U3 is connected to the source of the field effect transistor U4, Pin 8 of the PWM to analog chip U3 is connected to capacitor C7, Pin 2 of the PWM to analog chip U5 is connected to Pin 9 of the inter-board connector H2, Pin 3 of the PWM to analog chip U5 is connected to Pin 12 of the inter-board connector H2, Pin 4 of the PWM to analog chip U5 is connected to the A24V power supply and capacitor C10, Pin 5 of the PWM to analog chip U5 is grounded, Pin 6 of the PWM to analog chip U5 is connected to capacitor C11 and resistor R4. Resistor R7, pin 7 of PWM to analog chip U5 is connected to the source of field effect tube U6, pin 8 of PWM to analog chip U5 is connected to capacitor C12, the gate of field effect tube U4 is connected to resistor R5, capacitor C8 and the positive electrode of diode D5, the drain of field effect tube U4 is connected to the negative electrode of diode D7, capacitor C9 and resistor R3, the gate of field effect tube U6 is connected to resistor R8, capacitor C13 and the positive electrode of diode D8, the drain of field effect tube U6 is connected to the negative electrode of diode D10, capacitor C14 and resistor R6, pin 2 of relay U7 is connected to 5V power supply, the positive electrode of light-emitting diode LED1 and the negative electrode of diode D15, pin 5 and pin 6 of relay U7 are grounded, pin 9 of relay U7 is connected to resistor R21, the positive electrode of diode D15 The positive electrode and the collector of transistor Q1, the 10th pin of relay U7 is connected to the 2nd pin of terminal H3, the 2nd pin of relay U8 is connected to the 5V power supply, the positive electrode of light-emitting diode LED2 and the negative electrode of diode D16, the 5th and 6th pins of relay U8 are grounded, the 9th pin of relay U8 is connected to resistor R22, the positive electrode of diode D16 and the collector of transistor Q2, the 10th pin of relay U8 is connected to the 3rd pin of terminal H3, the 2nd pin of relay U9 is connected to the 5V power supply, the positive electrode of light-emitting diode LED3 and the negative electrode of diode D17, the 5th and 6th pins of relay U9 are grounded, the 9th pin of relay U9 is connected to resistor R25, the positive electrode of diode D17 and the collector of transistor Q3, the 10th pin of relay U9 is connected to the 4th pin of terminal H3,Pin 2 of relay U10 is connected to a 5V power supply, the anode of light-emitting diode LED4 and the cathode of diode D18, pins 5 and 6 of relay U10 are grounded, pin 9 of relay U10 is connected to resistor R26, the anode of diode D18 and the collector of transistor Q4, pin 10 of relay U10 is connected to pin 5 of terminal H3, pin 1 of photocoupler U11 is connected to resistor R33, pin 2 of photocoupler U11 is connected to the isolation input ground, pin 3 of photocoupler U11 is grounded, pin 4 of photocoupler U11 is connected to resistor R29, resistor R30 and pin 1 of inter-board connector H2, pin 1 of photocoupler U12 is connected to resistor R34, pin 2 of photocoupler U12 is connected to the isolation input ground, and pin 3 of photocoupler U12 is grounded. Pin 4 of the photocoupler U12 is connected to resistor R31, resistor R32 and pin 2 of the inter-board connector H2, pin 1 of the photocoupler U13 is connected to resistor R39, pin 2 of the photocoupler U13 is connected to the isolation input ground, pin 3 of the photocoupler U13 is grounded, pin 4 of the photocoupler U13 is connected to resistor R35, resistor R36 and pin 3 of the inter-board connector H2, pin 1 of the photocoupler U14 is connected to resistor R40, pin 2 of the photocoupler U14 is connected to the isolation input ground, pin 3 of the photocoupler U14 is grounded, pin 4 of the photocoupler U14 is connected to resistor R37, resistor R38 and pin 4 of the inter-board connector H2, pin 1 of the photocoupler U15 is connected to resistor R45, pin 2 of the photocoupler U15 is connected to the isolation input ground, and the photocoupler U15 Pin 3 of coupler U15 is grounded, pin 4 of photocoupler U15 is connected to resistor R41, resistor R42 and pin 5 of inter-board connector H2, pin 1 of photocoupler U16 is connected to resistor R46, pin 2 of photocoupler U16 is connected to isolation input ground, pin 3 of photocoupler U16 is grounded, pin 4 of photocoupler U16 is connected to resistor R43, resistor R44 and pin 6 of inter-board connector H2, pin 1 of RS485 isolation unit U17 is connected to 3.3V power supply and capacitor C25, pin 2 of RS485 isolation unit U17 is grounded, pin 3 of RS485 isolation unit U17 is connected to pin 21 of inter-board connector H2, pin 4 of RS485 isolation unit U17 is connected to pin 24 of inter-board connector H2, RS485 isolation unit Pin 7 of RS485 isolation unit U17 is connected to resistor R47, pin 8 of RS485 isolation unit U17 is connected to TVS diode TV2, TVS diode TV3, resistor R48 and pin 8 of terminal H3, pin 9 of RS485 isolation unit U17 is connected to TVS diode TV2, TVS diode TV1, resistor R47 and pin 7 of terminal H3, pin 1 of RS485 isolation unit U19 is connected to 3.3V power supply and capacitor C27, pin 2 of RS485 isolation unit U19 is grounded, pin 3 of RS485 isolation unit U19 is connected to pin 22 of inter-board connector H2, pin 4 of RS485 isolation unit U19 is connected to pin 19 of inter-board connector H2, pin 7 of RS485 isolation unit U19 is connected to resistor R49,Pin 8 of the RS485 isolation unit U19 is connected to TVS diode TV8, TVS diode TV9, resistor R50 and pin 10 of terminal H3, pin 9 of the RS485 isolation unit U19 is connected to TVS diode TV7, TVS diode TV8, resistor R49 and pin 9 of terminal H3, pin 1 of the CAN bus isolation unit U18 is connected to pin 20 of the inter-board connector H2, pin 2 of the CAN bus isolation unit U18 is connected to pin 17 of the inter-board connector H2, pin 3 of the CAN bus isolation unit U18 is grounded, pin 4 of the CAN bus isolation unit U18 is connected to a 3.3V power supply and capacitor C26, pin 5 of the CAN bus isolation unit U18 is connected to TVS diode TV4 and TVS diode TV6, pin 6 of the CAN bus isolation unit U18 is connected to pin 12 of terminal H3, TVS diode TV5 and TVS diode TV6, pin 7 of the CAN bus isolation unit U18 is connected to pin 13 of terminal H3, TVS diode TV4 and TVS diode C26. The diode TV5, the pin 1 of the operational amplifier chip U20 is connected to the pin 2 of the operational amplifier chip U20 and the resistor R10, the pin 3 of the operational amplifier chip U20 is connected to the resistor R9 and the capacitor C17, the pin 4 of the operational amplifier chip U20 is connected to the analog ground, the pin 5 of the operational amplifier chip U20 is connected to the resistor R11 and the capacitor C19, the pin 6 of the operational amplifier chip U20 is connected to the pin 7 of the operational amplifier chip U20 and the resistor R12, the pin 8 of the operational amplifier chip U20 is connected to the A5V power supply and the capacitor C 15. Pin 1 of the operational amplifier chip U21 is connected to pin 2 of the operational amplifier chip U21 and resistor R16, pin 3 of the operational amplifier chip U21 is connected to resistor R15 and capacitor C23, pin 4 of the operational amplifier chip U21 is connected to analog ground, pin 5 of the operational amplifier chip U21 is connected to resistor R17 and capacitor C24, pin 6 of the operational amplifier chip U21 is connected to pin 7 of the operational amplifier chip U21 and resistor R18, and pin 8 of the operational amplifier chip U21 is connected to A5V power supply and capacitor C20.

Claims

1. A multi-interface communication and control unit circuit for engineering machinery, characterized in that: It includes a microcontroller, a data acquisition and control circuit, a multi-interface remote communication circuit and a power supply circuit; The microcontroller exchanges data with field equipment and sensors through data acquisition and control circuits, thereby realizing data acquisition and equipment control; the microcontroller communicates with the cloud platform through multi-interface remote communication circuits, thereby realizing remote data transmission and real-time monitoring.

2. According to claim 1, a multi-interface communication and control unit circuit for engineering machinery, characterized in that: The data acquisition and control circuit includes an RS485 bus interface, a CAN bus interface, a wireless LORA interface, a switch input and output port, and an analog input and output port.

3. The multi-interface communication and control unit circuit for engineering machinery according to claim 1, characterized in that: The multi-interface remote communication circuit supports RJ45, wireless 4G network or WiFi communication modes; it includes Ethernet communication chip W5500, 4G communication module YED-C724, ​​and WiFi communication module ESP-07S.

4. The multi-interface communication and control unit circuit for engineering machinery according to claim 1, characterized in that: The switch output circuit performs switch control on the external device under the control of the microcontroller; the switch input circuit transmits the information of the switch state of the external device to the microcontroller; the analog output circuit controls the external device that needs analog control under the control of the microcontroller; the analog input circuit transmits the analog data of the external device to the microcontroller; the CAN interface circuit is connected to the external CAN interface device or sensor to realize data transmission between the microprocessor; the RS485 interface circuit is connected to the external RS485 interface device or sensor to realize data transmission between the microprocessor; the LORA interface circuit is connected to the external LORA interface device or sensor to realize data transmission between the microprocessor; the Ethernet port circuit is connected to the router to realize data transmission between the microprocessor and the network platform; the 4G module circuit is connected to the wireless network to realize data transmission between the microprocessor and the network platform; the WiFi module circuit is connected to the router through wireless connection to realize data transmission between the microprocessor and the network platform.

5. The multi-interface communication and control unit circuit for engineering machinery according to claim 1, characterized in that: It consists of two parts: the main board and the bottom board.

6. The multi-interface communication and control unit circuit for engineering machinery according to claim 6, characterized in that: The specific circuits of the mainboard include microprocessor (MCU) chip STM32F429VET6, reference voltage chip REF3033AIDBZR, electrically erasable memory chip 24C02, NOR FLASH memory chip W25Q128JVSIQ, 4G communication module YED-C724, ​​WiFi communication module ESP-07S, LORA communication module E32-433T20S, and network communication chip W5500.

7. A multi-interface communication and control unit circuit for engineering machinery according to claim 6, characterized in that: The connection of the main board circuit is that pin 1 of the microprocessor U1 is connected to pin 33 of the network communication chip U8, pin 2 of the microprocessor U1 is connected to pin 37 of the network communication chip U8, pin 3 of the microprocessor U1 is connected to pin 32 of the network communication chip U8, pin 4 of the microprocessor U1 is connected to pin 34 of the network communication chip U8, pin 5 of the microprocessor U1 is connected to pin 35 of the network communication chip U8, pin 96 of the microprocessor U1 is connected to pin 36 of the network communication chip U8, pin 7 of the microprocessor U1 is connected to pin 1 of the WiFi communication unit U6, pin 17 of the microprocessor U1 is connected to pin 3 of the WiFi communication unit U6, pin 23 of the microprocessor U1 is connected to pin 15 of the WiFi communication unit U6 and resistor R8, pin 24 of the microprocessor U1 is connected to pin 16 of the WiFi communication unit U6 and resistor R7, pin 25 of the microprocessor U1 is connected to pin 23 of the inter-board connector H4, pin 26 of the microprocessor U1 is connected to pin 22 of the inter-board connector H4, and pin 29 of the microprocessor U1 is connected to NOR Pin 1 of FLASH memory U4 and pin 30 of microprocessor U1 are connected to pin 6 of NOR FLASH memory U4, pin 31 of microprocessor U1 is connected to pin 2 of NOR FLASH memory U4, and pin 32 of microprocessor U1 is connected to NOR Pin 5 of FLASH memory U4, pin 33 of microprocessor U1 is connected to pin 15 of inter-board connector H4, pin 34 of microprocessor U1 is connected to pin 14 of inter-board connector H4, pin 35 of microprocessor U1 is connected to pin 13 of inter-board connector H4, pin 36 of microprocessor U1 is connected to pin 12 of inter-board connector H4, pin 38 of microprocessor U1 is connected to pin 21 of inter-board connector H4, pin 39 of microprocessor U1 is connected to pin 20 of inter-board connector H4, pin 40 of microprocessor U1 is connected to pin 11 of inter-board connector H4, pin 41 of microprocessor U1 is connected to pin 10 of inter-board connector H4, pin 42 of microprocessor U1 is connected to pin 9 of inter-board connector H4, pin 43 of microprocessor U1 is connected to pin 8 of inter-board connector H4, pin 54 of microprocessor U1 is connected to pin 6 of inter-board connector H4, pin 55 of microprocessor U1 is connected to pin 5 of inter-board connector H4, microprocessor Pin 56 of the microprocessor U1 is connected to pin 4 of the inter-board connector H4, pin 57 of the microprocessor U1 is connected to pin 3 of the inter-board connector H4, pin 58 of the microprocessor U1 is connected to pin 2 of the inter-board connector H4, pin 59 of the microprocessor U1 is connected to pin 1 of the inter-board connector H4, pin 60 of the microprocessor U1 is connected to pin 22 of the resistor R12, pin 61 of the microprocessor U1 is connected to pin 20 of the RF433 communication unit U7, pin 62 of the microprocessor U1 is connected to pin 21 of the RF433 communication unit U7, pin 63 of the microprocessor U1 is connected to pin 22 of the RF433 communication unit U7, pin 64 of the microprocessor U1 is connected to pin 23 of the RF433 communication unit U7, pin 65 of the microprocessor U1 is connected to pin 24 of the RF433 communication unit U7, pin 68 of the microprocessor U1 is connected to pin 11 of the 4G communication unit U5, pin 69 of the microprocessor U1 is connected to pin 10 of the 4G communication unit U5,Pin 77 of microprocessor U1 is connected to pin 6 of 4G communication unit U5, pin 78 of microprocessor U1 is connected to pin 7 of 4G communication unit U5, pin 79 of microprocessor U1 is connected to pin 8 of 4G communication unit U5, pin 84 of microprocessor U1 is connected to pin 9 of 4G communication unit U5, pin 80 of microprocessor U1 is connected to pin 5 of touch screen connector CN1, pin 83 of microprocessor U1 is connected to pin 6 of touch screen connector CN1, pin 86 of microprocessor U1 is connected to pin 24 of inter-board connector H4, pin 87 of microprocessor U1 is connected to pin 25 of inter-board connector H4, pin 88 of microprocessor U1 is connected to pin 10 of inter-board connector H4 Pin 26 of the microprocessor U1, pin 89 of the microprocessor U1 is connected to pin 27 of the inter-board connector H4, pin 92 of the microprocessor U1 is connected to pin 6 of the electrically erasable memory U3, pin 93 of the microprocessor U1 is connected to pin 5 of the electrically erasable memory U3, pins 11, 19, 28, 50, 75 and 100 of the microprocessor U1 are connected to a 3.3V power supply, pins 10, 27, 74 and 99 of the microprocessor U1 are grounded, pin 6 of the microprocessor U1 is connected to the cathode of diodes D1 and D2 and capacitor C8, pin 8 of the microprocessor U1 is connected to one end of the crystal oscillator X1 and capacitor C12, and pin 9 of the microprocessor U1 is connected to the other end of the crystal oscillator X1 One end and capacitor C13, pin 12 of microprocessor U1 is connected to one end of crystal oscillator X2 and capacitor C16, pin 13 of microprocessor U1 is connected to the other end of crystal oscillator X2 and capacitor C15, pin 14 of microprocessor U1 is connected to resistor R6 and capacitor C20, pin 20 of microprocessor U1 is connected to analog ground, pin 49 of microprocessor U1 is connected to capacitor C14, pin 73 of microprocessor U1 is connected to capacitor C7, pin 94 of microprocessor U1 is connected to resistor R27, pin 47 of microprocessor U1 is connected to pin 3 of terminal H2, pin 48 of microprocessor U1 is connected to pin 2 of terminal H2, pin 53 of microprocessor U1 is connected to light emitting diode LED4 Negative pole, pin 91 of microprocessor U1 is connected to the negative pole of light emitting diode LED3, pin 90 of microprocessor U1 is connected to the negative pole of light emitting diode LED2, pin 85 of microprocessor U1 is connected to the negative pole of light emitting diode LED1, pin 70 of microprocessor U1 is connected to pin 6 of terminal H5, pin 71 of microprocessor U1 is connected to pin 7 of terminal H5, pin 72 of microprocessor U1 is connected to pin 3 of terminal H1, pin 76 of microprocessor U1 is connected to pin 2 of terminal H1, pin 21 of microprocessor U1 is connected to pin 2 of reference voltage chip U2 and capacitor C11, pin 22 of microprocessor U1 is connected to capacitors C9~C11 and resistor R5; Pin 1 of the reference voltage chip U2 is connected to a 5V power supply and C17, pin 2 of the reference voltage chip U2 is connected to an analog ground, pins 1 to 4 and pin 7 of the electrically erasable memory U3 are grounded, pin 8 of the electrically erasable memory U3 is connected to a 3.3V power supply and a capacitor C18, pins 3, 7 and 8 of the NORFLASH memory U4 are connected to a 3.3V power supply and a capacitor C18, pin 4 of the NOR FLASH memory U4 is grounded, pin 1 of the 4G communication unit U5 is connected to a 5V power supply, pins 2, 4 and 20 of the 4G communication unit U5 are grounded, pin 6 of the WiFi communication unit U6 is connected to capacitor C21, capacitor C22, electrolytic capacitor E1 and a 3.3V power supply, pin 9 of the WiFi communication unit U6 is grounded, and pins 2, 8, 11, 13, 14, 15, 16, 19 and 26 of the RF433 communication unit U7 are connected Ground, the 25th pin of the RF433 communication unit U7 is connected to the drain of the field effect transistor Q2, the source of the field effect transistor Q2 is connected to the resistor R13, the capacitor C23 and the cathode of the diode D3, the gate of the field effect transistor Q2 is connected to the resistors R9, R13 and the capacitor C23, the collector of the transistor Q1 is connected to the resistor R9, the base of the transistor Q1 is connected to the resistors R10 and R12, the emitter of the transistor Q1 is grounded, the 1st pin of the network communication chip U8 is connected to the resistor R23, the network communication chip Pin 2 of U8 is connected to resistor R22, pin 5 of network communication chip U8 is connected to resistor R25, pin 6 of network communication chip U8 is connected to resistor R24, pins 4, 8, 11, 15, 17, 21 and 28 of network communication chip U8 are connected to 3.3V power supply, pin 10 of network communication chip U8 is connected to resistor R21, pin 20 of network communication chip U8 is connected to capacitor C27, pin 22 of network communication chip U8 is connected to capacitor C28, and pin 10 of network communication chip U8 is connected to resistor R21, pin 20 of network communication chip U8 is connected to capacitor C27, and pin 22 of network communication chip U8 is connected to capacitor C28. Pin 25 is connected to pin 10 of the RJ45 terminal, pin 27 of the network communication chip U8 is connected to pin 11 of the RJ45 terminal, pin 30 of the network communication chip U8 is connected to crystal oscillator X3, resistor R26 and capacitor C29, pin 31 of the network communication chip U8 is connected to crystal oscillator X3, resistor R26 and capacitor C30, and pins 4, 8, 11, 15, 17, 21, 29, 38, 39, 40, 41 and 42 of the network communication chip U8 are grounded.

8. The multi-interface communication and control unit circuit for engineering machinery according to claim 6, characterized in that: The specific circuit of the baseboard includes power management chips XL1509-3.3 and XL1509-5.0E1, PWM to analog chip GP8301, field effect tube DMP4015SK3Q-13, relay G5V-1, photocoupler TLP290, RS485 communication module TD321D485H-A, CAN communication module TD301MCANFD, and operational amplifier chip LM258.

9. The multi-interface communication and control unit circuit for engineering machinery according to claim 6, characterized in that: The connection of the bottom board circuit is that pin 1 of the power management chip U1 is connected to a 24V power supply, pin 2 of the power management chip U1 is connected to the cathode of the diode D3 and the inductor L2, pin 3 of the power management chip U1 is connected to a 3.3V power supply, the inductor L2 and the positive electrode of the electrolytic capacitor E4, pins 4 to 8 of the power management chip U1 are grounded, pin 1 of the power management chip U2 is connected to a 24V power supply, pin 2 of the power management chip U2 is connected to the cathode of the diode D4 and the inductor L3, pin 3 of the power management chip U2 is connected to a 5V power supply, the inductor L3 and the positive electrode of the electrolytic capacitor E6, pins 4 to 8 of the power management chip U2 are grounded, pin 2 of the PWM to analog chip U3 is connected to pin 7 of the inter-board connector H2, and pin 3 of the PWM to analog chip U3 is connected to the inter-board connector H3. Pin 10 of the inter-board connector H2, Pin 4 of the PWM to analog chip U3 is connected to the A24V power supply and capacitor C5, Pin 5 of the PWM to analog chip U3 is grounded, Pin 6 of the PWM to analog chip U3 is connected to capacitor C6 and resistor R4, Pin 7 of the PWM to analog chip U3 is connected to the source of the field effect transistor U4, Pin 8 of the PWM to analog chip U3 is connected to capacitor C7, Pin 2 of the PWM to analog chip U5 is connected to Pin 9 of the inter-board connector H2, Pin 3 of the PWM to analog chip U5 is connected to Pin 12 of the inter-board connector H2, Pin 4 of the PWM to analog chip U5 is connected to the A24V power supply and capacitor C10, Pin 5 of the PWM to analog chip U5 is grounded, Pin 6 of the PWM to analog chip U5 is connected to capacitor C11 and resistor R4. Resistor R7, pin 7 of PWM to analog chip U5 is connected to the source of field effect tube U6, pin 8 of PWM to analog chip U5 is connected to capacitor C12, the gate of field effect tube U4 is connected to resistor R5, capacitor C8 and the positive electrode of diode D5, the drain of field effect tube U4 is connected to the negative electrode of diode D7, capacitor C9 and resistor R3, the gate of field effect tube U6 is connected to resistor R8, capacitor C13 and the positive electrode of diode D8, the drain of field effect tube U6 is connected to the negative electrode of diode D10, capacitor C14 and resistor R6, pin 2 of relay U7 is connected to 5V power supply, the positive electrode of light-emitting diode LED1 and the negative electrode of diode D15, pin 5 and pin 6 of relay U7 are grounded, pin 9 of relay U7 is connected to resistor R21, the positive electrode of diode D15 The positive electrode and the collector of transistor Q1, the 10th pin of relay U7 is connected to the 2nd pin of terminal H3, the 2nd pin of relay U8 is connected to the 5V power supply, the positive electrode of light-emitting diode LED2 and the negative electrode of diode D16, the 5th and 6th pins of relay U8 are grounded, the 9th pin of relay U8 is connected to resistor R22, the positive electrode of diode D16 and the collector of transistor Q2, the 10th pin of relay U8 is connected to the 3rd pin of terminal H3, the 2nd pin of relay U9 is connected to the 5V power supply, the positive electrode of light-emitting diode LED3 and the negative electrode of diode D17, the 5th and 6th pins of relay U9 are grounded, the 9th pin of relay U9 is connected to resistor R25, the positive electrode of diode D17 and the collector of transistor Q3, the 10th pin of relay U9 is connected to the 4th pin of terminal H3,Pin 2 of relay U10 is connected to a 5V power supply, the anode of light-emitting diode LED4 and the cathode of diode D18, pins 5 and 6 of relay U10 are grounded, pin 9 of relay U10 is connected to resistor R26, the anode of diode D18 and the collector of transistor Q4, pin 10 of relay U10 is connected to pin 5 of terminal H3, pin 1 of photocoupler U11 is connected to resistor R33, pin 2 of photocoupler U11 is connected to the isolation input ground, pin 3 of photocoupler U11 is grounded, pin 4 of photocoupler U11 is connected to resistor R29, resistor R30 and pin 1 of inter-board connector H2, pin 1 of photocoupler U12 is connected to resistor R34, pin 2 of photocoupler U12 is connected to the isolation input ground, and pin 3 of photocoupler U12 is grounded. Pin 4 of the photocoupler U12 is connected to resistor R31, resistor R32 and pin 2 of the inter-board connector H2, pin 1 of the photocoupler U13 is connected to resistor R39, pin 2 of the photocoupler U13 is connected to the isolation input ground, pin 3 of the photocoupler U13 is grounded, pin 4 of the photocoupler U13 is connected to resistor R35, resistor R36 and pin 3 of the inter-board connector H2, pin 1 of the photocoupler U14 is connected to resistor R40, pin 2 of the photocoupler U14 is connected to the isolation input ground, pin 3 of the photocoupler U14 is grounded, pin 4 of the photocoupler U14 is connected to resistor R37, resistor R38 and pin 4 of the inter-board connector H2, pin 1 of the photocoupler U15 is connected to resistor R45, pin 2 of the photocoupler U15 is connected to the isolation input ground, and the photocoupler U15 Pin 3 of coupler U15 is grounded, pin 4 of photocoupler U15 is connected to resistor R41, resistor R42 and pin 5 of inter-board connector H2, pin 1 of photocoupler U16 is connected to resistor R46, pin 2 of photocoupler U16 is connected to isolation input ground, pin 3 of photocoupler U16 is grounded, pin 4 of photocoupler U16 is connected to resistor R43, resistor R44 and pin 6 of inter-board connector H2, pin 1 of RS485 isolation unit U17 is connected to 3.3V power supply and capacitor C25, pin 2 of RS485 isolation unit U17 is grounded, pin 3 of RS485 isolation unit U17 is connected to pin 21 of inter-board connector H2, pin 4 of RS485 isolation unit U17 is connected to pin 24 of inter-board connector H2, RS485 isolation unit Pin 7 of RS485 isolation unit U17 is connected to resistor R47, pin 8 of RS485 isolation unit U17 is connected to TVS diode TV2, TVS diode TV3, resistor R48 and pin 8 of terminal H3, pin 9 of RS485 isolation unit U17 is connected to TVS diode TV2, TVS diode TV1, resistor R47 and pin 7 of terminal H3, pin 1 of RS485 isolation unit U19 is connected to 3.3V power supply and capacitor C27, pin 2 of RS485 isolation unit U19 is grounded, pin 3 of RS485 isolation unit U19 is connected to pin 22 of inter-board connector H2, pin 4 of RS485 isolation unit U19 is connected to pin 19 of inter-board connector H2, pin 7 of RS485 isolation unit U19 is connected to resistor R49,Pin 8 of the RS485 isolation unit U19 is connected to TVS diode TV8, TVS diode TV9, resistor R50 and pin 10 of terminal H3, pin 9 of the RS485 isolation unit U19 is connected to TVS diode TV7, TVS diode TV8, resistor R49 and pin 9 of terminal H3, pin 1 of the CAN bus isolation unit U18 is connected to pin 20 of the inter-board connector H2, pin 2 of the CAN bus isolation unit U18 is connected to pin 17 of the inter-board connector H2, pin 3 of the CAN bus isolation unit U18 is grounded, pin 4 of the CAN bus isolation unit U18 is connected to a 3.3V power supply and capacitor C26, pin 5 of the CAN bus isolation unit U18 is connected to TVS diode TV4 and TVS diode TV6, pin 6 of the CAN bus isolation unit U18 is connected to pin 12 of terminal H3, TVS diode TV5 and TVS diode TV6, pin 7 of the CAN bus isolation unit U18 is connected to pin 13 of terminal H3, TVS diode TV4 and TVS diode C26. The diode TV5, the pin 1 of the operational amplifier chip U20 is connected to the pin 2 of the operational amplifier chip U20 and the resistor R10, the pin 3 of the operational amplifier chip U20 is connected to the resistor R9 and the capacitor C17, the pin 4 of the operational amplifier chip U20 is connected to the analog ground, the pin 5 of the operational amplifier chip U20 is connected to the resistor R11 and the capacitor C19, the pin 6 of the operational amplifier chip U20 is connected to the pin 7 of the operational amplifier chip U20 and the resistor R12, the pin 8 of the operational amplifier chip U20 is connected to the A5V power supply and the capacitor C 15. Pin 1 of the operational amplifier chip U21 is connected to pin 2 of the operational amplifier chip U21 and resistor R16, pin 3 of the operational amplifier chip U21 is connected to resistor R15 and capacitor C23, pin 4 of the operational amplifier chip U21 is connected to analog ground, pin 5 of the operational amplifier chip U21 is connected to resistor R17 and capacitor C24, pin 6 of the operational amplifier chip U21 is connected to pin 7 of the operational amplifier chip U21 and resistor R18, and pin 8 of the operational amplifier chip U21 is connected to A5V power supply and capacitor C20.

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