Main station electric control device for distributed spray dust removal system

Abstract

The utility model discloses a master station electric control device for a distributed spray dust removal system, the master station electric control device is matched with a slave station electric control device, the master station electric control device comprises a LoRa control circuit, a data transmission assembly and a ball valve control circuit, and the signal input end of the ball valve control circuit is electrically connected with the signal output end of the LoRa control circuit; the system further comprises a ball valve current collecting circuit, the signal input end of the ball valve current collecting circuit is electrically connected with the signal output end of the ball valve control circuit, and the ball valve current collecting circuit is further electrically connected with the LoRa control circuit through the ADC front end circuit and achieves bidirectional signal interaction. According to the technical scheme, two functions of hardware control and remote communication are realized by using the LoRa control circuit, the advantages of convenient deployment, wide coverage range and the like of a distributed industrial control system are maintained, the overall operation power consumption is reduced, and the response efficiency is improved.

Description

Technical Field

[0001] The present application relates to a master station electronic control device used in a distributed system, specifically a master station electronic control device for a distributed spray dust removal system, and belongs to the technical field of industrial control equipment. Background Art

[0002] Spray dust suppression systems are a common dust suppression solution used in industrial production environments today. They are widely used in various scenarios requiring effective control of airborne dust and improved air quality, such as mineral mining and processing, construction, logistics and warehousing, urban street purification, and workshop production. With the increasing scale of industrial production in my country, the application of spray dust removal systems has become more extreme, and the requirements for the entire system's scope of action have gradually increased. To this end, distributed spray dust removal systems have emerged.

[0003] In the industrial control sector, distributed industrial control systems are built around two devices: a master station and slave stations. A single master station controls multiple slave stations to perform operations such as data communication and business management. Their scope and scale far exceed those of non-distributed systems. Traditional distributed industrial control systems utilize wired connections, connecting the master and slave stations via cables to form a wired network. This wired network provides real-time monitoring and management of controlled devices. However, this wired networking approach is foreseeable to cover large control areas, and in practice, often encounters issues such as cumbersome wiring, high construction costs, and lengthy network construction cycles.

[0004] In recent years, distributed industrial control systems based on wireless networking have emerged. While these systems address many of the drawbacks of wired networking, they still have several shortcomings. First, these wirelessly networked distributed industrial control systems perform poorly in terms of energy consumption and standby time, making them difficult to directly apply to distributed spray dust removal systems that require long-term use. Second, in these wirelessly networked distributed industrial control systems, slave stations generally only serve as data transmission mechanisms, and control of actuators relies primarily on control commands issued by the master station. However, due to limitations in the coverage and transmission efficiency of wireless communication networks, existing wireless networking solutions exhibit poor response efficiency. For dust removal operations in industrial environments, real-time performance and high efficiency are two important considerations. Therefore, current wireless networking solutions are difficult to apply to distributed spray dust removal systems.

[0005] Therefore, how to propose an electronic control solution that is truly suitable for distributed spray dust removal systems, while retaining the flexibility and convenience of wireless networking, to achieve low operating power consumption and high response efficiency for some hardware and the entire system, has become an urgent problem to be solved by technicians in this field. Summary of the Invention

[0006] In order to better adapt to the distributed spray dust removal system, while retaining the flexibility and convenience of wireless networking, low operating power consumption and high response efficiency of some hardware and the entire system are achieved. This application provides a master station electronic control device for a distributed spray dust removal system.

[0007] The present application provides a master station electronic control device for a distributed spray dust removal system that adopts the following technical solutions:

[0008] A master station electronic control device for a distributed spray dust removal system, coordinated with a slave station electronic control device, includes a LoRa control circuit for data processing and wireless communication with the slave station electronic control device, a data transmission component for uplink / downlink data transmission, and a ball valve control circuit for controlling the on / off state of a ball valve in external spray dust removal hardware. The signal input terminal of the ball valve control circuit is electrically connected to the signal output terminal of the LoRa control circuit.

[0009] It also includes a ball valve current acquisition circuit for real-time detection of the working status current of the ball valve part in the external spray dust removal hardware. The signal input end of the ball valve current acquisition circuit is electrically connected to the signal output end of the ball valve control circuit. The ball valve current acquisition circuit is also electrically connected to the LoRa control circuit through the ADC pre-circuit to realize two-way signal interaction.

[0010] By adopting the above technical solution, the LoRa control circuit is used to realize both hardware control and remote communication functions. Compared with the master station control part in the existing technology, this solution not only maintains many advantages such as high construction flexibility, convenient deployment, wider coverage, and more connected devices, but also realizes long-term low-power operation of some hardware and the entire system, significantly improving the overall response efficiency of the distributed dust removal spray system.

[0011] Preferably, the data transmission component includes an Ethernet communication circuit for completing data uplink and completing data transmission from Ethernet to the cloud, and the Ethernet communication circuit is electrically connected to an RJ45 interface;

[0012] The data transmission component also includes a LoRa communication circuit and an RS485 communication circuit for completing data downlink and realizing communication connection with the slave station electronic control device;

[0013] The Ethernet communication circuit, the LoRa communication circuit and the RS485 communication circuit are all electrically connected to the LoRa control circuit to achieve two-way signal interaction.

[0014] By adopting the above technical solution, the hardware deployment form of data transmission in this solution is clarified, which ensures the uplink / downlink transmission of data during the application of this device, and maximizes the accessibility and availability of data during the long-term operation of the device.

[0015] Preferably, the LoRa control circuit includes a BLE control chip, the BLE control chip realizes signal transmission with the Ethernet chip in the Ethernet communication circuit through SPI, and the BLE control chip realizes signal transmission with the ADC acquisition chip in the ADC pre-circuit through IIC;

[0016] The BLE control chip is also electrically connected to a USB interface component that can realize firmware downloading and two-way signal interaction.

[0017] By adopting the above technical solution, the signal processing and data transmission functions of the BLE control chip are rationally utilized, which further controls hardware costs, reduces energy consumption, greatly expands the applicability of the solution, and improves the overall market competitiveness of the device.

[0018] Preferably, it also includes an interactive component for realizing human-computer interaction, and the interactive component includes any one or more combinations of buttons, touchpads, indicator lights, buzzers and display screens. The interactive component is electrically connected to the BLE control chip and realizes two-way signal interaction.

[0019] By adopting the above technical solution, the hardware deployment form of human-computer interaction in this solution is clarified, which provides convenience for the operator's daily application.

[0020] Preferably, the device further comprises an intrinsically safe power supply for supplying power to various components in the device, the intrinsically safe power supply being electrically connected to the first power input terminal of the ball valve control circuit, and the intrinsically safe power supply being electrically connected to the first voltage conversion circuit and the second voltage conversion circuit respectively;

[0021] The intrinsically safe power supply is electrically connected to the USB interface component, the RS485 communication circuit and the second power input terminal of the ball valve control circuit respectively through the first voltage conversion circuit;

[0022] The intrinsically safe power supply is electrically connected to the LoRa control circuit, the LoRa communication circuit, the Ethernet communication circuit, the ball valve current acquisition circuit and the interactive component respectively through the second voltage conversion circuit.

[0023] By adopting the above technical solution, the specific settings and adaptation methods of the power supply part in this solution are clarified and optimized, which not only enables the entire device to adapt to different application scenarios, but also provides the premise and basis for the long-term stable operation of subsequent devices.

[0024] Preferably, the LoRa communication circuit includes a LoRa module, the VCC port of the LoRa module serves as the power input terminal of the LoRa communication circuit, the LoRa module is electrically connected to a debug interface and a download interface, the ANT port of the LoRa module is electrically connected to the first end of the IEPX antenna base via a first resistor, the input and output ends of the first resistor are electrically connected to the first end of the first capacitor and the first end of the first inductor, respectively, and the second ends of the IEPX antenna base, the first capacitor and the first inductor are all electrically connected to DGND.

[0025] By adopting the above technical solution, the hardware deployment for LoRa communication in this solution was clarified. Based on LoRa technology, the device achieves long-range wireless communication while maintaining low power consumption, typically with a coverage range of several kilometers, making it particularly suitable for remote or difficult-to-wire industrial environments. LoRa technology supports dense device connectivity, allowing the device to exchange data with numerous devices concurrently on the same network, improving the system's scalability and connectivity. Furthermore, LoRa technology offers the advantage of rapid response, making it ideal for applications requiring real-time monitoring. Furthermore, LoRa technology supports spread spectrum operation, maintaining excellent communication quality in noisy environments. This ensures high-quality communication even in environments with strong electromagnetic interference, maximizing communication stability and reliability.

[0026] Preferably, the ball valve control circuit includes at least one set of ball valve control sub-circuit.

[0027] Preferably, the ball valve control circuit comprises a first ball valve control subcircuit and a second ball valve control subcircuit, the first ball valve control subcircuit and the second ball valve control subcircuit have the same structure and share a solid-state relay.

[0028] Preferably, the first ball valve control subcircuit corresponds to the first ball valve portion in the external spray dust removal hardware, and includes a first PMOS transistor and a first NPN transistor. The source of the first PMOS transistor is electrically connected to the first ends of the second capacitor, the second resistor, and the first zener diode, respectively. The second end of the second capacitor is electrically connected to DGND. The second ends of the second resistor and the first zener diode are both electrically connected to the gate of the first PMOS transistor. The drain of the first PMOS transistor is electrically connected to the first end of the third capacitor and the first ball valve power interface, respectively. The second end of the third capacitor is electrically connected to DGND. The gate of the first PMOS transistor is electrically connected to the collector of the first NPN transistor via the third resistor. The base of the first NPN transistor is electrically connected to the first ends of the fourth resistor and the fifth resistor. The emitter of the first NPN transistor is electrically connected to the second end of the fifth resistor and DGND.

[0029] The first ball valve control subcircuit also includes a second NPN transistor, the base of the second NPN transistor is electrically connected to the first end of the sixth resistor and the seventh resistor, the second end of the seventh resistor and the emitter of the second NPN transistor are electrically connected to DGND, and the collector of the second NPN transistor is electrically connected to the solid-state relay via the eighth resistor.

[0030] Preferably, the second ball valve control subcircuit corresponds to the second ball valve portion in the external spray dust removal hardware, and the second ball valve control subcircuit includes a second PMOS transistor and a third NPN transistor. The source of the second PMOS transistor is electrically connected to the first ends of the fourth capacitor, the ninth resistor, and the second Zener diode, respectively. The second end of the fourth capacitor is electrically connected to DGND. The second ends of the ninth resistor and the second Zener diode are both electrically connected to the gate of the second PMOS transistor. The drain of the second PMOS transistor is electrically connected to the first end of the fifth capacitor and the second ball valve power interface, respectively. The second end of the fifth capacitor is electrically connected to DGND. The gate of the second PMOS transistor is electrically connected to the collector of the third NPN transistor via the tenth resistor. The base of the third NPN transistor is electrically connected to the first ends of the eleventh resistor and the twelfth resistor. The emitter of the third NPN transistor is electrically connected to the second end of the twelfth resistor and DGND.

[0031] The second ball valve control subcircuit further includes a fourth NPN transistor, the base of the fourth NPN transistor is electrically connected to the first end of the thirteenth resistor and the fourteenth resistor, the second end of the fourteenth resistor and the emitter of the fourth NPN transistor are electrically connected to DGND, and the collector of the fourth NPN transistor is electrically connected to the solid-state relay via the fifteenth resistor.

[0032] By adopting the above technical solution, the hardware deployment form of the ball valve control part in this solution is clarified, which ensures the linkage response between this device and the ball valve part in the external spray dust removal hardware, ensures the overall response efficiency of the system from the hardware level, and improves the real-time and efficiency of dust removal operations in industrial environments.

[0033] In summary, this application has at least the following beneficial effects:

[0034] This application realizes both hardware control and remote communication functions based on the LoRa control circuit in the solution through the efficient use of LoRa communication technology. Compared with the existing technology, this solution not only maintains many advantages such as high construction flexibility, convenient deployment, wider coverage, and more connected devices, but also realizes long-term low-power operation of some hardware and the entire system, significantly improving the overall response efficiency of the distributed dust removal spray system.

[0035] At the same time, the design and optimization of the circuit structure of this application further controls hardware costs, reduces energy consumption, greatly expands the applicability of the solution, and improves the overall market competitiveness of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a schematic diagram of the connection circuit of a master station electronic control device for a distributed spray dust removal system in an embodiment of the present application;

[0037] Figure 2 This is a schematic diagram of the connection circuit of the LoRa control circuit in the embodiment of the present application;

[0038] Figure 3 This is a schematic diagram of the connection circuit of the LoRa communication circuit in the embodiment of the present application;

[0039] Figure 4 This is a schematic diagram of the connection circuit of the ball valve control circuit in the embodiment of the present application;

[0040] Among them: 1. BLE control chip; 2. BOOT interface; 3. LoRa module; 4. Debug interface; 5. Download interface; 6. First resistor; 7. IEPX antenna base; 8. First capacitor; 9. Inductor; 10. Solid-state relay; 11. First PMOS tube; 12. First NPN transistor; 13. Second capacitor; 14. Second resistor; 15. First voltage regulator diode; 16. Third capacitor; 17. First ball valve power interface; 18. Third resistor; 19. Fourth resistor; 20. Fifth resistor 21. Second NPN transistor; 22. Sixth resistor; 23. Seventh resistor; 24. Eighth resistor; 25. Second PMOS tube; 26. Third NPN transistor; 27. Fourth capacitor; 28. Ninth resistor; 29. ​​Second voltage regulator diode; 30. Fifth capacitor; 31. Second ball valve power interface; 32. Tenth resistor; 33. Eleventh resistor; 34. Twelfth resistor; 35. Fourth NPN transistor; 36. Thirteenth resistor; 37. Fourteenth resistor; 38. Fifteenth resistor. DETAILED DESCRIPTION

[0041] The present application provides a master station electronic control device for a distributed spray dust removal system. In order to make the purpose, technical solution and advantages of the present application clearer, the implementation method of the present application will be further described in detail below.

[0042] A specific embodiment of the present application is described in further detail below with reference to the accompanying drawings.

[0043] like Figure 1 As shown, a master station electronic control device for a distributed spray dust removal system cooperates with a slave station electronic control device (not shown in the figure), including a LoRa control circuit for data processing and realizing wireless communication with the slave station electronic control device, a data transmission component for realizing uplink / downlink data transmission, and a ball valve control circuit for controlling the on / off state of the ball valve part (not shown in the figure) in the external spray dust removal hardware. The signal input end of the ball valve control circuit is electrically connected to the signal output end of the LoRa control circuit.

[0044] The master station electronic control device for the distributed spray dust removal system also includes a ball valve current acquisition circuit for real-time detection of the working status current of the ball valve part in the external spray dust removal hardware. The signal input end of the ball valve current acquisition circuit is electrically connected to the signal output end of the ball valve control circuit. The ball valve current acquisition circuit is also electrically connected to the LoRa control circuit through the ADC pre-circuit to realize two-way signal interaction.

[0045] In this embodiment, the data transmission component includes an Ethernet communication circuit for completing data uplink and transmitting data from Ethernet to the cloud, and the Ethernet communication circuit is electrically connected to an RJ45 interface. The data transmission component also includes a LoRa communication circuit and an RS485 communication circuit for completing data downlink and achieving communication connection with the slave station electronic control device. It should be noted here that in terms of connection relationship, the Ethernet communication circuit, the LoRa communication circuit, and the RS485 communication circuit are all electrically connected to the LoRa control circuit to achieve two-way signal exchange.

[0046] When the distributed spray dust removal system uses the master station electronic control device to receive data uploaded by the downlink sensor, if the data value exceeds the threshold, the LoRa control circuit controls the switch of the ball valve part in the external spray dust removal hardware, opens the ball valve, and at the same time detects the working status current of the ball valve in real time and reports the data to the cloud.

[0047] like Figure 2 As shown, the LoRa control circuit includes a BLE control chip 1. In this embodiment, the 3V3 port on the BLE control chip 1 serves as the power input terminal of the LoRa control circuit. The BLE control chip 1 realizes signal transmission with the Ethernet chip in the Ethernet communication circuit through SPI, and the BLE control chip 1 realizes signal transmission with the ADC acquisition chip in the ADC pre-circuit through IIC. In addition, the BLE control chip 1 is also electrically connected to a USB interface component that can realize firmware download and two-way signal interaction. A BOOT interface 2 that can realize the BOOT function is also electrically connected to the IO interface of the BLE control chip 1.

[0048] The master station electronic control device for the distributed spray dust removal system also includes an interactive component for realizing human-computer interaction. The interactive component includes any one or more combinations of buttons, a touchpad, an indicator light, a buzzer, and a display screen. In this embodiment, the interactive component includes buttons and a display screen. In terms of connection relationship, the interactive component is electrically connected to the BLE control chip 1 to realize two-way signal exchange.

[0049] To ensure power-on operation of the device, the master station electronic control device for the distributed spray dust removal system also includes an intrinsically safe power supply for powering various components within the device. The intrinsically safe power supply outputs a 12V voltage and is electrically connected to the first power input terminal of the ball valve control circuit. The intrinsically safe power supply is also electrically connected to a first voltage conversion circuit and a second voltage conversion circuit. In this embodiment only, the first voltage conversion circuit is preferably a 12V to 5V step-down circuit, and the second voltage conversion circuit is preferably a 12V to 3.3V step-down circuit.

[0050] The intrinsically safe power supply is electrically connected to the USB interface component, the RS485 communication circuit and the second power input terminal of the ball valve control circuit respectively through the first voltage conversion circuit.

[0051] The intrinsically safe power supply is electrically connected to the LoRa control circuit, the LoRa communication circuit, the Ethernet communication circuit, the ball valve current acquisition circuit and the interactive component respectively through the second voltage conversion circuit.

[0052] like Figure 3 As shown, the LoRa communication circuit includes a LoRa module 3, the VCC port of the LoRa module 3 serves as the power input terminal of the LoRa communication circuit, the LoRa module 3 is electrically connected to a debug interface 4 and a download interface 5, respectively, the ANT port of the LoRa module 3 is electrically connected to the first end of the IEPX antenna base 7 via a first resistor 6, the IEPX antenna base 7 is electrically connected to a LoRa antenna, the input and output ends of the first resistor 6 are electrically connected to the first end of the first capacitor 8 and the first end of the inductor 9, respectively, and the second ends of the IEPX antenna base 7, the first capacitor 8 and the inductor 9 are all electrically connected to DGND.

[0053] It should be emphasized that the ball valve control circuit is mainly used to control the spray dust removal. This part of the circuit has two power inputs, of which the 12V power supply is used to power the ball valve part in the external spray dust removal hardware, and the 5V power supply is used to power the optocoupler isolation module.

[0054] The ball valve control circuit includes at least one ball valve control sub-circuit. Figure 4 As shown, the ball valve control circuit includes a first ball valve control subcircuit and a second ball valve control subcircuit. The first ball valve control subcircuit and the second ball valve control subcircuit have the same structure and share a solid-state relay 10.

[0055] The following describes in detail the structures of the first ball valve control subcircuit and the second ball valve control subcircuit in this solution with reference to the accompanying drawings.

[0056] The first ball valve control subcircuit corresponds to the first ball valve part in the external spray dust removal hardware. The first ball valve control subcircuit includes a first PMOS tube 11 and a first NPN transistor 12. The source of the first PMOS tube 11 is electrically connected to the first ends of the second capacitor 13, the second resistor 14 and the first Zener diode 15 respectively. The second end of the second capacitor 13 is electrically connected to DGND. The second ends of the second resistor 14 and the first Zener diode 15 are both electrically connected to the gate of the first PMOS tube 11. The first PMOS tube 11 The drain is electrically connected to the first end of the third capacitor 16 and the second port of the first ball valve power interface 17 respectively, the third port of the first ball valve power interface 17 is grounded, the second end of the third capacitor 16 is electrically connected to DGND, the gate of the first PMOS tube 11 is electrically connected to the collector of the first NPN transistor 12 through the third resistor 18, the base of the first NPN transistor 12 is electrically connected to the first end of the fourth resistor 19 and the fifth resistor 20, and the emitter of the first NPN transistor 12 is electrically connected to the second end of the fifth resistor 20 and DGND.

[0057] The first ball valve control subcircuit further includes a second NPN transistor 21, the base of the second NPN transistor 21 is electrically connected to the first end of the sixth resistor 22 and the seventh resistor 23, the second end of the seventh resistor 23 and the emitter of the second NPN transistor 21 are electrically connected to DGND, and the collector of the second NPN transistor 21 is electrically connected to the second port of the solid-state relay 10 via the eighth resistor 24.

[0058] The second ball valve control subcircuit corresponds to the second ball valve part in the external spray dust removal hardware. The second ball valve control subcircuit includes a second PMOS tube 25 and a third NPN transistor 26. The source of the second PMOS tube 25 is electrically connected to the first ends of the fourth capacitor 27, the ninth resistor 28 and the second Zener diode 29 respectively. The second end of the fourth capacitor 27 is electrically connected to DGND. The second ends of the ninth resistor 28 and the second Zener diode 29 are both electrically connected to the gate of the second PMOS tube 25. The drain of the second PMOS tube 25 is electrically connected to the gate of the second PMOS tube 25. The electrodes are respectively electrically connected to the first end of the fifth capacitor 30 and the second port of the second ball valve power interface 31, the third port of the second ball valve power interface 31 is grounded, the second end of the fifth capacitor 30 is electrically connected to DGND, the gate of the second PMOS tube 25 is electrically connected to the collector of the third NPN transistor 26 through the tenth resistor 32, the base of the third NPN transistor 26 is electrically connected to the eleventh resistor 33 and the first end of the twelfth resistor 34, and the emitter of the third NPN transistor 26 is electrically connected to the second end of the twelfth resistor 34 and DGND.

[0059] The second ball valve control subcircuit further includes a fourth NPN transistor 35, the base of the fourth NPN transistor 35 is electrically connected to the first end of the thirteenth resistor 36 and the fourteenth resistor 37, the second end of the fourteenth resistor 37 and the emitter of the fourth NPN transistor 35 are electrically connected to DGND, and the collector of the fourth NPN transistor 35 is electrically connected to the fourth port of the solid-state relay 10 via the fifteenth resistor 38.

[0060] The first and third ports of the solid-state relay 10 are electrically connected to red and blue indicator lights, respectively, for correspondingly displaying operating information of the relevant sub-circuits.

[0061] Finally, it should be understood that the term "plurality" used herein refers to two or more. "And / or" describes a relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" could mean: A exists alone, A and B exist simultaneously, or B exists alone. The character " / " generally indicates an "or" relationship between the associated objects.

[0062] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A master station electronic control device for a distributed spray dust removal system, coordinated with a slave station electronic control device, characterized by: It includes a LoRa control circuit for data processing and realizing wireless communication with the slave station electronic control device, a data transmission component for realizing uplink / downlink data transmission, and a ball valve control circuit for controlling the on / off state of the ball valve part in the external spray dust removal hardware, and the signal input end of the ball valve control circuit is electrically connected to the signal output end of the LoRa control circuit; It also includes a ball valve current acquisition circuit for real-time detection of the working status current of the ball valve part in the external spray dust removal hardware. The signal input end of the ball valve current acquisition circuit is electrically connected to the signal output end of the ball valve control circuit. The ball valve current acquisition circuit is also electrically connected to the LoRa control circuit through the ADC pre-circuit to realize two-way signal interaction.

2. The master station electronic control device for a distributed spray dust removal system according to claim 1, characterized in that: The data transmission component includes an Ethernet communication circuit for completing data uplink and completing data transmission from Ethernet to the cloud, and the Ethernet communication circuit is electrically connected to an RJ45 interface; The data transmission component also includes a LoRa communication circuit and an RS485 communication circuit for completing data downlink and realizing communication connection with the slave station electronic control device; The Ethernet communication circuit, the LoRa communication circuit and the RS485 communication circuit are all electrically connected to the LoRa control circuit to achieve two-way signal interaction.

3. The master station electronic control device for the distributed spray dust removal system according to claim 2, characterized in that: The LoRa control circuit comprises a BLE control chip (1), wherein the BLE control chip (1) realizes signal transmission with the Ethernet chip in the Ethernet communication circuit via SPI, and the BLE control chip (1) realizes signal transmission with the ADC acquisition chip in the ADC pre-circuit via IIC; The BLE control chip (1) is also electrically connected to a USB interface component that can realize firmware downloading and bidirectional signal interaction.

4. The master station electronic control device for the distributed spray dust removal system according to claim 3 is characterized in that: It also includes an interactive component for realizing human-computer interaction, wherein the interactive component includes any one or more combinations of buttons, a touch panel, an indicator light, a buzzer, and a display screen, and the interactive component is electrically connected to the BLE control chip (1) to realize two-way signal interaction.

5. The master station electronic control device for the distributed spray dust removal system according to claim 4 is characterized in that: It also includes an intrinsically safe power supply for supplying power to various components in the device, the intrinsically safe power supply is electrically connected to the first power input terminal of the ball valve control circuit, and the intrinsically safe power supply is electrically connected to the first voltage conversion circuit and the second voltage conversion circuit respectively; The intrinsically safe power supply is electrically connected to the USB interface component, the RS485 communication circuit and the second power input terminal of the ball valve control circuit respectively through the first voltage conversion circuit; The intrinsically safe power supply is electrically connected to the LoRa control circuit, the LoRa communication circuit, the Ethernet communication circuit, the ball valve current acquisition circuit and the interactive component respectively through the second voltage conversion circuit.

6. The master station electronic control device for the distributed spray dust removal system according to claim 5, characterized in that: The LoRa communication circuit comprises a LoRa module (3), a VCC port of the LoRa module (3) serving as a power input terminal of the LoRa communication circuit, the LoRa module (3) being electrically connected to a debugging interface (4) and a download interface (5), an ANT port of the LoRa module (3) being electrically connected to a first end of an IEPX antenna base (7) via a first resistor (6), an input end and an output end of the first resistor (6) being electrically connected to a first end of a first capacitor (8) and a first end of an inductor (9), respectively, and the second ends of the IEPX antenna base (7), the first capacitor (8) and the inductor (9) being electrically connected to DGND.

7. The master station electronic control device for the distributed spray dust removal system according to claim 5, characterized in that: The ball valve control circuit includes at least one set of ball valve control sub-circuit.

8. The master station electronic control device for a distributed spray dust removal system according to claim 5, characterized in that: The ball valve control circuit comprises a first ball valve control subcircuit and a second ball valve control subcircuit, the first ball valve control subcircuit and the second ball valve control subcircuit have the same structure and share a solid-state relay (10).

9. The master station electronic control device for the distributed spray dust removal system according to claim 8, characterized in that: The first ball valve control subcircuit corresponds to the first ball valve part in the external spray dust removal hardware. The first ball valve control subcircuit includes a first PMOS tube (11) and a first NPN transistor (12). The source of the first PMOS tube (11) is electrically connected to the first ends of the second capacitor (13), the second resistor (14) and the first voltage stabilizing diode (15). The second end of the second capacitor (13) is electrically connected to DGND. The second ends of the second resistor (14) and the first voltage stabilizing diode (15) are both electrically connected to the gate of the first PMOS tube (11). The drain of the first PMOS tube (11) is electrically connected to the first end of the third capacitor (16) and the first ball valve power interface (17), respectively; the second end of the third capacitor (16) is electrically connected to DGND; the gate of the first PMOS tube (11) is electrically connected to the collector of the first NPN transistor (12) via the third resistor (18); the base of the first NPN transistor (12) is electrically connected to the first end of the fourth resistor (19) and the fifth resistor (20); the emitter of the first NPN transistor (12) is electrically connected to the second end of the fifth resistor (20) and DGND; The first ball valve control subcircuit further includes a second NPN transistor (21), the base of the second NPN transistor (21) is electrically connected to the first end of the sixth resistor (22) and the seventh resistor (23), the second end of the seventh resistor (23) and the emitter of the second NPN transistor (21) are both electrically connected to DGND, and the collector of the second NPN transistor (21) is electrically connected to the solid-state relay (10) via the eighth resistor (24).

10. The master station electronic control device for the distributed spray dust removal system according to claim 8, characterized in that: The second ball valve control subcircuit corresponds to the second ball valve part in the external spray dust removal hardware. The second ball valve control subcircuit includes a second PMOS tube (25) and a third NPN transistor (26). The source of the second PMOS tube (25) is electrically connected to the first ends of the fourth capacitor (27), the ninth resistor (28) and the second voltage stabilizing diode (29). The second end of the fourth capacitor (27) is electrically connected to DGND. The second ends of the ninth resistor (28) and the second voltage stabilizing diode (29) are both electrically connected to the gate of the second PMOS tube (25). The drain of the second PMOS transistor (25) is electrically connected to the first end of the fifth capacitor (30) and the second ball valve power interface (31), respectively; the second end of the fifth capacitor (30) is electrically connected to DGND; the gate of the second PMOS transistor (25) is electrically connected to the collector of the third NPN transistor (26) via the tenth resistor (32); the base of the third NPN transistor (26) is electrically connected to the first end of the eleventh resistor (33) and the twelfth resistor (34); the emitter of the third NPN transistor (26) is electrically connected to the second end of the twelfth resistor (34) and DGND; The second ball valve control subcircuit further includes a fourth NPN transistor (35), the base of the fourth NPN transistor (35) is electrically connected to the first end of the thirteenth resistor (36) and the fourteenth resistor (37), the second end of the fourteenth resistor (37) and the emitter of the fourth NPN transistor (35) are both electrically connected to DGND, and the collector of the fourth NPN transistor (35) is electrically connected to the solid-state relay (10) via the fifteenth resistor (38).

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