Slave station electric control device for distributed spray dust removal system

Abstract

The utility model discloses a slave station electric control device for a distributed spray dust removal system, which is matched with a master station electric control device and comprises a master control module, a data transmission assembly and a ball valve control assembly, the data transmission assembly comprises a LoRa communication circuit, the ball valve control assembly comprises a ball valve power supply control and current detection circuit and a ball valve control interface circuit, and the ball valve power supply control and current detection circuit is electrically connected with a ball valve part in external spraying dust removal hardware through the ball valve control interface circuit; the LoRa communication circuit and the ball valve power supply control and current detection circuit are both electrically connected with the main control module and achieve bidirectional signal interaction. According to the technical scheme, the two functions of hardware control and remote communication are achieved, the advantages that a distributed industrial control system is convenient to deploy, wide in coverage range and the like are kept, meanwhile, the overall operation power consumption is reduced, and the response efficiency is improved.

Description

Technical Field

[0001] The present application relates to a slave station electronic control device used in a distributed system, specifically a slave 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 slave station electronic control device for a distributed spray dust removal system.

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

[0008] A slave station electronic control device for a distributed spray dust removal system, which cooperates with a master station electronic control device and includes a main control module for data processing, a data transmission component for data transmission and wireless communication with the master station electronic control device, and a ball valve control component for controlling the on / off state of the ball valve part of the external spray dust removal hardware;

[0009] The data transmission component includes a LoRa communication circuit, and the ball valve control component includes a ball valve power supply control and current detection circuit and a ball valve control interface circuit. The ball valve power supply control and current detection circuit is electrically connected to the ball valve part in the external spray dust removal hardware via the ball valve control interface circuit. Both the LoRa communication circuit and the ball valve power supply control and current detection circuit are electrically connected to the main control module to realize two-way signal interaction.

[0010] By adopting the above technical solution, the main control module is used to realize the two functions of hardware control and remote communication. Compared with the slave 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] At the same time, this device has added a ball valve control component, which realizes direct control and linkage response of the ball valve part of the external spray dust removal hardware, ensuring the overall response efficiency of the system from the hardware level, and improving the real-time and efficiency of dust removal operations in industrial environments.

[0012] 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 inductor, respectively, and the second ends of the IEPX antenna base, the first capacitor and the inductor are all electrically connected to DGND.

[0013] 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.

[0014] Preferably, the data transmission component further includes an RS485 circuit, which is electrically connected to the main control module and realizes bidirectional signal interaction.

[0015] By adopting the above technical solution, the hardware deployment form of data transmission in this solution is further clarified, the data transmission during the application of this device is guaranteed, and the accessibility and availability of data during the long-term operation of the device are maximized.

[0016] Preferably, it further includes an interactive component for realizing human-computer interaction, the interactive component is electrically connected to the main control module, and the interactive component at least includes a key circuit, a display screen and an LED indicator light.

[0017] 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.

[0018] Preferably, it also includes a power supply component for powering various components in the device and completing adaptive voltage regulation, the power supply component includes a battery power supply and an intrinsically safe power supply, both the battery power supply and the intrinsically safe power supply are electrically connected to the input end of the power switching circuit, the output end of the power switching circuit is electrically connected to the voltage regulation component and the battery voltage detection circuit respectively, and the power switching circuit is electrically connected to the main control module via the battery voltage detection circuit.

[0019] Preferably, the power switching circuit includes an intrinsically safe power interface and a battery power interface;

[0020] The first end of the intrinsically safe power interface is electrically connected to the first ends of the second resistor, the first TVS tube, the second capacitor, and the common-mode filter, respectively. The second end of the intrinsically safe power interface is electrically connected to the first end of the third capacitor and the drain of the NMOS tube, respectively. The third end of the intrinsically safe power interface and the second end of the third capacitor are both grounded. The gate of the NMOS tube is electrically connected to the second end of the second resistor, and the source of the NMOS tube is electrically connected to the second ends of the first TVS tube, the second capacitor, and the common-mode filter, respectively.

[0021] The first end of the battery power interface is electrically connected to the first ends of the third TVS tube, the second TVS tube, the fourth capacitor, and the third end of the common mode filter respectively;

[0022] The fourth end of the common-mode filter is electrically connected to the second ends of the fourth capacitor and the second TVS transistor, respectively. The fourth end of the common-mode filter is electrically connected to the first end of the fifth capacitor and the source of the first PMOS transistor via a first fuse. The gate of the first PMOS transistor is electrically connected to the second end of the fifth capacitor and the first end of the third resistor, respectively. The second end of the third resistor is electrically connected to GND.

[0023] The drain of the first PMOS transistor is electrically connected to the first end of the fourth resistor, the emitter of the PNP transistor, the first end of the sixth capacitor, and the source of the second PMOS transistor, respectively; the second end of the fourth resistor is electrically connected to the cathode of the first voltage-stabilizing diode and the first end of the fifth resistor, respectively; the anode of the first voltage-stabilizing diode is electrically connected to GND; the second end of the fifth resistor is electrically connected to the base of the PNP transistor; the collector of the PNP transistor is electrically connected to the second end of the sixth capacitor, the gate of the second PMOS transistor, and the first end of the sixth resistor, respectively; and the second end of the sixth resistor is electrically connected to GND;

[0024] The drain of the second PMOS transistor is electrically connected to the first ends of the seventh resistor and the eighth resistor, respectively. The second end of the seventh resistor is electrically connected to GND via the LED light-emitting component. The second end of the eighth resistor is electrically connected to GND. The drain of the second PMOS transistor is electrically connected to the output port of the power switching circuit via the first anti-reverse diode and the second anti-reverse diode in sequence.

[0025] The second end of the battery power interface is electrically connected to the second end of the third TVS transistor. The second end of the battery power interface is electrically connected to the output port of the power switching circuit in sequence through a second fuse and a third anti-reverse diode. The anode of the third anti-reverse diode is electrically connected to the drain of the third PMOS transistor. The cathode of the third anti-reverse diode is electrically connected to the source of the third PMOS transistor. The gate of the third PMOS transistor is electrically connected to the drain of the second PMOS transistor and the first end of the eighth resistor, respectively.

[0026] A second Zener diode and a third Zener diode are also provided in front of the output port of the power switching circuit. The cathodes of the second Zener diode and the third Zener diode are electrically connected, and the anodes of the second Zener diode and the third Zener diode are electrically connected to GND.

[0027] Preferably, the main control module is also electrically connected to an input switch interface circuit, an external FLASH, a main control module debugging interface and a Bluetooth antenna.

[0028] Preferably, the voltage regulation component includes a first voltage regulation circuit, a second voltage regulation circuit and a third voltage regulation circuit; the power switching circuit is electrically connected to the ball valve power supply control and current detection circuit via the first voltage regulation circuit, the power switching circuit is electrically connected to the display screen and the RS485 circuit respectively via the second voltage regulation circuit, and the power switching circuit is electrically connected to the RS485 circuit, the LoRa communication circuit, the input switch interface circuit and the key circuit respectively via the third voltage regulation circuit.

[0029] By adopting the above technical solution, the specific settings and adaptation methods of the power supply part in this solution are clarified and optimized, ensuring that both battery power supply and intrinsically safe power supply can power the device. This not only enables the entire device to adapt to different application scenarios, but also provides the premise and foundation for the long-term stable operation of subsequent devices.

[0030] Preferably, it also includes a switch component for controlling the operating status of each part in the device, and the switch component includes a main power switch, a battery voltage detection power supply switch, a display power supply control switch, a first RS485 power supply control switch, a second RS485 power supply control switch, a LoRa communication power supply control switch, an input switch power supply control switch and a FLASH power supply control switch.

[0031] Preferably, the main power switch is arranged between the power supply component and the power switching circuit, the battery voltage detection power switch is arranged between the power switching circuit and the battery voltage detection circuit, the display screen power supply control switch is arranged between the second voltage regulation circuit and the display screen, the first RS485 power supply control switch is arranged between the second voltage regulation circuit and the RS485 circuit, the second RS485 power supply control switch is arranged between the third voltage regulation circuit and the RS485 circuit, the LoRa communication power supply control switch is arranged between the third voltage regulation circuit and the LoRa communication circuit, the input switch power supply control switch is arranged between the third voltage regulation circuit and the input switch interface circuit, and the FLASH power supply control switch is arranged between the main control module and the external FLASH.

[0032] By adopting the above technical solution, independent control of the operating status of each part of the device is achieved, making the device as a whole more variable and adjustable, meeting the actual application needs of the operator as much as possible, and improving the overall market competitiveness of the device.

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

[0034] This application realizes the two functions of hardware control and remote communication based on the main control module 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 circuit connection of a slave station electronic control device for a distributed spray dust removal system in an embodiment of the present application;

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

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

[0039] Among them: 1. LoRa module; 2. Debug interface; 3. Download interface; 4. First resistor; 5. IEPX antenna base; 6. First capacitor; 7. Inductor; 8. Intrinsically safe power interface; 9. Battery power interface; 10. Second resistor; 11. First TVS tube; 12. Second capacitor; 13. Common mode filter; 14. Third capacitor; 15. NMOS tube; 16. Fourth capacitor; 17. Second TVS tube; 18. Third TVS tube; 19. First fuse; 20. Fifth capacitor; 21. First PM OS tube; 22. third resistor; 23. fourth resistor; 24. PNP transistor; 25. sixth capacitor; 26. second PMOS tube; 27. first voltage-stabilizing diode; 28. fifth resistor; 29. ​​sixth resistor; 30. seventh resistor; 31. eighth resistor; 32. LED light-emitting component; 33. first anti-reverse diode; 34. second anti-reverse diode; 35. second fuse; 36. third anti-reverse diode; 37. third PMOS tube; 38. second voltage-stabilizing diode; 39. third voltage-stabilizing diode. DETAILED DESCRIPTION

[0040] The present application provides a slave 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.

[0041] A specific embodiment of the present application is described in further detail below with reference to the accompanying drawings.

[0042] like Figure 1 As shown, a slave station electronic control device for a distributed spray dust removal system cooperates with a master station electronic control device (not shown in the figure), including a main control module for data processing, a data transmission component for data transmission and wireless communication with the master station electronic control device, and a ball valve control component for controlling the on / off state of the ball valve part in the external spray dust removal hardware.

[0043] In this embodiment, the main control module can preferably be a BLE control chip, with the priority being to realize long-distance communication based on LoRa technology.

[0044] The data transmission component includes a LoRa communication circuit, and the ball valve control component includes a ball valve power supply control and current detection circuit and a ball valve control interface circuit. The ball valve power supply control and current detection circuit is electrically connected to the ball valve part in the external spray dust removal hardware via the ball valve control interface circuit. Both the LoRa communication circuit and the ball valve power supply control and current detection circuit are electrically connected to the main control module to realize two-way signal interaction.

[0045] In this embodiment, the ball valve control component includes two sets of independent ball valve power supply control and current detection circuits and ball valve control interface circuits (not shown in the figure), which can independently control the ball valve parts in the two external spray dust removal hardware at the same time. Based on the ball valve power supply control and current detection circuit, when the device receives data information from the external sensor, the main control module can determine whether to open the corresponding ball valve part in the external spray dust removal hardware according to preset conditions.

[0046] like Figure 2 As shown, the LoRa communication circuit includes a LoRa module 1, the VCC port of the LoRa module 1 serves as the power input terminal of the LoRa communication circuit, the LoRa module 1 is electrically connected to the debug interface 2 and the download interface 3, respectively, the ANT port of the LoRa module 1 is electrically connected to the first end of the IEPX antenna base 5 via the first resistor 4, the IEPX antenna base 5 is electrically connected to the LoRa antenna, the input and output ends of the first resistor 4 are electrically connected to the first end of the first capacitor 6 and the first end of the inductor 7, respectively, and the second ends of the IEPX antenna base 5, the first capacitor 6 and the inductor 7 are all electrically connected to DGND.

[0047] The data transmission component further includes an RS485 circuit, which is electrically connected to the main control module and implements bidirectional signal interaction. In this embodiment, the RS485 circuit is provided with two power input ports.

[0048] The distributed spray dust removal system slave station electronic control device also includes an interactive component for realizing human-computer interaction, and the interactive component is electrically connected to the main control module. The interactive component can be any one or more of a key, a touchpad, an LED indicator, a buzzer, and a display screen. In this embodiment, the interactive component includes at least a key circuit, a display screen, and an LED indicator. The key circuit, the display screen, and the LED indicator are all electrically connected to the main control module, wherein the display screen and the main control module can realize two-way signal exchange.

[0049] The distributed spray dust removal system slave station electronic control device also includes a power supply component for supplying power to various components within the device and completing adaptive voltage regulation. The power supply component includes a 9V battery power supply and a 12V intrinsically safe power supply. Both the battery power supply and the intrinsically safe power supply are electrically connected to the input end of the power switching circuit. The output end of the power switching circuit is electrically connected to the voltage regulation component and the battery voltage detection circuit respectively. The power switching circuit is electrically connected to the main control module via the battery voltage detection circuit. In order to reduce power consumption, the detection time of the battery voltage detection circuit can be set by the main control module.

[0050] Taking into account the need to further improve the overall standby time of the device in order to cope with sudden changes in power supply conditions, under the action of the power switching circuit, when the battery power supply and the intrinsically safe power supply are both connected at the same time, the device automatically switches to being powered by the intrinsically safe power supply.

[0051] like Figure 3 As shown, the specific settings and connection relationship of the power switching circuit are further described below. The power switching circuit includes an intrinsically safe power interface 8 and a battery power interface 9.

[0052] The first end of the intrinsically safe power interface 8 is electrically connected to the first ends of the second resistor 10, the first TVS tube 11, the second capacitor 12, and the common-mode filter 13, respectively. The second end of the intrinsically safe power interface 8 is electrically connected to the first end of the third capacitor 14 and the drain of the NMOS tube 15, respectively. The third end of the intrinsically safe power interface 8 and the second end of the third capacitor 14 are both grounded. The gate of the NMOS tube 15 is electrically connected to the second end of the second resistor 10. The source of the NMOS tube 15 is electrically connected to the second ends of the first TVS tube 11, the second capacitor 12, and the common-mode filter 13, respectively. A fourth capacitor 16 and a second TVS tube 17 are provided in parallel between the third and fourth ends of the common-mode filter 13.

[0053] A third TVS tube 18 is provided in parallel between the first end and the second end of the battery power interface 9. The first end of the battery power interface 9 is electrically connected to the first ends of the third TVS tube 18, the second TVS tube 17, the fourth capacitor 16, and the third end of the common-mode filter 13, respectively.

[0054] The fourth end of the common-mode filter 13 is electrically connected to the second ends of the fourth capacitor 16 and the second TVS tube 17, respectively. The fourth end of the common-mode filter 13 is electrically connected to the first end of the fifth capacitor 20 and the source of the first PMOS tube 21 via the first fuse 19. The fifth capacitor 20 is arranged in parallel between the gate and the source of the first PMOS tube 21. The gate of the first PMOS tube 21 is electrically connected to the second end of the fifth capacitor 20 and the first end of the third resistor 22, respectively. The second end of the third resistor 22 is electrically connected to GND.

[0055] The drain of the first PMOS transistor 21 is electrically connected to the first end of the fourth resistor 23, the emitter of the PNP transistor 24, the first end of the sixth capacitor 25, and the source of the second PMOS transistor 26, respectively. The second end of the fourth resistor 23 is electrically connected to the cathode of the first voltage-stabilizing diode 27 and the first end of the fifth resistor 28, respectively. The anode of the first voltage-stabilizing diode 27 is electrically connected to GND. The second end of the fifth resistor 28 is electrically connected to the base of the PNP transistor 24. The collector of the PNP transistor 24 is electrically connected to the second end of the sixth capacitor 25, the gate of the second PMOS transistor 26, and the first end of the sixth resistor 29, respectively. The second end of the sixth resistor 29 is electrically connected to GND.

[0056] The drain of the second PMOS tube 26 is electrically connected to the first ends of the seventh resistor 30 and the eighth resistor 31, respectively. The second end of the seventh resistor 30 is electrically connected to GND via the LED light-emitting component 32, and the second end of the eighth resistor 31 is electrically connected to GND. The drain of the second PMOS tube 26 is electrically connected to the output port of the power switching circuit via the first anti-reverse diode 33 and the second anti-reverse diode 34 in sequence. Specifically, the anode of the first anti-reverse diode 33 is electrically connected to the drain of the second PMOS tube 26, and the cathode of the first anti-reverse diode 33 is electrically connected to the anode of the second anti-reverse diode 34.

[0057] The second end of the battery power interface 9 is electrically connected to the second end of the third TVS transistor 18. The second end of the battery power interface 9 is electrically connected to the output port of the power switching circuit via a second fuse 35 and a third anti-reverse diode 36. Specifically, the second end of the battery power interface 9 is electrically connected to the anode of the third anti-reverse diode 36 via the second fuse 35. The anode of the third anti-reverse diode 36 is electrically connected to the drain of a third PMOS transistor 37, and the cathode of the third anti-reverse diode 36 is electrically connected to the source of the third PMOS transistor 37. The third PMOS transistor 37 is arranged in parallel between the anode and cathode of the third anti-reverse diode 36. The gate of the third PMOS transistor 37 is electrically connected to the drain of the second PMOS transistor 26 and the first end of the eighth resistor 31, respectively.

[0058] A second Zener diode 38 and a third Zener diode 39 are also arranged in parallel in front of the output port of the power switching circuit. The cathodes of the second Zener diode 38 and the third Zener diode 39 are electrically connected, and the anodes of the second Zener diode 38 and the third Zener diode 39 are electrically connected to GND.

[0059] Combine Figure 3 Specifically, when the battery power supply is connected and the intrinsically safe power supply is not connected, the drain of the third PMOS transistor 37 is at a high level, the source is pulled down to ground by the eighth resistor 31 and is at a low level, and the gate is at a high level due to conduction of its own body diode. At this time, the source level of the third PMOS transistor 37 is lower than the gate level, so the third PMOS transistor 37 is turned on, and the voltage at TP1 is the battery power supply voltage of 9V. When both the battery power supply and the intrinsically safe power supply are connected at the same time, the drain, source, and gate of the third PMOS transistor 37 are all at a high level. At this time, the third PMOS transistor 37 is not turned on, and the voltage at TP1 is the intrinsically safe power supply voltage of 12V.

[0060] The main control module is also electrically connected to an input switch interface circuit, an external FLASH, a main control module debugging interface and a Bluetooth antenna.

[0061] The voltage regulation component includes a first voltage regulation circuit, a second voltage regulation circuit, and a third voltage regulation circuit. In this embodiment, the first voltage regulation circuit is a 12V pass-through circuit for an intrinsically safe power supply (if powered by a battery, it can be boosted via a battery BOOST), the second voltage regulation circuit is a battery / intrinsically safe power supply to 5V step-down circuit, and the third voltage regulation circuit is a battery / intrinsically safe power supply to 3.3V step-down circuit.

[0062] The power switching circuit is electrically connected to the ball valve power supply control and current detection circuit via the first voltage regulation circuit. The power switching circuit is electrically connected to the display screen and the RS485 circuit via the second voltage regulation circuit. The power switching circuit is electrically connected to the RS485 circuit, the LoRa communication circuit, the input switch interface circuit, and the key circuit via the third voltage regulation circuit.

[0063] The distributed spray dust removal system slave station electronic control device also includes a switch component for controlling the operating status of each part in the device, and the switch component includes a main power switch, a battery voltage detection power supply switch, a display power supply control switch, a first RS485 power supply control switch, a second RS485 power supply control switch, a LoRa communication power supply control switch, an input switch power supply control switch, and a FLASH power supply control switch.

[0064] Specifically, the main power switch is arranged between the power supply component and the power switching circuit, the battery voltage detection power supply switch is arranged between the power switching circuit and the battery voltage detection circuit, the display screen power supply control switch is arranged between the second voltage regulation circuit and the display screen, the first RS485 power supply control switch is arranged between the second voltage regulation circuit and the RS485 circuit, the second RS485 power supply control switch is arranged between the third voltage regulation circuit and the RS485 circuit, the LoRa communication power supply control switch is arranged between the third voltage regulation circuit and the LoRa communication circuit, the input switch power supply control switch is arranged between the third voltage regulation circuit and the input switch interface circuit, and the FLASH power supply control switch is arranged between the main control module and the external FLASH.

[0065] In addition, in the actual application of this solution, a switch board can be introduced to centrally manage the switch components to facilitate the actual use of the operator.

[0066] 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.

[0067] 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 slave station electronic control device for a distributed spray dust removal system, coordinated with a master station electronic control device, characterized by: It includes a main control module for data processing, a data transmission component for data transmission and wireless communication with the main station electronic control device, and a ball valve control component for controlling the on / off state of the ball valve part in the external spray dust removal hardware; The data transmission component includes a LoRa communication circuit, and the ball valve control component includes a ball valve power supply control and current detection circuit and a ball valve control interface circuit. The ball valve power supply control and current detection circuit is electrically connected to the ball valve part in the external spray dust removal hardware via the ball valve control interface circuit. Both the LoRa communication circuit and the ball valve power supply control and current detection circuit are electrically connected to the main control module to realize two-way signal interaction.

2. The slave station electronic control device for the distributed spray dust removal system according to claim 1 is characterized in that: The LoRa communication circuit comprises a LoRa module (1), a VCC port of the LoRa module (1) serving as a power input terminal of the LoRa communication circuit, the LoRa module (1) being electrically connected to a debugging interface (2) and a download interface (3), an ANT port of the LoRa module (1) being electrically connected to a first end of an IEPX antenna base (5) via a first resistor (4), an input and an output of the first resistor (4) being electrically connected to a first end of a first capacitor (6) and a first end of an inductor (7), respectively, and the second ends of the IEPX antenna base (5), the first capacitor (6) and the inductor (7) being electrically connected to DGND.

3. The slave station electronic control device for the distributed spray dust removal system according to claim 2, characterized in that: The data transmission component further includes an RS485 circuit, which is electrically connected to the main control module and realizes bidirectional signal interaction.

4. The slave 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, the interactive component is electrically connected to the main control module, and the interactive component at least includes a key circuit, a display screen and an LED indicator light.

5. The slave station electronic control device for the distributed spray dust removal system according to claim 4, characterized in that: It also includes a power supply component for powering various components in the device and completing adaptive voltage regulation. The power supply component includes a battery-powered power supply and an intrinsically safe power supply. Both the battery-powered power supply and the intrinsically safe power supply are electrically connected to the input end of the power switching circuit. The output end of the power switching circuit is electrically connected to the voltage regulation component and the battery voltage detection circuit respectively. The power switching circuit is electrically connected to the main control module via the battery voltage detection circuit.

6. The slave station electronic control device for the distributed spray dust removal system according to claim 5, characterized in that: The power switching circuit includes an intrinsically safe power interface (8) and a battery power interface (9); The first end of the intrinsically safe power interface (8) is electrically connected to the first ends of the second resistor (10), the first TVS tube (11), the second capacitor (12) and the common mode filter (13), respectively; the second end of the intrinsically safe power interface (8) is electrically connected to the first end of the third capacitor (14) and the drain of the NMOS tube (15), respectively; the third end of the intrinsically safe power interface (8) and the second end of the third capacitor (14) are both grounded; the gate of the NMOS tube (15) is electrically connected to the second end of the second resistor (10), and the source of the NMOS tube (15) is electrically connected to the second ends of the first TVS tube (11), the second capacitor (12) and the common mode filter (13); The first end of the battery power interface (9) is electrically connected to the first ends of the third TVS tube (18), the second TVS tube (17), the fourth capacitor (16), and the third end of the common mode filter (13); The fourth end of the common-mode filter (13) is electrically connected to the second ends of the fourth capacitor (16) and the second TVS tube (17), respectively. The fourth end of the common-mode filter (13) is electrically connected to the first end of the fifth capacitor (20) and the source of the first PMOS tube (21) via the first fuse (19). The gate of the first PMOS tube (21) is electrically connected to the second end of the fifth capacitor (20) and the first end of the third resistor (22), respectively. The second end of the third resistor (22) is electrically connected to GND. The drain of the first PMOS transistor (21) is electrically connected to the first end of the fourth resistor (23), the emitter of the PNP transistor (24), the first end of the sixth capacitor (25) and the source of the second PMOS transistor (26), respectively; the second end of the fourth resistor (23) is electrically connected to the cathode of the first voltage-stabilizing diode (27) and the first end of the fifth resistor (28), respectively; the anode of the first voltage-stabilizing diode (27) is electrically connected to GND; the second end of the fifth resistor (28) is electrically connected to the base of the PNP transistor (24); the collector of the PNP transistor (24) is electrically connected to the second end of the sixth capacitor (25), the gate of the second PMOS transistor (26) and the first end of the sixth resistor (29), respectively; the second end of the sixth resistor (29) is electrically connected to GND; The drain of the second PMOS tube (26) is electrically connected to the first ends of the seventh resistor (30) and the eighth resistor (31), respectively; the second end of the seventh resistor (30) is electrically connected to GND via the LED light-emitting component (32); the second end of the eighth resistor (31) is electrically connected to GND; the drain of the second PMOS tube (26) is electrically connected to the output port of the power switching circuit via the first anti-reverse diode (33) and the second anti-reverse diode (34) in sequence; The second end of the battery power interface (9) is electrically connected to the second end of the third TVS tube (18), and the second end of the battery power interface (9) is electrically connected to the output port of the power switching circuit through the second fuse (35) and the third anti-reverse diode (36) in sequence. The anode of the third anti-reverse diode (36) is electrically connected to the drain of the third PMOS tube (37), the cathode of the third anti-reverse diode (36) is electrically connected to the source of the third PMOS tube (37), and the gate of the third PMOS tube (37) is electrically connected to the drain of the second PMOS tube (26) and the first end of the eighth resistor (31). A second voltage-stabilizing diode (38) and a third voltage-stabilizing diode (39) are also provided in front of the output port of the power switching circuit. The cathodes of the second voltage-stabilizing diode (38) and the cathodes of the third voltage-stabilizing diode (39) are electrically connected, and the anodes of the second voltage-stabilizing diode (38) and the anodes of the third voltage-stabilizing diode (39) are electrically connected to GND.

7. The slave station electronic control device for the distributed spray dust removal system according to claim 5, characterized in that: The main control module is also electrically connected to an input switch interface circuit, an external FLASH, a main control module debugging interface and a Bluetooth antenna.

8. The slave station electronic control device for the distributed spray dust removal system according to claim 7, characterized in that: The voltage regulation component includes a first voltage regulation circuit, a second voltage regulation circuit and a third voltage regulation circuit; the power switching circuit is electrically connected to the ball valve power supply control and current detection circuit through the first voltage regulation circuit, and the power switching circuit is electrically connected to the display screen and the RS485 circuit respectively through the second voltage regulation circuit, and the power switching circuit is electrically connected to the RS485 circuit, the LoRa communication circuit, the input switch interface circuit and the key circuit respectively through the third voltage regulation circuit.

9. The slave station electronic control device for the distributed spray dust removal system according to claim 8, characterized in that: It also includes a switch component for controlling the operating status of each part in the device, and the switch component includes a main power switch, a battery voltage detection power supply switch, a display power supply control switch, a first RS485 power supply control switch, a second RS485 power supply control switch, a LoRa communication power supply control switch, an input switch power supply control switch and a FLASH power supply control switch.

10. The slave station electronic control device for the distributed spray dust removal system according to claim 9, characterized in that: The main power switch is arranged between the power supply component and the power switching circuit, the battery voltage detection power supply switch is arranged between the power switching circuit and the battery voltage detection circuit, the display screen power supply control switch is arranged between the second voltage regulation circuit and the display screen, the first RS485 power supply control switch is arranged between the second voltage regulation circuit and the RS485 circuit, the second RS485 power supply control switch is arranged between the third voltage regulation circuit and the RS485 circuit, the LoRa communication power supply control switch is arranged between the third voltage regulation circuit and the LoRa communication circuit, the input switch power supply control switch is arranged between the third voltage regulation circuit and the input switch interface circuit, and the FLASH power supply control switch is arranged between the main control module and the external FLASH.

Images