Digital electromagnetic valve driving system, hydraulic support controller and control system

Abstract

The invention relates to the technical field of fully mechanized coal mining, and discloses a digital electromagnetic valve driving system, a hydraulic support controller and a control system. The digital electromagnetic valve driving system comprises a controller used for generating a control instruction; the driving circuit is arranged in the controller and is used for encoding the control instruction into a digital control code and outputting the digital control code; one end of the switching mechanism is connected with the output end of the driving circuit, and the switching mechanism is used for receiving and forwarding the control code; the electromagnetic valve is connected with the other end of the switching mechanism and is used for receiving the control code; a conversion circuit is arranged in the electromagnetic valve and used for decoding the control code into a corresponding voltage signal and driving a corresponding hydraulic pipeline based on the voltage signal so as to control a support connected with the hydraulic pipeline to execute corresponding actions. The driver is integrated into the controller to directly drive the electromagnetic valve, so that the installation difficulty is simplified, and the reliability of the system is improved.

Description

Technical Field

[0001] This application relates to the field of coal mining technology, such as a digital solenoid valve drive system, a hydraulic support controller, and a control system. Background Technology

[0002] Numerous sensors and other monitoring devices are installed on the hydraulic supports of the longwall mining face to achieve automated and intelligent operation of the supports, coal mining machines, and scraper conveyors, reducing the labor intensity of personnel and improving mining efficiency. Among them, the electro-hydraulic control system can realize the status detection and automated control of the supports, such as detecting the pressure of the columns and performing actions such as raising and lowering the columns, pushing the conveyor, moving the support, and extending and retracting the side protection.

[0003] Currently, the main components for controlling the movement of the support structure include: controllers, actuators, and multi-way valves. Since multi-way valves involve multiple connectors (e.g., a multi-way valve with six sub-valves corresponding to six terminals), and in actual use, the number of sub-valves varies from 2 to 14, the numerous connection points between devices necessitate on-site installation. Therefore, electro-hydraulic control actuators suffer from high cost, low reliability, and complex installation.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0005] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0006] This application provides a digital solenoid valve drive system, a hydraulic support controller, and a control system. These features aim to reduce system complexity, improve reliability, and decrease deployment and maintenance costs.

[0007] In some embodiments, the digital solenoid valve drive system includes: a controller for generating control commands; a drive circuit disposed within the controller for encoding the control commands into digital control codes and outputting them; a transfer mechanism, one end of which is connected to the output terminal of the drive circuit for receiving and forwarding the control codes; and a solenoid valve connected to the other end of the transfer mechanism for receiving the control codes forwarded by the transfer mechanism. The solenoid valve is internally equipped with a conversion circuit for decoding the control codes into corresponding voltage signals and driving corresponding hydraulic lines based on the voltage signals to control the brackets connected to the hydraulic lines to perform corresponding actions.

[0008] Optionally, the driving circuit includes a receiving module and an output module. The receiving module is used to receive control commands output by the processor inside the controller, and the output module is used to detect the control commands and output a digital control code that is the inverse of the control commands.

[0009] Optionally, the driving circuit includes: an input signal terminal (K1), connected to the processor pin inside the controller, for receiving a digitally modulated square wave signal; a field-effect transistor (Q7), whose gate is connected to the input signal terminal (K1) and whose source is grounded; an output signal terminal (KZ1), serving as the output terminal of the driving circuit, for outputting the control code, wherein the output signal terminal (KZ1) is connected to the power supply (P7_PowerOut) through a pull-up resistor; and a status detection signal terminal (K2), for outputting the status feedback signal of the output signal terminal (KZ1).

[0010] Optionally, the conversion circuit inside the solenoid valve includes: a receiving terminal (LED_DRV) for receiving the control signal output from the output signal terminal (KZ1); a transistor (Q2) whose base is connected to the receiving terminal (LED_DRV) through a resistor (R22) and whose emitter is grounded; and a driver chip whose input terminal (DI) is connected to the power supply (VDD) through a pull-up resistor (R31) and connected to the collector of the transistor (Q2).

[0011] Optionally, the solenoid valve includes multiple sub-valves, each of which is connected to the others via an adapter cable. The first sub-valve is connected to the output of the conversion circuit, and the other sub-valves are connected in series via a driver chip.

[0012] Optionally, each of the sub-valve is connected via a three-channel driver chip WS2811F.

[0013] Optionally, the driver chip employs a single-wire return-to-zero code communication method to achieve serial signal transmission between multiple sub-valves. After the driver chip is powered on and reset, its input receives serial data from the controller. The driver chip extracts and latches the first N bits of the serial data, and the remaining data is internally shaped and amplified before being forwarded to the next-level driver chip via its output. Here, N is a positive integer. Each time the data passes through a driver chip, the serial data decreases by N bits, enabling multiple sub-valves to sequentially receive and respond to corresponding control data.

[0014] Optionally, the sub-valves are connected using an M12 interface.

[0015] In some embodiments, the hydraulic support controller includes a housing and a circuit board mounted within the housing, the circuit board integrating a digital solenoid valve drive system as described in any of the preceding claims.

[0016] In some embodiments, the control system is applied to the end face of a fully mechanized coal mining face. The control system includes: multiple hydraulic supports arranged along the working face; a hydraulic support controller, which is communicatively connected to the solenoid valve drive system of each hydraulic support; wherein the hydraulic support controller is configured to: send control codes to a designated hydraulic support to drive the solenoid valve of the hydraulic support, thereby controlling the hydraulic pipeline operation to achieve control of at least one function of the hydraulic support, such as raising the column, lowering the column, moving the support, or extending or retracting the side guard plate.

[0017] The digital solenoid valve drive system, hydraulic support controller, and control system provided in this application embodiment can eliminate the need for a separate solenoid valve driver in existing systems by integrating the driver into the controller. The controller can then directly connect to and drive the solenoid valve. This effectively reduces the interfaces required by the driver, simplifies installation and troubleshooting, and improves system reliability.

[0018] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0019] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein: Figure 1 This is a schematic diagram of the working face of a fully mechanized mining face; Figure 2 This is a connection diagram of a solenoid valve drive system in the prior art; Figure 3 A schematic diagram of a digital solenoid valve drive system provided in an embodiment of this application; Figure 4 A schematic diagram of the structure of a digital electromagnetic drive system in a practical application scenario provided in this application embodiment; Figure 5 This is a schematic diagram of a driving circuit provided in an embodiment of this application; Figure 6 This application provides a schematic diagram of the internal circuit of a solenoid valve. Figure 7 This is a schematic diagram of the WS2811 signal transmission process; Figure 8 This is a schematic diagram of the M12 interface. Detailed Implementation

[0020] To provide a more detailed understanding of the features and technical content of the embodiments of this application, the implementation of the embodiments of this application will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this application. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0021] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0022] Unless otherwise stated, the term "multiple" means two or more.

[0023] In this embodiment, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0024] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0025] like Figure 1 The diagram shown is a schematic representation of a fully mechanized mining face. Numerous sensors and other monitoring devices are installed on the hydraulic supports of the fully mechanized mining face to achieve automated and intelligent operation of the supports, coal mining machine, and scraper conveyor, reducing labor intensity and improving mining efficiency. Among these, the electro-hydraulic control system can realize the status detection and automated control of the supports, such as detecting the column pressure and performing actions like raising and lowering the columns, pushing the conveyor, moving the support, and extending and retracting the sidewalls.

[0026] The electro-hydraulic control system of a hydraulic support consists of a support controller, driver, warning lights, pressure sensors, stroke sensors, infrared receivers, remote controllers, solenoid valves (also known as multi-way valves), tilt sensors, signal converters, power adapters, isolation couplers, and a power supply box. It detects the support's status and controls actions such as raising, lowering, and pushing the support. Multiple supports are typically present on the working face (usually over 100), and each support requires the installation of the aforementioned equipment, which is connected via connectors.

[0027] The main components for controlling the movement of the support structure include: a controller, a driver, and a multi-way valve. For example... Figure 2The diagram shows the connection of the solenoid valve drive system. The controller is responsible for human-machine interaction, communication, sensor data acquisition, and issuing control commands. The actuator receives commands from the controller and converts them into voltage signals to drive the multi-way valve. The multi-way valve receives electrical drive signals from the actuator, converts them into corresponding hydraulic line control signals (to open and close the hydraulic lines), and uses hydraulic power to drive the support to perform corresponding actions.

[0028] Based on the above issues, such as Figure 3 The diagram illustrates a digital solenoid valve drive system provided in this application embodiment. It comprises: a controller 301 for generating control commands; a drive circuit 302, disposed within the controller 301, for encoding the control commands into digital control codes and outputting them; a transfer mechanism 303, one end of which is connected to the output of the drive circuit 302, for receiving and forwarding the control codes; a solenoid valve 304, connected to the other end of the transfer mechanism 303, for receiving the control codes forwarded by the transfer mechanism; and a conversion circuit 305 internally disposed within the solenoid valve for decoding the control codes into corresponding voltage signals and driving corresponding hydraulic lines based on the voltage signals to control the supports connected to the hydraulic lines to perform corresponding actions.

[0029] The solenoid valve drive system provided in this application integrates the driver into the controller, eliminating the need for a separate solenoid valve driver in existing systems. The controller directly connects to and drives the solenoid valve, effectively reducing the number of interfaces required by the driver, simplifying installation and troubleshooting, and improving system reliability.

[0030] like Figure 4 The diagram illustrates a practical application of a digital solenoid valve drive system provided in this embodiment. As shown, the blue M12 adapter cable and the red 4K adapter cable are connected before the multi-way valve leaves the factory and do not require further connection at the installation site. The controller and the multi-way valve are connected via only one interface, the 4K connector, which is established during field deployment. The controller's internal drive circuit converts control commands into digital control codes, which are then directly sent digitally to the multi-way solenoid valve.

[0031] The multi-way valve integrates a conversion circuit that converts control codes into hydraulic voltage signals. That is, it converts digital control codes into voltage signals to drive the corresponding hydraulic lines to open or close, and uses hydraulic power to drive the support to perform corresponding actions.

[0032] The controller outputs digital pulse signals through its internal drive circuit. The drive circuit can enhance the signal's driving capability and isolate external devices from the controller's core circuit (such as the processor), thereby improving the circuit's anti-interference capability.

[0033] In some examples, the drive circuit includes a receiving module and an output module. The receiving module is used to receive control commands output by the processor inside the controller, and the output module is used to detect the control commands and output a digital control code that is the inverse of the control commands.

[0034] Furthermore, the driving circuit includes: an input signal terminal (K1), connected to the processor pin inside the controller, for receiving a digitally modulated square wave signal; a field-effect transistor (Q7), whose gate is connected to the input signal terminal (K1) and whose source is grounded; an output signal terminal (KZ1), serving as the output terminal of the driving circuit, for outputting the control code, wherein the output signal terminal (KZ1) is connected to the power supply (P7_PowerOut) through a pull-up resistor; and a status detection signal terminal (K2), for outputting the status feedback signal of the output signal terminal (KZ1).

[0035] like Figure 5 The figure shows a schematic diagram of a driving circuit provided in an embodiment of this application. As shown, K1 is the input signal, KZ1 is the output signal, and K2 is the state detection signal of KZ1. The processor pin of the controller is connected to K1. The K1 signal is a digitally modulated square wave signal. When K1 is high, the field-effect transistor Q7 is turned on, and KZ1 and K2 are low; conversely, when K1 is low, KZ1 is pulled high by P7_PowerOut, and K2 is high. That is, the processor's output signal and the KZ1 signal are out of phase. The KZ1 signal is output to the multiplexer.

[0036] In specific operation, when the input signal terminal (K1) is high, the field-effect transistor (Q7) is turned on, and the output signal terminal (KZ1) and the state detection signal terminal (K2) are low; when the input signal terminal (K1) is low, the field-effect transistor (Q7) is turned off, the output signal terminal (KZ1) is pulled up to a high level, and the state detection signal terminal (K2) is high, so that the signals of the input signal terminal (K1) and the output signal terminal (KZ1) are out of phase.

[0037] In some examples, the conversion circuit inside the solenoid valve includes: a receiver (LED_DRV) for receiving the control signal output from the output signal terminal (KZ1); a transistor (Q2) whose base is connected to the receiver (LED_DRV) through a resistor (R22) and whose emitter is grounded; and a driver chip whose input terminal (DI) is connected to the power supply (VDD) through a pull-up resistor (R31) and is connected to the collector of the transistor (Q2).

[0038] Specifically, when the receiving end (LED_DRV) is high, the transistor (Q2) is turned on, and the input end (DI) of the chip (WS2811) is low; when the receiving end (LED_DRV) is low, the transistor (Q2) is turned off, and the input end (DI) of the chip (WS2811) is pulled up to a high level, thereby making the input signal end (K1) in phase with the input end (DI) of the chip (WS2811).

[0039] The multi-way valve has a built-in serial cascading circuit. Each WS2811 chip connects to one solenoid valve (capable of two functions, such as raising and lowering the valve), enabling control from the controller to multiple solenoid valves. Figure 6 The solenoid valve has a built-in serial cascade circuit, as shown. The controller's output signal KZ1 is connected to the solenoid valve's LED_DRV signal. When LED_DRV is high, transistor Q2 is turned on, and the WS2811's input signal DI is low. Conversely, DI is pulled high through R31. That is, LED_DRV and DI are out of phase, and the controller's output signal KZ1 and the WS2811's input signal DI are in phase.

[0040] In some examples, the solenoid valve includes multiple sub-valves, each of which is connected to the others via adapter cables. The first of the multiple sub-valves is connected to the output of the conversion circuit, and the other sub-valves are connected in series via a driver chip.

[0041] Specifically, the sub-valve of the multi-way valve is connected by adapter cables, and the signals between the sub-valves are transmitted in series. That is, after the signal of valve 1 is analyzed, it is sent to valve 2, after the signal of valve 2 is analyzed, it is sent to valve 3, and so on, until the last sub-valve.

[0042] In some examples, each of the sub-valve is connected via a three-channel driver chip WS2811F.

[0043] like Figure 6 The figure shows a schematic diagram of the internal circuit of a solenoid valve provided in an embodiment of this application. As shown, the solenoid valve first converts the control code sent by the controller into a voltage signal through a conversion circuit. The voltage signal is then sent to each sub-valve through a series cascaded circuit structure.

[0044] Each sub-valve is connected via a WS2811F, a three-channel LED driver control circuit. The chip internally includes an intelligent digital interface data latching signal shaping amplification driver circuit and a serial interface cascade interface, enabling data reception and decoding via a single signal line. Connecting the solenoid valve coil to pins 1, 2, and 3 of the WS2811F enables coil driving, achieving the conversion from electrical to hydraulic signals.

[0045] In some examples, the driver chip employs a single-wire return-to-zero (RZ) code communication method to achieve serial signal transmission between multiple sub-valves. After the driver chip is powered on and reset, its input receives serial data from the controller. The driver chip extracts and latches the first N bits of the serial data, and the remaining data is internally shaped and amplified before being forwarded to the next-level driver chip via its output. Here, N is a positive integer. Each time the data passes through a driver chip, the serial data decreases by N bits, enabling multiple sub-valves to sequentially receive and respond to corresponding control data.

[0046] Taking the WS2811F driver chip as an example, such as Figure 7 The diagram shows the signal transmission process of the WS2811F chip. This chip uses a single-wire return-to-zero (RZ) communication method. After power-on reset, the DIN pin receives data from the controller. The first 24 bits of data are extracted by the first chip and sent to its internal data latch. The remaining data is shaped and amplified by the internal shaping circuit and then forwarded to the next cascaded chip via the DO port. The signal decreases by 24 bits with each subsequent chip. This method enables serial signal transmission between sub-valve units.

[0047] In some examples, the sub-valvees are connected using an M12 interface. For example... Figure 8 The diagram shows the structure of the M12 interface. In multi-way valves, adapter cables are needed for series connection between the valve bodies. The interface is an M12 interface, defined as follows: Figure 8 The M12 interface definition is shown below. VCC and GND are the power supply and ground, respectively. DI is the data input, receiving digital pulse signals from the controller or the previous valve body. DO is the data output, sending the data parsed by the WS2811 to the next sub-valve. The 4K interface definition for the controller and multi-way valve is the same as the M12 interface definition.

[0048] The M12 adapter cables between the sub-valve are pre-connected and protected at the factory, and come with 4K adapter cables. During on-site installation downhole, only the 4K adapter cables and 4K connectors need to be connected; a single interface is sufficient to complete the signal connection between the controller and the multi-way valve.

[0049] This application also provides a hydraulic support controller, which includes a housing and a circuit board installed in the housing. The circuit board integrates a digital solenoid valve drive system as described in any of the above embodiments.

[0050] This application also provides a control system applied to the end face of a fully mechanized coal mining face. The control system includes: multiple hydraulic supports arranged along the working face; a hydraulic support controller as described in the above embodiments, wherein the hydraulic support controller is communicatively connected to the solenoid valve drive system of each hydraulic support; wherein the hydraulic support controller is configured to: send control codes to designated hydraulic supports to drive the solenoid valves of the hydraulic supports, thereby controlling the hydraulic pipeline operation, and realizing the control of at least one function of the hydraulic support, such as raising the column, lowering the column, moving the support, or extending or retracting the side guard plate.

[0051] The foregoing description and accompanying drawings fully illustrate embodiments of this application to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, procedural, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. Moreover, the terminology used in this application is for describing embodiments only and is not intended to limit the claims. As used in the description of embodiments and claims, the singular forms “a,” “an,” and “the” are intended to equally include the plural forms unless the context clearly indicates otherwise. Similarly, the term “and / or” as used in this application means including one or more of the associated listed items and all possible combinations thereof. Additionally, when used in this application, the term "comprise" and its variations "comprises" and / or "comprising" refer to the presence of stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof. Without further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the process, method, or apparatus that includes said element. In this document, each embodiment may focus on the differences from other embodiments, and similar or identical parts between embodiments can be referred to mutually. For methods, products, etc., disclosed in the embodiments, if they correspond to the method section disclosed in the embodiments, the relevant parts can be referred to the description of the method section.

[0052] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the embodiments of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0053] The methods and products (including but not limited to devices and equipment) disclosed in the embodiments herein can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For instance, the division of units may be merely a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to implement this embodiment according to actual needs. In addition, the functional units in the embodiments of this application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0054] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the blocks may occur in a different order than that shown in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, the operations or steps corresponding to different blocks may also occur in a different order than disclosed in the description; sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. Each block in a block diagram and / or flowchart, and combinations of blocks in a block diagram and / or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

Claims

1. A digital solenoid valve drive system, characterized in that, include: The controller is used to generate control commands; A drive circuit, located inside the controller, is used to encode the control commands into digital control codes and output them. The switching mechanism is connected at one end to the output terminal of the drive circuit and is used to receive and forward the control code; A solenoid valve, connected to the other end of the adapter mechanism, is used to receive the control code forwarded by the adapter mechanism; the solenoid valve is equipped with a conversion circuit to decode the control code into a corresponding voltage signal, and drive the corresponding hydraulic pipeline based on the voltage signal to control the bracket connected to the hydraulic pipeline to perform corresponding actions.

2. The digital electromagnetic drive system according to claim 1, characterized in that, The driving circuit includes a receiving module and an output module. The receiving module is used to receive control commands output by the processor inside the controller. The output module is used to detect the control commands and output a digital control code that is the opposite of the control commands.

3. The digital solenoid valve drive system according to claim 1, characterized in that, The driving circuit includes: The input signal terminal (K1) is connected to the processor pin inside the controller and is used to receive digitally modulated square wave signals; The field-effect transistor (Q7) has its gate connected to the input signal terminal (K1) and its source grounded; The output signal terminal (KZ1) serves as the output terminal of the driving circuit and is used to output the control code. The output signal terminal (KZ1) is connected to the power supply (P7_PowerOut) through a pull-up resistor. The status detection signal terminal (K2) is used to output the status feedback signal of the output signal terminal (KZ1).

4. The digital electromagnetic drive system according to claim 1, characterized in that, The switching circuit inside the solenoid valve includes: The receiving end (LED_DRV) is used to receive the control signal output by the output signal end (KZ1); The base of the transistor (Q2) is connected to the receiver (LED_DRV) through a resistor (R22), and the emitter is grounded; The chip (WS2811) has its input terminal (DI) connected to the power supply (VDD) via a pull-up resistor (R31) and connected to the collector of the transistor (Q2).

5. The digital electromagnetic drive system according to claim 4, characterized in that, The solenoid valve includes multiple sub-valves, which are connected to each other via adapter cables. The first sub-valve is connected to the output terminal of the conversion circuit, and the other sub-valves are connected in series via a driver chip.

6. The digital electromagnetic drive system according to claim 5, characterized in that, Each of the sub-valve is connected via a three-channel driver chip WS2811F.

7. The digital electromagnetic drive system according to claim 5, characterized in that, The driver chip uses a single-wire return-to-zero code communication method to realize the serial transmission of signals between multiple sub-valves; After the driver chip is powered on and reset, its input terminal receives serial data from the controller. The driver chip extracts the first N bits of the serial data and latches them. The remaining data is internally shaped and amplified and then forwarded to the next-level driver chip through the output terminal. Here, N is a positive integer. Each time the data passes through one of the aforementioned driver chips, the serial data is reduced by N bits, enabling multiple sub-valves to sequentially receive and respond to the corresponding control data.

8. The digital electromagnetic drive system according to claim 1, characterized in that, The sub-valvees are connected via an M12 interface.

9. A hydraulic support controller, characterized in that, It includes a housing and a circuit board mounted within the housing, the circuit board integrating a digital solenoid valve drive system as described in any one of claims 1-8.

10. A control system applied to the end face of a fully mechanized coal mining face, characterized in that, include: Multiple hydraulic supports are arranged along the working surface; The hydraulic support controller as described in claim 9, wherein the hydraulic support controller is communicatively connected to the solenoid valve drive system of each of the hydraulic supports; The hydraulic support controller is configured to send a control code to the specified hydraulic support to drive the solenoid valve of the hydraulic support, thereby controlling the hydraulic pipeline operation and realizing control of at least one function of the hydraulic support, such as raising the column, lowering the column, moving the support, or extending or retracting the side guard plate.

Images