Pipeline pressure control device and control method

Abstract

The invention provides a pipeline pressure control device and method. The device comprises a main control circuit board; the motor driver is electrically connected with the main control circuit board; the touch screen is electrically connected with the main control circuit board; the power supply is electrically connected with the main control circuit board, and the power supply is electrically connected with the motor driver and the touch screen; the main control circuit board, the motor driver, the touch screen and the power supply are all mounted in the shell; wherein the main control circuit board calculates the opening degree of the electric adjusting valve according to the received target pipeline pressure parameter and sends the opening degree to the motor driver, and the motor driver controls the operation of the motor according to the opening degree of the electric adjusting valve; the touch screen is used for receiving a target pipeline pressure parameter and / or a target electric adjusting valve opening degree and displaying a real-time pipeline pressure parameter and / or a real-time electric adjusting valve opening degree; the power supply supplies power to the main control circuit board, the motor driver and the touch screen. The method is beneficial for improving the precision of pipeline pressure control.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline pressure controllers, and also to a pipeline pressure control device and a control method. Background Art

[0002] Pipeline pressure is an important parameter in the experimental system, and its pressure is generally adjusted by a dedicated pressure controller. In the study of the experimental system, the operating conditions are adjusted by controlling the pipeline pressure. The experimental system will show different performance and characteristics under different working conditions. Therefore, only by making stable and precise control of the pipeline pressure can the scientificity and accuracy of the experimental results be guaranteed. In a multi-stage experimental system, it is necessary not only to control the pressure of the total pipeline, but also to control the pressure of each stage of the pipeline within a certain range to obtain higher overall system performance. Once the pressure of a pipeline in a multi-stage system is unstable, it will affect the entire experimental system. It can be seen that the control effect of the pressure controller has an important impact on various experimental systems. However, the existing pipeline pressure controller has poor control accuracy and cannot meet the high-precision control requirements. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a pipeline pressure control device and a control method to improve the control accuracy of the pipeline pressure controller.

[0004] In order to solve the above technical problems, the technical solution of the present invention is as follows:

[0005] A first aspect of the present invention provides a pipeline pressure control device, comprising:

[0006] Main control circuit board;

[0007] A motor driver electrically connected to the main control circuit board;

[0008] A touch screen electrically connected to the main control circuit board;

[0009] A power supply electrically connected to the main control circuit board, wherein the power supply is electrically connected to the motor driver and the touch screen;

[0010] A housing, wherein the main control circuit board, the motor driver, the touch screen and the power supply are all installed in the housing;

[0011] Among them, the main control circuit board calculates the electric control valve opening according to the received target pipeline pressure parameters and sends it to the motor driver, and the motor driver controls the operation of the motor according to the electric control valve opening; the touch screen is used to receive the target pipeline pressure parameters and / or the target electric control valve opening, and display the real-time pipeline pressure parameters and / or the real-time electric control valve opening; the power supply supplies power to the main control circuit board, the motor driver, and the touch screen.

[0012] Optionally, the main control circuit board includes:

[0013] Main control module;

[0014] A motor drive module, a pressure acquisition module, an interaction module, a communication module, a storage module and a voltage conversion module electrically connected to the main control module;

[0015] Wherein, the main control module, the motor drive module, the pressure acquisition module, the interaction module, the communication module, the storage module and the voltage conversion module are all electrically connected to the power supply; the motor drive module is electrically connected to the motor driver; the interaction module is electrically connected to the touch screen;

[0016] Among them, the pressure acquisition module sends the collected real-time pipeline pressure parameters to the main control module, and the main control module calculates the electric control valve opening according to the real-time pipeline pressure parameters and the target pipeline pressure parameters received through the communication module, and sends it to the storage module for storage, to the motor drive module, and to the interaction module; the motor drive module sends the electric control valve opening to the motor driver, and the motor driver controls the operation of the motor according to the electric control valve opening; the interaction module sends the electric control valve opening to the touch screen for display.

[0017] Optionally, a communication interface is provided on the main control circuit board, and the communication interface is connected to the user end via a network cable.

[0018] Optionally, a pressure collection interface is provided on the main control circuit board, and the pressure collection interface is connected to a pressure measuring point on the pipeline.

[0019] Optionally, the motor driver is provided with a motor interface, and the motor interface is connected to the motor.

[0020] Optionally, the communication module is an Ethernet communication module.

[0021] Optionally, the housing includes a main board, on which a first side panel, a second side panel and a third side panel are mounted, and the first side panel and the third side panel are arranged opposite to each other and are both connected to the second side panel.

[0022] Optionally, a mounting hole for mounting the touch screen is provided on the mainboard.

[0023] Optionally, both the first side panel and the third side panel are provided with ventilation holes.

[0024] A second aspect of the present invention provides a pipeline pressure control method, which is applied to the pipeline pressure control device as described in any one of the above, and the method comprises:

[0025] The main control circuit board calculates the opening of the electric regulating valve according to the received target pipeline pressure parameter, and sends it to the motor driver;

[0026] The motor driver controls the operation of the motor according to the opening of the electric regulating valve;

[0027] The touch screen is used to receive target pipeline pressure parameters and / or target electric regulating valve opening, and to display real-time pipeline pressure parameters and / or real-time electric regulating valve opening;

[0028] The power supply is used to supply power to the main control circuit board, the motor driver and the touch screen.

[0029] The above solution of the present invention includes at least the following beneficial effects:

[0030] The above scheme of the present invention calculates the opening of the electric control valve according to the received target pipeline pressure parameters through the main control circuit board, and sends it to the motor driver. The motor driver controls the operation of the motor according to the opening of the electric control valve, can adapt to the changes in different pipeline pressures, and realize high-precision and stable control of the pipeline pressure of the experimental system. It has the advantages of simple structure and good control effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic structural diagram of a pipeline pressure control device in an embodiment of the present invention;

[0032] Figure 2 Schematic diagram of the circuit principle of the main control circuit board in the embodiment of the present invention;

[0033] Figure 3 1 is a schematic diagram of the circuit principle of the pressure acquisition module 13 in an embodiment of the present invention;

[0034] Figure 4 Schematic diagram of the circuit principle of the motor drive module 12 in the embodiment of the present invention;

[0035] Figure 5 is a schematic diagram of the circuit principle of the communication module 15 in the embodiment of the present invention;

[0036] Figure 6 is a schematic diagram of the circuit principle of the storage module 16 in the embodiment of the present invention;

[0037] Figure 7 is a schematic diagram of the circuit principle of the interaction module 14 in an embodiment of the present invention;

[0038] Figure 8 is a schematic structural diagram of a housing 5 in an embodiment of the present invention;

[0039] Fig. 9 is a flow chart of a pipeline pressure control method in an embodiment of the present invention;

[0040] Fig.10 is a flow chart of a specific embodiment of the pipeline pressure control method in an embodiment of the present invention;

[0041] Fig.11 It is a flow chart of the parameter self-tuning method in an embodiment of the present invention.

[0042] Explanation of the accompanying drawings: 1-main control circuit board, 11-main control module, 12-motor drive module, 13-pressure acquisition module, 14-interaction module, 15-communication module, 16-storage module, 17-voltage conversion module, 2-motor driver, 3-touch screen, 4-power supply, 5-housing, 51-mainboard, 511-mounting hole, 52-first side panel, 53-second side panel, 54-third side panel, 55-ventilation port, 6-communication interface, 7-pressure acquisition interface, 8-motor interface, 9-power input interface. DETAILED DESCRIPTION

[0043] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present invention and to enable the scope of the present invention to be fully communicated to those skilled in the art.

[0044] like Figure 1 As shown, an embodiment of the present invention provides a pipeline pressure control device, comprising:

[0045] Main control circuit board 1;

[0046] A motor driver 2 electrically connected to the main control circuit board 1;

[0047] A touch screen 3 electrically connected to the main control circuit board 1;

[0048] A power supply 4 electrically connected to the main control circuit board 1, wherein the power supply 4 is electrically connected to the motor driver 2 and the touch screen 3;

[0049] A housing 5, wherein the main control circuit board 1, the motor driver 2, the touch screen 3 and the power supply 4 are all installed in the housing 5;

[0050] Among them, the main control circuit board 1 calculates the electric control valve opening according to the received target pipeline pressure parameters, and sends it to the motor driver 2, and the motor driver 2 controls the operation of the motor according to the electric control valve opening; the touch screen 3 is used to receive the target pipeline pressure parameters and / or the target electric control valve opening, and display the real-time pipeline pressure parameters and / or the real-time electric control valve opening; the power supply 4 supplies power to the main control circuit board 1, the motor driver 2, and the touch screen 3.

[0051] The pipeline pressure control device proposed in the embodiment of the present invention calculates the electric control valve opening according to the received target pipeline pressure parameters through the main control circuit board, and sends it to the motor driver. The motor driver controls the operation of the motor according to the electric control valve opening. It can adapt to the changes in different pipeline pressures and achieve high-precision and stable control of the pipeline pressure of the experimental system. It has the advantages of simple structure and good control effect.

[0052] like Figure 2 As shown, in an optional embodiment of the present invention, the main control circuit board 1 includes:

[0053] Main control module 11;

[0054] A motor drive module 12, a pressure acquisition module 13, an interaction module 14, a communication module 15, a storage module 16 and a voltage conversion module 17 electrically connected to the main control module 11;

[0055] The main control module 11, the motor drive module 12, the pressure acquisition module 13, the interaction module 14, the communication module 15, the storage module 16 and the voltage conversion module 17 are all electrically connected to the power supply 4; the motor drive module 12 is electrically connected to the motor driver 2; the interaction module 14 is electrically connected to the touch screen 3;

[0056] Among them, the pressure acquisition module 13 sends the collected real-time pipeline pressure parameters to the main control module 11, and the main control module 11 calculates the electric control valve opening according to the real-time pipeline pressure parameters and the target pipeline pressure parameters received through the communication module 15, and sends it to the storage module 16 for storage, to the motor drive module 12, and to the interaction module 14; the motor drive module 12 sends the electric control valve opening to the motor driver 2, and the motor driver 2 controls the operation of the motor according to the electric control valve opening; the interaction module 14 sends the electric control valve opening to the touch screen 3 for display.

[0057] Specifically, the main control circuit board includes a main control module, a motor drive module, a pressure acquisition module, an interaction module, a communication module, a storage module and a voltage conversion module. The functions of the main control circuit board are decomposed into each module, which is conducive to improving work efficiency.

[0058] like Figure 1 As shown, in an optional embodiment of the present invention, a communication interface 6 is provided on the main control circuit board 1, and the communication interface 6 is connected to the user end through a network cable.

[0059] Specifically, the communication interface provided on the main control circuit board is connected to the user end through a network cable to realize data transmission or interaction between the control device and the user end (or control end), thereby simplifying the structure of the device.

[0060] like Figure 1 As shown, in an optional embodiment of the present invention, a pressure collection interface 7 is provided on the main control circuit board 1, and the pressure collection interface 7 is connected to a pressure measuring point on the pipeline.

[0061] Specifically, the pressure collection interface provided on the main control circuit board is connected to the pressure measuring point on the pipeline, so that the main control circuit board can receive the real-time pressure parameters of the pipeline. The structure is simple and easy to use.

[0062] like Figure 1 As shown, in an optional embodiment of the present invention, the motor driver 2 is provided with a motor interface 8, and the motor interface 8 is connected to a motor.

[0063] Specifically, the motor interface on the motor driver is used to connect with the motor, so that the control device can control the operation of the motor and improve the control effect.

[0064] In an optional embodiment of the present invention, the motor driver is a stepper motor driver.

[0065] Specifically, the stepper motor driver can accurately control the number of steps of the stepper motor, thereby achieving high-precision motion control. Using the stepper motor driver to control the pipeline opening is beneficial to improving the control effect of the pipeline pressure.

[0066] In an optional embodiment of the present invention, the communication module 15 is an Ethernet communication module.

[0067] Specifically, using the Ethernet communication module to realize data transmission between the main control module and the outside world can improve transmission efficiency and have better flexibility and scalability.

[0068] like Figure 8As shown, in an optional embodiment of the present invention, the housing 5 includes a main board 51, and a first side panel 52, a second side panel 53 and a third side panel 54 are mounted on the main board 51, and the first side panel 52 and the third side panel 54 are arranged opposite to each other and are both connected to the second side panel 53.

[0069] Specifically, the main board, the first side board, the second side board and the third side board can be connected by bolts, which is convenient for disassembly and assembly, and the size of the shell can be adjusted according to the size of each internal module. In specific implementation, the first side board, the second side board and the third side board can be vertically installed on the main board based on the main board, and the fourth side board can be arranged at a position opposite to the main board, and a through hole is left on the fourth side board for each interface to pass through, so as to facilitate installation and use.

[0070] like Figure 8 As shown, in an optional embodiment of the present invention, a mounting hole 511 for mounting the touch screen 3 is provided on the mainboard 51 .

[0071] Specifically, the touch screen is installed at the installation hole, which plays a role in fixing the touch screen and is conducive to improving the stability of the device.

[0072] like Figure 8 As shown, in an optional embodiment of the present invention, both the first side panel 52 and the third side panel 54 are provided with ventilation holes 55 .

[0073] Specifically, the vents can be used to dissipate the heat generated when the device is working, thereby improving safety.

[0074] A specific embodiment of the pipeline pressure control device proposed in the embodiment of the present invention includes:

[0075] The pipeline pressure control device of this embodiment includes: a housing 5, in which a main control circuit board 1, a motor driver 2, a touch screen 3, a power supply 4, a pressure acquisition interface 7, a power input interface 9, a communication interface 6 and a motor interface 8 are installed. Among them, the main control circuit board 1 is responsible for the logic control and algorithm implementation of the entire pressure control device, the motor driver 2 receives the PWM (pulse width modulation) level signal from the main control circuit board 1, realizes the high-precision control of the stepper motor, and a friendly screen is designed on the touch screen 3 according to the function of the pipeline pressure control device to realize local human-computer interaction. The power supply 4 provides a 24V DC power supply for all hardware facilities in the pipeline pressure control device. The pressure acquisition interface 7 is responsible for connecting to the pressure measurement point on the pipeline. The power input interface 9 is responsible for connecting to the 220V AC power supply line at the industrial site. The communication interface 6 is responsible for connecting to the remote control computer through the industrial Ethernet link and realizing remote control through the standard MODBUSTCP (application layer message passing protocol).

[0076] like Figure 2 As shown, it is a schematic diagram of the circuit principle of the main control circuit board 1. The main control module refers to the GD32F407 minimum system (the GD32F407 minimum system is an embedded system based on the GD32F407 microcontroller, which contains the most basic components required for the operation of the microcontroller). In the main control circuit board 1, it mainly includes a main control module 11, a high-precision pressure acquisition module 13, a motor drive module 12, an Ethernet communication module 15, a storage module 16, a voltage conversion module 17 and an interaction module 14 (human-computer interaction module). Among them, the high-precision pressure acquisition module 13, the motor drive module 12, the Ethernet communication module 15, the storage module 16, the voltage conversion module 17 and the interaction module 14 are all electrically connected to the main control module 11.

[0077] like Figure 3 The circuit principle diagram of the high-precision pressure acquisition module 13 is shown in FIG. In the circuit, the pressure electrical signal on the pipeline is converted into a standard voltage signal through a voltage-current conversion circuit, and then transmitted to the analog acquisition circuit, which is mainly composed of an AD7606 high-precision analog acquisition chip, and can realize 8-channel 200kHz, 16bit synchronous high-speed and high-precision acquisition. Then the GD32F407 chip communicates with the AD7606 chip through its SPI (serial peripheral interface) peripherals, and cooperates with external interrupts and GPIO (digital signal interface) signals to realize multi-channel high-precision pressure acquisition.

[0078] Figure 4 The circuit principle diagram of the motor drive module 12. In this circuit, when the stepper motor needs to be controlled, the PWM (pulse width modulation) peripheral output level signal of the GD32F407 main control chip is used, and the interrupt is used to determine the number of PWM pulse outputs. The output PWM level signal is converted into a control signal recognized by the motor driver by the level conversion circuit, thereby completing the adjustable drive control of the stepper motor.

[0079] Figure 5 The schematic diagram of the circuit principle of the Ethernet communication module 15. In this circuit, data is exchanged with the Ethernet communication circuit through the SPI peripheral of the GD32F407 main control chip. Among them, the Ethernet communication circuit is mainly composed of the W5500 hardware protocol stack chip, which cooperates with the crystal oscillator, LDO chip and resistor and capacitor to complete the TCP communication function.

[0080] Figure 6 Schematic diagram of the circuit principle of the storage module 16. In this circuit, the I2C peripheral of the GD32F407 main control chip communicates with the ferroelectric memory to achieve the access of various parameters.

[0081] Figure 7It is a schematic diagram of the circuit principle of the human-computer interaction module 14. In this circuit, the data interaction with the touch screen is realized through the USART peripheral (hardware support circuit of serial communication) of the GD32F407 main control chip, so as to realize human-computer interaction. The touch screen 3 can be a serial touch screen of Diwen Technology. The touch screen 3 includes 5 screens, mainly including the working screen, the common parameter screen, the regulator parameter screen, the sensor parameter screen and the self-tuning screen. Among them, the working screen mainly sets the target pressure and opening, and displays the sensor, the current opening and the pressure deviation in real time, as well as the acquisition mode, the control mode and the adjustment mode. The common parameter screen mainly includes the settings of the acquisition module, the control mode, the adjustment mode and the return operation. The regulator parameters mainly include the settings of the sensor range and unit. The self-tuning screen mainly includes the settings of the gain, the integral time, the differential time and the tuning mode, as well as the control of the tuning process such as starting tuning and forced exit.

[0082] Figure 8 Schematic diagram of the housing 5. The housing 5 includes a main board 51 and a plurality of side panels, and ventilation holes are respectively provided on two opposite side panels. The main board 51 is provided with a mounting hole 511 for the touch screen 3, and a rear panel (not shown) opposite to the main board 51 is provided with panel mounting connectors for a pressure acquisition interface, a power input interface, a communication interface and a motor interface. The housing 5 and the interface can realize the panel mounting of the touch screen 3, the internal fixation of the main control circuit board 1, the motor driver and the switching power supply, as well as the support of the pressure acquisition interface, the 220VAC power supply interface, the Ethernet communication interface and the stepper motor interface.

[0083] like Fig. 9 As shown, an embodiment of the present invention provides a pipeline pressure control method, which is applied to a pipeline pressure control device as described in any one of the above embodiments, and the method comprises the following steps:

[0084] Step 101, the main control circuit board 1 calculates the opening of the electric regulating valve according to the received target pipeline pressure parameter, and sends it to the motor driver 2;

[0085] Step 102, the motor driver 2 controls the operation of the motor according to the opening of the electric regulating valve;

[0086] Step 103, the touch screen 3 is used to receive the target pipeline pressure parameter and / or the target electric regulating valve opening, and display the real-time pipeline pressure parameter and / or the real-time electric regulating valve opening;

[0087] Step 104 , the power supply 4 supplies power to the main control circuit board 1 , the motor driver 2 , and the touch screen 3 .

[0088] The pipeline pressure control method proposed in the embodiment of the present invention calculates the electric control valve opening according to the received target pipeline pressure parameters through the main control circuit board, and sends it to the motor driver. The motor driver controls the operation of the motor according to the electric control valve opening. It can adapt to the changes in different pipeline pressures and realize high-precision and stable control of the pipeline pressure of the experimental system. It has the advantages of simple method and good control effect.

[0089] In an optional embodiment of the present invention, the method specifically comprises the following steps:

[0090] The pressure acquisition module 13 sends the acquired real-time pipeline pressure parameters to the main control module 11;

[0091] The main control module 11 calculates the electric regulating valve opening according to the real-time pipeline pressure parameter and the target pipeline pressure parameter received by the communication module 15, and sends it to the storage module 16 for storage, to the motor drive module 12, and to the interaction module 14;

[0092] The motor driving module 12 sends the electric regulating valve opening to the motor driver 2, and the motor driver 2 controls the operation of the motor according to the electric regulating valve opening;

[0093] The interactive module 14 sends the electric regulating valve opening to the touch screen 3 for display.

[0094] In an optional embodiment of the present invention, the method specifically comprises the following steps:

[0095] Step 111, the pressure acquisition module 13 sends the acquired real-time pipeline pressure parameters to the main control module 11 in the main control circuit board 1;

[0096] Step 112, the main control module 11 calculates the electric regulating valve opening according to the real-time pipeline pressure parameter and the target pipeline pressure parameter received by the communication module 15, and sends it to the storage module 16 for storage, to the motor drive module 12, and to the interaction module 14;

[0097] Step 113, the motor driving module 12 sends the electric regulating valve opening to the motor driver 2, so that the motor driver 2 controls the motor to run, and the motor opens the pipeline electric regulating valve to the electric regulating valve opening;

[0098] Step 114, the interactive module 14 sends the electric regulating valve opening to the touch screen 3;

[0099] Step 115, the touch screen 3 is used to receive the target pipeline pressure parameter and / or the target electric regulating valve opening, and display the real-time pipeline pressure parameter and / or the real-time electric regulating valve opening collected by the pressure collection module 13;

[0100] Step 116 , the power supply 4 supplies power to the main control circuit board 1 , the motor driver 2 , and the touch screen 3 .

[0101] like Fig.10 As shown, a specific embodiment of the pipeline pressure control method of the embodiment of the present invention includes:

[0102] S1: First, power on and initialize the main control circuit board of the pipeline pressure control device.

[0103] S2: Get the latest parameter configuration (such as target electric regulating valve opening, etc.) through Ethernet communication, and update the touch screen display configuration parameters.

[0104] S3: Determine the current working mode of the pipeline pressure control device. If it is manual mode, enter step S4.

[0105] S4: If the self-tuning function is not enabled, go to step S5.

[0106] S5: Periodically update the FLASH parameter storage (store and update all generated parameters or data according to a preset period) to save the latest setting parameters obtained by human-computer interaction and communication.

[0107] S6: Determine whether to start the return operation, if not, proceed to step S7.

[0108] S7: The motor is driven to move to the desired position according to the opening of the electric regulating valve, and the process loops into step S2.

[0109] S8: If the automatic mode is turned on during the process, the pressure is automatically controlled according to the PID parameters.

[0110] S9: Real-time detection of whether the pressure difference is within the allowable range, if it is within the allowable range, then enter step S2. If it is not within the allowable range, then enter step S10.

[0111] S10: Calculate the PWM output value according to relevant parameters, and proceed to step S7 to complete the opening control of the electric regulating valve.

[0112] S11: If the self-tuning function is turned on in the process, the parameters are adjusted according to the self-tuning algorithm, and then the PID pressure automatic control in step S8 is entered.

[0113] S12: If the return operation is triggered during the process, the pressure controller controls the valve to automatically return to the fully closed position, and then enters step S5.

[0114] Among them, Fig.11 As shown, the process of the self-tuning method in step S11 includes:

[0115] S111: Enter the adaptive algorithm parameter setting process.

[0116] S112: Calculate basic PID parameter values ​​according to the critical ratio method as a basis for subsequent parameter adjustment. In some cases, the PID parameters may directly reach the optimal value.

[0117] S113: Determine whether the difference fluctuation is within the allowable range. If so, proceed to step S117; if not, proceed to step S114.

[0118] S114: Adjust PID parameters according to the difference fluctuation size and the pressure controller opening.

[0119] S115: Determine whether the adjustment time A has been exceeded. If not, proceed to step S113 to continue adjusting the parameters. If the time has been exceeded, proceed to step S116.

[0120] S116: According to the difference fluctuation size and the pressure controller opening adjustment coefficient B, then enter step S113 to continue adjusting the parameters.

[0121] S117: If the difference fluctuation is within the allowable range, it indicates that the self-tuning is completed, and the PID pressure automatic control mode is entered.

[0122] The pipeline pressure control method of the embodiment of the present invention adopts a self-developed main control circuit board, a customized parameter self-tuning method, an automatic control method and a human-computer interaction mechanism, which can achieve high-precision acquisition and continuous and stable control of pipeline pressure. The actual process system experiment has verified that the pipeline pressure control device and method have good functions, not only can fast parameter tuning be achieved at different pipeline positions in the system, but also after the parameters are adjusted, the pipeline pressure can be stably maintained within the allowable threshold range, which has important application value in the actual process system.

[0123] It should be noted that in the apparatus and method of the present invention, it is obvious that each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be regarded as equivalent solutions of the present invention. In addition, the steps of performing the above series of processes can naturally be performed in chronological order according to the order of description, but do not necessarily need to be performed in chronological order. Some steps can be performed in parallel, crosswise or independently of each other.

[0124] It should be noted that, in the above-mentioned embodiments, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "include one..." do not exclude the existence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the implementation of the above-mentioned embodiments is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0125] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A pipeline pressure control device, characterized in that: include: Main control circuit board (1); A motor driver (2) electrically connected to the main control circuit board (1); A touch screen (3) electrically connected to the main control circuit board (1); A power supply (4) electrically connected to the main control circuit board (1), wherein the power supply (4) is electrically connected to the motor driver (2) and the touch screen (3); A housing (5), wherein the main control circuit board (1), the motor driver (2), the touch screen (3) and the power supply (4) are all installed in the housing (5); The main control circuit board (1) calculates the electric control valve opening according to the received target pipeline pressure parameter and sends it to the motor driver (2); the motor driver (2) controls the operation of the motor according to the electric control valve opening; the touch screen (3) is used to receive the target pipeline pressure parameter and / or the target electric control valve opening, and to display the real-time pipeline pressure parameter and / or the real-time electric control valve opening; the power supply (4) supplies power to the main control circuit board (1), the motor driver (2) and the touch screen (3).

2. The pipeline pressure control device according to claim 1, characterized in that: The main control circuit board (1) comprises: Main control module (11); A motor drive module (12), a pressure acquisition module (13), an interaction module (14), a communication module (15), a storage module (16) and a voltage conversion module (17) electrically connected to the main control module (11); The main control module (11), the motor drive module (12), the pressure acquisition module (13), the interaction module (14), the communication module (15), the storage module (16) and the voltage conversion module (17) are all electrically connected to the power supply (4); the motor drive module (12) is electrically connected to the motor driver (2); and the interaction module (14) is electrically connected to the touch screen (3); The pressure acquisition module (13) sends the collected real-time pipeline pressure parameters to the main control module (11); the main control module (11) calculates the electric control valve opening according to the real-time pipeline pressure parameters and the target pipeline pressure parameters received through the communication module (15), and sends the calculated value to the storage module (16) for storage, to the motor drive module (12), and to the interaction module (14); the motor drive module (12) sends the electric control valve opening to the motor driver (2); the motor driver (2) controls the operation of the motor according to the electric control valve opening; and the interaction module (14) sends the electric control valve opening to the touch screen (3) for display.

3. The pipeline pressure control device according to claim 1, characterized in that: The main control circuit board (1) is provided with a communication interface (6), and the communication interface (6) is connected to the user end via a network cable.

4. The pipeline pressure control device according to claim 1, characterized in that: The main control circuit board (1) is provided with a pressure collection interface (7), and the pressure collection interface (7) is connected to a pressure measurement point on the pipeline.

5. The pipeline pressure control device according to claim 1, characterized in that: The motor driver (2) is provided with a motor interface (8), and the motor interface (8) is connected to a motor.

6. The pipeline pressure control device according to claim 2, characterized in that: The communication module (15) is an Ethernet communication module.

7. The pipeline pressure control device according to claim 1, characterized in that: The housing (5) comprises a main board (51), on which a first side board (52), a second side board (53) and a third side board (54) are mounted, wherein the first side board (52) and the third side board (54) are arranged opposite to each other and are both connected to the second side board (53).

8. The pipeline pressure control device according to claim 7, characterized in that: The mainboard (51) is provided with a mounting hole (511) for mounting the touch screen (3).

9. The pipeline pressure control device according to claim 7, characterized in that: The first side plate (52) and the third side plate (54) are both provided with ventilation holes (55).

10. A pipeline pressure control method, characterized in that: Applied to the pipeline pressure control device according to any one of claims 1 to 9, the method comprises: The main control circuit board (1) calculates the opening of the electric regulating valve according to the received target pipeline pressure parameter, and sends it to the motor driver (2); The motor driver (2) controls the operation of the motor according to the opening of the electric regulating valve; The touch screen (3) is used to receive target pipeline pressure parameters and / or target electric regulating valve opening, and to display real-time pipeline pressure parameters and / or real-time electric regulating valve opening; The power supply (4) supplies power to the main control circuit board (1), the motor driver (2), and the touch screen (3).

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