Novel BTB pressing machine control system

Abstract

The utility model relates to the technical field of BTB pressing machines, and discloses a novel BTB pressing machine control system. The novel BTB pressing machine control system comprises an MCU module 1 used for processing digital quantity input detection, digital quantity output control, analog quantity acquisition, a pressure detection algorithm and serial port communication; the digital quantity input module 2 is used for externally connecting digital switching value input peripheral equipment, such as a sensor and a button; the digital quantity output module 3 is used for being externally connected with digital switching quantity output peripheral equipment, such as a relay and an air cylinder; compared with the prior art, the utility model has the advantages that the wiring is more convenient and simpler, and the equipment cost, the equipment volume and the equipment maintenance difficulty can be greatly reduced especially in an application scene in which multi-path BTB pressure acquisition needs to be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of BTB pressing machines, in particular to a novel BTB pressing machine control system. Background Art

[0002] Existing BTB press control systems mostly use two solutions: PLC + pressure transmitter or PLC + analog expansion module + pressure amplifier. The PLC is responsible for the electrical operation of the equipment, and the pressure transmitter or pressure amplifier + analog expansion module is responsible for pressure acquisition. The system composition is complex.

[0003] If the existing BTB pressing machine control system wants to achieve multi-channel BTB pressure acquisition, it needs to connect multiple external pressure amplifiers or pressure transmitters. This results in complex wiring, occupied equipment space, complicated control procedures, high equipment costs, and inconvenient maintenance. Therefore, a new BTB pressing machine control system is proposed to solve the above problems. Utility Model Content

[0004] (1) Technical Problems Solved In response to the deficiencies in the prior art, the present invention provides a novel BTB pressing machine control system that is capable of simultaneously integrating the electrical operation of the equipment and the multi-channel pressure acquisition function. Compared with the solution of using a PLC plus multiple pressure amplifiers or pressure transmitters, the present invention is more convenient and simpler. In application scenarios where multi-channel BTB pressure acquisition is required, the present invention has the advantages of reducing equipment costs, reducing equipment size, and reducing equipment maintenance difficulty. It solves the problem that the existing BTB pressing machine control system, if it wants to achieve multi-channel BTB pressure acquisition, needs to connect multiple pressure amplifiers or pressure transmitters, resulting in complex wiring, occupying equipment space, complex control procedures, high equipment costs, and inconvenient maintenance.

[0005] (II) Technical Solution The technical solution of the present invention to solve the above technical problems is as follows: A new BTB pressing machine control system, comprising:

[0006] MCU module 1 is used to process digital input detection, digital output control, analog acquisition, pressure detection algorithm, and serial communication; Digital input module 2 is used to connect external digital switch input peripherals, such as sensors and buttons; Digital output module 3 is used to connect external digital switch output peripherals, such as relays and cylinders; Pressure acquisition module 4, 8 routing capacitors and resistors composed of a π-type filter circuit for filtering external noise, ADC acquisition circuit for acquiring the analog voltage of the pressure sensor for pressure acquisition of the control system; 232 communication module 5 is used for data communication between the control system and the PC; 485 communication module 6 is used for data communication between the control system and the human-machine interface; The MCU module connects the digital input module, digital output module, pressure acquisition module, 232 communication module, and 485 communication module.

[0007] As a further solution of the present invention, the MCU module includes an MCU chip, model APM32F103VET6. The MCU chip is connected to the digital input module and the digital output module through a universal IO port, connected to the pressure acquisition module through an SPI bus, and connected to the 232 communication module and the 485 communication module through a UART bus.

[0008] As a further solution of the present invention, the digital input module includes multiple input optocoupler isolation circuits, which include input isolation optocouplers, pull-up resistors, and input wiring terminals. The input end of the input isolation optocoupler is connected to the digital switch input peripheral through the input wiring terminal, and the output end of the isolation optocoupler is connected to the MCU module through a general IO port.

[0009] As a further solution of the present invention, the digital output module includes multiple output optocoupler isolation circuits, which include output isolation optocouplers, current limiting resistors, power transistors, and output terminals. The input end of the output isolation optocoupler is connected to the MCU module through a general IO port, and the output end of the output isolation optocoupler is connected to the base of the power transistor through a current limiting resistor, and the collector of the power transistor is connected to the output terminal.

[0010] As a further solution of the present invention, the pressure acquisition module includes an ADC chip, a π-type filter circuit, and external wiring terminals. The ADC chip model is AD7124-8; the ADC chip is connected to the MCU module via an SPI bus, the output end of the π-type filter circuit is connected to the differential input port of the ADC chip, and the input end of the π-type filter circuit is connected to the pressure sensor through the external wiring terminals.

[0011] As a further solution of the present invention, the input end of the 232 communication module is connected to the MCU module via a UART bus, and the output end of the 232 communication module is connected to the PC via a wiring terminal.

[0012] As a further solution of the present invention, the input end of the 485 communication module is connected to the MCU module through the UART bus, and the output end of the 485 communication module is connected to the human-machine interface through a terminal block.

[0013] Compared with the existing technology, the beneficial effects of the present invention are: the present invention can simultaneously integrate the electrical action of the equipment and the multi-channel pressure acquisition function. The use of the present invention is more convenient and simple than using PLC plus multiple pressure amplifiers or pressure transmitters. When it is necessary to realize multi-channel BTB pressure acquisition in the application scenario, it can reduce the equipment cost, reduce the size of the equipment, and reduce the difficulty of equipment maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of a new BTB press control system. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0016] In the embodiment, a new BTB press combining machine control system is given by figure 1, the utility model discloses: MCU module 1 for processing digital input detection, digital output control, analog quantity acquisition, pressure detection algorithm, serial communication;Digital input module 2 for external digital switching quantity input peripherals, such as sensor and button;Digital output module 3 for external digital switching quantity output peripherals, such as relay and air cylinder;Pressure acquisition module 4, 8 way capacitor and resistance Π type filter circuit for filtering external noise, ADC acquisition circuit for collecting the analog voltage of pressure sensor, for the pressure acquisition of control system;232 communication module 5 for the data communication between control system and PC;485 communication module 6 for the data communication between control system and man-machine interface;MCU module connects digital input module, digital output module, pressure acquisition module, 232 communication module, 485 communication module.

[0017] In specific embodiments, the pressure sensor signal is filtered by the Π type filter circuit of the pressure acquisition module 4 after filtering noise, and enters the differential input port of the ADC chip, and after analog-digital conversion of the ADC chip, feedback is given to the MCU module 1, and the operating system calculates the voltage signal of the pressure sensor when the load is empty and the voltage signal of the standard pressure, so as to realize real-time pressure acquisition of the pressure sensor.

[0018] The MCU module includes an MCU chip, the model is APM32F103VET6, the MCU chip is connected with the digital input module and the digital output module through a general IO port, connected with the pressure acquisition module through an SPI bus, connected with the 232 communication module and the 485 communication module through a UART bus.

[0019] In the embodiment, please refer to figure 1, the MCU module 1 is the control center of the system, and a single-chip microcomputer is selected as the main control chip.

[0020] The digital input module includes a plurality of input optocoupler isolation circuits, the input optocoupler isolation circuit includes an input isolation optocoupler, a pull-up resistor and an input terminal, the input terminal of the input isolation optocoupler is connected to the digital switching quantity input peripherals through the input terminal, and the output terminal of the isolation optocoupler is connected to the MCU module through a general IO port.

[0021] In the embodiment, please refer to figure 1, the digital input module 2 includes an optocoupler isolation circuit, the system

[0022] The switch signals of buttons, sensors, etc. are connected to the input end of the optocoupler isolation circuit, and the output end of the optocoupler isolation circuit is connected to the IO port of MCU module 1, thereby realizing the detection of switch signals such as buttons and sensors by the operating system.

[0023] The digital output module includes multiple output optocoupler isolation circuits, which include output isolation optocouplers, current-limiting resistors, power transistors, and output terminals. The input end of the output isolation optocoupler is connected to the MCU module through a general IO port, and the output end of the output isolation optocoupler is connected to the base of the power transistor through a current-limiting resistor. The collector of the power transistor is connected to the output terminal.

[0024] In this embodiment (see Figure 1), digital output module 3 includes an optocoupler isolation circuit and a power amplifier circuit. The negative terminal of the system's solenoid valve and other peripherals is connected to the output of the power amplifier circuit. The output of the optocoupler isolation circuit is connected to the output of the power amplifier circuit. The IO port of MCU module 1 is connected to the input of the optocoupler isolation circuit, enabling the operating system to control the solenoid valve on and off.

[0025] The pressure acquisition module includes an ADC chip, a π-type filter circuit, and external wiring terminals. The ADC chip model is AD7124-8. The ADC chip is connected to the MCU module via the SPI bus. The output end of the π-type filter circuit is connected to the differential input port of the ADC chip, and the input end of the π-type filter circuit is connected to the pressure sensor through the external wiring terminals.

[0026] In this embodiment: Please refer to Figure 1, the pressure acquisition module 4 is composed of the 1st π-type filter circuit, the 2nd π-type filter circuit, the 3rd π-type filter circuit, the 4th π-type filter circuit, the 5th π-type filter circuit, the 6th π-type filter circuit, the 7th π-type filter circuit, the 8th π-type filter circuit, and an ADC. The pressure sensor is connected to the input end of the π-type filter circuit, and the output end of the π-type filter circuit is connected to the differential input end of the ADC. The ADC is connected to the IO end of the MCU module 1 through the SPI bus.

[0027] The input end of the 232 communication module is connected to the MCU module through the UART bus, and the output end of the 232 communication module is connected to the PC through the wiring terminal.

[0028] In this embodiment: please refer to FIG1 , the 232 communication module 5 includes a 232 conversion circuit, and the output end of the 232 circuit is connected to an external PC for controlling data communication between the control system and the PC.

[0029] The input end of the 485 communication module is connected to the MCU module through the UART bus, and the output end of the 485 communication module is connected to the human-machine interface through the wiring terminal.

[0030] In this embodiment: please refer to FIG1 , the 485 communication module 6 includes a 485 conversion circuit, and the output end of the 485 circuit is connected to an external human-machine interface for controlling data communication between the control system and the human-machine interface.

[0031] The system of this utility model adopts a single-chip microcomputer as the main control chip, and directly completes the pressure acquisition of multiple pressure sensors through the ADC chip. It also integrates the switch input signal detection, switch output signal control, and serial port data communication functions. The electrical action control of the equipment system and the multi-channel pressure acquisition function can be completed through a single motherboard solution.

[0032] Compared with the existing technology, the advantages of the present invention are: The wiring of the present invention is more convenient and simple, especially when it is necessary to realize multi-channel BTB pressure acquisition application scenario, it can greatly reduce equipment costs, reduce equipment size, and reduce equipment maintenance difficulty.

[0033] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new type of BTB pressing machine control system, characterized by: The new BTB press control system includes: MCU module (1), used to process digital input detection, digital output control, analog acquisition, pressure detection algorithm, and serial communication; Digital input module (2), used for connecting external digital switch input peripherals, such as sensors and buttons; Digital output module (3), used for connecting external digital switch output peripherals, such as relays and cylinders; The pressure acquisition module (4) comprises a π-type filter circuit composed of 8 routing capacitors and resistors for filtering external noise, and an ADC acquisition circuit for acquiring the analog voltage of the pressure sensor for pressure acquisition of the control system; 232 communication module (5), used for data communication between the control system and the PC; 485 communication module (6), used for data communication between the control system and the human-machine interface; The MCU module is connected to the digital input module, digital output module, pressure acquisition module, 232 communication module, and 485 communication module.

2. A novel BTB pressing machine control system according to claim 1, characterized in that: The MCU module includes an MCU chip, model APM32F103VET6. The MCU chip is connected to the digital input module and the digital output module through a universal IO port, connected to the pressure acquisition module through an SPI bus, and connected to the 232 communication module and the 485 communication module through a UART bus.

3. The novel BTB pressing machine control system according to claim 1 is characterized in that: The digital input module includes multiple input optocoupler isolation circuits, which include input isolation optocouplers, pull-up resistors, and input wiring terminals. The input end of the input isolation optocoupler is connected to the digital switch input peripheral through the input wiring terminals, and the output end of the isolation optocoupler is connected to the MCU module through a general IO port.

4. The novel BTB pressing machine control system according to claim 1 is characterized in that: The digital output module includes multiple output optocoupler isolation circuits, which include output isolation optocouplers, current limiting resistors, power transistors, and output terminals. The input end of the output isolation optocoupler is connected to the MCU module through a general IO port, and the output end of the output isolation optocoupler is connected to the base of the power transistor through a current limiting resistor. The collector of the power transistor is connected to the output terminal.

5. The novel BTB pressing machine control system according to claim 1 is characterized in that: The pressure acquisition module includes an ADC chip, a π-type filter circuit, and external wiring terminals. The ADC chip model is AD7124-8. The ADC chip is connected to the MCU module via the SPI bus. The output end of the π-type filter circuit is connected to the differential input port of the ADC chip, and the input end of the π-type filter circuit is connected to the pressure sensor through the external wiring terminals.

6. The novel BTB pressing machine control system according to claim 1 is characterized in that: The input end of the 232 communication module is connected to the MCU module through the UART bus, and the output end of the 232 communication module is connected to the PC through the wiring terminal.

7. The novel BTB pressing machine control system according to claim 1 is characterized in that: The input end of the 485 communication module is connected to the MCU module through the UART bus, and the output end of the 485 communication module is connected to the human-machine interface through the terminal block.

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