PLC device based on domestic core processor

Abstract

The utility model discloses a PLC device based on a domestic core processor, relates to the field of PLC programmable logic controllers, and solves the technical problems that domestic chip PLCs are insufficient in maturity and lack of standard unification, and application in the civil field is not popularized yet. Comprising a DPU main control module, an I / O module, a communication module, a power supply module and a far-end interface module. The DPU main control module is used for executing programming logic, monitoring input and output signals and processing data, and is also used for acquiring external sensor data through the I / O module and carrying out data exchange and communication with other external equipment or systems through the communication module; the communication module is used for realizing communication among the internal modules, and can be combined with the far-end interface module to realize data transmission between remote equipment and a system; the power supply module is used for supplying power to each module; cAN-FD bus communication is adopted among the modules, and the control function is achieved in a cooperative mode. The device has a good application prospect in the field of industrial automation.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of PLC programmable logic controller, concretely to a PLC device based on domestic core processor. BACKGROUND

[0002] Programmable logic controller (PLC) is the core equipment of industrial field data acquisition and real-time control. It adopts a programmable memory to store instructions for performing logic operation, sequential control, timing, counting and arithmetic operation in its internal storage, and controls various types of mechanical equipment or production process through digital or analog input and output. At present, PLC equipment has been widely popularized in industrial automation control in China, and has been deeply applied in emerging Internet of Things technology, but the main control, communication, storage and other chips involved in PLC equipment have been controlled by foreign countries for a long time, the core architecture and code are not open, and the later vulnerabilities are difficult to predict and avoid, which poses a risk to the safety of China's industrial control industry, therefore, developing PLC equipment based on domestic core chips is the trend of the times. At present, domestic chip PLC has not been popularized in the application of military industry, aerospace and other industrial control fields, and has not formed large-scale popularization and application. SUMMARY

[0003] In order to solve the technical problems of insufficient maturity of domestic chip PLC, lack of standard unification and non-popularization of civil field application in the prior art, the utility model provides a PLC device based on domestic core processor, which comprises: DPU main control module, I / O module, communication module, power module and remote interface module.

[0004] The DPU main control module is used for executing programming logic, monitoring input and output signals and processing data, and is also used for acquiring external sensor data through the I / O module and exchanging and communicating data with other external devices or systems through the communication module.

[0005] The communication module is used for realizing communication between the internal modules, and can realize data transmission between remote devices and systems in combination with the remote interface module.

[0006] The power module is used for supplying power to each module.

[0007] CAN-FD bus communication is adopted between the modules to realize control function cooperatively.

[0008] Further, the DPU main control module comprises a shell, a core processing unit, a bus control unit and an interface unit.

[0009] The core processing unit, the bus control unit and the interface unit are designed on independent circuit boards and connected through a wire harness, and are all located in the main control module shell.

[0010] The CPU chip of the core processing unit adopts a T507 chip, is externally configured with a 2G LPDDR4 memory and a 16G embedded eMMC5.1 storage chip, and is simultaneously configured with a gigabit network transceiver chip and a hundred-megabit transceiver chip; the gigabit network is used for upper computer communication, and the hundred-megabit network is used for providing an external Modbus TCP communication interface;

[0011] The bus control unit is used for bus communication between the I / O module and the communication module, is configured with a USB hub chip and four GD32E103 series single-chip MCUs, and converts a high-speed USB line led out by the core processing unit into four CAN-FD communication buses;

[0012] The interface unit is used for providing a communication interface between the external device, and is configured with an RS232 communication chip, an RS485 communication chip and a CANopen modulation chip.

[0013] Further, the I / O module is divided into eight analog input, eight analog output, 16 digital input, 16 digital output and eight thermal resistance input;

[0014] Each I / O module comprises a shell, an MCU board and an interface board;

[0015] The MCU board and the interface board are connected through a flat cable and are both located in the shell;

[0016] The main control chip of the MCU board is a GD32E103 main control chip, and is externally configured with a CAN-FD isolation transceiver chip;

[0017] The interface board is configured with a modulation circuit according to the actual signal type.

[0018] Further, the communication module comprises a shell, an MCU board and an interface board;

[0019] The MCU board and the interface board are connected through a flat cable and are both located in the shell;

[0020] The main control chip of the MCU board is a GD32E103 main control chip, and is externally configured with a CAN-FD isolation transceiver chip;

[0021] The interface board is configured with three RS485 communication chips and interfaces.

[0022] Further, the power module comprises a shell and a circuit board configured with a special power conversion chip;

[0023] The circuit board configured with the special power conversion chip is located in the shell and can realize DC 24V to DC 5V conversion.

[0024] Further, the remote interface module comprises a remote interface shell and a circuit board configured with an RJ45 network interface and matching impedance; the circuit board configured with the RJ45 network interface and matching impedance is located in the remote interface shell.

[0025] The utility model discloses the beneficial effect is as follows:

[0026] 1. The core MCU in the DPU module, peripheral I / O module and communication module in the utility model adopts domestic chip, and is adapted to domestic IDE environment, on the basis of meeting the conventional industrial control demand, can realize the domestic independent controllable of overall system.

[0027] 2. The utility model adopts advanced CAN-FD bus communication, improves data transmission performance and communication reliability BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is system architecture diagram;

[0029] Figure 2 It is DPU master module architecture schematic diagram;

[0030] Figure 3 It is I / O module architecture schematic diagram;

[0031] Figure 4 It is communication module architecture schematic diagram;

[0032] Figure 5 It is power module architecture schematic diagram;

[0033] Figure 6 It is remote interface module architecture schematic diagram;

[0034] Figure 7 It is application architecture diagram;

[0035] In the drawing, DPU master module-1, I / O module-2, communication module-3, power module-4, remote interface module-5. DETAILED DESCRIPTION

[0036] The technical scheme in the utility model will be described clearly and completely in combination with the drawings in the embodiment of the utility model. It should be understood that the specific embodiment described here is only used for illustrating and explaining the utility model, and is not used for limiting the utility model.

[0037] Embodiment 1: refer to Figure 1 Explain this embodiment, a PLC device based on domestic processor, comprising:

[0038] DPU master module 1, I / O module 2, communication module 3, power module 4, remote interface module 5;

[0039] The DPU master module 1 is used for executing programming logic, monitoring input and output signals and processing data, and is also used for acquiring external sensor data through the I / O module 2 and exchanging and communicating data with other external devices or systems through the communication module 3;

[0040] The communication module 3 is used for realizing communication between the internal modules, and can be combined with the remote interface module 5 to realize data transmission between remote devices and systems;

[0041] The power module 4 is used for supplying power to each module;

[0042] CAN-FD bus communication is adopted between the modules to realize the control function cooperatively.

[0043] Specifically, the PLC device supports at most 4 CAN-FD bus branches, including 1 main branch and 3 extension branches, each extension branch supports at most 16 bus nodes, in the case that all the 4 branches are used, according to the address configuration, one CAN broadcast node needs to be reserved, and a total of 63 bus nodes can be supported, and each node in each branch is connected through a bus connector.

[0044] The CAN-FD main branch needs to set the DPU module 1 as the starting position and the power module 4 as the end position to match the impedance. The I / O module 2 and the communication module 3 can be flexibly selected in number and position, and the number of modules is at most 16.

[0045] The DPU master module 1 comprises a shell, a core processing unit, a bus control unit and an interface unit;

[0046] The core processing unit, the bus control unit and the interface unit are designed on independent circuit boards and are connected through a wire harness and are located in the master module shell;

[0047] The CPU chip of the core processing unit adopts a T507 chip, is externally configured with a 2G LPDDR4 memory and a 16G embedded eMMC5.1 storage chip, and is simultaneously configured with a gigabit network transceiver chip and a hundred megabit transceiver chip, the gigabit network is used for upper computer communication, and the hundred megabit network is used for providing an external Modbus TCP communication interface;

[0048] The bus control unit is configured with one USB hub chip and four GD32E103 series single-chip microcomputers (MCUs), and converts one high-speed USB line led out by the core processing unit into four CAN-FD communication buses.

[0049] The interface unit is configured with one RS232 communication chip, one RS485 communication chip and one CANopen modulation chip.

[0050] Specifically, the architecture of the DPU master control module 1 is as shown in Figure 2 The T507 chip is a four-core Cortex-A53 architecture, and the highest main frequency can reach 1.5 GHz, and the operating system is a Linux system. The GD32E103 series single-chip microcomputer (MCU) is an ARM Cortex-M4 architecture; the maximum CPU main frequency is 120 MHz; the program FLASH capacity is 128 KB; and the total RAM capacity is 32 KB.

[0051] The I / O module 2 is divided into eight analog input, eight analog output, sixteen digital input, sixteen digital output and eight thermal resistance input;

[0052] Each I / O module includes a shell, an MCU board and an interface board.

[0053] The MCU board and the interface board are connected through a flat cable and are located in the shell.

[0054] The main control chip of the MCU board is a GD32E103 main control chip, and a CAN-FD isolation transceiver chip is configured peripherally.

[0055] The interface board is configured with a modulation circuit according to the actual signal type.

[0056] Specifically, as shown in Figure 3 The I / O module 2 is divided into AI (eight analog input), AO (eight analog output), DI (sixteen digital input), DO (sixteen digital output) and RTC (eight thermal resistance input).

[0057] The communication module 3 includes a shell, an MCU board and an interface board.

[0058] The MCU board and the interface board are connected through a flat cable and are located in the shell.

[0059] The main control chip of the MCU board is a GD32E103 main control chip, and a CAN-FD isolation transceiver chip is configured peripherally.

[0060] The interface board is configured with three RS485 communication chips and interfaces.

[0061] Specifically, the architecture of the communication module 3 is as shown in the figure. Figure 4 The communication module 3 is used to realize MODBUS-RTU communication. As a CAN-FD node of the branch, the communication module 3 converts external MODBUS-RTU signals into CAN-FD bus signals, and realizes information interaction with the DPU module 1 and other I / O modules 2.

[0062] The power module 4 includes a shell and a circuit board configured with a dedicated power conversion chip.

[0063] The circuit board configured with the dedicated power conversion chip is located in the shell, and can realize conversion of DC 24V to DC 5V.

[0064] Specifically, the architecture of the power module 4 is as shown in the figure. Figure 5

[0065] The remote interface module 5 includes a remote interface shell and a circuit board configured with an RJ45 network interface and matching impedance. The circuit board configured with the RJ45 network interface and matching impedance is located in the remote interface shell.

[0066] Specifically, the architecture of the remote interface module 5 is as shown in the figure. Figure 6 The remote interface module 5 is used to relay CAN-DP signals from the main frame, and at the same time provides matching impedance required by the expansion frame CAN-DP.

[0067] In embodiment 2, the overall application architecture of the PLC device is as shown in the figure. Figure 7 The PLC device realizes industrial field monitoring and control functions by cooperating with peripheral equipment and software. The overall application architecture includes an application layer, a development layer, a communication layer, a control layer and a device layer.

[0068] The application layer includes a human-machine interface for operators, which facilitates the operators to monitor the state of the device layer and issue control instructions.

[0069] The development layer includes a PLC program configuration tool, a configuration file editing tool and a visual interface editing tool. The PLC program configuration tool complies with the functions of writing, syntax compiling and simulation of IEC61131-3 target programs.

[0070] ​The practical new type uses domestic IDE software AnyControl in the development layer to realize the development environment necessary for writing and debugging PLC program.

[0071] The communication layer provides an Ethernet or serial communication interface, which can download the PLC program file compiled by the development layer to the DPU master module of the PLC device through the communication layer interface, upload the running state of the PLC device logic state machine equipment to the development layer for supervision, and realize the interaction of measurement point data / control instructions between the application layer and the control layer.

[0072] The PLC device in the control layer operates the built-in register by cyclically executing the main program, to complete system configuration, communication service, input data processing, and control data output.

[0073] The industrial sensors and actuators in the equipment layer are interconnected with the PLC device in the control layer through hardwiring or industrial bus, to realize the connection of industrial field signals and the control system.

[0074] The above embodiments are only for illustrating the technical concept and characteristics of the practical new type, and the purpose is to enable those skilled in the art to understand the content of the practical new type and implement it, and cannot limit the protection scope of the practical new type. Any equivalent changes or modifications made according to the spirit and essence of the practical new type shall be covered within the protection scope of the practical new type.

Claims

1. A PLC device based on a domestic core processor, characterized by, The application relates to a DPU (Distributed Power Unit) control system, which comprises a DPU master module (1), an I / O module (2), a communication module (3), a power module (4) and a remote interface module (5). The DPU master module (1) is used for executing programmed logic, monitoring input and output signals and processing data, and is also used for acquiring external sensor data through the I / O module (2) and exchanging and communicating data with other external devices or systems through the communication module (3). The communication module (3) is used for realizing communication among the internal modules and can realize data transmission between remote devices and systems in combination with the remote interface module (5). The power module (4) is used for supplying power to the modules. CAN-FD bus communication is adopted among the modules to realize the control function. The DPU master module (1) comprises a shell, a core processing unit, a bus control unit and an interface unit.

2. The PLC device based on a domestic core processor according to claim 1, characterized in that, The core processing unit, the bus control unit and the interface unit are independently designed on circuit boards and are connected through wires and are located in the master module shell. The CPU chip of the core processing unit adopts a T507 chip, is externally provided with a 2G LPDDR4 memory and a 16G embedded eMMC5.1 storage chip, and is simultaneously provided with a gigabit network transceiver chip and a hundred-megabit transceiver chip; the gigabit network is used for host computer communication, and the hundred-megabit network is used for providing an external Modbus TCP communication interface. The bus control unit is used for realizing bus communication between the I / O module (2) and the communication module (3), is provided with a USB hub chip and four GD32E103 series single-chip microcomputers (MCUs), and converts a high-speed USB line led out from the core processing unit into four CAN-FD communication buses. The interface unit is used for providing a communication interface between the external device, is provided with an RS232 communication chip, an RS485 communication chip and a CANopen modulation chip. The I / O module (2) is divided into eight analog quantity inputs, eight analog quantity outputs, sixteen digital quantity inputs, sixteen digital quantity outputs and eight thermistor inputs.

3. The PLC device based on a domestic core processor according to claim 1, characterized in that, Each I / O module comprises a shell, an MCU board and an interface board. The MCU board and the interface board are connected through wires and are located in the shell. The main control chip of the MCU board is a GD32E103 main control chip, and is externally provided with a CAN-FD isolation transceiver chip. The interface board is provided with a modulation circuit according to the actual signal type. The communication module (3) comprises a shell, an MCU board and an interface board.

4. The PLC device based on a domestic core processor according to claim 1, characterized in that, The MCU board and the interface board are connected through wires and are located in the shell. The main control chip of the MCU board is a GD32E103 main control chip, and is externally provided with a CAN-FD isolation transceiver chip. The interface board is provided with three RS485 communication chips and interfaces. The power module (4) comprises a shell and a circuit board provided with a special power conversion chip.

5. The PLC device based on a domestic core processor according to claim 1, characterized in that, The circuit board provided with the special power conversion chip is located in the shell and can realize DC24V to DC5V conversion. ​ 6. The PLC device based on a domestic core processor according to claim 1, characterized in that, The remote interface module (5) comprises a remote interface shell and a circuit board configured with an RJ45 network interface and matching impedance; the circuit board configured with the RJ45 network interface and matching impedance is located in the remote interface shell.

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