FPGA+8051 system controller

Abstract

The invention provides an FPGA+8051 system controller. The system controller comprises a power supply module, an FPGA system module, an AD conversion module, an input isolation conversion module, an output isolation driving module, an 8051 single-chip microcomputer system and a network communication interface module; an FPGA+8051 control module is adopted to replace a PLC: a mature FPGA+8051 architecture mode is used for realizing logic control and network communication control; the quality grades of components are improved, the circuit design is rechecked and re-calculated, and the derating design is carried out, so that the I-stage derating of the components is guaranteed, and the working reliability of the controller is improved; an internal circuit can be clearly understood, so that afault can be rapidly positioned and eliminated after a product breaks down; and the product has the same power supply mode and mechanical interface as the PLC, and after PLC production is stopped or the PLC is updated, the FPGA+8051 control module can completely replace the PLC.

Description

technical field [0001] The invention relates to an FPGA+8051 system controller. Background technique [0002] The use of PLC in the military industry presents many disadvantages, as follows: [0003] (1) PLC is an imported industrial-grade device. In the process of military-grade assessment, due to the lack of quality grades and mechanical design of components, it is necessary to reinforce the PLC controller and spray three-proof and related devices on the printed board. Potting treatment. Circuits and components may be damaged during processing, so the PLC needs to be screened and used after reinforcement. The processing flow is relatively cumbersome and prone to failure. [0004] (2) The network communication interface in the PLC is connected by RJ45, and poor contact may occur during the vibration process. When designing the FPGA controller, a military-grade connector is used to connect to ensure product reliability. [0005] (3) PLC devices are general-purpose device...

AI Technical Summary

Problems solved by technology

[0005] (3) PLC devices are general-purpose devices. In the process of use, few functions are actually used, which wastes controller resources.

[0006] (4) The underlying software of the PLC controller is developed by Siemens, and the specific source code is mastered by Siemens. Logic programming is performed on it during use. It is not clear whether there is a back door, and there are potential safety hazards

[0007] (5) The PLC procurement cycle is long, and there is a situation of version upgrades, which is not conducive to the maintenance and guarantee of military products

In addition, because the internal circuit principle of the PLC and the distribution of the printed board are not clear, when the PLC fails, it is not conducive to troubleshooting and processing, and the only way to deal with it is to replace the entire PLC.

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