A dcs capacity expansion device

Abstract

The invention discloses a DCS capacity expanding device which comprises the components of an FPGA module, a fiber communication interface circuit, an LVDS conversion circuit, a communication interfacecircuit, a cabinet, a slot number interface circuit and an electrical interface circuit. As a communication bridge between a master controller board and an I / O board in an I / O cabinet in a nuclear power plant digitalizer control system, data receiving, data distribution, data gathering and data reporting are finished through the FPGA, thereby performing basic frame detection and coding and decoding on the data and monitoring the connection state of the communication link. The DCS capacity expanding device which supports single configuration, master-slave hot backup and loo2D architecture canreliably finish a communication expansion function between the master controller board and the I / O board in real time, thereby satisfying requirements for point-to-point safe grade communication isolation and quick response, and realizing high suitability for use in the field of the nuclear power plant digitalizer control system.

Description

technical field [0001] The invention relates to the field of digital instrumentation and control of nuclear power plants, in particular to a DCS capacity expansion device. Background technique [0002] Nuclear power plant digital control system (Digital Control System, referred to as DCS) is the information nerve and control center of the nuclear power plant, which plays a vital role in ensuring the safe, reliable, stable and economical operation of the nuclear power plant and improving the level of production management. In DCS systems at home and abroad, communication expansion devices are often used between the main control chassis and the I / O chassis to expand the data collected by the system, establish uplink and downlink data interaction logic channels, and realize communication isolation and communication determinism in different chassis. [0003] With the rapid development of technology, in various fields of communication, the speed of data transmission is increasing...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a DCS capacity expansion device, which solves the technical problems of the existing system transmission rate is too low and the CPU has insufficient data processing capacity, and uses a high-speed serial communication interface to complete the collection of data from multiple signal acquisition boards, Processing and uploading to realize the function of capacity expansion

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