LKJ logical processing unit based on double-CPU safety architecture

Abstract

The invention discloses a LKJ logical processing unit. The LKJ logical processing unit strips the safety function and the non-safety function, and integrates the monitoring and processing functions ofa core; the logic processing unit adopts a double-CPU safety architecture design so as to realize the safe processing design of two-out-of-two; each CPU supports the operation of multiple core processors, each core processor supports the operation of a co-processor, and for any one CPU, one core processor is responsible for the functions of the safety processing and the system framework, namely the functions of the two-out-of-two safe processing of the data input and output and the hardware driving and system framework; the other core processor is responsible for the service function of the LKJ, namely, the functions of data analysis, logic judgment and the like in the LKJ train speed control process; and the two core processors operate at the same time. The LKJ logical processing unit has the technical advantages that functions such as non-safe data recording and the like are stripped, and the double-CPU double-core safe architecture design is adopted.

Description

technical field [0001] The invention relates to the field of train automatic control, in particular to a novel safe logic processing unit of a train operation monitoring system. Background technique [0002] The train running monitoring system (LKJ) is a train speed control system whose main goal is to prevent the train from rushing into the signal, run overspeed and assist the driver to improve the control ability. The safety control of train operation is the core function of LKJ. With the rapid acceleration of China's railways, as well as large-scale construction and reconstruction of railway lines, a large number of new operation modes have been implemented, and the demand for transportation safety control has increased significantly, which puts forward higher requirements for LKJ's safety and business processing capabilities. [0003] In the monitoring host of the existing train operation monitoring system, the main core functions of LKJ are realized by the monitoring a...

AI Technical Summary

Problems solved by technology

The security function is not independent. It is too complicated for a CPU to implement the core monitoring and processing functions. The processing performance of a single-core CPU is poor, and the clock frequency limits the business processing capability and the communication rate of the bus.

Therefore, it brings great risks to the safety and working performance of LKJ.

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