lkj logical processing unit based on dual cpu security architecture

Abstract

The LKJ logic processing unit of the present invention strips off safety functions and non-safety functions, and the logic processing unit centrally realizes the core monitoring and processing functions. The CPU supports the operation of multi-core processors, and each core processor supports the operation of co-processors. For any CPU, a core processor is responsible for the security processing function and the system framework function, that is, it is responsible for the security of data input and output. processing and the drive and system framework functions between the hardware; the other core processor is responsible for the business functions of LKJ, that is, the data analysis and logic judgment functions in the process of LKJ train speed control; the two core processors run at the same time. The technical advantage of the present invention is that functions such as non-safety data recording are stripped off, and the security architecture design of dual CPUs and dual cores 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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