Full-electronic security computer interlocking system

Abstract

The invention discloses a full-electronic security computer interlocking system. The full-electronic security computer interlocking system comprises a special railway security computer, an interlocker, a control and display machine and an electronic executing unit subsystem, wherein the special railway security computer comprises two security computers as a master computer and a spare computer; each security computer comprises a CPU (central processing unit) board and multiple communication boards; data transmission and data synchronization between a first CPU module and a second CPU module of the CPU board are finished through a two-port RAM (random access memory) and interrupt operation; the CPU board and the communication boards in a same system exchange data through the two-port RAM and the interrupt operation; during system operation, the first CPU module and the second CPU module output control signals for driving a master relay; and a normally open contact of the master relay is used for controlling acting power of onboard safety relays of all the communication boards. By a working method of the full-electronic security computer interlocking system, the special railway security computer can achieve functional safety of a double 2-vote-2 platform, can achieve short-period task-level synchronization of a single computer and two computers, and can achieve seamless handover under fault conditions.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a railway special-purpose safety computer for an all-electronic safety computer interlocking system. Background technique [0002] In recent years, with the increasingly fierce competition in the transportation market, railways in various countries have actively adopted new technologies in order to achieve speed-up, high-speed and heavy-duty transportation, which has greatly improved the modernization level of communication and signal equipment, and new technologies continue to emerge. Based on software cycle synchronization or hardware clock synchronization, safety computers with "two out of three" or "two out of two" redundant structure have been widely used in the field of railway signal control due to their high security and high reliability. application. figure 1 It is a classic architecture of railway signal control system. The safety computer works at the interlock...

AI Technical Summary

Problems solved by technology

Although my country's railways have made great progress, they are facing the dilemma of lacking core technologies, especially core technologies for safety platforms.

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