计算机联锁系统采集单元设计-《武汉职业技术学院学报》

文章信息/Info

Author(s):: YANG Cheng; Nanjing Metro Operation Co., Ltd., Communication Center, Nanjing 210012, China

Keywords:: interlocking machine; AVR single chip microcomputer; double hot-standby; CAN bus

摘要:: 计算机联锁系统作为铁路的重要设备，涉及到安全，需要高的可靠性和稳定性。为了延长计算机联锁系统的平均无故障时间（MTBF），设计一种采集单元，采用双机热备配置的AVR 单片机作为处理核心，用于采集和检测采集板卡，采集组匣和联锁机计算机层采用配线更为方便的CAN 总线连接，通信可靠，配线简单，所使用的AVR 单片机减轻了联锁机计算机层CPU的负担，整个系统也更加稳定可靠，具有一定的推广意义。

Abstract:: As an important railway equipment, computer interlocking system which involves the security, requires high reliability and stability. To extend the computer interlocking system mean time between failures （MTBF）, it designs a kind of acquisition unit which adopts AVR single chip microcomputer of double machine hot standby configuration as the processing core which is used for acquisition and testing acquisition boards. The acquisition group box and computer interlocking machine layer are more convenient for the CAN bus connection, reliable communication, simple wiring. The use of AVR single chip microcomputer reduces the burden of CPU in the interlocking machine computer layer, the whole system are more stable and reliable, and has certain significance of popularization.