Railway Signal Distributed Computer Control Switch Module
Abstract: With the continuous
miniaturization, electrical, high-speed and intelligent of railway signal equipment,
the control switch module must have higher safety, reliability and
anti-interference ability. Under this background, this paper studied the
railway signal distributed computer control switch module. First of all, this
paper introduced the main supporting technology of distributed interlocking
system. These technologies mainly include solid state switch technology, fault
tree analysis (FTA) technology, security and reliability design technology and
so on. Then, this paper made clear the function requirement of the control
switch module according to the characteristics of distributed computer
interlocking system and the electrical characteristics of the circuit switch of
the machine interface. Moreover, this paper made clear thedesign method of hardware
circuit and software. In the aspect of hardware, this paper mainly analyzed the
working principle of the switch control circuit, express acquisition circuit
and the communication circuit. In the aspect of software design, this paper
focused on the principle and work flow of the micro control unit (MCU)
initialization, circuit control and the representation of information detection
and so on. Finally, this paper used the fault tree analysis method to carry on
the depth analysis of the security of the module. And the analysis results show
that the railway signal distributed computer control switch module has a high reliability
degree, safety degree and fault-Safety degree. At the same time, the module
also meets the system's security index.
Author: Hualin Chen, Lan Chen
Journal Code: jptkomputergg160086
