CONTROL CIRCUIT FOR DETECTING TRIGGER PULSE IN RAILWAY SWITCHING ELEMENT RELAY

摘要

The invention of the railway signal relay for that, by detecting the fault of the switching elements is generated from the output circuit works with a microcomputer for controlling a railway signaling relay the DC type in real-time secure the system operation on the railway signaling relay control circuit It relates to the switching element control circuit diagnosis.; The present invention is a signal that performs a switching operation according to a parallel input-output unit, and a trigger signal combination unit for combining the trigger to the digital signal, a digital signal is the trigger signal synthesized for outputting the control data input from the microcomputer to a digital signal It is the relay operation unit, and a switching element control circuit diagnosis of the railway signaling relay which detects whether or not a periodical trigger in real-time on a control signal including the trigger consists of a trigger signal detector for outputting a defect signal to provide.; The present invention using a digital signal obtained through the computer, and to safely operate the system to detect defects in real time generated from the switching elements of a railway signal relay control circuit, according to the software operation for detecting a defect signal It has the effect of minimizing the waste of system resources.