Opening and disconnection checking circuit of power supply terminal of switch controller

摘要

This research is about the disconnection and connection circuit of the switch controller.In this study, the control signal of the existing control unit is controlled by program, only the hardware is combined, and the output signal has problems,In addition, according to the control signal of the control unit, it is necessary to perform the receiving process in sequence for the power terminal signal of other lines and the power short message of its own line. Therefore, it is necessary to take the connection status of each line into account and output a signal - crowards signal. Crowards information output unit (21a) and,According to the output of crowards information output unit (21a) and the power terminal signal of other circuits and the power short signal of magnetic circuit, the disconnection on a, B and C and the signal on a, B and C of the judgment result and the result judgment unit (21b-21d) andAccording to the output of a, B and C upper disconnection and settlement judgment unit (21b-21d), the control unit (22) with judgment of disconnection and disconnection can only take the judgment of power disconnection and fault of multi-circuit switch control roller as pure hardware,In other words, it can continuously judge the disconnection and determine the information.