Пристрій для контролю ресурсу комутаційних апаратів

Abstract

The proposed device for testing the service life of a group of switching units contains a current transducer, comparators, a commutation detector, AND logic elements, pulse counters, a pulse generator, a signal former, a reset circuit, an OR logic element, a monostable multivibrator, a functional converter, a digital switching unit, a differentiator, a NOT logic element, and a digital comparator. The output of the current transducer is connected to the inputs of the of the first, second, and third comparators. The output of the commutation detector is connected to the first input of the fourth AND logic element. The first input of the first pulse counter is connected to the output of the third AND logic element. The first input of the third AND logic element is connected to the output of the pulse generator. The second input of the third AND logic element and the input of the signal former are connected to the output of the fourth AND logic element. The output of the reset circuit is connected to the first input of the OR logic element. The input of the digital comparator is connected to the output of the digital switching unit. The first input of the digital switching unit is connected to the output of the functional converter. The second input of the digital switching unit and the input of the functional converter are connected to the output of the first pulse counter. The output of the commutation detector is connected to the input of the differentiator. The output of the differentiator is connected to the input of the forth pulse counter. The output of the NOT logic element is connected to the input of the monostable multivibrator. The output of the monostable multivibrator is connected to the control input of the digital switching unit.