A Case Study On The Failure Of Anti-Short-Circuit Function Of Elevator Door

Abstract

The floor and car door circuits are very important parts of the elevator safety protection system, and once they are short-circuited, they will easily lead to shearing and falling accidents.. The newly manufactured elevator requires the addition of door loop detection function, designed to prevent normal operation of elevator from the door loop being short-circuited, however, many systems have defects in determining whether door loop is short-circuit, especially for the elevators which open the front door and the back door at the same time. By comparing the theory of single-door loop detection and double-door loop detection, this paper analyzes the existing problems of the door loop detection device and provides the corresponding rectification and suggestion.