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A Study on the Malfunction Prevention for Transponder of Record Type Fire Alarm System

R형 자탐설비의 중계기 오동작 방지 대책에 대한 연구

  • Received : 2014.09.12
  • Accepted : 2014.10.21
  • Published : 2014.10.31

Abstract

The record type receivers that are operated in large industrial sites have strength in preventing fire. However, because of its long circuit lines and multiple detectors, the receivers are vulnerable to lightning, noise, and breakdown of equipments, resulting in malfunction. In case of malfunctioning of detection circuits of main protection areas, such as electrical room and server room, potential release of gaseous extinguisher agents may lead to property and life damage. In this paper, we present the results on the characteristics of the transponder that initiates the solenoid valves, with respect to various electromagnetic and lightning inflow conditions. Based on the measured data, we analyzed the systematic problems of the transponder. In order to prevent receiver malfunctions, a sequential circuit was configured with two additional transponders and a timer. The circuit was tested with a simulator with preference and delay circuit algorithms.

Keywords

the record type receivers;transponder;lightning;surge;malfunction

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