Subway station fire detection and fire power prediction method based on parallel temperature measurement

Abstract

The invention discloses a subway station fire detection and fire power prediction method based on parallel temperature measurement, which is carried out in the following mode of: (1) parallelly arranging two linear temperature-sensitive optical fiber detection systems along the length direction of a platform, and setting a threshold value; (2) sending a signal that a fire breaks out possibly when the temperature detected by one system exceeds the threshold value, and sending a signal confirming that a fire breaks out when the temperature detected by the other system also exceeds the threshold value; (3) determining a point whose temperature detected by the two temperature-sensitive optical fiber detection systems is abnormal as the position where the fire breaks out, and inputting temperature signals into a processor; and (4) predicating the fire power. The subway station fire detection and fire power prediction method measures the flue gas temperature under a suspended ceiling through temperature-sensitive optical fibers so as to predicate the size of the fire power, thereby solving the error in fire power predication brought about by different fire breaking out positions in the width direction of the platform, selecting an appropriate smoke discharge scheme, and ensuring safe evacuation of people in a subway station.

Description

technical field [0001] The invention belongs to the technical field of fire detection in the discipline of safety engineering, and in particular relates to a method capable of detecting the location of the fire and predicting the fire power of the subway station when a fire occurs in a subway station. Background technique [0002] As a fast, efficient, and large-capacity public transportation system, the subway can greatly alleviate urban traffic congestion and improve the travel environment of urban residents. It has been put into use in many large and medium-sized cities in China. However, due to the dense population of subway stations, and most of the subway platforms are located underground, the space is relatively airtight and difficult to evacuate. Once a fire breaks out in a subway station, the high-temperature and toxic smoke generated by the fire will accumulate in large quantities in the platform and spread rapidly. If a suitable smoke exhaust plan cannot be select...

AI Technical Summary

Problems solved by technology

However, the actual fire may occur at any position in the width direction of the platform. At this time, the temperature measured by the optical fiber can only determine whether a fire has occurred, and cannot reflect the power of the fire.

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