Redundant distributed optical fiber line-type temperature sensing fire detection method and system

Abstract

The invention discloses a redundant distributed fiber optic line-type temperature-sensing fire detection system, which comprises a plurality of distributed fiber-optic line-type temperature-sensing fire detector host units and temperature-sensing optical fiber units with redundant functions. The invention also discloses a redundant distributed optical fiber line-type temperature-sensing fire detection method. The redundant distributed optical fiber line-type temperature-sensing fire detection method and system of the present invention do not need to add any hardware in the redundant design schemes of underground utility tunnels, urban rail transit tunnels, highway tunnels and other important application places. The investment cost and external technical means can realize the redundancy function of the system, and can effectively solve the problem of breakpoints in the optical fiber. It can also continue to detect the ambient temperature at both ends of the breakpoint and the spread speed of the fire, and when a certain detection host fails, The detector hosts connected to its neighbors will start redundant detection, which effectively improves the reliability of the distributed optical fiber line type temperature-sensing fire detection system, saves investment costs and improves efficiency.

Description

technical field [0001] The invention relates to the technical field of fire monitoring and detection, in particular to a redundant distributed optical fiber line-type temperature-sensitive fire detection method and system. Background technique [0002] With the country's large investment in the construction of underground comprehensive pipe corridors, urban rail transit tunnels and highway tunnels, in order to improve the safety requirements for fire detection, distributed optical fiber line-type temperature-sensitive fire detectors are used for tunnel space and high and low voltage cables. The line temperature monitoring pre-alarm, and proposed that the system equipment needs redundant design, so the technicians studied a variety of solutions. [0003] At present, there are three main redundancy methods for the distributed optical fiber line-type temperature-sensitive fire detection system: 1. Redundancy is achieved by manual control of cold or hot standby hosts; Redunda...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a redundant distributed optical fiber line-type temperature-sensitive fire detection system a

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