Large-depth space temperature field detecting and fire disaster alarming device

Abstract

A large-depth space temperature field detection and fire warning device, including a laser controller, a fixed-wavelength laser, a wavelength-selective one-way pass module, a multi-channel optical switch, multiple transmission temperature-sensing optical cables, a photoelectric converter, and a signal processing module, Wherein, the wavelength-selective one-way pass module receives the input laser light of the fixed-wavelength laser and outputs it to the multi-channel optical switch, and accepts the input backscattered optical signal of the multi-channel optical switch and transmits the backscattered light signal The scattered light signal is output to the photoelectric converter; the photoelectric converter outputs the converted electrical signal to the signal processing module; the signal processing module judges whether the preset temperature is reached according to the calculated space temperature Alarm threshold and temperature rise rate alarm threshold. The invention provides a technical solution, which can measure the temperature of a large deep space, has the advantages of simple networking, and only needs to lay corresponding temperature-sensing optical cables according to needs, and has the advantages of low cost and high reliability.

Description

technical field [0001] The invention relates to the fields of temperature detection and fire warning, in particular to the detection and alarm technology of the space temperature field. Background technique [0002] With the development of human industrial society, temperature detection and fire early warning technology based on safety requirements are developing rapidly. Traditional temperature detection technologies such as alcohol thermometers, mercury thermometers, various industrial thermocouple temperature detectors, single-chip temperature sensors, etc. Very mature, but they are all point detection, that is, they can only detect one point in space. Even if the network structure consists of multiple detection points, such as the detection of the temperature field in highway tunnels, cable trenches, and temperature conditions along high-voltage cables in a large space, the number of detection points required will be very large, making networking very difficult , The re...

AI Technical Summary

Problems solved by technology

Even if the network structure consists of multiple detection points, such as the detection of the temperature field in highway tunnels, cable trenches, and temperature conditions along high-voltage cables in a large space, the number of detection points required will be very large, making networking very difficult , the reliability is poor, and the traditional temperature detection method will be helpless for the axial temperature of the high-voltage transmission cable that needs to be closely monitored

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