Urban gas pipeline wireless monitoring system and monitoring method based on TDLAS (tunable diode laser absorption spectroscopy) sensors

Abstract

The invention discloses an urban gas pipeline wireless monitoring system and monitoring method based on TDLAS (tunable diode laser absorption spectroscopy) sensors. The monitoring system comprises multiple detection devices, an alarming module, a power supply module and a background monitoring center, wherein the multiple detection devices are installed in a gas pipeline at intervals; each detection device comprises a temperature sensor, a TDLAS sensor, a control module and a wireless communication module; the temperature sensor transmits the collected temperature value of the current detection node in the gas pipeline to the control module, and the TDLAS sensor transmits the collected gas concentration value to the control module; and the control module judges whether the concentration value of gas is in a safe range or not, if not, the control module controls the alarming module to give an alarm, and the collected data and judgment results are uploaded to the background monitoring center through the wireless communication module. Through the invention, urban gas pipeline systems can be monitored and managed in time, so that gas leakage is prevented and life safety is guaranteed.

Description

technical field [0001] The invention relates to the field of gas pipeline operation safety, in particular to a TDLAS sensor-based wireless monitoring system and monitoring method for urban gas pipelines. Background technique [0002] At present, the detection of gas leakage at home and abroad is mainly based on electrochemical or catalytic combustion point-type instruments. Their use has a history of more than several decades. The technical advantages are more prominent, and the urban gas pipeline wireless monitoring system based on TDLAS will provide a higher security guarantee for the safety of the gas pipeline. [0003] The cost of manual inspection is very high, and the inspection cycle is very long. It takes more than one week to inspect all the pipeline wells once, which means that the inspection cycle is at least one week. If discovered in time, hidden dangers can easily develop into explosion accidents, resulting in loss of life and property. Although gas companies...

AI Technical Summary

Problems solved by technology

Since most urban gas pipelines are buried pipelines, it is difficult to detect gas leakage in time, leaving hidden dangers of disasters and accidents

At present, there is no technical solution that can effectively detect or monitor the leakage of the gas pipeline network, so as to realize the real-time monitoring of the health status of the pipeline network

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