Method for reducing gas micro-leakage false alarm, intelligent gas meter and system

Abstract

The invention discloses a method for reducing gas micro-leakage false alarm, an intelligent gas meter and a system, and the method comprises the following steps: collecting rotation data of a countingwheel in real time, and converting the rotation data into at least one pulse signal; acquiring a time interval Ti between the ith pulse signal and the (i-1) th pulse signal, i being larger than or equal to 1; obtaining a single pulse signal belonging to a time interval Ti within a preset micro-flow leakage range, and accumulating all continuous pulse signals belonging to the preset micro-flow leakage range to obtain an abnormal pulse signal accumulation number Ni; and judging whether the abnormal pulse signal cumulative number Ni is greater than a micro-flow leakage abnormal pulse signal cumulative threshold M or not. The intelligent gas meter comprises a counting wheel, a pulse signal module, a controller module, a valve control module and a communication module. The intelligent gas system comprises the intelligent gas meter and a remote background. According to the invention, the purposes of low false alarm rate and high safety performance can be achieved.

Description

Technical field[0001]The invention relates to the technical field of gas leakage monitoring, in particular to a method for reducing false alarms of gas micro-leakage, an intelligent gas meter and a system.Background technique[0002]At present, smart gas meters based on mobile Internet of Things have been gradually installed to actual users. Smart gas meters can use remote data transmission and control technology to enable users to query and pay online, and gas company managers can perform in the background management system. The functions of remote valve closing protection, gas consumption monitoring, gas volume data analysis and abnormal situation warning lights are conducive to promoting the intelligent management of enterprises and improving their management efficiency.[0003]In an environment with high oil fume and high humidity like a kitchen, the risk of gas leakage due to aging of the hose, loose gaskets, and corrosion of the steel pipe is very easy to occur. In addition, rat c...

AI Technical Summary

Problems solved by technology

[0005] (1) When the cumulative pulse signal threshold setting reaches the design accuracy, due to the user's complex gas consumption behavior, such as repeated short-term ignition gas consumption behavior, it is extremely easy to generate false alarms, resulting in abnormal gas cut-off of the smart gas meter, affecting users gas experience;

[0006] (2) In order to reduce false alarms, under the premise that the volume of leaked gas is not guaranteed, the cumulative pulse signal threshold is increased. When an indoor micro-leakage accident occurs, the concentration of leaked gas in the kitchen will increase greatly. At this time, there will be serious safety hazard

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