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Method, system and equipment for identifying micro-flow leakage of intelligent gas meter

An identification method and technology for gas meters, applied in liquid/fluid solid measurement, measurement devices, instruments, etc., can solve problems such as prolonged response time, increased safety risk, and increased gas concentration

Active Publication Date: 2021-03-23
GUANGZHOU GAS +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, if there are too many pulses, when a gas leak occurs, the response time for alarming or shutting off the valve will be greatly prolonged, and the concentration of gas accumulated in the space will increase when the leak occurs, greatly increasing the safety risk.

Method used

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  • Method, system and equipment for identifying micro-flow leakage of intelligent gas meter
  • Method, system and equipment for identifying micro-flow leakage of intelligent gas meter
  • Method, system and equipment for identifying micro-flow leakage of intelligent gas meter

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Embodiment Construction

[0065] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0066] In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer " and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or i...

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Abstract

The embodiment of the invention provides an identification method, system and device for micro-flow leakage of an intelligent gas meter. The method comprises the steps: determining a first abnormal pulse signal i as an abnormal pulse through judgment, and obtaining the first abnormal pulse time [delta]Ti of the first abnormal pulse signal i; obtaining a second abnormal pulse signal j determined asan abnormal pulse and a second abnormal pulse time [delta]Tj of the second abnormal pulse signal j, wherein the first abnormal pulse signal i is an abnormal pulse before the second abnormal pulse signal j; and if yes, accurately judging whether the second abnormal pulse signal j is a leakage pulse by judging whether the second abnormal pulse time [delta]Tj is smaller than or equal to the first abnormal pulse time [delta]Ti+[delta]t, so that the situation of false alarm can be effectively avoided.

Description

technical field [0001] The invention relates to the technical field of smart gas meters, in particular to a method, system and equipment for identifying micro-flow leakage of smart gas meters. Background technique [0002] With the help of chips and modern communication technology, gas meter metering and charging based on pulse collection has realized remote meter reading, paid recharge, and step-by-step charging. Taking advantage of the difference in flow rate between gas leakage and normal use of residential gas, an Internet of Things smart gas meter with safety monitoring function has been developed. The principle of safety monitoring is to calculate the flow rate by collecting the time of metering pulses. And make a logical comparison with the normal gas flow rate, if the metering pulse flow rate is different from the normal gas flow range, it will be judged as an air leak, and the alarm will be issued or the valve closing command will be cut off to realize safety monito...

Claims

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Application Information

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IPC IPC(8): G08B29/18G01F25/00
CPCG08B29/185G01F25/15
Inventor 许俊城王炜
Owner GUANGZHOU GAS
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