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A method, system and device for identifying micro-flow leakage of an intelligent gas meter

An identification method and gas meter technology, which is applied in the direction of testing/calibrating volume flow, liquid/fluid solid measurement, instruments, etc., can solve problems such as prolonged reaction time, increased gas concentration, and increased safety risks, so as to reduce the probability of false alarms, The effect of improving reliability

Active Publication Date: 2022-03-25
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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  • A method, system and device for identifying micro-flow leakage of an 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 present invention provides a method, system and equipment for identifying micro-flow leakage of a smart gas meter. The identification method determines that the first abnormal pulse signal i is an abnormal pulse by judging and obtaining the first abnormal pulse signal i's first abnormal pulse time △T i , and then by obtaining the second abnormal pulse signal j determined to be an abnormal pulse and the second abnormal pulse time ΔT of the second abnormal pulse signal j j , the first abnormal pulse signal i is an abnormal pulse before the second abnormal pulse signal j; then by judging the second abnormal pulse time ΔT j Whether it is less than or equal to the first abnormal pulse time ΔTi+Δt can accurately determine whether the second abnormal pulse signal j is a leakage pulse, and can effectively avoid false alarms.

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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Patent Type & Authority Patents(China)
IPC IPC(8): G08B29/18G01F25/10
CPCG08B29/185G01F25/15
Inventor 许俊城王炜
Owner GUANGZHOU GAS
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