Correction method and device for gas alarm signal lag caused by oil pollution plugging
A gas alarm and oil pollution technology, which is applied in the field of data correction, can solve problems such as alarm signal lag and gas alarm signal lag, and achieve the effects of avoiding false alarms, solving alarm signal lag, and saving costs
Active Publication Date: 2021-08-31
CHENGDU QIANJIA TECH CO LTD
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Problems solved by technology
[0004] The purpose of the present invention is to improve the deficiencies in the prior art, to provide a method and device for correcting the signal lag of the gas alarm caused by oil pollution blocking the hole, and to solve the problem of the alarm signal lagging caused by the oil pollution blocking the gas alarm
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Embodiment 1
[0043] The present invention is realized through the following technical solutions, as figure 1 As shown, a method for correcting the signal lag of the gas alarm caused by oil pollution plugging includes the following steps:
[0044] Step S1: Establish the difference model F(x) of the concentration value detected by the gas alarm under different clogging degrees of the breathing orifice of the gas alarm.
[0045] When the clogging degree of the breathing orifice of the gas alarm is different, the same volume fraction of natural gas is released to the sensor of the gas alarm, and the operating data of the sensor is different, that is, the concentration of natural gas detected by the sensor is not the same. In other words, if the clogging degree of the breathing orifice of the gas alarm is low, the concentration value detected by the same volume fraction of natural gas released to the sensor is higher than that detected when the degree of breathing orifice is high.
[0046] Suc...
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The invention relates to a correction method and device for gas alarm signal lag caused by oil pollution plugging. Firstly, the difference model F(x) of different clogging degrees of breathing orifice and different volume fractions of natural gas is established, and then the actual gas sensor in use is used. The degree of clogging of the breathing orifice is input into the difference model F(x), and the concentration value of the gas sensor when the breathing orifice of the gas sensor is not blocked can be obtained from the difference model F(x) in the case of natural gas leaking the volume fraction. The value is the actual gas leakage concentration value corrected by the gas sensor. If the actual leakage concentration value exceeds the set threshold, an alarm will be issued. When the breathing orifice of the gas alarm is blocked, the concentration value detected by the sensor is corrected through this solution, so as to avoid false alarms or the phenomenon of reporting or not reporting due to detection errors, and there is no need to partially block the breathing orifice. Just repair or replace it, save cost, and also solve the problem of alarm signal lag.
Description
technical field [0001] The invention relates to the technical field of data correction, in particular to a method and device for correcting a signal lag of a gas alarm caused by oil pollution blocking holes. Background technique [0002] When natural gas leaks, the natural gas passes through the breathing hole of the natural gas alarm to reach the gas sensor part through natural diffusion. However, due to the long-term cooking activities in the kitchen, a large amount of oily fumes will be produced, and some oily fumes will adhere to the gas alarm to form oily dirt and block the breathing holes, causing the alarm signal to lag. In severe cases, the oily smoke will diffuse into the gas alarm and adhere to the gas sensor components, preventing the alarm signal from occurring, causing the gas alarm to be in a fault state, and the phenomenon of "reporting but not reporting" occurs. [0003] Oil plugging is a long-term accumulation process. When the breathing hole is slightly bl...
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IPC IPC(8): G01N33/22G08B29/18G08B21/16
CPCG01N33/0063G01N33/225G08B21/16G08B29/185
Inventor 牛富增赵勇胡芸华沈良伟张彬
Owner CHENGDU QIANJIA TECH CO LTD