Combustible gas monitoring data abnormal cause judgment method and device

A technology for abnormal data and gas monitoring, applied in the field of detection, can solve problems such as unchecked data, achieve monitoring effects and improve the accuracy of early warning, and eliminate inaccurate monitoring data

Inactive Publication Date: 2018-11-13
HEFEI ZEZHONG CITY INTELLIGENT TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical problem to be solved by the present invention lies in whether the data with abnormal values ​​in the monitoring data has not been checked

Method used

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  • Combustible gas monitoring data abnormal cause judgment method and device

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Embodiment 1

[0056] The method for judging the abnormal cause of combustible gas monitoring data in the present invention includes:

[0057] Step S1, the detection cycle starts;

[0058] Step S2, starting the sensor to continuously measure a set of data;

[0059] Step S3, inspecting each set of data collected by the combustible gas detector;

[0060] Step S4, judge whether each set of data contains abnormal data, if it is detected that the set of data contains abnormal data, discard the set of data, and enter step S5, if there is no abnormal data in the set of data, it is confirmed as the periodic detection value, enter step S8;

[0061] Step S5, start supplementary detection, and enter step S6;

[0062] Step S6, judging whether the number of supplementary detections is within the set number of times N, if yes, return to step S2, start the sensor to detect a new group of arrays; if there is no qualified data within the number of times N, then enter step S7, where N is based on The actu...

Embodiment 2

[0096] The difference between this embodiment and the above-mentioned embodiment is that in the step S3, the Raida criterion is used to test the n data of continuous detection, and the Raida criterion is based on the standard deviation of three times the measurement series as the limit selection standard, which Given a confidence probability of 99.73%, this criterion is applicable to situations where the number of measurements n>10 or the standard error σ has been calculated through a large number of repeated measurements in advance. Xi is an equal-precision measurement value subject to a normal distribution, and their arithmetic mean X, residual vi and standard deviation σ can be obtained first. If |Xi-X|>3σ, the suspicious value Xi contains gross errors and should be discarded; if |Xi-X|≤3σ, the suspicious value Xi is a normal value and should be retained. After discarding the suspicious value, recalculate the average value and standard deviation of other measured values ​​e...

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Abstract

A combustible gas monitoring data abnormal cause judgment method includes: step S1, starting; step S2, starting a sensor to continuously obtain a group of data by detection; step S3, checking each group of data; step S4, judging whether each group of data includes abnormal data or not, if yes, discarding the data and starting the step S5, and if not, determining as a cycle detection value and starting the step S8; step S5, starting complementary detection, and starting step S6; step S6, judging whether complementary detection times is within set times or not, if yes, returning to the step S2,and if no qualified data is detected in set times, starting the step S7; step S7, feeding back equipment abnormal signals; step S8, outputting the cycle detection value. The invention further discloses a combustible gas detector data processing device. Monitoring data inaccuracy caused by inaccuracy of acquired data is eliminated, and monitoring effects and early warning accuracy are improved.

Description

technical field [0001] The invention relates to a detection method, and more particularly to a method and device for judging the cause of abnormalities in combustible gas monitoring data. Background technique [0002] In various online monitoring systems, the signals are collected by sensors and then analyzed, and the analysis results are given as monitoring results, and the system is monitored and warned according to the monitoring results. [0003] The current combustible gas monitoring equipment in the underground space collects data at intervals, for example, half an hour. The gas sensor will start the sensor for three consecutive detections in each monitoring cycle, and take the average value as the concentration data output of the cycle. In this way, there is a requirement for the accuracy of the collected data. During the detection process of the combustible gas monitor, similar signal mutations will also occur. If a jump value suddenly appears, it is likely that a ga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B29/18G08B21/16
CPCG08B21/16G08B29/185
Inventor 侯龙飞袁宏永苏国锋黄捷端木维可付明钱萍
Owner HEFEI ZEZHONG CITY INTELLIGENT TECH CO LTD
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