CN-121977633-A - Intelligent metering test system of gas detection equipment

CN121977633ACN 121977633 ACN121977633 ACN 121977633ACN-121977633-A

Abstract

The embodiment of the invention discloses an intelligent metering test system of gas detection equipment, which comprises a computer, a hygrothermograph, a stopwatch, a gas distribution instrument, a flow controller, an appearance detection camera of the detected equipment, an indication detection camera of the detected equipment and a gas path connection state detection camera, wherein the computer is used for carrying out system self-detection according to images of the gas path connection state detection camera, data of the hygrothermograph and self-detection data of each equipment to obtain a self-detection result, carrying out inspection according to the images of the appearance detection camera of the detected equipment to obtain an appearance inspection result, and obtaining corresponding calibration mode parameters and measurement mode parameters for calibration and measurement according to user operation to obtain the calibration result and the test result.

Inventors

WANG ZUOCHENG
CHEN TAO
MA YULIN
CHEN YIPU
Niu Kuijian
XU RAN
ZHANG GUANGDI
ZHAO WENJIA
ZHANG JIPENG
WU JUNWEI
ZHEN YULONG
LIU WEI
LI XUE
ZHOU JINGYUN

Assignees

北京无线电计量测试研究所

Dates

Publication Date: 20260505
Application Date: 20251202

Claims (10)

1. The intelligent metering test system of the gas detection equipment is characterized by comprising a computer, a hygrothermograph, a stopwatch, a gas distribution instrument, a flow controller, an appearance detection camera of the tested equipment, an indication detection camera of the tested equipment and a gas circuit connection state detection camera; The computer is used for carrying out system self-inspection on the image of the detection camera, the data of the hygrothermograph and the self-inspection data of each device according to the air path connection state to obtain a self-inspection result, carrying out inspection on the image of the detection camera according to the appearance of the detected device to obtain an appearance inspection result, and carrying out calibration and measurement on the corresponding calibration mode parameter and measurement mode parameter to obtain a calibration result and a test result in response to user operation.
2. The intelligent metering test system of a gas detecting apparatus according to claim 1, wherein, The computer comprises a first data processing module, the first data processing module responds to a first operation of a user to obtain an image of the gas circuit connection state detection camera and judge whether the gas circuit connection is normal, data of the hygrothermograph is obtained to judge whether the temperature and the humidity meet requirements, self-checking data of each device are obtained to judge whether the working state is normal, and a self-checking result is output.
3. The intelligent metering test system of a gas detecting apparatus according to claim 1, wherein, The computer comprises a second data processing module, wherein the second data processing module responds to a second operation of a user to acquire an image of the appearance detection camera of the tested device, judges whether the appearance of the tested device has defects or not, and outputs an appearance inspection result.
4. The intelligent metering test system of a gas detecting apparatus according to claim 1, wherein, The computer comprises a third data processing module, the third data processing module responds to third operation of a user to obtain zero calibration mode parameters, controls output flow of an air outlet channel and output flow of a bypass channel of the flow controller, controls an air distribution instrument to output zero gas, obtains an image of a tested device indication value detection camera, judges whether the tested device indication value meets requirements, and outputs a zero calibration result.
5. The intelligent metering test system of a gas detecting apparatus according to claim 1, wherein, The computer comprises a fourth data processing module, the fourth data processing module responds to fourth operation of a user to obtain range calibration mode parameters, the gas distribution instrument is controlled to output standard gas, an image of the tested device indication value detection camera is obtained, whether the tested device indication value meets the requirement is judged, and a range calibration result is output.
6. The intelligent metering test system of a gas detecting apparatus according to claim 1, wherein, The computer comprises a fifth data processing module, wherein the fifth data processing module responds to a fifth operation of a user to obtain indication error measurement mode parameters, controls the gas distribution instrument to output standard gas with concentration corresponding to each measurement point, obtains an image of an indication detection camera of the tested equipment, judges whether the indication of the tested equipment meets the requirement, obtains the indication of the tested equipment, calculates indication error and outputs an indication error measurement result.
7. The intelligent metering test system of a gas detecting apparatus according to claim 1, wherein, The computer comprises a sixth data processing module, the sixth data processing module responds to sixth operation of a user to obtain repeatability measurement mode parameters, controls the gas distribution instrument to output standard gas, obtains an image of the tested equipment indication detection camera, judges whether the tested equipment indication meets the requirement, obtains the tested equipment indication, closes a gas distribution instrument gas outlet channel, repeatedly measures and calculates repeatability according to measurement times, and outputs repeatability measurement results.
8. The intelligent metering test system of a gas detecting apparatus according to claim 1, wherein, The computer comprises a seventh data processing module, wherein the seventh data processing module responds to seventh operation of a user to acquire response time measurement mode parameters, controls the gas distribution instrument to output zero gas to purge the gas path, acquires an image of the display value detection camera of the tested equipment, judges whether the display value of the tested equipment returns to zero, controls the gas distribution instrument to output standard gas and controls the stopwatch to start timing synchronously, records the reading of the stopwatch when the display value of the tested equipment is n times of the display value of the tested gas, repeatedly measures according to the measurement times, calculates an arithmetic average value as a measurement value of response time, and outputs a response time measurement result.
9. The intelligent metering test system of a gas detecting apparatus according to claim 1, wherein, The computer comprises an eighth data processing module, wherein the eighth data processing module responds to eighth operation of a user to acquire drift measurement mode parameters, controls the gas distribution instrument to output zero gas, acquires an image of the display value detection camera of the tested equipment, judges whether the display value of the tested equipment meets the requirement, reads the display value of the tested equipment, controls the gas distribution instrument to output standard gas, acquires the image of the display value detection camera of the tested equipment, judges whether the display value of the tested equipment meets the requirement, reads the display value of the tested equipment, repeatedly measures according to preset running time and measurement intervals, calculates zero drift and range drift, and outputs a drift measurement result.
10. The smart metering test system of a gas detection apparatus of claim 1 wherein the computer is configured to calculate measurement uncertainty and generate corresponding certification, calibration or test raw records and certificates.

Description

Intelligent metering test system of gas detection equipment Technical Field The present invention relates to the field of gas detection. And more particularly to an intelligent metering test system for a gas detection apparatus. Background Currently, the metering test requirements of gas detection equipment are very extensive and necessary. For example, flammable/toxic gas detectors, coal mine gas monitoring equipment, etc. used by petrochemical enterprises are required to be forcibly verified by law. For some common industrial and commercial gas detection devices, no forced verification is required, but periodic calibration is required to ensure accurate measurement. The development and production of gas detection equipment also requires a great deal of testing to verify product performance by referring to corresponding metering verification rules. The existing metering test method of the gas detection equipment generally comprises the steps that metering testers firstly ensure that the ambient temperature, the humidity and the like meet requirements according to metering verification rules of the corresponding gas detection equipment, then perform appearance inspection to confirm whether the environment temperature, the humidity and the like are normal, introduce zero point gas for zero point calibration, then introduce standard gas with specified concentration for range calibration, select measuring points with different concentrations according to the rules, respectively ventilate for measuring indication errors, introduce standard gas with specific concentration according to the rules, and perform repeatability, response time and drift measurement. The method for measuring and testing the gas detection equipment mainly has two main defects that firstly, the ventilation test in the measuring and testing process has a certain danger for operators for toxic and harmful gases such as hydrogen sulfide, carbon monoxide and the like and combustible gases such as methane, ethane and the like, and secondly, the method is often low in efficiency by simply relying on manual operation, and is possibly wrong due to subjective reasons such as lack of concentration and inexperienced operation, and the method is not suitable for measuring and testing of large-scale equipment in a short period. Disclosure of Invention The invention aims to provide an intelligent metering test system of gas detection equipment, which aims to solve at least one of the problems existing in the prior art. In order to achieve the above purpose, the invention adopts the following technical scheme: The first aspect of the invention provides an intelligent metering test system of gas detection equipment, which comprises a computer, a hygrothermograph, a stopwatch, a gas distribution instrument, a flow controller, an appearance detection camera of the tested equipment, an indication detection camera of the tested equipment and a gas circuit connection state detection camera; The computer is used for carrying out system self-inspection on the image of the detection camera, the data of the hygrothermograph and the self-inspection data of each device according to the air path connection state to obtain a self-inspection result, carrying out inspection on the image of the detection camera according to the appearance of the detected device to obtain an appearance inspection result, and carrying out calibration and measurement on the corresponding calibration mode parameter and measurement mode parameter to obtain a calibration result and a test result in response to user operation. Optionally, the computer includes a first data processing module, the first data processing module obtains an image of the gas circuit connection state detection camera in response to a first operation of a user, judges whether the gas circuit connection is normal, obtains data of the hygrothermograph to judge whether the temperature and the humidity meet requirements, obtains self-checking data of each device to judge whether the working state is normal, and outputs a self-checking result. Optionally, the computer includes a second data processing module, and the second data processing module acquires an image of the appearance detection camera of the tested device in response to a second operation of the user, determines whether the appearance of the tested device has a defect, and outputs an appearance inspection result. Optionally, the computer includes a third data processing module, the third data processing module responds to a third operation of a user to obtain a zero calibration mode parameter, controls output flow of an air outlet channel and output flow of a bypass channel of the flow controller, controls the air distribution instrument to output zero gas, obtains an image of a tested device indication value detection camera, judges whether the tested device indication value meets the requirement, and outputs a zero calibration result. Optionally, the computer