Dynamic test platform and test method for gas sensor

Abstract

The invention belongs to the technical field of gas sensors. The invention provides a dynamic test platform and test method for a gas sensor. High-precision testing environments with different types of gases, different flow rates and different gas concentrations can be provided through the dynamic gas distribution system, and are closer to the actual application conditions of sulfur hexafluoride and decomposition product gases thereof, so that the accuracy of gas-sensitive testing is improved. According to adsorption and desorption of gas molecules on the gas-sensitive sensor, gas signals are collected in the gas-sensitive response chamber, and rapid replacement and balance of atmosphere concentration in the chamber in the testing process are guaranteed. The collecting device can be used for collecting waste gas. And the electrical detection system and the data analysis system are respectively used for realizing conversion of gas signals and receiving and processing of electrical signals. The dynamic test platform of the gas sensor is simple in structure, complete in function, convenient to operate and high in detection accuracy. According to the test method of the gas sensor, rapid gas-sensitive detection and comprehensive evaluation of the gas-sensitive sensing performance can be realized.

Description

technical field [0001] The application belongs to the technical field of gas sensors, and in particular relates to a dynamic test platform and a test method of gas sensors. Background technique [0002] With the development of science and technology, the importance of detection of sulfur hexafluoride and its decomposition products in the state diagnosis of sulfur hexafluoride electrical equipment has become more and more prominent, so the real-time detection of these gases has become particularly important. Commonly used spectro-mass spectrometry has disadvantages such as high price and complex equipment, and is only suitable for laboratory research, and its application in field detection is limited. [0003] A gas sensor can be defined as a converter that uses physical and chemical effects to convert gas volume fractions into electrical signals. Technically speaking, all gas sensors are indirect means of identifying and measuring gases by sensor-type devices by detecting c...

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Problems solved by technology

[0004] However, in order to ensure the functionality of the equipment, the common gas sensitivity test system makes the test system bulky and complicated to operate.

Moreover, considering the special environment of the power industry, especially for the detection of sulfur hexafluoride and its decomposition products, it is necessary to integrate complex environmental conditions in the experimental research, such as the control of light irradiation, temperature, atmosphere, etc. Due to the technical difficulties of the combination of Internet of Things technology, the common gas sensing test system can no longer meet the needs of higher efficiency, accuracy and economy in the gas detection and defect diagnosis process in the power industry

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