Method for extracting property of gas sensor output, and device and method for measuring gas density using it

A gas concentration measurement and gas sensor technology, which is used in measurement devices, special data processing applications, instruments, etc., and can solve the problems of different gas sensor characteristics, unstable output results, and failure to clearly explain the output characteristics.
CN101236167AInactive Publication Date: 2008-08-06SCIENTEC LAB CENT
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SCIENTEC LAB CENT
Publication Date
2008-08-06
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to an extracting method for gas sensor output characteristic and a gas concentration measuring device using the extracting method and a method thereof, comprising: process of respectively measuring output voltages of two ends of load resistor corresponding to internal resistance of each gas sensor and each gas concentration, selecting a maximal voltage regulation from calculated output voltage regulation changing along time, in order to extract gas sensor output characteristic data; process of obtaining a characteristic relation formula among the gas concentration, the internal resistance of gas sensor and the maximal voltage regulation via using obtained gas sensor output characteristic data; process of using characteristic relation formula of the maximal voltage regulation to measure gas concentration. The output characteristic of the gas sensor according to the invention is relative to the gas concentration and internal resistance of the gas sensor, thus, the invention can be used for function evaluation for gas concentration measuring device and gas sensor.
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Description

technical field

[0001] The invention relates to a method for extracting the output characteristics of a gas sensor that accurately extracts the output characteristics of a gas sensor by measuring the maximum voltage change rate, and calculating the output voltage change rate of the gas sensor, from which the maximum voltage change rate is found and calculated. Gas concentration, a gas concentration measuring device and a method for displaying the calculation result thereof. Background technique

[0002] With the continuous improvement of industrialization and urbanization in modern society, the sources of environmental pollution are also expanding. Faced with this situation, people continue to deepen their research on environmental technology and increase their investment in the environmental industry market. In order to detect and prevent harmful gases from environmental pollution sources in time, people have continuously improved the functions of semiconductor gas sensors...

Claims

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