Detection system and detection method for output of gas sensor array based on single chip microcomputer

Abstract

The invention discloses a detection system for the output of a gas sensor array based on a single chip microcomputer. The detection system comprises the analog circuit part and the digital circuit part; wherein the analog circuit part comprises a power supply module, a standard resistor division module, a signal filtering module, a single-ended to differential module, and an analog-to-digital conversion module; the digital circuit part comprises a single-chip microcomputer, a communication module, and a display module. The invention further discloses a detection method for the output of the gas sensor array based on the single chip microcomputer. According to the detection system and the detection method for the output of the gas sensor array based on the single chip microcomputer, the output of the sensor array can be detected online; the detection resolution is improved; and the detection result is displayed in real-time.

Description

technical field [0001] The disclosure belongs to the field of gas sensor output signal detection, in particular to a single-chip microcomputer-based gas sensor array output detection system and detection method. Background technique [0002] In the power industry, GIS is widely used due to its small footprint and high reliability. Due to its closed structure, early failures of GIS are difficult to find. At present, gas sensors with excellent performance are generally used to detect SF in GIS equipment. 6 Gas decomposition products such as H 2 S, SO 2 Carry out fault diagnosis and status assessment on equipment. Accurately measuring the output of the gas sensor is essential for correct judgment of SF 6 The composition of gas decomposition products is critical. The electrical signal output by the gas sensor is very weak, and the commercial electrical signal measurement system is expensive and bulky, and needs to be connected to a host computer to determine the gas compos...

AI Technical Summary

Problems solved by technology

The electrical signal output by the gas sensor is very weak, and the commercial electrical signal measurement system is expensive and bulky, and needs to be connected to a host computer to determine the gas composition, which is not suitable for on-line monitoring systems

Ordinary resistance measurement devices have the disadvantages of low precision and large noise interference. The output of the sensor will be submerged in the noise, and the measurement error is large, which seriously affects the determination of gas components.

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