Gas sensor, gas detector, and self-testing and self-correcting method therefor
Patent Information
- Authority / Receiving Office
- CN Β· China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ASENSOR TECH
- Publication Date
- 2006-11-22
- Estimated Expiration
- Not applicable Β· inactive patent
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Abstract
Description
technical field
[0001] The present invention relates to gas sensing and detection devices, more specifically, to a fuel cell gas sensor with long life and more reliable performance, a gas detector made of this fuel cell gas sensor, and a corresponding peripheral circuit (ie, software and hardware) a method for self-testing and self-calibration of the fuel cell gas detector. Background technique
[0002] The fuel cell was invented by the British William Grove in 1839 and has been widely used in gas sensors in recent decades. Generally, a fuel cell gas sensor mainly includes a working electrode (usually called an anode) and a counter electrode (usually called a cathode), and the working electrode and the counter electrode are separated by an electrolyte. Electrochemical oxidation of the "fuel" gas at the working electrode results in the flow of electrons from the anode to the cathode, ie the formation of an electrical current. Among them, the current intensity is directly pr...