Gas sensing method and gas sensing system
AssigneeNational Yang Ming Chiao Tung University
InventorsJeng-Tzong SHEU, Hao-Hsuan HSU, Chih-Wei CHEN
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Abstract
A gas sensing method and a gas sensing system are provided. The gas sensing method includes using a gas sensing device to sense a target gas, the gas sensing device having a self-heating region capable of producing a change in resistance in response to the target gas being sensed by the gas sensing device, and controlling a change in supply of current or voltage to the gas sensing device according to the change in resistance, so that the gas sensing device is substantially maintained operating at a predetermined temperature for sensing the target gas.
Claims17
A gas sensing method, comprising:
- using a gas sensing device to sense a target gas, the gas sensing device comprising a self-heating region capable of producing a change in resistance in response to the target gas being sensed by the gas sensing device;
- and
- controlling a change in supply of current or voltage to the gas sensing device according to the change in resistance, so that the gas sensing device is substantially maintained operating at a predetermined temperature for sensing the target gas.
A gas sensing system, comprising:
- a gas sensing device comprising a self-heating region capable of producing a change in resistance in response to a target gas being sensed by the gas sensing device;
- and
- a control unit configured to control a change in supply of current or voltage to the gas sensing device according to the change in resistance, so that the gas sensing device is substantially maintained operating at a predetermined temperature for sensing the target gas.
Dependencies are inferred from the claim text.