Gas detecting system, device and method
AssigneeIndustrial Technology Research Institute
InventorsChun-Te CHUANG, Chun-Hsun Chu, I-Cherng Chen, Nai-Hao Kuo
Life of this patent
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Abstract
A gas detecting system, device and method use a variable pulse voltage waveform to increase the temperature of a detecting unit of the gas detecting system so it reacts with gas molecules from a particular space, and outputs a sensing signal. A processing unit of the gas detecting system then performs calculations on the sensing signal, such that an analysis unit may determine the presence of a target gas in the particular space, and further the composition and concentration of the target gas within the particular space, thus providing a detection that is accurate, rapid and convenient.
Claims23
A gas detecting system, comprising:
- a database for storing at least one characteristic signal of at least one target gas;
- a voltage unit for outputting a variable pulse voltage waveform corresponding to the at least one target gas;
- a detecting unit for increasing its own temperature based on the variable pulse voltage waveform outputted by the voltage unit to react with gas molecules from a particular space, and to output a sensing signal corresponding to the gas molecules;
- a processing unit for performing a dimensionless or normalization calculation on the sensing signal outputted by the detecting unit according to a reaction temperature of the at least one target gas and outputting a relative signal;
- and
- an analysis unit for comparing a portion of the relative signal outputted by the processing unit with the at least one characteristic signal in the database to output an analysis result.
A gas detecting device, comprising:
- a particular-space sampling system for retrieving gas molecules from a particular space;
- a gas detecting system for detecting the gas molecules retrieved by the particular-space sampling system, including:
- a database for storing at least one characteristic signal of at least one target gas;
- a voltage unit for outputting a variable pulse voltage waveform corresponding to the at least one target gas;
- a detecting unit for increasing its own temperature based on the variable pulse voltage waveform outputted by the voltage unit to react with the gas molecules retrieved by the particular-space sampling system, and to output a sensing signal corresponding to the gas molecules;
- a processing unit for performing a dimensionless or normalization calculation on the sensing signal outputted by the detecting unit according to a reaction temperature of the at least one target gas and outputting a relative signal;
- and
- an analysis unit for comparing a portion of the relative signal outputted by the processing unit with the at least one characteristic signal in the database to output an analysis result;
- and
- a warning device for receiving the analysis result outputted by the analysis unit and accordingly sending out a warning message.
A gas detecting method, comprising steps of:
- outputting a variable pulse voltage waveform corresponding to a target gas to a detecting unit;
- carrying out a temperature increasing procedure, by the detecting unit, upon receiving the variable pulse voltage waveform;
- reacting with gas molecules from a particular space, by the detecting unit while carrying out the temperature increasing procedure, to output a sensing signal corresponding to the gas molecules;
- performing a dimensionless or normalization calculation on the sensing signal according to a reaction temperature of the target gas and outputting a relative signal;
- and
- comparing a portion of the relative signal with a characteristic signal of the target gas in the database to output an analysis result.
A gas detecting device, comprising:
- a housing with an opening;
- a particular-space sampling system connected to the opening of the housing;
- and
- a gas detecting system provided within the housing for detecting a gas and outputting an analysis result;
- and
- a warning device provided within the housing for receiving the analysis result and sending out a warning message when the analysis result is larger than a predetermined value,
- wherein the gas detecting device conveys the gas to be detected to the housing via the particular-space sampling system.
Dependencies are inferred from the claim text.