http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111272663-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N2021-1704 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N21-25 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N21-1702 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-17 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-25 |
| filingDate | 2020-02-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-02-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-02-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-111272663-B |
| titleOfInvention | Gas detection device and method |
| abstract | The invention discloses a gas detection device and a method, the device comprises a light source module, a bar-like light beam shaping module, a photoacoustic signal detection module and a data processing module, wherein the bar-like light beam shaping module shapes an excitation light source into an excitation light beam with a bar-like light spot characteristic, the photoacoustic signal detection module comprises a tuning fork type quartz crystal oscillator and an oval acoustic resonant cavity, the excitation light beam with the bar-like light spot characteristic is incident to the photoacoustic signal detection device and acts with a gas to be detected to generate a photoacoustic signal, the photoacoustic signal is resonated and enhanced in the oval acoustic resonant cavity and then pushes an oscillating arm of the tuning fork type quartz crystal oscillator to vibrate to generate an electric signal, and the gas concentration can be inverted by detecting the electric signal; the invention adopts the strip-like beam shaping module to solve the problems of difficult shaping of the traditional round facula beam and low utilization rate of sound sensing area of the tuning fork vibrating arm caused by mismatching with the geometrical structure of the tuning fork quartz crystal oscillator; the elliptical acoustic resonant cavity further improves the acoustic coupling efficiency and the detection sensitivity. |
| priorityDate | 2020-02-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
| Predicate | Subject |
|---|---|
| isDiscussedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID457707758 http://rdf.ncbi.nlm.nih.gov/pubchem/compound/CID24261 |
Total number of triples: 15.