http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110044847-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N21-4133 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N21-43 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N21-41 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-43 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-41 |
| filingDate | 2019-05-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-10-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-10-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-110044847-B |
| titleOfInvention | Total internal reflection type refractive index sensing method free from influence of light source drift |
| abstract | A total internal reflection type refractive index sensing method which is not influenced by light source drift. The invention provides a total internal reflection type refractive index measurement sensing method capable of completely eliminating the influence of light source drift for the first time, so that the requirement on the stability of a light source is reduced, and the measurement precision is improved. The method comprises the steps that before incident light enters a sensor, the incident light passes through a light intensity modulator and an 1/4 wave plate, a light intensity differential signal output by the sensor is measured, the angle of an optical axis of a 1/4 wave plate is accurately adjusted, so that an alternating current signal in the differential signal is minimized or disappeared, when the refractive index of a measured liquid changes, the alternating current signal of the differential signal is enlarged, and when the angle of the optical axis of a 1/4 wave plate is accurately adjusted, the alternating current signal in the differential signal is minimized or disappeared, the refractive index of a measured medium is determined according to the corresponding relation between the angle rotated by the 1/4 wave plate and the refractive index change. |
| priorityDate | 2019-05-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 17.