http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2022210313-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_2dd8af92d1513542b75c9d83ef33dca7 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01R19-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01R15-24 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01R15-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01R19-00 |
| filingDate | 2022-03-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a347782a4db6c93431760cba8c75ed12 |
| publicationDate | 2022-10-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | WO-2022210313-A1 |
| titleOfInvention | Current measurement device |
| abstract | [Problem] To provide a current measurement device that makes it possible to achieve high-frequency current measurement and to perform current measurement for devices that operate at higher switching frequencies, without using a division means. [Solution] According to the present invention, a current measurement device includes an optical fiber for a sensor, a light source, two variable optical attenuators, and a signal processing circuit that comprises two photoelectric conversion elements. The signal processing circuit comprises the two photoelectric conversion elements and a current/voltage conversion circuit. The two photoelectric conversion elements are connected in series. An optical signal is inputted into the variable optical attenuators then into the two photoelectric conversion elements and converted to a first photocurrent and a second photocurrent. The photocurrents are fed back to the variable optical attenuators, the amount of light that is inputted into the two photoelectric conversion elements is adjusted, and the DC components of the photocurrents are equalized. At the same time, the difference in the photocurrents is inputted into the current/voltage conversion circuit, the DC components of the photocurrents are offset, the AC components are outputted as a difference, and a current to be measured that is flowing in a conductor is converted to an electrical signal and measured. |
| priorityDate | 2021-03-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 17.