http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103245840-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01R27-26 |
| filingDate | 2013-05-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2015-09-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2015-09-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-103245840-B |
| titleOfInvention | A kind of multiplexed port interface circuit for capacitance type sensor |
| abstract | The invention discloses a kind of multiplexed port interface circuit for capacitance type sensor, Vn ds+ , Vn ds- the fixed port of corresponding capacitance type sensor respectively, Vn ma the movable port of corresponding capacitance type sensor: Vn ds+ , Vn ds- be connected with two input ends of Full differential operational amplifier A1 respectively, Vn ds+ , Vn ds- two the negative terminal inputs also inputting Single-end output operational amplifier A 3 respectively by electric capacity and three ends are connected, Vn ds+ and Vn ds- respectively by other electric capacity and node Vn s be connected, the anode of A3 exports by a switch and node Vn s be connected; Full differential operational amplifier A1 output terminal is connected with Full differential operational amplifier A2 input end respectively by electric capacity.The present invention can apply electrostatic force at same port and carry out capacitance detecting, realizes multiplexed port, adopts fully differential mode to realize the size that can not reduce electrostatic force, can effectively suppress power supply and common-mode noise. |
| priorityDate | 2013-05-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 12.