Title:
NON-CONTACT SENSOR CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2017/215170
Kind Code:
A1
Abstract:
A non-contact sensor circuit, the circuit comprising a capacitor C2, a resistor R1, a resistor R2 and an operational amplifier A, wherein one end of the capacitor C2 is connected to an in-phase input end of the operational amplifier A, and the other end thereof is grounded; one end of the resistor R1 is connected to an anti-phase input end of the operational amplifier A, and the other end thereof is grounded; and one end of the resistor R2 is connected to the anti-phase input end of the operational amplifier A, and the other end thereof is connected to an output end of the operational amplifier A. The circuit has a simple structure, realizes near-direct-current signal detection under the condition of a non-contact coupling capacitor of a picofarad size, and has the characteristic of gains and bandwidths being adjustable.
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Inventors:
ZHANG LIMIN (CN)
TANG YUE (CN)
WU RONGRONG (CN)
YAN FENG (CN)
TANG YUE (CN)
WU RONGRONG (CN)
YAN FENG (CN)
Application Number:
PCT/CN2016/102682
Publication Date:
December 21, 2017
Filing Date:
October 20, 2016
Export Citation:
Assignee:
UNIV NANJING (CN)
International Classes:
G01R19/00; G01R1/20
Foreign References:
| CN1053684A | 1991-08-07 | |||
| CN101556306A | 2009-10-14 | |||
| CN102971636A | 2013-03-13 | |||
| CN101490564A | 2009-07-22 | |||
| CN105049070A | 2015-11-11 | |||
| US20030160602A1 | 2003-08-28 | |||
| US4914382A | 1990-04-03 | |||
| US4757263A | 1988-07-12 |
Attorney, Agent or Firm:
NANJING ZHISHI LAW FIRM OF INTELLECTUAL PROPERTY (CN)
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