- 专利标题: Capacitive sensing system with hardware diagnostics concept for detection of sensor interruption
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申请号: US15560915申请日: 2016-01-28
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公开(公告)号: US10132651B2公开(公告)日: 2018-11-20
- 发明人: Christian Urig , Christoph Wendt
- 申请人: IEE International Electronics & Engineering S.A.
- 申请人地址: LU Echternach
- 专利权人: IEE International Electronics & Engineering S.A.
- 当前专利权人: IEE International Electronics & Engineering S.A.
- 当前专利权人地址: LU Echternach
- 代理机构: Reising Ethington P.C.
- 优先权: LU92682 20150323
- 国际申请: PCT/EP2016/051754 WO 20160128
- 国际公布: WO2016/150594 WO 20160929
- 主分类号: G01R31/42
- IPC分类号: G01R31/42 ; G01D5/24 ; B60N2/00 ; G01D18/00
摘要:
A capacitance measurement circuit for determining a sense current of a capacitive sensor which includes at least one electrically conductive sense electrode and at least one electrically conductive guard electrode. The measurement circuit includes at least one switch member that is remotely controllable by a switch remote control unit, wherein the at least one switch member in at least one closed state is configured to provide an additional electrical path between the at least one guard electrode and a reference potential.
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