发明申请
- 专利标题: SENSOR DEVICE AND METHOD FOR GRIP AND PROXIMITY DETECTION
- 专利标题(中): 传感器装置及其检测方法
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申请号: US12745093申请日: 2010-04-07
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公开(公告)号: US20120026121A1公开(公告)日: 2012-02-02
- 发明人: Reinhard Unterreitmayer , Claus Kaltner , Holger Steffens , Stefan Donat
- 申请人: Reinhard Unterreitmayer , Claus Kaltner , Holger Steffens , Stefan Donat
- 优先权: DE102009016355.7 20090407; DE102009016356.5 20090407; DE102009032357.0 20090708; DE102009057931.1 20091211
- 国际申请: PCT/EP2010/054613 WO 20100407
- 主分类号: G06F3/044
- IPC分类号: G06F3/044 ; G01N27/00 ; G01R27/26
摘要:
An electrical hand-held device is provided with improved proximity detection, which can be placed on a surface and has at least one transmission electrode, at least one reception electrode and at least one compensation electrode arranged between transmission electrode and reception electrode. The transmission electrode and the compensation electrode can be supplied with an electric switching signal of predetermined signal frequency and predetermined signal amplitude. Switching electric signal at the compensation electrode is phase-delayed with respect to the switching electric signal at the transmission electrode. Alternating electric fields radiated at the transmission electrode and the compensation electrode generate a current in the reception electrode, which is representative of an approach of a hand to the hand-held device. The transmission electrode and the reception electrode are arranged in such a way, that the impedance between the transmission electrode and the reception electrode exceeds a predetermined value, which is suitable to keep the current generated in the reception electrode under a predetermined value.
公开/授权文献
- US09236860B2 Sensor device and method for grip and proximity detection 公开/授权日:2016-01-12
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