![电容式感测设备](/CN/2015/8/12/images/201580061016.jpg)
基本信息:
- 专利标题: 电容式感测设备
- 专利标题(英):Capacitive sensing device
- 申请号:CN201580061016.6 申请日:2015-10-12
- 公开(公告)号:CN107148752A 公开(公告)日:2017-09-08
- 发明人: L·拉梅施
- 申请人: IEE国际电子工程股份公司
- 申请人地址: 卢森堡埃希特纳赫
- 专利权人: IEE国际电子工程股份公司
- 当前专利权人: IEE国际电子工程股份公司
- 当前专利权人地址: 卢森堡埃希特纳赫
- 代理机构: 永新专利商标代理有限公司
- 代理人: 陈松涛; 王英
- 国际申请: PCT/EP2015/073600 2015.10.12
- 国际公布: WO2016/055667 EN 2016.04.14
- 进入国家日期: 2017-05-10
- 主分类号: H03K17/955
- IPC分类号: H03K17/955
A capacitive sensing device comprises an antenna electrode (12) for emitting an alternating electric field in response to an alternating voltage caused in the antenna electrode and a control and evaluation circuit (18) configured to maintain the alternating voltage caused in the antenna electrode equal to an alternating reference voltage on an alternating reference voltage node (22) by injecting a current into the antenna electrode (12) and to measure the current. The control and evaluation circuit (18) includes a microcontroller (30) with a digital output (28) for providing a digital signal and may include a low- pass filter (26) operatively connected to the digital output (28) for generating the alternating reference voltage by low-pass-filtering the digital signal. The control and evaluation circuit (18) further includes a first multiplexer (48) and a second multiplexer (200).
公开/授权文献:
- CN107148752B 电容式感测设备 公开/授权日:2020-08-14
IPC结构图谱:
H | 电学 |
--H03 | 基本电子电路 |
----H03K | 脉冲技术 |
------H03K17/00 | 电子开关或选通,即不通过通断接触的 |
--------H03K17/51 | .按使用特殊元件区分的 |
----------H03K17/945 | ..接近开关 |
------------H03K17/955 | ...应用容性检测器的 |