公开(公告)号：US20110095771A1

公开(公告)日：2011-04-28

申请号：US12911806

申请日：2010-10-26

Applicant: Gerd REIME

Inventor： Gerd REIME

IPC: G01R27/26

CPC classification number: G01V3/088 ,  G01D5/24 ,  G01R27/2605

Abstract: A device and a method for the capacitive detection of an object which is preferably arranged behind a flat article that is transparent to electromagnetic radiation or a wall, including a sensor incorporating sensor electrodes for the detection of the object, preferably for the detection of relative movements between the sensor and the flat article or a finger, where a control circuit serves for the control of the sensor electrodes and for the evaluation of the output signals of the sensor, and, due to the fact that the sensor comprises at least one sensor electrode which is surrounded by at least one further electrode, the surrounding further electrode is connected to the sensor electrode by the control circuit in such a manner that, in the event of a change of the potential of the sensor electrode, the potential of the surrounding further electrode is regulated in the opposite sense to the sensor electrode in such a way that the sensor electrode remains at a pre-determined or pre-definable potential, such that there is produced a capacitive sensor which does not react to tilting or small changes in the spacing from the surface.

Abstract translation: 一种用于物体的电容检测的装置和方法，其优选地布置在对电磁辐射或壁透明的平坦物品的后面，该平坦物品包括传感器电极，用于检测物体，优选地用于检测相对运动 在传感器和扁平物品或手指之间，其中控制电路用于控制传感器电极和评估传感器的输出信号，并且由于传感器包括至少一个传感器电极 其被至少一个另外的电极围绕，所述周围的另外的电极通过控制电路连接到传感器电极，使得在传感器电极的电位变化的情况下，周围的电位进一步 电极以相反的方式被调节到传感器电极，使得传感器电极保持在预定或预先定义 使得产生电容式传感器，其不反应倾斜或与表面间隔的小的变化。