专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明公开

EP2861938A1 KAPAZITIVER SENSOR ZUR ERFASSUNG DER BEWEGUNG EINES OBJEKTS 有权
标题翻译： KAPAZITIVER传感器ZUR ERFASSUNG DER BEWEGUNG EINES OBJEKTS
公开(公告)号：EP2861938A1
公开(公告)日：2015-04-22
申请号：EP13729320.5
申请日：2013-06-12
申请人： Behr-Hella Thermocontrol GmbH
发明人： MARQUAS, Karsten , STEINKAMP, Michael , SCHLÜTER, Dirk
IPC分类号： G01D5/241
CPC分类号： G01L1/142 , G01D5/2417 , G06F3/0338 , H01G5/013 , H01G5/0136 , H03K17/975
摘要： The capacitive sensor for detecting the movement of an object, particularly for detecting the actuation of a key of an operating unit, is furnished with a first electrode (30; 32) and a second electrode (34; 36) which is provided for connection or mechanical coupling to or arrangement on the object, the distance of which second electrode from the first electrode changes (30; 32) when the object moves. The two electrodes (30, 34; 32, 36) form a first capacitor (26; 28) with a volume (40) between the electrodes (30, 34; 32, 36), the size of which changes when the object moves. An evaluation unit (38), which is connected to the two electrodes (30, 34; 32, 36) and determines a change of capacitance between the two electrodes (30, 34; 32, 36) resulting from a change of their spacing and volume, is further provided. A deformable, non-gaseous first dielectric (42) is arranged between the two electrodes (30, 34; 32, 36). The first dielectric (42) defines at least one gas volume (44) or, together with at least one of the two electrodes (30, 34; 32, 36) defines a gas volume (44) that is filled by a gaseous second dielectric, wherein at least a part of the second dielectric escapes from the gas volume (44) and from the volume (40) between the two electrodes when the two electrodes (30, 34; 32, 36) approach one another, and, when the two electrodes (30, 34; 32, 36) approach one another, the portion of the volume (40) between the two electrodes (30, 34; 32, 36) occupied by the first dielectric (42) increases and the portion of the volume (40) between the two electrodes (30, 34; 32, 36) occupied by the second dielectric decreases. (Figure 1)
摘要翻译：用于检测物体的运动的电容传感器，特别是用于检测操作单元的键的致动的装置，具有第一电极（30; 32）和第二电极（34; 36）当对象移动时，第二电极与第一电极的距离发生变化（30; 32）。两个电极（30,34; 32,36）在电极（30,34; 32,36）之间形成具有体积（40）的第一电容器（26; 28），其尺寸在物体移动时变化。评估单元（38），其连接到所述两个电极（30,34; 32,36）并且确定由于它们的间隔的改变而导致的两个电极（30,34; 32,36）之间的电容变化，以及体积，进一步提供。在两个电极（30,34; 32,36）之间布置有可变形的非气态第一电介质（42）。第一电介质（42）限定至少一个气体体积（44），或者与两个电极（30,34; 32,36）中的至少一个限定气体体积（44），其被气态第二电介质，其中当所述两个电极（30,34; 32,36）彼此接近时，所述第二电介质的至少一部分从所述气体体积（44）和所述两个电极之间的体积（40）逸出，并且当两个电极（30,34; 32,36）彼此接近，由第一电介质（42）占据的两个电极（30,34,32,36）之间的体积（40）的部分增加，并且部分由第二电介质占据的两个电极（30,34; 32,36）之间的体积（40）减小。

IPRDB

热门服务

关于我们

友情链接

联系方式