专利内容由知识产权出版社提供
专利名称：Circuit Arrangement for Determining a
Capacitance of a Number of CapacitiveSensor Elements
发明人：Randolf Kraus申请号：US13575678申请日：20110124
公开号：US20120286809A1公开日：20121115
专利附图：
摘要：A circuit arrangement for determining a capacitance of a number n of capacitivesensor elements (SESEn) comprises at least one collecting capacitor (CSCSm), a reference
voltage source (RQ), an evaluation device (AE) connected to the at least one collectingcapacitor to evaluate a voltage present at the at least one collecting capacitor , a controlunit (MC) for generating at least one control signal (SSSSk), and at least one integratedcircuit (ICICm) connected to the reference voltage source, the sensor elements, and theat least one collecting capacitor. The at least one integrated circuit comprises a number kof changeover switches (WSWSk) responsive to the at least one control signal to connectthe respectively associated sensor element to the reference voltage source in a firstswitching position, and to the at least one collecting capacitor in a second switchingposition.
申请人：Randolf Kraus
地址：Bretten DE
国籍：DE
更多信息请下载全文后查看