专利名称：CIRCUIT AND METHOD FOR EVALUATING
MEASUREMENT SIGNALS AND SENSORSYSTEM FOR CAPACITIVELY DETECTINGOBSTACLES
发明人：WIEST, Thomas,KELSCH, Manuel申请号：EP15750694.0申请日：20150810公开号：EP3180859B1公开日：20190410
摘要：A circuit for evaluating measurement signals of at least one sensor with acontrol circuit. A control signal having a first frequency is generated by a control sectionof the control circuit and the control signal is applied to the sensor. An electronicevaluation unit is provided for generating an evaluation signal originating from ameasurement signal generated by the sensor. The electronic evaluation unit generatesan opposing signal having the first frequency and a modifiable phase angle and
superposes the opposing signal and the evaluation signal. The signal resulting from thesuperposition of the opposing signal and the evaluation signal is fed to a synchronousdemodulator of the electronic evaluation unit.
代理机构：Patentanwälte Ruff, Wilhelm, Beier, Dauster & Partner mbB
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