首页>
外国专利>
Capacitance measurement circuit for measuring the capacity by using a sine wave voltage signal, capacity measurement method and capacitance measurement sensor system
Capacitance measurement circuit for measuring the capacity by using a sine wave voltage signal, capacity measurement method and capacitance measurement sensor system
展开▼
机译:通过使用正弦波电压信号来测量电容的电容测量电路,电容测量方法和电容测量传感器系统
展开▼
页面导航
摘要
著录项
相似文献
摘要
A capacity measuring circuit includes a measuring voltage source configured to feed a sinusoidal voltage signal to a first terminal of a capacity to be measured so as to cause a temporal change in a charge stored on the capacity to be measured. The capacity measuring circuit additionally includes a delta-sigma modulator. The delta-sigma modulator is configured to receive a charge from a second terminal of the capacity to be measured and to provide a digital output signal which is dependent on a quantity of the charge received from the capacity to be measured. The capacity measuring circuit may be employed in a sensor system.
展开▼