电容法检测烟支点火端

Cigarette Handing Measurement Based On capacitive Sensor

本文介绍了用高频电路实现对香烟点火端的检测,也叫填充值检测。其原理是点火端的填充值影响电容探头的电介质,使的电容的大小发生变化,造成谐振回路中心频率发生偏移,从而把填充值的变化反映为电压的变化。本传感器检测标准为:分辨烟丝填充表面是否低于点火端1mm。

Cigarette handing measurement implemented by high frequent circuit is introduced in this paper, which is also called Filling Value （FV） Measurement. The principle of FV is that the FV of cigarette handing will impact the media of the capacityprobe, then the value of capacity will change, which make the centre frequent of the resonant circuit change. As a result, the change of voltage is instead of the change of FV. The test standard of the sensor is whether the gap between surface of tobacco and cigarette handing is more than lmm.