关键词: Pcap01, 电容传感器, 液位测量

Abstract:

In order to measure petrol in the fuel tank,utilizing the principle of capacitance which changes with the change of the transmission medium between plates,a capacitive liquid level sensor system has been designed based on Pcap01 chip which transfers capacitance to the digital mode by containing a microcontroller (MCU).For the purpose of data calibration,the cylindrical capacitive sensor has been applied to reduce parasitic capacitance as well as the setting of the internal register of Pcap01 chip.This system has been tested repeatedly in an experimental platform.Experiments show that this system has good accuracy linearity.Thus,this capacitive liquid level sensor system has been presented.

Key words: Pcap01;capacitive sensor;liquid level measurement