Abstract:

     We presented a capacitive sensor based fuel level measurement approach to compensate the defect of  traditional  float variable resistor measurement approach. It detects fuel level based on the better linear relationship between fuel level and the capacitance of a capacitive sensor. Experimental results show that better linear relationship exists between  fuel level and the capacitance of a capacitive sensor, less than ±5% measurement error. It has such benefits as less power consumption and long lifetime.

Key words: capacitive sensor, fuel amount, level, sensor