摘要
设计了一种新型的分段电容式汽车燃油油位传感器,即在两块极板间沿测量高度上等间距构造n段初始值相同的微小电容,一旦油液进入微小电容极板内其电容值就会超过初始值,通过判断这些超过初始值的电容数量即可根据其几何间距计算出油液高度。当分段数足够多时可实现高精度且与介质无关的液位测量。实验结果验证了产品的实用性和油品兼容性。
A novel multi-segments capacitive fuel level sensor was designed. Along the length of measurement,n mini-capacitors with same initial capacitive value were distributed uniformly on a pair of parallel polar plates. The value of each mini-capacitor will be greater than its initial value once fuel enters into its polar plates. Then the fuel level can be gained by counting the number of mini-capacitors which value changed and the geometric dimensions between mini-capacitors. The precision of fuel level can be improved by increase the number of mini-capacitors,and the measurement will be independent about the fuel characteristics. The experiment results show the practicality and fuel compatibility of sensor.
出处
《重庆理工大学学报（自然科学）》
CAS
2015年第6期118-123,共6页
Journal of Chongqing University of Technology：Natural Science
基金
重庆市科技型中小企业技术创新基金资助项目(11C26215115773)
关键词
平行极板
分段电容
油位传感器
油品兼容
parallel polar plate
multi-segments capacitor
fuel level sensor
fuel compatibility
