带有自动标定功能的电容式燃油传感器设计  

Design of Capacitance-type Fuel Sensor with Automatic Calibration

作　　者：张润臣 鲍康胜[1] 黄鹤[2] 

机构地区：[1]合肥市第六中学,安徽省合肥市230061 [2]合肥工业大学 机械与汽车工程学院,安徽省合肥市230009

出　　处：《农业装备与车辆工程》2014年第7期1-4,共4页Agricultural Equipment & Vehicle Engineering

基　　金：中央高校基本科研业务费专项资金(20136hzx0006)

摘　　要：电容式燃油传感器由于其结构简单、测量精度高,代表着汽车燃油传感器的一个重要的发展方向。然而这种测量方法需要预知被测燃油的介电常数,且测量结果与该介电常数紧密相关,为保证测量的准确性需要定期标定被测介电常数,因此限制了该方法的广泛使用。针对这些问题,提出带有自动标定功能的电容式液位传感器的设计方法,通过数学建模、仿真分析、快速控制原型和传感器设计及标定实验验证了提出的电容式液位传感器可确保燃油介电常数发生变化时测量结果的准确性。Capacitance-type fuel sensor is an important development direction of the automobile fuel sensor because of its advantages such as simple structure, high measuring accuracy. But the accuracy of the traditional capacitance-type measurement depends on the dielectric constant of the fuel which needs to be known. The sensor needs to be calibrated periodically, thus this method is constrained in the application. This paper proposed the design method of the capacitance-type fuel sensor with automatic calibration by the creature of the math model, simulation analysis, rapid control prototype, sensor structure design and experiment validation. The result showed that the proposed sensor could ensure the measurement accuracy, even the dielectric constant was changed.

关 键 词：电容式 自动标定 快速控制原型 

分 类 号：U463.73[机械工程—车辆工程]