基于巨磁阻效应的车用节气门位置传感器

Automotive Throttle Position Sensor Based on Giant Magnetoresistance Effect

节气门位置传感器(TPS)是电子控制燃油喷射式发动机上的重要组成部分,传统的接触式节气门传感器已不能满足现代人们的需求。文章设计了一款基于巨磁效应的车用TPS,采用巨磁阻芯片作为感应元件,在结构和材料上对传统TPS进行改进和优化,并和传统的磁钢进行比较,结果表明,此款TPS在灵敏度和分辨率上有明显改善。证明了基于巨磁阻效应的TPS的设计可行。

Throttle position sensor is an important part of EFI engine, the traditional contact throttle sensor can not meet the needs. An automotive throttle position sensor based on giant magnetic effect is designed using giant magnetoresistance chip as inductive components. In the structure and material of traditional throttle position sensor is improved and optimized. Compared with the traditional magnets, the results show that sensitivity and resolution of the throttle position sensor has obviously improved. It is certificated that the design of the throttle position sensor based on giant magnetoresistance effect is feasible.