基于各向异性磁电阻(AMR)开关芯片的磁性液位计  

Magnetic liquid level gauge based on anisotropic magnetoresistance(AMR) switch sensor

作　　者：徐梓丞 彭斌[2] XU Zi-cheng;PENG Bin(Chongqing Foreign Language School,Chongqing 400039,China;University of Electronic Science and Technology of China,Chengdu 611731,China)

机构地区：[1]重庆外国语学校,重庆400039 [2]电子科技大学电子科学与工程学院,四川成都611731

出　　处：《磁性材料及器件》2019年第1期49-50,54,共3页Journal of Magnetic Materials and Devices

摘　　要：磁性液位计具有广泛的应用领域。利用各向异性磁电阻(AMR)开关芯片设计了一种磁性液位计及其测试电路系统,利用微处理器的I/O口直接读取各个AMR传感器的输出电压,从而获得液位高度信息,利用USB转UART实现和计算机之间的液位数据通信。测试结果表明,所制作的液位计可以准确监测液位高度。Magnetic liquid level gauge has great applications in many fields.In this work,a magnetic liquid level gauge and its measurement circuit system were designed.The output voltage was directly sampled by I/O port of the microprocessor and the liquid level was determined from the measured voltages.The liquid level data were transferred to computer by a USB to UART converter.The results show that the prepared liquid level gauge can monitor the liquid level.

关 键 词：磁性液位计 AMR开关芯片 测试电路 

分 类 号：TH86[机械工程—仪器科学与技术] TP212.13[机械工程—精密仪器及机械]