摘要
利用等效磁荷法建立了橡胶磁条的磁场强度模型,分析了磁条磁场分布特征。设计了一种基于线性霍尔元件与单片机的自动导引车通用磁导航传感器,将16个霍尔元件AH49E组成一字型阵列,感受磁条磁场强度,并用软件模拟设计了SPI接口,又集成CAN、RS232等接口,提高了系统通用性。针对不同导引磁条或磁钉,提出一种系统偏移算法,智能输出系统当前偏移距离,从而提高了系统的应用范围。通过实验不仅验证了传感器的准确性,而且还对传感器基本参数进行了标定。
The magnetic field intensity model of rubber magnetic stripe was established by equivalent magnetic charge method in order to analyze the magnetic field distribution characteristics of magnetic stripe.A universal magnetic navigation sensor for Automatic Guided Vehicle (AGV) based on linear Hall element and single chip microcomputer was designed,and 16 Hall elements AH49E was used as an array to form the magnetic field intensity of the magnetic stripe.The interface of SPI was designed by software simulation,and the interfaces of CAN and RS232 were integrated, which improved the universality of the system.A system offset algorithm was proposed for different guiding magnetic stripes or magnetic nails,and the current offset distance of the intelligent output system was improved,so as to improve the application range of the system.Through the experiment,this paper verifies the accuracy of the sensor and calibrates the basic parameters of the sensor.
作者
王惠
徐志伟
WANG Hui;XU Zhi-wei(College of Aerospace Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)
出处
《仪表技术与传感器》
CSCD
北大核心
2018年第12期25-29,共5页
Instrument Technique and Sensor
基金
十三五装备预研基金项目
江苏高校优势学科建设工程项目
