摘要
为进一步研究基于UWB的无线定位技术,文中设计了一种基于UWB定位系统硬件平台。硬件平台基于模块式设计思路,选用STM32F405作为主控制器,通过SPI总线与DW1000射频芯片通信。UWB射频电路围绕DW1000设计布局,使用全向外置天线。硬件平台在通信方面设计使用GPRS无线通信模块并采用TOA定位方式,预留GPIO外设扩展接口。经制板测试,在视距空旷环境下最远通信距离为110m,在相同环境下100m测距均方根误差20.2cm,室内非视距环境中定位误差为20cm,满足室内高精度定位技术研究需求。
A hardware platform based on UWB positioning system was designed for further studying the wireless positioning technology based on UWB. The hardware platform is based on the modular design idea, using STM32 as the main controller and communicating with DW1000 RF chip through SPI bus. The UWB RF circuit was designed layout around of DW1000, with the use of full external antenna. The hardware platform designed GPRS wireless communication mode and adopted the TOA positioning mode, and reserved the GPIO peripheral extension interface. The measured results showed that the farthest communication distance was 110 m in LOS environment, the RMSE error of 100 m in the same environment was 20.2 cm, and the positioning error in indoor NLOS environment was 20 cm, which satisfied the research needs of indoor high-precision positioning technology.
作者
刘琦
沈锋
王锐
LIU Qi;SHEN Feng;WANG Rui(College of Automation,Harbin Engineering University,Harbin 150001,China;School of Electrical Engineering & Automation, Harbin Institute of Technology,Harbin 150001,China)
出处
《电子科技》
2019年第10期22-27,共6页
Electronic Science and Technology
基金
国家自然科学基金(61673128)
黑龙江省自然科学基金资助项目(F2015031)~~
