摘要
针对室内定位系统中标签节点续航时间短、便携性低和标签容量小的问题,设计了一种以STM32L053R8T6微控制器为核心器件、适用于采用时间差定位技术的室内定位系统的标签节点。在充分分析系统主要功耗来源基础上,选取尺寸较小的UWB模块DWM1000完成定位帧信息发送的基本功能,同时采用以固定频率工作模式和休眠模式切换的方式实现低功耗、易便携设计。为容纳大容量标签,基站采用FPGA处理器实现固定周期无线同步的方法,提升基站处理速率和保证稳定可靠的基准时间,从而实现精准定位。
In order to solve the problems of short duration,low portability and easy collision of multiple tags in indoor positioning system,a tag node based on STM32L053R8T6 microcontroller is designed,which is suitable for indoor positioning system using TDOA.Based on the full analysis of the main power sources of the system,the small size ultra wideband module DWM1000 is selected to complete the basic function of positioning frame information transmission.At the same time,the low-power and easy portable design is realized by switching the fixed frequency working mode and sleep mode.In order to accommodate large capacity tags,the base station uses FPGA processor to achieve fixed period wireless synchronization,which improves the base station processing speed and ensures a stable and reliable reference time,so as to achieve accurate positioning.
作者
彭利泽
刘宾
张新玉
武志凯
Peng Lize;Liu Bin;Zhang Xinyu;Wu Zhikai(College of Information and Communication Engineering,North University of China,Taiyuan 030051,China)
出处
《单片机与嵌入式系统应用》
2021年第2期67-70,共4页
Microcontrollers & Embedded Systems
