RSSI与步长估算的井下人员定位装置研究

本文以STM32F103单片机,WiFi模块和加速度传感器为主要组成,设计了一种可改善精度的小型定位装置.该设计以单片机STM32F103为控制核心,用WiFi模块DS0047CN-EMW3166发射接收定位信号并传递信息,采用加速度传感器MMA7260Q得到携带装置人员的实时三轴加速度数据.所有信息与数据经过WiFi基站上传到井上服务器,利用RSSI技术与步长估计技术结合进行定位,得到具体的精确位置信息.对佩戴装置的人员是否处于摔倒状态,或位于危险地区进行判断.本定位装置具有成本低、实施方便、功能全面、可靠性、精度和灵敏度高等特点,能适应井下恶劣环境并长期稳定地工作.

Location Device of Underground Personnel Based on RSSI and Step Size Estimation Techniques

Based on STM32F103,WiFi module and acceleration sensor,a small positioning device with improved accuracy is designed.The design takes STM32F103 as the control core.The WiFi module DS0047CN-EMW3166 transmits and receives the positioning signal. Through the acceleration sensor MMA7260Q,the system gets the device real-time triaxial acceleration data.All information and data are uploaded to the on-site server via WiFi base station,and the RSSI technology is combined with the step size estimation technique to ob-tain specific precise location information,and whether the person wearing the device is in a fall state or in a dangerous area.The positio-ning device has the characteristics of low cost,convenient implementation,full function,reliability,high precision and high sensitivity,and can adapt to the harsh environment and long-term stable work.