地磁室内定位基准图数据采集系统设计

近年来，地磁作为室内定位基准已经成为热点研究领域。本文深入研究了地磁室内定位技术，并通过大量试验，分析了室内磁性材料及电子设备对磁场的干扰，进一步探究了室内磁场特性，证明了磁场信息作为定位依据的可行性；利用Arduino IDE研发了智能地磁数据采集平台，该平台搭载多种传感器，如HMC5983磁传感器和惯性导航传感器等，采集一定密度的室内地磁数据，利用克里金法对该地磁数据进行差值处理，生成2 cm间隔大小的栅格地磁图，作为室内定位基准图保存在数据库中。

Design of the Acquisition System of Indoor Positioning Reference Map Based on Magnetic Field Data

In recent years, as an indoor positioning benchmark, geomagnetism has become a hot research field. This paper deeply studied geomagnetic indoor positioning technology,analyzed the interference of the indoor magnetic materials and electronic equipment to the magnetic field by a large number of experiments, and explored the characteristics of indoor magnetic field to prove the feasibility of magnetic field information as a basis for positioning; developed a data acquisition platform for intelligent geomagnetism using Arduino IDE. The platform is equipped with a variety of sensors, such as the HMC5983 magnetic sensor, inertial navigation sensors and so on. We can use it to collect the geomagnetic data of a certain density, and use the Kriging method to process the difference of geomagnetic data. The final result is the generation of 2 cm interval of the size of the grid geomagnetic map to become the indoor positioning reference map stored in the database.