Method and device for data acquisition of geomagnetic indoor positioning reference map

Abstract

The invention provides a data acquisition method and device for a geomagnetic indoor positioning reference map. The method comprises the following steps: acquiring spatial coordinate data in an acquisition indoor space and uploading the data to a data base; selecting a point in the spatial coordinate data as a starting point, driving the data acquisition device to move in the acquisition indoor space and acquiring a geomagnetic data value on a movement path and a corresponding spatial coordinate value, and binding and uploading the geomagnetic data value and the spatial coordinate value to the data base; predetermining a geomagnetic data threshold value, and when the geomagnetic data value is greater than the geomagnetic data threshold value, marking the geomagnetic data value as an abnormal geomagnetic data value. The data acquisition method and device for the geomagnetic indoor positioning reference map provided by the invention can be used for automatically acquiring three-dimensional geomagnetic data information in indoor space so as to provide a matched reference map for geomagnetic indoor positioning, so that the geomagnetic data in the indoor space are relatively efficiently and intelligently acquired.

Description

technical field [0001] The invention belongs to the field of indoor three-dimensional geomagnetic data acquisition, in particular to a method and device for acquiring geomagnetic indoor positioning reference map data. Background technique [0002] The development of smart cities is bound to consider indoor spatial information, but there is very little indoor information available, which hinders the development of smart cities. The perfect integration of indoor and outdoor information is the development trend of smart cities. Because most users spend 87% to 90% of their time indoors, GNSS signals cannot be directly obtained, and users cannot accurately locate indoors. Therefore, the acquisition of indoor location information is very important. Among many technologies that can provide indoor positioning information, the advantage of using geomagnetic positioning is that there is no need to deploy positioning information sources, the cost is low, and it is widely applicable t...

AI Technical Summary

Problems solved by technology

[0004] At present, the geomagnetic sensing device used needs to complete the collection of indoor three-dimensional geomagnetic data under human remote control. Therefore, in the process of collecting a large amount of data, it needs to consume a lot of time and manpower, which is not conducive to the collection of a large amount of geomagnetic data.

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