Indoor signal acquisition method and device based on MEMS sensor

Abstract

The invention discloses an indoor signal acquisition method and device based on an MEMS sensor. The method comprises the following steps: taking an indoor path starting point as an origin of coordinates of the MEMS (micro electro mechanical system) sensor; enabling the MEMS sensor to move along an indoor path, and in the moving process, calculating measurement coordinate positions of acquisition points on the indoor path by utilizing the MEMS sensor and collecting index parameters of wireless signals at the acquisition points; according to the physical coordinate position of the starting point and the measurement coordinate positions of the acquisition points, calculating the physical coordinate positions of the acquisition points; and obtaining correspondence relation of the physical coordinate positions of the acquisition points and the index parameters of the wireless signals corresponding to the acquisition points. Through the technical scheme provided in the invention, automatic acquisition and measurement of indoor signals can be realized, thereby improving the precision of the acquisition measurement positions and the signal parameters, and improving acquisition and measurement efficiency.

Description

technical field [0001] The invention relates to the field of positioning and navigation, in particular to an indoor signal acquisition method and device based on a MEMS sensor. Background technique [0002] In order to provide indoor positioning services, it is necessary to measure various indoor signal indicators that can be used for positioning, such as WiFi and base station signal strength. Usually use the method of RBI drive test to measure various signals. [0003] The method first sets the reference point of the outdoor GPS signal. Next, the surveyor walks into the room, each line goes to a measurement point, estimates the approximate position of the surveyor on the screen map of the mobile terminal according to the position of the surveyor in the room, and records the map position of the measurement point by marking the screen map . At the same time, the signal testing equipment is used at the measurement point to measure the signal parameters of the location, such...

AI Technical Summary

Problems solved by technology

[0004] However, in this method, the dotting position is determined by the surveyor’s estimated position. Not only may the estimated position be inaccurate, but at the same time, the surveyor performs manual dotting operations at each measurement position to generate measurement points on the screen map, which may be due to The click range is too large or the click position deviates, making the recorded position point inaccurate, further reducing the measurement accuracy of the measurement position, resulting in incorrect correspondence between position information and signal parameters, and long working time

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