Ultralow-deployment indoor positioning system and method

Abstract

The invention provides an ultralow-deployment indoor positioning system and method. The system comprises a data acquisition module, a data processing module, a posture recognition module, a target tracking module, a geographic feature module and a position correction module, wherein the data acquisition module is used for providing a data source; the data processing module is used for providing preprocessing information; the posture recognition module is used for recognizing a target moving posture; the tracking module is used for recording a target moving trail; the geographic feature module is used for assisting positioning information processing; the position correction module is used for providing an accurate three-dimensional position through an optimization algorithm, and outputting the target moving posture. According to the ultralow-deployment indoor positioning system and the method provided by the invention, signal transmitters have no need to be densely distributed, an angle change of object movement is sensed through a gyroscope, and a speed change of object movement is sensed through an accelerometer, so that information such as a current position and the moving posture of an object are acquired; a terrestrial magnetism signal, a temperature signal, an air pressure signal and the like are combined for assisting positioning, and positional deviation caused by error accumulation is corrected, so that the positioning accuracy is greatly improved.

Description

technical field [0001] The present invention relates to an indoor positioning method, in particular to an ultra-low deployment indoor positioning system and method, which can collect and track target position information in multiple ways without relying on any external information source. Background technique [0002] Positioning technology has attracted much attention and developed rapidly in recent years. Although the outdoor positioning technology is very mature and has begun to be widely used, as the end of the positioning technology, the development of the indoor positioning technology has been relatively slow. Outdoor positioning systems such as GPS, AGPS, etc. have significantly weakened signal strength indoors, and there are problems of positioning difficulties and decreased accuracy, so they are not suitable for indoor positioning. [0003] According to research, common indoor positioning methods include: [0004] Infrared positioning technology, the positioning t...

AI Technical Summary

Problems solved by technology

Ultra-wideband positioning technology has the advantages of strong penetrating power, high security, low system complexity, and accurate positioning accuracy. However, since the newly added blind nodes also require active communication, the power consumption is high, and layout is required in advance. make the cost can not be reduced

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