Wearable 3D indoor positioning device and method based on attitude angle measurement

Abstract

The invention discloses a wearable three-dimensional indoor positioning device and method based on attitude angle measurement. The device includes an inertial sensor, an air pressure sensor, an embedded processor, a communication module, a power supply module and a three-dimensional indoor building model display module. The inertial sensor measures the attitude angle and acceleration signals at the left and right ankles, and the air pressure sensor collects the air pressure signal at the position of the person. In the embedded processor, information fusion processing is performed on the data obtained by the inertial sensor and the air pressure sensor, and the processed data is sent to the terminal of the ad hoc network through the Bluetooth module of the communication module, and the data received by the terminal is transmitted by the ad hoc network The packet is sent to the base station of the ad hoc network, and then the data packet is transmitted to the display module through the serial port, and the display module displays information such as the real-time position of the personnel. The power module supplies power to the embedded processor. The invention improves the three-dimensional indoor positioning accuracy and real-time performance.

Description

technical field [0001] The invention relates to the field of indoor positioning, in particular to a wearable three-dimensional indoor positioning device and method based on attitude angle measurement. Background technique [0002] A variety of indoor positioning technology solutions have been proposed in the prior art, such as wireless sensor positioning technology, ZigBee technology, infrared technology, radio frequency tag identification technology, ultra-wideband technology, Wi-Fi positioning technology, light tracking positioning technology, and image analysis, Beacon positioning, computer vision positioning technology, etc. However, these technologies are not universally applicable and real-time, and all require external equipment to assist positioning. Wi-Fi positioning technology needs to estimate the location of the receiver by setting up a Wi-Fi network indoors. The positioning of the image analysis method requires the acquisition and reprocessing of indoor images...

AI Technical Summary

Problems solved by technology

The positioning of the image analysis method requires the collection and reprocessing of indoor images. When the indoor light is dim, this method is limited and the data processing time is very long, and the real-time positioning performance is not good.

In practical applications, these solutions are difficult to achieve high-precision, high-real-time and universal applicability for the positioning of personnel in unknown environments

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