Ultrasonic wave indoor quick positioning system and method capable of remote monitoring

Abstract

The present invention provides an ultrasonic wave indoor quick positioning system and method capable of remote monitoring, and relates to the indoor positioning and position sensing technology field, more especially relate to the ultrasonic wave indoor quick positioning system and method capable of performing remote monitoring and executing the position calculation at a single-chip microcomputer and visually displaying the physical location at a terminal. The system comprises a target node, a beacon node, a gateway and a terminal, the target node is connected with a beacon node, and the target node is communicated with the terminal through the gateway; the target node receives a location command emitted by the terminal and sends radio-frequency signals and ultrasonic wave signals to the beacon node; the beacon node passes back a data packet to the target node; the terminal sends the location instruction to the target node, and the target node transmits the current position information to the terminal; and the terminal provides the position information passed back by the target node in a coordinate system diagram for users to check in real time. The ultrasonic wave indoor quick positioning system is high in location precision, and the average location error is smaller than 5cm; and the ultrasonic wave indoor quick positioning system is fast in system location speed and high in location frequency.

Description

technical field [0001] The invention relates to an ultrasonic indoor rapid positioning system capable of remote monitoring and its positioning method, which relate to the technical field of indoor positioning and position sensing, and more specifically relate to a system that can be remotely monitored, perform position calculation at the end of a single-chip computer, and visually display the physical position at the terminal An ultrasonic indoor rapid positioning system and method capable of remote monitoring. Background technique [0002] The Global Positioning System (GPS) can provide the location information of objects with an accuracy of meter level in the outdoor environment, and if it is corrected by the principle of difference, it can even reach the decimeter level. However, GPS does not work well in indoor environments because GPS positioning results are drastically deteriorated by multipath effects and signal occlusion. Therefore, its positioning accuracy is far b...

AI Technical Summary

Problems solved by technology

Each beacon transmitter in the Cricket system must continuously transmit ultrasonic radio frequency signals according to its coordination mechanism, which increases the power consumption of the system; for a receiver placed on a moving object, TDOA ranging with different beacon transmitters, its position may occur Move, resulting in asynchronous moving target distance samples, resulting in poor positioning accuracy for dynamic targets

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