Target positioning and tracking system based on visible light communication and ccr

Abstract

The invention discloses a target positioning and tracking system based on visible light communication and CCRs (Cube Corner Retro-reflectors). The target positioning and tracking system comprises a plurality of LED (Light-Emitting Diode) lamps with different numbers and a plurality of CCRs with different numbers, wherein each LED lamp comprises an illuminating LED and a plurality of photoelectric detectors with different numbers; when light rays emitted by a certain illuminating LED enter the reflecting surface of a certain CCR, the CCR is used for modulating the number of the CCR into reflected light for transmitting outwards; the number information is received by the photoelectric detector on the LED lamp and is transmitted to a control center, and the position of the CCR is judged by using the control center according to the numbers of the LED lamp, the CCR and photoelectric detector. The target positioning and tracking system works in an LED illumination covering area, is used for positioning and tracking a target carrying a special receiver, and has the characteristics of freeness from radiofrequency radiation, low cost, low refitting difficulty, high system stability, high precision and the like.

Description

technical field [0001] The invention belongs to the technical field of target positioning, in particular to a target positioning and tracking system based on visible light communication and CCR. Background technique [0002] Target tracking and positioning has a wide range of application requirements in many occasions. Some existing positioning tracking methods include: using the GPS positioning module carried by the user to obtain user location information, and sending it back to the control center through wireless communication; using the camera network to obtain user information , and send it back to the control center through the wired network; use RFID technology to locate and track the location of the user carrying the RFID module. These methods have their own advantages and disadvantages: the cost of using GPS is lower, but requires users to carry special equipment, and the signal of GPS is weak indoors or in the center of the urban area, which is almost unusable; the...

AI Technical Summary

Problems solved by technology

These methods have their own advantages and disadvantages: the cost of using GPS is lower, but requires users to carry special equipment, and the signal of GPS is weak indoors or in the center of the urban area, which is almost unusable; the solution of using camera sensor realizes passive tracking and positioning , without the need for users to carry special equipment, but the cost of the solution is high and the cost will continue to increase with the increase of the coverage area. At the same time, it needs to cooperate with the image recognition algorithm to identify the user, and the accuracy is low; the use of RFID solutions is limited by the detection range of RFID. The detection range is small

[0003] In some scenarios, the above-mentioned solutions are not very applicable. For example, for the positioning and tracking of miners or mine vehicles in mines, radio frequency communication cannot be used in mines, and there is no GPS signal, and the cost of camera monitoring is high; another example is in large public areas. (Airports, stations, museums, gymnasiums, etc.) for the location tracking of security personnel / staff. There is no GPS signal in this indoor area, and the dense flow of people makes it difficult to identify the camera. The movement range of the tracked personnel is large and RFID continuous tracking is not applicable

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