Emergency positioning system and positioning method based on ultraviolet beacons

Abstract

The invention discloses an emergency positioning method based on an ultraviolet beacon, and the method specifically comprises the steps: modulating a hemispherical ultraviolet LED array signal, and transmitting the ID, emission angle and distance measurement signal of a current ultraviolet LED array; the information of other ultraviolet LED arrays received by the hemispherical ultraviolet LED array is stored, the ultraviolet LED array with the ID being 1 is used as the origin of a coordinate system, the position coordinates of all the ultraviolet LED arrays in the whole positioning network are obtained, and an ultraviolet light positioning network in the emergency positioning environment is constructed; the ultraviolet light sensor is used for receiving ultraviolet light signal intensity in the ultraviolet emergency positioning network, and the ultraviolet light LEDs with the first four signal intensity are selected for positioning, so that the position information of the target terminal is obtained. By adopting the positioning method provided by the invention, the problem of positioning an area with a poor satellite positioning effect can be effectively solved, a foundation is laid for path planning and autonomous navigation based on ultraviolet light, and the application prospect is wide.

Description

technical field [0001] The invention belongs to the technical field of optoelectronic information, and in particular relates to an emergency positioning system and a positioning method based on an ultraviolet light beacon. Background technique [0002] At this stage, the application scenarios of positioning technology are constantly expanding, and emerging applications are no longer satisfied with the outdoor positioning scenarios based on GPS, Beidou and other satellite positioning. The wireless sensors mainly used in the current emergency positioning network mainly include: Wi-Fi, Bluetooth, infrared, ultra-wideband, ultrasonic and visible light. [0003] The cost of Wi-Fi, ultra-wideband and ultrasonic technology is too high; Bluetooth interferes greatly with each other in the case of extensive use, and is prone to disconnection; visible light is interfered by other light sources; infrared light is also easily interfered by temperature. In view of the shortcomings of the...

AI Technical Summary

Problems solved by technology

[0003] The cost of Wi-Fi, ultra-wideband and ultrasonic technology is too high; Bluetooth interferes with each other a lot in the case of heavy use, and is prone to disconnection; visible light is interfered by other light sources; infrared light is also easily interfered by temperature

Images