Unmanned aerial vehicle with indoor light stream positioning system

Abstract

The invention relates to an unmanned aerial vehicle with an indoor light stream positioning system. The unmanned aerial vehicle comprises an unmanned aerial vehicle body, four or more markers, a ground station and a three-dimensional space construction system; the markers are identification objects obviously distinguished from the background environment and placed on the indoor ground; the unmanned aerial vehicle body comprises a control box and an information receiving device; the information receiving device is used for identifying information of the identification objects; the control box comprises a navigation system, an image positioning system, a wireless digital transmission module, a calculation system and a radar avoidance system; and the navigation system is used for recording navigation information of the roll angle, the pitch angle, the course angle and the height over the ground of the unmanned aerial vehicle body. Position information of the unmanned aerial vehicle is determined through the identification objects, the difficulty that when an indoor GPS signal is shielded, GPS positioning cannot be used is effectively avoided, meanwhile, the unmanned aerial vehicle isinternally further integrated with the radar avoidance system, thus in the flight process, the unmanned aerial vehicle can automatically avoid movable objects such as indoor movable people, and an unmanned aerial vehicle operator conveniently and flexibly operates the unmanned aerial vehicle.

Description

technical field [0001] The invention relates to the technical field of unmanned aerial vehicles, in particular to an unmanned aerial vehicle with an indoor optical flow positioning system. Background technique [0002] Most of the existing UAVs rely on the GPS system for positioning. Since the GPS system is a satellite timing system, the satellites located at high altitudes perform unified broadcast timing, and the receiver calculates the timing of multiple satellites, and then obtains the corresponding Position data, and because the transmission distance is too long, the GPS signal that can generally be received is calculated in milliwatts, so the GPS signal is easily shielded, and some common materials, such as metal and water, have the most serious impact on electromagnetic signals , Excessively thick concrete walls will also produce a shielding effect, so only when used outdoors can the received continuous and reliable satellite signals be guaranteed. When the drone is ...

AI Technical Summary

Problems solved by technology

[0002] Most of the existing UAVs rely on the GPS system for positioning. Since the GPS system is a satellite timing system, the satellites located at high altitudes perform unified broadcast timing, and the receiver calculates the timing of multiple satellites, and then obtains the corresponding Position data, and because the transmission distance is too long, the GPS signal that can generally be received is calculated in milliwatts, so the GPS signal is easily shielded, and some common materials, such as metal and water, have the most serious impact on electromagnetic signals , Excessively thick cement walls will also have a shielding effect, so it can only be used outdoors to ensure continuous and reliable satellite signals received

When the drone is used indoors, it cannot rely on the GPS system for positioning

At the same time, because the GPS receiving system is very sensitive to signals in order to receive weak signals as much as possible, it is also easily affected by irrelevant electromagnetic signals and noise during use.

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