Indoor unmanned aerial vehicle positioning system

Abstract

The invention discloses an indoor unmanned aerial vehicle positioning system. The indoor unmanned aerial vehicle positioning system comprises an unmanned aerial vehicle body, a marker, a ground station and a three-dimensional space constructing system; the unmanned aerial vehicle body comprises a control box and an information receiving device; the marker is placed in a room, when the unmanned aerial vehicle body flies, the information receiving device identifies marker information and transmits to the control box, and the control box calculates the indoor three-dimensional space coordinate information of the unmanned aerial vehicle body through combining with aircraft navigation information. By means of the three-dimensional space constructing system, the indoor three-dimensional space data is stored in the ground station, and the ground station is capable of displaying the concrete position of the unmanned aerial vehicle in the room. The indoor unmanned aerial vehicle positioning system is capable of positioning the unmanned aerial vehicle in a room in which a GPS signal is easy to be shielded, enables the unmanned aerial vehicle performance to be improved and is convenient to use the unmanned aerial vehicle in different environments.

Description

technical field [0001] The present invention relates to unmanned aerial vehicles, in particular to an indoor unmanned aerial vehicle 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 used indoors, it cannot rely on the ...

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.

Images