Life detecting system and method based on multi-rotor UAV

Abstract

The present invention discloses a life detecting system and method based on a multi-rotor UAV. The system comprises a multi-rotor UAV and a life detecting radar device mounted on the multi-rotor UAV,and further comprises a motion compensating device connected with the life detecting radar device. When the multi-rotor drone is flying in a to-be-tested area, the life detecting radar device performsliving body target detection; and during the detection process of the life detecting radar device, the motion compensating device performs motion compensation on a radar detection signal according tothe real-time position information of the multi-rotor drone so as to compensate for the displacement deviation caused by the jitter of the multi-rotor UAV. The technical scheme of the present invention has the advantages of a simple structure, a low cost, dynamic life detection, high detection efficiency, high precision, a flexible detection mode, and the like.

Description

technical field [0001] The invention relates to the technical field of life detection and rescue, in particular to a life detection system and method based on a multi-rotor unmanned aerial vehicle. Background technique [0002] After large-scale natural disasters such as earthquakes and landslides occur, the most urgent task is to quickly detect and search for the specific location of the trapped buried people, so as to organize rapid rescue of on-site search and rescue personnel. At present, the search and rescue of rescuers usually adopts the method of manual search by rescuers with hand-held search equipment. The commonly used search equipment is the life detector. The life detector needs manual operation to search, and the manual search moves slowly. The search area can only be checked point by point, the search efficiency is very low, the detection area is small, and because search and rescue personnel need to enter, it is easy to cause secondary hazards, and the effici...

AI Technical Summary

Problems solved by technology

However, at present, when life detection is realized based on the UAV platform equipped with detection radar, due to the influence of meteorological interference and the turbulence of the UAV itself during flight, it will produce severe jitter, resulting in yaw, pitch angle changes and roll, etc. These changes There will be a phase error, and the target of life detection is weak signals such as breathing, heartbeat and limb swing. Under the influence of the above-mentioned phase error, the weak signal cannot be accurately detected, that is, the life detection radar cannot work normally during the flight of the drone. , the radar cannot detect the target. Therefore, at present, the UAV is usually carried by the detection radar to fly to the designated position in the area to be measured. After the UAV is stationary, if the entire system (UAV and detection radar) is stationary The ground or roof, and then control the detection radar to search and detect the area within the coverage to ensure that the radar can work normally. However, this method must keep the radar static detection, and the scope and flexibility of search and rescue are still very limited, which is not practical. It cannot meet the rapid search needs of large-scale search and rescue activities

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