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264results about How to "Prevent separation" patented technology

Unmanned perception based unmanned aerial vehicle route planning method

The invention discloses an unmanned perception based unmanned aerial vehicle route planning method for rapidly planning the vehicle driving route. According to the invention, based on the unmanned flight perception system, road video images around a target vehicle are photographed by utilizing an unmanned flight to be sent to a ground station; the ground station receives the video images and processes the video images so as to obtain the vehicle and road messages, route planning is carried out according to the vehicle position, and the route is transmitted to the unmanned aerial vehicle; and a computer module of the ground station calculates a flight control signal to control the unmanned aerial vehicle to follow the vehicle to proceed, and corrects the route in real time. According to the invention, based on an unmanned flight platform, the operation state is stable; and the road environment around the vehicle is photographed from a great height, the coverage area is wide, and the observed road traffic information is distinct and clear, so that the road distribution condition and the traffic condition around the target vehicle can be obtained rapidly, the reasonable route planning can be obtained, the route is more precise, and the road condition analysis is more timely and accurate.
Owner:BEIHANG UNIV

Vehicle environment sensing system and method based on unmanned plane

ActiveCN105512628AEasy to controlRelative position information is clear and unambiguousDetection of traffic movementCharacter and pattern recognitionUncrewed vehicleRoad surface
The invention relates to a vehicle environment sensing system and method based on an unmanned plane, and the system and method are used for quickly acquiring the road environment information around a vehicle. The sensing system comprises the unmanned plane and an earth station, the unmanned plane id connected with the vehicle through a mooring rope, the road surface is shot by the unmanned plane, and a video image is transmitted to the earth station; the earth station is arranged in the target vehicle, the earth station can process the video image to obtain the vehicle environment information, and the earth station also can calculate the flight control parameter and send the parameter to the unmanned plane to make the unmanned plane and the vehicle move together. The sensing method is based on the sensing system, the unmanned plane takes off and hovers above the vehicle, the unmanned plane establishes a communication for sensing the environment and transmits the video image to the earth station, the earth station processes the video image, calculates the vehicle environment information and transmits the information to the vehicle, and the earth station calculates the flight control parameter and transmits the parameter to the unmanned plane. According to the invention, the system can perform the wide area observation in the direction vertical to the vehicle plane direction, the coverage is wide, the road environment information around the target vehicle can be easily sensed, and the distance between the objects in the image can be precisely calculated.
Owner:BEIHANG UNIV

Amorphous alloy round pipe extrusion forming device and technology

The invention relates to an amorphous alloy round pipe extrusion forming device and technology. The device comprises a hydraulic type extrusion structure, an extrusion die and an extrusion tool frame, the extrusion die comprises an extrusion male die, an extrusion cylinder, an extrusion female die and a setting sleeve, the extrusion cylinder, the extrusion female die and the setting sleeve are sequentially and fixedly connected together, a cavity formed in the extrusion mould comprises a blank chamber, a flow dividing chamber, a welding-on chamber and a forming chamber, the extrusion female die is designed to be of a splicing block structure, a splicing line of each splicing block is selectively arranged at the position of the welding-on chamber, the extrusion female die is a cylindrical die body, a mold core is formed on the axis of the die body, the extrusion female die is sleeved with an extrusion female die clamping sleeve, the outer surface of the extrusion female die and the inner surface of the extrusion female die clamping sleeve are combined in a gradually-advancing type conical-face mode, and the extrusion female die clamping sleeve is fixed to the extrusion tool frame. The extrusion forming device is convenient to dismount and mount, and reasonable in structure, the size precision of a formed round pipe is high, the surface quality is good, extrusion wastes are easy to clear, and the production efficiency is high.
Owner:滕州市产品质量监督检验所

Path planning method for unmanned vehicles based on UAV perception

The invention discloses an unmanned perception based unmanned aerial vehicle route planning method for rapidly planning the vehicle driving route. According to the invention, based on the unmanned flight perception system, road video images around a target vehicle are photographed by utilizing an unmanned flight to be sent to a ground station; the ground station receives the video images and processes the video images so as to obtain the vehicle and road messages, route planning is carried out according to the vehicle position, and the route is transmitted to the unmanned aerial vehicle; and a computer module of the ground station calculates a flight control signal to control the unmanned aerial vehicle to follow the vehicle to proceed, and corrects the route in real time. According to the invention, based on an unmanned flight platform, the operation state is stable; and the road environment around the vehicle is photographed from a great height, the coverage area is wide, and the observed road traffic information is distinct and clear, so that the road distribution condition and the traffic condition around the target vehicle can be obtained rapidly, the reasonable route planning can be obtained, the route is more precise, and the road condition analysis is more timely and accurate.
Owner:BEIHANG UNIV
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