31 results about "Sense and avoid" patented technology

The present invention is a Sense-And-Avoid Display System (SAVDS) that integrates airborne target position data from a ground-based radar with unmanned aerial vehicle (UAV) position data from the UAV ground control station (GCS). The UAV GCS receives the UAV position data from a global positioning system (GPS) element in the flight management autopilot system in the UAV. Using a high-resolution display, the SAVDS shows the GPS position of the UAV in relation to other radar-detected airborne targets operating in the same airspace. With the SAVDS co-located adjacent to the GCS computer controlling the UAV, the SAVDS instructs the UAV operator to change the heading and / or elevation of the UAV until any potential midair aircraft conflict is abated. The radar-detected airborne target data and the UAV GPS data are integrated and displayed with georeferenced background base maps that provide a visual method for tracking the UAV and for performing collision avoidance.

A trajectory-based sense-and-avoid system for use on an aircraft is provided that utilizes 4-D constructs, such as 4-D trajectories or 4-D polytopes, to maintain separation from other aircraft and / or to avoid collisions with other aircraft. In certain embodiments the trajectory-based sense-and-avoid system utilizes 4-D trajectories provided from an external source and / or 4-D trajectories estimated based on a variety of data sources during operation.

An apparatus carried by an unmanned vehicle to provide passive sensing and facilitate avoiding airborne aerial obstacles is provided. The apparatus can include at least one, but typically multiple optical systems installed, for example, in the nose of the aerial vehicle to passively sense and determine a range, direction, and velocity of the airborne obstacles to allow the aerial vehicle to avoid the airborne obstacles. The typical optical system includes at least one focal plane array or other imaging device configured to receive a wide field of view and at least one focal plane array or other imaging device configured to receive a steerable narrow field of view within the wide field of view to allow concentrated determination of the range, direction, and / or velocity of obstacles detected by the wide field of view imaging devices.

Systems and methods for navigating an unmanned aerial vehicle are provided. The method includes detecting a possible obstacle. The method includes determining a predicted path for the possible obstacle. The method includes determining that the possible obstacle will cause a collision with the unmanned aerial vehicle based on the predicted path. The method includes determining when the possible obstacle is cooperative. The method includes controlling the unmanned aerial vehicle to perform an avoidance maneuver when the possible obstacle is not cooperative. The method includes determining whether to initiate communications with the possible obstacle when the possible obstacle is cooperative.

A multifunction airborne radar device includes a plurality of transmit antenna modules and / or receive antenna modules that are fixed relative to the aircraft, placed substantially over the surface of the aircraft so as to form transmit and receive beams, enabling targets to be detected for implementing a sense-and-avoid function. The airborne radar device may also comprise processing means for tracking the detected targets and for generating information sent to an air traffic control center and / or to a control device on board the aircraft. The processing device may also receive data relating to the aircraft, enabling the antenna beams to be adjusted and the tracking calculations to be refined.

An airborne radar device having a given angular coverage in elevation and in azimuth includes a transmit system, a receive system and processing means for carrying out target detection and location measurements. The transmit system includes: a transmit antenna made up of at least a first linear array of radiating elements focusing a transmit beam, said arrays being approximately parallel to one another; at least one waveform generator; means for amplifying the transmit signals produced by the waveform generator or generators; and means for controlling the transmit signals produced by the waveform generator or generators, said control means feeding each radiating element with a transmit signal. The radiating elements being controlled for simultaneously carrying out electronic scanning of the transmit beam in elevation and for colored transmission in elevation.

A radar device includes an antenna having at least two linear arrays of radiating elements being orthogonal to one another, a first array being used to focus a transmission beam in a first plane and a second beam being used to focus a reception beam in a second plane, orthogonal to the first plane. The focussing of the beam is obtained in the first plane by colored emission followed by a reception beam formation by computation, and in that the focussing of the beam is obtained in the second plane using reception beam formation by computation. The colored emission is carried out by combining antenna transmission sub-arrays in such a manner as to form a sum channel and a difference on reception channel according to the monopulse technique.

The invention provides six different display modes illustrating interaction and relative locations of two or more aerial vehicles (AVs), with at least one of the AVs being controllable by a ground-based or airborne-based controller of an unmanned aerial vehicle (UAV) or a pilot of a standard manned aircraft. Some display modes also indicate a predicted distance of closest approach of two AVs, the possibility of conflict or collision, and a remaining time, measured relative to the present time, before this conflict occurs. An audio and / or visual indicator advises the AV controller if this conflict event is likely to occur and recommends an acceleration or deceleration increment that may avoid such conflict.

The invention discloses a multiple-rotor-wing unmanned aerial vehicle sensing and avoiding system which comprises a barrier avoiding module. The output end of the barrier avoiding module is connected with a flight control module, the input end of the barrier avoiding module is further connected with a navigation module, the barrier avoiding module is further connected with an ADS-B perception module for data receiving and sending, the ADS-B perception module comprises an ADS-B OUT transmitting module and an ADS-B IN receiving module, the ADS-B OUT transmitting module is connected with a transmitting antenna, and the ADS-B IN receiving module is connected with a receiving antenna. The invention further discloses an avoiding method which simplifies spatial perception and barrier avoiding complexity of an unmanned aerial vehicle, can guarantee safe space flight of the unmanned aerial vehicle without dependence on an air control system, and is suitable for the low-flying multiple-rotor-wing unmanned aerial vehicle sensing and avoiding system.

The invention discloses a pressing tool system for long-strip-shaped workpiece machining. The system comprises pressing tool units. Each pressing tool unit comprises a pressing mechanism arranged on one side or two sides of a long-strip-shaped workpiece. Each pressing mechanism comprises a rotary device, a pressing arm and an ejecting mechanism, wherein the rotary device rotates in the horizontal direction, the pressing arm is arranged on the rotary device, one end of the pressing arm makes contact with the ejecting mechanism, the middle of the pressing arm is hinged to the upper end of the rotary device, the ejecting mechanism drives the pressing arm to rotate in the vertical direction by means of the lever principle, and the other end of the pressing arm presses the upper side of the workpiece. The whole pressing tool system for long-strip-shaped workpiece machining comprises the independent pressing tool units and is not limited by the length of the workpiece, cutters of a machining device continuous move, and the system is not hindered by pressing units. The pressing mechanisms can automatically sense and avoid the pressing units. The system and a method greatly improve machining efficiency, compared with traditional manual pressure application, labor intensity of workers is reduced, machining precision and machining quality of products are improved, production cost is reduced, and the system and method are suitable for large-scale application and popularization.

The invention discloses an air-ground coordination unmanned aerial vehicle sensing and avoiding system. The air-ground coordination unmanned aerial vehicle sensing and avoiding system comprises a visual sensing system, an image processing system and a flight control system which are arranged on an airplane. The visual sensing system is used for collecting image information of a target, and then transmitting the image information to the image processing system. The image processing system outputs the image information of the target in two paths. In one path, unprocessed image information is directly transmitted out to a ground system; in the other path, processed target waypoint information is transmitted to the flight control system, and the flight control system interacts with the ground system. The invention further provides an air-ground coordination unmanned aerial vehicle sensing and avoiding method. The uncertainty caused by pure-ground-control unmanned aerial vehicle flight trajectory avoiding is avoided, and the uncertainty caused when the pure unmanned aerial vehicle independently avoids barriers in air is avoided.

The invention discloses a pixel unit and a pixel structure, comprising a first sub-pixel, a second sub-pixel and a third sub-pixel, the first sub-pixel surrounds the second sub-pixel, and the second sub-pixel surrounds the third sub-pixel. In the pixel unit, the first sub-pixel surrounds the second sub-pixel, the second sub-pixel surrounds the third sub-pixel, and the three sub-pixels are nested and matched, so that when the pixel units are arranged on the same horizontal line or the same vertical line, the sub-pixels are not interlaced Phenomenon, to avoid the display of jagged and glitchy. A manufacturing method of the pixel structure is also proposed. The evaporation of all pixels does not need to reserve an additional gap, which is conducive to reducing the difficulty of the process and improving the yield of the process.

The invention provides a visual servo-based sense-and-avoid system. The visual servo-based sense-and-avoid system includes an unmanned aerial vehicle, an image acquisition system, a visual servo control system and a navigation positioning system; the visual servo system includes a visual target detection and tracking module, a security envelope module and a visual servo controller. The invention also provides a visual servo-based sense-and-avoid method. With the visual servo-based sense-and-avoid method and system of the invention adopted, rapid sensing for surrounding airspace environment can be realized; avoidance maneuvering for space flight targets can be completed independently and autonomously without intervention and operation of ground operation personnel required under a situation that no distance measuring sensor is installed. The visual servo-based sense-and-avoid method and system of the invention have the advantages of low load requirements, high control precision and high intelligence, and can improve the airspace flight safety capacity of the unmanned aerial vehicle.