737 results about "Cruise" patented technology

The invention provides a low-altitude remote sensing system based on an automatic cruise unmanned aerial vehicle. The low-altitude remote sensing system comprises a load system, a data acquisition system, a data transmission system and a control system. High-precision constant altitude cruising of the unmanned aerial vehicle along a preset route can be realized, and remote sensing data acquisition is performed. The scheme has remarkable effects of being lightweight, high in time and space resolution and low in cost.

The invention discloses a fan blade autonomous inspection method based on an unmanned aerial vehicle. The method comprises the following steps that S1, determining whether the geometric structure of ato-be-inspected fan is known, if yes, entering the step S2, if not, entering the step S3; S2, carrying out image shooting on a to-be-inspected fan, determining coordinate information of a plurality of inspection points on the fan in combination with the geometric structure of the to-be-inspected fan, and entering the step S4, the inspection points being target points shot during inspection; S3, carrying out image shooting on the to-be-inspected fan, acquiring coordinate information of a plurality of inspection points on the fan through image processing, and entering the step S4; and S4, according to the coordinate information of the inspection point, determining a cruise point coordinate and generating an autonomous cruise trajectory, the cruise point being a place where the unmanned aerial vehicle hovers and shoots, and the unmanned aerial vehicle completing inspection of the fan blade according to the autonomous cruise trajectory. According to the invention, the workload of autonomous inspection route generation can be effectively reduced, the accuracy of the route is improved, and the inspection efficiency of the fan is improved.

The invention discloses a fixed-wing aircraft on which retractable multi-rotor assemblies are mounted and which can perpendicularly take off and land. In the scheme of the fixed-wing aircraft, the fixed-wing aircraft comprises fixed-wing assemblies, retractable multi-rotor assemblies, a multi-rotor extending and retracting control mechanism, a multi-rotor hatch which can be opened and closed and a hatch opening and closing control mechanism. The fixed-wing aircraft is characterized in that when the aircraft is in a take-off stage or a landing stage or when the aircraft needs to hover in the air, the retractable multi-rotor assemblies in the lower part of an aircraft body are unfolded to provide a perpendicular take-off and landing capacity; when the aircraft cruises at a high speed, the multi-rotor assemblies are retracted in the aircraft body, the multi-rotor hatch is closed to keep the aerodynamic performance of the fixed-wing aircraft; and besides, when the fixed-wing aircraft is in perpendicular take-off and landing state, hovering state and cruising state at a high speed, the highest energy service efficiency can be obtained, so that the fixed-wing aircraft disclosed by the invention has a large perpendicular take-off and landing weight and a long range at the same time. According to the fixed-wing aircraft disclosed by the invention, a solution of a perpendicular take-off and landing fixed-wing unmanned aerial vehicle which is low in cost and high in energy efficiency is provided, is wide in application, and is particularly suitable for being applied to trades including point-to-point article transportation, long-distance cruise and the like.

The invention discloses an unmanned operational intelligent ship apparatus which comprises an intelligent ship body. The intelligent ship body is provided with a main control module. The main control module is connected with a navigation system, a water quality detection system and a data transmission module. The water quality detection system comprises a sensor module arranged at the lower part of the intelligent ship body. The navigation system comprises a Beidou and GPS dual-mode positioning module and a compass module. The main control module is further connected with an execution mechanism, a range finding module, and an electricity amount detection system. The data transmission module communicates data with an intelligent terminal. The intelligent terminal is provided therein with a control system APP used to control the intelligent ship. The apparatus and the control system of the invention are able to realize self-cruise, to automatically avoid barriers, to automatically back charge, to communicate data with the intelligent terminal and to control an unmanned operational intelligent ship according to the data acquired on the site. And at the same time, the monitoring and managing of the intelligent ship and the water areas become more convenient by providing checkable intelligent ship's travel trajectory at any time, the ship power amount state, the water quality parameters of a culturing area to control the working of the intelligent ship.

The invention discloses an unmanned aerial vehicle inspection method for an unknown fan structure. The method comprises the following steps: S1, multi-angle photographing of a whole fan is carried outat a long distance, and the whole fan should be contained in each picture and be close to the center of each picture; S2, inspection point coordinate information for equally dividing the blade is calculated by utilizing obtained key inspection point coordinate information; S3, required cruise point coordinate information is calculated by utilizing the inspection point coordinate information, anda flight path is generated; S4, an unmanned aerial vehicle takes off and arrives at a cruise point, and the pose of the unmanned aerial vehicle is adjusted by utilizing inspection point coordinate information to enable the unmanned aerial vehicle to face a target point; and S5, target identification is performed on an inspection point once before photographing of a cruise point, and the attitude of a holder is adjusted again to make the inspection point be close to the center of each picture as much as possible. The inspection point can be close to the center of each picture as much as possible, and the reliability of autonomous inspection of the unmanned aerial vehicle is higher while the efficiency is improved.

A system for bistatic radar target detection employs an unmanned aerial vehicle (UAV) having a ramjet providing supersonic cruise of the UAV. Deployable antenna arms support a passive radar receiver for bistatic reception of reflected radar pulses. The UAV operates with a UAV flight profile in airspace beyond a radar range limit. The deployable antenna arms have a first retracted position for supersonic cruise and are adapted for deployment to a second extended position acting as an airbrake and providing boresight alignment of the radar receiver. A mothership aircraft has a radar transmitter for transmitting radar pulses and operates with an aircraft flight profile outside the radar range limit. A communications data link operably interconnects the UAV and the tactical mothership aircraft, transmitting data produced by the bistatic reception of reflected radar pulses in the UAV radar antenna to the mothership aircraft.

The invention provides a vertical take-off and landing unmanned aerial vehicle and a control method thereof. A vehicle body of the unmanned aerial vehicle adopts aerodynamic layout of high lift-drag ratio class flying wings, and four motors and propellers are installed on the vehicle body in a mode of cross-shaped arrangement. An elevating control torque is formed by the thrust difference generated by the upper propeller and the lower propeller of the vehicle body, a yaw control torque is formed by the thrust difference generated by the left propeller and the right propeller of the vehicle body, and through the roll control torque formed by the different rotating speeds of the four propellers, the attitude control of the vehicle body of the unmanned aerial vehicle is conducted so that vertical take-off and landing in a narrow region and spot hover at any positions in the flying process of the unmanned aerial vehicle can be achieved. After the unmanned aerial vehicle is switched into a flat flying state, the vehicle body of the class flying wing layout can generate a large cruise lift-drag ratio, the effective loading level of the unmanned aerial vehicle is greatly improved, and the flying distance of the unmanned aerial vehicle is greatly prolonged. When the unmanned aerial vehicle horizontally flies, propelling can be conducted for low-speed flying only by using the left propeller and the right propeller, and propelling can be conducted for high-speed flying by simultaneously using the four propellers.

The invention discloses a method for automatic cruise detection of comprehensive information of greenhouses. According to the method, an optimal cruise path can be set according to the needs of different greenhouse soil bin structures and greenhouse comprehensive information acquisition, the precision of cruise is guaranteed through ultrasound position detection, a detection target is located based on laser sensing, and power is timely supplemented to a mobile platform through an automatic charging device during cruise intervals. Thus, continuous-cruise dynamic monitoring on greenhouse environment and crop information is realized, the detection efficiency and accuracy are improved, and an unmanned management mode is realized. The method of the invention can be applied to detection of greenhouse environment and crop growth information.

The invention discloses a method for extracting the cruise section of a flight path from a three dimensional position sequence of an air craft, including: (1) reading atmospheric pressure height data of the air craft and recording the time of the data; (2) calculating the flight level at which the air craft is located currently; (3) cutting off climbing and descending sequence section in level flight section to obtain the level flight sequence section of the cruise section; (4) reading GPS longitude and latitude data and recording the time of the data; (5) intercepting the GPS longitude and latitude sequence into direct flight sequence section and cutting off turning sequence section to obtain the direct flight sequence section of the cruise section of the air craft; (6) solving an intersection of the level flight sequence section and the direct flight sequence section over time; calculating the difference of atmospheric pressure height data with lower sample rate in the sequence duration of which meets the duration requirement to extract the cruise section of the flight path is extracted. The method realizes analysis and processing on the three dimensional position sequence of the air craft, effectively removes climbing, descending and turning sections and extracts the cruise section of the flight path.

The invention belongs to the field of water quality monitoring. The purpose of the invention is to provide a water area water quality abnormal point detecting and pre-warning method which has very high detection accuracy and degree of intelligence. According to the technical scheme, the water area water quality abnormal point detecting and pre-warning method comprises the following steps: (a) intelligent cruise; (b) monitoring data model analysis; (c) suspected abnormal data point check; and (d) abnormal data point on-site water sample collection. According to the method, an intelligent cruise ship is used as a carrier, a water quality abnormality analysis model serves as a software support, and human-computer interaction is performed based on the Internet-of-things technology. Water quality abnormal point detecting and pre-warning is truly realized.

The invention belongs to the field of flight mechanics, and particularly relates to a subsonic cruise voyage optimization design method for a fixed-wing aircraft. The method comprises the steps: obtaining 1, flight parameters of the fixed-wing aircraft, wherein the flight parameters comprise the maximum lift-drag ratio Kmax, the cruise lift coefficient Cy and the cruise Mach number M; 2, determining the engine thrust oil consumption rate Ce0 of a cruise entry point and the engine thrust oil consumption rate Ce1 of a cruise end point according to the flight parameters; 3, calculating the average oil consumption rate according to the engine thrust oil consumption rate Ce0 at the cruise entry point and the engine thrust oil consumption rate Ce1 at the cruise end point, and taking the averageoil consumption rate as the voyage calculation oil consumption rate Ce; and 4, calculating the variable-height cruise voyage L of the fixed-wing aircraft according to the voyage calculation oil consumption rate Ce. According to the optimization design method for the subsonic cruise voyage of the fixed-wing aircraft, a large amount of original data used by professional performance software or simulation software is not needed, calculation is rapid and simple, and the model argumentation precision requirement is met.

The invention relates to a lateral guidance command generation method for an aircraft flight tracking linear and circular path. A flight path of an aircraft gradually converges to a straight or arc path that is preset to pass, the vertical distance between the aircraft and the preset linear path or/and the arc path is controlled for getting shorter and shorter, moreover, the flight direction of the aircraft is controlled for converging to the linear direction or/and the arc tangential direction. The method is advantaged in that easy control is realized, the aircraft is not required to fly overa certain point at a certain time, so that requirements of the small-sized aircraft for effectively following the preset path under the premise of being vulnerable to external environment such as thewind during the cruise level flight can be met, technical supports are provided for completion of preset tasks for the cruise level flight of the small aircrafts, and system reliability and accuracyare improved.