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3867 results about "Route planning" patented technology

Traffic management system for a passageway environment

The present invention provides a system for coordinating multiple vehicles in a passageway environment (e.g., in underground mines). The system includes methods and apparatus for determining the global position and orientation of a vehicle in said passageway environment, and methods for planning routes and monitoring the travels of multiple vehicles in said passageway environment. A global position and orientation estimation system employs one or more odometric sensors and one or more range sensing devices. It works in three basic steps. In the first step, it records and processes sensor data that is descriptive of the passageway environment by moving the system through said passageway environment. In the second step, it generates a globally consistent map of said passageway environment. Finally, real-time localization is provided by employing odometric sensors and range sensing devices to determine the system's global position and orientation with respect to said globally consistent map, both initially and as it travels through the passageway environment. A route planning method accepts higher-level goals for a set of multiple vehicles in said passageway environment and generates a route plan for each vehicle that minimizes the travel time for the group of vehicles, while at the same time avoiding collisions between vehicles. Route plans are sent to the vehicles for implementation and a monitoring method tracks the global positions and orientations of the vehicles and ensures that both safety and efficiency are maintained.
Owner:MACDONALD DETTWILER & ASSOC INC

Dispatching and route-planning method for multiple AGVs used for material transportation in factory

PendingCN107727099AMake up for the shortcomings of not being able to get the optimal pathOptimal planning pathNavigational calculation instrumentsAlgorithmPlanning approach
The invention relates to a dispatching and route-planning method for multiple AGVs used for material transportation in a factory. The method comprises the following steps: (1) modeling material transportation scenes in a factory, including the travelling routes of AGVs, AGV charging points, loading and unloading points and standby zones for AGVs; (2) storing allocated tasks in a queue; (3) findingout one AGV closest to a current-task issuing site from a set of available AGVs; (4) calculating the shortest route from a current-task start point and a current-task stop point by using an A* algorithm; and (5) calling a time-window algorithm for maintenance of a time-window vector table of the shortest route obtained in the step (4). Compared with traditional A* algorithms, a heuristic functionin the A* algorithm used in the invention takes the traveling cost and turning cost of the AGVs on roads in a workshop into consideration, the time-window vector table of each route section is maintained, and whether conflicts exist in planned routes is determined by judging whether superposition exists; so the problems of collision conflicts, deadlock and the like of AGV route planning are effectively overcome.
Owner:SHANDONG UNIV

Environment recognizing device, environment recognizing method, route planning device, route planning method and robot

An environment recognizing device and an environment recognizing method can draw an environment map for judging if it is possible to move a region where one or more than one steps are found above or below a floor, a route planning device and a route planning method that can appropriately plan a moving route, using such an environment map and a robot equipped with such an environment recognizing device and a route planning device. The robot comprises an environment recognizing section including a plurality of plane extracting section 401 adapted to compute plane parameters from a parallax image or a distance image and extract a plurality of planes including the floor surface, an obstacle recognizing section 402 adapted to recognize obstacles on the plurality of planes including the floor surface and an environment map updating section 403 adapted to draw an environment map (obstacle map) for each of the planes on the basis of the result of recognition of the obstacle recognizing section 402 and update the existing environment maps and a route planning section 404 adapted to plan a route on the basis of the environment maps. The route planning section 404 selects a plane as route coordinate when an obstacle is found on it in the environment map of the floor surface but not found in the environment map of the plane.
Owner:SONY CORP

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

Improved VFH algorithm-based positioning and obstacle avoidance method and robot

ActiveCN103926925ASolve the obstacle avoidance path planning problemPosition/course control in two dimensionsLaser rangingHome environment
The invention provides an improved VFH algorithm-based positioning and obstacle avoidance method and robot. According to the improved VFH algorithm-based positioning and obstacle avoidance method and robot, on the basis of an improved vector field histogram method and a scan matching algorithm, environmental information is acquired by the adoption of a laser range-finder sensor, and the pose error brought by speedometer is amended by the adoption of the polar coordinate scan matching algorithm. After robot positioning is finished, environmental information is rasterized, an obstacle is expanded according to the relationship between the robot and the obstacle and considering the sensing uncertainty of a movable robot and the real size of the robot, an original polar coordinate histogram is built, the free walking area and the obstacle avoidance area are acquired, a binary polar coordinate histogram is acquired through the definition of two threshold values, a shielding polar coordinate histogram is built through estimating the movement trail of the movable robot, and finally, the cost function is introduced to determine the best movement direction of the robot so as to solve the problem of shielding route planning of the movable robot in a home environment.
Owner:江苏久祥汽车电器集团有限公司
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