Abstract: An automatic travel system for a work vehicle has an automatic travel control unit that causes a work vehicle, which is provided with an obstacle detection unit that detects obstacles, to travel automatically. The obstacle detection unit includes imaging units and active sensors. When the obstacle detection unit detects an obstacle based on information from the imaging units, and the separation distance from the obstacle is acquired based on information from the active sensors, the automatic travel control unit executes a first collision avoidance control for avoiding a collision between the work vehicle and the obstacle, on the basis of the separation distance from the obstacle acquired based on the information from the active sensors.

Abstract: The present invention is provided with a path generation unit that generates an operation path for each of a plurality of operation regions, and an automatic travel control unit that causes an operation vehicle to travel automatically along the operation path generated by the path generation unit. The path generation unit is configured to be able to generate a movement path that connects different operation regions by causing the operation vehicle to travel outside the operation regions. The automatic travel control unit is configured to temporarily stop the operation vehicle before switching the traveling path on which the operation vehicle travels automatically from a path inside the operation regions to a path outside the operation regions, and in response to the temporary stop state being terminated, cause the operation vehicle to travel automatically by switching the traveling path to a path outside the operation regions.

Abstract: The obstacle detection system for a work vehicle enables an obstacle, present in the surroundings of a work vehicle, to be accurately detected. This obstacle detection system for a work vehicle has: a plurality of imaging devices that take images of the surroundings of a work vehicle; and an image processing device that performs, according to a time division system, an obstacle identification process for identifying an obstacle on the basis of the images from the plurality of imaging devices. The image processing device changes a to-be-processed cycle per unit time for the plurality of imaging devices in the time division system in accordance with the vehicle speed and the traveling direction of the work vehicle.

Abstract: To suppress an increase in the range in which obstacle detection is not executable and prevent the false detection of a movable part as an obstacle, the present invention includes: distance sensors 101, 102 provided in a work vehicle 1 and capable of measuring the distance to a measurement target; an obstacle control unit that executes collision avoidance control upon detecting a measurement target within a predetermined distance as an obstacle based on measurement results from the distance sensors 101, 102; a masking range setting unit that sets a masking range in which the detection of obstacles is not executed and the execution of the collision avoidance control is restricted; and a range-of-movement acquisition unit that acquires the range of movement of movable parts 5, 12 provided in the work vehicle 1, wherein the masking range setting unit sets the masking range corresponding to the range of movement.

Abstract: Provided is an obstacle detection system for a work vehicle, with which the reduction of costs or labor required for preparatory work can be achieved. In an obstacle detection system for a work vehicle, three left-side and three right-side ultrasonic sensors 103A-103C, 104A-104C are disposed on the left and right sides of a work vehicle 1, respectively, and the measurement ranges Na-Nc thereof are continuous in the front and rear direction.