Abstract: An article conveyance apparatus including a front imaging device, a left-side imaging device, and a right-side imaging device. The front imaging device determines the presence or absence of an obstacle ahead of the imaging device and calculates a distance from the obstacle based on a comparison between images captured by a plurality of cameras. In a transition region from a linear section to a curved section, the left-side imaging device and the right-side imaging device capture images ahead of the left or the right side and determine the presence or absence of an obstacle ahead of the left or the right side. If a distance from a front obstacle is at most a predetermined threshold value and if it is determined that an obstacle is present ahead of the left or the right side, a controller avoids a collision between the article conveyance apparatus and the obstacle.

Abstract: In an overhead conveyance vehicle that travels along a rail serving as a conveyance track mounted on a ceiling and conveys a target magazine along the rail, when an elevating unit holding the magazine is hoisted or lowered between a conveyance position and a transfer position, a controller for controlling the operation of the overhead conveyance vehicle determines, based on an image captured by a camera, the presence or absence of an obstacle in an imaging range captured by the camera.

Abstract: An article conveyance apparatus including a front imaging device, a left-side imaging device, and a right-side imaging device. The front imaging device determines the presence or absence of an obstacle ahead of the imaging device and calculates a distance from the obstacle based on a comparison between images captured by a plurality of cameras. In a transition region from a linear section to a curved section, the left-side imaging device and the right-side imaging device capture images ahead of the left or the right side and determine the presence or absence of an obstacle ahead of the left or the right side. If a distance from a front obstacle is at most a predetermined threshold value and if it is determined that an obstacle is present ahead of the left or the right side, a controller avoids a collision between the article conveyance apparatus and the obstacle.

Abstract: In an overhead conveyance vehicle that travels along a rail serving as a conveyance track mounted on a ceiling and conveys a target magazine along the rail, when an elevating unit holding the magazine is hoisted or lowered between a conveyance position and a transfer position, a controller for controlling the operation of the overhead conveyance vehicle determines, based on an image captured by a camera, the presence or absence of an obstacle in an imaging range captured by the camera.