公开(公告)号：US11009882B2

公开(公告)日：2021-05-18

申请号：US15869291

申请日：2018-01-12

Applicant: PIXART IMAGING INC.

Inventor： Kai-Shun Chen ,  Wei-Chung Wang

IPC: G05D1/02 ,  G06K9/00 ,  G06K9/20

Abstract: The disclosure is related to a method and a system for obstacle detection adapted to a self-guiding machine. The method is performed in the system including a controller for driving the system, a light emitter, a light sensor, an image processor and a central processor. The light emitter and the light sensor are set apart at a distance. When the light emitter emits an indicator light being projected onto a path the self-guiding machine travels toward, the light sensor senses the indicator light. An image containing the indicator light is generated. After analyzing the image, at least one feature of the indicator light being sensed can be obtained and used to obtain a spatial relationship between the self-guiding machine and an obstacle. The spatial relationship allows the system to determine if the self-guiding machine will collide with a wall or fall from a cliff.

公开(公告)号：US12099366B2

公开(公告)日：2024-09-24

申请号：US18140084

申请日：2023-04-27

Applicant: PIXART IMAGING INC.

Inventor： Kai-Shun Chen ,  Wei-Chung Wang

IPC: G05D1/00 ,  G06V10/141 ,  G06V20/58

CPC classification number: G05D1/0248 ,  G05D1/0214 ,  G05D1/0238 ,  G05D1/0246 ,  G06V10/141 ,  G06V20/58

Abstract: A system for obstacle detection adapted to a self-guiding machine is provided. The system includes a controller, a linear light source and a light sensor. The linear light source and the light sensor are set apart at a distance. When the linear light source emits an indicator light being a vertical linear light projected onto a path the self-guiding machine travels toward, the light sensor senses the indicator light. The vertical linear light is segmented into a first segment projected to a ground and a second segment projected to a floating obstacle when the self-guiding machine approaches the floating obstacle with a height from the ground and the indicator light is projected to the floating obstacle, in which the second segment of the light sensed by the light sensor is determined as the floating obstacle in front of the self-guiding machine.

公开(公告)号：US11669103B2

公开(公告)日：2023-06-06

申请号：US17227732

申请日：2021-04-12

Applicant: PIXART IMAGING INC.

Inventor： Kai-Shun Chen ,  Wei-Chung Wang

IPC: G05D1/02 ,  G06V10/141 ,  G06V20/58

CPC classification number: G05D1/0248 ,  G05D1/0214 ,  G05D1/0238 ,  G05D1/0246 ,  G06V10/141 ,  G06V20/58 ,  G05D2201/0203 ,  G05D2201/0207

Abstract: The disclosure is related to a system for obstacle detection adapted to a self-guiding machine. The system includes a controller for driving the system, a light emitter, and a light sensor. The light emitter and the light sensor are set apart at a distance. When the light emitter emits an indicator light being a vertical linear light projected onto a path the self-guiding machine travels toward, the light sensor senses the indicator light. The vertical linear light is segmented into a first segment projected to a ground and a second segment projected to a floating obstacle when the self-guiding machine approaches the floating obstacle with a height from the ground and the indicator light is projected to the floating obstacle, in which the second segment of the light sensed by the light sensor is determined as the floating obstacle in front of the self-guiding machine.