Positional deviation detecting device for a mobile body and position correcting apparatus for a working machine mounted on a mobile body
US6041274A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 21, 1998 |
| Grant date | Mar 21, 2000 |
| Priority date | — |
| Expiry date | Apr 21, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D1/0234
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A pickup sensor for picking up an image on a floor is installed on a mobile body with a working machine mounted thereon in order to correct for the position deviation of a working machine due to possible deviation in the stop position of a mobile body to always ensure accurate working without increasing the working time of the overall system at the time of stopping the mobile body at a predetermined position and allowing said working machine to perform predetermined operation according to previously given teaching data. At the time the teaching data is given, the pickup sensor picks up an image (reference picked image) including a regular pattern and a predetermined identification mark formed on a floor. At the time the working machine works, the pickup sensor also picks up an image (on-pause picked image) on the floor surface at the stop position. The reference picked image is compared with the on-pause picked image based on the position of the identification mark, and the teaching data of the working machine is corrected on the basis of the comparison result. This correction does not involve the operation of the movable portions of the working machine or the like and can be accom…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.