Travel control device for unmanned vehicle
US5036935A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 5, 1990 |
| Grant date | Aug 6, 1991 |
| Priority date | — |
| Expiry date | Mar 5, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/7072
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A travel control device for an unmanned vehicle automatically travelling along a predetermined travel path. The travel control device comprises non-contact type and contact type obstacle sensors for detecting an obstacle in front of the unmanned vehicle, and the unmanned vehicle is stopped when an obstacle is detected. A working area is predetermined along the travel path, and entrance and exit marks are provided to indicate the working area. When the unmanned vehicle enters the working area, a detection of signals output by the non-contact type obstacle sensor is disabled, to avoid unnecessary stops in the specific area and maintain a smooth travel of the unmanned vehicle. Further, a time counter is provided for counting a time from when the unmanned vehicle is stopped to a time when the unmanned vehicle is restarted, and when the unmanned vehicle is restarted, the unmanned vehicle is caused to travel at a speed higher than a previous speed at which it was travelling before being stopped, to recover a delay time incurred by the stop.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.