Sensor device and position determination process and their use for the control of an insertion robot
US5598270A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 1994 |
| Grant date | Jan 28, 1997 |
| Priority date | — |
| Expiry date | Jun 6, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B11/002
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The sensor device includes a planar code carrier on one object, and on another object, a scanning device for an angle of view for determining a viewing direction lying therein, and also a computing circuit. A photodetector detects an illumination density during the course of the scanning of the angle of view according to the direction of light incidence. On the code carrier there is arranged a rectangular code field with its center line parallel to the scanning plane. The code field includes at least two rectangular positioning fields and a rectangular interfield lying in between. The positioning fields contain positional information on the objects which can be evaluated by the scanning device. In at least one interfield, the code includes at least one boundary line obliquely intersecting the center line, the scanning of which boundary line produces a distinct variation of the illumination density in dependence on the direction of light incidence, which corresponds to a viewing direction to be established. The interfield may be subdivided by a diagonal line into two optically identical interfield regions or by a boundary line diagonally into two optically different interfield regio…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.