Method and apparatus for locating center of reference pulse in a measurement system
US4628469A · kind A · utility
22Cited by
12References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 17, 1984 |
| Grant date | Dec 9, 1986 |
| Priority date | — |
| Expiry date | Oct 17, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B11/25
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus are disclosed for determining the spatial coordinates of a workpiece including: a planar light source for illuminating the workpiece; an electronic imaging device adapted to view the intersection of the planar light and the workpiece; pulse signals including pulses representative of said intersections; and a device for determining the centroid of the pulse by integrating the pulse signal over a selected interval including the pulse, integrating the result of the first integration in like manner and dividing the result of the second integration by the result of the first integration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.