Method for measuring displacement of large-range moving platform
US9182217B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 10, 2013 |
| Grant date | Nov 10, 2015 |
| Priority date | — |
| Expiry date | Apr 10, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/285
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for measuring displacement of a large-range moving platform, comprising: arranging multiple beams of first measuring light parallel to one another and generated by an optical path distribution device and a position sensitive detector array in a certain manner, to ensure that at least one beam of first measuring light is detected by the position sensitive detector array when a moving platform is at any position of a moving area; a detection head array capable of determining whether a light beam is shaded being used for auxiliary measurement of a position of the moving platform; and determining a position of the moving platform that corresponds to the first measuring light measured by the position sensitive detector array, to calculate displacement of the moving platform. The method effectively enlarges a measurement range of the position sensitive detector array, and implements measurement of long range displacement of the moving platform.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.