Position-determination system for an elevator
US10577220B2 · kind B2 · utility
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15Claims
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Key dates
| Filing date | Dec 14, 2015 |
| Grant date | Mar 3, 2020 |
| Priority date | — |
| Expiry date | Dec 14, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/10048
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A position-determination system for an elevator uses a camera arranged on an elevator car, which camera has a sensor with a defined number of light-sensitive pixels for generating image data of a surface structure of hoistway material arranged along a travel path of the elevator car. An analysis unit, based on the image data, determines a position and/or velocity of the elevator car. The position-determination system recognizes a reference pattern with a specified dimension which lies in a capturing range of the camera, wherein, based on the reference pattern, the analysis unit performs a scaling of the image data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.