Elevator rope elongation measuring device
US10994968B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 27, 2019 |
| Grant date | May 4, 2021 |
| Priority date | — |
| Expiry date | Aug 27, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T7/60
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An elevator rope elongation measuring device provided with: a camera for photographing one or a plurality of elevator ropes R; and an image processing unit for image processing a photographed image output from the camera, wherein: the image processing unit detects an external form portion of the elevator rope R as a regular hill and valley shape T, converts a cyclic length of the hill and valley shape into actual dimensions and makes this a measured value, and finds a ratio of the measured value with respect to a standard value prescribed for the elevator rope as an elongation, therefore attaining the effect of making it unnecessary to have a preliminary installation of a sensor or marker to the rope, or preliminary creation of a database.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.