Image acquisition device and measuring method for geometric parameters of specific developing area on concrete test blocks
US11391560B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 7, 2020 |
| Grant date | Jul 19, 2022 |
| Priority date | — |
| Expiry date | Jan 21, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30204
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image acquisition device and a measuring method for geometric parameters of a specific developing area on a concrete test block. In the image acquisition device, a digital camera is provided on a camera support; the camera support is provided with a screw bearing which is connected to a first stepping motor via a first coupling; the camera support is provided on a screw slideway which is connected to a second stepping motor via a second coupling; the screw slideway, the first stepping motor and the second stepping motor are provided on a rear platform of a L-shaped base; a spirit level and a controller are respectively provided at two sides of the rear platform of the L-shaped base; and a reference glass plate is arranged on a front raised platform of the L-shaped base.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.