Video flowmeter
US4396943A · kind A · utility
Inventors
Key dates
| Filing date | Jun 10, 1981 |
| Grant date | Aug 2, 1983 |
| Priority date | — |
| Expiry date | Jun 10, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/704
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A video flowmeter is described that is capable of specifying flow nature and pattern and, at the same time, the quantitative value of the rate of volumetric flow. An image of a determinable volumetric region within a fluid (10) containing entrained particles (12) is formed and positioned by a rod optic lens assembly (31) on the raster area of a low-light level television camera (20). The particles (12) are illuminated by light transmitted through a bundle of glass fibers (32) surrounding the rod optic lens assembly (31). Only particle images having speeds on the raster area below the raster line scanning speed may be used to form a video picture which is displayed on a video screen (40). The flowmeter is calibrated so that the locus of positions of origin of the video picture gives a determination of the volumetric flow rate of the fluid (10).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.