Apparatus for evaluating the grade of rice grains
US5135114A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 1989 |
| Grant date | Aug 4, 1992 |
| Priority date | — |
| Expiry date | Aug 10, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S209/934
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An apparatus for evaluating the grade of rice grains includes a grain supply unit, vibrating troughs on which the rice grains run in their longitudinal posture, flow-down troughs having slits each opening to each of the flow-down troughs, a reflected light measuring unit having its light sources and its detecting element for detecting the amount of the light reflected from the rice grains, a transmitted light measuring unit having its light sources and its detecting element for detecting the amount of the light transmitted through the rice grains at the positions of the slits, and a calculation control unit for digitally calculating the values measured at the reflected light measuring unit and the transmitted light measuring unit for evaluating the rice grains into a plurality of grades. The light sources for reflection may be of visible light and the light source for transmission may be of infrared light. Also, it is possible to use a single unit, namely, a reflected and transmitted light measuring unit, having a reflected light detecting element and a transmitted light detecting element for measuring both the reflected light amount and the transmitted light amount from the rice g…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.