Device and a method of sensing characteristics of a food material and a machine and a method of brewing coffee having a wave source with wavelength range comprising visible band and near infrared band
US9804081B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 2014 |
| Grant date | Oct 31, 2017 |
| Priority date | — |
| Expiry date | Oct 19, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/068
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device and a method of sensing characteristics of a food material and a machine and a method of brewing coffee. The device comprises: a wave source (20) configured for emitting waves to said food material (22), with the wavelength range of said waves comprising a selected near infrared band neighboring a visible band; a detector (26), configured for detecting intensities of the waves reflected by said food material; and an analysis module (28), configured for determining said characteristics according to the detected intensity of the reflected waves. Preferably, the food material comprises coffee powder, and the characteristics comprise at least any one of: color of the coffee powder (corresponding to the roasting degree of coffee powder); and grind fineness of the coffee powder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.