发明名称 |
Optical sensor for determining dry matter content of e.g. product, has LEDs distributed in circle to ensure homogeneous illumination of product, and photodetector for receiving spectrum backscattered directly by product |
摘要 |
<p>The sensor has a set of LEDs (2) for illuminating a product, and an electronic circuit for processing a spectrum backscattered by the product, where the LEDs are distributed in a circle to ensure homogeneous illumination of the product. A photodetector (3) is placed at a center of the circle to receive the spectrum backscattered directly by the product. The LEDs emit the same frequency modulated signal in a near infrared with a defined carrier frequency and a defined modulation frequency. An independent claim is also included for a method for determining dry matter content of a product by an optical sensor.</p> |
申请公布号 |
FR2982366(A1) |
申请公布日期 |
2013.05.10 |
申请号 |
FR20110060091 |
申请日期 |
2011.11.07 |
申请人 |
CENTRE NATIONAL DE MACHINISME AGRICOLE DU GENIE RURAL DES EAUX ET DES FORETS (CEMAGREF);SILIOS TECHNOLOGIES |
发明人 |
BENDOULA RYAD;ROGER JEAN-MICHEL;TISSERAND STEPHANE;HUBERT MARC |
分类号 |
G01N21/35 |
主分类号 |
G01N21/35 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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