Grain grade discrimination device and method for receiving light from grains of the device

Abstract

The present invention relates to a grain grade discrimination device and a method for receiving light from grains of the device. In the grain grade discriminating device, the optical part is two groups of light sources that are alternately turned on and off, and has a first light source that irradiates light from one side of the grain, and a second light source that irradiates light from the other side of the grain, The sensor includes: a first light receiving part, which sets the exposure time according to the timing of switching the lighting and extinguishing of each light source, and receives the reflected light from one side of the grain when the first light source is turned on, and the second light source Receive the transmitted light from one side of the grain during lighting; and the second light receiving part, which regards the continuous and alternate lighting of each light source as a pair, and sets the exposure time corresponding to the timing at which each light source is turned on for a predetermined number of times, When the first light source is turned on and when the second light source is turned on, the reflected light and transmitted light from the side of the grain are continuously received, and colored grains can be discriminated based on the light reception signal received by the sensor from the side of the grain. .

Description

technical field [0001] The present invention relates to a grain grade discriminating device for discriminating grain grades, and a light receiving method of reflected light and / or transmitted light from grains of the device. Background technique [0002] At present, a kind of grain grade discrimination device is known (for example, refer to Japanese Patent Application Laid-Open 2003-42963), that is, to irradiate the grain with light, receive the reflected light and / or transmitted light from the grain, and determine the grain level according to the received light signal. Determine the grade of the grain. [0003] The grain grade discrimination device described in Japanese Patent Application Laid-Open No. 2003-42963 includes: a transfer unit that transfers grains; the emitted light; and a grade discriminating unit that compares the received light signal received by the optical detection unit with a preset threshold value and discriminates the grade of the above-mentioned grai...

AI Technical Summary

Problems solved by technology

[0015] Therefore, the light-receiving signal transmitted from the side light-receiving means to the above-mentioned grade judging unit has the following problems, that is, for example, in the transmitted light, it is used to distinguish the colored part from the cloudy part, and in the reflected light, it is used to distinguish the colored part from the germ. The amount of light in the shaded area is insufficient, so it cannot be used for grade judgment of colored grains, etc.

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