|発明の名称||METHOD FOR MEASURING NUMBER OF STALK BY INTERRUPTION OF INFRARED RAY|
PROBLEM TO BE SOLVED: To automatically measure the number of stalks in a crop community on a broadcasting (direct sowing) field of paddy rice (crop) with infrared rays.
SOLUTION: The measurement of the number of stalks is carried out by (1) using a plurality of infrared sensors each composed of a light projector and a light receiver, arranging the projectors on a horizontal line and the receivers on a straight line opposite to the projectors and estimating the number of the stalks of the measuring object range from the density of the crops shielding the receiver from the projector, (2) attaching a shielding plate to the infrared receiver to change the reaction on the crops standing between the infrared sensors by adjusting the sensitivity of the sensor and estimating the growth density of the crop from the difference of reaction on the standing crops of the same crop community by varied sensitivity and (3) varying the projecting direction of the infrared rays, integrating the light interruption information for various directions to improve the estimation accuracy of the number of stalks, utilizing the difference of reaction on the standing crop for each sensitivity level for improving the estimation accuracy of the stalk number and using the light interruption information for various projection directions and receiving sensitivities as the integrated algorism.
- 国立研究開発法人農業・食品産業技術総合研究機構 本部 連携普及部 連携広報センター
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