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Snow cover detection method and apparatus for greenhouse roof, and snow melting method and apparatus for greenhouse roof using the same
Snow cover detection method and apparatus for greenhouse roof, and snow melting method and apparatus for greenhouse roof using the same
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机译:温室屋顶的积雪检测方法和装置以及使用该方法的温室屋顶的融雪方法和装置
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摘要
PROBLEM TO BE SOLVED: To detect the presence of snow cover inexpensively, accurately, and extensively so as to make it possible to prevent collapse or the like of a greenhouse by snow cover.SOLUTION: In detecting snow cover of a greenhouse roof 14 in which temperature is managed by a heating device, the inner surface temperature (the surface temperature of a greenhouse side) of the greenhouse roof is measured by a temperature sensor 40, and when the fluctuation in the inner surface temperature of the greenhouse roof which is measured by the temperature sensor is within a given range, it is detected that there is snow cover on the greenhouse roof. When the temperature sensor is disposed at a plurality of positions and the number of the temperature sensors indicating a value within a given threshold range is not less than a given number, it can be detected that there is snow cover.SELECTED DRAWING: Figure 4
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