Grain temperature-based granary internal circulation temperature control method

Abstract

The invention discloses a grain temperature-based granary internal circulation temperature control method, comprising the steps of I, selecting grain temperature measurement data of a granary within aperiod of time, and cleaning the grain temperature measurement data; II, establishing a three-dimensional data distribution map about the grain temperature data according to granary information, thenumber of sensors and the layout mode of the sensors; III, calculating an autocorrelation coefficient of each temperature measuring plane within adjacent periods of time; IV, drawing a temperature field cloud picture; V, calculating a heating area ratio and determining the position of a heating area; and VI, cooling according to the heating area ratio and the position of a heating spot until the heating area ratio is smaller than a heating area threshold. Quick precise judgement of an internal circulation area is achieved through historical grain temperature data detected by the sensors, by calculating a correlation coefficient of grain temperature matrixes of each tier of grain within two adjacent weeks, adding up heating layer high temperature variation area and granary cold core area, diagnosing a high temperature area, and drawing the temperature field cloud map.

Description

technical field [0001] The invention relates to the technical field of temperature control of stored grain, in particular to a grain temperature-based method for controlling the temperature of internal circulation in a granary. Background technique [0002] As the main technology for temperature control of summer grain storage in Northeast China, the internal circulation technology blows the "cold core" stored in the granary in winter to the top layer through the bottom low-power fan, reducing the temperature of the warehouse and the surface layer of grain, and realizing low-temperature storage in summer. Grain storage in summer is prone to heating, condensation, mildew and other food storage safety issues that affect the quality of stored grain, which will bring greater economic losses to the country and society. The current granary mostly adopts temperature measurement sensors above the surface of the grain and manual temperature detection to detect the critical temperatur...

AI Technical Summary

Problems solved by technology

Although the patent detects and judges the temperature of the grain on the upper layer of the grain pile, it cannot intuitively and quickly display the heating area, and precisely regulate the inner circulation fan in the heating area

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