Grain drying method based on Kalman filtering

Abstract

The invention provides a grain drying method based on Kalman filtering.According to the method, the grain flow speed is accurately controlled by real-time detection of the grain moisture content and environment temperature parameters, measurement parameters are corrected in real time, Kalman filtering is adopted for conducting prediction-correction on measurement results of a near-infrared grain analyzer, a BP neural network is adopted for training, the influences of environmental factors on the detection of the grain moisture content are weakened, and accurate control over the drying period and the drying results is achieved.

Description

technical field [0001] The invention relates to a grain drying method, in particular to a grain drying method based on Kalman filtering. Background technique [0002] Drying is one of the most important processing stages in grain production. The so-called drying is the process of removing moisture from the material by means of heat supply, which is a complex heat and mass transfer process. In order to ensure the good quality of grain in drying operation, appropriate drying conditions and equipment must be selected to minimize the adverse effects of drying on grain quality. In the prior art, most grain dryers are tower-type grain dryers. The grain flow channel of the tower-type grain dryer is a vertical grain channel made of two layers of vertical nets. The grain forms a layer of grain wall in the channel. The grain moves from top to bottom in the channel; the heating device is a coal-fired hot air stove, which can output hot air. When drying, let the hot air blow through ...

AI Technical Summary

Problems solved by technology

When this kind of grain dryer is drying, the thermal efficiency of the whole machine is low, the energy consumption is large, and the heating temperature is not easy to control

In summary, there are certain problems in the current infrared drying equipment and methods for grain, such as flammability during the drying process, which endangers food safety, uneven moisture content of the grain after drying, poor infrared coating effect, and single radiation wavelength of the infrared radiator. The drying efficiency is low, the processing capacity is generally small, and the energy consumption is large, etc.

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