Grain condition prediction system, grain condition control system and grain bulk safety state judging method

Abstract

The invention provides a grain condition prediction system that comprises a plurality of temperature sensors, a storage unit, an analysis unit and an alarm unit, wherein the temperature sensors detect the temperature of all positions in a grain bulk; the storage unit is used for storing the current detection data and the historical detection data; the analysis unit comprises a calculation module and a temperature change rate comparison module; the calculation module calculates the following parameters at each detecting position: practical temperature change rate, prediction temperature, prediction temperature change rate and the temperature change rate difference between the practical temperature change rate and the prediction temperature change rate; the temperature change rate comparison module is used for comparing the temperature change rate difference at each detection position with the temperature change rate difference threshold of the detection position; the analysis unit alsocomprises a temperature comparison module that is used for comparing the currently practical detection temperature value with the temperature threshold at each detection position; and an alarm can begiven under the alarm condition of whether the temperature change rate difference is more than or equal to the temperature change rate difference threshold at the detection position and whether the currently practical detection temperature value is more than or equal to the temperature threshold at the detection position.

Description

technical field [0001] The invention relates to a grain storage safety theory method and engineering control application technology, in particular to a novel grain situation prediction system, a grain situation control system and a method for judging the safety state of grain piles. . Background technique [0002] Grain is an important agricultural product and an important resource related to the national economy and people's livelihood. In order to ensure my country's food security, a large number of large-scale grain reserve depots have been newly built since 1998. Therefore, a major demand has been put forward for the quality and safety of grain reserves. At present, the common method of monitoring the grain situation at home and abroad is to install a temperature sensor inside the grain pile in the granary, and judge the quality and safety of the grain by monitoring the temperature of the grain pile. The storage period of foreign grains is generally 3 to 6 months. Due ...

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Problems solved by technology

Although this can play a role in early warning, it also increases unnecessary false alarms.

Although these methods can guarantee the quality and safety of grain piles to a certain extent, they are difficult to achieve the purpose of early prevention because most of them are empirical means, and the blindness of prevention and control is relatively high.

[0004] Therefore, there is a need for a grain alarm system that can accurately alarm the grain condition of the granary by detecting the temperature of the grain pile, so as to solve the problem of grain storage quality control in large-scale granaries in my country

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