Grain pile dewing early-warning, prevention and control system and method based on temperature field and humidity field coupling

Abstract

The invention discloses a grain pile dewing early-warning, prevention and control system and method based on temperature field and humidity field coupling. The early-warning, prevention and control system comprises a temperature measurement senor array, an analyzing and early-warning device and a ventilation control device which are sequentially and electrically connected. The temperature measurement senor array comprises a plurality of regularly arranged temperature sensors, the temperature sensors are arranged at different positions in a grain pile, and each temperature sensor is located at an actual measurement point in the grain pile. The analyzing and early-warning device comprises a temperature field building module, a humidity field building module and a coupling module, and the temperature field building module is sequentially and electrically connected with the humidity field building module and the coupling module. The early-warning, prevention and control system and method can predict the time when dewing may occur in the grain pile in several days or tens of days and the positions where dewing may occur in the grain pile in several days or tens of days, thereby avoiding mildew losses, lowering expenditure and guaranteeing the quantity and quality safety of stored grain.

Description

technical field [0001] The invention relates to the technical fields of grain storage safety theory and engineering control, in particular to a dew condensation early warning and control system and method for grain piles based on temperature and humidity field coupling. Background technique [0002] Food security is related to national security. Since 1998, a number of large-scale grain reserves have been newly built in my country. The research team headed by Wu Zidan of the National Grain Administration Academy of Sciences proposed a new technology of "four-in-one" grain storage and popularized it, making my country's comprehensive grain storage technology a step up. Condensation in grain piles is one of the important hidden dangers that threaten food security. [0003] Grain pile condensation means that the water vapor in the grain pile reaches a saturated state, and condensation water begins to appear on the surface of grain grains, equipment, and warehouse walls. When t...

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Problems solved by technology

But this requires the management personnel to have enough experience, otherwise improper ventilation will not only increase the cost, but also may lead to excessive moisture loss; and untimely ventilation often causes serious mildew loss

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