Intelligent control method of grain warehousing ventilation

Abstract

The invention discloses an intelligent control method for grain storage ventilation, which relates to the technical field of grain storage ventilation temperature control and humidity adjustment. The present invention adopts an intelligent control system composed of a touch screen and a PLC programmable controller, which integrates technologies such as electronic detection, intelligent analysis, automatic control and mechanical ventilation of grain storage, and detects the temperature inside and outside the grain pile in real time through the electronic grain detection technology. Humidity and other ventilation parameters are quickly analyzed and judged by intelligent analysis software. When the storage grain ventilation conditions are met, the automatic control equipment will open the ventilation facilities and start ventilation. During the ventilation process, the system regularly detects the changes in ventilation parameters such as temperature and humidity inside and outside the grain pile. When it is not suitable for ventilation, the system will automatically close the ventilation facilities and stop ventilation. The invention makes it possible to realize accurate control of grain surface temperature and grain pile temperature in the most simplified control mode, meet the requirements of granary ventilation, and achieve obvious effect of temperature control and energy saving.

Description

technical field [0001] The invention relates to the technical field of grain storage ventilation, temperature control and humidity regulation, and in particular to an intelligent control method for grain storage ventilation. Background technique [0002] Ventilated grain storage technology, that is, in the environment where the seasons change and the temperature changes, some ventilation mechanical facilities are used to ventilate with the external environment in a timely manner to obtain a relatively stable temperature and humidity artificial environment that is conducive to grain storage. It can reduce grain temperature, control grain moisture, increase grain storage stability, and has been widely used in grain storage in my country. [0003] According to the local weather forecast and the temperature of the grain pile, the granary custodians will carry out the ventilation and cooling of the conventional grain storage machinery; and each ventilation needs to go to the gran...

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Problems solved by technology

[0003] According to the local weather forecast and grain pile temperature, the granary custodians will carry out conventional mechanical ventilation and cooling for grain storage; each ventilation needs to go to the granary site to manually open the ventilation door and ventilator, such as figure 1 and figure 2 As shown, each granary has several windows, vents, ventilators, axial flow fans and air conditioners, and the largest grain depot in my country has a radius of several kilometers and dozens of warehouses. This artificial mechanical ventilation operated by experience , not only need to spend a lot of manpower to achieve multiple data collection, analysis and judgment, but also need to spend a lot of time to open or close the ventilation facilities at the granary site, this kind of efficiency is low and labor time is long, and manual collection, experience judgment and If the ventilation mode is operated laggingly, it is inevitable that the ventilation process will be dominated by low-efficiency ventilation, sometimes ineffective ventilation, and even harmful ventilation that will increase the temperature of the stored grain.

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