What is the application of carbon dioxide sensor in controlled atmosphere storage of grain?
The development of the country cannot be separated from the people, and the people's lives cannot be separated from the support of food. In the process of food formation, food is indispensable. Food is the main resource for the survival and development of a country, and it occupies a very important position in the development of the national economy. Food is not only a necessary condition for daily life, but also a necessary condition for production.
The so-called food for the people, only by solving the people's problems, the people can feel at ease. People's peace of mind is the cornerstone of the Taiping Heavenly Kingdom, so we must attach importance to food storage. A series of effective policies and measures have been adopted in the country. The comprehensive grain production capacity has been steadily improved. Grain harvests have been harvested year after year. Complete self-sufficiency in rations has been achieved, and the grain self-sufficiency rate has remained above 95%.
On the other hand, the quality of grain storage is closely related to national food security and people's quality of life. Food respiration consumes oxygen, decomposes organic matter, releases energy, and produces carbon dioxide and water. Therefore, the carbon dioxide content in the granary is the main factor affecting the quality of grain storage, which means that it is necessary to detect the carbon dioxide in the granary.
In the past, grain storage warehouses mainly relied on natural ventilation, with unsatisfactory results, mainly because the storage time was not long enough, and the nutrient composition and taste of the grain were easy to change. At present, "carbon dioxide gas conditioning technology" is commonly used for food storage.
The newly harvested grains have not yet fully matured, and will reach true physiological maturity during storage. During this period, the grain will absorb the oxygen in the plastic film tent through breathing, release carbon dioxide and gradually accumulate to a higher concentration, which is a simple biological oxygen reduction process. The purpose of the "carbon dioxide controlled atmosphere storage of grain" technology is to inject a certain concentration of carbon dioxide into a closed warehouse, inhibit grain respiration, delay the impact of grain quality aging, and achieve the purpose of safe and environmentally friendly grain storage.
In addition, high concentrations of carbon dioxide can also eliminate some pests. Experiments show that when the granary is airtight, the controlled atmosphere storage of grain can completely kill the adults, eggs, pupae and larvae of the insects in the silo. The main principle is that it effectively stimulates the respiration of pests, and the oxygen consumption in the body increases sharply until the oxygen runs out and death.
For the control of CO2 concentration in CO2 air conditioning technology, monitoring is carried out by a carbon dioxide sensor. The British GSS 4 series long-range infrared carbon dioxide sensor MINIR/ExplorIR-M has ultra-low power consumption (3.5mW) and The high-performance CO2 sensor is ideal for battery-powered products and portable equipment. In addition, there are low-power-consumption long-range infrared carbon dioxide sensor COZIR-W/ExplorIR-W and high-speed response infrared carbon dioxide sensor SprintIR, which can also be used in food storage.
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