Optical signal technology physical method for preserving vegetables and fruits and optical signal generating device

Abstract

The invention relates to an optical signal technology physical method for preserving vegetables and fruits and an optical signal generating device. By adopting a computer programmable pulse scanning signal generator, the invention controls a light-emitting device with a red, green and blue light source pack to generate a pulse-type optical signal or an optical signal of a pulse-type periodical scanning combined spectrum so as to illuminate fresh vegetables and fruits stored in a storage device under a room-temperature storage condition or a temperature and moisture control condition. Under the physical environmental condition of an artificial optical signal, the illuminated fresh vegetables and fruits obtain photon energy needed for an optical reaction in photosynthesis in an optical signal illumination environment with periodical brightness change so that cell tissues recover metabolism and maintain the slow operation of metabolism and growth inertia; through controlling the optical signal of a periodical pulse spectrum or a periodical pulse scanning spectrum or a periodical pulse scanning combined spectrum, and the illuminance, the pulse period and the combined scanning mode of a visible spectrum optical signal emitted by the red, green and blue light source pack are controllable so as to achieve the aims of controlling the slow growth process of the harvested vegetables and fruits under the room-temperature condition or the temperature and moisture control condition, effectively prolonging the fresh state of the harvested vegetables and fruits by the slow metabolism operation of the preserved vegetables and fruits, keeping the freshness of the stored vegetables and fruits and prolonging the preservation time.

Description

technical field [0001] The invention relates to an optical signal technical physical method and an optical signal generating device, in particular to an optical signal technical physical method and an optical signal generating device for keeping vegetables and fruits fresh. Background technique [0002] The preservation and processing of agricultural products is the continuation of agricultural production and the "secondary industry economy" in the process of agricultural reproduction. All countries in the world put the preservation, storage and processing of vegetables and fruits after agricultural production at the forefront of agriculture. Vegetables and fruits are fresh food, and they are perishable after harvesting. In order to prolong the preservation period, refrigeration is one of the main fresh-keeping storage forms of modern vegetables and fruits. It can be stored in seasons with high temperatures to ensure the annual supply of fruits. Low-temperature refrigeration...

AI Technical Summary

Problems solved by technology

Therefore, there are historical problems of high power consumption in cold storage and preservation, as well as the difficulty and disadvantages of preventing chilling and freezing damage of vegetables and fruits in the process of cold storage and preservation.

At present, it is explored that under room temperature conditions, after harvesting, vegetables and fruits can be regulated by light signals to restore metabolism and maintain slow growth. The use of light signal technology and physical methods for the purpose of fresh-keeping and storage of vegetables and fruits has not been reported at home and abroad.

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