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CN-121970796-A - Food preservation method and system based on dynamic spectrum adjustment

CN121970796ACN 121970796 ACN121970796 ACN 121970796ACN-121970796-A

Abstract

The invention discloses a food preservation method and a system based on dynamic spectrum adjustment, comprising the following steps of S1, obtaining information, namely obtaining target information of food to be preserved and information of food storage environment, S2, carrying out spectrum decision, inputting the obtained information into a preset spectrum preservation regulation model, arranging a database in the spectrum preservation regulation model, storing preservation spectrum formulas of different foods in different environments, and selecting an adaptive preservation spectrum formula according to the obtained information by the spectrum preservation regulation model, wherein the preservation spectrum formula at least comprises a spectrum parameter combination of an ultraviolet light wave band and a visible light wave band. The invention has the advantages of automatic adaptation and adjustment, and solves the problems that the illumination of the current fresh food mainly focuses on color rendering property, the active fresh-keeping function is lacking, the existing ultraviolet sterilizing lamp is in a normally open mode, cannot be intelligently adjusted, can possibly cause negative influence on certain photosensitive foods, and has higher energy consumption.

Inventors

  • Ou Zhiri

Assignees

  • 深圳市东日照明有限公司

Dates

Publication Date
20260505
Application Date
20260112

Claims (11)

  1. 1. The food preservation method based on dynamic spectrum adjustment is characterized by comprising the following steps of: S1, acquiring information, namely acquiring target information of food to be preserved and information of food storage environment; S2, spectral decision is carried out, the obtained information is input into a preset spectral fresh-keeping regulation model, a database is built in the spectral fresh-keeping regulation model, the database stores fresh-keeping spectral formulas of different foods in different environments, the spectral fresh-keeping regulation model selects an adaptive fresh-keeping spectral formula according to the obtained information, and the fresh-keeping spectral formula at least comprises spectral parameter combinations of ultraviolet light wave bands and visible light wave bands; s3, dynamically adjusting, outputting a decision instruction according to the spectrum preservation regulation model, controlling the luminous parameters of each independent channel in the multispectral LED module in real time, outputting a dynamically-changing composite spectrum, and carrying out targeted preservation on the food.
  2. 2. The method for preserving foods based on dynamic spectrum adjustment of claim 1 wherein the target information in S1 is food type, the food type comprises meat, fruits and vegetables and cooked food, and the stored environmental information comprises temperature, humidity and current time through image recognition or manual input.
  3. 3. The method for preserving foods based on dynamic spectrum adjustment of claim 1, wherein the S2 preserving spectral formula is prepared by determining characteristic spectral band combinations of different food types according to different food types, determining parameters of ultraviolet light bands and visible light bands according to each characteristic spectral band combination, and storing the food types, the environmental parameters, the corresponding characteristic spectral band combinations and the optimized parameters in an associated mode to form a queriable spectral formula database.
  4. 4. The method for preserving foods based on dynamic spectrum adjustment as claimed in claim 3, wherein the method for determining the characteristic spectrum band combination comprises the following steps: (1) Aiming at the type of target food, the preservation effect of the combination of different wave bands is tested through a spectrum irradiation experiment; (2) Screening out the optimal characteristic spectrum band combination according to the fresh-keeping effect index; (3) And optimizing the intensity proportion and the irradiation time sequence parameter of each wave band in the optimal characteristic spectrum wave band combination.
  5. 5. The method for preserving food based on dynamic spectrum adjustment of claim 1, wherein after the spectrum preservation regulation and control model in S2 obtains food information and environment information, preprocessing the obtained original information data, integrating the processed data into a characteristic unit, and adapting a preservation spectrum formula according to information contained in the characteristic unit.
  6. 6. The method for preserving food based on dynamic spectrum adjustment of claim 1, wherein the preserving spectral formulas stored in the database in S2 are arranged, each preserving spectral formula is firstly adapted with a rule ID, the rule ID is used as a unique identifier for tracking and managing, and classification and ranking are performed according to the numerical value of each parameter in the preserving spectral formula.
  7. 7. The method for preserving food based on dynamic spectrum adjustment of claim 1, wherein in S2, when a preserving spectrum formula of food is selected, an information feature unit is used for adapting to a rule ID, each condition in each rule is read, a corresponding actual value is extracted from the feature unit and is compared with an expected value defined in the rule, a rule with the closest comparison value is preferentially selected, the error of the comparison value is +/-5%, once a successfully matched rule is found, the system immediately stops subsequent matching, corresponding illumination parameters are adjusted from a spectrum formula library, no matching is found in all rules, a default safety formula is automatically started, and the default safety formula is white light with high color rendering index.
  8. 8. The method for preserving food based on dynamic spectrum adjustment of claim 1, wherein the spectrum formula selected in S2 is sent to the LED driving controller as a decision instruction, and the LED driving controller generates corresponding PWM dimming signals or constant current driving signals according to each band parameter in the spectrum formula to respectively control the luminous parameters of the LED chips in different bands in the multispectral LED module.
  9. 9. The method for preserving food based on dynamic spectrum adjustment of claim 8, wherein when the rule is optimized, the historical preserving effect is evaluated periodically, if a certain rule fails to reach the expected preserving target in multiple applications, a rule correction mechanism is triggered, a condition threshold or an associated formula of the rule is adjusted by manual intervention, a learning model is trained by accumulated matching and effect data, a better rule suggestion is reversely generated, the rule suggestion is incorporated into a rule base after being audited by operation staff, and the accuracy, adaptability and preserving efficiency of spectrum decision are improved by executing, monitoring, evaluating and iterating a closed-loop mechanism to continuously optimize and improve the rule base.
  10. 10. Food preservation system based on dynamic spectrum adjustment, characterized by comprising: the sensing layer detects the temperature, humidity and time of the storage environment through the environment sensor, recognizes the food type through image recognition or manual input, and monitors the food fresh-keeping state through the smell sensor or the image sensor; the decision layer receives the detection information of the sensing layer, and adapts a fresh-keeping spectrum formula matched with the food through an allocation algorithm and a fresh-keeping spectrum formula database; the execution layer receives the decision instruction of the decision layer, controls the multispectral LED module according to the fresh-keeping spectrum formula and outputs a dynamically adjusted composite fresh-keeping spectrum; The multi-spectrum LED modules in the execution layer are arranged in regions of LED chips with different wavelengths, and physical or optical isolation structures are arranged between the light paths of the regions so as to realize the separate control of the independent channels in claim 1.
  11. 11. A method for preserving and lighting management of fresh goods, characterized in that the method as claimed in any one of claims 1-9 is adopted and comprises: in the business time period, the multispectral LED module is controlled to output high-color-rendering visible light preferentially; and in the non-business period, controlling the multispectral LED module to switch to a sterilization spectrum mainly comprising ultraviolet light.

Description

Food preservation method and system based on dynamic spectrum adjustment Technical Field The invention relates to the technical field of food preservation, in particular to a food preservation method and a system based on dynamic spectrum adjustment. Background The food fresh-keeping method based on dynamic spectrum regulation is a novel fresh-keeping technology which utilizes a light source with adjustable wavelength and intensity to adjust the illumination spectrum in real time according to the type, storage stage and environmental condition of food so as to delay food spoilage, inhibit microorganism growth and maintain nutrition and sensory quality. The core principle is that light with different wavelengths has different effects on biological and chemical processes in food, blue light has an antibacterial effect, red light is helpful for maintaining physiological activity of fruits and vegetables, ultraviolet light can be used for sterilizing with high efficiency, and white light can be used for increasing color development of food. It is generally believed in the prior art that the spoilage mechanisms of different foods are greatly different, and no general preservation spectrum scheme exists, for example, meat spoilage is mainly related to microbial growth, ultraviolet sterilization wave bands are required to be emphasized, fruit and vegetable preservation is mainly related to physiological metabolism, and specific wave bands in visible light are required to be emphasized, so that it is generally believed by those skilled in the art that different spectrum strategies must be adopted for different food types. The illumination of current fresh food mainly focuses on the color rendering, lacks initiative fresh-keeping function, and current ultraviolet germicidal lamp is mostly normally open mode moreover, can't intelligent regulation, probably causes negative effect to certain photosensitive food, and the energy consumption is higher, therefore an intelligent fresh-keeping scheme that can automatically regulated sterilization spectrum and intensity according to food type, environmental condition is urgently needed. Disclosure of Invention The invention aims to provide a food preservation method and a system based on dynamic spectrum adjustment, which have the advantage of automatic adaptation adjustment, and solve the problems that the illumination of the current fresh food mainly focuses on color rendering and lacks active preservation function, and the existing ultraviolet sterilizing lamp is in a normally open mode and cannot be intelligently adjusted, so that negative influence is possibly caused on certain photosensitive food and the energy consumption is higher. In order to achieve the purpose, the invention provides the following technical scheme that the food preservation method based on dynamic spectrum adjustment comprises the following steps: S1, acquiring information, namely acquiring target information of food to be preserved and information of food storage environment; S2, spectral decision is carried out, the obtained information is input into a preset spectral fresh-keeping regulation model, a database is built in the spectral fresh-keeping regulation model, the database stores fresh-keeping spectral formulas of different foods in different environments, the spectral fresh-keeping regulation model selects an adaptive fresh-keeping spectral formula according to the obtained information, and the fresh-keeping spectral formula at least comprises spectral parameter combinations of ultraviolet light wave bands and visible light wave bands; s3, dynamically adjusting, outputting a decision instruction according to the spectrum preservation regulation model, controlling the luminous parameters of each independent channel in the multispectral LED module in real time, outputting a dynamically-changing composite spectrum, and carrying out targeted preservation on the food. As a preferred food preservation method based on dynamic spectrum adjustment, the target information in S1 is a food type, the food type is identified by an image or manually input, the food type comprises meat, fruits and vegetables and cooked food, and the storage environment information comprises temperature, humidity and current time. As the food preservation method based on dynamic spectrum adjustment, preferably, the S2 preservation spectrum formula is prepared, characteristic spectrum wave band combinations of different food types are determined according to different food types, parameters of ultraviolet light wave bands and visible light wave bands of the characteristic spectrum wave band combinations are determined according to each characteristic spectrum wave band combination, and the food types, the environment parameters, the corresponding characteristic spectrum wave band combinations and the optimized parameters are stored in an associated mode to form a queryable spectrum formula database. As a preferred food pres