Controlled atmosphere storage system and method

Abstract

The invention discloses an air-conditioned storage system and method. The air-conditioned storage system comprises pretreatment equipment used for treating Chinese herbal medicines before warehousing, an air-conditioned storage house used for storing the Chinese herbal medicines for a long time and environment regulation and control equipment used for controlling environment parameters such as temperature and humidity in the air-conditioned storage house. The pretreatment equipment comprises a pretreatment module used for performing impurity removal, drying and preliminary screening on harvested Chinese herbal medicines; the sorting module is used for carrying out quality identification and grading on the Chinese herbal medicines treated by the pretreatment module; the packaging module is used for carrying out modified atmosphere packaging on the sorted Chinese herbal medicines needing to be precooled; and the pre-cooling module is used for temporarily refrigerating the Chinese herbal medicines subjected to modified atmosphere packaging. According to the device, the upwind type conveying suspension bed, the vibrating screen, the low-temperature conveying and drying structure, the visual sorting structure, the pre-cooling goods shelf structure, the near-infrared detection structure and the like are integrally designed, so that continuity, automation and equipment modularization of Chinese herbal medicine from post-harvest treatment to controlled atmosphere storage are achieved.

Description

Technical Field

[0001] This invention relates to the field of storage equipment technology, and particularly to controlled atmosphere storage systems and methods. Background Technology

[0002] In the traditional storage of Chinese herbal medicines, especially high-value herbs (such as ginseng, cordyceps, and ganoderma), their extreme sensitivity to environmental conditions such as temperature, humidity, gas composition, and microbial control makes it difficult to effectively maintain their efficacy and quality using traditional room temperature or ordinary refrigeration methods. While some controlled atmosphere storage facilities are currently used for herbal medicine storage, the pre-treatment processes are fragmented, lack automation, and are inefficient. Human intervention and environmental disturbances increase the risk of contamination during processing. The lack of real-time quality monitoring and dynamic feedback mechanisms makes it difficult to promptly detect and address problems during storage, thus increasing the risk of herb loss and quality degradation. Furthermore, some Chinese herbal medicines have different requirements for environmental conditions and the content of relevant components during storage and removal from storage, necessitating specific environmental controls before removal, which current technologies cannot achieve. Summary of the Invention

[0003] To address at least one of the aforementioned technical problems, this invention provides a controlled atmosphere storage system that integrates multiple processing steps such as impurity removal, drying, sorting, precooling, packaging, and testing into a single system. This system enables continuous, efficient, and controllable processing, reduces human intervention and environmental interference, and lowers the risk of contamination during the processing.

[0004] On the other hand, the present invention also proposes a controlled atmosphere storage method for the system, which adjusts the controlled atmosphere parameters in the storage space based on the detection data of changes in the quality of Chinese herbal medicines; determines the quality of the Chinese herbal medicines within a preset time before they leave the controlled atmosphere storage space, and adjusts the controlled atmosphere parameters according to the determination results so that the quality of the Chinese herbal medicines meets the preset standards for leaving the storage space.

[0005] The technical solution adopted in this invention is to design a controlled atmosphere storage system, including pretreatment equipment for processing Chinese herbal medicines before storage, a controlled atmosphere storage warehouse for long-term storage of Chinese herbal medicines, and environmental control equipment for controlling environmental parameters such as temperature and humidity within the controlled atmosphere storage warehouse; the pretreatment equipment includes:

[0006] The pretreatment module is used to remove impurities, dry, and perform preliminary screening of Chinese herbal medicines;

[0007] The sorting module is used to identify and grade the Chinese herbal medicines after they have been processed by the preprocessing module.

[0008] The packaging module is used for modified atmosphere packaging of Chinese herbal medicines that need to be pre-cooled after sorting.

[0009] a pre-cooling module for temporarily refrigerating the Chinese herbal medicine in the modified atmosphere packaging;

[0010] a storage module for storing the sorted Chinese herbal medicine that needs to be stored in the modified atmosphere;

[0011] a detection module for detecting specific components of the Chinese herbal medicine stored by the storage module;

[0012] Each module is connected by a conveying device and is controlled by a control unit.

[0013] A method for the modified atmosphere storage system, the Chinese herbal medicine space is airtight isolated, and the atmosphere of the Chinese herbal medicine space is adjusted to a target modified atmosphere state by a modified atmosphere device; detection data reflecting the quality change of the Chinese herbal medicine is periodically obtained during the storage process; the detection data is compared with the reference data of the quality, and at least one modified atmosphere parameter in the storage space is adjusted when the quality change is detected to exceed a preset threshold; the quality of the Chinese herbal medicine is determined within a preset time before the Chinese herbal medicine leaves the modified atmosphere storage space, and at least one modified atmosphere parameter in the storage space is adjusted according to the determination result so that the quality of the Chinese herbal medicine meets the preset standard for leaving the storage space.

[0014] In some embodiments, the Chinese herbal medicine is Cordyceps sinensis, and once adenosine detection is performed on the Cordyceps sinensis within 30 days before the Cordyceps sinensis leaves the Chinese herbal medicine space, if the adenosine retention rate is > 90.5%, the Chinese herbal medicine space is warmed at a preset warming rate within 7 days before the Cordyceps sinensis leaves the Chinese herbal medicine space, and if the adenosine retention rate is < 90.5%, the carbon dioxide concentration is increased by 0.3% within 24 hours, and the Cordyceps sinensis is stored for another 30 days.

[0015] In some embodiments, the preset warming rate is ≦ 1℃ / d, and the maximum temperature does not exceed 7℃, and the humidity of the Chinese herbal medicine space is maintained at 50%.

[0016] In some embodiments, the Chinese herbal medicine is Cordyceps sinensis, and after the Cordyceps sinensis enters the Chinese herbal medicine space, the oxygen concentration of the storage environment decreases at a rate of 0.5% per hour until the oxygen concentration reaches 1.5%, and then enters the modified atmosphere storage stage, and the storage environment control of the modified atmosphere storage stage is: oxygen concentration 1.3% to 1.7%, carbon dioxide concentration 3.7% to 4.3%, temperature 2.8℃ to 3.2℃, and relative humidity 48% to 52%.

[0017] In some embodiments, the storage environment control of the modified atmosphere storage stage is: oxygen concentration 1.5%, carbon dioxide concentration 4%, temperature 3℃, and relative humidity 50%.

[0018] In some embodiments, during the storage process, the cordyceps sinensis is subjected to near-infrared spectrum detection at a preset period, adenosine content data is obtained, the adenosine degradation rate obtained by detection is compared with a preset safety threshold, and the carbon dioxide concentration is adjusted according to the comparison result.

[0019] In some embodiments, during the storage process, the cordyceps sinensis is subjected to Raman spectrum detection at a preset period, adenosine and cordycepin content data of the cordyceps sinensis are obtained; the adenosine data obtained by Raman spectrum detection is compared with the adenosine detection result of near-infrared spectrum, and if the deviation is > 1.5%, the inspection equipment or detection calculation parameters are recalibrated.

[0020] In some embodiments, after the storage is completed, the cordyceps sinensis is subjected to laser-induced breakdown spectrum detection, cordycepin content data of the cordyceps sinensis is obtained, the cordycepin content data obtained by laser-induced breakdown spectrum detection is compared with the cordycepin content data obtained by Raman spectrum detection, and if the deviation is > 1.5%, the inspection equipment or detection calculation parameters are recalibrated.

[0021] In some embodiments, the safety threshold of the adenosine degradation rate is set to 0.5% / month, and when the detection result exceeds the threshold, the carbon dioxide concentration is increased by 0.3% within 24 hours.

[0022] In some embodiments, the upper limit of the increase of the carbon dioxide concentration is 4.9%, and when the upper limit is reached, the controlled atmosphere storage is stopped and a shutdown sampling detection is performed.

[0023] Compared with the prior art, the present application has the following beneficial effects:

[0024] The present application integrates the structures of the upwind conveying suspended bed, the vibrating screen, the low-temperature conveying drying, the visual sorting, the pre-cooling shelf, the near-infrared detection, etc., realizes the continuous, automatic and closed operation of the Chinese herbal medicine from postharvest processing to the transfer into the controlled atmosphere storage, and can complete the impurity removal, drying, sorting and grading in a controlled environment, effectively reduces the pollution risk and quality fluctuation caused by manual operation, and improves the processing efficiency and consistency. Meanwhile, by arranging the nondestructive detection unit before the transfer into the controlled atmosphere storage, the initial quality state of the Chinese herbal medicine is realized online, and reliable data basis is provided for the subsequent storage management. The system adopts a modular structure design, is convenient for function expansion or process switching according to actual needs, can be used for direct controlled atmosphere packaging temporary storage, or long-term controlled atmosphere storage transfer, and is suitable for different application scenarios.

[0025] The application also proposes a modified atmosphere storage control method for high-value Chinese herbal medicines, especially Cordyceps sinensis. Through the systematic integration of multiple links such as pretreatment, modified atmosphere transfer, modified atmosphere storage, and out-of-stock control, the whole process of fine management of medicinal materials quality is realized. In the pretreatment stage, the method realizes efficient impurity removal, grading, and quality selection of raw materials through suspension conveying, screening, low-temperature drying, and intelligent visual color selection, significantly reducing the pollution risk caused by human intervention. In the modified atmosphere storage transfer stage, the initial quality data collection is completed without destroying the environmental stability through airtight structure and online spectrum detection, providing a benchmark for subsequent storage control. In the modified atmosphere storage stage, combined with multi-parameter gas environment control and dynamic feedback of spectrum detection data, real-time evaluation and adaptive control of the degradation trend of key active ingredients are realized, effectively inhibiting the loss of active ingredients. In the out-of-stock stage, the out-of-stock quality stability and traceability are ensured through staged temperature rise and re-detection. The overall method significantly improves the intelligentization, standardization, and controllability of the storage process of Chinese herbal medicines, reduces the quality degradation risk, prolongs the effective storage period, and is suitable for large-scale and standardized storage application of high-value Chinese herbal medicines. BRIEF DESCRIPTION OF DRAWINGS

[0026] The application will be described in detail below with specific embodiments and drawings. In order to show details, facilitate understanding of principles, it is not necessarily drawn to scale, and similar reference numerals can describe similar components in different views. The drawings generally show the embodiments discussed herein in an exemplary and non-limiting manner. Among them:

[0027] Figure 1 is a schematic diagram of the module composition of the modified atmosphere storage system and method.

[0028] Figure 2 is a schematic diagram of the pretreatment device.

[0029] Figure 3 is a schematic diagram of the modified atmosphere storage warehouse.

[0030] Figure 4 is a schematic diagram of the environment control device.

[0031] Figure 5 is a flowchart of the Cordyceps pretreatment.

[0032] Figure 6 is a flowchart of the Cordyceps storage.

[0033] Figure 7 is a flowchart of the management of the modified atmosphere storage warehouse.

[0034] Figure 8 is a flowchart of the Cordyceps out-of-stock.

[0035] In the figure, 1, pretreatment device; 2, controlled atmosphere storage warehouse; 21, storage shelf; 22, Raman spectrometer; 23, laser-induced breakdown spectrometer; 24, temperature and humidity detection device; 3, environment control device; 31, controlled atmosphere unit; 32, refrigeration unit; 33, humidifier; 34, central control unit; 4, pretreatment module; 41, suspended bed; 42, ultrasonic vibrating screen; 43, low-temperature conveying drying box; 5, sorting module; 6, packaging module; 7, precooling module; 8, warehousing module; 9, detection module; 10, conveying device. DETAILED DESCRIPTION

[0036] The following are specific embodiments of the present application, and the technical solutions of the present application are further described in conjunction with the drawings. However, the present application is not limited to these embodiments, and the following embodiments do not limit the invention involved in the claims. In addition, all combinations of the features described in the embodiments are not necessarily required by the solutions of the invention.

[0037] The principles and structures of the present application will be described in detail below in conjunction with the drawings and examples.

[0038] EMBODIMENT

[0039] In the storage process of traditional Chinese herbal medicine, especially for high-value Chinese herbal medicine (such as ginseng, cordyceps, ganoderma lucidum, etc.), due to its sensitivity to temperature and humidity, gas composition, microbial control and other environmental conditions, traditional normal temperature or ordinary refrigeration method is difficult to effectively maintain its efficacy and quality. In the prior art, although some controlled atmosphere cold stores have been applied to the storage of Chinese herbal medicine, there are still the following problems:

[0040] 1. The pretreatment process is dispersed and the degree of automation is low: the harvested Chinese herbal medicine usually needs to go through several pretreatment steps such as impurity removal, cleaning, drying, sterilization and packaging. These steps are mostly completed by manual operation or using dispersed equipment, and lack of integrated and automated processing system. Such process not only has low efficiency, but also easily introduces pollution sources in the operation process, affecting the cleanliness and quality of the medicinal materials. The root cause lies in the fact that the existing equipment lacks systematic design and fails to integrate multiple pretreatment links into a controllable environment, resulting in a long operation process and difficulty in standardization.

[0041] 2. The controlled atmosphere environment control precision is insufficient: the existing controlled atmosphere cold store has great limitations in gas composition control, such as limited adjustment range of oxygen and carbon dioxide concentration, slow response speed, low control precision, and difficulty in dynamic adjustment according to different types of Chinese herbal medicine and their storage stages. This is mainly due to the lack of intelligent algorithm support in the existing control system, low sensor precision, and slow response mechanism of the gas control equipment, which makes it difficult to accurately match the physiological needs of the medicinal materials in the storage environment, thereby affecting the storage effect.

[0042] 3. Cold storage structure is fixed, lack of mobility and modular design: Traditional CA cold storage is mostly fixed structure, long installation period, position is not changeable, it is difficult to adapt to the actual application scene such as scattered medicinal material producing area, great seasonal change and frequent transportation demand. The fundamental reason is that the existing cold storage does not fully consider the transportation and assembly requirements in the structure design, lacks standardized interface and modular components, resulting in poor deployment flexibility, and it is difficult to realize rapid response and flexible scheduling.

[0043] 4. Lack of real-time quality monitoring and dynamic feedback mechanism: At present, most CA cold storages lack effective monitoring means for the quality change of Chinese herbal medicine in the storage process, and cannot realize real-time perception and dynamic control of the state of medicinal materials. This is mainly due to the lack of high-precision sensing equipment and data analysis platform in the existing system, which leads to the inability to timely discover and handle problems in the storage process, thereby increasing the risk of medicinal material loss rate and quality decline.

[0044] The existence of the above problems is on the one hand because the existing technology lacks systematic research in the field of Chinese herbal medicine storage, and on the other hand is closely related to the equipment structure design, the intelligent level of the control system, and the depth of understanding of the physiological characteristics of Chinese herbal medicine.

[0045] Therefore, as shown in Figure 1 , the embodiment provides a CA storage system and method for cordyceps, which mainly includes a pretreatment device 1 for pretreating cordyceps before storage, a CA storage warehouse 2 for storing cordyceps for a long time, and an environment control device 3 for controlling the environmental parameters such as temperature and humidity in the CA storage warehouse. The pretreatment device, the CA storage warehouse and the environment control device are respectively located in three independent cavities, and the pretreatment device and the environment control device are respectively located on both sides of the CA storage warehouse.

[0046] As shown in Figure 4 , the environment control device includes a CA unit 31 for adjusting the composition or proportion of the environmental gas in the CA storage warehouse, a refrigeration unit 32 for adjusting the environmental temperature, a humidifier 33, and a central control unit 34.

[0047] As shown in Figure 2 , the pretreatment device mainly includes a pretreatment module 4, a sorting module 5, a packaging module 6, a precooling module 7, a storage module 8, a detection module 9, and a control unit electrically connected with the above modules, which will be described in detail below.

[0048] The pre-treatment module is used for removing impurities, drying and preliminary screening of the collected Cordyceps sinensis, and comprises an upwind conveying suspended bed 41, which suspends and conveys the Cordyceps sinensis by controlled airflow to realize separation of light impurities and preliminary drying of the surface. The suspended bed is composed of a perforated conveying belt, an air supply cavity below, an airflow adjusting assembly and an air speed sensing assembly.

[0049] As shown in Figure 5 operation, the Cordyceps sinensis is evenly laid on the surface of the conveying belt, and under the action of the directional airflow from below, the Cordyceps sinensis is in a slightly suspended or reduced load state, thereby reducing the mechanical contact with the conveying belt, separating the attached fine dust and light impurities by airflow shear force, and simultaneously realizing preliminary removal of the surface moisture. The airflow temperature, air speed and relative humidity of the suspended bed are controlled by the central control module according to the preset program. The suspended bed parameters are set as an air inlet temperature of 40℃, an airflow speed of 1.0m / s and an air inlet relative humidity of ≦30%.

[0050] The pre-treatment module further comprises an ultrasonic vibrating screen 42 arranged downstream of the suspended bed, which is used for removing impurity particles with a particle size less than a preset threshold by vibrating screening. The screen mesh aperture is set according to the size characteristics of the Cordyceps sinensis to be processed. By high-frequency vibration, the impurities such as mud and debris with a particle size less than the screen mesh aperture pass through the screen mesh and are discharged, while the intact Cordyceps sinensis is retained and continuously conveyed downstream. Compared with the traditional mechanical screening method, this structure can effectively reduce the damage to the surface of the Cordyceps sinensis and improve the yield of the finished product at the pre-treatment stage. The ultrasonic vibrating screen (screen mesh aperture 0.5mm) is set at a frequency of 50Hz.

[0051] The pre-treatment module further comprises a low-temperature conveying drying box 43, which is used for continuously conveying and drying the Cordyceps sinensis under controlled temperature conditions to reduce the moisture content to a range suitable for sorting and storage. The low-temperature conveying drying box is arranged downstream of the ultrasonic vibrating screen, and is internally provided with a continuous conveying mechanism, a circulating hot air system and a humidity detection device. The conveying mechanism, for example, adopts a conveying belt passing through the drying box. In the running process, the Cordyceps sinensis is continuously conveyed and dried under controlled temperature conditions, so that the overall moisture content is gradually reduced to a range suitable for sorting and storage. When the humidity of the Cordyceps sinensis is detected to be lower than the preset threshold, the central control module controls it to enter the next process. The low-temperature conveying drying box is dried at a temperature of 40℃ for 6 hours, and when the humidity is lower than 10%, it is conveyed to the sorting module for sorting.

[0052] The sorting module is used for quality identification and grading transmission of the cordyceps sinensis based on image data of the cordyceps sinensis. The specific equipment can be realized by using the existing equipment such as color sorter and intelligent visual recognition device. Of course, if the cost allows, a more intelligent device such as intelligent AI view color sorter is better. The intelligent visual recognition device usually includes an industrial camera, a light supplement module, an image processing module and the like. When the cordyceps sinensis passes through the detection area, the industrial camera collects the surface image data of the cordyceps sinensis in real time, and transmits the image data to the image processing module. The image processing module analyzes the surface characteristics of the cordyceps sinensis through a preset identification model to identify the size, color, worm boring, mold change, damage and other abnormal states of the cordyceps sinensis, and outputs the identification result. When the identification result is unqualified, a control signal is sent to the rejection mechanism to remove the corresponding cordyceps sinensis from the main conveying path. For the cordyceps sinensis identified as qualified, the grading transmission mechanism performs grading processing according to the size, shape or integrity parameters of the cordyceps sinensis. Different grades of cordyceps sinensis are output through different conveying channels, so as to realize quality grading and provide reference information for subsequent storage or packaging. Of course, with the development of AI technology, intelligent AI view color sorters have also appeared, which can achieve better sorting effect.

[0053] The packaging module is used for air conditioning packaging of the cordyceps sinensis which needs to be pre-cooled after sorting. The packaging module is an air conditioning packaging machine. When the cordyceps sinensis does not need to enter the air conditioning storage warehouse, the cordyceps sinensis sorted from the sorting module can be conveyed to the air conditioning packaging machine for air conditioning packaging. The oxygen in the air conditioning packaging is 1.5%, the carbon dioxide is 4%, and the nitrogen is 94.5%. The aluminum foil composite film packaging can be used.

[0054] The pre-cooling module is used for temporary refrigeration of the cordyceps sinensis packaged by air conditioning. The pre-cooling module is a pre-cooling area provided with a pre-cooling temporary storage shelf. The shelf is used for storing the packaged cordyceps sinensis. The pre-cooling area can adjust the temperature of the area by using a refrigeration device. Of course, the pre-cooling module can also be used for pre-cooling the cordyceps sinensis before entering the storage, so that the cordyceps sinensis can avoid condensation or quality fluctuation when entering the subsequent process due to large temperature difference. The pre-cooling temperature is set to 4°C, and the humidity is set to 50%.

[0055] As shown in Figure 6 The storage module is used for conveying the cordyceps sinensis which needs to be air-conditioned stored into the warehouse after sorting. The storage module of the embodiment is an airtight window (door) of the air-conditioned storage warehouse. A telescopic conveyor belt can be used. When the airtight window is opened, the conveyor belt extends into the airtight window, so as to convey the cordyceps sinensis outside into the warehouse. When the conveying is completed, the conveyor belt is retracted outside the airtight window, and the airtight window is automatically closed.

[0056] The detection module is used for detecting specific components of the Ophiocordyceps sinensis stored by the storage module. In the embodiment, the detection module is a near-infrared spectrum detector arranged at the airtight window in the controlled atmosphere storage and used for detecting the initial adenosine content of the Ophiocordyceps sinensis.

[0057] The near-infrared spectrum parameters are set as spectrum resolution: 8 cm-1, integral time: 500 ms, and scanning times: 3. The spectrum data is preprocessed by using Savitzky-Golay smoothing and first derivative calculation of the slope of the spectrum intensity with respect to wavelength (or wave number). When used for the first time, the Qinghai Ophiocordyceps model is used: adenosine content = 0.32*1670 nm peak intensity + 0.15*2100 nm peak area. Subsequently, the localized calibration model is corrected by the networking data processing center based on the model.

[0058] The modules are connected by the conveying device and are uniformly scheduled and controlled by the control unit, so that the modules work in coordination. The conveying device 10 can be a conveyor belt or other equipment capable of conveying the Ophiocordyceps sinensis between modules.

[0059] As shown in Figure 3 The controlled atmosphere storage is provided with a storage shelf 21 for storing the Ophiocordyceps sinensis. The storage shelf is provided with a mobile Raman spectrometer 22, a laser-induced breakdown spectrometer 23, and a temperature and humidity detection device 24 and other environmental parameter detection devices.

[0060] The Raman spectrum is used for detecting the cordycepin and the change of adenosine of the Ophiocordyceps sinensis, and the laser-induced breakdown spectrometer is used for detecting the change of cordycepin of the Ophiocordyceps sinensis.

[0061] After all the Ophiocordyceps sinensis enters the controlled atmosphere storage, the telescopic conveyor belt is retracted outside the airtight window, the airtight window is automatically closed, the controlled atmosphere unit is started to perform controlled atmosphere treatment, the oxygen reduction speed is set to 0.5% / h, and the terminal oxygen concentration is 1.5%. When the oxygen concentration reaches the terminal oxygen concentration, the next stage is entered.

[0062] As shown in Figure 7As shown, during controlled atmosphere storage, the storage parameters are set as follows: oxygen concentration 1.5% (concentration fluctuation range controlled at 1.3-1.7%), carbon dioxide concentration 4% (concentration fluctuation range controlled at 3.7-4.3%), temperature 3°C (temperature fluctuation range controlled at 2.8-3.2°C), and humidity 50% (humidity fluctuation range controlled at 48-52%). After reaching the set parameters, the near-infrared spectrometer is used to detect the adenosine of the cordyceps in the warehouse every 30 days (the correction formula is increased compared to the previous stage, and the corrected spectral data = original spectral data x (1+0.008 x (T-4)). The data is recorded and saved. The Raman spectrometer is used to detect the cordycepsin and adenosine of the cordyceps in the warehouse every 90 days, and the data is recorded and saved. The setting parameters of the Raman spectrometer are as follows: laser wavelength 532 nm, laser power 50 mW, integration time 20 seconds x 3 times (automatic background fluorescence deduction), extraction of cordycepsin characteristic peak (775 cm -1 ) and adenosine characteristic peak (1420 cm -1 ). The adenosine data is compared with the adenosine detection results of the near-infrared spectrum. When the deviation is >1.5%, the data is collected and returned to the data center for recalibration of the detection calculation parameters. The safety threshold of adenosine degradation rate is set at 0.5% / month. When the adenosine degradation rate exceeds the threshold, an automatic carbon dioxide up-regulation instruction is sent, and the carbon dioxide concentration is increased by 0.3% within 24 hours. If the adenosine degradation rate falls within the safety threshold the next month, the carbon dioxide concentration is adjusted back to the original 4.0% within 24 hours. If the adenosine degradation rate still exceeds the safety threshold the next month, the carbon dioxide concentration is increased by 0.3% again within 24 hours, and the data is returned to the networked data processing center for analysis and optimization of the local calibration model. At the same time, a warning is issued. The upper limit of carbon dioxide concentration is 4.9%. When the upper limit is reached, the controlled atmosphere storage is stopped, and the cordyceps is sampled and detected.

[0063] For example, Figure 8As shown, when the warehouse is needed, the cordyceps is detected once for adenosine when reaching 30d before the user set delivery date, when the adenosine retention rate is > 90.5%, the temperature rising procedure of 7d before delivery is carried out, when the adenosine retention rate is < 90.5%, the carbon dioxide concentration is increased by 0.3% within 24h and then stored for 30d; the temperature rising procedure of 7d before delivery is that the temperature rising rate is set to be <= 1 DEG C / d, the initial temperature is increased to 7 DEG C from 3 DEG C on the 7th day, the delivery temperature is 7 DEG C, the humidity is controlled to be maintained at 50% at the same time to avoid dewing in the temperature rising process, then the controlled atmosphere environment is released, the laser-induced breakdown spectrometer is used to detect cordycepin on the delivered cordyceps, the laser-induced breakdown spectrometer is set as follows: wavelength 1064nm, pulse energy 50mJ, sampling sampling points are 3 points per plant, the detection result is compared with Raman spectrum + fluorescence inhibition, when the deviation is > 1.5%, the data is returned to the data center, the detection calculation parameters are recalibrated, then the cordycepin data is obtained, and at the same time, the adenosine content is detected once, finally the final cordycepin and adenosine content are recorded for delivery; at the same time, the data processing center is connected to record and analyze all the storage data, storage period data and delivery data, and optimize the local calibration model.

[0064] The application realizes the continuous, automatic and closed operation of cordyceps sinensis from postharvest processing to controlled atmosphere storage by integrating the structures of the upwind conveying suspended bed, the vibrating screen, the low-temperature conveying drying, the visual sorting, the pre-cooling shelf and the near-infrared detection. The system can complete the impurity removal, drying, sorting and grading in a controlled environment, effectively reduces the pollution risk and quality fluctuation caused by manual operation, and improves the processing efficiency and consistency. At the same time, the nondestructive detection unit is arranged before the controlled atmosphere storage, the initial quality state of the cordyceps sinensis is obtained online, and reliable data basis is provided for subsequent storage management. The system adopts a modular structure design, which is convenient for function expansion or process switching according to actual needs, can be used for direct controlled atmosphere packaging temporary storage, or long-term controlled atmosphere storage, and is suitable for different application scenarios.

[0065] The specific embodiments described herein are merely illustrative of the spirit of the application. Those skilled in the art of the application can make various modifications or supplements to the described specific embodiments or use similar ways to replace them without departing from the spirit of the application or exceeding the scope defined by the appended claims.

[0066] Although a few terms are used frequently herein, the possibility of using other terms is not excluded. The use of these terms is merely intended to facilitate the description and explanation of the nature of the present application; they are not to be construed as any kind of additional limitation on the spirit of the present application. The order of execution, procedure, steps, etc. of the devices and methods shown in the specification and drawings can be changed as appropriate, unless the order is specifically stated or the output of preceding processes is used in a subsequent process. The use of similar ordinal terms (for example, "first", "next", "second", "third", "again", "then", etc.) for the sake of convenience in description does not mean that the processes must be performed in the order described.

[0067] It will be understood by those within the art that, in this disclosure, relative terms are intended to encompass different positional relationships to the other elements and orientations of the described devices and methods. For example, if a device or element is positioned "above" another device or element, it can be positioned directly above it or positioned above it with one or more intervening devices or elements positioned between the two. As used herein, the term "above" can include the above position as well as the below position unless otherwise specifically stated or unless it would be understood from the context of the specific embodiment. The term "above" can include the position "directly above," unless otherwise specifically stated or unless it would be understood from the context of the specific embodiment. The term "below" can be understood to include the below position as well as the above position unless otherwise specifically stated or unless it would be understood from the context of the specific embodiment. The term "below" can include the position "directly below," unless otherwise specifically stated or unless it would be understood from the context of the specific embodiment. The term "on" can be understood to include "directly on" unless otherwise specifically stated or unless it would be understood from the context of the specific embodiment. The term "in" can be understood to include "directly in" unless otherwise specifically stated or unless it would be understood from the context of the specific embodiment. The term "inner" and "outer" refer to the inner and outer with respect to the outline of each component itself.

[0068] For the sake of convenience, the terms "on," "above," "upper," "lower," and "beneath" can be used herein with reference to the orientation of one device or element relative to another, as shown in the drawings. It will be understood that these terms are intended to encompass different positional relationships to the other elements and orientations of the described devices and methods. For example, if a device or element is positioned "above" another device or element, it can be positioned directly above it or positioned above it with one or more intervening devices or elements positioned between the two. As used herein, the term "above" can include the above position as well as the below position unless otherwise specifically stated or unless it would be understood from the context of the specific embodiment. The term "above" can include the position "directly above," unless otherwise specifically stated or unless it would be understood from the context of the specific embodiment. The term "below" can be understood to include the below position as well as the above position unless otherwise specifically stated or unless it would be understood from the context of the specific embodiment. The term "below" can include the position "directly below," unless otherwise specifically stated or unless it would be understood from the context of the specific embodiment. The term "on" can be understood to include "directly on" unless otherwise specifically stated or unless it would be understood from the context of the specific embodiment. The term "in" can be understood to include "directly in" unless otherwise specifically stated or unless it would be understood from the context of the specific embodiment. The term "inner" and "outer" refer to the inner and outer with respect to the outline of each component itself.

[0069] In addition, some vague terms (for example, substantially, certain, generally, etc.) can refer to slight inaccuracies or slight deviations in conditions, quantities, values, or sizes, etc., some of which are within the range of manufacturing deviations or tolerances. It should be noted that the use of the terms "first", "second", etc. to define parts is merely for the convenience of distinguishing the corresponding parts, and unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present application.

Claims

1. A controlled atmosphere storage system, characterized in that, The system includes pretreatment equipment for processing Chinese herbal medicines before they are stored, a controlled atmosphere storage facility for long-term storage of Chinese herbal medicines, and environmental control equipment for controlling environmental parameters such as temperature and humidity within the controlled atmosphere storage facility; the pretreatment equipment includes: The pretreatment module is used to remove impurities, dry, and perform preliminary screening of Chinese herbal medicines; The sorting module is used to identify and grade the Chinese herbal medicines after they have been processed by the preprocessing module. The packaging module is used for modified atmosphere packaging of Chinese herbal medicines that need to be pre-cooled after sorting. A pre-cooling module is used to temporarily refrigerate the Chinese herbal medicines in modified atmosphere packaging; The warehousing module is used to transport sorted Chinese herbal medicines that require controlled atmosphere storage into the warehouse. The detection module is used to detect specific components in the Chinese herbal medicines that are stored through the storage module. The modules are connected and transmitted via a transmission device and are uniformly controlled by a control unit.

2. A controlled atmosphere storage method, used in the controlled atmosphere storage system of claim 1, characterized in that, The space for storing Chinese herbal medicines is airtightly isolated, and the gas environment of the space is adjusted to the target controlled atmosphere state through a controlled atmosphere device; during the storage process, detection data reflecting the quality changes of Chinese herbal medicines are periodically acquired; the detection data is compared with the quality benchmark data, and when the quality change is detected to exceed a preset threshold, at least one controlled atmosphere parameter in the storage space is adjusted; The quality of the Chinese herbal medicine is determined within a preset time before it leaves the controlled atmosphere storage space, and at least one controlled atmosphere parameter in the storage space is adjusted according to the determination result so that the quality of the Chinese herbal medicine meets the preset standard for leaving the storage space.

3. The controlled atmosphere storage method according to claim 2, characterized in that, The herbal medicine is Cordyceps sinensis. 30 days before the Cordyceps sinensis leaves the herbal medicine storage space, an adenosine test is performed. If the adenosine retention rate is >90.5%, the herbal medicine storage space is heated at a preset rate within 7 days before the Cordyceps sinensis leaves. If the adenosine retention rate is <90.5%, the carbon dioxide concentration is increased by 0.3% within 24 hours, and the Cordyceps sinensis is stored for another 30 days.

4. The controlled atmosphere storage method according to claim 3, characterized in that, The preset heating rate is ≤1℃ / d, and the maximum temperature does not exceed 7℃, while maintaining the humidity of the herbal medicine space at 50%.

5. The controlled atmosphere storage method according to claim 2, characterized in that, The herbal medicine is Cordyceps sinensis. After the Cordyceps sinensis enters the herbal medicine storage space, the oxygen concentration in the storage environment decreases at a rate of 0.5% / h until the oxygen concentration reaches 1.5%. Then it enters the controlled atmosphere storage stage. The storage environment during the controlled atmosphere storage stage is controlled as follows: oxygen concentration 1.3% to 1.7%, carbon dioxide concentration 3.7% to 4.3%, temperature 2.8℃ to 3.2℃, and relative humidity 48% to 52%.

6. The controlled atmosphere storage method according to claim 5, characterized in that, The controlled atmosphere storage environment is as follows: oxygen concentration 1.5%, carbon dioxide concentration 4%, temperature 3℃, and relative humidity 50%.

7. The controlled atmosphere storage method according to claim 5, characterized in that, During storage, near-infrared spectroscopy is performed on Cordyceps sinensis according to a preset cycle to obtain adenosine content data. The detected adenosine degradation rate is compared with a preset safety threshold, and the carbon dioxide concentration is adjusted based on the comparison results.

8. The controlled atmosphere storage method according to claim 7, characterized in that, During storage, the Cordyceps sinensis is subjected to Raman spectroscopy detection according to a preset cycle to obtain the adenosine and cordycepin content data of the Cordyceps sinensis; the adenosine data obtained by Raman spectroscopy detection is compared with the adenosine detection results of near-infrared spectroscopy. If the deviation is >1.5%, the inspection equipment or detection calculation parameters are recalibrated.

9. The controlled atmosphere storage method according to claim 8, characterized in that, After storage, the Cordyceps sinensis is subjected to laser-induced breakdown spectroscopy to obtain the cordycepin content data. The cordycepin content data obtained by laser-induced breakdown spectroscopy is compared with the cordycepin content data obtained by Raman spectroscopy. If the deviation is >1.5%, the inspection equipment or detection calculation parameters are recalibrated.

10. The controlled atmosphere storage method according to claim 7, characterized in that, The safety threshold for adenosine degradation rate is set at 0.5% / month. If the test result exceeds this threshold, the carbon dioxide concentration will be increased by 0.3% within 24 hours.

11. The controlled atmosphere storage method according to claim 7, characterized in that, The upper limit for adjusting the carbon dioxide concentration is 4.9%. When this limit is reached, controlled atmosphere storage will be stopped and sampling and testing will be carried out.

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