WO2020022516A1 - Dispositif de production d'informations de conditions de stockage et système de commande d'environnement intérieur de conteneur - Google Patents

Dispositif de production d'informations de conditions de stockage et système de commande d'environnement intérieur de conteneur Download PDF

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Publication number
WO2020022516A1
WO2020022516A1 PCT/JP2019/029554 JP2019029554W WO2020022516A1 WO 2020022516 A1 WO2020022516 A1 WO 2020022516A1 JP 2019029554 W JP2019029554 W JP 2019029554W WO 2020022516 A1 WO2020022516 A1 WO 2020022516A1
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WIPO (PCT)
Prior art keywords
storage
unit
information
freshness
condition information
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PCT/JP2019/029554
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English (en)
Japanese (ja)
Inventor
喜一郎 佐藤
直宏 田中
紀考 亀井
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ダイキン工業株式会社
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Publication of WO2020022516A1 publication Critical patent/WO2020022516A1/fr

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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
    • A01F25/00—Storing agricultural or horticultural produce; Hanging-up harvested fruit
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
    • A23B7/00—Preservation or chemical ripening of fruit or vegetables
    • A23B7/04—Freezing; Subsequent thawing; Cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features

Definitions

  • the present disclosure relates to a storage condition information creation device and a storage environment control system.
  • the freshness of fresh food stored in a storage is maintained by controlling the environment in the storage (specifically, the temperature of the air in the storage, the composition of the air in the storage, and the like).
  • the refrigeration apparatus disclosed in Patent Document 1 is intended for a container used for marine transportation or the like, and controls the temperature and composition (specifically, the oxygen concentration and the carbon dioxide concentration) of the air in the container of the container. I do.
  • the perishers such as the owners of the perishables and the owners of the storages are required to determine the environment inside the storages (specifically, the temperature and composition of air, etc.) and the storage period.
  • Storage conditions such as, may be determined by own experience and intuition. For this reason, it was not always clear whether the storage conditions determined by the store were appropriate for the perishables to be stored.
  • An object of the present disclosure is to create storage conditions suitable for fresh food to be stored.
  • the first embodiment of the present disclosure is directed to a storage condition information creating device (50). Then, when a physical quantity indicating the freshness of the fresh thing is used as a freshness index, the time series data of the freshness index of the fresh thing stored in the storage (1) which is controlled so that the inside environment becomes a predetermined setting environment.
  • the reference model (55) actually stores “the same type of fresh food as the storage target fresh food” in the “storage controlled so that the environment inside the refrigerator becomes the predetermined setting environment”. It is created based on the “time series data of the freshness index” obtained at that time. For this reason, the storage condition information created by the information creation unit (65) based on the reference model (55) is information relating to storage conditions suitable for fresh food to be stored. Therefore, according to this aspect, it is possible to create and output storage condition information relating to storage conditions suitable for a fresh product to be stored by the user.
  • the model storage unit (73) is configured to store the reference model.
  • (55) is stored for each of a plurality of types of perishables, and the information creating unit (65) is based on the reference model (55) corresponding to the type of perishables acquired by the designated information acquiring unit (82). To create the storage condition information.
  • the model storage unit (73) stores the reference models (55) corresponding to each of the plurality of types of perishables.
  • the information creating unit (65) creates storage condition information on the perishables based on the reference model (55) corresponding to the type of perishables specified by the user. For this reason, the storage device information (50) can be used to create storage condition information relating to the type of fresh food designated by the user.
  • the information creation unit (65) is configured to store the perishables in the storage (1) while maintaining freshness, in a storable period. And creating the storage condition information including at least one of a recommended environment that is an environment inside the storage (1) for storing the fresh product in the storage (1) while keeping freshness. is there.
  • the storage condition information created by the information creating unit (65) includes one or both of a storable period and a recommended environment.
  • the model storage unit (73) stores the reference model (55) for each of the plurality of storage environments.
  • the model storage unit (73) stores a plurality of reference models having different environments in a storage (1) for storing fresh food.
  • the information creating unit (65) sets a storable period, which is a period in which the fresh food can be stored in the storage (1) while maintaining freshness, by a plurality of times.
  • the storage condition information is specified for each of the in-compartment environments, and the storage condition information including a plurality of the in-compartment environments and the storable periods corresponding to each of the in-compartment environments is included.
  • a plurality of in-compartment environments and a storable period are paired one by one.
  • Each storable period is a period during which fresh foods can be stored while keeping freshness in the “storage (1) controlled so that the environment inside the warehouse becomes a corresponding environment inside the warehouse”.
  • the specified period which is a storage period of fresh food specified by a user
  • the information creating unit (65) includes the storage unit (1).
  • the storage condition information includes a recommended environment which is an environment inside the storage (1) for keeping the freshness of the fresh product stored in the storage for the designated period.
  • the recommended environment is included in the storage condition information created by the information creating unit (65).
  • the recommended environment is the environment inside the storage (1) for keeping the freshness of the fresh food stored in the storage (1) for a specified period.
  • the information creation unit (65) is configured to be able to acquire a specified period that is a storage period of the fresh material specified by the user,
  • the storage condition information including a storable period which is a period in which the storage environment (1) can be stored with freshness in the storage (1) controlled such that the environment in the storage becomes the designated environment is created.
  • the storage condition information created by the information creation unit (65) includes a storable period.
  • the storable period in this embodiment is a period during which fresh products can be stored in the "storage (1) controlled such that the environment inside the warehouse is the designated environment" while maintaining freshness.
  • An eighth aspect of the present disclosure is the data acquisition unit (1) according to any one of the first to seventh aspects, wherein the data acquisition unit acquires time-series data of the freshness index of the fresh thing stored in the storage (1). 81), and using the time series data of the freshness index acquired by the data acquisition unit (81), the time series data is stored in the storage (1) when the data acquisition unit (81) acquires the time series data. And a model updating unit (62) for updating the reference model (55) corresponding to the perishables.
  • the model updating unit (62) updates the reference model (55) using the time series data of the freshness index acquired by the data acquiring unit (81). Therefore, when the time series data of the freshness index during the period in which the fresh food is actually stored in the storage (1) is obtained, the reference model (55) can be improved by using the time series data.
  • the information creation unit (65) determines whether or not freshness of the fresh product is maintained by using the reference model (55). ) Is determined based on the standard deviation, average value, skewness, or kurtosis of an index indicating the similarity or dissimilarity of the time series data of the freshness index with respect to the above.
  • the information creation unit (65) determines the freshness of a fresh product by determining the standard deviation and the average of an index indicating “similarity or dissimilarity of the time series data of the freshness index with respect to the reference model (55)”. The value, skewness, or kurtosis is used.
  • the reference model (55) stored in the model storage unit (73) stores freshness of fresh food. At least one of a normal model created from the time-series data of the freshness index and a deterioration model created from the time-series data of the freshness index in a state where freshness of fresh food is impaired.
  • the reference model (55) stored in the model storage unit (73) includes one or both of the normal model and the deterioration model.
  • the reference model (55) stored in the model storage unit (73) includes a sugar content and a water content that are the freshness indexes. It is created from time series data of at least one of hardness.
  • the reference model (55) stored in the model storage unit (73) includes time series data of the sugar content of the fresh product, time series data of the water content of the fresh product, and time series data of the hardness of the fresh product. It is created based on at least one of the data.
  • the storage condition information creating device (50) according to any one of the first to eleventh aspects, and a refrigeration system that performs a refrigeration cycle to adjust the temperature in the storage (1). It comprises an apparatus (20) and an air composition adjusting device (40) for adjusting the composition of air in the storage of the storage (1) by supplying air having the adjusted composition to the storage (1).
  • an indoor environment control system including a storage condition information creating device (50), a freezing device (20), and an air composition adjusting device (40) is configured.
  • FIG. 1 is a schematic cross-sectional view of a container refrigeration device of a storage environment control system of an embodiment and a transport container to which the refrigeration device is attached.
  • FIG. 2 is a piping diagram of a refrigerant circuit provided in the container refrigeration apparatus of the in-compartment environment control system of the embodiment.
  • FIG. 3 is a block diagram illustrating a configuration of the information creating apparatus according to the embodiment.
  • FIG. 4 is a system configuration diagram of the information creating apparatus according to the embodiment.
  • FIG. 5 is an explanatory diagram illustrating a process of creating a reference model stored by the information creating device.
  • FIG. 6 is an explanatory diagram showing a process of creating a reference model stored by the information creating device and a process of calculating a storable period from the reference model.
  • FIG. 7 is a diagram illustrating an example of storage condition information created by the information creating device.
  • the indoor environment control system (10) of the present embodiment includes a container refrigeration device (20), an air composition adjusting device (40), a freshness index sensor (15), and an information creating device (50).
  • the storage environment control system (10) is provided in a transport container (1) for performing so-called CA (Controlled Atmosphere) transport.
  • the in-compartment environment control system (10) of the present embodiment controls the in-compartment environment of the shipping container (1) so that the in-compartment environment becomes the set environment.
  • the in-compartment environment control system (10) sets environmental indices (eg, temperature, humidity, oxygen concentration, carbon dioxide concentration, and the like of the in-compartment air) that are physical quantities indicating the in-compartment environment of the shipping container (1). Control the environment inside the shipping container (1) so that the value becomes the value.
  • the transport container (1) provided with the in-compartment environment control system (10) of the present embodiment is used for transporting fresh products (7).
  • fresh products (7) include fruits, vegetables, cereals, bulbs, flowers and the like.
  • the container body (2) of the transport container (1) which is a storage, is formed in an elongated rectangular parallelepiped box shape. One end face of the container body (2) is open, and a container refrigeration apparatus (10) is attached so as to close this open end.
  • the interior space of the container body (2) forms a luggage compartment (5) for storing cargo (6).
  • Cargo (6) is perishable (7) packed in a box.
  • a floor plate (3) for placing cargo (6) is placed at the bottom of the cargo compartment (5).
  • An underfloor flow path (4) is formed between the floor plate (3) and the bottom plate of the container body (2) for flowing the air blown out by the container refrigeration system (20).
  • the underfloor flow path (4) is a flow path that extends along the bottom plate of the container body (2) in the longitudinal direction of the container body (2).
  • the underfloor flow path (4) has one end connected to the outlet (34) of the container refrigeration system (20), and the other end connected to the space above the floor plate (3) (that is, the space where the cargo (6) is stored). ).
  • the container refrigeration apparatus (20) includes a casing (30), a refrigerant circuit (21) for performing a refrigeration cycle, an external fan (26), and an internal fan (27). .
  • the casing (30) includes a casing body (31) and a back plate (32).
  • the casing (30) is provided with a refrigerant circuit (11), an external fan (16), and an internal fan (17).
  • the casing body (31) has a lower part that is recessed toward the cargo room (5) of the shipping container (1).
  • the lower part of the casing body (31) forms an external equipment room (35) communicating with the external space of the transport container (1).
  • An outside fan (26) is arranged in the outside device room (35).
  • the back plate (32) is a substantially rectangular plate-shaped member.
  • the rear plate (32) is disposed closer to the cargo room (5) of the transport container (1) than the casing body (31), and forms an air passage (36) between the casing and the casing body (31). I do.
  • the upper end of the in-compartment air flow path (36) constitutes a suction port (33) of the casing body (31), and the lower end thereof constitutes an outlet (34) of the casing body (31).
  • the in-compartment air flow path (36) communicates with the luggage compartment (5) through the suction port (33), and communicates with the underfloor flow path (4) through the outlet port (34).
  • an in-compartment fan (27) is arranged above the in-compartment air flow path (36.
  • the refrigerant circuit (21) is formed by connecting a compressor (22), a condenser (23), an expansion valve (24), and an evaporator (25) with piping. Closed circuit.
  • the compressor (22) When the compressor (22) is operated, the refrigerant circulates through the refrigerant circuit (21), and a vapor compression refrigeration cycle is performed.
  • the condenser (23) is arranged on the suction side of the external fan (26) in the external equipment room (35), and the evaporator (25) is connected to the internal air flow path (36). Is disposed below the in-compartment fan (27).
  • the compressor (22) is arranged in the external equipment room (35).
  • the container refrigeration system (20) includes a refrigerator temperature sensor (37) and a refrigerator humidity sensor (38).
  • the in-compartment temperature sensor (37) and the in-compartment humidity sensor (38) are arranged upstream of the evaporator (25) in the in-compartment air flow path (36).
  • the in-compartment temperature sensor (37) measures the temperature of the in-compartment air sucked into the in-compartment air flow path (36) from the suction port (33).
  • the in-compartment humidity sensor (38) measures the relative humidity of the in-compartment air sucked into the in-compartment air flow path (36) from the suction port (33).
  • the temperature of the inside air measured by the inside temperature sensor (37) and the relative humidity of the inside air measured by the inside humidity sensor (38) are environmental indicators that are physical quantities indicating the inside environment.
  • the container refrigeration system (20) adjusts the air temperature in the luggage compartment (5) of the shipping container (1) so that the measurement value of the internal temperature sensor (37) becomes a predetermined set temperature.
  • the container refrigeration system (20) controls the temperature of the luggage compartment (5) by controlling the rotation speed of the compressor (22) to adjust the cooling capacity of the evaporator (25).
  • the air composition adjusting device (40) is a device for adjusting the composition of air in the shipping container (1). As shown in FIG. 1, the air composition adjusting device (40) includes a main unit (41) and a ventilation exhaust pipe (45). The main unit (41) is installed in the external equipment room (35) of the container refrigeration system (20).
  • the main unit (41) of the air composition adjusting device (40) includes two adsorption cylinders, a pressure pump for supplying pressurized air to the adsorption cylinder, and a decompression pump for sucking air from the adsorption cylinder. And are accommodated.
  • the air composition adjusting device (40) uses a so-called PSA (Pressure Swing Adsorption) method to generate modified air having a composition different from that of the outside air, using the outside air (that is, the atmosphere) as a raw material. This modified air has a higher nitrogen concentration than the outside air and a lower oxygen concentration than the outside air.
  • PSA Pressure Swing Adsorption
  • the main unit (41) includes an outside air inlet (42) for taking in outside air into the main unit (41). Further, a supply pipe (43) and an oxygen discharge pipe (44) are connected to the main unit (41).
  • the supply pipe (43) is a pipe for introducing the corrected air (low oxygen concentration air) generated in the main unit (41) into the luggage compartment (5), and the end thereof is an internal air flow path (36).
  • Open to The oxygen discharge pipe (44) is a pipe for discharging high-oxygen-concentration air generated in the main unit (41) to the outside of the refrigerator, and the terminal end thereof opens to the external equipment room (35).
  • the ventilation exhaust pipe (45) is a pipe for discharging the air inside the storage container (1) to the outside of the storage. One end of the ventilation exhaust pipe (45) opens to the internal air flow path (36), and the other end opens to the external equipment room (35).
  • the ventilation exhaust pipe (45) is provided with a ventilation exhaust valve (46).
  • the ventilation exhaust valve (46) is an on-off valve including an electromagnetic valve.
  • the air composition adjusting device (40) includes an oxygen concentration sensor (47) and a carbon dioxide concentration sensor (48).
  • the oxygen concentration sensor (47) and the carbon dioxide concentration sensor (48) are arranged on the upstream side of the evaporator (25) in the internal air flow path (36).
  • the oxygen concentration sensor (47) measures the oxygen concentration of the internal air sucked into the internal air passage (36) from the suction port (33).
  • the carbon dioxide concentration sensor (48) measures the carbon dioxide concentration of the air in the refrigerator sucked into the refrigerator air passage (36) from the suction port (33).
  • the oxygen concentration of the inside air measured by the oxygen concentration sensor (47) and the carbon dioxide concentration of the inside air measured by the carbon dioxide concentration sensor (48) are environmental indexes which are physical quantities indicating the inside environment.
  • the air composition adjusting device (40) stores the transport container (1) such that the measured value of the oxygen concentration sensor (47) and the measured value of the carbon dioxide concentration sensor (48) become the respective set concentrations. Adjust the composition of the inside air.
  • the air composition adjusting device (40) adjusts the oxygen concentration of the air in the storage container (1) by supplying the corrected air generated by the main unit (41) to the luggage compartment (5).
  • the air composition control device (40) opens the ventilation exhaust valve (46) and discharges the inside air containing carbon dioxide from the ventilation exhaust pipe (45), thereby opening the transportation container (1). Adjust the carbon dioxide concentration of the air in the refrigerator.
  • the freshness index sensor (15) is a sensor that measures a freshness index that is a physical quantity indicating the freshness of the fresh product (7).
  • the freshness index sensor (15) measures the sugar content of the fresh product (7) and the water content of the fresh product (7) as freshness indicators.
  • a near-infrared spectrometer that irradiates the target with near-infrared rays and measures the sugar content and water content of the target based on the wavelength of the near-infrared absorbed by the target can be used. it can.
  • the indoor environment control system (10) of the present embodiment includes a plurality (three in FIG. 1) of freshness index sensors (15).
  • the freshness index sensors (15) are provided one by one for a plurality (three in FIG. 1) of cargoes (6) arranged at different positions.
  • the information creating device (50) includes an arithmetic processing unit (60), a memory unit (70), and a communication unit (80).
  • the information creation device (50) is a device that creates storage condition information corresponding to information input by a user. That is, this information creating device (50) is a creating device for storage condition information. Further, the information creating device (50) of the present embodiment provides the created storage condition information to the user.
  • the arithmetic processing unit (60) is, for example, a microprocessor composed of an integrated circuit. As will be described in detail later, the arithmetic processing unit (60) includes a feature amount extraction unit (61), a model update unit (62), a storable period calculation unit (63), a storage environment condition calculation unit (64), and information Functions as a creating unit (65). Further, the arithmetic processing unit (60) functions as a storable period specifying unit (66) and a recommended environment specifying unit (67) of the information creating unit (65).
  • the memory unit (70) is, for example, a semiconductor memory formed of an integrated circuit. As will be described in detail later, the memory unit (70) includes a data storage unit (71), a feature amount storage unit (72), a model storage unit (73), a storable period storage unit (74), and a storage environment condition storage unit. (75) and functions as a designated information storage unit (76).
  • the communication unit (80) is a communication module that performs wireless communication with a communication terminal (100) such as a smartphone used by a user.
  • the communication unit (80) can perform wired communication with the container refrigeration device (20) and the air composition adjusting device (40).
  • the communication unit (80) functions as a data acquisition unit (81), a designated information acquisition unit (82), and an output unit (83).
  • the model storage unit (73) of the information creating device (50) stores the reference model (55).
  • the reference model (55) is a model created from the “time series data of freshness index” of the fresh food stored in the “storage controlled so that the inside environment becomes a predetermined setting environment”.
  • the model storage unit (73) stores a plurality of reference models (55), each of which corresponds to a different setting environment, for each of a plurality of types of perishables. Further, the reference model (55) stored in the model storage unit (73) of the present embodiment is a normal model created from “time series data of a freshness index” in a state where freshness of a fresh product is maintained.
  • the model storage unit (73) stores in advance a reference model (55) obtained by performing a test of storing fresh products in a storage. Further, as will be described in detail later, the information creating device (50) uses time-series data obtained when the perishables (7) are actually stored and transported in the transport container (1) as a storage. , The reference model (55) stored in the model storage unit (73) is updated.
  • the storage for storing perishables in the test for preparing the reference model (55) is a “transport container provided with the in-room environment control system (10) provided with the information generating device (50) of the present embodiment”. It does not need to be the same as (1).
  • a storage for storing fresh food is another transportation of the same type as the “transport container (1) provided with the in-compartment environmental control system (10) of the present embodiment”.
  • Storage container, or a storage container of a different type from the “transport container (1) provided with the storage environment control system (10) of the present embodiment” for example, a stationary storage container). Good.
  • the process of creating the reference model (55) will be described with reference to FIGS.
  • the process of creating the reference model (55) will be described by taking as an example a case where the reference model (55) is created from the time series data of the sugar content and the water content of the fresh material, which are the freshness indexes.
  • fresh foods are actually stored in a controlled storage such that the environment in the refrigerator becomes a predetermined setting environment (for example, the temperature, oxygen concentration, and carbon dioxide concentration in the refrigerator become the respective set values). It stores and acquires time-series data of a freshness index (sugar content in FIG. 5) of the stored fresh product (see (a) of FIG. 5).
  • a predetermined setting environment for example, the temperature, oxygen concentration, and carbon dioxide concentration in the refrigerator become the respective set values.
  • the obtained time series data of the freshness index is normalized (normalized) so that the average becomes 0 (zero) and the variance becomes 1 (see FIG. 5B).
  • a trend component is extracted from the normalized data (see (c) of FIG. 5).
  • a frequency distribution of the freshness index (the sugar content in FIG. 5) in the trend component is created (see (d) of FIG. 5).
  • a mixed Gaussian model is created by approximating the created frequency distribution with a linear combination of a plurality of Gaussian functions (see (e) of FIG. 5).
  • a mixed Gaussian model based on the time series data of the sugar content of the fresh product is obtained (see (e) of FIGS. 5 and 6). Further, a similar process is performed on the time series data of the moisture content of the fresh product to create a mixed Gaussian model based on the time series data of the moisture content of the fresh product (see (f) of FIG. 6). Then, by combining the mixed Gaussian model relating to the sugar content of the fresh product shown in FIG. 6 (e) and the mixed Gaussian model relating to the water content of the fresh product shown in FIG. 6 (f), the reference model shown in FIG. Create (55).
  • This reference model (55) is a three-dimensional model relating to sugar content, water content and frequency.
  • the model storage unit (73) stores the frequency distribution of the freshness index created in the process of creating the reference model (55) together with the reference model (55) (see FIG. 5 (d)). It is stored in association with (55). Although described in detail later, the frequency distribution of the freshness index stored in the model storage unit (73) is used when the model update unit (62) updates the reference model (55).
  • the storable period calculation unit (63) of the information creating device (50) performs an arithmetic operation using the reference model (55) stored in the model storage unit (73), thereby corresponding to the reference model (55). Calculate the storable period.
  • the storable period calculation unit (63) calculates an index indicating the degree of dissimilarity of the “time series data of the sugar content and the water content of the fresh product” with respect to the reference model (55) as a deterioration index indicating the degree of deterioration of the fresh product. .
  • the storable period calculation unit (63) of the present embodiment uses “negative log likelihood” as a deterioration index. This deterioration index increases as the freshness of the fresh product decreases (that is, as the degree of deterioration increases).
  • the storable period calculation unit (63) creates data indicating a change over time of the calculated deterioration index (see (h) in FIG. 6). Then, the storable period calculation unit (63) sets a period from the start of storage of the perishables until the deterioration index reaches a predetermined reference index value as a storable period.
  • the storable period calculation unit (63) of the present embodiment determines the reference index value based on the standard deviation of the deterioration index. However, the reference index value may be determined based on an average value, skewness, kurtosis, or the like of the deterioration index.
  • the storable period calculation unit (63) calculates the storable period for each of all the reference models (55) stored in the model storage unit (73).
  • the storable period calculated by the storable period calculating unit (63) is recorded in the storable period storage unit (74) in a state where the storable period is associated with the reference model (55) used in calculating the storable period. .
  • the internal environment condition calculation unit (64) of the information creation device (50) is used to create the reference model (55), and obtains “time series data of the freshness index” in the storage (1). Calculate environmental conditions.
  • the in-compartment environmental condition calculation unit (64) calculates, for example, the average value of each environmental index (in this embodiment, the temperature, relative humidity, oxygen concentration, and carbon dioxide concentration of the in-compartment air) of the storage (1) at this time. Is calculated, and a set of average values of the respective environmental index values is set as the environmental condition in the storage of the storage (1).
  • the in-compartment environmental condition calculation section (64) calculates the in-compartment environmental conditions for each of all the reference models (55) stored in the model storage section (73).
  • the internal environmental conditions of the storage (1) calculated by the internal environmental condition calculating unit (64) are recorded in the internal environmental condition storage unit (75) in a state of being associated with the individual reference models (55). You.
  • the information creating device (50) uses the time-series data obtained when the perishables (7) are actually stored and transported in the transport container (1), which is a storage, to store the model.
  • the reference model (55) stored in the section (73) is updated.
  • the operation of updating the reference model (55) by the information creating device (50) will be described with reference to FIGS.
  • the data acquisition unit (81) of the information creating device (50) uses the inside temperature sensor (37) and the inside humidity sensor ( 38)
  • the measurement value of the oxygen concentration sensor (47), the measurement value of the carbon dioxide concentration sensor (48), and the measurement value of the freshness index sensor (15) are acquired at predetermined time intervals (for example, every few minutes). I do.
  • the data acquisition unit (81) records the acquired measurement values of the sensors (15, 37, 38, 47, 48) in the data storage unit (71).
  • the data storage unit (71) stores time-series data of the measurement values of the sensors (15, 37, 38, 47, 48) acquired by the data acquisition unit (81).
  • the feature amount extraction unit (61) of the information creation device (50) is configured to extract, from the data stored in the data storage unit (71), the time-series data of the measurement value of the freshness index sensor (15) (that is, the freshness index). Time series data of the sugar content and the water content) are extracted, and the extracted time series data of the sugar content and the water content are recorded in the feature amount storage unit (72).
  • the indoor environment control system (10) of the present embodiment includes the plurality of state index sensors (15). Therefore, the feature quantity extraction unit (61) creates time-series data in which the arithmetic mean values of the measurement values of the state index sensors (15) are arranged in time series, and uses this time-series data as the time series of the freshness index. The data is recorded in the feature amount storage unit (72) as data.
  • the model updating unit (62) of the information creating device (50) reads out the time series data of the freshness index (the sugar content and the water content in the present embodiment) from the feature storage unit (72).
  • the model updating unit (62) performs the same arithmetic processing as the above-described process of creating the reference model (55), and creates frequency distributions for the sugar content and the water content from the read time-series data of the freshness index. That is, the time series data of the freshness index is normalized (see (b) of FIG. 5), the trend component is extracted from the normalized data (see (c) of FIG. 5), and the freshness index of the extracted trend component is extracted. (See FIG. 5 (d)).
  • the model updating unit (62) reads the frequency distribution of the freshness index stored in the model storage unit (73) (that is, the frequency distribution of the freshness index used when creating the current reference model (55)). . Then, the model updating unit (62) converts the frequency distribution of the freshness index created based on the time series data of the freshness index read from the feature amount storage unit (72) into the freshness index of the freshness index read from the model storage unit (73). By adding to the frequency distribution, a frequency distribution of the freshness index for update is created. The model updating unit (62) creates a frequency distribution of a freshness index for updating for each of the sugar content and the water content.
  • the model updating unit (62) creates a “mixed Gaussian model for updating” in which the frequency distribution of the freshness index for updating is approximated by a linear combination of a plurality of Gaussian functions (see (e) in FIG. 5). ).
  • the combined Gaussian model for updating the sugar content (see (e) of FIG. 6) and the updated Gaussian mixture model for the moisture content (see (f) of FIG. 6) are updated.
  • the model updating section (62) records the updated reference model (55) in the model storage section (73).
  • the communication terminal (100) transmits a designated storage, which is a type of fresh food designated by the user, to the information creating device (50).
  • the designated information acquisition unit (82) of the information creating device (50) acquires the designated storage sent by the communication terminal (100), and records the acquired designated storage in the designated information storage (76).
  • the information creation unit (65) of the information creation device (50) reads the designated storage recorded in the designated information storage unit (76).
  • the storable period specifying unit (66) of the information creating unit (65) reads the storable period corresponding to the designated storage item from the storable period storage unit (74), and selects storage condition information from the read storable periods. Specify multiple storage periods to be included in.
  • the recommended environment specifying unit (67) of the information creating unit (65) reads the internal environment condition corresponding to the designated storage from the internal environment condition storage unit (75), and from among the read internal environment conditions, Then, a plurality of indoor environmental conditions to be included in the storage condition information are specified.
  • the information creating unit (65) uses the plurality of storable periods specified by the storable period specifying unit (66) and the plurality of in-store environmental conditions specified by the recommended environment specifying unit (67) to store storage condition information. Create Specifically, the information creating unit (65) creates, as storage condition information, information in which a plurality of indoor environment conditions and a storable period corresponding to each indoor environmental condition are paired.
  • FIG. 7 shows an example of the storage condition information.
  • the storage condition information shown in FIG. 7 includes information that “if the temperature in the refrigerator is kept at 5 ° C. and the composition of the air in the refrigerator is not controlled, the freshness of the designated storage material can be kept for two weeks”; If the temperature in the refrigerator is kept at 5 ° C, the oxygen concentration in the refrigerator air is maintained at 7%, and the carbon dioxide concentration in the refrigerator air is maintained at 2%, the freshness of the designated storage can be maintained for six weeks. Information ".
  • the information creating unit (65) transmits the created storage condition information to the output unit (83).
  • the output unit (83) transmits the obtained storage condition information to the user's communication terminal (100) by wireless communication.
  • the storage condition information transmitted to the communication terminal (100) is displayed on a display device of the communication terminal (100) in a readable state by the user.
  • the information creating unit (65) may create storage condition information including one in-compartment environmental condition and one corresponding storable period.
  • the communication terminal (100) transmits, to the information creating device (50), a designated storage, which is a type of fresh food designated by the user, and a designated period, which is a storage period designated by the user.
  • the designated information acquisition unit (82) of the information creating device (50) acquires the designated storage and the designated period transmitted by the communication terminal (100), and stores the acquired designated storage and the designated period in the designated information storage unit (76). To record.
  • the information creating unit (65) of the information creating device (50) reads out the designated storage and the designated period recorded in the designated information storage unit (76).
  • the recommended environment specifying unit (67) of the information creating unit (65) specifies one storage environment condition corresponding to the designated storage and the specified period from the storage environment condition storage unit (75), and specifies the specified storage environment. Read the conditions as recommended environment. Then, the information creating unit (65) sets the recommended environment specified by the recommended environment specifying unit (67) as storage condition information.
  • This storage condition information is information that "in order to maintain the freshness of the designated storage material for the designated period, the environment inside the refrigerator must be kept at the recommended environment specified by the recommended environment specifying unit (67)".
  • the information creating unit (65) transmits the created storage condition information to the output unit (83).
  • the output unit (83) transmits the obtained storage condition information to the user's communication terminal (100) by wireless communication.
  • the storage condition information transmitted to the communication terminal (100) is displayed on a display device of the communication terminal (100) in a readable state by the user.
  • the communication terminal (100) transmits, to the information creating device (50), a designated storage, which is a type of fresh food designated by the user, and a designated environment, which is an environment inside the refrigerator, designated by the user.
  • the designated information acquisition unit (82) of the information creation device (50) acquires the designated storage and the designated environment transmitted by the communication terminal (100), and stores the acquired designated storage and the designated environment in the designated information storage unit (76). To record.
  • the information creating unit (65) of the information creating device (50) reads out the designated storage and the designated environment recorded in the designated information storage unit (76).
  • the storable period specifying unit (66) of the information creating unit (65) specifies one storable period corresponding to the designated storage item and the designated environment from the storable period storage unit (74), and specifies the specified storable period. read out.
  • the information creating unit (65) uses the storable period specified by the storable period specifying unit (66) as storage condition information.
  • This storage condition information includes information that "when the in-compartment environment is maintained in the designated environment, the freshness of the designated storage can be maintained over the storable period specified by the storable period specifying unit (66)". It is.
  • the information creating unit (65) transmits the created storage condition information to the output unit (83).
  • the output unit (83) transmits the obtained storage condition information to the user's communication terminal (100) by wireless communication.
  • the storage condition information transmitted to the communication terminal (100) is displayed on a display device of the communication terminal (100) in a readable state by the user.
  • the information creation device (50) of the present embodiment includes a model storage unit (73), an information creation unit (65), and an output unit (83).
  • the model storage unit (73) uses the physical quantity indicating the freshness of the fresh thing as the freshness index, and stores the fresh thing stored in the “storage (1) controlled so that the environment inside the warehouse becomes a predetermined setting environment”.
  • the reference model (55) created from the time series data of the freshness index is stored.
  • the information creation unit (65) stores, in the model storage unit (73), the reference model (55) with storage condition information that is information relating to “conditions for storing fresh food in the storage (1) while keeping freshness”. Create based on
  • the output unit (83) outputs the storage condition information created by the information creating unit (65).
  • the model storage unit (73) stores the reference model (55).
  • the reference model (55) is created from time-series data of a freshness index obtained when fresh foods are stored in the “storage (1) where the environment inside the storage is controlled to a predetermined setting environment”. That is, the reference model (55) is created based on “time series data of the freshness index” which is objective data.
  • the information creating unit (65) creates storage condition information using the reference model (55).
  • the storage condition information is information on a condition for storing fresh food in the storage (1) while maintaining freshness (that is, storage condition).
  • the output unit (83) outputs the storage condition information created by the information creating unit (65) for providing to the user. Then, the storage condition information output from the output unit (83) is provided to the user of the information creating device (50).
  • the reference model (55) is configured to store “perishables of the same type as the perishables to be stored” in “the storage controlled so that the environment inside the storage becomes a predetermined setting environment”. This is created based on the “time series data of the freshness index” obtained at the time of actual storage in “”. For this reason, the storage condition information created by the information creation unit (65) based on the reference model (55) is information relating to storage conditions suitable for fresh food to be stored. Therefore, according to the present embodiment, it is possible to provide the user with storage condition information relating to storage conditions suitable for the fresh food to be stored by the user.
  • the information creation device (50) of the present embodiment includes a designated information acquisition unit (82) for acquiring the type of fresh food designated by the user.
  • the model storage unit (73) stores the reference model (55) for each of a plurality of types of fresh products.
  • the information creating unit (65) creates storage condition information based on the “reference model (55) corresponding to the type of fresh product acquired by the designated information acquiring unit (82)”.
  • the model storage unit (73) stores the reference models (55) corresponding to each of the plurality of types of perishables.
  • the information creating unit (65) creates storage condition information on the perishables based on the reference model (55) corresponding to the type of perishables specified by the user. For this reason, the storage condition information relating to the perishables of the type specified by the user can be created by the information creating device (50).
  • the storage condition information output from the output unit (83) is provided to the user of the information creating device (50). For this reason, a user who wants to store perishables can obtain storage condition information relating to the type of perishables designated by the user.
  • the information creation device (50) of the present embodiment includes a model storage unit (73), a designated information acquisition unit (82), an information creation unit (65), and an output unit (83).
  • the model storage unit (73) stores the freshness of the freshness stored in the storage (1) controlled such that the environment in the storage becomes a predetermined setting environment when a physical quantity indicating the freshness of the freshness is used as a freshness index.
  • the reference model (55) created from the time series data of the index is stored for each of a plurality of types of fresh products.
  • the designated information acquisition unit (82) acquires the type of fresh food designated by the user.
  • the information creating unit (65) relates to a condition for storing the designated storage in the storage (1) while maintaining the freshness when the perishables of the type acquired by the designated information acquiring unit (82) are designated as the designated storage.
  • Storage condition information which is information, is created based on the reference model (55) corresponding to the designated storage item.
  • the output unit (83) outputs the storage condition information created by the information creating unit (65).
  • the model storage unit (73) stores the reference models (55) corresponding to each of the plurality of types of perishables.
  • the reference model (55) is created from “time series data of the freshness index” obtained when fresh food is stored in the “storage (1) in which the environment inside the storage is controlled to a predetermined environment”. You.
  • the information creating unit (65) creates storage condition information related to the designated storage based on the reference model (55) corresponding to the designated storage specified by the user. Then, the storage condition information output from the output unit (83) is provided to the user of the information creating device (50). For this reason, a user who wants to store perishables can obtain storage condition information relating to the designated storage designated by the user.
  • the information creating unit (65) includes a storable period, which is a “period in which fresh food can be stored in the storage (1) while keeping freshness”, and a “fresh food in the storage (1).
  • the storage condition information including at least one of the recommended environment which is the "in-store environment of the storage (1) for storing and keeping freshness" in 1) is created.
  • the storage condition information created by the information creating unit (65) includes one or both of a storable period and a recommended environment.
  • the information creation unit (65) specifies a storable period that is a period during which the designated storage can be stored in the storage (1) while maintaining freshness, and the specified storable period. Is included in the storage condition information.
  • the model storage unit (73) stores a reference model (55) for each type of fresh food for each of a plurality of indoor environments. That is, the model storage unit (73) stores, for each of the plurality of types of perishables, a plurality of reference models having different environments in the storage (1) for storing perishables.
  • a storable period which is a “period in which fresh food can be stored in the storage (1) while keeping freshness”, is specified for each of the plurality of storage environments, and “
  • the storage condition information includes a pair of the storage environment and the storage period corresponding to each storage environment.
  • the information creation unit (65) specifies the storable period, which is the “period during which the designated storage item can be stored in the storage (1) with freshness”, for each of the plurality of storage environments, and “ The internal environment "and the" storable period corresponding to each internal environment "are paired and included in the storage condition information.
  • each storable period is a period during which the designated storage (fresh food) can be stored while keeping the freshness in the “storage (1) controlled so that the environment inside the warehouse becomes the corresponding environment inside the warehouse”.
  • the designated information acquisition unit (82) can acquire a designated period that is a “perishable product storage period” designated by the user. That is, the information creating device (50) is configured to be able to acquire the designated period.
  • the information creating unit (65) creates storage condition information including the recommended environment. That is, the information creating unit (65) specifies the recommended environment, and includes the specified recommended environment in the storage condition information. This recommended environment is an environment inside the storage (1) for maintaining the freshness of the designated storage (fresh food) stored in the storage (1) over a specified period.
  • the designated information acquisition unit (82) can acquire a designated environment that is a cabinet environment designated by the user. That is, the information creating device (50) is configured to be able to acquire the designated environment. Further, the information creating unit (65) of the information creating device (50) creates storage condition information including “storage period in the designated environment”. That is, the information creating unit (65) specifies the storable period in the designated environment, and includes the specified storable period in the storage condition information.
  • the storable period is a period during which the designated storage (fresh food) can be stored while maintaining its freshness in the “storage (1) in which the inside environment is controlled to the designated environment”.
  • the information creation device (50) of the present embodiment includes a data acquisition unit (81) and a model update unit (62).
  • the data acquisition unit (81) acquires time-series data of a freshness index of a fresh thing stored in the storage (1).
  • the model updating unit (62) uses the time series data of the freshness index acquired by the data acquiring unit (81) to store the time series data in the storage (1) when the data acquiring unit (81) acquires the time series data. Update the reference model (55) corresponding to "wasted perishables".
  • the model updating unit (62) updates the reference model (55) using the time series data of the freshness index acquired by the data acquiring unit (81). Therefore, if “time series data of freshness index” is obtained during the period when fresh food is actually stored in the storage (1), it is possible to improve the reference model (55) by using the time series data. Become.
  • the information creation unit (65) determines whether or not the freshness of the fresh product is maintained, by determining whether the similarity of the time-series data of the freshness index with respect to the reference model (55) or non-similarity. The determination is made based on the standard deviation, average value, skewness, or kurtosis of the index indicating the similarity.
  • the “similarity or dissimilarity of the time series data of the freshness index with respect to the reference model (55)” is indicated in the determination of the freshness of the fresh product in the information creation unit (65).
  • the standard deviation, average value, skewness, or kurtosis of the index is used.
  • the reference model (55) stored in the model storage unit (73) has a normal model created from time-series data of a freshness index in a state where freshness of a fresh product is maintained. At least one of a model and a deterioration model created from time-series data of a freshness index in a state where freshness of fresh food is impaired is included.
  • the reference model (55) stored in the model storage unit (73) is created from time series data of at least one of the sugar content and the water content, which are freshness indexes. That is, the reference model (55) stored in the model storage unit (73) is created based on one or both of the time series data of the sugar content of the fresh product and the time series data of the water content of the fresh product.
  • the in-compartment environment control system (10) of the present embodiment includes an information creation device (50) of the present embodiment, a refrigerating device (20) that performs a refrigerating cycle to adjust the in-compartment temperature of the storage (1), An air composition adjusting device (40) that adjusts the composition of the air in the storage (1) by supplying the adjusted air to the storage (1).
  • the reference model (55) used by the information creation device (50) of the present embodiment is not limited to the one created from the time series data of the sugar content and the water content of the fresh product.
  • the information creating device (50) of the present embodiment may be configured to create the storage condition information using a reference model created from one of the time series data of the sugar content and the water content of the fresh product. Good. Further, the information creating device (50) of the present embodiment uses the hardness of a fresh thing as a freshness index, and creates storage condition information using a reference model created from time-series data of the hardness of the fresh thing. It may be configured. Further, the information creating device (50) of the present embodiment is configured to create the storage condition information using the reference model created from the time series data of the sugar content, the water content, and the hardness of the fresh product. You may.
  • a hardness meter using a laser Doppler method can be used as the freshness index sensor (15) for measuring the hardness of a fresh product, which is a freshness index.
  • a hardness meter using the laser Doppler method irradiates a target object with laser light, measures a vibration spectrum of the target object, and measures the hardness of the target object based on a change in the vibration spectrum.
  • a freshness index used when creating a reference model at least one of hue, lightness, and chroma is used as the acidity, maturity, and color of a fresh product. And chlorophyll fluorescence may be used.
  • the reference model (55) used by the information creation device (50) of the present embodiment is not limited to the “normal model created from the time series data of the freshness index in a state where the freshness (7) is kept fresh”.
  • the information creating device (50) of the present embodiment uses the “deterioration model created from the time series data of the freshness index in a state where the freshness of the fresh product (7) is impaired” as a reference model, and stores the storage condition information. It may be configured to create it.
  • the storable period calculation unit (63) of the information creation device (50) calculates an index indicating the similarity of the time series data of the sugar content and the water content of the fresh product (7) to the reference model (55), It is calculated as a deterioration index indicating the degree of deterioration of.
  • the storable period calculation unit (63) uses, for example, “log likelihood” as a deterioration index. This deterioration index increases as the freshness of the fresh product decreases (that is, as the degree of deterioration increases).
  • the information creating device (50) of the present embodiment uses the “normal model created from the time series data of the freshness index in a state where the freshness (7) is kept fresh” as the first reference model,
  • the storage condition information may be created using the “deterioration model created from the time series data of the freshness index in a state where the freshness of the fresh product (7) is impaired” as the second reference model.
  • the storable period calculation unit (63) of the information creating device (50) calculates, for example, the storable period calculated from the first reference model (normal model) and the second reference model (deterioration model). The average value of the calculated storable period is set as the storable period as the final calculation result.
  • the installation target of the information creation device (50) of the present embodiment is not limited to the “in-compartment environment control system (10) attached to the transport container (1)”.
  • the information creation device (50) of the present embodiment is provided, for example, in a centralized monitoring device that is installed at a location away from the transport container (1) and centrally monitors a large number of transport containers (1). Is also good.
  • the information creation device (50) of the present embodiment includes a data acquisition unit (81), a data storage unit (71), a feature amount extraction unit (61), a feature amount storage unit (72), and a model update unit (62). It may be omitted.
  • the information creation device (50) receives the updated reference model (55) outside the information creation device (50), and stores the received updated reference model (55) in the model storage unit (73). It may be configured to record.
  • the information creation device (50) of the present embodiment may be configured to create storage condition information for one kind of fresh food.
  • the target to which the information creating device (50) of the present embodiment transmits the storage condition information is not limited to the communication terminal (100) of the user.
  • the information creation device (50) of the present embodiment may transmit the storage condition information to, for example, the operation panel of the container refrigeration device (20).
  • the storage conditions are displayed on the liquid crystal display of the operation panel of the container refrigeration system (20).
  • the information creating device (50) of the present embodiment may transmit the storage condition information to the air composition adjusting device (40).
  • the recommended environment specifying unit (67) specifies the recommended environment.
  • the recommended environment is the internal environment necessary to maintain the freshness of the specified storage items for the specified period (specifically, the temperature of the air inside the storage container (1), oxygen concentration, carbon dioxide concentration, etc.). (Set value).
  • the output unit (83) of the information creating device (50) transmits the recommended environment specified by the recommended environment specifying unit (67) to the controller of the air composition adjusting device (40).
  • the controller of the air composition adjusting device (40) that has received the recommended environment controls the operation of the air composition adjusting device (40) such that the environment inside the storage container (1) becomes the recommended environment.
  • the transport container (1) to which the information creation device (50) of the present embodiment is attached is not limited to a marine transport container, but may be a land transport container. Further, the transportation container (1) for land transportation to which the information creation device (50) of the present embodiment is attached may be a container that can be attached to and detached from the body of a truck or a trailer, or may be integrated with the body. A container that cannot be easily removed from the vehicle body may be used.
  • the installation target of the information creating device (50) of the present embodiment is not limited to the transport container (1).
  • the information creation device (50) of the present embodiment may be installed in, for example, a refrigerated warehouse or a commercial refrigerator.
  • the information creating device (50) of the present embodiment is installed in a storage for shipping adjustment, which is installed in a farmhouse or a food factory and stores fresh products, and is installed in a back yard of a large retail store to produce products.
  • the present disclosure is useful for the information creating device and the in-compartment environment control system.
  • Transport container storage
  • Storage environment control system 20
  • Container refrigeration equipment refrigeration equipment
  • Air composition adjustment device 50
  • Information creation device 55
  • Reference model 62
  • Model update unit 65
  • Information creation unit 73
  • Model storage unit 81
  • Data acquisition unit 82
  • Designated information acquisition unit 83

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Abstract

La présente invention concerne un dispositif de production d'informations de conditions de stockage (50) dans lequel une unité de stockage de modèle (73) stocke un modèle de référence créé à partir de données chronologiques d'un indice de fraîcheur d'articles périssables stockés dans un conteneur de stockage. Une unité de production d'informations (65) du dispositif de production (50) produit des informations de conditions de stockage sur la base du modèle de référence (55). Les informations de conditions de stockage sont des informations concernant une condition pour stocker un article périssable dans le contenant de stockage tout en préservant la fraîcheur. Une unité de sortie (83) du dispositif de production (50) fournit les informations de conditions de stockage produites par l'unité de production d'informations (65).
PCT/JP2019/029554 2018-07-27 2019-07-26 Dispositif de production d'informations de conditions de stockage et système de commande d'environnement intérieur de conteneur WO2020022516A1 (fr)

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