JP2018136089A - Management device and power feeding allocation method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a management device performing precooling in consideration of consumption of a cold storage amount after the precooling: and to provide a power feeding allocation method.SOLUTION: When a cold storage 1 present at a management point is classified into a cold storage (first cold storage) where required power feeding time and maximum cooling time are the same and a cold storage (second cold storage) where the maximum cooling time is longer than the required power feeding time, the power feeding schedule time of the first cold storage is allocated to either of the power feeding facilities where vacant time as a time zone to which the power feeding schedule time is allocated is longer than the required power feeding time for the first cold storage, of the plurality of power feeding facilities, in a period between the time going back from the power feeding completion time as the time when the power feeding to the cold storage must be completed, by the required power feeding time from the first cold storage, and the power feeding completion time.SELECTED DRAWING: Figure 8

Description

  The present disclosure relates to a management apparatus and a power supply allocation method.

  Articles such as fresh food that need to be transported and delivered in a state of maintaining a low temperature are usually loaded into a cool box having a heat insulating effect and distributed. In a physical distribution system using a cool box, the goods are held at a predetermined temperature or lower by cooling the interior of the cool storage body of the cool box during the transport of the articles. That is, pre-cooling of the cool box is necessary as advance preparation.

  As such a physical distribution system, for example, Patent Document 1 discloses a system for calculating a cold storage start time based on a use start time of a delivery device obtained from a delivery plan of articles in a physical cycle and temperature history information related to the delivery device. Is disclosed.

Japanese Patent No. 40622120

  In a physical distribution system using a cool box, it is necessary to keep the inside of the cool box below a predetermined temperature for a required cool time set longer than the delivery time. Pre-cooling of the cool box is performed, for example, by supplying power by connecting the cool box to a power supply facility. However, in the management base of the physical distribution system as disclosed in Patent Document 1, pre-cooling is performed with a limited number of power supply facilities for all of the plurality of cool storage units. When there is a time from when an article is loaded into a warehouse to the departure, the amount of cold stored in the pre-cooled cold storage may be consumed. Thus, it is desired to prevent a situation in which the necessary cold insulation time cannot be secured due to consumption of the cold storage amount.

  An object of the present disclosure is to provide a management device and a power supply allocation method capable of performing pre-cooling in consideration of consumption of a cold storage amount after pre-cooling.

  The management device of the present disclosure is a management device that allocates in advance a power supply scheduled time, which is a time when power supply for pre-cooling of at least one cold storage is performed, to any of a plurality of power supply facilities, When the necessary cool keeping time required to keep the inside of the cool box at a predetermined temperature or less is determined in advance for each cool box, the cool box is kept below the predetermined temperature by the necessary cool time. Information related to the required power supply time, which is the power supply time for performing precooling necessary to maintain, and the maximum cold storage time, which is the time during which the inside of the cold storage can be kept below the predetermined temperature when precooling is performed to the maximum An acquisition unit for acquiring information, the cold storage, a first cold storage in which the required cold storage time and the maximum cold storage time are the same, and a second cold storage in which the maximum cold storage time is longer than the required cold storage time, Classified In this case, among the plurality of power supply facilities, the first time for any one of the power supply facilities in which an idle time that is a time zone in which a power supply scheduled time can be allocated is longer than the required power supply time of the first cold storage. A control unit that allocates the scheduled power supply time of the cool box between the power supply completion time, which is the time at which the power supply of the cool box should be completed, and the power supply completion time, which is a time that is earlier than the necessary power supply time of the first cool box. And having.

  The power supply allocation method according to the present disclosure is a power supply allocation method in which a power supply scheduled time, which is a time when power supply for pre-cooling of at least one cold storage is scheduled, is allocated in advance to any one of a plurality of power supply facilities. When the necessary cool keeping time required to keep the inside of the cool cool box at a predetermined temperature or less is determined in advance for each cool cool box, the predetermined temperature is kept within the cool cool box for the necessary cool time. Information on the required power supply time, which is the power supply time for precooling necessary to keep below, and the maximum cold insulation that is the time during which the inside of the cold storage can be kept below the predetermined temperature when precooling is performed to the maximum Information about time, and the cold storage is a first cold storage in which the required cold storage time and the maximum cold storage time are the same, and a second cold storage in which the maximum cold storage time is longer than the required cold storage time. When to be classified In addition, among the plurality of power supply facilities, the first cold insulation for any one of the power supply facilities in which a free time that is a time zone in which a scheduled power supply time can be allocated is longer than the necessary power supply time of the first cold storage. The power supply scheduled time of the storage is assigned between the time when the power supply completion time, which is the time at which the power supply of the cold storage is to be completed, is traced back by the necessary power supply time of the first cold storage, and the power supply completion time.

  According to the present disclosure, it is possible to provide a management device and a power supply allocation method that can perform pre-cooling in consideration of consumption of the amount of cold storage after pre-cooling.

The conceptual diagram which shows the structural example of the cold storage management system which concerns on embodiment of this indication Block diagram showing an example of the configuration of the management device Flow chart for explaining power supply allocation processing Diagram showing how multiple groups are sorted The figure which illustrated four cold storages (No. 1-No. 4) which belong to group Gr (1) which is the present process object and whose power supply completion time is 24:00. The figure which illustrated the result as which the management apparatus performed the classification process with respect to group Gr (1) shown in FIG. The figure which shows the result as which the management apparatus performed the sort process with respect to group Gr (1) shown in FIG. Flow chart for explaining the details of optimization processing Time chart showing the estimated power supply time of each power supply facility when power supply allocation processing is not performed Time chart showing how the power supply scheduled time of Unit 4 with the longest required power supply time is allocated in the first cold storage Time chart showing how the power supply schedule time of Unit 1 with the second longest required power supply time was allocated in the first cold storage Determining whether power supply scheduled time can be allocated to the power supply facility 2_1 with respect to the second power supply unit 2 and 3, which is the second cold storage, for the second power supply unit having the longest necessary power supply time Showing time chart Time chart showing an example of adjustment processing of allocated power supply scheduled time Time chart showing how to determine whether it is possible to allocate power supply scheduled time to power supply facility 2_2 for Unit 2 as a processing target Time chart showing an example of adjustment processing of allocated power supply scheduled time Time chart showing how to determine whether or not scheduled power supply time can be assigned to power supply facility 2_3 for Unit 2 as a processing target Time chart showing how the scheduled power supply time for Unit 2 is allocated to power supply facility 2_3 Time chart showing how the power supply schedule time of Unit 3 was allocated Time chart showing an example of allocation of scheduled power feeding time for Unit 3 when adjustment processing of allocated power feeding scheduled time is not performed

  Hereinafter, the cold storage management system 100 according to each embodiment of the present disclosure will be described in detail with reference to the drawings. However, a more detailed description than necessary, for example, a detailed description of already well-known matters or a duplicate description of substantially the same configuration may be omitted.

  The following description and the drawings referred to are provided for those skilled in the art to understand the present disclosure, and are not intended to limit the scope of the claims of the present disclosure.

<System configuration>
FIG. 1 is a conceptual diagram illustrating a configuration example of a cold storage management system 100 according to an embodiment of the present disclosure. As shown in FIG. 1, the cold storage management system 100 includes a plurality of cold storages 1, a plurality of power supply facilities 2, and a management device 3. A cold storage management system 100 in FIG. 1 is an example of a system constructed in one of bases (hereinafter referred to as management bases) that manage a plurality of cold storages 1.

  The cool box 1 is formed so that a part of the cool box 1 can be opened and closed, and can be sealed by storing articles in the inside (inside the box) and closing the door, and has a cool storage body inside, It is a container that can keep the inside temperature at a low temperature by the cold energy stored in the body. The cool box 1 is used, for example, for storing and transporting articles to be delivered at a low temperature (refrigerated items, frozen items, etc.) in the cabinet. The cool box 1 accommodates articles in a warehouse at a management base, and then is mounted on a transport device such as a truck and transported to a delivery destination. In this embodiment, for the sake of simplicity, the article is stored in the cool box 1 at the management base. However, in the present disclosure, the article is stored in the management base that manages the cool box 1 and the cool box 1. It may be different from the place to do.

  The power supply facility 2 is a facility that performs power supply for pre-cooling the cool box 1. In addition, pre-cooling means cooling the inside of the cool box 1 before using the cool box 1 and storing cold heat in the cool storage body. When the cool box 1 is connected to the power supply facility 2, the cool storage body of the cool box 1 is cooled by a cooling device (not shown) built in the cool box, and cold heat is stored. In the following, power supply for pre-cooling refers to storing cold heat in the regenerator and / or cooling the inside of the cool box 1 and / or the air in the cool box 1 built in the cool box 1. An operation for storing electric power necessary for supplementary operations such as a blower and various sensors for circulating the air.

  The management device 3 is a device that manages the cold storage 1 at the management site. The management device 3 is a computer such as a PC (Personal Computer). FIG. 2 is a block diagram illustrating an example of the configuration of the management device 3. As shown in FIG. 2, the management device 3 includes an acquisition unit 31, a memory 32, a control unit 33, a cooling device 34, a cool storage body temperature sensor 35, and a display unit 36.

  The acquisition unit 31 acquires various types of information used for power supply allocation processing, which will be described later, and stores the information in the memory 32. Specifically, the acquisition unit 31 is, for example, a communication device that communicates with the cold storage 1 present in the management base, or an input for inputting various information used by the person in charge of management at the management base for the power supply allocation process. Including devices.

  The memory 32 is, for example, a ROM (Read Only Memory) storing a control program, a RAM (Random Access Memory) operating as a working memory, a flash memory for storing various information used for power supply allocation processing described later, etc. Includes various storage media.

  The control unit 33 is a control device such as a CPU (Central Processing Unit), for example, and implements the function of the management device 3 by reading and executing a control program stored in the memory 32. For example, the control unit 33 performs a power supply allocation process in which the power supply time of the cool box 1 is allocated to any of the plurality of power supply facilities at the management base.

  When the power supply facility 2 to be described later is connected to the cool box 1, the cooling device 34 cools the cool storage body of the cool box 1 and performs pre-cooling and / or cools the inside of the box. The cooling device 34 includes, for example, an evaporator, a compressor, a condenser, an expansion valve, and the like (not shown), stores cold heat in the cold storage body by heat exchange, and / or cools the inside of the refrigerator.

  The cool storage body temperature sensor 35 is a temperature sensor attached to the cool storage body, and transmits information related to the temperature of the cool storage body to the control unit 33.

  The display unit 36 is a display device such as a liquid crystal display or an organic EL display, and performs display according to the control of the control unit 33. Specifically, the display unit 36 displays the result of the power supply allocation process performed by the control unit 33 described below.

  In the following description of the power supply allocation process, for the sake of simplicity, the process executed by the control unit 33 of the management apparatus 3 is simply described as a process executed by the management apparatus.

<Description of power supply allocation process>
Hereinafter, the power supply allocation process of the management apparatus 3 at a certain management site will be described in detail. First, the premise for the management apparatus 3 to perform power supply allocation processing will be described.

[Assumption 1]
As shown in FIG. 1, at least one cool box 1 and a plurality of power supply facilities 2 exist at the management base. In the present disclosure, the numbers of the cool box 1 and the power supply facility 2 are not particularly limited.

[Assumption 2]
Each of the cold storages 1 has a cold storage capacity. In this specification, the cold insulation capacity is an ability calculated based on the amount of cold heat (cold storage amount) stored in the cold storage body included in the cold storage box 1, and keeping the inside of the cold storage box 1 in a predetermined temperature range. It means time that can be done. The cold storage capacity of each cold storage 1 is not necessarily the same. Specifically, for example, a certain cool box 1 has a cool capacity for 5 hours at the maximum, and the other cool boxes 1 have a cool capacity for 3 hours at the maximum.

As a method for estimating the cold insulation capacity for each cold box 1, for example, there are the following methods. That is, a cold storage solvent having an additive concentration adjusted so as to have a predetermined temperature gradient characteristic between the freezing start temperature and the freezing end temperature is used as the cold storage body of the cool box 1. The temperature of the cold storage solvent is detected by, for example, a sensor. Since the data such as the freezing start temperature, freezing end temperature, and temperature gradient characteristics of the cold storage solvent are known, the number of hours that the cool box 1 is currently based on the detected temperature obtained from the sensor and the data related to the temperature gradient characteristics It is possible to calculate whether or not it has a cold insulation capacity for a minute. Such a technique is known and disclosed in, for example, Reference 1.
[Reference 1] JP-A-7-318215

Or the surface temperature of the box which stores a cool storage body, the cool storage body in the ratio of the capacity | capacitance of the cool storage body which has the temperature below a predetermined threshold in the whole capacity | capacitance of the cool storage body accommodated in the cool box 1 The spatial temperature distribution of the regenerator is estimated based on information indicating the surface temperature of the regenerator or the temperature inside the regenerator, etc., and a predetermined threshold value in the overall estimated spatial temperature distribution of the regenerator The remaining amount of cold storage is calculated on the basis of the ratio of the portion exceeding. And the amount of cold heat per unit time released from the inside of the cool box 1 is determined based on the difference between the temperature outside the cool box 1 and the temperature of the internal space of the cool box 1, for example. The amount of cold heat per unit time released from the inside to the outside may be obtained, and the coolable time may be calculated based on the obtained amount of cold heat and the obtained cold storage remaining amount. Such a technique is disclosed in Reference Document 2, for example.
[Reference 2] Japanese Patent Application No. 2015-198441

[Assumption 3]
A delivery plan is determined in advance for the cold storage 1 that is the target of the power supply allocation process in the management base. The delivery plan is a plan for delivering the cold storage 1 containing the articles to other bases, depending on a departure time that is a time to depart from the management base, an arrival time that is a time to arrive at the delivery destination, and the like. Identified.

[Assumption 4]
Based on the delivery plan, the necessary cold insulation capacity for each cold storage 1, in other words, the time required to keep the inside of the cold storage 1 at a predetermined temperature or less is determined. In the present specification, this is referred to as necessary cold insulation time. Specifically, for example, it is 4 hours from the departure time to the arrival time, in other words, the necessary cool time of the cool box 1 for which a delivery plan that takes 4 hours for delivery is made is 4 hours.

[Assumption 5]
Based on the required cold insulation time, it is possible to calculate the power supply time necessary for completing the pre-cooling of the cold storage 1 in the power supply facility 2. In the present specification, this is referred to as necessary power supply time. Note that the power supply capabilities (for example, wattage) of the plurality of power supply facilities 2 are the same. In other words, no matter which power supply facility 2 is used for power supply, the time required from the start of power supply to the completion of power supply in the cool box 1 having the same necessary power supply time is the same.

  Specifically, for example, if the cool box 1 to which a delivery plan having a required cool time of 5 hours is assigned has a cool capacity for 2 hours at the present time, the cool capacity for 3 hours is supplied by power supply. Need to get. As a method of obtaining the required power supply time from the required cold insulation time, for example, there are the following methods.

  That is, as disclosed in the above-mentioned Reference Document 1, the internal temperature history information of the cool box 1 is accumulated, the internal internal temperature T0 is determined in advance, and the internal temperature T0 is determined. A time integral value S2 of the internal temperature is obtained for the internal temperature curve leading to the start of power supply, and the power supply time (t1) based on the integral value S2 from the relational expression or correspondence map between the integrated value S2 and the power supply time (t1). By calculating the necessary power supply time, which is the estimated time required for power supply, can be estimated.

  Alternatively, as disclosed in Reference Document 2, for example, the remaining amount of cold storage is C [J], and the amount of cold stored in the cold storage body when the entire cold storage body is solidified is D [J]. When the ability of the cold storage 1 to pre-cool the interior when connected to the power supply facility 2 is E [W], the required power supply time can be calculated as (DC) / E [seconds]. In addition, about the amount of cold heat D [J] stored in the cold storage body when the entire cold storage body is solidified and the ability E [W] of the cold storage 1 to pre-cool the interior when connected to the power supply facility 2, It may be measured in advance and stored in a memory or the like.

[Assumption 6]
All the refrigerators 1 existing in the management base are grouped in advance. The group means a group of the cold storages 1 classified according to a predetermined standard when there are a plurality of the cold storages 1 at the management base. The predetermined standard is, for example, the departure time in the delivery plan of the cool box 1, the required power supply time, the cool capacity, and the like. The grouping is performed before the start of the power supply allocation process (for example, when a delivery plan for a plurality of coolers 1 is determined).

  The number of the cool box 1 belonging to one group is not particularly limited in the present disclosure. The grouping may be performed by the management device 3, or may be performed by an administrator who manages the cold storage management system 100 at a management site, for example. Further, the criteria for grouping are not particularly limited in the present disclosure, but in the following example, for example, the departure times of the delivery plans are substantially the same (the departure times are planned within a predetermined time range). The case where the cold storage 1 is made into the same group will be described.

  Based on the above assumptions, power supply allocation processing executed by the management apparatus 3 will be described. FIG. 3 is a flowchart for explaining the power supply allocation process. FIGS. 4 to 7 and FIGS. 9 to 19 are conceptual diagrams for explaining specific examples of the power supply allocation process. Before starting the power supply allocation process illustrated in FIG. 3, the management device 3 includes information on the cold storage 1 that is the target of the power supply allocation process, that is, information on the required power supply time, information on the required cold storage time, and the maximum cold storage capacity. And information on the information are read from a memory or the like (not shown).

  In step S1, the management device 3 sorts (sorts) the plurality of groups to which the cool box 1 existing in the management base belongs based on the power supply completion time, which is the time at which power supply should be completed. FIG. 4 is a diagram illustrating an example of sorting a plurality of groups. In FIG. 4, the power supply completion time is a time before the departure time of the cool box 1 belonging to the processing target group, and is the time when the power supply should be completed so that the departure can be surely performed at the departure time in the delivery plan. is there. That is, the power supply completion time is a time calculated backward from the departure time by a time necessary for storing the article in the cool box 1 where the power supply has been completed or mounting the cool box 1 on the transport device. .

  FIG. 4 shows a state in which the four groups are sorted in order of the power supply completion time. That is, in FIG. 4, group Gr (1) (24:00), group Gr (2) (26:00), group Gr (3) (30:00), group Gr (4) (30:00) are sorted in this order. Yes.

  In FIG. 4, the power supply completion times of the group Gr (3) and the group Gr (4) are the same time (30 o'clock). Sorting may be performed based on the above. The other factors are, for example, the number of the cold storages 1 belonging to the group, the length of the required power supply time, the identification number assigned to each cold storage 1 in advance.

  In step S2, the management device 3 classifies the cool box 1 belonging to the current processing target group based on a predetermined criterion. The predetermined standard is whether or not the necessary cold insulation time (cold cold capacity required by the delivery plan) of the cold box 1 is equal to the maximum cold time of the cold box 1. The maximum cool time is a time during which the inside of the cool box can be kept below the predetermined temperature when pre-cooling is performed to the maximum. In other words, the maximum cold storage time is the maximum value of the cold storage capacity of the cold storage 1.

  A specific example will be described below. FIG. 5 is a diagram illustrating four cold storage boxes 1 (No. 1 to No. 4) belonging to the group Gr (1) that is the current processing target and whose power supply completion time is 24:00. As shown in FIG. 5, Unit 1 has a required cool time of 2 hours and a maximum cool time of 2 hours. Unit 2 has a necessary cool time of 5 hours and a maximum cool time of 6 hours. Unit 3 has a required cooling time of 3 hours and a maximum cooling time of 5 hours. Unit 4 has a required cooling time of 3 hours and a maximum cooling time of 3 hours.

  FIG. 6 is a diagram illustrating a result of the management device 3 performing the classification process in step S2 on the group Gr (1) illustrated in FIG. As shown in FIG. 6, the management device 3 classifies the first and fourth machines into “Category 1” indicating that the required cool time and the maximum cool time are the same. Moreover, as shown in FIG. 6, the management apparatus 3 classify | categorizes about the 2nd machine and the 3rd machine into "classification 2" which shows that the maximum cold storage time is longer than required cold storage time. In the present specification, the cool box 1 belonging to “Class 1” is referred to as “first cool box”. Further, the cool box 1 belonging to “Class 2” is referred to as “second cool box”.

  Next, in step S3, the cool box 1 classified in step S2 is sorted in order of long required power supply time for each classification. FIG. 7 is a diagram illustrating a result of the management apparatus 3 performing the sorting process in step S3 on the group Gr (1) illustrated in FIG. As illustrated in FIG. 7, the management device 3 rearranges the first cool box in the order of No. 4 and No. 1 units based on the length of the required power supply time. In addition, as illustrated in FIG. 7, the management device 3 rearranges the second cold storage in the order of No. 2 and No. 3 based on the length of the required power supply time.

  Next, in step S <b> 4, the management device 3 reads information related to the scheduled power supply time of all the power supply facilities 2 from, for example, a memory (not shown). The power supply scheduled time is a time when power supply is scheduled to be performed in the power supply facility 2 for pre-cooling of the cool box 1. The scheduled power supply time of each power supply facility 2 is specified by, for example, a power supply start time and a power supply completion time. Note that the power supply start time is a time after the current time and is a time at which power supply should be started.

  And in step S5, the management apparatus 3 performs the optimization process which optimizes allocation of the power supply scheduled time of each cold storage 1. Details of the optimization processing in step S5 are shown in FIG. FIG. 8 is a flowchart for explaining the details of the optimization processing in step S5 of FIG.

  First, in step S11 of FIG. 8, the management device 3 can assign the scheduled power supply time to the power supply facility 2 having the shortest idle time among the plurality of power supply facilities 2 with the first cold storage as a processing target. It is determined whether or not. The idle time is a value representing the length of time during which no power supply scheduled time is allocated in a certain power supply facility 2 from the power supply start time to the power supply completion time. The process of step S11 is performed with respect to all the 1st cool boxes in the order sorted by step S3. In addition, when there are a plurality of power supply facilities 2 having the same idle time, the management device 3 determines whether or not the power supply scheduled time can be assigned to the power supply facility 2 having a young number assigned in advance, for example. This should be done first.

  Specifically, in step S <b> 11, the management device 3 determines whether the “vacant time of the power supply facility 2” is equal to or longer than the “required power supply time of the processing target cooler 1”. When the “vacant time of the power supply facility 2” is equal to or longer than the “required power supply time of the processing target cold storage 1” (step S11: YES), the management device 3 in step 12 The power supply scheduled time of the processing cooler 1 is assigned so as to go back from the power supply completion time by the required power supply time. On the other hand, when the “vacant time of the power supply facility 2” is not equal to or longer than the “necessary power supply time of the processing-target cold storage 1” (step S11: NO), the management device 3 supplies the power supply facility 2 with the next shortest available time. Step S11 is executed for (Step S13).

  Hereinafter, the processing of steps S11 to S13 illustrated in FIG. 8 will be described with a specific example. FIGS. 9-11 is a figure for demonstrating the case where the electric power allocation process in step S11-S13 is performed with respect to the 1st cold storage in which rearrangement was performed in FIG. FIG. 9 is a time chart showing the scheduled power supply time of each power supply facility when the power supply allocation process is not performed. Moreover, FIG. 10 is a time chart showing a state in which the scheduled power supply time of Unit 4 having the longest required power supply time in the first cold storage is assigned. 9 and 10, the current time and the power supply start time are 17:00. The power supply completion time is 24:00 as described above.

  In FIG. 9, it is assumed that the scheduled power supply time of another group has already been allocated until 20:00 of the power supply facility 2_1, 20:00 of the power supply facility 2_2, and 18:00 of the power supply facility 2_3. Accordingly, the idle time of the power supply facility 2_1 is 4 hours. Further, the idle time of the power supply facility 2_2 is 4 hours. The idle time of the power supply facility 2_3 is 6 hours. Further, the idle time of the power supply facility 2_4 is 7 hours.

  The management device 3 compares the available time (4 hours) of the power supply facility 2_1 with the shortest available time with the scheduled power supply time (3 hours) of the fourth unit of the cold storage 1 (corresponding to step S11 in FIG. 8). Then, it is determined that the scheduled power supply time of the fourth machine can be assigned to the power supply facility 2_1 (step S11 in FIG. 8: YES). Therefore, the management device 3 determines to allocate the scheduled power supply time of the fourth machine to the power supply facility 2_1 (corresponding to step S12 in FIG. 8). When there are a plurality of power supply facilities having the same idle time, for example, the power supply facility 2 having the smallest number may be assigned.

  Here, the management device 3 assigns a scheduled power supply time to the power supply facility 2_1 so as to go back from the power supply completion time of 24:00 by 3 hours that is the required power supply time of the fourth unit. As a result, as shown in FIG. 10, the scheduled power supply time of Unit 4 is assigned to the power supply facility 2_1 from 21:00 to 24:00.

  In the example shown in FIG. 9 and FIG. 10, the necessary power supply time for Unit 4 is 3 hours, which is shorter than the free time of the power supply facility 2_1, which is 4 hours, so the scheduled power supply time for Unit 4 is allocated to the power supply facility 2_1. However, for example, when the free time of the power supply facility 2_1 is shorter than 3 hours (for example, 2 hours) (step S11 in FIG. 8: NO), the management device 3 sets the fourth power supply in the power supply facility 2_1. It is determined that the scheduled power supply time cannot be assigned, and it is determined whether or not the next power supply facility 2 with the shortest available time can be assigned (corresponding to step S13 in FIG. 8).

  As shown in FIG. 10, when the allocation of the scheduled power supply time of Unit 4 having the longest necessary power supply time among the first coolers is completed, the management device 3 next moves to the second of the first coolers. Allocate the scheduled power supply time for Unit 1 with a long required power supply time. FIG. 11 is a time chart showing a state in which the scheduled power supply time of the first unit having the second required power supply time is allocated in the first cold storage in the group Gr (1).

  The management device 3 compares the idle time (1 hour) of the power supply facility 2_1 with the shortest idle time with the scheduled power supply time (2 hours) of the first unit of the cool box 1 (corresponding to step S11 in FIG. 8). Then, it is determined that the scheduled power supply time of Unit 1 cannot be assigned to the power supply facility 2_1 (step S11 in FIG. 8: NO). Thereafter, the management device 3 compares the idle time (4 hours) of the power supply facility 2_2 with the second shortest idle time with the scheduled power supply time (2 hours) of the first unit, and compares the first unit with the power supply facility 2_2. It is determined that the scheduled power supply time can be allocated (step S11 in FIG. 8: YES).

  Then, the management device 3 assigns a scheduled power supply time to the power supply facility 2_2 so that the power supply completion time goes back from 24:00, which is the power supply completion time, by 2 hours, which is the required power supply time of the first unit (step S12 in FIG. 8). Correspondence). As a result, as shown in FIG. 11, the scheduled power supply time of Unit 1 is assigned to the power supply facility 2_2 from 22:00 to 24:00.

  Returning to the description of FIG. 8, in step S <b> 14, the management device 3 determines whether or not the processing of steps S <b> 11 to S <b> 13 has been completed for all the first cold storages. When it determines with the process with respect to all the 1st cold storage completed (step S14: YES), the management apparatus 3 advances a process to step S15. When that is not right (step S14: NO), the management apparatus 3 performs determination of step S11 with respect to the cool storage 1 with long next required electric power supply time among 1st cool storage.

  Next, in step S15, the management device 3 sets the second cold storage as a processing target, and the “vacant time of the power supply facility 2” sets “additional power supply time” to “required power supply time of the processing target cold storage 1”. It is determined whether or not it is longer than the added time. The additional power supply time is a time for performing additional power supply in consideration of the amount of cold energy consumed after the power supply scheduled time ends, in other words, after power supply is completed and before the power supply completion time. The cold storage 1 that has additionally supplied power only during this additional power supply time has the necessary cold storage capacity at the power supply completion time even if the cold storage 1 is left unpowered until the power supply completion time after the completion of power supply. It becomes a state. This is possible because the second cooler, in other words, the cooler 1 whose maximum cooler time is longer than the required power supply time. Details of the method of calculating the additional power supply time will be described later.

  In step S15, when the “vacant time of the power supply facility 2” is longer than the time obtained by adding the “additional power supply time” to the “necessary power supply time of the cold storage 1 to be processed” (step S15: YES), the management device 3 In step S <b> 16, the scheduled power supply time of the cold storage 1 to be processed is assigned to the power supply facility.

  On the other hand, in step S15, when the “vacant time of the power supply facility 2” is not longer than the time obtained by adding the “additional power supply time” to the “necessary power supply time of the cool storage 1 to be processed” (step S15: NO), the management device 3, in step S17, the allocated power supply scheduled time is adjusted. Details of the adjustment processing of the allocated power supply scheduled time will be described later.

  In step S18, the management device 3 determines whether or not adjustment was possible in the adjustment process in step S17. When the adjustment is possible (step S18: YES), the management device 3 assigns the scheduled power supply time with the adjusted content in step S16. On the other hand, when the adjustment is impossible (step S18: NO), the management device 3 performs the determination in step S15 for the power supply facility 2 having the next shortest idle time (step S19).

  In addition, after assigning the scheduled power supply time of the processing target cooler 1 in step S16, in step S20, the management device 3 determines whether or not the processes in steps S15 to S19 have been completed for all the second coolers. Determine. When it determines with the process with respect to all the 2nd coolrs having been completed (step S20: YES), the management apparatus 3 advances a process to step S6 shown in FIG. When that is not right (step S20: NO), the management apparatus 3 performs determination of step S15 with respect to the cool storage 1 whose next required electric power supply time is long among 2nd cool storage.

  Hereinafter, the process of steps S15 to S19 illustrated in FIG. 8 will be described with a specific example. FIGS. 12 to 19 show the assignment of the second and third units as the second cooler after the assignment of the scheduled power supply times for the fourth and first units as the first cooler shown in FIG. 11 is completed. It is a conceptual diagram for demonstrating.

  FIG. 12 shows whether or not the power supply scheduled time can be assigned to the power supply facility 2_1 with the second power supply unit 2 and the third unit being the second cooler as the processing target, It is a time chart which shows a mode that it determines.

  In FIG. 12, the management device 3 first compares the idle time (1 hour) of the power supply facility 2_1 with the shortest idle time with the scheduled power supply time (5 hours + Ta) of Unit 2 (step S15 in FIG. 8). It is determined that the scheduled power supply time of Unit 2 cannot be allocated to the power supply facility 2_1. In this case, the management device 3 performs an adjustment process of the allocated scheduled power supply time (corresponding to step S17 in FIG. 8). Note that Ta is an additional power supply time to be described later, and the length is undecided at this point, but the power supply scheduled time (5 hours + Ta) of Unit 2 is more than the idle time (1 hour) of the power supply facility 2_1. Since it is clearly long, the management device 3 may determine that the scheduled power supply time of the second machine cannot be assigned to the power supply facility 2_1.

  The allocated power supply scheduled time adjustment process is, for example, a process of attempting to allocate the power supply scheduled time of the processing target cooler 1 by exchanging or moving the already allocated power supply scheduled time. FIG. 13 is a time chart illustrating an example of adjustment processing of the allocated power supply scheduled time.

  As an example of the adjustment process, FIG. 13 shows a state in which the scheduled power supply time of the first unit already assigned to the power supply facility 2_1 is moved to the power supply facility 2_3. However, as shown in FIG. 13, even if the scheduled power feeding time of Unit 1 assigned to the power feeding facility 2_1 is moved to the power feeding facility 2_3, the idle time of the power feeding facility 2_1 is 4 hours, so the power feeding of the second unit The scheduled time cannot be assigned (corresponding to step S18: NO in FIG. 8). Therefore, the management device 3 makes a determination again for the power feeding facility 2_2 having the second shortest idle time (corresponding to step S19 in FIG. 8). When the management device 3 makes a determination again for the power supply facility 2_2 having the second shortest available time, the management device 3 restores the replacement or movement of the allocated power supply scheduled time performed in the adjustment process.

  FIG. 14 is a time chart illustrating a state in which it is determined whether or not the power supply scheduled time can be assigned to the power supply facility 2_2 with the second unit as a processing target. As shown in FIG. 14, the management device 3 compares the idle time (2 hours) of the power supply facility 2_2 with the second shortest idle time with the scheduled power supply time (5 hours + Ta) of Unit 2 (FIG. 8). It is determined that the scheduled power supply time of Unit 2 cannot be assigned to the power supply facility 2_2. Then, similarly to the above, the management device 3 performs an adjustment process for the allocated power supply scheduled time (corresponding to step S17 in FIG. 8).

  FIG. 15 is a time chart illustrating an example of adjustment processing of the allocated power supply scheduled time. As an example of the adjustment process, FIG. 15 shows a state in which the scheduled power supply time of the No. 4 machine already assigned to the power supply facility 2_2 is moved to the power supply facility 2_3. However, as shown in FIG. 15, even if the scheduled power feeding time of Unit 4 assigned to the power feeding facility 2_2 is moved to the power feeding facility 2_3, the idle time of the power feeding facility 2_2 is four hours, and therefore will be described later. The scheduled power supply time (5 hours + Ta) of Unit 2 including the power supply time cannot be assigned (corresponding to step S18 in FIG. 8: NO). Then, the management device 3 makes a determination again for the power supply facility 2_3 having the third shortest idle time (corresponding to step S19 in FIG. 8).

  FIG. 16 is a time chart illustrating a state in which it is determined whether or not it is possible to assign a scheduled power supply time to the power supply facility 2_3 with the second machine as a processing target. In FIG. 16, the management device 3 compares the free time (6 hours) of the power supply facility 2_3 with the third shortest free time with the time obtained by adding the additional power supply time to the scheduled power supply time (5 hours) of the second unit. (Corresponding to step S15 in FIG. 8).

  Here, the additional power supply time will be described. The additional power supply time is a time for performing additional power supply in consideration of the amount of cold energy consumed after the power supply scheduled time ends, in other words, after power supply is completed and before the power supply completion time. Therefore, the longer the time between the end time of the scheduled power supply time and the power supply completion time, the longer the additional power supply time must be.

  The additional power supply time may be calculated as follows, for example. The additional power supply time is the power supply time required to compensate for the amount of cold energy consumed between the end of the scheduled power supply time and the time when the power supply is completed, so the amount of cold energy consumed and the amount of consumed heat is compensated. Assuming that there is a proportional relationship between the power supply time and the power supply time, the time difference from the end of the scheduled power supply time to the power supply completion time is multiplied by a predetermined constant e.

  The value of the predetermined constant e may be derived empirically by, for example, experiments. In the following description, e = 0.5.

  Therefore, as shown in FIG. 16, when it is attempted to allocate the scheduled power supply time of Unit 2 with a required power supply time of 5 hours to the free time (6 hours) of the power supply facility 2_3, the additional power supply time is as described above. One hour, which is the time difference between 23:00 and 24:00, is multiplied by a predetermined constant e = 0.5 to obtain 0.5 hours.

  Here, the management device 3 is configured such that the idle time (6 hours) of the power supply facility 2_3 is obtained by adding the additional power supply time (0.5 hours) to the necessary power supply time (5 hours) of the second unit to be processed. 5 hours) (corresponding to step S15 in FIG. 8: YES). Thereby, as shown in FIG. 17, the management apparatus 3 assigns the scheduled power feeding time of Unit 2 to the power feeding facility 2_3 (corresponding to step S16 in FIG. 8). FIG. 17 is a time chart showing a state in which the scheduled power supply time of Unit 2 is allocated to the power supply facility 2_3.

  Next, since the management apparatus 3 has not finished allocation of the No. 3 machine with the second longest required power supply time in the second cold storage (step S20 in FIG. 8: NO), the management apparatus 3 is as described above with respect to the No. 3 machine. Repeat the assignment process. FIG. 18 is a time chart showing a state in which the scheduled power supply time of Unit 3 is assigned.

  In FIG. 18, the management device 3 compares the idle time (1 hour) of the power supply facility 2_1 with the shortest idle time with the scheduled power supply time (3 hours + Ta) of the No. 3 unit (corresponding to step S15 in FIG. 8). ), It is determined that the scheduled power supply time of Unit 2 cannot be allocated to the power supply facility 2_1. In this case, the management device 3 performs an adjustment process of the allocated scheduled power supply time (corresponding to step S17 in FIG. 8).

  As shown in FIG. 18, by moving the scheduled power supply time of Unit 4 assigned to the power supply facility 2_1 to the empty power supply facility 2_4, the idle time of the power supply facility 2_1 becomes 4 hours. When it is attempted to assign the scheduled power supply time of Unit 3 with a required power supply time of 3 hours to the power supply facility 2_1 with a free time of 4 hours, the additional power supply time is the time difference between 23:00 and 24:00 from the above. One hour is multiplied by a predetermined constant e = 0.5 to be 0.5 hour.

  In this case, the idle time of the power supply facility 2_1 is longer than the time required for adding the additional power supply time to the required power supply time of the fourth device, and therefore, as shown in FIG. Allocate the scheduled power supply time. And since all the 2nd cold storage allocation was completed (step S20 of FIG. 8: YES), the management apparatus 3 advances a process to step S6 of the flowchart shown in FIG.

  Note that what happens when the adjustment process in step S17 shown in FIG. 8 is not performed will be described with reference to an example of allocation of the scheduled power supply time of Unit 3 shown in FIG. FIG. 19 is a time chart showing an example of allocation of scheduled power feeding time for Unit 3 when adjustment processing for allocated scheduled power feeding time is not performed.

  In this case, since the vacant time of the power supply facilities 2_1, 2_2, 2_3 is shorter than the necessary power supply time (3 hours + Ta) of the third unit, the management device 3 allocates the scheduled power supply time of the third unit to the power supply facility 2_4. Will do. Here, the additional power feeding time is 2 hours by multiplying 4 hours, which is the time difference between 20:00 and 24:00, by a predetermined constant e = 0.5.

  Therefore, as shown in FIG. 19, when the adjustment process is not performed, the total free time of all the power supply facilities 2 is 6.5 hours. On the other hand, as shown in FIG. 18, when adjustment processing is performed, the total free time of all the power supply facilities 2 is 8 hours. This difference occurs because the additional power supply time can be shortened when the power supply scheduled time is assigned as close to the power supply completion time as possible.

  From the above, as can be understood by comparing FIG. 18 and FIG. 19 with the optimization process of the scheduled power supply time allocation shown in FIG. 8, it is possible to reduce the time during which the plurality of power supply facilities 2 operate simultaneously. Become.

  Returning to the description of FIG. 3, the management device 3 determines in step S <b> 6 whether or not the processing for all of the coolers 1 belonging to the group to be processed has been completed. When it determines with complete | finishing (step S6: YES), the management apparatus 3 advances a process to step S7. On the other hand, when it determines with not having complete | finished (step S6: NO), the management apparatus 3 repeats step S5 until the optimization process is completed with respect to all the cool storage boxes 1. FIG.

  Then, in step S7, the management device 3 determines whether or not processing has been completed for all groups. When it determines with complete | finishing (step S7: YES), the management apparatus 3 complete | finishes the electric power feeding scheduled time allocation process shown in FIG. On the other hand, when it determines with not complete | finishing (step S7: NO), the management apparatus 3 makes the next group a process target, and returns to step S2.

<Action and effect>
As described above, in the management device 3 according to the embodiment of the present disclosure, the cool box 1 existing in the management base is classified into “Category 1” in which the required cool time and the maximum cool time are the same. Multiple power supplies when categorized as a cold storage (first cold storage) and a cold storage (second cold storage) classified as “Category 2” whose maximum cold time is longer than the required cold time Among the facilities, the power supply scheduled time of the first cold storage unit is kept cool for any of the power supply facilities whose idle time, which is the time zone in which the scheduled power supply time can be allocated, is longer than the required power supply time of the first cold storage unit. The power supply is assigned between the time when the power supply completion time, which is the time at which the power supply of the warehouse is to be completed, goes back by the necessary power supply time of the first cold storage, and the power supply completion time.

  In addition, the management device 3 according to the embodiment of the present disclosure sets the power supply scheduled time of the second cooler after the idle time is longer than the necessary power supply time after all the power supply scheduled times of the first cooler have been allocated. Assign to any of the facilities from a time close to the current time.

  And the management apparatus 3 which concerns on embodiment of this indication allocates additional power supply time immediately after completion | finish time of power supply scheduled time based on the time difference to power supply completion time after completion | finish of power supply scheduled time of a 2nd cool box. .

  With such a configuration, since the required cold insulation time and the maximum cold insulation time are the same, the power supply scheduled time of the first cold storage where the amount of cold storage is consumed by the completion of power supply after the pre-cooling by power supply is completed is the power supply Assigned to be as close as possible to the completion time. In a distribution system that uses a cold storage, it is necessary to keep the inside of the cold storage below the specified temperature for the required cool time set longer than the delivery time, but this configuration ensures the necessary cool time due to the consumption of cold storage. It is possible to prevent a situation where it cannot be performed.

  In addition, the power supply schedule time of the second cooler with the maximum cool time longer than the required cool time is added only for the additional power supply time considering the amount of cold storage consumed between the end of the power supply scheduled time and the power supply completion time. Power is supplied (pre-cooled). For this reason, it is possible to avoid a situation in which the amount of cold storage is consumed by the time when the power supply is completed after the pre-cooling by the power supply is completed, and the necessary cool keeping time cannot be secured.

  Furthermore, the management device 3 according to the embodiment of the present disclosure assigns the scheduled power supply time of the cool box 1 from the power supply facility 2 having the shortest idle time. Thereby, it becomes possible to reduce the time during which the plurality of power supply facilities 2 operate simultaneously.

  While various embodiments have been described with reference to the drawings, the present disclosure is not limited to such examples. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the scope of the disclosure. Understood. Moreover, each component in the said embodiment may be arbitrarily combined in the range which does not deviate from the meaning of an indication.

  The present disclosure is useful for a management device of a cold storage management system that can suitably perform power supply scheduled times for a plurality of cold storages.

DESCRIPTION OF SYMBOLS 100 Cold storage management system 1 Cold storage 2, 2_1, 2_2, 2_3, 2_4 Power supply equipment 3 Management apparatus 31 Acquisition part 32 Memory 33 Control part 34 Cooling apparatus 35 Cold storage body temperature sensor 36 Display part

Claims (6)

A management device that pre-allocates a scheduled power supply time, which is a time during which power supply for pre-cooling of at least one cold storage is performed, to any of a plurality of power supply facilities,
When the necessary cool keeping time required to keep the inside of the cool box at a predetermined temperature or less is determined in advance for each cool box, the cool box is kept below the predetermined temperature by the necessary cool time. Information related to the required power supply time, which is the power supply time for performing precooling necessary to maintain, and the maximum cold storage time, which is the time during which the inside of the cold storage can be kept below the predetermined temperature when precooling is performed to the maximum An acquisition unit for acquiring information;
When the cold storage is classified into a first cold storage in which the required cold storage time and the maximum cold storage time are the same, and a second cold storage in which the maximum cold storage time is longer than the required cold storage time, Among the power supply facilities, for any one of the power supply facilities, the power supply planned time of the first cold storage is longer than the required power supply time of the first cold storage. A controller that allocates between the power supply completion time, which is the time at which the power supply of the cold storage is to be completed, and the power supply completion time, and a time that is traced back by the necessary power supply time of the first cold storage,
A management device. The control unit, after all the allocation of the power supply scheduled time of the first cold storage is completed, the second cold storage for any of the power supply facilities whose idle time is longer than the required power supply time of the second cold storage. Allocate the power supply scheduled time of the warehouse from the time close to the current time,
The management apparatus according to claim 1. The control unit assigns an additional power supply time immediately after the end time of the scheduled power supply time based on the time difference until the power supply completion time after the scheduled power supply time of the second cooler.
The management device according to claim 2. The control unit assigns the scheduled power supply time of the cold storage that has not been assigned to the power supply facility having the shortest free time among the power supply facilities having a free time longer than the required power supply time of the cold storage,
The management apparatus as described in any one of Claim 1 to 3. The control unit performs the allocation of the power supply scheduled time of the cold storage that is not assigned in order from the cold storage in which the required power supply time is long,
The management apparatus as described in any one of Claim 1 to 4. A power supply allocation method for pre-allocating a power supply scheduled time, which is a time when power supply for pre-cooling of at least one cold storage is performed, to any of a plurality of power supply facilities,
When the necessary cool keeping time required to keep the inside of the cool box at a predetermined temperature or less is determined in advance for each cool box, the cool box is kept below the predetermined temperature by the necessary cool time. Information related to the required power supply time, which is the power supply time for pre-cooling necessary to maintain, and the maximum cool time, which is the time during which the inside of the cold storage can be kept below the predetermined temperature when pre-cooling is performed to the maximum Get information, and
When the cold storage is classified into a first cold storage in which the required cold storage time and the maximum cold storage time are the same, and a second cold storage in which the maximum cold storage time is longer than the required cold storage time, Among the power supply facilities, for any one of the power supply facilities, the power supply planned time of the first cold storage is longer than the required power supply time of the first cold storage. Is assigned between the power supply completion time, which is the time at which the power supply of the cold storage is to be completed, and the power supply completion time, and a time that is back by the necessary power supply time of the first cold storage.
Power supply allocation method.

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