JP7637757B2 - Logistics management device, logistics management method, and logistics management program - Google Patents

Description

The present invention relates to a logistics management device, a logistics management method, and a logistics management program.

A logistics center exists as one of the infrastructure facilities for the prompt delivery of ordered goods. In a logistics center, goods received from manufacturers and other parties are temporarily stored. When an order is subsequently placed, the ordered goods are taken out of the logistics center, packaged, and shipped to the customer.

A logistics center is equipped with many types of logistics equipment to carry out each of the series of processes mentioned above (receiving, storing, removing, packing, and shipping). Therefore, accurately understanding and improving the work efficiency of logistics equipment is an important management strategy for companies that operate logistics centers.

The logistics equipment display system in Patent Document 1 displays a layout diagram of equipment such as racks, stacker cranes, and loading/unloading stations in a warehouse. The figures showing each piece of equipment are color-coded according to the equipment's status information (either normal, abnormal, broken, or stopped).

JP 2013-95529 A

The logistics facility display system of Patent Document 1 is effective for viewing whether each facility in a warehouse is operating normally at a certain point in time. However, this logistics facility display system does not have the viewpoint of recognizing the status information of each facility in chronological order. Therefore, a separate measure is required to recognize the work efficiency of each facility in terms of time ratio.
Therefore, an object of the present invention is to display the working efficiency of a device or the like in a desired time period as a time ratio.

The logistics management device of the present invention comprises a log collection unit that acquires, based on log information of a plurality of transport vehicles transporting goods, information on the time the transport vehicles were performing work aimed at transporting goods and information on the time the transport vehicles were performing specified work other than the work aimed at transporting goods, and a display processing unit that outputs, based on the information acquired by the log collection unit, a transport vehicle work rate, which is an index of the time the plurality of transport vehicles performed work aimed at transporting goods within a specified period, and a transport vehicle utilization rate, which is an index of the time the plurality of transport vehicles performed work aimed at transporting goods and the specified work within the specified period, wherein the specified work includes charging the transport vehicles .
Other means will be described in the description of the embodiment of the invention.

According to the present invention, the operating efficiency of equipment, etc. during a desired time period can be displayed as a time ratio.

FIG. 1 is a perspective view of a layout of a logistics center. FIG. FIG. The configuration of the logistics management device will now be described. 13 is an example of transportation vehicle information. 11 is an example of charger information. 11 is an example of worker information. 11 is an example of station information. 13 is an example of order information. 13 is a flowchart of a processing procedure. 1 is an example of a dashboard screen. 13 is an example of a station efficiency screen. 13 is an example of a vehicle efficiency screen. 13 is an example of a charging efficiency screen. 13 is an example of a worker screen. 13 is an example of a transportation vehicle maintenance screen.

The following describes in detail an embodiment of the present invention (referred to as the "present embodiment") with reference to the drawings. The present embodiment is an example in which a logistics center that receives goods from a manufacturer or the like ships the goods in response to an order. However, the present invention is also applicable to cases in which a manufacturer or the like stores and manages parts in-house, for example.

(Logistics center layout)
FIG. 1 is a perspective view of the layout of a logistics center. The logistics center has a storage space 2. In the storage space 2, a plurality of shelves 3 are arranged in an orderly grid pattern in the vertical and horizontal directions. The shelves 3 form an "island" consisting of 2 x 6 or 1 x 6 shelves 3. In the storage space 2, a plurality of transport vehicles 4 are present. The transport vehicles 4 enter the lower parts of the shelves 3 to transport the shelves 3. At any locations around the storage space 2, a plurality of chargers 5 for supplying power to the transport vehicles 4 are present. A plurality of stations 6 are present adjacent to the outer edge of the storage space 2. At the stations 6, workers 7 or work robots 8 perform the work of storing and retrieving items. In addition to shelves, pallets, tanks, baskets, storage units, etc. may also be used.

Figure 2 is a perspective view of shelf 3. Shelf 3 has a square plane and four legs, one of which is hidden in Figure 2. Shelf 3 has an upper, middle and lower tier. Each tier has a left, center and right storage box. In total, shelf 3 has nine storage boxes. The upper, middle and lower tiers are assigned the symbols U, M and L, respectively, and the left, center and right are assigned the symbols L, C and R, respectively. Then, for example, the storage box on the top left tier is written as "UL".

Figure 3 is a front view of shelf 3. Shelf 3 has a space below the lower level. Transport vehicle 4 can enter this space. Furthermore, transport vehicle 4 can transport shelf 3 in a lifted state.

(Logistics management device)
4 is a diagram illustrating the configuration of the logistics management device 1. The logistics management device 1 is a general computer, and includes a central control device 11, an input device 12 such as a keyboard, an output device 13 such as a display, a main memory device 14, an auxiliary memory device 15, and a communication device 16. These devices are connected to each other via a bus. The auxiliary memory device 15 stores vehicle information 31, charger information 32, worker information 33, station information 34, and order information 35 (described in detail later).

The log collection unit 21 and display processing unit 22 in the main memory device 14 are programs. Hereinafter, when the subject of an operation is described as "XX unit," it means that the central control device 11 reads each program from the auxiliary memory device 15, loads it into the main memory device 14, and then realizes the function of each program (described in detail below). The auxiliary memory device 15 of the logistics management device 1 may be configured independently of the logistics management device 1.

The logistics management device 1 is communicatively connected to one or more transport vehicles 4, one or more chargers 5, one or more station equipment 41, and a transport vehicle/charger control device 42 via a wired or wireless network 9 (including an in-house dedicated line).

The transport vehicle 4 has an electric motor that rotates the drive wheels, an electric motor that adjusts the height of the loading platform that lifts the shelf 3, a storage battery that supplies power to these electric motors, a sensor, and an on-board computer (not shown). The sensor obtains its own current position by reading floor markers placed on the floor. The floor markers store two-dimensional coordinate values of vertical and horizontal squares that divide the floor into a grid. The transport vehicle 4 may operate based on map information based on surrounding environmental information, etc., without using floor markers. The sensor can also read a shelf ID (described in detail below) written at any point on the shelf 3. The sensor can also detect obstacles around the transport vehicle.

The on-board computer transmits various data, including its own status (described in detail below), to the vehicle/charger control device 42 in real time or on request, and receives transport instructions from the vehicle/charger control device 42. The on-board computer adjusts the rotation direction and speed of the drive wheels and adjusts the height of the loading platform by operating the electric motor based on the transport instructions received.

The charger 5 has a power supply plug that electrically connects to the transport vehicle 4, a sensor, and a microcomputer (not shown). The power supply plug supplies power to the storage battery of the transport vehicle 4. The sensor reads the transport vehicle ID attached to the transport vehicle 4 and detects abnormalities such as poor contact of the power supply plug. The microcomputer transmits various data including its own status to the transport vehicle/charger control device 42 in real time or upon request, and receives charging instructions from the transport vehicle/charger control device 42. Based on the received charging instructions, the microcomputer supplies power to the transport vehicle 4 by operating the power supply plug.

The station equipment 41 is any equipment for station control that is arranged in each station 6 (FIG. 1). For example, if a work robot 8 is arranged in the station 6, the station equipment 41 is the work robot 8 itself. If a worker 7 is arranged in the station 6, the station equipment 41 is any device (such as a display, a guide frame on the shelf frontage, or a terminal device carried by the worker) that gives specific work instructions to the worker. In any case, the station equipment 41 transmits various data, including its own or the worker's status, to the logistics management device 1 in real time or upon request, and receives work instructions from the logistics management device 1. The station equipment 41 or the worker 7 performs work such as entering or leaving the warehouse based on the received work instructions.

The transport instructions, charging instructions, and work instructions described above are generated by the logistics management device 1. The transport vehicle/charger control device 42 may be configured as an integrated part of the logistics management device 1. For the sake of simplicity, hereafter, the logistics management device 1 is assumed to also have the functions of the transport vehicle/charger control device 42. Note that the "multiple devices constituting the logistics center" include the transport vehicles 4, chargers 5, and station equipment 41.

(Transport vehicle information)
5 is an example of the transportation vehicle information 31. In the transportation vehicle information 31, in association with the transportation vehicle ID stored in the transportation vehicle ID column 101, a state is stored in the status column 102, a flag is stored in the start/end column 103, a time is stored in the time column 104, a position is stored in the position column 105, a corner position is stored in the corner position column 106, and acquired data is stored in the acquired data column 107.

The vehicle ID in the vehicle ID column 101 is an identifier that uniquely identifies the vehicle.
The status in the status column 102 is a specific task or operation instructed to the transport vehicle by the logistics management device 1 during the transport instruction, or the content of an event detected spontaneously by the transport vehicle. Such a status is sometimes called an "event" in this field.

The flag in the start/end column 103 is either "start", which indicates that the state has started, or "end", which means that the state has ended.
The time in the time column 104 indicates the year, month, day, hour, minute, and second at which the state started or ended.
The position in the position column 105 is the two-dimensional coordinate value of the square in which the transport vehicle is located at that time. # indicates the same or a different value in an abbreviated manner.

The corner position in the corner position column 106 is a two-dimensional coordinate value of a position where the transport vehicle changes its moving direction. The corner position is stored only in the "end" record of a state involving movement. A single record may store multiple corner positions. The logistics management device 1 calculates the travel distance of the transport vehicle by tracing the position (column 105) and the corner position (column 106).
The acquired data in the acquired data column 107 is any data acquired by the transportation vehicle during the state. In most cases, the acquired data is measurement information other than the start and end times of the state.

Looking at FIG. 5, for example, the following can be seen.
From 10:00:00 to 10:11:00 on November 1, 2018, the transport vehicle A001 performed "non-allocated work.""Allocated" means "intended to transport a shelf." Therefore, "non-allocated" means "not intended to transport a shelf." Here, "non-allocated work" means "going to a charging position."
From 10:11:00 to 10:21:00, transport vehicle A001 was “charged.”

From 10:21:00 to 10:22:00, the transport vehicle A001 performed "non-allocated work." Here, "non-allocated work" means "going to a standby position."
During this period, from 10:21:20 to 10:21:25, the transport vehicle A001 detected a "barcode skip." The barcode in this case was a floor marker barcode. At this time, the transport vehicle A001 issued an alarm.
At the same time that it detects "skipped barcode reading", the transport vehicle A001 detects an abnormality. At this time, the transport vehicle A001 issues the message "obstacle detected". For example, liquid spilled on the floor may be hiding the floor marker.
From 10:22:00 to 10:30:00, transport vehicle A001 "waited" at the designated waiting position.

From 10:30:00 to 10:32:00, transport vehicle A001 performed "allocation work."
During this period, from 10:30:00 to 10:31:00, the transport vehicle A001 performed a "pick-up.""Pick-up" has the meaning of "traveling to the position of the shelf where the target article is stored without lifting the shelf."
From 10:31:00 to 10:31:05, the transport vehicle A001 performed "raising the loading platform.""Raising the loading platform" means "lifting the shelf with the loading platform." At this time, the transport vehicle A001 measures the weight of the shelf.
From 10:31:05 to 10:31:10, the transport vehicle A001 detects that the "deviation" is equal to or greater than a predetermined threshold. The "deviation" here is the distance between the instructed travel line and the actual travel line. At this time, the transport vehicle A001 measures the distance.

From 10:31:20 to 10:31:25, the transport vehicle A001 performed a "platform rotation." The "platform rotation" means "rotating the platform that holds up the shelf." At this time, the transport vehicle A001 measures the rotation angle.
From 10:31:35 to 10:31:40, the transport vehicle A001 performed "loading platform lowering.""Loading platform lowering" has the meaning of "lowering the shelf."
From 10:31:40 to 10:32:00, the transport vehicle A001 made a "return.""Return" has the meaning of "returning to the standby position."

From 10:32:00 to 11:00:00, transport vehicle A001 "waited" at a predetermined waiting position.
During this period from 10:40:00 to 10:41:00, the transport vehicle A001 detected a "communication interruption." A "communication interruption" means that the transport vehicle cannot receive communication from the logistics management device.
From 11:00:00 to 11:30:00, the transport vehicle A001 was in the "offline" state. "Offline" means that the logistics management device cannot transmit communication to the transport vehicle.

(Charger information)
6 is an example of the charger information 32. In the charger information 32, in association with a charger ID stored in a charger ID column 111, a state is stored in a state column 112, a flag is stored in a start/end column 113, a time is stored in a time column 114, a vehicle ID is stored in a vehicle ID column 115, and acquired data is stored in an acquired data column 116.

The charger ID in the charger ID column 111 is an identifier that uniquely identifies the charger.
The status in the status column 112 is a specific task or operation that the logistics management device 1 instructs the charger to perform during charging instruction, or the contents of an event that the charger detects spontaneously.
The flags in the start/end column 113 are the same as those in FIG.
The times in the time column 114 are the same as those in FIG.
The vehicle ID in the vehicle ID column 115 is the same as the vehicle ID in FIG. 5, but in this case, it is particularly the vehicle ID of the vehicle being charged.
The acquired data in the acquired data column 116 is any data that the charger acquired during that state.

Looking at FIG. 6, for example, the following can be seen.
From 10:00:00 to 10:30:00 on November 1, 2018, charger B001 waited without charging any of the transport vehicles.
Between 10:30:00 and 10:40:00, the charger B001 charged the transportation vehicle A011.
Charger B001 was on standby from 10:40:00 to 11:00:00.

Between 11:00:00 and 11:10:00, the charger B001 charged the transportation vehicle A012.
During this period, the charger B001 detected an abnormality between 11:05:00 and 11:05:05. At this time, the charger B001 acquired a "poor contact of the power supply plug."
From 11:10:00 to 12:00:00, the charger B001 was in the "offline" state. "Offline" means that the logistics management device cannot transmit communication to the charger.

(Worker information)
7 is an example of the worker information 33. In the worker information 33, in association with the worker ID stored in the worker ID column 121, a status is stored in the status column 122, a flag is stored in the start/end column 123, a time is stored in the time column 124, the number of processed lines is stored in the processed line count column 125, and an item ID and quantity is stored in the item ID×quantity column 126.

The worker ID in the worker ID column 121 is an identifier that uniquely identifies a worker.
The status in the status column 122 indicates the specific work content that the logistics management device 1 instructs the worker to perform in the work instruction.
The flags in the start/end column 123 are the same as those in FIG.
The times in the time column 124 are the same as those in FIG.

The number of processed lines in the number of processed lines column 125 is the number of processed lines of work instructions (the amount of data in the instruction content). The larger the number of processed lines, the more complex the work that the worker must perform is qualitatively and/or quantitatively (described in detail below). # indicates different values as an abbreviation.
The item ID in the item ID x quantity field 126 is an identifier for identifying the type of item to be worked on, and the quantity is the quantity of that item. In this embodiment, the worker enters (stores in the shelf) or removes (takes out from the shelf) items at station 6. Different types of items are stored in each storage box on the shelf.

Looking at FIG. 7, for example, the following can be seen.
From 10:00:00 to 10:01:00 on November 1, 2018, worker C001 waited at a certain station (waited for work instructions).
From 10:01:00 to 10:01:20, worker C001 performed the "shipping out" task. The number of processing lines for the work instruction related to this task was "#". Based on the work instruction, worker C001 performed the task of shipping out at least 10 items D001.

From 10:01:20 to 10:01:45, worker C001 waited at the station.
From 10:01:45 to 10:03:30, worker C001 performed the "shipping out" task. The number of processing lines for the work instruction related to this task was "#". Based on the work instruction, worker C001 performed the task of shipping out at least 15 items D003.

From 10:03:30 to 10:05:20, worker C001 waited at the station.
From 10:05:20 to 10:06:50, worker C001 performed the "shipping out" task. The number of work instructions processed for this task was "#". Based on the work instructions, worker C001 performed the task of shipping out at least eight items D003.

From 10:06:50 to 10:30:00, worker C001 waited at the station.
From 10:30:00 to 11:10:00, worker C001 performed "warehousing work." The number of work instructions processed for this work was "#." Based on the work instructions, worker C001 performed the work of storing at least 300 items D012 in the warehouse.

(Station information)
8 is an example of the station information 34. In the station information 34, in association with the station ID stored in the station ID column 131, a status is stored in the status column 132, a flag is stored in the start/end column 133, a time is stored in the time column 134, the number of processed lines is stored in the processed line count column 135, a shelf ID is stored in the shelf ID column 136, and an item ID and quantity is stored in the item ID×quantity column 137.

The station ID in the station ID column 131 is an identifier that uniquely identifies a station facility 41 (for example, a work robot 8).
The status in the status column 132 indicates the specific content of the work that the logistics management device 1 instructs the station equipment to perform in the work instruction.
The flags in the start/end column 133 are the same as those in FIG.
The times in the time column 134 are the same as those in FIG.
The number of processed lines in the processed line number column 135 is the same as the number of processed lines in Fig. 7. # indicates a different value for shorthand purposes.

The shelf ID in the shelf ID column 136 is an identifier that uniquely identifies the shelf 3. When the logistics management device 1 calculates a hit rate (described in detail later), it uses the shelf ID here.
The item ID and quantity in the item ID x quantity column 137 are the same as the item ID and quantity in FIG.

Looking at FIG. 8, for example, the following can be seen.
From 10:00:00 to 10:10:00 on November 1, 2018, the station equipment E001 was on "standby (waiting for allocation)." Here, "waiting for allocation" means "waiting to be designated as a station to perform a specific task."
From 10:10:00 to 10:12:00, the station equipment E001 performed "waiting (pick-up or shelf transport)". Here, "pick-up" means that "while the station equipment E001 is waiting, a designated transport vehicle travels to the position of the shelf where the target item is stored without lifting the shelf". "Shelf transport" means that "while the station equipment E001 is waiting, the transport vehicle transports the target item with the shelf where the target item is stored kept lifted".

From 10:12:00 to 10:32:00, the station equipment E001 performed a "warehousing operation." The number of processing lines of the work instruction related to this operation was "#." Based on the work instruction, the station equipment E001 performed the operation of storing at least 200 items D021 on at least shelf F001.
From 10:32:00 to 10:35:00, the station equipment E001 was on "standby (waiting for allocation)".
From 10:35:00 to 10:36:00, the station equipment E001 performed "waiting (pick-up or shelf transport)".

From 10:36:00 to 11:10:00, the station equipment E001 performed a "removal operation." The number of processing lines for the work instruction related to this operation was "#." Based on the work instruction, the station equipment E001 performed the operation of removing at least two items D031 from at least shelf F002.
During this period, from 10:40:00 to 10:41:00, the station equipment E001 performed "standby (safety sensor detection).""Safety sensor detection" means, for example, that "the station's light curtain was blocked by something." In other words, during this period, the station equipment E001 suspended the retrieval operation.
From 11:10:00 to 11:15:00, the station equipment E001 was on "standby (waiting for allocation)".

(Relationship between worker information and station information)
Both the worker information 33 (FIG. 7) and the station information 34 (FIG. 8) store the work flow at a station. The only difference between them is that in the former case, a worker 7 is present at the station, while in the latter case, a work robot 8 is present at the station. The worker information 33 (FIG. 7) may have a shelf ID column, and the waiting status in the status column 122 of the worker information 33 may be subdivided into "waiting for allocation" and "pick-up or shelf transport" as in the station information 34 (FIG. 8).

(Ordering Information)
9 is an example of the order information 35. In the order information 35, in association with an order ID stored in an order ID field 141, an order destination name is stored in an order destination name field 142, an item ID is stored in an item ID field 143, an amount is stored in a quantity field 144, a time is stored in a time field 145, and the number of processed lines is stored in a processed line count field 146.
The order ID in the order ID column 141 is an identifier that uniquely identifies an order from a supplier. An order is a request to purchase an item.

The orderer name in the orderer name field 142 is the name of the orderer.
The item ID in the item ID column 143 is the same as the item ID in FIG. 7, but here it specifically identifies the item related to the order.
The quantity in the quantity column 144 is the quantity of the item related to the order.
The time in the time column 145 indicates the year, month, day, hour, minute, and second when the logistics management device 1 accepted the order.
The number of processed lines in the processed line number column 146 is the same as the number of processed lines in Fig. 7. # indicates a different value for shorthand purposes.

As is clear from FIG. 9, one order is for one or more types of goods in one or more quantities. Then, the station equipment 8 or the worker 7 takes out (ships) the ordered goods from one or more shelves. The logistics management device 1 stores data received from, for example, a server of an operator of a goods sales site in the auxiliary storage device 15 as order information 35.

(Relationship between order information and number of processed rows)
The number of processed lines is, for example, the amount of data constituting one order. As a simple example, the number of processed lines may be the number of records constituting one order. In this example, the number of processed lines for order G001 is "2", the number of processed lines for order G002 is "3", and the number of processed lines for order G003 is "1". The more types of items related to an order, the more the number of processed lines. This means that the workload at the time of shipping becomes greater. The logistics management device 1 may multiply the number of processed lines "1" corresponding to one type of item by a weight based on the quantity of the item, or may multiply it by a weight based on the weight of the item. Such a number of processed lines is an index indicating the amount of work that has progressed. Here, an example of the number of processed lines for shipping due to an order has been described. The number of processed lines is also defined for other work such as warehousing (not shown).

(Processing Procedure)
Fig. 10 is a flowchart of the processing procedure. In the following explanation of the flowchart, various pieces of information (Figs. 5 to 9 and various display screens (Figs. 11 to 16) will be referred to as appropriate.
In step S201, the log collection unit 21 of the logistics management device 1 acquires device logs. Specifically, the log collection unit 21 acquires all logs stored in the auxiliary storage device 15 and each device.

The "devices" here include the transport vehicles 4, the chargers 5, and the station equipment 41. The station equipment 41 includes the work robots 8 and any devices that give specific work instructions to the workers 7 (such as terminal devices carried by the workers, displays, and guide frames on the shelf frontages). Note that the logs are the operation history of each device, and are data showing the state of the device, with the start and end times of that state added. The logs are stored in the instructions sent by the logistics management device 1 to each device, or in the data sent voluntarily by each piece of equipment to the logistics management device 1.

In step S202, the log recorder 21 arranges the logs of the devices in chronological order. Specifically, the log recorder 21 arranges the logs acquired in step S201 in chronological order for each device.
In step S203, the log collection unit 21 creates the transportation vehicle information 31, etc. Specifically, the log collection unit 21 creates the transportation vehicle information 31 ( FIG. 5 ), charger information 32 ( FIG. 6 ), worker information 33 ( FIG. 7 ), and station information 34 ( FIG. 8 ) based on the logs arranged in chronological order for each device in step S202, and stores these in the auxiliary storage device 15. The log collection unit 21 can obtain the duration of a certain state by subtracting the start time from the end time of the state.

In step S204, the log recorder 21 accepts the order information 35 ( FIG. 9 ). Specifically, the log recorder 21 stores data received from, for example, a server of an operator of a product sales site in the auxiliary storage device 15 as the order information 35.
At this stage, based on the various information created in step S203 and the order information 35 accepted in step S204, the log collection unit 21 acquires the status and duration of each of the devices that make up the logistics center.

In step S205, the display processing unit 22 of the logistics management device 1 displays the screen selection tag group 51 (Figure 11). Specifically, the display processing unit 22 displays the screen selection tag group 51 having six tags on the output device 13. The six tags are "dashboard", "station efficiency", "vehicle efficiency", "charging efficiency", "worker", and "vehicle maintenance". The display processing unit 22 then accepts the user's selection of one of these tags. For the sake of explanation, it is assumed that the user selects the tags one by one in this order.

In step S206, the display processing unit 22 displays the dashboard screen 52 (FIG. 11). Specifically, the display processing unit 22 displays the dashboard screen 52 on the output device 13. The display processing unit 22 displays the following numerical values, etc. on the dashboard screen 52 based on the various pieces of information created in step S203 and the order information 35 accepted in step S204.

Column 52a displays the start time and end time of work for the current day, as well as the progress rate and estimated end time at the current time. The start time and end time of work are data set in advance by the user. The progress rate is the ratio of the number of processing lines for shipping that are to be performed on the current day that have been generated up to the current time that have actually been executed. The estimated end time is the time when all shipping work is expected to be completed at the current time.

Column 52b displays the following values:
Progress rate: The same value as the progress rate in column 52a. Number of lines: The ratio of the number of lines that have actually been executed to the number of processed lines for all work that has been generated up to the current time and is to be executed on the current day. Number of lines/station: The ratio of the number of lines that have actually been executed to the number of processed lines for warehousing and shipping work that has been generated up to the current time and is to be executed on the current day (this may be the value for a specific station or the value for the entire station).

・Operating stations: The ratio of the number of stations that have operated at least once between the work start time and the current time out of the total number of stations. ・Station operation rate: The ratio of the time during which the shipping operation was performed at the station out of the time elapsed between the work start time and the current time (this may be the value for a specific station or the value for all stations).
Vehicle operation rate: The ratio of the total time during which the vehicle performed "allocated work", "non-allocated work", or "charging" to the time elapsed from the work start time to the current time (this may be the value for a specific vehicle or the value for all vehicles).
Vehicle work rate: The ratio of the total time that the vehicle performed "allocation work" to the elapsed time from the work start time to the current time (this may be a value for a specific vehicle or a value for all vehicles).

Column 52c graphically displays the following values:
Overall: The same value as the progress rate in column 52a Batch 2: The progress rate at a point in time that is a predetermined time (e.g., 60 minutes) prior to the current time Batch 3: The progress rate at a point in time that is a predetermined time (e.g., 120 minutes) prior to the current time

Column 52d displays the following values in a graph: The horizontal axis of the graph represents time, and the vertical axis represents the quantity of items.
・Incoming forecast: Line segment connecting the origin and "[Forecasted end time of incoming, Forecasted quantity of incoming]" ・Outgoing forecast: Line segment connecting the origin and "[Forecasted end time of outgoing, Forecasted quantity of outgoing]" ・Incoming: Cumulative quantity of goods actually received in time series ・Outgoing: Cumulative quantity of goods actually sent out in time series

Column 52e graphically displays the following values: The horizontal axis of the graph is time, and the vertical axis is the number of rows (left scale), the number of times, and the number of stations (right scale).
Number of lines/h: The cumulative time series value of the number of processing lines that indicate the work performed in one hour. Number of picks/h: The cumulative time series value of the number of out-of-stock work performed in one hour. Number of operating stations: The cumulative time series value of the number of stations that performed work at least once in one hour.

Column 52f displays the following values in a graph: The horizontal axis of the graph represents time, and the vertical axis represents the work rate or utilization rate.
Station work rate: Time series change of station work rate in column 52b. Transport vehicle operation rate: Time series change of transport vehicle operation rate in column 52b. Transport vehicle work rate: Time series change of transport vehicle work rate in column 52b.

In step S207, the display processing unit 22 displays the station efficiency screen 53 (FIG. 12). Specifically, first, the display processing unit 22 displays the station efficiency screen 53 on the output device 13, and accepts input of an arbitrary designated time period in the field 53a by the user. In the example of FIG. 12, the length of the designated time period is "1 hour = 60 minutes".
Secondly, the display processing unit 22 displays the following numerical values for each station ID on the station efficiency screen 53 based on the station information 34 created in step S203.

・Station utilization rate: The ratio of working time and waiting time to the total time spent in the specified time slot. ・Hit rate: The ratio of the total number of types of items in the retrieval work in the specified time slot divided by the total number of shelves. ・Average pick time: The average time from the start time to the end time of the retrieval work in the specified time slot.

Total number of processed lines: The total number of processed lines in the specified time period. Working time: The cumulative value of the time from the start time to the end time of "warehousing entry work" and "warehousing removal work" in the specified time period. Waiting time for work: The cumulative value of the time from the start time to the end time of "waiting (waiting for allocation)" and "waiting (pick-up or shelf transport)" in the specified time period. Number of shelf transports: The total number of shelf IDs in the specified time period.

Thirdly, the display processing unit 22 totals the times during the specified time period that correspond to "warehousing entry work", "warehousing removal work", "waiting (safety sensor detection)", "waiting (pick-up or shelf transport)", and "waiting (waiting for allocation)".The display processing unit 22 then displays the ratio of each total time to the length of the specified time period as a "station operation distribution" in a pie chart, bar graph, or the like.

In step S208, the display processing unit 22 displays the vehicle efficiency screen 54 (FIG. 13). Specifically, first, the display processing unit 22 displays the vehicle efficiency screen 54 on the output device 13, and accepts input of an arbitrary designated time period by the user in a field 54a. In the example of FIG. 13, the length of the designated time period is "1 hour = 60 minutes".
Secondly, the display processing unit 22 displays the following numerical values for each transport vehicle ID on the transport vehicle efficiency screen 54 based on the transport vehicle information 31 created in step S203.

・Utilization rate: The ratio of the total allocated work time and non-allocated work time to the length of the specified time slot. ・Working time: The total of allocated work time and non-allocated work time in the specified time slot. ・Pick-up time: The cumulative value of the time from the start time to the end time of "pick-up" in the specified time slot (Pick-up time is included in the allocated work time).
· Allocated work time: The cumulative value of the time from the start time to the end time of "allocated work" during the specified time period · Non-allocated work time: The cumulative value of the time from the start time to the end time of "non-allocated work" during the specified time period

・Waiting time: cumulative value of time from start time to end time of "waiting" during a specified time period ・Charging time: cumulative value of time from start time to end time of "charging" during a specified time period Thirdly, the display processing unit 22 displays the ratio of "allocated work time", "non-allocated work time", "waiting time", "offline time" and "charging time" to the length of a specified time period as a "vehicle operation distribution" in a pie chart, a bar chart, or the like. Note that "offline time" is not displayed as a numerical value in FIG. 13.

In step S209, the display processing unit 22 displays the charging efficiency screen 55 ( FIG. 14 ). Specifically, first, the display processing unit 22 displays the charging efficiency screen 55 on the output device 13, and accepts input of an arbitrary designated time period by the user in a field 55 a. In the example of FIG. 14 , the length of the designated time period is “1 hour=60 minutes”.
Secondly, the display processing unit 22 displays the following numerical values for each charger ID on the charging efficiency screen 55 based on the charger information 32 created in step S203.

Charging time: the cumulative value of the time from the start time to the end time of “charging” during the specified time period; Standby time: the cumulative value of the time from the start time to the end time of “standby” during the specified time period; Offline time: the cumulative value of the time from the start time to the end time of “offline” during the specified time period; Number of abnormalities: the number of times “abnormality detection” occurred during the specified time period. Thirdly, the display processing unit 22 displays the ratio of “charging time”, “standby time”, and “offline time” to the length of the specified time period as “charging efficiency” in the form of a pie chart, a bar chart, or the like.

In step S210, the display processing unit 22 displays the worker screen 56 ( FIG. 15 ). Specifically, first, the display processing unit 22 displays the worker screen 56 on the output device 13, and accepts input of an arbitrary designated time period by the user in a field 56 a. In the example of FIG. 15 , the length of the designated time period is “24 hours=1440 minutes”.
Secondly, the display processing unit 22 displays the following numerical values for each worker ID on the worker screen 56 based on the worker information 33 created in step S203.

・Work time: The cumulative time from the start to the end of "warehousing work" and "warehousing out" during the specified time period. ・Number of lines: The total number of lines processed during out-of-warehousing work during the specified time period. ・Number of pieces: The total number or types of items that were out of the warehouse during the specified time period. ・Productivity: The value obtained by dividing the number of lines processed by the work time during the specified time period.

In step S211, the display processing unit 22 displays the vehicle maintenance screen 57 (FIG. 16). Specifically, first, the display processing unit 22 displays the vehicle maintenance screen 57 on the output device 13.
Secondly, the display processing unit 22 displays the following evaluation values for each vehicle ID on the vehicle maintenance screen 57 based on the vehicle information 31 created in step S203. There are 10 types of evaluation values in total. These evaluation values are values for the period from a reference point (e.g., the time of the previous maintenance) to the current time.

Driving time: Total of allocated work time and non-allocated work time Travel distance: Distance obtained by tracing the position of the transport vehicle and the corner position Number of times the loading platform has rotated: Number of times the loading platform has rotated Number of times the loading platform has risen: Number of times the loading platform has risen Number of times the loading platform has fallen: Number of times the loading platform has been lowered Number of times charging: Number of times the charging has been performed Number of times the barcode has been skipped: Number of times the barcode has been skipped Amount of deviation: Total of data obtained in "deviation detection" (○ cm) Number of times communication has been interrupted: Number of times communication has been interrupted Number of times an abnormality has occurred: Number of times an abnormality has been detected

Thirdly, the display processing unit 22 applies a predetermined threshold value to the evaluation value of each transport vehicle, and among the evaluation values that are equal to or greater than the threshold value, highlights the evaluation value that is the furthest from the threshold value in a first manner, and highlights the others in a second manner. This process is repeated for each type of evaluation value. In FIG. 16, the first manner is double diagonal hatching, and the second manner is single diagonal hatching. In FIG. 16, for the sake of simplicity, it is assumed that there are two evaluation values that are equal to or greater than the threshold value for each type of evaluation value, except for driving time and number of charges.

Fourth, the display processing unit 22 displays "C", "B" or "A" in the overall judgment column according to the following rules.
<Rule 1> Display "C" for any vehicle that has at least one highlighted display of the first type.
<Rule 2> Display "B" for a vehicle that has no first mode highlighting and at least one second mode highlighting.
<Rule 3>"A" is displayed for a vehicle that has neither the first mode nor the second mode highlighted.

Looking at FIG. 16 as a whole, for example, the following can be seen.
The vehicles that need most urgent maintenance are A002, A008, A015, and A016.
For the transport vehicle A002, the evaluation values of "distance traveled,""number of platform rotations,""number of ascents," and "number of descents" are larger than those of the other transport vehicles. Therefore, the maintenance of the running system, such as the wheels, and the drive system of the platform should be prioritized.

The evaluation value of "number of communication interruptions" for the carrier A008 is larger than that for the other carriers. Therefore, the carrier A008 should focus on maintenance of the antenna, for example.
The evaluation value for the guided vehicle A015, "number of barcodes skipped," is larger than that for the other guided vehicles. Therefore, for example, maintenance of the optical system of the sensor should be focused on.
The evaluation values for "deviation amount" and "number of abnormal occurrences" for the transport vehicle A016 are larger than those for the other transport vehicles. Therefore, for example, maintenance should be focused on the left-right balance.
Then, the processing procedure ends.

(Modification)
In the above, an example was described in which various numerical values were displayed for each piece of equipment or worker. However, when the display processing unit 22 of the logistics management device 1 accepts a user's classification of multiple pieces of equipment or workers into multiple groups, it can also display numerical values such as ratios indicating work efficiency (the numerical values in FIGS. 11 to 16) for each group. A group here is, for example, equipment of the same type, workers belonging to the same organization, equipment or workers belonging to the same area in a logistics center, etc.

Furthermore, when the display processing unit 22 of the logistics management device 1 receives a user's designation of an arbitrary state from among many candidate states, it can also display a numerical value such as a ratio indicating the work efficiency for each of the received states. For example, when the logistics management device 1 receives "warehousing or shipping work", it displays the ratio of time during the specified time period that an individual piece of equipment, or a group of pieces of equipment of that type, spent performing "warehousing or shipping work".

In the above, the amount of deviation (FIG. 16) was described as an example of the logistics management device 1 displaying measurement information other than the start and end times of a state. However, the logistics management device 1 can also display any other measurement information that can be measured by the sensors of each device, such as the weight of a shelf or the rotation angle of a loading platform, for each device or for each group of devices.

(Effects of this embodiment)
The advantages of the logistics management device of this embodiment are as follows.
(1) The logistics management device can display the time ratio of a certain state during a certain period of time.
(2) The logistics management device can accurately obtain the duration of a state based on the start time and end time of the state.
(3) The logistics management device can display the time ratio of a state for each group of multiple devices.
(4) The logistics management device can allow the user to select a state of particular interest.
(5) The logistics management device can display time ratios in chronological order.
(6) The logistics management device can display measurement information necessary for maintenance.

The present invention is not limited to the above-described embodiments, but includes various modified examples. For example, the above-described embodiments have been described in detail to make the present invention easier to understand, and are not necessarily limited to those having all of the configurations described. It is also possible to replace part of the configuration of one embodiment with the configuration of another embodiment, and it is also possible to add the configuration of another embodiment to the configuration of one embodiment. It is also possible to add, delete, or replace part of the configuration of each embodiment with other configurations.

1 Logistics management device 2 Storage space 3 Shelf 4 Transport vehicle (equipment)
5. Charger (device)
6 Station (equipment)
7 Worker 8 Work robot (station equipment, device)
9 Network 11 Central control unit 12 Input device 13 Output device 14 Main memory device (storage unit)
15 Auxiliary storage device (storage unit)
16 Communication device 21 Log collection unit 22 Display processing unit 31 Vehicle information 32 Charger information 33 Worker information 34 Station information 35 Order information

Claims (19)

a log collection unit that acquires, based on log information of a plurality of transport vehicles transporting items, information on a time when the transport vehicles were performing a task aimed at transporting items and information on a time when the transport vehicles were performing a predetermined task other than the task aimed at transporting the items;
a display processing unit that outputs, based on the information acquired by the log collecting unit, a vehicle work rate that is an index relating to the time during which the plurality of transport vehicles perform work aimed at transporting the item during a predetermined period, and a vehicle operation rate that is an index relating to the time during which the plurality of transport vehicles perform work aimed at transporting the item and the predetermined work during the predetermined period;
wherein the predetermined task includes charging the transport vehicle . The logistics management device according to claim 1 , wherein the display processing unit is capable of outputting information relating to the work efficiency of each of the plurality of transport vehicles. 3. The logistics management device according to claim 2, wherein the information regarding the work efficiency includes information regarding the time during which each of the transport vehicles was performing work aimed at transporting the items during the specified period, and information regarding the time during which each of the transport vehicles was operating for the specified work. The task of transporting an item includes a pickup state in which the item moves to a position to be transported,
The logistics management device according to claim 2 , wherein the display processing unit further outputs information relating to a time during which each of the transport vehicles was in the pick-up state. The logistics management device according to claim 2, further characterized in that the display processing unit outputs information regarding the time that each of the transport vehicles was performing work during the specified period and information regarding the time that each of the transport vehicles was waiting during the specified period. 2. The logistics management device according to claim 1, wherein the predetermined task includes a task of moving the transport vehicle to a waiting location. the transport vehicle transports the item to a station where a work is performed on the item,
the log collection unit acquires information about a time when the station was in a first state based on a log of the station;
The logistics management device according to claim 1 , wherein the display processing unit outputs a station work rate which is an index relating to a time during which work is performed at the station within the predetermined period. 8. The logistics management device according to claim 7 , wherein the display processing unit outputs a ratio of the number of the stations that have been operated at least once in the predetermined period to the total number of the plurality of stations. 8. The logistics management device according to claim 7 , wherein the display processing unit displays an indicator relating to a time during which the station waited until the transport vehicle arrived at the station during the predetermined period. The transport vehicle transports a shelf for storing items,
8. The logistics management device according to claim 7 , wherein the display processing unit outputs a hit rate which is an index relating to a ratio between a total number of types of items in a retrieval operation during a specified time period and a total number of shelves in the retrieval operation. The logistics management device according to claim 1 , wherein the display processing unit outputs information on time-series changes in the transportation vehicle work rate and the transportation vehicle operation rate. 2. The physical distribution management device according to claim 1, wherein the transport vehicle transports at least one of a shelf, a pallet, a tank, a basket, and a storage unit for storing items. a log collection unit that acquires, based on log information of a plurality of transport vehicles transporting items, information on a time when the transport vehicles were performing a task aimed at transporting items and information on a time when the transport vehicles were performing a predetermined task other than the task aimed at transporting the items;
a display processing unit that outputs, based on the information acquired by the log collecting unit, an indicator of the time during which the plurality of transport vehicles performed work aimed at transporting the item within a predetermined period, and an indicator of the time during which the plurality of transport vehicles performed the predetermined work within a predetermined period;
Equipped with
The logistics management device , wherein the predetermined task includes charging the transport vehicle . The logistics management device according to claim 13 , wherein the predetermined task includes a task of moving the transport vehicle to a waiting location. The logistics management device according to claim 13, further characterized in that the display processing unit outputs information regarding the time that the transport vehicle was performing work during the specified period and information regarding the time that the transport vehicle was waiting during the specified period . The log collection unit of the logistics management device includes:
Based on log information of a plurality of transport vehicles transporting items, information on a time when the transport vehicles were performing a task aimed at transporting items and information on a time when the transport vehicles were performing a predetermined task other than the task aimed at transporting the items are obtained;
The display processing unit of the logistics management device
based on the information acquired by the log collection unit, outputting a vehicle work rate which is an index relating to the time during which the plurality of transport vehicles performed work aimed at transporting the item during a predetermined period , and a vehicle operation rate which is an index relating to the time during which the plurality of transport vehicles performed work aimed at transporting the item and the predetermined work during the predetermined period;
The logistics management method according to claim 1, wherein the predetermined task includes charging the transportation vehicle . The log collection unit of the logistics management device includes:
Based on log information of a plurality of transport vehicles transporting items, information on a time when the transport vehicles were performing a task aimed at transporting items and information on a time when the transport vehicles were performing a predetermined task other than the task aimed at transporting the items are obtained;
The display processing unit of the logistics management device
Based on the information acquired by the log collection unit, outputting an index related to the time during which the plurality of transport vehicles performed work aimed at transporting the item within a predetermined period of time, and an index related to the time during which the plurality of transport vehicles performed the predetermined work within the predetermined period of time ;
The logistics management method according to claim 1, wherein the predetermined task includes charging the transportation vehicle . Computer,
a log collection unit that acquires, based on log information of a plurality of transport vehicles transporting items, information on a time when the transport vehicles were performing a task aimed at transporting items and information on a time when the transport vehicles were performing a predetermined task other than the task aimed at transporting the items;
a display processing unit that outputs, based on the information acquired by the log collecting unit, a vehicle work rate that is an index relating to the time during which the plurality of transport vehicles perform work aimed at transporting the item during a predetermined period, and a vehicle operation rate that is an index relating to the time during which the plurality of transport vehicles perform work aimed at transporting the item and the predetermined work during the predetermined period;
A logistics management program for operating as a logistics management system,
The logistics management program, wherein the predetermined task includes charging the transport vehicle . Computer,
a log collection unit that acquires, based on log information of a plurality of transport vehicles transporting items, information on a time when the transport vehicles were performing a task aimed at transporting items and information on a time when the transport vehicles were performing a predetermined task other than the task aimed at transporting the items;
a display processing unit that outputs, based on the information acquired by the log collecting unit, an indicator of the time during which the plurality of transport vehicles performed work aimed at transporting the item within a predetermined period, and an indicator of the time during which the plurality of transport vehicles performed the predetermined work within a predetermined period;
A logistics management program for operating as a logistics management system,
The logistics management program, wherein the predetermined task includes charging the transport vehicle .

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