WO2012111217A1 - 資源運用計画作成装置および資源運用計画作成方法 - Google Patents
資源運用計画作成装置および資源運用計画作成方法 Download PDFInfo
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- WO2012111217A1 WO2012111217A1 PCT/JP2011/078031 JP2011078031W WO2012111217A1 WO 2012111217 A1 WO2012111217 A1 WO 2012111217A1 JP 2011078031 W JP2011078031 W JP 2011078031W WO 2012111217 A1 WO2012111217 A1 WO 2012111217A1
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- 238000012423 maintenance Methods 0.000 claims abstract description 66
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- 238000007689 inspection Methods 0.000 description 23
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
- G06Q50/40—Business processes related to the transportation industry
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/08—Logistics, e.g. warehousing, loading or distribution; Inventory or stock management
- G06Q10/083—Shipping
- G06Q10/0835—Relationships between shipper or supplier and carriers
- G06Q10/08355—Routing methods
Definitions
- the present invention relates to a resource management plan creation support device, a resource management plan creation support method, and a resource management plan creation support program. Specifically, it takes into consideration the regularity of work and resource allocation related to the maintenance and operation of resources in transportation services.
- the present invention relates to a technology that makes it possible to create a resource management plan.
- a plan that considers resource operation is hereinafter referred to as a resource operation plan.
- the railway resource management plan is based on the characteristics of individual vehicles, such as the type and performance of the vehicles, the timing of return at the station, the time to return to the vehicle base for inspection, etc.
- the vehicle to be assigned to must be selected, which is a difficult task manually.
- the creation of resource management plans for railways has not yet been systematized, and human resources are being created based on the experience of skilled workers.
- Patent Document 1 and Non-Patent Document 1 have means for re-creating a resource operation plan that also considers the inspection cycle for train schedules that have been modified to recover from disturbances when trains are disturbed.
- Patent Document 2 has means for finding a place where an unscheduled inspection work can be performed based on the connection between trains and creating a resource management plan in which a temporary inspection work is inserted.
- Patent Document 3 has means for receiving a desired pattern from a user regarding a train turnaround and a vehicle assigned to the train, and creating a resource operation plan in consideration of the user's intention regarding the connection of the train.
- an operation pattern For example, in the case of railways, vehicles that are not undergoing large inspections are left at the depot as a spare vehicle for one day before inspection, or are reserved for leveling the distance traveled and the number of days traveled between multiple vehicles. They intentionally put the period of detention as a car into the plan.
- regularity is an important factor not only for carrying out maintenance work on a regular basis, but also for enabling the site to perform work as usual in carrying out maintenance work and vehicle storage work.
- Patent Document 1 Patent Document 2, and Non-Patent Document 1 aim to automatically create a vehicle operation plan, and do not consider the regularity of vehicle operation, for example, the regularity of allocation of vehicles to trains.
- Patent Document 3 has a function of accepting a desired pattern from a user, a spare vehicle is regarded as the same as a business vehicle, and an operation pattern including a preliminary operation cannot be handled.
- the resource management plan creation method is Reading the operation schedule information of the transport service; Based on the operation schedule information, for each of a plurality of transportation processes included in the operation schedule, a node having at least the start place, the start time, the end place, and the end time of the transport process as attributes is created.
- Creating a network model of a transportation process by creating a path connecting nodes representing a transportation process that can be operated continuously using the same transportation resource, and Obtain information about spare resources, create a spare resource node having at least the storage location and available time zone of the spare resource as attributes, add it to the network model, and configure the spare resource node attributes and other network models Adding a path connecting the node representing the operation process that can be operated using the reserve resource and the reserve resource node to the network model based on the attribute of the node; Extracting from the network model a combination of paths composed of a plurality of paths such that one transport resource or spare resource is allocated to each node other than the spare resource node constituting the network model; For the extracted combination, there is a step of creating an operation plan for the transport resource and the reserve resource by allocating the transport resource or the reserve resource to each of the plurality of paths constituting the combination and outputting the operation plan.
- FIG. 1 is a block diagram illustrating a configuration example of a resource management plan creation support apparatus.
- the resource management plan creation support apparatus 1000 includes a memory 1001, a storage unit 1100, a display unit 1200, an input unit 1201, a central processing unit (CPU) 1202, a communication unit 1203, and a data bus 1204 that connects them.
- CPU central processing unit
- the display unit 1200 is a display or the like, and displays information to the user such as the execution status and execution result of processing by the resource management plan creation support apparatus 1000.
- the input unit 1201 is a device for inputting instructions to a computer such as a keyboard and a mouse, and accepts input from a user.
- a central processing unit (CPU) 1202 executes various programs stored in the memory 1001.
- the communication unit 1203 exchanges various data and commands with other devices via a LAN (Local Area Network) or the like.
- the storage unit 1100 stores various data for the resource management plan creation support apparatus 1000 to execute processing.
- the memory 1001 holds various programs 1002 executed by the resource management plan creation support apparatus 1000 and temporary data.
- the storage unit 1100 stores resource information 2, route information 3, history information 4, and operation information 1.
- an operation schedule reading unit 1003, an operation history reading unit 1004, a network creation unit 1005, a plan creation unit 1006, a change acceptance unit 1007, and an operation pattern creation unit 1008 are stored as a program 1002.
- the operation schedule reading unit 1003 reads the operation information 1 stored in the storage unit 1100.
- the operation history reading unit 1004 reads the user history information 4 stored in the storage unit 1100.
- the network creation unit 1005 creates a network model representing a resource operation plan based on the operation information read by the operation schedule reading unit 1003 and the history information read by the operation history reading unit 1004. Details regarding this network model are described in FIG.
- the plan creation unit 1006 creates a constraint condition based on the network model created by the network creation unit 1005, creates a resource operation plan so as to satisfy the created constraint condition, and displays the created resource operation plan via the display unit 1200. And present it to the user.
- the change accepting unit 1007 accepts a change to the resource operation plan presented to the user by the plan creating unit 1006 from the user via the input unit 1201.
- the operation pattern creation unit 1008 changes the network model created by the network creation unit 1005 based on the history information 4 read by the operation history reading unit 1004 or the change accepted by the change acceptance unit 1007, and changes the resource operation plan. Is added to the history information 4.
- FIG. 2 is a flowchart showing an example of a basic operation procedure of the resource management plan creation support apparatus 1000. First, an outline of the flowchart regarding the operation procedure will be described.
- the operation schedule reading unit 1003 reads the operation information 1 stored in the storage unit 1100 (step S201).
- the network creation unit 1005 creates a network model that represents an operation plan of a transport device such as a vehicle based on the operation schedule read in S201 (step S202).
- the network model created here will be described in detail with reference to FIG. 5, and the network model creation method will be described in detail with reference to FIG.
- the operation history reading unit 1004 reads the user history information 4 stored in the storage unit 1100 (step S203), and determines whether there is history information (step S204). If there is history information, the process proceeds to reflection of the operation pattern (step S205), and if there is no history information, the process proceeds to creation of a resource operation plan (step S206).
- the operation pattern creation unit 1008 changes the network model created in S202 based on the operation history included in the history information read in S203, and if it is a continuation from S209, the operation pattern is created in S209. Based on the received change, the latest version of the network model is changed (step S205). The procedure for changing the network model will be described in detail below with reference to FIG.
- the plan creation unit 1006 creates a mathematical model formulated as a transportation plan problem based on the network model created in the series of steps S201 to S205, and creates a resource management plan that satisfies the conditions expressed by the mathematical model ( Step S206).
- the mathematical model and the plan creation procedure created here will be described in detail with reference to FIG.
- the plan creation unit 1006 presents the resource management plan result created in S206 to the user via the display unit 1200 (step S207). At this time, if a plurality of plan results are created in S206, all of them are displayed.
- the plan creation unit 1006 determines whether or not there is an end instruction from the user (step S208). If there is an end instruction, the series of processing ends, and if there is no end instruction, the plan result is changed. Proceed to reception (step S209).
- the plan creation unit 1006 accepts a change to the plan result presented in S207 from the user via the input unit 1201 (Step S209), and proceeds to S205.
- the service information 1 defines the process for each minimum unit of transport service.
- the minimum unit of transportation service on a railroad is a train, and is defined by a station where the train stops or passes from the first station to the last station, arrival time / departure time or passage time of each station.
- Resource information 2 defines transport equipment used for transport services.
- resource information in a railway is information that defines a vehicle. Specifically, the vehicle name or identification number for uniquely identifying the vehicle, the presence or absence of maintenance work (such as inspection or cleaning) scheduled to be performed on the day of operation, the time when the maintenance work can be performed, the place where the maintenance work is performed, the vehicle It is composed of a route identification number for uniquely identifying a transport service (corresponding to a train in a railway) assigned to
- the route information 3 defines in what order one transport equipment executes the minimum unit of transport service.
- the route information is a list of train information assigned to one vehicle in consideration of turning-back operation of the vehicle and storage / drawing to a vehicle base (see FIG. 3).
- the train information here is a train name or a train ID that uniquely identifies a train.
- FIG. 3 shows how a train is assigned to each of the four vehicles. That is, one vehicle for train 1, train 4 and train 8, another vehicle for train 2, train 5, train 7 and train 9, another vehicle for train 3 and train 6, and train 10 Another vehicle is assigned to each.
- the history information 4 is a history of changes made by the user to the plan result created by the resource management plan creation support apparatus 1000 in the past. Details of the items will be described later in the description of step S209 “Reception of change”.
- the vehicle operation arrangement is a task of changing the allocation of vehicles to a train in accordance with the changed operation schedule when the train operation schedule is suddenly changed due to an accident or a vehicle failure.
- the vehicle allocation changing means includes means for changing the train assigned at the turn-back station, means for temporarily drawing a spare train detained at the vehicle base, and means for temporarily storing the vehicle in the vehicle base.
- FIG. 3 and FIG. 4 show explanations of charts used in railway transportation services and data used as an example in this embodiment.
- FIG. 3 is a diagram showing a train operation schedule.
- the initial diagram of FIG. 3 is created based on the operation information 1, and after performing S206 “Create resource management plan”, FIG. 3 is created based on the plan creation result.
- the vertical axis 31 represents a station, and the horizontal axis 32 represents time.
- a train is drawn from the start station to the end station of the train according to the time to represent one train (hereinafter referred to as train streak).
- the thick line 33 represents one train that starts at the station C around 6 o'clock and ends at the station A around 6:30 o'clock.
- a line segment connecting two train lines like a line segment 34 represents a train group assigned to one vehicle.
- the train 1, the train 4, and the train 8 are connected as a series of train groups, which means that one vehicle travels in that order.
- a symbol represented by “O” like symbol 35 represents a timing to pull out the vehicle from the depot.
- the symbol 35 represents that the vehicle is pulled out from the vehicle base adjacent to the station C in accordance with the departure of the train 1.
- FIG. 4 is a diagram showing the assignment of trains to each train.
- the organization means a group of a plurality of vehicles assigned to a train.
- the initial diagram of FIG. 4 is created based on the resource information 2 and the route information 3, and after performing S206 “Create resource operation plan”, FIG. 4 is created based on the plan creation result.
- FIG. 4 includes a horizontal axis 41, a composition name 42, and allocation information 43.
- Axis 41 represents time.
- the organization name 42 represents a name for uniquely identifying the organization.
- the assignment information 43 represents the assignment of trains to the formation shown in the formation 42.
- Each assigned train is represented by one horizontal bar (for example, horizontal bar 44), and the train name is displayed near the horizontal bar (for example, train name 45).
- a symbol representing the scheduled work is displayed.
- the symbol 46 represents that the maintenance work called the inspection A is scheduled to be performed after the formation C travels as the train 6.
- FIG. 5 shows a network model of the resource operation plan used in the present invention.
- FIG. 5A shows a network model representing operation information
- FIG. 5B shows a network model representing preliminary operation.
- FIG. 5A and FIG. 5B are divided into two for convenience of explanation. However, when creating a resource management plan, these are integrated and handled as one network model.
- FIG. 5 (a) is a network model representing candidates that can be created as a route, and includes a formation node, a train node, a termination node, a connection link, and a termination link.
- Formation node is a node that represents a formation to which a route is assigned.
- One organization node is set for each organization.
- the knitting node is the start time of the time zone in which the knitting can be used, the end time of the time zone in which the knitting can be used, the position detained at the start of operation (adjacent or detained station of the depot), It has the starting station of the planned route and the end station of the original planned route as attributes.
- Train node The train node represents a train included in the operation schedule. One train node is set for each train.
- the train node has a train start station, end station, start time, and end time as attributes.
- Terminal node represents the end of the path.
- One terminal node is set per organization.
- the terminal node has an organization name or organization ID that uniquely identifies the organization and an end station of the route planned in the original plan as attributes.
- the terminal node 51 represents the terminal of the train of the formation A.
- the end of the route of the original plan of formation A is the train 8
- the train 8 ends at the station A. Therefore, the value of the attribute of the terminal station of the terminal node 51 is “station A”.
- connection link is a directional link that connects train nodes, between train nodes and train nodes, and between train nodes and termination nodes, and is created as follows.
- the connection link between the train nodes is created so that the connection between the time and the station is established based on the start station, the start time, the end station, and the end time of the train represented by the train node.
- the train node 53 represents the train 1
- the first station is station C
- the last station is station A
- the first train time is 6:00
- the last train time is 6:30
- the node 54 represents the train 4.
- the first station is station A
- the last station is station C
- the first train time is 6:40
- the last train time is 7:05. Comparing these two train nodes, the terminal station of the node 53 is equal to the starting station of the node 54, so the connection of places is established.
- connection links can be created from the node 53 toward the node representing the train 5, the node representing the train 3, and the node representing the train 10, respectively.
- connection links between trains that are continuously assigned to the same organization in the original resource management plan are set with a weight that is easier to choose as a solution than the other connection links.
- a route is created by searching for a tour route that reduces the link weight on the network shown in FIG. Therefore, a small weight is set for the connection link between trains that are continuously assigned to the same train in the original resource management plan. This makes it possible to obtain a plan with as few changes as possible from the original plan.
- the weights that are easily selected as connection links have the same meaning.
- the connection link between the train node and the train node includes the start and end times of the train represented by the train node, the end station and the finish time, and the start time and end time of the available time zone of the train represented by the train node. Based on the knitting position at the start, create a connection between time and place. For example, the available time zone of the knitting represented by the knitting node 52 (knitting A) is 6 o'clock and the start position is the station C. Therefore, a train representing a train that starts from the knitting node 52 after 6 o'clock. Create a connection link towards the node. That is, connection links are created toward train nodes representing train 1, train 2, train 6, and train 8, respectively.
- connection links that show the same allocation as the original resource management plan, set a weight that is easier to choose as a solution than other links.
- connection link between the train node and the terminal node is created from the train node that can be set as the last train on the route to the terminal node.
- a train that can be set as a final train on a route is basically a train that has a station adjacent to a depot or a station that can be detained in the station premises until the next day as a terminal station. If this is not the case, it is not desirable because it will run forward to store the vehicle in the depot.
- connection link that connects the train node that represents the train that is the end of the route in the original plan and the end node.
- Termination link is a link for constraining the route to end at the point where the organization was scheduled in the original resource management plan.
- links are created from one end node toward all formation nodes, and weights are set based on restrictions on the route end point. That is, the value of the terminal station on the original resource management plan held by the terminal node is compared with the value of the terminal station on the resource management plan held by the organization node.
- a weight value is set to a termination link connecting the termination node and the corresponding composition node so that the termination link is more easily selected than the termination link extending from the corresponding termination node to another composition node.
- the terminal node 51 represents the terminal of the route of the formation A
- the terminal station of the original plan is the station A
- the node representing the formation A is the formation node 52
- the final station of the original plan is the station A. Since the terminal station of the terminal node 51 and the terminal station of the train node 52 are the same, a value smaller than the link extending from the terminal node 51 to another train node is set for the terminal link connecting the terminal node 51 and the train node 52.
- the end node 55 represents the end of the route of the formation B. From FIG. 4, the end of the route of the formation B is the train 9, so that the terminal station is the station C.
- the end node 55 Since the end of the route of the formation C is also the station C, the end node 55 has the same value for both the end link with the formation node 57 representing the formation B and the end link with the formation node 58 representing the formation C.
- Set the weight By setting the weight of the terminal link, even when the train allocated at the end of the route is different from the original resource operation plan, it is possible to increase the possibility that the same train is allocated to the terminal station.
- FIG. 5 (b) is a network model representing the preliminary organization.
- the preliminary formation here refers to a formation that is not assigned a route in the original plan and is scheduled to be detained all day in the vehicle base.
- These trains may be assigned as temporary trains, but should basically be detained in the depot. Therefore, it is desirable to return to the vehicle base within the operation organizing period.
- Even in the case of preliminary organization when it is not necessary to return to the vehicle base within the operation organizing target period, it is expressed as the organization node shown in FIG.
- the preliminary train there is a train composed of a train to which a vehicle owned by another company that needs to be returned to the original place within a predetermined period is assigned in addition to the train composed of the above-mentioned temporary train.
- FIG. 5 (b) includes a spare formation node, a spare termination node, a spare train node, a connection link, a termination link, and a train node.
- the spare knitting node is a node representing spare knitting, and one spare knitting node is set for one spare knitting.
- the station has a station adjacent to the detained vehicle base and the start time and end time of the time zone in which the preliminary train can be drawn from the vehicle base as attributes.
- the spare train node is a node representing spare operation, and is set by the number of spare trains. It has a station adjacent to the vehicle base and a start time and an end time of a time zone in which the vehicle can be stored in the vehicle base as attributes.
- the spare termination node is a node representing the end of the path of the preliminary organization. It has an organization name or organization ID that uniquely identifies the preliminary organization and a station adjacent to the vehicle base as attributes.
- connection link is a link that connects the spare train node and the spare train node, the spare train node and the spare end node, the spare train node and the train node, and the train node and the spare train node. Create as follows.
- connection link from the spare train node to the spare train node has the same attribute value as the adjacent station of the depot, create a link from the spare train node to the spare train node To do.
- This connection link is set with a weight that is more easily selected when selecting a solution than other connection links.
- a route including only three nodes, ie, a spare train node, a spare train node, and a spare terminal node, indicates that the spare train is detained at the depot as it is.
- connection link between the train node and the spare train node consists of the train station attributes of the first departure station, first departure time, last stop station, last arrival time, the train station adjacent to the train base attribute of the spare train node, and the vehicle base. Based on the start time and end time of the time zone in which the spare train can be pulled out from, the link is created from the spare train node to the train node so that the time and place are connected.
- connection link between the train node and the spare train node is the same at the train station's terminal station and the adjacent train station as the attribute of the spare train node, and the train node's terminal time is the attribute of the spare train node.
- a link is created from a train node to a spare train node when it falls within a certain vehicle storage time zone.
- Termination link is a link from the spare termination node to the spare train node if the spare termination node and the spare train node have the same value as the adjacent station of the vehicle base. Create It is created only from the spare terminal node to the spare train node, and no termination link from the spare terminal node to the other train node is created.
- an operation pattern is created based on a change made by the user to the resource operation plan, and is reflected in the network model described above.
- the operation pattern represents a conventional method of resource operation, and records partial changes that the user repeatedly makes to the resource operation plan.
- operation patterns are classified into the following two types.
- connection This is a pattern for designating train groups that are continuously assigned to one train. For example, if it is specified that train 7 is assigned after train 4 and then train 9 is assigned, train 4, train 7 and train 9 are all assigned to the same organization in the specified order. It means that no other trains are assigned in the meantime.
- the operation pattern is stored in the history information 4.
- the history information 4 will be described with reference to FIG.
- the history information 4 includes a target line section 81, a pattern type 82, and an operation pattern 83.
- the target line 81 is a line name or line ID for uniquely identifying the line to which the operation pattern is applied.
- a line section here is a line which manages the operation of a train collectively.
- the pattern type 82 is a pattern name or a pattern ID for uniquely identifying the operation pattern classification.
- the operation pattern 83 is detailed information of the operation pattern. Specifically, when the operation pattern is the above-mentioned “connection”, the train name or the train ID for uniquely identifying the target train and the order relation of the target trains are stored. An example in which the example shown in the above operation pattern “connecting” is stored in the history information is shown in the record 84. When the operation pattern is the above-mentioned “exchange”, the train name or train ID for uniquely identifying the target train is stored. An example in which the example shown in the above operation pattern “exchange” is stored in the history information is shown in a record 85.
- a resource management plan is created using the network model as described above. The details of the procedure for creating a resource management plan are described below.
- step S201 the operation schedule reading unit 1003 reads the operation information 1 stored in the storage unit 1100.
- step S202 the network creation unit 1005 creates the network model shown in FIG. 5 based on the operation information read in S201. Details of the procedure for creating the network model will be described later with reference to FIG.
- step S203 the operation history reading unit 1004 reads the history information 4 stored in the storage unit 1100.
- step 204 the operation history reading unit 1004 proceeds to create a resource operation plan (step S206) when there is no history information, and proceeds to reflect the operation pattern (step S205) when there is history information.
- step S205 the operation pattern creation unit 1008 changes the network model created by the network creation unit in S202 based on the operation history read by the operation history reading unit 1004 in S203.
- the change method is shown below. (1)
- a node representing the target train is extracted, and a value that can be easily selected is set as the weight of the link connecting the nodes. For example, when a resource management plan is created by searching for a path with the smallest possible network link weight, a value smaller than the currently set value is set as the weight between nodes of the target train.
- the nodes to be represented are extracted (referred to as a pre-operation train node and a post-operation train node, respectively).
- the link weight between the previous operation train node of the other target train and the train node of the target train, and the link between the post-operation train node of the other target train and the train node of the target train Is set to a value at which the link is more easily selected than the currently set value.
- the target train is the first on the route, instead of the previous operation train node, a train node having a connection link with the target train node is extracted, and if the target train is the last on the route, the post-operation train Similar processing is performed by extracting a terminal node having a connection link with the target train node instead of the node.
- a link with a smaller weight is likely to be selected.
- a node representing the train 2 is extracted from the network model as a previous operation train node of the train 5, and the extracted node (in this case, the train 2 is selected).
- the weight of the connection link from the node to the node representing the train 3 is changed to a value smaller than the currently set value.
- a node representing train 7 is extracted from the network model as a post-operation train node of train 5, and the weight of the connection link toward the node extracted from the node representing train 3 (here, the node representing train 7) is currently set. Change to a value smaller than the current value.
- the weight of the connection link is changed with respect to the train 3, but since the train 3 is the first train on the route, the node representing the formation C is extracted instead of the previous operation train, and the extracted node (here, the formation)
- the weight of the connection link from the node representing C to the node representing the train 5 is changed to a value smaller than the currently set value.
- a node representing train 6 is extracted as a post-operation train node of train 3, and the weight of the connection link going to the node extracted from the node representing train 5 (here, the node representing train 5) is currently set. Change to a smaller value.
- step S206 the plan creation unit 1006 creates a resource operation plan based on the network model created by executing S201 to S0205 or the network model created by executing S205 after S209. A detailed procedure will be described below with reference to FIG.
- step S207 the plan creation unit 1006 presents the plan created in S206 to the user.
- step S208 the plan creation unit 1006 determines whether or not the user has instructed the end of plan creation. When the end is instructed, the plan creation result so far is stored in the storage unit 1100, and a series of processing is performed. If it is determined that the end is not instructed, the process proceeds to accepting a change in step S209.
- step S209 the change receiving unit 1008 receives a change from the user with respect to the plan presented to the user by the plan creating unit 1006 in S207, generates history information, and stores the history information in the history information 4 of the storage unit 1100.
- the configuration of the change acceptance screen will be described with reference to FIG.
- the reception screen includes a screen frame 71, a vehicle allocation diagram 72, a connection designation button 73, an exchange designation button 74, and a pattern setting button 75. This reception screen is created by the change reception unit 1007 and displayed on the display unit 1200.
- the screen frame 71 is a screen frame of the reception screen.
- Vehicle allocation diagram 72 is a diagram showing the resource management plan created in S206. The details of the figure are as described in the explanation of FIG. The user designates the train to be changed through this figure.
- the link designation button 73 is a button for the user to designate that the type of operation pattern is “connect”.
- the exchange designation button 74 is a button for the user to designate that the operation pattern type is “exchange”.
- the pattern setting button 75 is a button for the user to instruct to generate an operation pattern.
- An example of the operation pattern “Tsunagi” is shown in FIG.
- the train 7 and the train 9 are assigned to one train, the corresponding train is designated as in the input 76 and the input 77, and then the connection designation button 73 is pushed down.
- the pattern setting button 75 is pressed down.
- the designation of the train and the depression of the button are accepted through an input device such as a mouse or a touch pen.
- FIG. An example of the operation pattern “exchange” is shown in FIG.
- the corresponding train is designated as in the input 78 and the input 79, then the exchange designation button 74 is pressed down, and finally the pattern setting button 75 is selected. Press down.
- the designation of the train and the depression of the button are accepted through an input device such as a mouse or a touch pen.
- FIG. 8 is used to show the network model generation procedure of S202.
- step S601 the network creation unit 1005 reads the route information 3 stored in the storage unit 1100.
- step S602 the network creation unit 1005 reads the resource information 2 stored in the storage unit 1100.
- step S603 the network creation unit 1005 divides the route information read in S601 into trains, creates a train node for each train, extracts attributes of each train from the route information, and extracts the train information of the train. Assign to a node.
- the details of the train node and the attributes assigned to the train node are as described in the description of the network model shown in FIG.
- the identification information used as the train name of the train on the route information is given as the identification information of the train node of the train.
- step S604 the network creation unit 1005 creates a train node, a termination node, a spare train node, a spare train node, and a spare termination node based on the resource information read in S602. Add identification information and attributes. Details of these nodes (such as attributes of the nodes) are as described in the description of the network model shown in FIG.
- step S605 the network creation unit 1005 selects one node from the nodes created in S603 and S604.
- step S606 the network creation unit 1005 determines whether the node selected in S605 is a termination node or a backup termination node. If the node is a termination node or a backup termination node, the network creation unit 1005 proceeds to create a termination link in step S607. However, if it is not a spare end node, the process proceeds to the creation of a connection link in step S609.
- step S607 and step S608 the network creation unit 1005 creates termination links (or spare termination nodes) as described below for the case where the node selected in S605 is a termination node and a spare termination node, respectively (S607). ) And termination link weight setting (S608).
- step S607 an end link is created from the node selected in step S605 to the train node having the same end station as the “end station in the original plan” which is one of the attributes of the node (end link 1). Further, a termination link is created from the node selected in S605 toward the remaining train node (termination link 2).
- step S608 weights are set for the termination link 1 and the termination link 2 created in step S607. Here, a weight value is set for the end link 1 so that it is easier to select than the end link 2 in the creation of the resource operation plan.
- step S607 a standby train node in which the “station adjacent to the vehicle base” held as the attribute is the same as the node selected in S605 is extracted, and the terminal link is selected from the node selected in S605 toward the extracted node.
- a weight is set for the termination link created in S607.
- a weight value is set for the termination link so that it can be more easily selected in the creation of the resource operation plan than the other links connected to the backup termination node.
- step S609 the network creation unit 1005 creates a connection link from the node selected in S605 to a node that can be connected based on the comparison of the start station, start time, end station, and end time. The details are as described in the description of the network model shown in FIG.
- step S610 the network creation unit 1005 sets a weight for the connection link created in S609.
- a weight value is set so that it can be easily selected in the creation of the resource management plan.
- step S611 the network creation unit 1005 determines whether or not the processing of S607 to S608 or S609 to S610 has been performed on all the nodes created in S603 and S604, and if so, ends the series of processing. If not, the process proceeds to S605.
- step S901 the plan creation unit 1006 temporarily excludes the spare formation node, the spare train node, and the spare end node from the network model created by the series of processing in S205 after S201 to S205 or S209. . This is to create a plan so that the spare organization is not used as much as possible.
- step S902 the plan creation unit 1006 temporarily excludes the end link whose weight is greater than a certain value from the network model of the processing result in S901. This is to create a plan so that the end station of the route of each train is the same as the original plan.
- step S903 the plan creation unit 1006 creates a circuit (that is, a route returning to the departure node without passing through any node other than the departure node more than once) based on the network model of the processing results of steps S901 to S902.
- the circuit created here is a closed circuit starting from a knitting node and returning to the knitting node from the shape of the network model, or starting from the spare knitting node and returning to the standby knitting node. .
- step S904 the plan creation unit 1006 searches for a combination of traveling circuits (referred to as a forward circuit set) that covers all the nodes only once from the plurality of forward circuits created in step S903. That is, it searches for a solution of the following set partitioning problem. ⁇ Constant>
- the objective function means obtaining a circuit set that minimizes the sum of the weights, and the condition (1) indicates that each node is included in only one circuit in the circuit set that is the solution.
- the condition (2) means that there are as many tours as the number of trains included in the tour set as a solution. Note that a tour that includes two or more organization nodes may be generated in the tour created in S903, and therefore it is necessary to set the condition (2) so as not to select such a tour.
- a condition that one organization is assigned to only one route may be added.
- the organization is also expressed as a node. Is included in the above conditions.
- Each of the tours included in the tour set obtained here is a route assigned to the train represented by the train node included in the tour.
- step S905 the plan creation unit 1006 determines whether or not a solution has been obtained in the search in S904, and if it is obtained, proceeds to the determination in S906, and if not, proceeds to the determination in S910.
- step S906 the plan creation unit 1006 determines whether the solution obtained in S904 includes a termination link having a weight greater than a certain value. If included, the process proceeds to S907. If not included, the process proceeds to S912. move on.
- the constant value of the weight here is the same value as the constant value used in S902. This is a process for the purpose of determining whether or not the solution includes a composition in which the end station of the route is different from the end station of the original plan.
- step S907 the plan creation unit 1006 stores the solution obtained in S904 in the storage unit 1100 as a resource operation plan candidate.
- step S908 the plan creation unit 1006 determines whether or not S903 to S904 have been implemented, including the spare formation node, the spare train node, and the spare end node that were temporarily excluded in S901. If not, the process proceeds to S909, and if implemented, the process proceeds to S912.
- step S909 the plan creation unit 1006 returns the spare node, spare train node, and spare terminal node excluded in S901 to the network model.
- step S910 the plan creation unit 1006 determines whether or not steps S903 to S904 have been performed including the link temporarily excluded in step S902. If not, the process proceeds to step S911. move on.
- step S911 the plan creation unit 1006 returns the link excluded in S902 to the network model.
- step S912 the plan creation unit 1006 stores the solution obtained in S904 as a resource operation plan candidate in the storage unit 1100, and ends the series of processes.
- Example 1 a maintenance work plan for resources such as inspection and cleaning is not considered.
- the second embodiment shows an embodiment in the case where a resource operation plan is created including a maintenance work plan.
- description of the same configuration as that of the first embodiment will be omitted, and differences from the first embodiment will be described.
- FIG. 10 is an example of a network model of a resource operation plan including maintenance work. This network model is created by adding a maintenance work node representing maintenance work to the network model shown in FIG. 5 of the first embodiment.
- Maintenance work node performs maintenance work, maintenance work name or maintenance work ID for uniquely identifying the maintenance work represented by the node, maintenance work required time, start time and end time of maintenance work time, and maintenance work It has a station adjacent to a possible depot as an attribute.
- Maintenance work nodes are added by connecting maintenance work nodes and train nodes with connection links as shown below.
- a resource management plan is created by obtaining a network model circuit created as described above. This process is shown in FIG.
- the organization through the maintenance work node cannot be controlled only by creating a network model circuit. Therefore, in order to plan the maintenance work to be performed for the determined organization as much as possible, all the connection links to the maintenance work node are extracted from the tour route candidates including the train scheduled to carry out the maintenance work. Is set to a value that is more easily selected than other connection links.
- the train nodes before and after connecting to the maintenance work node are extracted from the circuit including the maintenance work node (referred to as the front train node and the rear train node), and the end of the front train node is reached. It is determined whether the difference between the time and the start time of the rear train node is greater than the time required for the maintenance work. If the time difference is smaller than the required time as a result of the determination, the weight of the connection link that connects the front train node, the rear train node, and the maintenance work node is less likely to be selected than the currently set weight value. Set to.
- the resetting of the above weights is performed after creating a candidate for a tour in S903 of the first embodiment (step S1101 in FIG. 11).
- inspection exchange represents a pattern in which when the maintenance work scheduled to be performed on a certain organization cannot be executed, the work is transferred to another organization that needs to perform the same maintenance work most recently.
- FIG. 12 is an example of an operation pattern reception screen for maintenance work.
- the screen configuration is the same as in FIG. 7.
- the symbol representing the maintenance operation is moved from the organization scheduled to perform the maintenance operation to another organization, so that the replacement source position and the replacement destination position are input.
- the history information is generated by depressing the pattern setting button 122.
- “Position” here is information indicating which train the maintenance work is performed before or after. Specifically, the train name or train ID for identifying the reference train and the reference train It is expressed by whether to do before or after.
- FIG. 13 shows an example of history information.
- the components of the history information are as described in FIG.
- a record 131 shows an example of an operation pattern related to maintenance work.
- the target line section 132 stores the line section that is the target of the operation pattern
- the pattern type 133 stores “inspection transfer” indicating the transfer pattern of the maintenance work
- the operation pattern 134 stores the operation pattern.
- Work name or work ID that uniquely identifies the maintenance work that is the application target of the train
- train name or train ID that uniquely identifies the transfer-source train
- inspection location train name or train that uniquely identifies the transfer-destination train
- the inspection execution position here is information that specifies whether the maintenance work is performed before or after the designated train.
- SYMBOLS 1000 Resource operation plan creation assistance apparatus, 1001 ... Memory, 1002 ... Program, 1003 ... Operation schedule reading part, 1004 ... Operation history reading part, 1005 ... Network creation part, 1006 ... Plan creation part, 1007 ... Change reception part, 1008 ... Operation pattern creation unit, 1100 ... Storage unit, 1200 ... Display unit, 1201 ... Input unit, 1202 ... CPU, 1203 ... Communication unit, 1204 ... Data path
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Abstract
Description
鉄道における資源運用計画は、車両の形式や性能などの個々の車両の特性や、駅での折返しのタイミング、検査のために車両基地へ戻す時刻などを考慮しながら、膨大な組合せの中から列車に割当る車両を選択していかねばならず人手では困難な作業である。しかし、鉄道における資源運用計画の作成については、システム化がまだ進んでおらず、熟練者の経験を頼りに人手の作成が続けられている。
輸送サービスの運行スケジュール情報を読み込むステップと、
運行スケジュール情報に基いて、当該運行スケジュールに含まれる複数の輸送行程各々について、当該輸送行程の始発場所、始発時間、終着場所、および終着時間を少なくとも属性として有するノードを作成し、各ノードの属性に基いて同じ輸送資源を用いて連続した運行が可能な運送行程を表すノード間を接続したパスを作成して、輸送行程のネットワークモデルを作成するステップと、
予備資源に関する情報を取得して、予備資源の保管場所および利用可能時間帯を少なくとも属性として有する予備資源ノードを作成してネットワークモデルに追加し、予備資源ノードの属性とネットワークモデルを構成する他のノードの属性とに基いて、予備資源を用いて運行が可能な運行行程を表すノードと予備資源ノードとを接続したパスをネットワークモデルに追加するステップと、
ネットワークモデルを構成する予備資源ノード以外の各ノードに、一つ運送資源若しくは予備資源が割り当てられるような、複数のパスから構成されるパスの組み合わせを、ネットワークモデルから抽出するステップと、
抽出された組み合わせについて、当該組み合わせを構成する複数のパスの各々に輸送資源または予備資源を割り当てることによって、輸送資源および予備資源の運用計画を作成して当該運用計画を出力するステップを有する。
資源運用計画作成支援装置1000は、メモリ1001、記憶部1100、表示部1200、入力部1201、中央演算処理装置(CPU)1202、通信部1203、およびこれらを接続するデータバス1204から構成される。
<業務の説明>
図3と図4に、鉄道の輸送サービスで用いる図表の説明と、本実施例で例として用いるデータを示す。
図5は、本発明で用いる資源運用計画のネットワークモデルを表す。図5(a)に、運行情報を表すネットワークモデルを示し、図5(b)に、予備運用を表すネットワークモデルを示す。図5(a)と図5(b)は説明の便宜上、2つに分けて示すが、資源運用計画の作成に際しては、これらを統合して1つのネットワークモデルとして扱う。
編成ノードは、行路が割当られている編成を表すノードである。一つの編成につき一つの編成ノードを設定する。編成ノードは、編成を利用可能な時間帯の開始時刻、編成を利用可能な時間帯の終了時刻、運用開始時に留置されている位置(留置されている車両基地の隣接駅または留置駅)、元計画の行路の開始駅、および元計画の行路の終着駅を属性として持つ。
列車ノードは、運行スケジュールに含まれる列車を表す。一つの列車につき一つの列車ノードを設定する。列車ノードは列車の始発駅、終着駅、始発時刻、および終了時刻を属性として持つ。
終端ノードは行路の終端を表す。一つの編成につき一つの終端ノードを設定する。終端ノードは、編成を一意に識別する編成名称または編成IDと、元計画で計画されていた行路の終着駅を属性として持つ。例えば、終端ノード51は、編成Aの行路の終端を表すものとする。図4に示した例では、編成Aの元計画の行路の終端は列車8であり、図3に示した例では、列車8は駅Aで終着する。よって、終端ノード51の終着駅の属性の値は「駅A」である。
接続リンクは、列車ノード間、編成ノードと列車ノードの間、列車ノードと終端ノードの間を結ぶ有向リンクであり、それぞれ以下のように作成する。
列車ノード間の接続リンクは、列車ノードが表す列車の始発駅と始発時刻と終着駅と終着時刻を基に、時刻と駅の接続が成り立つように作成する。例えば、列車ノード53は列車1を表しており、始発駅は駅C、終着駅は駅A、始発時刻は6時、終着時刻は6時半となる。また、ノード54は列車4を表しており、始発駅は駅A、終着駅は駅C、始発時刻は6時40分、終着時刻は7時5分となる。これら2つの列車ノードを比較すると、ノード53の終着駅はノード54の始発駅と等しいため場所の接続が成り立つ。かつ、ノード53の終着時刻はノード54の始発時刻よりも早いため、時刻の接続が成り立つ。よって、ノード53からノード54への接続リンクを作成することができる。同様に、ノード53から、列車5を表すノード、列車3を表すノード、列車10を表すノードそれぞれに向かって接続リンクを作成することができる。
列車ノードと編成ノードの間の接続リンクは、列車ノードが表す列車の始発駅と始発時刻と終着駅と終着時刻と、編成ノードが表す編成の利用可能な時間帯の開始時刻と終了時刻と運用開始時の編成の位置を基に、時刻と場所の接続が成り立つように作成する。例えば、編成ノード52の表す編成(編成A)の利用可能時間帯は6時であり、開始位置は駅Cであるため、編成ノード52から、6時以降に駅Cを始発する列車を表す列車ノードへ向かって接続リンクを作成する。つまり、列車1、列車2、列車6、列車8をそれぞれ表す列車ノードへ向かって接続リンクを作成する。
列車ノードと終端ノードの間の接続リンクは、行路の最終列車として設定可能な列車ノードから終端ノードへ向かって作成する。行路の最終列車として設定可能な列車は、基本的には車両基地に隣接する駅または駅構内に翌日まで留置できる駅を終着駅とする列車である。そうでない場合は、車両基地へ車両を格納するために回送を走らせることになるため望ましくない。
終端リンクは、編成が元の資源運用計画で予定されていた地点で行路を終了するように制約をかけるためのリンクである。終端リンクは、一つの終端ノードから全ての編成ノードに向かってリンクを作成し、行路終了地点の制約を基に重みを設定する。つまり、終端ノードが保持している元の資源運用計画上の終着駅の値と、編成ノードが保持している当該資源運用計画上の終端駅の値を比較し、同じであれば、該当する終端ノードと該当する編成ノードとを結ぶ終端リンクには、該当する終端ノードから他の編成ノードへのびる終端リンクより選択されやすくなるよう、重み値を設定する。
予備用編成ノードは予備編成を表すノードであり、一つの予備編成につき一つの予備用編成ノードを設定する。留置されている車両基地に隣接する駅と、車両基地から予備編成を引き出すことができる時間帯の開始時刻と終了時刻を属性として持つ。
予備用列車ノードは予備運用を表すノードであり、予備編成の数だけ設定する。車両基地に隣接する駅と、車両基地へ車両を格納することができる時間帯の開始時刻と終了時刻を属性として持つ。
予備用終端ノードは予備編成の行路の終了を表すノードである。予備編成を一意に識別する編成名称または編成IDと、車両基地に隣接する駅を属性として持つ。
接続リンクは、予備用編成ノードと予備用列車ノード、予備用列車ノードと予備用終端ノード、予備用編成ノードと列車ノード、列車ノードと予備用列車ノードを結ぶリンクであり、以下のように作成する。
予備用編成ノードから予備用列車ノードへの接続リンクは、車両基地の隣接駅として保持しているそれぞれの属性値が同じであれば、予備用編成ノードから予備用列車ノードへ向かってリンクを作成する。この接続リンクには他の接続リンクよりも、解の選択時に選ばれやすい重みを設定する。
予備用列車ノードから予備用終端ノードへの接続リンクは、車両基地の隣接駅として保持しているそれぞれの属性値が同じであれば、予備用列車ノードから予備用終端ノードへ向かってリンクを作成する。予備用終端ノードへの接続リンクは、この予備用列車ノードからのリンクのみとする。
列車ノードと予備用編成ノード間の接続リンクは、列車ノードの属性である始発駅と始発時刻と終着駅と終着時刻と、予備用編成ノードの属性である車両基地に隣接する駅と、車両基地から予備編成を引き出すことができる時間帯の開始時刻と終了時刻を基に、時刻と場所の接続が成り立つように、予備用編成ノードから列車ノードへ向かってリンクを作成する。
列車ノードと予備用列車ノードの接続リンクは、列車ノードの終着駅と予備用列車ノードの属性である車両基地と隣接する駅が等しく、かつ列車ノードの終着時刻が、予備用列車ノードの属性である車両格納可能時間帯におさまっている場合に、列車ノードから予備用列車ノードへ向かってリンクを作成する。
終端リンクは、予備用終端ノードと予備用編成ノードそれぞれが車両基地の隣接駅として保持している値が同じであれば、予備用終端ノードから予備用編成ノードへ向かってリンクを作成する。予備用終端ノードから予備用編成ノードへのみ作成し、予備用終端ノードから他の編成ノードへの終端リンクは作成しない。
<運用パターン>
本実施形態では、利用者が資源運用計画に加えた変更を基に運用パターンを作成し、上述のネットワークモデルに反映する。運用パターンとは、資源の運用方法の常套手段を表すものであり、利用者が資源運用計画に対して繰り返し行う部分的な変更を記録したものである。本発明では、運用パターンを以下の2種類に分類して扱う。
一つの編成に対して連続して割当る列車の組を指定するパターンである。例えば、列車4の後に列車7を割り当て、次に列車9を割り当てる、という指定がされた場合は、列車4と列車7と列車9は全て指定された順序で同じ編成に割り当て、これらの列車の間には他の列車は割り当てないことを意味する。
2つの編成の間で、それぞれに割当られている列車を交換するパターンである。例えば、列車5は編成Bに割当られており、列車3は編成Cに割当られており、列車5と列車3を交換するという指定がされた場合、列車5は編成Cに割当、列車3は編成Bに割当ることを意味する。
(1)運用パターン「つなぎ」の場合
対象列車を表すノードを抽出し、それぞれのノード間を結ぶリンクの重みに選択されやすい値を設定する。例えば、ネットワークのリンクの重みができるだけ小さいパスを探索することで資源運用計画を作成する場合、対象列車のノード間の重みに現在設定されている値より小さい値を設定する。
(2)運用パターン「交換」の場合
対象列車となる2つの列車について、対象列車を表すノードと、対象列車と同一編成に割当られている列車のうち対象列車の前後に割当られている列車を表すノードを抽出する(それぞれ、前運用列車ノード、後運用列車ノードと呼ぶ)。それぞれの対象列車について、もう一方の対象列車の前運用列車ノードと当該対象列車の列車ノードの間のリンクの重み、およびもう一方の対象列車の後運用列車ノードと当該対象列車の列車ノードのリンクの重みを、現在設定されている値より当該リンクがより選択されやすい値に設定する。ここで、対象列車が行路の最初である場合は、前運用列車ノードの代わりに、対象列車ノードと接続リンクを持つ編成ノードを抽出し、対象列車が行路の最後である場合は、後運用列車ノードの代わりに、対象列車ノードと接続リンクを持つ終端ノードを抽出して同様の処理を行う。
ステップS607において、S605で選択したノードから、そのノードの属性の一つである「元計画における終着駅」と同じ終着駅を持つ編成ノードへ向かう終端リンクを作成する(終端リンク1)。更に、残りの編成ノードへ向かってS605で選択したノードから終端リンクを作成する(終端リンク2)。
ステップS608において、S607で作成した終端リンク1と終端リンク2に対して重みを設定する。ここで、終端リンク1に対しては、資源運用計画の作成において終端リンク2よりも選択されやすいように重み値を設定する。
ステップS607において、属性として保持している「車両基地に隣接する駅」がS605で選択したノードと同じである予備用編成ノードを抽出し、抽出したノードに向かってS605で選択したノードから終端リンクを作成する。
ステップS608において、S607で作成した終端リンクに対して重みを設定する。ここで終端リンクには、当該予備用終端ノードに接続している他のリンクより資源運用計画の作成で選ばれやすいように、重み値を設定する。
<定数>
保守作業を実施可能な時間帯の開始時刻が列車の終着時刻よりも早く、かつ保守作業を実施可能車両基地の隣接駅が列車ノードの終着駅と等しい場合に、列車ノードから保守作業ノードへ向かう接続リンクを作成する。
その後、保守作業ノードへ向かう接続リンクを持つ列車ノードのうち、終着時刻が最も早い列車と最も遅い列車を選択し、それぞれの終着時刻に保守作業所要時間を加えた値をそれぞれ保守作業終了時刻の最短時刻および最長時刻の基準とする。列車ノードの始発時刻が、この最短時刻と最長時刻の間にあり、かつ保守作業を実施可能な車両基地の隣接駅が列車ノードの始発駅と等しい場合、保守作業ノードから列車ノードへ向かう接続リンクを作成する。
Claims (12)
- 輸送サービスの運行スケジュール情報を計算機が読み込むステップと、
前記計算機が、前記運行スケジュール情報に基いて、当該運行スケジュールに含まれる複数の輸送行程各々について、当該輸送行程の始発場所、始発時間、終着場所、および終着時間を少なくとも属性として有するノードを作成し、各ノードの属性に基いて同じ輸送資源を用いて連続した運行が可能な運送行程を表すノード間を接続してパスを作成して、輸送行程のネットワークモデルを作成するステップと、
前記計算機が、予備資源に関する情報を取得して、当該予備資源の保管場所および利用可能時間帯を少なくとも属性として有する予備資源ノードを作成して前記ネットワークモデルに追加し、当該予備資源ノードの属性と前記ネットワークモデルを構成する他のノードの属性とに基いて、当該予備資源を用いて運行が可能な運行行程を表すノードと当該予備資源ノードとを接続したパスを前記ネットワークモデルに追加するステップと、
前記計算機が、前記ネットワークモデルを構成する前記予備資源ノード以外の各ノードに、一つ運送資源若しくは予備資源が割り当てられるような、複数のパスから構成されるパスの組み合わせを、前記ネットワークモデルから抽出するステップと、
前記計算機が、抽出された前記組み合わせについて、当該組み合わせを構成する複数のパスの各々に輸送資源または予備資源を割り当てることによって、輸送資源および予備資源の運用計画を作成して当該運用計画を出力するステップを有することを特徴とする、資源運用計画作成方法。 - 前記予備資源とは、前記運送資源を所有して前記輸送サービスを提供する輸送サービス会社以外の他の会社が所有する運送資源であり、
前記予備資源が前記保管場所の外に移動した場合には同日中に当該保管場所に戻るように、前記予備資源ノードは他のノードと接続されることを特徴とする請求項1記載の資源運用計画作成方法。 - 前記ネットワークモデルには更に、前記運送資源の保守作業について、当該保守作業の作業時間と作業場所と少なくとも属性として有する保守ノードを有しており、
前記保守ノードは、当該保守ノードの属性に基いて、運送資源の保守が可能な運送行程を表すノードと接続されていることを特徴とする請求項1に記載の資源運用計画作成支援方法。 - 更に、前記運行スケジュール情報に対する変更を前記計算機が受け付けるステップと、
受け付けた変更に基いて、前記計算機がネットワークモデルを変更するステップとを更に有することを特徴とする請求項1記載の資源運用計画作成方法。 - 更に、受け付けた前記運行スケジュール情報に対する変更の内容を、前記計算機が運用パターンとして記憶装置に保存するステップと、
ネットワークモデルを作成する際に前記計算機は前記記憶装置に保存されている運用パターンを読み込んで、当該運用パターンを当該ネットワークモデルに反映するステップとを有することを特徴とする請求項4記載の資源運用計画作成方法。 - 前記運行スケジュールは列車の運行スケジュールであって、前記運送資源は車両であることを特徴とする請求項1記載の資源運用計画作成方法。
- 輸送資源の運用計画を作成する装置であって、
輸送サービスの運行スケジュール情報を計算機が読み込む入力部と、
前記運行スケジュール情報に基いて、当該運行スケジュールに含まれる複数の輸送行程各々について、当該輸送行程の始発場所、始発時間、終着場所、および終着時間を少なくとも属性として有するノードを作成し、各ノードの属性に基いて同じ輸送資源を用いて連続した運行が可能な運送行程を表すノード間を接続してパスを作成して、輸送行程のネットワークモデルを作成するネットワークモデル作成部と、
前記ネットワークモデルに基いて前記運用計画を作成する計画作成部とを有し、
前記ネットワークモデル作成部は、予備資源に関する情報を取得して、当該予備資源の保管場所および利用可能時間帯を少なくとも属性として有する予備資源ノードを作成して前記ネットワークモデルに追加し、当該予備資源ノードの属性と前記ネットワークモデルを構成する他のノードの属性とに基いて、当該予備資源を用いて運行が可能な運行行程を表すノードと当該予備資源ノードとを接続したパスを前記ネットワークモデルに追加し、
前記計画作成部は、前記ネットワークモデルを構成する前記予備資源ノード以外の各ノードに、一つ運送資源若しくは予備資源が割り当てられるような、複数のパスから構成されるパスの組み合わせを、前記ネットワークモデルから抽出し、
抽出された前記組み合わせについて、当該組み合わせを構成する複数のパスの各々に輸送資源または予備資源を割り当てることによって、輸送資源および予備資源の運用計画を作成して当該運用計画を出力することを特徴とする、資源運用計画作成装置。 - 前記予備資源とは、前記運送資源を所有して前記輸送サービスを提供する輸送サービス会社以外の他の会社が所有する運送資源であり、
前記ネットワークモデル作成部は、前記予備資源が前記保管場所の外に移動した場合には同日中に当該保管場所に戻るように、前記予備資源ノードと他のノードとを接続することを特徴とする請求項7記載の資源運用計画作成装置。 - 前記ネットワークモデル作成部は、前記運送資源の保守作業について、当該保守作業の作業時間と作業場所と少なくとも属性として有する保守ノードを、前記ネットワークモデルに更に追加し、当該保守ノードの属性に基いて、運送資源の保守が可能な運送行程を表すノードと当該保守ノードとを接続するパスを作成することを特徴とする請求項7に記載の資源運用計画作成装置。
- 前記入力部は更に、前記運行スケジュール情報に対する変更を前記計算機が受け付け、
前記ネットワークモデル作成部は、受け付けた変更に基いて、前記ネットワークモデルを変更することを特徴とする請求項7記載の資源運用計画作成装置。 - 更に、前記入力部が受け付けた前記運行スケジュール情報に対する変更の内容を、運用パターンとして保存する操作履歴記憶部を有し、
前記ネットワークモデル作成部は、ネットワークモデルを作成する際に前記操作履歴記憶部に保存されている運用パターンを当該ネットワークモデルに反映することを特徴とする請求項10記載の資源運用計画作成装置。 - 前記運行スケジュールは列車の運行スケジュールであって、前記運送資源は車両であることを特徴とする請求項7記載の資源運用計画作成装置。
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