Construction plan planning device

Abstract

This construction plan planning device for planning a construction plan utilizing an electric construction machine comprises a calculation unit. The calculation unit creates a plurality of construction scenarios having different movement routes when the electric construction machine performs construction, calculates a plurality of simulation results including an operation time for each operation of the electric construction machine on the basis of the plurality of construction scenarios, and outputs the simulation results to a user terminal. As a result, it is possible to provide a construction plan planning device capable of planning a construction plan with high work efficiency utilizing an electric construction machine.

Description

Construction planning device

[0001] The present invention relates to a technique for formulating a construction plan utilizing an electric construction machine.

[0002] Patent Document 1, for example, is a document disclosing prior art for electric construction machinery. Patent Document 1 discloses an electric construction machinery including a power storage device, an electric motor driven by power from the power storage device, a hydraulic pump driven by the electric motor, a traveling hydraulic motor and a working hydraulic actuator driven by pressure oil discharged from the hydraulic pump, a controller, and a display device, and further including a movement information acquisition device that acquires movement information of the construction machinery, wherein the controller calculates and stores the amount of power consumed by the electric motor from the time the construction machinery departs from a charging facility to the time it arrives at a work site based on the movement information of the construction machinery acquired by the movement information acquisition device, calculates the amount of power that can be consumed at the work site by subtracting the amount of power consumed from the amount of power stored in the power storage device, calculates the amount of power that can be consumed at the work site based on the amount of power that can be consumed at the work site, and displays the amount of time that can be operated at the work site on the display device (see claim 1).

[0003] International Publication No. WO2020 / 065996

[0004] The electric construction machine described in Patent Document 1 can travel from a work site to a charging facility and can suppress a decrease in work efficiency. However, Patent Document 1 does not mention a method for formulating or improving a construction plan, such as the route along which the electric construction machine should move and perform work within the construction site, and unless an appropriate construction plan is formulated, there is a risk that the frequency of charging the electric construction machine will increase, resulting in a decrease in work efficiency.

[0005] The present invention has been made in consideration of the above-mentioned problems, and its purpose is to provide a construction planning device that is capable of creating construction plans with high work efficiency using electric construction machinery.

[0006] In order to achieve the above object, the present invention provides a construction plan planning device that formulates construction plans using electric construction machinery, the device comprising a calculation unit, wherein the calculation unit defines a construction scenario as information including construction layout information including information on the power supply equipment installation area that supplies power to the electric construction machinery and information on the work area of ​​the electric construction machinery, machinery and equipment information including the battery capacity of the electric construction machinery and power consumption information indicating the power consumption for each operation of the electric construction machinery, construction rules including a charging method for the electric construction machinery, and construction process information indicating the movement route of the electric construction machinery when performing construction work, creates a plurality of construction scenarios with different movement routes, calculates a plurality of simulation results including the operation time for each operation of the electric construction machinery based on the plurality of construction scenarios, and outputs the results to a user terminal.

[0007] According to the present invention, it is possible to formulate a construction plan that utilizes electric construction machinery and has high work efficiency.

[0008] 1 is a functional block diagram of a construction plan planning device in a first embodiment. FIG. 1 is a flowchart showing processing executed by a calculation unit of the construction plan planning device. FIG. 2 is a diagram showing an example of construction layout information. FIG. 3 is a diagram showing pre-construction layout information with a layout name added. FIG. 4 is a diagram showing pre-construction layout information in a data table format. FIG. 5 is a diagram showing an example of construction process information. FIG. 6 is a flowchart showing details of processing for creating a plurality of pieces of construction process information. FIG. 7 is a diagram showing an example of construction process generation rules. FIG. 8 is a diagram showing an example of construction process information generated in accordance with one record of the construction process generation rules. FIG. 9 is a diagram showing an example of basic specification information included in mechanical equipment information. FIG. 10 is a diagram showing an example of power consumption information included in mechanical equipment information. FIG. 11 is a diagram showing an example of a construction scenario definition screen. FIG. 12 is a flowchart showing details of a construction simulation. FIG. 13 is a diagram showing an example of time event information. FIG. 14 is a diagram showing an example of charging rules for an electric shovel. FIG. 15 is a diagram showing an example of the behavior of an electric shovel in an excavation area. FIG. 16 is a diagram showing an example of the behavior of an electric shovel when excavating outside a chargeable area. FIG. 17 is a diagram showing an example of a simulation result. FIG. 18 is a diagram showing an example of a calculation process for the availability rate and work efficiency for each unit. FIG. 19 is a diagram showing a result of comparing the work efficiency of two construction scenarios. FIG. 20 is a functional block diagram of a construction plan planning device in a second embodiment. FIG. 21 is a flowchart showing processing by a power consumption information update unit. FIG. 10 is a diagram illustrating an example of a power consumption history.

[0009] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In each drawing, members or elements having the same action or function are designated by the same reference numerals, and duplicated explanations will be omitted as appropriate.

[0010] 1 is a functional block diagram of a construction planning system 1 according to a first embodiment of the present invention. The construction planning system 1 is connected via a network 102 to a user terminal 103 used by a user and to a database 104 in which various data is stored.

[0011] The user terminal 103 is an information processing device such as a PC (Personal Computer). A user issues a processing execution instruction to the construction plan planning apparatus 1 through the user terminal 103. The user terminal 103 also has a function of displaying information output by the construction plan planning apparatus 1 to the user.

[0012] The database 104 is, for example, a map system, a machine operation information system, an ERP (Enterprise Resources Planning) system, or a database or storage device that accumulates data equivalent to these.

[0013] The network 102 communicatively connects the user terminal 103, the database 104, and the construction plan planning device 1. The network 102 is, for example, any of a local area network (LAN), a wide area network (WAN), a virtual private network (VPN), and a communication network that uses a general public line such as the Internet in part or in whole.

[0014] The construction plan planning device 1 is an information processing device such as a PC or a server computer, and includes a storage unit 11, a calculation unit 12, an input unit 13, and an output unit 14. The calculation unit 12 has a construction plan creation unit 121 and a construction simulator unit 122. The input unit 13 inputs instructions to the calculation unit 12. The output unit 14 outputs the calculation results of the calculation unit 12. The information processing device serving as the construction plan planning device 1 includes a calculation unit such as a CPU, storage devices such as a ROM, RAM, and HDD, an input / output interface for inputting and outputting signals to and from external devices, and realizes the functions of each unit by executing a program stored in the ROM, etc.

[0015] The storage unit 11 stores construction layout information 110, mechanical equipment information 111, construction process information 112, construction rules 113, construction scenarios 114, simulation results 115, construction plans 116, and power consumption history 117. Each piece of information stored in the storage unit 11 will be described later.

[0016] Next, the flow of processing executed by the calculation unit 12 of the construction plan planning device 1 in this embodiment will be described with reference to the flowchart of FIG.

[0017] The following series of processes is premised on the fact that a predetermined number of pieces of construction layout information 110, machinery and equipment information 111, construction process information 112, and construction rules 113 acquired from the database 104 are stored in the storage unit 11, and is started, for example, in response to a start command from the user to the user terminal 103. Note that steps S101 to S105 and S107 to S109 are executed by the construction plan creation unit 121, and step S106 is executed by the construction simulator unit 122.

[0018] First, in step S101, construction layout information 110 is acquired. An example of the construction layout information 110 is shown in FIG. 3. The construction layout information 110 includes a three-dimensional shape of the terrain at the construction site before construction (pre-construction layout information 110a), a three-dimensional shape of the terrain after construction (post-construction layout information 110b), and the layout and names (layout name) of the entrance / exit, excavation area, dump truck parking area, etc. of the construction site. FIG. 4 is a diagram showing the pre-construction layout information 110a in FIG. 3 with the layout name added. For example, the layout name "Entrance / Exit" represents the entrance / exit of the construction site, "[1] A" and "[1] B" represent the power supply equipment installation area 1101, "[2]" represents the dump truck parking area 1102, "[3]" represents the excavator loading area 1103, and the shaded portion of "[4]" represents the excavation area 1104. The power supply equipment installation area 1101 is an area where a power supply equipment 23 (shown in FIG. 6) that supplies power to an electric construction machine, such as an electric shovel 21 (shown in FIG. 6), is installed. The dump truck side area 1102 is an area where a dump truck 22 (shown in FIG. 6) is placed when receiving earth and sand from the electric shovel 21. The shovel loading area 1103 is an area where the electric shovel 21 is placed when loading earth and sand into the dump truck 22. The excavation area 1104 is an example of an area (work area) where an electric construction machine performs work, but the work area is not limited to an excavation area. The construction layout information 110 may also be stored in the form of a data table. FIG. 5 is a diagram showing the pre-construction layout information 110a of FIG. 4 in the form of a data table. The pre-construction layout information 110a has data columns such as "x", "y", "z", "layout name", and "excavation area". "x", "y", and "z" are the coordinate values ​​of the three-dimensional shape of the terrain at the construction site, "layout name" is the layout name at each coordinate, and "excavation flag" is flag information indicating whether or not excavation is required at the location.

[0019] 2 , following step S101, a plurality of pieces of construction process information 112 are generated (step S102). An example of the construction process information 112 is shown in Fig. 6. The construction process information 112 is information that indicates the route along which the electric shovel 21 will move in the excavation area 1104 while performing excavation work.

[0020] 7 is a flowchart showing the details of the process (step S102 in FIG. 2) for creating multiple pieces of construction process information 112. First, the pre-construction layout information 110a (shown in FIG. 5) is read (step S201), and records with a value of 1 in the "excavation flag" column are extracted (step S202).

[0021] Following step S202, one record of the construction process generation rule 113a included in the construction rule 113 is read (step S203). An example of the construction process generation rule 113a is shown in Figure 8. The construction process generation rule 113a has data strings such as "generation rule name," "excavation direction," and "turnback direction," and a method for creating a movement route is registered for each generation rule name.

[0022] Returning to Fig. 7 , following step S203, construction process information 112 is generated based on one record ("excavation direction" and "turn back direction") read in step S202 (step S204). For example, an example of construction process information 112 generated based on "generation rule (1)" in Fig. 8 is shown in Fig. 9. The construction process information 112 in Fig. 9 represents a construction process in which the electric shovel 21 performs excavation work while moving vertically through the excavation area 1104, and turns back to the right when it reaches the boundary line of the excavation area 1104, repeating this operation.

[0023] Returning to FIG. 7, following step S204, it is determined whether all records of the construction process generation rule 113a have been read (step S205). If the determination result is No, the process returns to step S203; if the determination result is Yes, the flow is terminated.

[0024] Returning to FIG. 2 , following step S102, the machine equipment information 111 is read (step S103). The machine equipment information 111 is information about the machine equipment to be installed at the construction site, such as the electric shovel 21, the dump truck 22, and the power supply equipment 23. FIG. 10 shows an example of basic specification information 111a included in the machine equipment information 111. The basic specification information 111a includes data strings such as the "unit number" of the machine equipment, the "type" of the machine equipment, the "bucket capacity" when the type of the machine equipment is an electric shovel 21, the "load capacity" when the type of the machine equipment is a dump truck, and the "battery capacity," "charging power," "output power," and "charging cable length" when the type of the machine equipment is a power supply equipment. Note that the data strings used differ depending on the type of machine equipment. For example, if the type is a power supply equipment, the data strings of "battery capacity," "charging power," "output power," and "charging cable length" are used; if the type is a dump truck, the data strings of "traveling speed" and "load capacity" are used; and if the type is an electric shovel, the data strings of "bucket capacity," "traveling speed," "battery capacity," and "charging power" are used. 11 shows an example of power consumption information 111b included in the mechanical equipment information 111. The power consumption information 111b registers the power consumption for each operation (excavation, loading, traveling, standby, charging stop, etc.) of each electric excavator 21 (shown in FIG. 9). Note that excavation refers to the operation of digging up earth and sand from an excavation area 1104, loading refers to the operation of loading earth and sand into a dump truck 22 (shown in FIG. 9) parked next to the excavator loading area 1103, standby refers to idling, and charging stop refers to the operation of charging at the power supply facility 23 (shown in FIG. 6).

[0025] Returning to FIG. 2 , following step S103, multiple construction scenarios 114 for the construction simulation are defined (step S104). FIG. 12 shows an example of a construction scenario definition screen 1140. In the construction process setting information 114a, the construction process to be used for each construction scenario name is set. The construction process can be selected from the generation rule name registered in the construction process generation rule 113a or from "manual registration." Selecting "manual registration" means that the construction process information 112 is used as the construction process. In the construction layout configuration information 114b, layout names corresponding to areas such as the power supply equipment installation area 1101, the dump truck parking area 1102, the excavator loading area 1103, and the excavation area 1104, and the machine numbers to be used are set. The layout name can be selected from the layout names registered in the pre-construction layout information 110a, and the machine numbers can be selected from the machine numbers registered in the basic specification information 111a. In the power supply relationship information 114c, the correspondence between the power supply source machine number and the power supply destination machine number is set. The power supply source unit number can be selected from the unit number of the power supply equipment type in the basic specification information 111a, and the power supply destination unit number can be selected from the unit number of the electric shovel type in the basic specification information 111a. In the construction scenario definition screen 1140 of this embodiment, this means that the electric shovel 21 with power supply destination unit number "04" operates in excavation area [4], and when charging, it uses the charging cable of power supply source unit number "01" installed in layout name "[1]A". The positional relationship between these units is shown in Figure 4. The chargeable area 1100 indicates the range that the charging cable can reach, and inside the chargeable area 1100, excavation can be performed while charging, whereas outside the chargeable area 1100, excavation will be performed while consuming the remaining battery capacity.

[0026] Returning to Figure 12, when the name and coordinates (x, y) of the soil dump site where the dump truck 22 will load are set in the soil dump site information 114d, the distance from the dump truck parking area 1102 to the soil dump site is calculated and displayed by the construction planning device 1.

[0027] Returning to FIG. 2, following step S104, one record of the construction process setting information 114a is read (step S105), and a construction simulation is executed using the corresponding construction process (step S106).

[0028] FIG. 13 is a flowchart showing the details of the construction simulation (step S106).

[0029] First, the volume Va of the terrain before construction in the excavation area 1104 is calculated from the volume of the pre-construction layout information 110a, and the volume Vb of the terrain after construction is calculated from the post-construction layout information 110b. The volume Vb is then subtracted from the volume Va to calculate the volume V of earth and sand to be transported (step S301).

[0030] Following step S301, the total number of dump trucks D for transporting earth and sand is calculated using equation (1) (step S302). Here, the dump truck load capacity M is calculated by extracting the load capacity of the truck corresponding to the dump truck parking area in the construction layout configuration information 114b from the basic specification information 111a. Note that "Roundup" in equation (1) is a function that rounds up to the nearest integer.

[0031] D=Roundup (V / M)...(1)

[0032] Following step S302, the time event information 113b and the charging rule 113c included in the construction rule 113 are read (step S303). FIG. 14 shows an example of the time event information 113b. The time event information 113b has a data string of an event name and a condition under which the event occurs. For example, a start-of-work event occurs when the time in the construction simulation is 8:30. FIG. 15 shows an example of a charging rule 113c for the electric excavator 21. The charging rule 113c similarly has a data string of an event name and a condition under which the event occurs. For example, when the charging rate falls below 20%, a charging rate lower limit event occurs. The charging rate can be calculated using the following formula (2).

[0033] Charging rate = remaining battery capacity / battery capacity (2)

[0034] Returning to FIG. 13 , following step S303, the simulation time is initialized to the work start time (step S304), behavior processing for each excavator is performed (steps S305 and S306), and the simulation time is advanced by a unit time (0.5 h in this embodiment) (step S307). FIG. 16 shows an example of the behavior of the electric excavator 21 in the excavation area 1104. The electric excavator 21 starts traveling based on the occurrence of an event such as the start of work or the end of a break, and starts excavation when it arrives at a destination on the route described in the construction process. After completing a predetermined amount of excavation, it travels to the next destination on the route. Thereafter, similar operations are repeated. This behavior and the calculation of the remaining battery capacity and charging rate progress over time in the simulation. FIG. 17 shows an example of the behavior of the electric excavator 21 when excavating outside the chargeable area 1100. When the electric excavator 21 is excavating outside the chargeable area 1100, based on the occurrence of an event such as the start of a break or the lower limit of the charging rate, it travels to a location within reach of the charging cable (within the chargeable area 1100) and starts charging. The robot starts traveling based on the battery charge limit or the occurrence of an event such as the end of a break, and resumes excavation work when it arrives at its original location.

[0035] Returning to Fig. 13, the processes of steps S305 to S307 are repeated until the number of earth and sand transports reaches D, and then the simulation result 115 is output (steps S308 and S309). An example of the simulation result 115 is shown in Fig. 18. The simulation result 115 has data strings such as "time," "unit number," "elapsed time," "job name," "excavation time," "travel time," "cumulative excavation time," "cumulative loading time," "cumulative travel time," and "charging rate." Here, the elapsed time is the time [h] that has elapsed since the start of the simulation, and the cumulative excavation time and cumulative loading time refer to the total values ​​of the operation times from the start of the simulation to the record in question for each excavation and loading operation.

[0036] 2, after step S106, the average value of the availability rates for each machine (average availability rate) is calculated as the work efficiency (step S107). The availability rate for each machine can be calculated by the following formula (3) using the cumulative excavation time and cumulative loading time of the record with the longest “elapsed time” column in the simulation result 115.

[0037] Operating rate = (cumulative excavation time + cumulative loading time) / elapsed time (3)

[0038] 19 shows an example of the process for calculating the availability rate and work efficiency for each machine. In FIG. 19, the availability rate of electric excavator 21, machine number "04", is (cumulative excavation time "5.5" + cumulative loading time "0") / elapsed time "9", = 61%. Furthermore, the availability rate of electric excavator 21, machine number "03", is (cumulative excavation time "0" + cumulative loading time "5.7") / elapsed time "9", = 63%. As a result, the work efficiency is 62%, which is the average of the availability rate of machine number "04", which is "61%," and the availability rate of machine number "03", which is "63%".

[0039] 2, after step S107, it is determined whether or not the work efficiency has been calculated for all of the construction scenarios 114 (step S108). If the determination result in step S107 is No, the process returns to step S105, and if the determination result is Yes, the process proceeds to step S109.

[0040] In step S109, the construction scenario 114 with the highest work efficiency is identified, and the simulation results are registered as the construction plan 116. FIG. 20 shows the results of comparing the work efficiencies of construction scenarios (1) and (2). In construction scenario (1), excavation is performed while frequently moving between the chargeable area 1100 included in the excavation area 1104 and the excavation area 1104a outside the chargeable area 1100. Therefore, the battery charging rate does not reach a lower limit during excavation in the excavation area 1104a, and excavation in the excavation area 1104a is not interrupted, resulting in a high work efficiency of 61%. On the other hand, in construction scenario (2), excavation is performed continuously for a long period of time in the excavation area 1104a outside the chargeable area 1100. Therefore, the battery charging rate reaches a lower limit during excavation in the excavation area 1104a, and excavation must be interrupted and charging performed, resulting in a low work efficiency of 59%. From the above results, construction scenario (1), with the highest work efficiency, is registered as the construction plan 116. 21 shows an example of the construction plan 116. The construction plan 116 includes a work process plan written by unit and by time, and a construction scenario (construction layout information 110, power supply related information 114c, and earth and sand dumping site information 114d) set on the construction scenario definition screen 1140.

[0041] (Summary) In the first embodiment, a construction plan planning device 1 that formulates a construction plan 116 utilizing an electric shovel 21 (electric construction machine) includes a calculation unit 12, and the calculation unit 12 calculates construction layout information 110 including information on a power supply equipment installation area 1101 that supplies power to the electric shovel 21 and information on an excavation area 1104 (work area) of the electric shovel 21, machine equipment information 111 including power consumption information 111b that indicates the battery capacity of the electric shovel 21 and the power consumption for each operation of the electric shovel 21, construction rules 113 including a charging method for the electric shovel 21, and Information including construction process information 112 indicating the movement path when the electric shovel 21 performs construction is defined as a construction scenario 114, multiple construction scenarios 114 with different movement paths are created, multiple simulation results 115 including the operation time for each operation of the electric shovel 21 are calculated based on the multiple construction scenarios 114, the work efficiency of each of the multiple construction scenarios 114 is calculated based on the operation time for each operation of the electric shovel 21 included in the multiple simulation results 115, and the construction scenario 114 with the highest work efficiency among the multiple construction scenarios 114 is output as a construction plan 116.

[0042] According to the first embodiment configured as described above, a simulation is performed using a plurality of construction scenarios 114 that involve different movement paths when the electric shovel 21 performs construction work, and the construction scenario 114 that achieves the highest work efficiency is output as the construction plan 116. This makes it possible to create a construction plan 116 that utilizes the electric shovel 21 and has high work efficiency.

[0043] Furthermore, the construction plan creation unit 121 in the first embodiment calculates the average operation rate of the multiple electric excavators 21 as the work efficiency. This makes it possible to create a construction plan that operates the multiple electric excavators 21 evenly. Note that the work efficiency is not limited to the average operation rate of the multiple electric excavators 21, and an index value that decreases depending on the number of dump trucks 22 transported or the number of days required for the construction plan may be calculated as the work efficiency.

[0044] The second embodiment of the present invention will be described, focusing mainly on the differences from the first embodiment.

[0045] 22 is a functional block diagram of the construction plan planning device 1 in the second embodiment. The calculation unit 12 of the construction plan planning device 1 in the present embodiment further includes a power consumption information update unit 123. The power consumption information update unit 123 updates the power consumption information 111b included in the mechanical equipment information 111 when a discrepancy occurs between the charging rate (predicted charging rate value) of the electric excavator 21 in the simulation result 115 of the construction plan 116 and the charging rate (actual charging rate value) of the electric excavator 21 operated in accordance with the construction plan 116.

[0046] Fig. 23 is a flowchart showing the processing of the power consumption information update unit 123. The power consumption information update unit 123 first reads the simulation result 115 of the construction plan 116 and the power consumption history 117 (step S401). Fig. 24 shows an example of the power consumption history 117. The power consumption history 117 has data strings such as time, unit number, actual charging rate value, actual power consumption value, etc.

[0047] Returning to FIG. 23, following step S401, the deviation point (shown in formula (4)) between the charging rate (actual charging rate value) of the power consumption history 117 and the charging rate (predicted charging rate value) of the simulation result 115 is calculated for each unit, and the power consumption for each operation of the unit where the deviation point is equal to or greater than a predetermined threshold value Q is estimated (steps S402 to S404).

[0048] Deviation point = | predicted charging rate value - actual charging rate value | ... (4)

[0049] In step S403, when the target machine number is "i", the machine operation is "j", and the time point in the time series is "t", the actual power consumption value "C ｉ，ｔ ” is the objective variable, and the operation time “x ｉ，ｔ，ｊ Next, a multiple regression model is created using the explanatory variable "x ｉ，ｔ，ｊ The partial regression coefficient "R ｉ，ｊ " is the estimated power consumption value. ｉ，ｔ " and "x ｉ，ｔ，ｊ The power consumption estimate may be obtained using a learning model that has been trained to input " and output at least the power consumption for each operation.

[0050] Following steps S402 to S404, the power consumption information 111b included in the mechanical equipment information 111 (shown in FIG. 22) is updated with the estimated power consumption value for each operation of the target machine (step S405). After this, by re-executing the construction simulation (shown in FIG. 2), a construction plan 116 that is in line with the actual situation can be formulated.

[0051] (Summary) In the second embodiment, the calculation unit 12 sets the charging rate of the electric shovel 21 (electric construction machine) in the simulation results of the construction scenario 114 output as the construction plan 116 as the predicted charging rate value, sets the charging rate of the electric shovel 21 operated in accordance with the construction plan 116 as the actual charging rate value, and when the difference between the predicted charging rate value and the actual charging rate value is equal to or greater than a predetermined threshold, calculates an estimated power consumption value for each operation of the electric shovel 21 based on the actual power consumption value of the electric shovel 21, and updates the power consumption information 111b with the estimated power consumption value.

[0052] In the second embodiment configured as described above, as in the first embodiment, it is possible to formulate a construction plan 116 with high work efficiency that utilizes the electric shovel 21. Furthermore, by updating the power consumption information 111b based on the actual power consumption value of the electric shovel 21, the power consumption information 111b becomes more in line with the actual situation, and it is therefore possible to improve the accuracy of the construction simulation.

[0053] Furthermore, the calculation unit 12 in the second embodiment creates a multiple regression model in which the actual power consumption value is used as a response variable and the operation time for each operation of the electric shovel 21 is used as an explanatory variable, performs multiple regression analysis on the multiple regression model, and sets the partial regression coefficients of the explanatory variables obtained by the multiple regression analysis as the estimated power consumption values ​​for each operation of the electric shovel 21. This makes it possible to improve the accuracy of the estimated power consumption values.

[0054] Furthermore, the calculation unit 12 in the second embodiment has a learning model that has been trained to output the power consumption for each operation using the power consumption of the electric shovel 21 and the operation time for each operation as input, and the actual power consumption value and the operation time for each operation of the electric shovel 21 (electric construction machine) in the simulation results are input to the learning model, and the power consumption for each operation of the electric shovel 21 output from the learning model is used as the power consumption estimate value. This makes it possible to improve the accuracy of the power consumption estimate value.

[0055] Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments and includes various modifications. For example, the above-described embodiments have been described in detail to clearly explain the present invention, and the present invention is not necessarily limited to those including all of the described configurations. Furthermore, it is possible to add part of the configuration of one embodiment to the configuration of another embodiment, or to delete part of the configuration of one embodiment or replace it with part of another embodiment.

[0056] 1...Construction plan drafting device, 11...Memory unit, 12...Calculation unit, 13...Input unit, 14...Output unit, 21...Electric shovel (electric construction machinery), 22...Dump truck, 23...Power supply equipment, 102...Network, 103...User terminal, 104...Database, 110...Construction layout information, 110a...Pre-construction layout information, 110b...Post-construction layout information, 111...Machinery equipment information, 111a...Basic specification information, 111b...Power consumption information, 112...Construction process information, 113...Construction rules, 113a...Construction process generation rules, 113b...Time event information, 113c ...Charging rules, 114...construction scenario, 114a...construction process setting information, 114b...construction layout configuration information, 114c...power supply related information, 114d...soil dump site information, 115...simulation results, 116...construction plan, 117...power consumption history, 121...construction plan creation section, 122...construction simulator section, 123...power consumption information update section, 1100...charging area, 1101...power supply equipment installation area, 1102...dump truck parking area, 1103...shovel loading area, 1104, 1104a...excavation area, 1140...construction scenario definition screen.

Claims

1. A construction planning device that prepares construction plans using electric construction machinery, comprising a calculation unit, wherein the calculation unit defines a construction scenario as information including construction layout information including information on the installation area of ​​power supply equipment that supplies power to the electric construction machinery and information on the work area of ​​the electric construction machinery, machinery and equipment information including battery capacity of the electric construction machinery and power consumption information indicating the power consumption for each operation of the electric construction machinery, construction rules including a charging method for the electric construction machinery, and construction process information indicating the movement route when the electric construction machinery performs construction, creates a plurality of construction scenarios with different movement routes, and calculates a plurality of simulation results including the operation time for each operation of the electric construction machinery based on the plurality of construction scenarios, and outputs the results to a user terminal.

2. A construction plan drafting device according to claim 1, wherein the calculation unit calculates the work efficiency of each of the plurality of construction scenarios based on the operation time for each operation of the electric construction machine included in the plurality of simulation results, and outputs the construction scenario with the highest work efficiency among the plurality of construction scenarios as the construction plan to a user terminal.

3. A construction planning device according to claim 2, wherein the calculation unit calculates the average operating rate of a plurality of the electric construction machines as the work efficiency.

4. A construction plan planning device according to claim 2, wherein the calculation unit sets the charging rate of the electric construction machine in the simulation results of the construction scenario output as the construction plan as a predicted charging rate value, sets the charging rate of the electric construction machine operated in accordance with the construction plan as an actual charging rate value, and when the difference between the predicted charging rate value and the actual charging rate value is equal to or greater than a predetermined threshold, calculates an estimated power consumption value for each operation of the electric construction machine based on the actual power consumption value of the electric construction machine, and updates the power consumption information with the estimated power consumption value.

5. A construction planning device according to claim 4, wherein the calculation unit creates a multiple regression model with the actual power consumption value as a response variable and the operation time for each operation of the electric construction machine as an explanatory variable, performs a multiple regression analysis of the multiple regression model, and uses the partial regression coefficients of the explanatory variables obtained by the multiple regression analysis as estimated values ​​of power consumption for each operation of the electric construction machine.

6. A construction planning device according to claim 4, wherein the calculation unit has a learning model that has been trained to input the amount of power consumed by the electric construction machine and the operating time for each operation and output the power consumption for each operation, the actual power consumption value and the operating time for each operation of the electric construction machine in the simulation results are input to the learning model, and the power consumption for each operation of the electric construction machine output from the learning model is used as an estimated power consumption value.

Images