Construction planning device

Abstract

This invention provides a construction planning device that enables the creation of highly efficient construction plans utilizing electric construction machinery. [Solution] In a construction planning device 1 that plans a construction plan 116 utilizing an electric construction machine 21, the device is equipped with a calculation unit 12. The calculation unit 12 creates multiple construction scenarios 114 in which the electric construction machine 21 takes different movement paths when performing construction work. Based on the multiple construction scenarios 114, it calculates multiple simulation results 115, including the operating time for each operation of the electric construction machine 21. Based on the operating time for each operation of the electric construction machine 21 included in the multiple simulation results 115, it calculates the work efficiency of each of the multiple construction scenarios 114. The device outputs the construction scenario 114 with the highest work efficiency among the multiple construction scenarios 114 as the construction plan 116.

Description

Technical Field

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

Background Art

[0002] As a document disclosing the prior art of an electric construction machine, for example, there is Patent Document 1. Patent Document 1 discloses an electric construction machine including a power storage device, an electric motor driven by the power of the power storage device, a hydraulic pump driven by the electric motor, a traveling hydraulic motor and a working hydraulic actuator driven by the pressure oil discharged from the hydraulic pump, a controller, and a display device. The electric construction machine further includes a movement information acquisition device for acquiring the movement information of the construction machine. The controller calculates and stores the power consumption of the electric motor consumed from when the construction machine departs from a charging facility until it arrives at a work site based on the movement information of the construction machine acquired by the movement information acquisition device, subtracts the power consumption from the power storage amount of the power storage device to calculate the power that can be consumed at the work site, calculates the operable time at the work site based on the power that can be consumed at the work site, and causes the display device to display the operable time at the work site (see Claim 1).

Prior Art Documents

Patent Documents

[0005] The present invention has been made in view of the above-mentioned problems, and its purpose is to provide a construction planning device that can formulate a construction plan with high work efficiency utilizing electric construction machinery. [Means for solving the problem]

[0006] To achieve the above objective, the present invention provides a construction planning device for formulating a construction plan utilizing an electric construction machine, 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 ​​a power supply facility that supplies power to the electric construction machine and information on the work area of ​​the electric construction machine, machine equipment information including the battery capacity of the electric construction machine and power consumption information indicating the power consumption for each operation of the electric construction machine, construction rules including a charging method for the electric construction machine, and construction process information indicating the movement path when the electric construction machine performs construction, creates a plurality of construction scenarios with different movement paths, calculates a plurality of simulation results including the operation time for each operation of the electric construction machine based on the plurality of construction scenarios, 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. [Effects of the Invention]

[0007] According to the present invention, it becomes possible to formulate a construction plan that utilizes electric construction machinery to achieve high work efficiency. [Brief explanation of the drawing]

[0008] [Figure 1] This is a functional block diagram of the construction planning device in the first embodiment. [Figure 2] This is a flowchart showing the processes performed by the calculation unit of the construction planning device. [Figure 3] This is a diagram showing an example of construction layout information. [Figure 4] This diagram shows the pre-construction layout information with the layout name added. [Figure 5] This diagram shows the pre-construction layout information in a data table format. [Figure 6] This figure shows an example of construction process information. [Figure 7] This flowchart details the process of creating multiple construction process information. [Figure 8] This diagram shows an example of a construction process generation rule. [Figure 9] This diagram shows an example of construction process information generated according to one record of the construction process generation rule. [Figure 10] This figure shows an example of basic specification information included in machine equipment information. [Figure 11] This figure shows an example of power consumption information included in machine equipment information. [Figure 12] This figure shows an example of a construction scenario definition screen. [Figure 13] This is a flowchart showing the details of the construction simulation. [Figure 14] This figure shows an example of time-based event information. [Figure 15] This diagram shows an example of charging rules for an electric excavator. [Figure 16] This figure shows an example of the behavior of an electric excavator in an excavation area. [Figure 17] This figure shows an example of how an electric excavator behaves when excavating outside of a charging area. [Figure 18]This is a diagram showing an example of simulation results. [Figure 19] This is a diagram showing an example of the calculation process of the operation rate and work efficiency for each machine. [Figure 20] This is a diagram showing the result of comparing the work efficiency of two construction scenarios. [Figure 21] This is a diagram showing an example of a construction plan. [Figure 22] This is a functional block diagram of the construction plan creation device in the second embodiment. [Figure 23] This is a flowchart showing the processing of the power consumption information update unit. [Figure 24] This is a diagram showing an example of the power consumption history.

Mode for Carrying Out the Invention

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

Example

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

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

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

[0013] Network 102 connects the user terminal 103, the database 104, and the construction planning device 1 in a way that enables communication between them. Network 102 is, for example, a communication network that uses a public network such as a LAN (Local Area Network), WAN (Wide Area Network), VPN (Virtual Private Network), or the Internet, either partially or entirely.

[0014] The construction planning device 1 is an information processing device such as a PC or server computer, and comprises 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 receives instructions for the calculation unit 12. The output unit 14 outputs the calculation results of the calculation unit 12. The information processing device as the construction planning device 1 is equipped with a calculation unit such as a CPU, a storage device such as ROM, RAM, or HDD, and an input / output interface for signal input and output with external devices, and realizes the functions of each unit by executing a program stored in ROM or the like.

[0015] The memory 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 memory unit 11 will be described later.

[0016] Next, the processing flow executed by the calculation unit 12 of the construction planning device 1 in this embodiment will be explained using the flowchart in Figure 2.

[0017] The following series of processes assumes that a predetermined number of construction layout information 110 obtained from the database 104, along with mechanical equipment information 111, construction process information 112, and construction rules 113, are stored in the storage unit 11, and are initiated, for example, in response to a start command from the user to the user terminal 103. 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 obtained. An example of construction layout information 110 is shown in Figure 3. Construction layout information 110 includes the 3D shape of the terrain before construction at the construction site (pre-construction layout information 110a), the 3D shape of the terrain after construction (post-construction layout information 110b), and the arrangement and names (layout names) of entrances and exits, excavation areas, dump truck loading areas, etc. at the construction site. Figure 4 is a diagram showing the pre-construction layout information 110a in Figure 3 with layout names added. For example, the layout name "Entrance / Exit" is the entrance and exit of the construction site, "[1]A" and "[1]B" are the power supply equipment installation area 1101, "[2]" is the dump truck loading area 1102, "[3]" is the shovel loading area 1103, and the shaded area of ​​"[4]" is the excavation area 1104. The power supply equipment installation area 1101 is the area where power supply equipment 23 (shown in Figure 6) is installed, which supplies power to electric construction machinery such as the electric excavator 21 (shown in Figure 6). The dump truck loading area 1102 is the area where the dump truck 22 (shown in Figure 6) is positioned when receiving soil from the electric excavator 21. The excavator loading area 1103 is the area where the electric excavator 21 is positioned when loading soil into the dump truck 22. The excavation area 1104 is an example of an area where electric construction machinery performs work (work area), and the work area is not limited to the excavation area. In addition, the construction layout information 110 may be stored in the form of a data table. Figure 5 is a diagram showing the pre-construction layout information 110a of Figure 4 in data table format. 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 3D 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 in that location.

[0019] Returning to Figure 2, following step S101, multiple construction process information 112 are generated (step S102). An example of construction process information 112 is shown in Figure 6. The construction process information 112 indicates the path the electric excavator 21 will take as it moves through the excavation area 1104 while performing the excavation work.

[0020] Figure 7 is a flowchart detailing the process of creating multiple construction process information 112 (step S102 in Figure 2). First, pre-construction layout information 110a (shown in Figure 5) is read (step S201), and records with a "Excavation Flag" column of 1 are extracted (step S202).

[0021] Following step S202, one record of the construction process generation rule 113a included in construction rule 113 is read (step S203). Figure 8 shows an example of construction process generation rule 113a. Construction process generation rule 113a has data columns such as "generation rule name", "excavation direction", and "reversal direction", and the method of creating the movement path is registered for each generation rule name.

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

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

[0024] Returning to Figure 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 placed at the construction site, for example, information about the electric excavator 21, dump truck 22, and power supply equipment 23. Figure 10 shows an example of the basic specification information 111a included in the machine equipment information 111. The basic specification information 111a has data columns such as the "machine number" of the machine equipment, the "type" of the machine equipment, the "bucket capacity" when the type of machine equipment is an electric excavator 21, the "loading capacity" when the type of machine equipment is a dump truck, and the "battery capacity", "charging power", "output power", and "charging cable length" when the type of machine equipment is a power supply equipment. Note that the data columns used differ depending on the type of machine equipment. For example, if the type is a power supply equipment, the data columns "battery capacity", "charging power", "output power", and "charging cable length" are used; if it is a dump truck, the data columns "travel speed" and "loading capacity" are used; and if it is an electric excavator, the data columns "bucket capacity", "travel speed", "battery capacity", and "charging power" are used. Figure 11 shows an example of power consumption information 111b included in the machine equipment information 111. The power consumption information 111b registers the power consumption for each unit and operation (excavation, loading, driving, standby, charging stop, etc.) of the electric excavator 21 (shown in Figure 9). Excavation is the operation of digging up soil in the excavation area 1104, loading is the operation of loading soil into the dump truck 22 (shown in Figure 9) parked next to the shovel loading area 1103, standby is the idling operation, and charging stop is the operation of charging at the power supply equipment 23 (shown in Figure 6).

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

[0026] Returning to Figure 12, once the name and coordinates (x,y) of the soil disposal site to be loaded by the dump truck 22 are set in the soil disposal site information 114d, the distance from the dump truck side-by-side area 1102 to the soil disposal site is calculated and displayed by the construction planning device 1.

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

[0028] Figure 13 is a detailed flowchart 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 amount of soil V to be transported is calculated by subtracting volume Vb from volume Va (step S301).

[0030] Following step S301, the total number of dump trucks D used for transporting earth and sand is calculated using equation (1) (step S302). Here, the dump truck load capacity M is extracted from the basic specification information 111a, based on the load capacity of the truck corresponding to the dump truck side-mounting area in the construction layout configuration information 114b. Note that "Roundup" in equation (1) is a function that rounds up the decimal part. D = Roundup(V / M) ... (1)

[0031] Following step S302, the time event information 113b and charging rule 113c included in the construction rule 113 are read (step S303). Figure 14 shows an example of time event information 113b. Time event information 113b has a data sequence containing the event name and the conditions under which the event occurs. For example, the start of work event occurs when the time in the construction simulation is 8:30. Figure 15 shows an example of charging rule 113c for the electric excavator 21. Similarly, charging rule 113c also has a data sequence containing the event name and the conditions under which the event occurs. For example, the lower limit of charging event occurs when the charging rate falls below 20%. The charging rate can be calculated using the following formula (2). Charge level = remaining battery capacity / battery capacity ... (2)

[0032] Returning to Figure 13, following step S303, the simulation time is initialized to the start time (step S304), behavior processing for each machine is performed (steps S305, S306), and the simulation time is advanced by a unit of time (0.5 [h] in this embodiment) (step S307). Figure 16 shows an example of the behavior of the electric excavator 21 in the excavation area 1104. It starts moving based on the occurrence of events such as the start of work and the end of a break, and when it arrives at the destination on the route described in the construction process, it starts excavating. After completing a predetermined amount of excavation, it moves to the next destination on the route. Thereafter, the same operation is repeated. This behavior and the calculation of the remaining battery capacity and charge rate proceed as time progresses in the simulation. Figure 17 shows an example of the behavior of the electric excavator 21 when excavating outside the rechargeable area 1100. When the electric excavator 21 is excavating outside the charging area 1100, it will move to a location within reach of the charging cable (within the charging area 1100) based on events such as the start of a break or the lower limit of the battery charge level occurring, and will begin charging. It will start moving again based on events such as the upper limit of the battery charge level or the end of a break occurring, and will resume excavation work upon arriving back at its original location.

[0033] Returning to Figure 13, the process in steps S305 to S307 is repeated until the number of soil transport operations reaches D, after which the simulation result 115 is output (steps S308, S309). Figure 18 shows an example of the simulation result 115. The simulation result 115 has data columns such as "Time", "Unit", "Elapsed Time", "Work Name", "Excavation Time", "Travel Time", "Cumulative Excavation Time", "Cumulative Loading Time", "Cumulative Travel Time", and "Charge Rate". Here, elapsed time is the time [h] that has elapsed from the start of the simulation, and cumulative excavation time and cumulative loading time mean the total value of the operation time from the start of the simulation to the record for each excavation and loading operation.

[0034] Returning to Figure 2, following step S106, the average operating rate for each machine (average operating rate) is calculated as the work efficiency (step S107). The operating rate for each machine can be calculated using the following formula (3) with the cumulative excavation time and cumulative loading time of the record in the simulation result 115 where the "elapsed time" column is maximum. Operating rate = (Cumulative drilling time + Cumulative loading time) / Elapsed time ... (3)

[0035] Figure 19 shows an example of the calculation process for the operating rate and work efficiency for each machine. In Figure 19, the operating rate of electric excavator machine "04" is (cumulative excavation time "5.5" + cumulative loading time "0") / elapsed time "9" = 61%. The operating rate of electric excavator machine "03" is (cumulative excavation time "0" + cumulative loading time "5.7") / elapsed time "9" = 63%. As a result, the work efficiency is the average of the operating rates of machine "04" (61%) and machine "03" (63%) = 62%.

[0036] Returning to Figure 2, step S108 determines whether the work efficiency for all construction scenarios 114 has been calculated, following step S107. If the result of step S107 is No, return to step S105; if the result is Yes, proceed to step S109.

[0037] In step S109, the construction scenario 114 with the highest work efficiency is identified, and its simulation results are registered as the construction plan 116. Figure 20 shows a comparison of the work efficiency of construction scenario (1) and construction scenario (2). In construction scenario (1), excavation is carried out by frequently moving between the rechargeable area 1100 included in the excavation area 1104 and the excavation area 1104a outside the rechargeable area 1100. Therefore, the battery charge rate does not reach the 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 carried out continuously for a long period of time in the excavation area 1104a outside the rechargeable area 1100. Therefore, the battery charge rate reaches the lower limit during excavation in the excavation area 1104a, and excavation is interrupted to charge, resulting in a low work efficiency of "59%". Based on these results, construction scenario (1), which has the highest work efficiency, is registered as the construction plan 116. Figure 21 shows an example of a construction plan 116. The construction plan 116 includes a work schedule for each machine and each hour, as well as a construction scenario (construction layout information 110, power supply information 114c, and soil disposal site information 114d) set on the construction scenario definition screen 1140.

[0038] (summary) In the first embodiment, a construction planning device 1 for formulating a construction plan 116 utilizing an electric excavator 21 (electric construction machine) is equipped with a calculation unit 12, the calculation unit 12 includes construction layout information 110 including information on the power supply equipment installation area 1101 for supplying power to the electric excavator 21 and information on the excavation area 1104 (work area) of the electric excavator 21, machine equipment information 111 including the battery capacity of the electric excavator 21 and power consumption information 111b indicating the power consumption of the electric excavator 21 for each operation of the electric excavator 21, construction rules 113 including the charging method of the electric excavator 21, and electric excavator Information including construction process information 112 that shows the movement path when 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 excavator 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 excavator 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.

[0039] According to the first embodiment configured as described above, simulations are performed using multiple construction scenarios 114 with different movement paths when the electric excavator 21 performs construction work, and the construction scenario 114 that yields the highest work efficiency is output as a construction plan 116. This makes it possible to formulate a construction plan 116 with high work efficiency utilizing the electric excavator 21.

[0040] Furthermore, the construction plan creation unit 121 in the first embodiment calculates the average operating rate of the multiple electric excavators 21 as the work efficiency. This makes it possible to formulate a construction plan that operates the multiple electric excavators 21 without bias. Note that the work efficiency is not limited to the average operating rate of the multiple electric excavators 21, and an index value that decreases according to the number of dump trucks 22 to be transported or the number of days required for the construction plan may also be calculated as the work efficiency. [Examples]

[0041] The second embodiment of the present invention will be described primarily in terms of its differences from the first embodiment.

[0042] Figure 22 is a functional block diagram of the construction planning device 1 in the second embodiment. The calculation unit 12 of the construction planning device 1 in this 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 machine equipment information 111 when there is a discrepancy between the charge rate (predicted charge rate) of the electric excavator 21 in the simulation result 115 of the construction plan 116 and the charge rate (actual charge rate) of the electric excavator 21 that operated according to the construction plan 116.

[0043] Figure 23 is a flowchart showing the processing of the power consumption information update unit 123. First, the power consumption information update unit 123 reads the simulation results 115 of the construction plan 116 and the power consumption history 117 (step S401). Figure 24 shows an example of the power consumption history 117. The power consumption history 117 has data columns such as time, unit number, actual charge rate, and actual power consumption.

[0044] Returning to Figure 23, following step S401, the discrepancy point (shown in equation (4)) between the charge rate (actual charge rate value) of the power consumption history 117 and the charge rate (predicted charge rate value) of the simulation result 115 is calculated for each unit, and the power consumption for each operation of the unit whose discrepancy point exceeds a predetermined threshold Q is estimated (steps S402 to S404). Discrepancy point = |Predicted charge rate - Actual charge rate|...(4)

[0045] In step S403, if the target machine is "i", the machine's operation is "j", and the time point in the time series is "t", then the actual power consumption value "C i,t The objective variable is "x", and the operation time in simulation result 115 is "x i,t,j Create a multiple regression model with "x" as the explanatory variable. Next, perform a multiple regression analysis on the created multiple regression model and analyze the explanatory variable "x". i,t,j The partial regression coefficient "R" corresponds to " i,j The power consumption estimate will be ". Note that the power consumption estimation method is "Ci,t " and "x i,t,j You may also obtain an estimated power consumption value using a trained model that takes "" as input and is trained to output power consumption for at least one operation.

[0046] Following steps S402 to S404, the power consumption information 111b included in the machine equipment information 111 (shown in Figure 22) is updated with the estimated power consumption for each operation of the target machine (step S405). After this, by re-running the construction simulation (shown in Figure 2), a construction plan 116 that is in line with the actual situation can be formulated.

[0047] (summary) In the second embodiment, the calculation unit 12 uses the charge rate of the electric excavator 21 (electric construction machine) in the simulation results of the construction scenario 114 output as the construction plan 116 as the predicted charge rate value, and the charge rate of the electric excavator 21 operating according to the construction plan 116 as the actual charge rate value. When the difference between the predicted charge rate value and the actual charge rate value exceeds a predetermined threshold, the calculation unit 12 calculates an estimated power consumption value for each operation of the electric excavator 21 based on the actual power consumption value of the electric excavator 21, and updates the power consumption information 111b with the estimated power consumption value.

[0048] In the second embodiment configured as described above, it is possible to formulate a construction plan 116 with high work efficiency utilizing the electric excavator 21, similar to the first embodiment. Furthermore, by updating the power consumption information 111b based on the actual power consumption values ​​of the electric excavator 21, the power consumption information 111b becomes more accurate to the actual situation, thereby improving the accuracy of the construction simulation.

[0049] Furthermore, in the second embodiment, the calculation unit 12 creates a multiple regression model with the actual power consumption value as the dependent variable and the operating time for each operation of the electric excavator 21 as the independent variable. It then performs a multiple regression analysis on the multiple regression model and uses the partial regression coefficients of the independent variable obtained from the multiple regression analysis as the estimated power consumption for each operation of the electric excavator 21. This makes it possible to improve the accuracy of the power consumption estimate.

[0050] Furthermore, the calculation unit 12 in the second embodiment has a learning model that takes the power consumption of the electric excavator 21 and the operating time for each operation as inputs and outputs the power consumption for each operation. The actual power consumption value and the operating time for each operation of the electric excavator 21 (electric construction machine) in the simulation results are input to the learning model, and the power consumption for each operation of the electric excavator 21 output from the learning model is used as the estimated power consumption value. This makes it possible to improve the accuracy of the estimated power consumption value.

[0051] Although embodiments of the present invention have been described in detail above, the present invention is not limited to the embodiments described above and includes various modifications. For example, the embodiments described above are described in detail in order to explain the present invention in an easy-to-understand manner and are not necessarily limited to those having all the configurations described. Furthermore, it is possible to add parts of the configuration of one embodiment to the configuration of another embodiment, and it is also possible to delete parts of the configuration of one embodiment or replace parts of parts of another embodiment. [Explanation of Symbols]

[0052] 1...Construction planning device, 11...Storage unit, 12...Calculation unit, 13...Input unit, 14...Output unit, 21...Electric excavator (electric construction machine), 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 and 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 disposal site information, 115...Simulation results, 116...Construction plan, 117...Power consumption history, 121...Construction plan creation unit, 122...Construction simulator unit, 123...Power consumption information update unit, 1100...Charging area, 1101...Power supply equipment installation area, 1102...Dump truck access area, 1103...Shovel loading area, 1104, 1104a...Excavation area, 1140...Construction scenario definition screen.

Claims

1. In a construction planning device that formulates construction plans utilizing electric construction machinery, Equipped with a calculation unit, The aforementioned arithmetic unit, A construction scenario is defined as information including construction layout information, which includes information regarding the installation area of ​​the power supply equipment that supplies power to the electric construction machine and information regarding the work area of ​​the electric construction machine; machine equipment information, which includes the battery capacity of the electric construction machine and power consumption information, which indicates the power consumption for each operation of the electric construction machine; construction rules, which include the charging method of the electric construction machine; and construction process information, which indicates the movement path when the electric construction machine performs construction. Create multiple construction scenarios with different travel routes, Based on the above-mentioned multiple construction scenarios, multiple simulation results are calculated, including the operating time for each operation of the electric construction machine. Based on the operating time for each operation of the electric construction machine included in the above-mentioned multiple simulation results, the work efficiency of each of the above-mentioned multiple construction scenarios is calculated. The construction plan outputs the construction scenario with the highest work efficiency among the multiple construction scenarios mentioned above. A construction planning device characterized by the following features.

2. In the construction planning device according to claim 1, The calculation unit calculates the average operating rate of the multiple electric construction machines as the work efficiency. A construction planning device characterized by the following features.

3. In the construction planning device according to claim 1, The aforementioned arithmetic unit, The charge rate of the electric construction machine in the simulation results of the construction scenario output as the construction plan is taken as the predicted charge rate value. The charge rate of the electric construction machine operated in accordance with the aforementioned construction plan shall be defined as the actual charge rate value. When the difference between the predicted charge rate and the actual charge rate exceeds a predetermined threshold, an estimated power consumption value for each operation of the electric construction machine is calculated based on the actual power consumption value of the electric construction machine. The power consumption information is updated with the estimated power consumption value. A construction planning device characterized by the following features.

4. In the construction planning device described in claim 3, The aforementioned arithmetic unit, A multiple regression model was created with the aforementioned actual power consumption value as the dependent variable and the operating time for each operation of the electric construction machine as the independent variable. A multiple regression analysis of the aforementioned multiple regression model was performed. The partial regression coefficients of the explanatory variables obtained in the multiple regression analysis are used as the estimated power consumption for each operation of the electric construction machine. A construction planning device characterized by the following features.

5. In the construction planning device described in claim 3, The aforementioned arithmetic unit, The electric construction machine has a learning model that takes the power consumption and operating time for each operation as inputs and outputs the power consumption for each operation. The actual power consumption values ​​and the operating time for each operation of the electric construction machine in the simulation results are input into the learning model. The power consumption for each operation of the electric construction machine, output from the aforementioned learning model, is used as the estimated power consumption value. A construction planning device characterized by the following features.

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