Construction management device

Abstract

To provide a construction management device capable of obtaining information to appropriately review the impact on the work schedule and the work method.SOLUTION: A construction management device 200 is a device for estimating the required work time for a work machine to complete work in a construction area CA. The construction management device creates a work efficiency map EM that correlates work efficiency with work positions within the construction area based on construction area information, information on the work position WP of the work machine within the construction area, and information of the workload (WL) at the work position of the work machine, and calculates the estimated time required for the task (RT) based on the work efficiency map and construction area information.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a construction management device. [Background technology]

[0002] 2. Description of the Related Art Work machines such as excavators used in construction work at civil engineering sites have a frame that forms a main body, and wheels or tracks for traveling, and perform desired work in response to operational instructions from an operator.

[0003] Civil engineering work carried out with such work machines, especially excavation work, is affected by various factors such as the condition of the work target, the capabilities of the work machine, and the capabilities of the operator, so the work may not be completed within the expected period, posing a problem in construction management.In particular, when the work target is natural ground, the operator may encounter soil that is harder than expected at the start of construction, which can cause problems that affect the construction plan, such as the excavation work taking longer or the need for other work machines with greater work capabilities.

[0004] For example, Patent Document 1 discloses a technology that, by inputting geological data including soil boundaries into two-dimensional image data captured by an imaging device and linking it to three-dimensional data of the construction target, it is possible to efficiently update soil information even if the actual soil quality differs from the results of the survey conducted at the start of construction. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 2018-21885 Summary of the Invention [Problem to be solved by the invention]

[0006] However, the above-mentioned conventional technology does not provide sufficient information to evaluate the impact on the process or to review the excavation method. The construction manager needs to consider how long the work will take and whether other work machines with additional work capabilities are needed, taking into account changes in soil quality and related events. The present invention has been made in consideration of the above circumstances, and aims to provide a construction management device that can obtain information for appropriately reviewing the impact on the process and work methods. [Means for solving the problem]

[0007] The construction management device of the present invention that solves the above problems is: A construction management device that performs processing to estimate a required work time required for a construction machine to complete work within a construction range based on various vehicle body information and construction conditions of the construction machine, a construction range acquisition unit that acquires information about the construction range; a work position acquisition unit that acquires information about the work position of the work machine within the construction range; a workload acquisition unit that acquires information about the workload at the work position of the work machine; a work efficiency map creation unit that calculates work efficiency at the work position of the work machine based on information about the work position of the work machine acquired by the work position acquisition unit and information about the work load acquired by the work load acquisition unit, and creates a work efficiency map that associates the work efficiencies with work positions in the construction area; and a required work time calculation unit that calculates an estimated value of the required work time based on the work efficiency map and information on the construction area; The present invention is characterized by comprising: [Effects of the Invention]

[0008] According to the present invention, it is possible to obtain information for appropriately reviewing the influence on the process and the work method. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 2 is a diagram showing an example of a hardware configuration. [Figure 2] FIG. 2 is a functional block diagram of the construction management device. [Figure 3] FIG. 2 is a sequence diagram showing the flow of construction management work using the construction management device. [Figure 4] 4 is a flowchart illustrating internal processing of the construction management device. [Figure 5] An illustration of a soil distribution map. [Figure 6] An illustration of a work efficiency map. [Figure 7] Example of calculation of work efficiency for each soil type. [Figure 8] Example of calculation of estimated work time required for each soil type. [Figure 9] An illustration of a notification of decreased work efficiency. [Figure 10] FIG. 10 is a diagram showing a modified example of the present embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] First Embodiment (Description of equipment configuration) (Description of hardware appearance and layout) A first embodiment of the present invention will be described below with reference to the drawings. Fig. 1 is a diagram showing an example of a hardware configuration.

[0011] The hydraulic excavator 100 is a work machine that is operated by an operator to perform excavation work and the like, and includes a traveling device 101, an upper rotating body 102, and a front 103. A work device 104 is attached to the front 103. The upper rotating body 102 includes an internet communication device 105 and an on-board terminal 106.

[0012] The on-board terminal 106 is a small on-board controller that controls the hydraulic excavator 100, and is configured, for example, by a computer system including a CPU (Central Processing Unit) as a calculation unit and a storage unit, RAM (Random Access Memory), ROM (Read Only Memory), an input / output circuit, a communication circuit (none of which are shown), etc. The on-board terminal 106 is realized by the CPU or the like reading and executing a computer program stored in the RAM, ROM, etc.

[0013] The on-board terminal 106 acquires the geographical coordinates of the work device 104 using an attitude sensor and a satellite positioning device (not shown), and can also acquire the work load based on the pressure value of the front cylinder (not shown). The on-board terminal 106 has a construction management device that calculates work efficiency and required work time based on various vehicle information and construction conditions.

[0014] The administrator terminal 300 is a portable computer that inputs and outputs construction-related information through operation by the administrator, and is configured as a tablet or smartphone. Both the in-vehicle terminal 106 and the administrator terminal 300 can communicate with each other via an Internet line using a mobile phone communication network.

[0015] (Explanation of control system and input / output) FIG. 2 is a functional block diagram of the construction management device according to this embodiment. The construction management device 200 executes a software program stored in the storage unit in a calculation unit to estimate the required work time required for the hydraulic excavator 100 to complete work in a construction area. As shown in FIG. 2 , the construction management device 200 has, as functions embodied by the execution of the software program, a work position acquisition unit 201 that acquires the work position from a positioning device provided in the hydraulic excavator 100, a work load acquisition unit 202 that acquires the work load from a sensor that detects the load (pressure) of the hydraulic actuator that drives the front 103 and the work implement 104 of the hydraulic excavator 100, a construction area acquisition unit 203 that acquires the construction area of ​​the hydraulic excavator 100, a soil distribution map acquisition unit 204 that acquires a map of the soil type of the construction area to be constructed by the hydraulic excavator 100, and a work efficiency threshold storage unit 205 that stores, as a threshold, a target value for the work efficiency of the work performed by the hydraulic excavator 100. The work position acquisition unit 201 acquires information on the work position WP of the work implement 104 using geographic coordinates. The workload acquisition unit 202 acquires information on the workload WL of the front desk 103. The construction area acquisition unit 203 acquires information on the construction area CA input from the manager terminal 300. The soil distribution map acquisition unit 204 acquires information on the soil distribution map MM input from the manager terminal 300. The work efficiency threshold memory unit 205 stores a predetermined work efficiency threshold ET.

[0016] The construction management device 200 also has, as functions realized by execution of the software program, a work efficiency map creation unit 210, a required work time calculation unit 220, a required work time notification unit 230, a work efficiency decline detection unit 240, and a work efficiency decline notification unit 250. The work efficiency map creation unit 210 creates a work efficiency map EM based on the work position WP acquired by the work position acquisition unit 201 and the workload WL acquired by the workload acquisition unit 202.

[0017] The required work time calculation unit 220 calculates the required work time RT required for the work machine to complete work in the work range, based on the work efficiency map EM created by the work efficiency map creation unit 210, the work range CA acquired by the work range acquisition unit 203, and the soil distribution map MM acquired by the soil distribution map acquisition unit 204. The required work time notification unit 230 notifies the manager terminal 300 of the manager of the required work time RT calculated by the required work time calculation unit 220.

[0018] The work efficiency decline detection unit 240 detects a work efficiency decline event EE based on the work efficiency map EM calculated by the work efficiency map creation unit 210 and the work efficiency threshold ET stored in the work efficiency threshold storage unit 205. The work efficiency decline notification unit 250 notifies the administrator terminal 300 of the work efficiency decline event EE detected by the work efficiency decline detection unit 240.

[0019] (Processing Description) Next, the processing flow of the construction management work in the first embodiment will be described. FIG. 3 is a sequence diagram showing a series of steps involved in a construction management operation using a work machine equipped with the construction management device of the first embodiment, and FIG. 4 is a flowchart illustrating the internal processing of the construction management device.

[0020] 3 and 4, the loop processing enclosed by the dashed rectangle is processing that is periodically performed while the hydraulic excavator 100 is in operation. In this embodiment, this loop processing is performed once per minute.

[0021] When the operator turns on the engine of the hydraulic excavator 100 (S800 in FIG. 3) at the start of construction, the construction management device 200 acquires information about this ON operation. Then, when the manager inputs the construction range (S603 in FIG. 3) and the soil distribution map MM (S604 in FIG. 3) from the manager terminal 300, the construction management device 200 acquires information about the construction range (S703 in FIG. 4) and information about the soil distribution map MM (S704 in FIG. 4) using the construction range acquisition unit 203 and the soil distribution map acquisition unit 204. The loop processing indicated by the dashed lines in FIGS. 3 and 4 will be described below.

[0022] When the operator performs the desired construction operation using the hydraulic excavator 100 (S810 in Figure 3), the construction management device 200 uses the work position acquisition unit 201 and the workload acquisition unit 202 to acquire the work position (S701 in Figure 4) and the workload WL (S702 in Figure 4) corresponding to this construction operation.

[0023] The construction management device 200 uses the work efficiency map creation unit 210 to calculate the work efficiency at the work position of the hydraulic excavator 100, and creates a work efficiency map EM that associates the work efficiency with the work position in the construction area (S710 in FIG. 4). The construction management device 200 uses the required work time calculation unit 220 to calculate the required work time (S720 in FIG. 4), and transmits this calculation result to the manager terminal 300 (S730 in FIG. 4). The construction management device 200 also uses the work efficiency decline detection unit 240 to detect a decline in excavation efficiency (S740 in FIG. 4), and transmits this detection result to the manager terminal 300 (S750 in FIG. 4). The manager reviews the process and work method as necessary based on the results transmitted to the manager terminal 300 (S610 in FIG. 3).

[0024] Figure 5 is an image of the soil distribution map MM. The soil distribution map MM stores information on soil properties in units of small cells GD divided into a grid. In the example shown in Fig. 5, the area within the dashed rectangle in the soil distribution map MM is set as the construction area CA. In this embodiment, soil properties are classified into four levels, from A (soft rock) to D (hard rock). The soil properties are determined from known information obtained by boring surveys at the start of construction, etc.

[0025] FIG. 6 is an image diagram of the work efficiency map. The work efficiency map EM stores information on work efficiency in association with work positions in the construction area CA. In this embodiment, as with the soil distribution map MM described above, information on the work efficiency of the hydraulic excavator 100 is stored in units of small cells GD divided into a grid in the work efficiency map EM. Since work efficiency is generally affected by the ease of digging the excavation target, i.e., the soil quality and condition, it is drawn as an overlay on the soil distribution map MM. In this embodiment, work efficiency is divided into five levels ranging from 100% to 20%.

[0026] Figure 7 shows an example of calculation of work efficiency for each soil type. Work efficiency is calculated using the actual work time and the design work time. Average work efficiency is calculated using the median work efficiency of each cell, the number of cells, and the number of completed cells. A table is created that aggregates the work efficiency in the completed cells GD for each soil type within the construction area CA, and the expected work efficiency is calculated. For ease of explanation, work efficiency is divided into five levels and the median value of each level is referenced, but more accurate calculations can be made by dividing the levels more finely. 100% work efficiency is defined based on the specification values ​​or actual values ​​of the hydraulic excavator 100, and is expressed in units of the area or volume constructed per hour. When work efficiency exceeds 100%, it is assumed to fall within the 100% level.

[0027] Figure 8 shows an example of calculation of estimated values ​​of required work time for each soil type. The work efficiency map creation unit 210 creates a table that tallies the number of unconstructed cells for each soil type within the construction area CA, and calculates an estimate of the required work time. The estimated value of the required work time for each soil type is calculated by multiplying the average work efficiency for each soil type calculated in Figure 7 by the number of unconstructed cells for each soil type.

[0028] FIG. 9 is an image diagram of the notification of a decrease in work efficiency. The work efficiency decline detection unit 240 compares the work efficiency associated with the processed cell in the work efficiency map EM with the work efficiency threshold ET stored in the work efficiency threshold memory unit 205, and if it detects that the work efficiency is lower than the work efficiency threshold ET, it determines that an unexpected decline in work efficiency has occurred and issues a work efficiency decline event EE to the administrator terminal 300. In this embodiment, the work efficiency decline event EE is notified to the administrator by drawing a warning mark MK on the soil distribution map MM displayed on the administrator terminal 300, thereby notifying the administrator that an unexpected decline in work efficiency has occurred and the location where it occurred.

[0029] In this embodiment, as described above, soil types are classified into four types and the estimated values ​​of work efficiency and required work time are calculated, but the definition of soil type is not limited to this. The estimated values ​​of work efficiency and required work time may be calculated for a single soil type without distinguishing between soil types.

[0030] As described above, in this embodiment, the work efficiency is calculated in units of square cells GD divided into a grid, but the calculation unit of work efficiency is not limited to this. It may be calculated in units of predetermined regions divided into polygons, or in units of three-dimensional regions divided into voxels.

[0031] As described above, in this embodiment, the manager terminal 300 is notified of the decline in work efficiency by drawing the result on the soil distribution map MM, but the notification method is not limited to this. A simple notification by e-mail or the like may be used instead. Preferably, by providing additional information necessary to identify the cause of the decline in work efficiency, such as the presence or absence of vehicle abnormalities and excavation performance specifications, the manager can efficiently review the process and work methods.

[0032] (Effects of the embodiment) In this embodiment configured as described above, a work efficiency map EM is created from actual work results, and work efficiency according to the actual situation can be grasped with high accuracy, so the required work time for work in a specified construction area can be estimated. As a result, information is obtained for appropriately reviewing the impact on the process and work methods.

[0033] In addition, since work efficiency is calculated for each soil type and the time required for work is estimated based on the soil type at the site, the impact on the process can be grasped with high accuracy even at sites with a variety of soil types. Furthermore, when work efficiency decreases locally, the system notifies the occurrence of an event of a decrease in work efficiency, allowing for early detection of any trouble, such as an unexpected change in soil type or a breakdown of work machinery.

[0034] (Variation) FIG. 10 is a diagram showing a modified example of this embodiment. In the above-described embodiment, a configuration has been described in which the construction management device 200 is provided inside the hydraulic excavator 100, which is a work machine, but the present invention is not limited to this. For example, the construction management device 200 can be provided inside the server 107, and information can be acquired from multiple hydraulic excavators 100A, 100B performing work within the same construction area, and an estimate of the required work time can be calculated.

[0035] The above-described embodiment has the following advantages. (1) The construction management device 200 performs processing to estimate the required work time required for the hydraulic excavator 100 to complete work in a construction area CA, based on various types of vehicle information and construction conditions of the work machine, and is equipped with a construction area acquisition unit 203 that acquires information about the construction area CA, a work position acquisition unit 201 that acquires information about the work position WP of the hydraulic excavator 100 within the construction area CA, a workload acquisition unit 202 that acquires information about the workload WL at the work position WP of the hydraulic excavator 100, a work efficiency map creation unit 210 that calculates the work efficiency at the work position WP of the hydraulic excavator 100 based on the information about the work position WP of the hydraulic excavator 100 acquired by the work position acquisition unit 201 and the information about the workload WL acquired by the workload acquisition unit 202, and creates a work efficiency map EM that associates the work efficiency with the work position in the construction area CA, and a required work time calculation unit 220 that calculates an estimated value RT of the required work time based on the work efficiency map EM and the information about the construction area CA.

[0036] According to this configuration, a work efficiency map EM can be created from actual work results, and work efficiency according to the actual situation can be grasped with high accuracy, making it possible to estimate the work time required for work in a predetermined construction area CA using the hydraulic excavator 100. As a result, information can be obtained that is needed to appropriately review the impact on the process and work methods.

[0037] (2) The hydraulic excavator 100 further includes a soil distribution map acquisition unit 204 that acquires information on the soil distribution in the working area CA, and the work efficiency map creation unit 210 calculates the work efficiency for each soil type defined by the soil distribution.

[0038] With this configuration, work efficiency is calculated for each soil type, and the time required for work is estimated and calculated based on the soil type at the site, so the impact on the process can be grasped with high accuracy even at sites with a variety of soil types.

[0039] (3) It is equipped with a work efficiency threshold memory unit 205 that stores a work efficiency threshold ET, and a work efficiency decline detection unit 240 that compares the work efficiency with the work efficiency threshold ET to detect whether the work efficiency has declined below the work efficiency threshold ET.

[0040] According to this configuration, when work efficiency decreases locally, the work efficiency decrease notification unit 250 notifies the administrator terminal 300 of the occurrence of an event of a decrease in work efficiency, so that the occurrence of some kind of trouble, such as an unexpected change in soil quality or a breakdown in a work machine, can be detected early.

[0041] 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 various design modifications can be made within the scope of the invention as set forth in the claims. [Explanation of symbols]

[0042] 100: Hydraulic excavator (work machine), 101: Traveling device, 102: Upper rotating body, 103: Front, 104: Work device, 105: Internet communication device, 106: In-vehicle terminal (controller), 200: Construction management device, 201: Work position acquisition unit, 202: Work load acquisition unit, 203: Construction range acquisition unit, 204: Soil distribution map acquisition unit, 205: Work efficiency threshold memory unit, 210: Work efficiency map creation unit, 220: Required work time calculation unit, 230: Required work time notification unit, 240: Work efficiency decline detection unit, 250: Work efficiency decline notification unit, 300: Administrator terminal

Claims

1. A construction management device that performs processing to estimate a required work time required for a construction machine to complete work within a construction range based on various vehicle body information and construction conditions of the construction machine, a construction range acquisition unit that acquires information about the construction range; a work position acquisition unit that acquires information about the work position of the work machine within the construction range; a workload acquisition unit that acquires information about the workload at the work position of the work machine; a work efficiency map creation unit that calculates work efficiency at the work position of the work machine based on information about the work position of the work machine acquired by the work position acquisition unit and information about the work load acquired by the work load acquisition unit, and creates a work efficiency map that associates the work efficiencies with work positions in the construction area; and a required work time calculation unit that calculates an estimated value of the required work time based on the work efficiency map and information on the construction area; A construction management device comprising:

2. The construction management device according to claim 1, a soil distribution map acquisition unit that acquires information about soil distribution in the construction range of the work machine, The work efficiency map creation unit A construction management device that calculates the work efficiency for each soil type defined by the soil type distribution.

3. The construction management device according to claim 1, a work efficiency threshold storage unit that stores a work efficiency threshold; a work efficiency decline detection unit that compares the work efficiency with the work efficiency threshold and detects whether the work efficiency has declined below the work efficiency threshold; A construction management device comprising:

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