JP2007188224A - Excavation/landfill information management device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To achieve the reduction of costs and the simplification of personnel education management for making an operation management server acquire the conveyance information of a conveyance vehicle, and to improve operating efficiency in an excavation section in an excavation/landfill information management device. <P>SOLUTION: This control system 100 loaded on a backhoe 10 is provided with a touch panel PC110 and an information controller 130, and when a mail horn SW112f of the touch panel PC110 is operated, a speaker 140 sounds, and a display signal is transmitted to a compact portable information 22 at a dump track 20 side to notify the completion of a loading operation. Also, conveyance information including a conveyance vehicle identifier input from the touch panel PC110 and the type information of loading materials is transmitted from an information controller 130 to an operation management server 300. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an excavation / banking management information management apparatus in earth work in which a banking material is excavated by an excavator, the banking material is loaded and transported on a transport vehicle, and unloaded at a banking site.

  As a system for managing transport information of a transport vehicle, there is a banking management system described in Patent Document 1.

  This system attaches information transmission means to the transport vehicle, and installs reading means for reading the information stored in the information transfer means in a non-contact manner at the entrance gate on the embankment side, so that the transport vehicle passes through the entrance gate. The vehicle information, earth and sand information, etc. stored in the information transmission means at the cut side management office are read, the destination of the transport vehicle is determined based on the read information, and the determination result is displayed on the destination display device. As a result, it is possible to eliminate the traffic jam caused by the transport vehicle and to perform excavation and embankment management using the information.

JP 2000-31886 A

  However, the above prior art has the following problems.

  When the excavation / filling information is centrally managed by the construction management server, the construction management server grasps the transport information (number of the transport vehicle, type of sediment, etc.) of the earth excavated in the excavation section and loaded onto the transport vehicle (dump truck). There is a need.

  In the above prior art, when an information transmission means is attached to the transport vehicle, and a reading means for reading the information stored in the information transfer means in a non-contact manner is installed in the entrance gate on the embankment side, the transport vehicle passes through the entrance gate. In addition, the server side acquires the transportation information by reading the transportation information such as the vehicle information and the earth and sand information stored in the information transmission means at the cutting side (excavation section) management office. However, in such a configuration, it is necessary to mount information transmission means on all transport vehicles entering the cut side, which increases costs. In addition, it is necessary to educate all the transport vehicle drivers on how to use the information transmission means, which is difficult to manage.

  The object of the present invention is to solve the above-mentioned problems, reduce the cost for making the construction management server acquire transport information of transport vehicles, facilitate human resource education management, and improve work efficiency in the excavation section. It is to provide an excavation and embankment information management device that can improve.

  (1) In order to achieve the above-mentioned object, the present invention excavates the embankment material with an excavator in the excavation work area, loads the embankment material into the transport vehicle, transports it to the embankment work area, and loads the embankment into the transport vehicle. In the excavation / filling information management device for earth work in which materials are unloaded from the embankment work area and carried out, the transport information of the embankment material transmitted from the excavation work area is accumulated and managed as part of the excavation / filling information. A construction management server, an information processing device provided in the excavator, and capable of simultaneously performing a cue of completion of loading work on the transport vehicle and transmitting the embedding material transport information to the construction management server; Shall be provided.

  In this way, the excavator operating in the excavation zone can send information on the transportation of embankment materials to the construction management server, and by installing an information processing device, the excavator operating in the excavation zone will hardly be replaced. The number of installed information processing devices can be significantly reduced compared to the case where information processing devices are installed in all transport vehicles entering the work area, and the cost of allowing the construction management server to acquire transport information for transport vehicles. In addition to reducing exchanging machine exchanging and exchanging excavator operators, the number of workers who need to learn how to use information processing equipment can be greatly reduced. Education management becomes extremely easy.

  In addition to transmitting the transport information from the excavator instead of the transport vehicle to the construction management server, the excavator side can simultaneously signal the completion of the loading operation on the transport vehicle and transmit the transport information to the construction management server. Therefore, the work load of the operator of the excavator and the driver of the transport vehicle is reduced, and the work efficiency can be improved.

  (2) In the above (1), preferably, the information processing device is connected to the transporting vehicle when the input processing unit operated when the loading operation to the transporting vehicle is completed, and when the input processing unit is operated. An output means for signaling the completion of loading, and a control device for creating transport information of the embankment material and transmitting it to the management server when the input processing means is operated.

  As a result, the excavator can simultaneously signal the completion of the loading operation on the transport vehicle and transmit the transport information to the construction management server.

  (3) In the above (1), preferably, the control device loads at least the transport vehicle identifier for identifying the transport vehicle that transports the embankment material as the transport information of the embankment material, and the transport vehicle. Create and send transport information including the type of the fill material.

  Thereby, the embankment information including the transport vehicle identifier and the embankment material can be transmitted from the excavator to the construction management server.

  (4) Furthermore, in the above (1), more preferably, the control device, as the embankment material transport information, at least a transport vehicle identifier for identifying a transport vehicle of the embankment material and the embankment loaded on the transport vehicle. Transport information including the type of material, loading completion time and excavation position is created and transmitted.

  Thereby, the excavator can transmit the embankment information including the vehicle identifier, the embankment material, the loading completion time and the excavation position to the construction management server.

  (5) In the above (2), preferably, the input processing means is operated when a loading operation to the transporting vehicle is completed, a first operation unit for inputting an identifier of the transporting vehicle and a type of the loading material. And when the second operation unit is operated, the output unit is made to signal the completion of the loading operation on the transport vehicle, and the embedding material to the control device A processing unit for generating transport information including the identifier of the transport vehicle input by the first operation unit and the type of the loading material and transmitting the transport information to the management server.

  According to the excavation and embankment information management device of the present invention, by the information processing device provided in the excavator, it is possible to simultaneously signal the completion of the loading operation for the transport vehicle and the transmission of the transport information to the construction management server, The cost for causing the construction management server to acquire the transport information of the transport vehicle can be reduced, the human resource education management can be facilitated, and the work efficiency in the excavation section can be improved.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
<Overall configuration>
FIG. 1 is a diagram illustrating an overall outline of earth work for excavation / banking work and an overall configuration of an excavation / banking information management apparatus according to an embodiment of the present invention.

  In FIG. 1, a backhoe 10 as an excavator is provided in the excavation section 1, and the backhoe 10 excavates a material (earth and sand) to be filled, and loads the excavated earth and sand into a dump truck 20 as a transport vehicle. The dump truck 20 transports the loaded earth and sand to the embankment area 2 and unloads it to the embankment site. The material unloaded at the embankment site is leveled by a bulldozer 30 that is a leveling machine and compacted by a vibrating roller 40 that is a compacting machine. After that, the slope is shaped by the backhoe 50 and finished in a desired shape.

  The excavation / filling information management apparatus according to the present embodiment performs excavation / filling management in such earth work, and is mounted on the backhoe 10 of the excavation work area 1 and has a communication function (FIG. 2). The mobile phone 200 used as an input communication means by the driver of the dump truck 20 or the worker of the embankment area 2 in the embankment work area 2, the construction management server 300 installed in a remote area, and the earth work site It has a field office PC 400 installed at an appropriate place.

  In the excavation section 1, the control system 100 (see FIG. 2) provided in the backhoe 10 measures the position of the backhoe 10 based on GPS information from the GPS satellite 500, and uses the communication satellite 520 as information on the excavation position. To the construction management server 300. Further, the control system 100 uses the type of earth and sand loaded on the dump truck 20 as information on the type of embankment material, and uses the vehicle number of the transport vehicle (dump truck) loaded with the embankment material as information on the transport vehicle identifier. It is transmitted to the construction management server 300 via the communication satellite 520 together with the position information. These pieces of information (banking material transport information) are stored in the database of the construction management server 300.

  In the embankment zone 2, the information on the unloaded position and material is transmitted to the construction management server 300 by the operator using the mobile phone 200, and stored in the database of the construction management server 300. Further, the information on the position where the vibration roller 40 has been compacted and the information on the number of times of rolling are also transmitted to the construction management server 300 by the operator using the mobile phone 200 and stored in the database of the construction management server 300. The construction manager accesses the construction management server 1300 from the field office PC 400 via the Internet network 600 during work on the day or after the work is completed, and transports the transport vehicle loaded with cut (fill material). Information can be confirmed in real time.

  FIG. 2 is a diagram illustrating an overall configuration of the control system 100 provided in the backhoe 10. The control system 100 includes a touch panel computer (hereinafter referred to as a touch panel PC) 110 having means for inputting a bank material name (type of bank material) and a vehicle number of a transport vehicle (dump truck) loaded with the bank material, and a bank material. Based on the GPS receiver 120 that acquires information of the loaded position, the information controller 130 that collects and manages the information input from the touch panel PC 110 and the position information acquired by the GPS receiver 120, and the horn signal from the touch panel PC 110 A speaker 140 that informs the driver of the transport vehicle of the loading position and loading completion, and a satellite communication terminal 150 that transmits information collected by the information controller 130 to the construction management server 300 via the communication satellite 520. I have.

  Further, the control system 100 includes a wireless device 160 that transmits a display signal from the touch panel PC 110, and the display signal transmitted from the wireless device 160 is received by the wireless device 21 on the dump truck 20 side. The information is input to a small portable terminal (for example, PDA) 22 owned by the driver of the dump truck 20, and loading information (described later) is displayed on the display unit 22 a of the dump truck 20.

  FIG. 3 is a functional block showing details of the functions of the touch panel PC 110.

  In FIG. 3, the touch panel PC 110 includes a touch panel monitor 112 and a PC main body 114. The PC main body 114 includes a panel SW input I / F 114a that recognizes a signal input from the touch panel monitor 112, a CPU 114b that issues a program operation command, a display output I / F 114c that performs display output to the touch panel monitor 112, a program ROM 114d for storing information, storage means 114e such as a hard disk for storing information, RAM 114f for temporarily storing information being calculated by CPU 114b, audio output I / F 114g for outputting a horn signal to speaker 140, and information controller A communication output I / F 114h that transmits information to 130, and a wireless output I / F 114i that outputs a display signal to the wireless device 160.

  FIG. 4 is a diagram illustrating a screen configuration of the touch panel monitor 112. The touch panel monitor 112 has an information input screen. The information input screen includes a work day display area 112a for displaying a work day, and a vehicle number input numeric keypad 112b for inputting a vehicle number of a transport vehicle loaded with embankment material. A vehicle number display area 112c for displaying the vehicle number input by the vehicle number input numeric keypad 112b, a material selection pull-down 112d for selecting the material of the embankment material, a horn SW 112e for notifying the driver of the dump truck 20 of the loading position, A mail horn SW 112f that notifies the driver of the dump truck 20 of completion of loading and outputs information to the information controller 130 is provided.

  5 and 6 are diagrams showing examples of displays displayed on the portable terminal 22 owned by the driver of the dump truck 20. When the dump truck 20 moves, when the horn SW 112e of the touch panel monitor 112 is pressed to notify the driver of the dump truck 20 of the loading position, the speaker 140 sounds and at the same time, as shown in FIG. “Currently loading” is displayed on the portable terminal 22 owned by the driver. When the mail horn SW 112f of the touch panel monitor 112 is pressed to notify the driver of the dump truck 20 of completion of loading when the loading to the dump truck 20 is completed, information is output to the information controller 130 simultaneously with the sounding of the speaker 140, As shown in FIG. 6, “loading complete” is displayed on the portable terminal 22 owned by the driver of the dump truck 20.

  FIG. 7 is a diagram showing data items of transportation information that are collected in the information controller 130 of FIG. The data items collected in the information controller 130 include a header 130a, a data ID 130b, a machine type code 130c of the backhoe 10, a machine number 130d of the backhoe 10, and a switch press occurrence time when loading on the dump truck 20 is completed. 130e, latitude 130f and longitude 130g representing the position (loading position) of the backhoe 10, a fuel remaining amount 130h of the backhoe 10, a satellite terminal number 130i for identifying the GPS satellite 500 used for calculating the position of the backhoe 10, and a dump There are data items of the embankment material name 130j loaded on the truck 20 and the vehicle number 130k of the dump truck 20. Among these data items, the information of the embankment material name 130j loaded on the dump truck 20 and the vehicle number 130k of the dump truck 20 is information given from the touch panel PC 110 as described above.

  FIG. 8 shows a data format created when the data items shown in FIG. 7 are transmitted to the construction management server 300 of FIG. The data items in FIG. 7 are described in comma (,) delimiters.

  FIG. 9 is a diagram showing a screen for accessing the construction management server 300 of FIG. 1 from the field office PC 400 of FIG. 1 and searching for the transportation status. This search screen includes a date input field 400a for inputting a date to be confirmed, and a search execution button 400b having a function of executing date search.

  FIG. 10 is a screen for confirming the transport status of the transport vehicle on a certain date (February 7, 2005 in the illustrated example) accessed from the site office PC 400 of FIG. 1 and accessing the construction management server 300 of FIG. is there. This confirmation screen is loaded with a data number 400e representing the loading order, a loading time 400f representing the time when loading is completed, a loading position / latitude 400g and a loading position / longitude 400h representing the loading position. Loading material 400i representing the embankment material name, vehicle number 400j representing the vehicle number of the transport vehicle (dump truck) loaded with the embedding material, and unloading 400k representing whether the loaded embedding material has been unloaded to the embankment work area. indicate. In addition, it has a form print button 400m for instructing whether or not to print the illustrated confirmation screen as a form.

  In the above, the control system 100 is provided in the backhoe 10 that is an excavator, and can simultaneously signal the completion of the loading operation on the dump truck 20 that is a transport vehicle and transmit the transport information to the construction management server 300. An information processing apparatus is configured.

  The touch panel PC 110 constitutes an input processing means that is operated when the loading operation to the dump truck 20 is completed. The speaker 140 and the small portable terminal 22 are connected to the dump truck 20 when the input processing means 110 is operated. The information controller 130 constitutes a control device that creates transport information and transmits it to the construction management server 300 when the input processing means 110 is operated.

  Here, the control device (information controller 130), as the transport information, at least the transport vehicle identifier (vehicle number) for specifying the dump truck 20, the type of embankment material loaded on the dump truck 20, and the loading completion time And transport information including excavation position is created and transmitted.

  In addition, the vehicle number input numeric keypad 112b and the vehicle number display area 112c and the material selection pull-down 112d on the information input screen displayed on the patch panel monitor 112 of the touch panel PC 110 as input processing means include the identifier of the dump truck 20 and the type of loading material. The mail horn SW 112f on the information input screen constitutes a second operation unit that is operated when the loading operation to the dump truck 20 is completed, and the PC main body 110 of the touch panel PC 110 When the second operation unit (mail horn SW112f) is operated, the output means (the speaker 140 and the small portable terminal 22) is made to signal the completion of the loading operation on the dump truck 20, and the control device ( For the information controller 130) As the information, the transport information including the identifier of the transport vehicle and the type of the loaded material input by the first operation unit (the vehicle number input numeric keypad 112b and the vehicle number display area 112c and the material selection pull-down 112d) is created and transmitted to the construction management server 300. The processing unit to be configured is configured.

FIG. 11 is a flowchart showing an overall outline of a processing procedure for transmitting the transportation information from the control system 100 of the backhoe 10 of FIG. 1 to the construction management server 300, and FIG. 12 shows data in the processing procedure shown in FIG. It is a flowchart which shows the detail of a transmission process. FIG. 13 is a flowchart showing a processing procedure for displaying the transport information searched by accessing the construction management server 300 from the site office PC 400 and confirming the transport status. Hereinafter, the management procedure of the conveyance information by the excavation / banking information management apparatus of this Embodiment is demonstrated using these flowcharts.
(Overview)
11, the operator of the backhoe 10 in FIG. 1 activates the touch panel PC 110 and the information controller 130 in FIGS. 2 and 3 before starting the excavation work, and displays the information on the patch panel monitor 112 of the touch panel PC 110 in FIG. Display the information input screen. Next, in step S002, the material name to be filled today is selected from the material selection pull-down 112d on the information input screen of FIG. The material to be embanked is generally determined to be one type per day, but if the material to be embanked is changed, it can be handled by entering the changed material name from the material selection pull-down 112d on the information input screen of FIG. Is possible. Next, in step S003, the transport vehicle (dump truck) 20 of FIG. 1 arrives at the loading gate. Although it depends on the scale of construction, in a relatively medium-scale construction, about 8 transport vehicles are transported multiple times a day. Next, in step S004, the dump truck 20 moves at a low speed and reversely to a safe position where the backhoe 10 is easily loaded. If it is confirmed in step S004 that the transport vehicle has moved to the loading position, in step S005, the operator of the backhoe 10 presses the horn SW 112e of the touch panel PC 110 and plays the speaker 140 to give a stop signal. At the same time, in step S006, a display signal is output to the dump truck 20, and “currently loading” is displayed on the portable terminal 22 owned by the driver of the dump truck 20. At this time, instead of displaying on the mobile terminal, the driver of the dump truck 20 may be notified of the start of loading by vibration of the mobile terminal (or mobile phone). Next, in step S007, the operator of the backhoe 10 inputs the vehicle number of the transport vehicle that has arrived for the banking material transport using the touch panel PC110. Next, in step S008, the backhoe 10 performs cutting (excavation) for loading, and loads the embankment material into the dump truck 20. Next, when loading is completed in step S009, data transmission processing (details will be described later) is performed in step S010. Next, in step S011, the dump truck that has been loaded is exited, and in step S012, the excavation work is completed. Next, in step S013, the transport vehicle for the next transport enters. Steps S001 to S013 are repeated until the day's work is completed.
(Data transmission process)
Details of the data transmission processing of FIG. 11 will be described with reference to the flowchart of FIG.

In step S0101 of FIG. 12, the operator of the backhoe 10 lowers the mail horn SW 112f of the touch panel PC 110 and plays the speaker 140 to give a signal to the driver of the dump truck 20 that the loading has been completed. At the same time, in step S0102, the embankment material name input in steps S002 and S007 in FIG. 11 and the vehicle number of the transport vehicle (dump truck) are sent to the information controller 130 of the backhoe 10. The information controller 130 inputs this information, aggregates the information of the data items shown in FIG. 7 when the mail horn SW 112f is pressed, and creates transport information. In step S0103, a display signal is output to the dump truck 20, and "loading complete" is displayed on the portable terminal 22 owned by the driver of the dump truck 20. At this time, instead of displaying on the mobile terminal, the driver of the dump truck 20 may be notified of the completion of loading by vibration of the mobile terminal (or mobile phone). Next, in step S0104, the transport information collected and generated by the information controller 130 via satellite communication is transmitted to the construction management server 300 in FIG. In step S0105, the construction management server 300 in FIG. 1 receives the transportation information, and stores the transportation information received in step S0106 in the database.
(Transportation status confirmation process)
The outline of the conveyance status confirmation process by the field office PC 400 will be described with reference to FIG.

  In step S021 of FIG. 13, the prime contractor accesses the construction management server 300 of FIG. 1 from the field office PC 400 of FIG. Next, in step S022, the date on which the transport information is to be browsed is input on the transport status search screen of FIG. 9, and the search is executed. Next, in step S023, after the search is completed, the transport information of the specified date as shown in FIG. 10 is displayed on the screen. If necessary, the prime contractor can print and store the transport information as a paper form by clicking the form print button 400m.

  In the excavation / banking information management device of the present embodiment configured as described above, the backhoe 10 operating in the excavation work area 1 is hardly changed, so information is provided to all dump trucks 20 entering the excavation work area 1. The number of information processing devices (control system 100) installed can be greatly reduced compared to the case of installing a processing device, and the cost for causing the construction management server 300 to acquire the transport information of the dump truck 20 can be reduced. It becomes.

  Moreover, since not only the backhoe 10 is changed but also the operator of the backhoe 10 is not changed, the number of workers who need to educate how to use the control system 100 that is an information processing apparatus can be greatly reduced. Education management becomes extremely easy.

  Further, the transport information is transmitted from the backhoe 10 to the construction management server 300 instead of from the dump truck 20, and the backhoe 10 sends a signal of completion of the loading operation to the dump truck 20 and the transport information to the construction management server 300. Since it can be performed simultaneously, the work load of the operator of the backhoe 10 and the driver of the dump truck 20 is reduced, and the work efficiency can be improved.

  Further, by transmitting the information to the construction management server 300 and performing centralized management, the progress of the work can be managed in real time, and the work of creating the forms can be saved, leading to an improvement in work efficiency.

It is a figure which shows the whole outline | summary of the earth work which performs excavation and embankment work, and the whole structure of the excavation and embankment information management apparatus concerning one embodiment of this invention. It is a figure which shows the whole structure of the control system with which a backhoe is equipped. It is a functional block which shows the detail of the function of touch panel PC. It is a figure which shows the information input screen of a touchscreen monitor. It is a figure which shows an example of the display displayed on the portable terminal which the driver | operator of a dump truck owns when loading to a dump truck starts. It is a figure which shows an example of the display displayed on the portable terminal which the driver | operator of a dump truck has at the time of completion | finish of loading to a dump truck. It is a figure which shows the data item of the conveyance information collected by the information controller. It is a figure which shows the transmission format to a construction management server. It is a figure which shows the screen display which searches the conveyance condition of a conveyance vehicle. It is a figure which shows the screen display which confirms the conveyance condition of a conveyance vehicle. It is a flowchart which shows the whole process procedure which transmits conveyance information from the backhoe control system to a construction management server. 12 is a flowchart showing details of data transmission processing in the processing procedure shown in FIG. 11. It is a flowchart which shows the process sequence which displays the conveyance information which accessed and searched the construction management server from the field office PC, and confirms a conveyance condition.

Explanation of symbols

1 Excavation Zone 2 Embankment Zone 10 Backhoe (Excavator)
20 Dump truck (transportation vehicle)
21 wireless device 22 portable terminal 22a display unit 30 bulldozer 40 vibration roller 50 backhoe 100 control system 110 touch panel PC
112 Touch panel monitor 112a Work day display area 112b Vehicle number input numeric keypad 112c Vehicle number display area 112d Material selection pull-down 112e Horn SW
112f Mail horn SW
114 PC main body 114a Touch panel monitor 114b CPU
114c Display output I / F
114d ROM
114e Storage means 114f RAM
114g audio output I / F
114h Communication output I / F
114i wireless output I / F
120 GPS receiver 130 Information controller 140 Speaker 150 Satellite communication terminal 160 Radio 200 Mobile phone 300 Construction management server 400 Field office PC
400a Date input field 400b Search execution button 400e Data number 400f Loading time 400g Loading position / latitude 400h Loading position / longitude 400i Loading material (fill material)
400j Vehicle number (transportation vehicle identifier)
400k Unloading 400m Form printing button 500 GPS satellite 520 Communication satellite

Claims (5)

Digging work that excavates the embankment material with an excavator in the excavation area, loads the embankment material into a transport vehicle, transports it to the embankment work area, and unloads the embankment material loaded in the transport vehicle to the embankment work area. In excavation and embankment information management equipment in
A construction management server for accumulating and managing the conveyance information of the embankment material transmitted from the excavation area as part of the excavation and embankment information;
An information processing device provided in the excavator and comprising an information processing device capable of simultaneously performing a cue for completion of a loading operation on the transport vehicle and transmission of transport information of the embankment material to the construction management server. Excavation and embankment information management device. In the excavation / filling information management device according to claim 1,
The information processing apparatus includes:
Input processing means operated upon completion of the loading operation to the transport vehicle;
When the input processing means is operated, output means for signaling the completion of loading to the transport vehicle;
An excavation / banking information management apparatus, comprising: a control device that creates conveyance information of the banking material and transmits the information to the construction management server when the input processing means is operated. In the excavation / filling information management device according to claim 1,
The control device creates transport information including at least a transport vehicle identifier for identifying a transport vehicle that transports the embankment material and a type of the embankment material loaded on the transport vehicle as transport information of the embankment material. Excavation / banking information management device characterized by transmitting. In the excavation / filling information management device according to claim 1,
The control device includes transport information including at least a transport vehicle identifier for identifying a transport vehicle for the embankment material, a type of the embankment material loaded on the transport vehicle, a loading completion time, and an excavation position as transport information for the embankment material. Excavation and embankment information management device characterized by creating and transmitting In the excavation / filling information management device according to claim 2,
The input processing means includes: a first operation unit that inputs an identifier of the transport vehicle and a type of loading material; a second operation unit that is operated when loading work into the transport vehicle is completed; and the second operation unit is operated by the second operation unit. When it is done, the output vehicle causes the output means to signal the completion of the loading operation for the transport vehicle, and the control device inputs to the control device the transport information of the embankment material by the first operating unit. An excavation / banking information management device, comprising: a processing unit that creates transport information including an identifier of the material and a type of loading material and transmits the transport information to the construction management server.

Images