Work machines and portable terminal devices for work machines

Abstract

To provide a work machine that can reduce the effort involved in transmitting payload information from the operator of the work machine to the driver of the transport vehicle. [Solution] The work machine 100 comprises a lower traveling body 1, an upper rotating body 3 rotatably mounted on the lower traveling body 1, an attachment AT attached to the upper rotating body 3, an information acquisition device IAD that uses the attachment AT to acquire payload information, which is information regarding the weight of the goods loaded on the cargo bed of the transport vehicle 200, and a wireless communication device 50 that transmits the payload information to an operator's portable terminal device SP1 capable of wireless communication with the transport vehicle 200.

Description

Technical Field

[0006] , , , ,

[0001] The present disclosure relates to a work machine and a portable terminal device for a work machine.

Background Art

[0002] Conventionally, an excavator equipped with a display device that displays payload information, which is information regarding the weight of an object loaded on the loading platform of a transport vehicle such as a dump truck, is known (see Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In such an excavator, a printer for printing payload information may be provided inside the cab. This is to enable the operator of the excavator to hand over the paper (slip) on which the payload information is printed to the driver of the transport vehicle. However, this method is not efficient because it takes time to print and hand over the slip.

[0005] Therefore, it is desirable to reduce the labor involved in transmitting payload information from the operator of a work machine such as an excavator to the driver of a transport vehicle.

Means for Solving the Problems

[0006] The work machine according to the embodiment of the present disclosure comprises a lower traveling body, an upper rotating body rotatably mounted on the lower traveling body, an attachment attached to the upper rotating body, an information acquisition device that acquires payload information, which is information relating to the weight of an object loaded on the cargo bed of a transport vehicle, using the attachment, and a communication device that transmits the payload information to a portable terminal device capable of wireless communication with the transport vehicle. [Effects of the Invention]

[0007] The aforementioned work machines can reduce the effort involved in transmitting payload information from the work machine operator to the transport vehicle driver. [Brief explanation of the drawing]

[0008] [Figure 1] This is a schematic diagram showing an example configuration of a management system for a work machine according to an embodiment of this disclosure. [Figure 2] Figure 1 is a side view of the work machine shown. [Figure 3] This figure shows an example of the configuration of the drive control system for the work machine shown in Figure 1. [Figure 4] This block diagram shows an example configuration of a payload information management system. [Figure 5] This is a flowchart illustrating an example of the flow of payload information. [Figure 6] This figure shows an example of the configuration of the image display unit and the operation unit of a display device. [Figure 7] This figure shows an example of the screen display shown in the image display section. [Figure 8] This figure shows an example of the screen display on the display unit of the operator's portable terminal device. [Figure 9] This figure shows another example of the screen display on the operator's portable terminal device. [Figure 10] This figure shows an example of the screen display on the display unit of a driver's portable terminal device. [Figure 11] This figure shows yet another example of the display screen shown on the display unit of the operator's portable terminal device. [Modes for carrying out the invention]

[0009] Embodiments of the present invention will be described below with reference to the drawings. Furthermore, the embodiments described below are illustrative and not limiting to the invention, and not all features or combinations thereof described in the embodiments are necessarily essential to the invention. In addition, identical or corresponding components in each drawing are denoted by the same or corresponding reference numerals, and their descriptions may be omitted.

[0010] First, with reference to Figure 1, an overview of the management system SYS for work machines according to the embodiment of this disclosure will be described. Figure 1 is a schematic diagram showing an example of the configuration of the management system SYS.

[0011] As shown in Figure 1, the management system SYS includes a work machine 100, a transport vehicle 200, and a management center 300. The work machine 100 and the management center 300 are connected to each other so that data can be sent and received via a communication line NW. In the illustrated example, the work machine 100 is configured to send and receive data to and from the management center 300 via the communication line NW.

[0012] Specifically, the work machine 100 can transmit payload information, which is information regarding the weight of the goods loaded onto the cargo bed of a transport vehicle 200 such as a dump truck, to the management center 300. In the illustrated example, the payload information is acquired (generated) based on the output of the information acquisition device IAD attached to the work machine 100. This allows the administrator at the management center 300 to confirm the contents of the payload information from the work machine 100. The information acquisition device IAD that acquires the payload information is not limited to a device attached to the work machine 100; it may also be a device attached to an aircraft such as a drone flying over the work site, a device such as a fixed-point camera installed at the work site, or an imaging device that can be carried by a worker at the work site.

[0013] The work machine 100 included in the management system SYS may be one unit or multiple units. This allows the management system SYS to manage payload information for each of the multiple work machines 100. Furthermore, the management center 300 included in the management system SYS may be one unit or multiple units.

[0014] In this embodiment, the work machine 100 has a cabin 10 which serves as a cockpit, and a wireless communication device 50 and a display device 40 are provided inside the cabin 10. The wireless communication device 50 is configured to communicate with an operator's mobile terminal device SP1, such as a smartphone, carried by an operator OP seated in the cockpit located inside the cabin 10. In the illustrated example, communication between the wireless communication device 50 and the operator's mobile terminal device SP1 is achieved by direct wireless communication. "Direct wireless communication" between the wireless communication device 50 and the operator's mobile terminal device SP1 refers to wireless communication that is conducted directly between the wireless communication device 50 and the operator's mobile terminal device SP1 without going through a base station such as a communication satellite or ground base station. However, "direct wireless communication" between the wireless communication device 50 and the operator's mobile terminal device SP1 includes wireless communication conducted via a relay device located between the wireless communication device 50 and the operator's mobile terminal device SP1. The same applies to direct wireless communication between the operator's mobile terminal device SP1 and a driver's mobile terminal device SP2. Communication between the wireless communication device 50 and the operator's mobile terminal device SP1 may also be achieved by wired communication. In this case, the operator's portable terminal device SP1 may be held by a holding member such as a cradle provided inside the cabin 10. The display device 40 is also installed in a position where it can be seen by the operator OP seated in the driver's seat inside the cabin 10.

[0015] Also, in this embodiment, the cabin 10 is configured to be able to directly perform wireless communication between the driver's portable terminal device SP2 such as a smartphone carried by the driver DV sitting on the driver's seat provided in the cab 210 of the transport vehicle 200 and the operator's portable terminal device SP1. Note that the operator's portable terminal device SP1 may be configured to be able to directly perform wireless communication with the in-vehicle terminal device mounted on the transport vehicle 200. In this case, the in-vehicle terminal device may be configured to be able to directly perform wireless communication or wired communication with the driver's portable terminal device SP2. Further, the driver's portable terminal device SP2 may be configured to be able to directly perform wireless communication with the wireless communication device 50.

[0016] In the illustrated example, the wireless communication device 50 is configured to be able to realize the exchange of information via Bluetooth (registered trademark) between the wireless communication device 50 and the operator's portable terminal device SP1. However, the wireless communication device 50 may be configured to be able to realize the exchange of information via a wireless LAN such as Wi-Fi (registered trademark) between the wireless communication device 50 and the operator's portable terminal device SP1. Further, the wireless communication device 50 may be configured to be able to perform wired communication between the wireless communication device 50 and the operator's portable terminal device SP1.

[0017] Also, in the illustrated example, the direct wireless communication performed between the mobile terminal device SP1 for the operator and the mobile terminal device SP2 for the driver is realized using Bluetooth (registered trademark). Specifically, this direct wireless communication is established without pairing. "Pairing" is an example of a preliminary operation for establishing direct wireless communication and means an operation that permits communication with each other in both of a pair of devices corresponding to Bluetooth (registered trademark). For example, when both the mobile terminal device SP1 for the operator and the mobile terminal device SP2 for the driver are iPhones (registered trademark), this direct wireless communication is realized using AirDrop (registered trademark), which is software for sharing data. Alternatively, when both the mobile terminal device SP1 for the operator and the mobile terminal device SP2 for the driver are smartphones equipped with Android (registered trademark), this direct wireless communication is realized using Quick Share, which is software for sharing data.

[0018] However, the direct wireless communication performed between the mobile terminal device SP1 for the operator and the mobile terminal device SP2 for the driver may be established by performing a preliminary operation such as pairing. In this case, this direct wireless communication may be realized using Wi-Fi (registered trademark). Also, the wireless communication between the mobile terminal device SP1 for the operator and the mobile terminal device SP2 for the driver may be realized using a mobile phone communication network or a satellite communication network or the like. In this case, the exchange of payload information between the mobile terminal device SP1 for the operator and the mobile terminal device SP2 for the driver may be realized using e-mail.

[0019] Next, with reference to Figure 2, the details of the work machine 100 will be described. Figure 2 is a side view of an example of the work machine 100, which is a shovel (excavator). The work machine 100 may also be a crane or a forklift. In the illustrated example, the upper slewing body 3 is rotatably mounted on the lower traveling body 1 of the work machine 100 via a slewing mechanism 2. A boom 4 is attached to the upper slewing body 3, an arm 5 is attached to the tip of the boom 4, and a bucket 6 is attached to the tip of the arm 5 as an end attachment. The end attachment may be a breaker or a grapple, etc.

[0020] The boom 4, arm 5, and bucket 6 each constitute an excavation attachment, which is an example of an attachment AT, and are driven by the boom cylinder 7, arm cylinder 8, and bucket cylinder 9, which are hydraulic cylinders, which are an example of a work actuator WA. A boom angle sensor S1 is attached to the boom 4, an arm angle sensor S2 is attached to the arm 5, and a bucket angle sensor S3 is attached to the bucket 6.

[0021] The boom angle sensor S1 detects the rotation angle of the boom 4. In this embodiment, the boom angle sensor S1 is an acceleration sensor and can detect the boom angle, which is the rotation angle of the boom 4 relative to the upper slewing body 3. The boom angle is smallest when the boom 4 is lowered to its lowest position, and increases as the boom 4 is raised.

[0022] The arm angle sensor S2 detects the rotation angle of the arm 5. In this embodiment, the arm angle sensor S2 is an acceleration sensor and can detect the arm angle, which is the rotation angle of the arm 5 relative to the boom 4. The arm angle is smallest when the arm 5 is closed to its shortest extent, and increases as the arm 5 is opened.

[0023] The bucket angle sensor S3 detects the rotation angle of the bucket 6. In this embodiment, the bucket angle sensor S3 is an acceleration sensor and can detect the bucket angle, which is the rotation angle of the bucket 6 relative to the arm 5. The bucket angle is smallest when the bucket 6 is closed to its fullest extent, and increases as the bucket 6 is opened.

[0024] The boom angle sensor S1, arm angle sensor S2, and bucket angle sensor S3 may be a potentiometer using a variable resistor, a stroke sensor that detects the stroke amount of the corresponding hydraulic cylinder, or a rotary encoder that detects the rotation angle around a connecting pin. The boom angle sensor S1, arm angle sensor S2, and bucket angle sensor S3 constitute an attitude sensor AS that detects the attitude of the excavation attachment.

[0025] The boom bottom pressure sensor S7B is a pressure sensor for detecting the boom bottom pressure, which is the pressure of the hydraulic fluid in the bottom oil chamber of the boom cylinder 7. The boom rod pressure sensor S7R is a pressure sensor for detecting the boom rod pressure, which is the pressure of the hydraulic fluid in the rod oil chamber of the boom cylinder 7. The arm bottom pressure sensor S8B is a pressure sensor for detecting the arm bottom pressure, which is the pressure of the hydraulic fluid in the bottom oil chamber of the arm cylinder 8. The arm rod pressure sensor S8R is a pressure sensor for detecting the arm rod pressure, which is the pressure of the hydraulic fluid in the rod oil chamber of the arm cylinder 8. The bucket bottom pressure sensor S9B is a pressure sensor for detecting the bucket bottom pressure, which is the pressure of the hydraulic fluid in the bottom oil chamber of the bucket cylinder 9. The bucket rod pressure sensor S9R is a pressure sensor for detecting the bucket rod pressure, which is the pressure of the hydraulic fluid in the rod oil chamber of the bucket cylinder 9. In the illustrated example, the boom bottom pressure sensor S7B is provided in the oil passage connecting the bottom oil chamber of the boom cylinder 7 and the control valve unit 17, but it may also be provided in the boom cylinder 7. The same applies to the boom rod pressure sensor S7R, arm bottom pressure sensor S8B, arm rod pressure sensor S8R, bucket bottom pressure sensor S9B, and bucket rod pressure sensor S9R.

[0026] The upper rotating body 3 is equipped with a cabin 10, engine 11, positioning device PD, aircraft tilt sensor S4, rotation angular velocity sensor S5, spatial recognition device S6, rotation actuator SA, and communication device T1, among others.

[0027] The cabin 10 houses a shovel controller 30 and a wireless communication device 50. The cabin 10 also houses a driver's seat, control devices 26, and a display device 40. The shovel controller 30 is a control device that performs various calculations. The shovel controller 30 is, for example, located in the cabin 10 and controls the drive of the work machine 100. The functions of the shovel controller 30 may be realized by arbitrary hardware, software, or a combination thereof. For example, the shovel controller 30 is composed of a microcomputer including a CPU, memory (volatile storage device) such as RAM, a non-volatile storage device such as ROM, and various input / output interface devices. The shovel controller 30 may, for example, realize various functions by executing various programs installed in the non-volatile storage device on the CPU.

[0028] Engine 11 is an example of a power source for the work machine 100. In the illustrated example, engine 11 is a diesel engine and is mounted at the rear of the upper slewing body 3. The output shaft of engine 11 is connected to the input shafts of the main pump 14 and the pilot pump 15, respectively. Specifically, engine 11 rotates at a constant speed at a preset target rotational speed under direct or indirect control by the shovel controller 30, driving the main pump 14 and the pilot pump 15, etc. The power source for the work machine 100 may also be a battery-powered electric motor. That is, the work machine 100 may be a hybrid work machine or an electric work machine.

[0029] The machine tilt sensor S4 is configured to detect the tilt of the upper rotating body 3 with respect to a predetermined plane. In the illustrated example, the machine tilt sensor S4 is an acceleration sensor that detects the tilt angle of the upper rotating body 3 around the longitudinal axis and the tilt angle around the left-right axis with respect to the horizontal plane. The longitudinal axis and left-right axis of the upper rotating body 3 are, for example, orthogonal to each other and pass through a central point which is a point on the rotation axis PV of the work machine 100.

[0030] The rotational angular velocity sensor S5 is configured to detect the rotational angular velocity of the upper rotating body 3. In this embodiment, the rotational angular velocity sensor S5 is a gyro sensor. The rotational angular velocity sensor S5 may also be a resolver or a rotary encoder, etc. The rotational angular velocity sensor S5 may also be configured to detect the rotational speed. The rotational speed may also be calculated from the rotational angular velocity.

[0031] The spatial recognition device S6 is configured to acquire images of the area surrounding the work machine 100. In the illustrated example, the spatial recognition device S6 includes a front camera S6F that captures the space in front of the work machine 100, a left camera S6L that captures the space to the left of the work machine 100, a right camera S6R that captures the space to the right of the work machine 100, and a rear camera S6B that captures the space behind the work machine 100.

[0032] The spatial recognition device S6 may be, for example, a monocular camera having an image sensor such as a CCD or CMOS, and the captured image may be output to the display device 40.

[0033] The front camera S6F is mounted, for example, on the roof of cabin 10. The left camera S6L is mounted on the upper left end of the upper surface of the upper rotating body 3. The right camera S6R is mounted on the upper right end of the upper surface of the upper rotating body 3. The rear camera S6B is mounted on the upper rear end of the upper surface of the upper rotating body 3.

[0034] The spatial recognition device S6, located at the position described above, can photograph objects in the vicinity of the work machine 100. The spatial recognition device S6 may be a camera capable of recognizing the distance to the object being photographed (for example, an RGBD camera or a stereo camera). Alternatively, the spatial recognition device S6 may be a LiDAR.

[0035] The positioning device PD is configured to acquire information regarding the position of the work machine 100. In this embodiment, the positioning device PD is configured to measure the position and orientation of the work machine 100 in a reference coordinate system. Specifically, the positioning device PD is a GNSS (Global Navigation Satellite System) receiver incorporating an electronic compass, and measures the latitude, longitude, and altitude of the current position of the work machine 100, as well as the orientation of the work machine 100 (upper rotating body 3). In the illustrated example, the reference coordinate system is the World Geodetic System. The World Geodetic System is a three-dimensional orthogonal XYZ coordinate system with its origin at the center of gravity of the Earth, the X-axis pointing in the direction of the intersection of the Greenwich Meridian and the equator, the Y-axis pointing in the direction of 90 degrees east longitude, and the Z-axis pointing in the direction of the North Pole.

[0036] The communication device T1 is configured to control communication with equipment located outside the work machine 100. In this embodiment, the communication device T1 is configured to control communication between the communication device T1 and equipment located outside the work machine 100 via a wireless communication network. The communication device T1 may include, for example, a mobile communication module compatible with mobile communication standards such as LTE (Long Term Evolution), 4G (4th Generation), or 5G (5th Generation), or a satellite communication module for connecting to a satellite communication network.

[0037] Furthermore, the communication device T1 may be configured to control, for example, wireless communication between an external GNSS surveying system and the work machine 100.

[0038] Figure 3 shows an example of the drive control system configuration for the work machine 100 shown in Figure 2. In Figure 3, the mechanical power transmission system is shown by double lines, the hydraulic fluid lines by thick solid lines, the pilot lines by dashed lines, and the electric drive and control system by dotted lines.

[0039] The drive system of the work machine 100 according to this embodiment includes an engine 11, a regulator 13, a main pump 14, and a control valve unit 17. The hydraulic drive system of the work machine 100 includes a travel hydraulic motor (left travel hydraulic motor 1L and right travel hydraulic motor 1R) as a travel actuator DA, a slewing hydraulic motor 2A as a slewing actuator SA, and a boom cylinder 7, an arm cylinder 8, and a bucket cylinder 9 as work actuators WA.

[0040] The regulator 13 is configured to control the discharge rate of the main pump 14. In the illustrated example, the regulator 13 adjusts the angle (tilt angle) of the swash plate of the main pump 14 in response to a control command from the shovel controller 30.

[0041] The main pump 14 is mounted on the upper slewing body 3, similar to the engine 11, and supplies hydraulic fluid to the control valve unit 17 through the hydraulic fluid line. The main pump 14 is also driven by the engine 11. In the illustrated example, the main pump 14 is a variable displacement hydraulic pump, and under the control of the shovel controller 30, the piston stroke length is adjusted by adjusting the tilt angle of the swash plate by the regulator 13, thereby controlling the discharge flow rate (discharge pressure).

[0042] The control valve unit 17 is a hydraulic control device that controls the hydraulic system in the work machine 100. In the illustrated example, the control valve unit 17 includes control valves 171 to 176 as spool valves. The control valve unit 17 is configured to selectively supply hydraulic fluid discharged by the main pump 14 to one or more hydraulic actuators through the control valves 171 to 176. The control valves 171 to 176 control, for example, the flow rate of hydraulic fluid flowing from the main pump 14 to the hydraulic actuators and the flow rate of hydraulic fluid flowing from the hydraulic actuators to the hydraulic fluid tank. The hydraulic actuators include a boom cylinder 7, an arm cylinder 8, a bucket cylinder 9, a left-travel hydraulic motor 1L, a right-travel hydraulic motor 1R, and a slewing hydraulic motor 2A. More specifically, control valve 171 corresponds to the left-travel hydraulic motor 1L, control valve 172 corresponds to the right-travel hydraulic motor 1R, and control valve 173 corresponds to the slewing hydraulic motor 2A. Furthermore, control valve 174 corresponds to bucket cylinder 9, control valve 175 corresponds to boom cylinder 7, and control valve 176 corresponds to arm cylinder 8.

[0043] The pilot pump 15 is an example of a pilot pressure generating device and is configured to supply hydraulic fluid to hydraulic control equipment via a pilot line. In this embodiment, the pilot pump 15 is a fixed-displacement hydraulic pump. However, the pilot pressure generating device may be implemented by the main pump 14. That is, the main pump 14 may have the function of supplying hydraulic fluid to the control valve unit 17 via a hydraulic fluid line, as well as the function of supplying hydraulic fluid to various hydraulic control equipment via a pilot line. In this case, the pilot pump 15 may be omitted.

[0044] The operating device 26 is a device used by the operator OP inside the cabin 10 to operate the actuators. The actuators include at least one of a hydraulic actuator and an electric actuator. In the illustrated example, the operating device 26 includes an operating lever, a travel lever, and a travel pedal. The operating levers include a left operating lever for slewing and arm operation, and a right operating lever for boom and bucket operation.

[0045] The discharge pressure sensor 28 is configured to detect the discharge pressure of the main pump 14. In this embodiment, the discharge pressure sensor 28 outputs the detected value to the shovel controller 30.

[0046] The operation sensor 29 is configured to detect the operation content of operator OP using the operation device 26. In this embodiment, the operation sensor 29 detects the operating direction and amount of operation of the operation device 26 corresponding to each actuator and outputs the detected values ​​to the shovel controller 30. Specifically, the operation sensor 29 is, for example, a tilt sensor that detects the tilt angle of the operating lever, or an angle sensor that detects the oscillation angle of the operating lever around the pivot axis. The operation sensor 29 may also be composed of other sensors such as a pressure sensor, current sensor, voltage sensor, or distance sensor. In the illustrated example, the shovel controller 30 controls the opening area of ​​the solenoid valve 31 according to the output of the operation sensor 29. The shovel controller 30 then applies the pressure from the hydraulic fluid discharged by the pilot pump 15 to the pilot port of the corresponding control valve in the control valve unit 17. The hydraulic fluid pressure (pilot pressure) acting on each pilot port is, in principle, the pressure corresponding to the operating direction and amount of operation of the operation device 26 corresponding to each hydraulic actuator. Thus, the operating device 26 is configured to apply the pressure from the hydraulic fluid discharged by the pilot pump 15 to the pilot port of the corresponding control valve in the control valve unit 17.

[0047] The solenoid valve 31, which functions as a control valve for machine control, is located in an oil passage connecting the pilot pump 15 and the pilot port of the control valve in the control valve unit 17, and is configured to change the flow area of ​​the oil passage. In the illustrated example, the solenoid valve 31 operates in response to control commands output by the shovel controller 30. Therefore, the shovel controller 30 can apply the pressure of the hydraulic fluid discharged by the pilot pump 15 to the pilot port of the control valve in the control valve unit 17 via the solenoid valve 31, regardless of the operation of the operating device 26 by the operator OP, thereby achieving the desired pilot pressure. In the illustrated example, the shovel controller 30 is configured to provide feedback control of the pilot pressure based on the output of the pilot pressure sensor 32.

[0048] This configuration allows the excavator controller 30 to operate the hydraulic actuator corresponding to a specific operating device 26 not only when an operation is being performed on that specific operating device 26, but also when no operation is being performed on that specific operating device 26.

[0049] Furthermore, the shovel controller 30 is configured to perform various functions in addition to controlling the pilot pressure. For example, the shovel controller 30 can set a target rotational speed based on a work mode that is pre-set by a predetermined operation such as that of an operator OP, and perform drive control to keep the engine 11 rotating at a constant speed.

[0050] Furthermore, the shovel controller 30 can, for example, output control commands to the regulator 13 as needed, thereby changing the discharge rate of the main pump 14.

[0051] Furthermore, the shovel controller 30 can perform control related to a machine guidance function that guides the manual operation of the work machine 100 by the operator OP through the operating device 26. In addition, the shovel controller 30 can perform control related to a machine control function that automatically assists the manual operation of the work machine 100 by the operator OP through the operating device 26.

[0052] Furthermore, the shovel controller 30 can acquire payload information based on the output of the information acquisition device IAD. In the illustrated example, the information acquisition device IAD includes an attitude sensor AS and a cylinder pressure sensor CPS. The attitude sensor AS includes a boom angle sensor S1, an arm angle sensor S2, and a bucket angle sensor S3. The cylinder pressure sensor CPS includes a boom cylinder pressure sensor S7, an arm cylinder pressure sensor S8, and a bucket cylinder pressure sensor S9. The boom cylinder pressure sensor S7 includes a boom bottom pressure sensor S7B and a boom rod pressure sensor S7R, the arm cylinder pressure sensor S8 includes an arm bottom pressure sensor S8B and an arm rod pressure sensor S8R, and the bucket cylinder pressure sensor S9 includes a bucket bottom pressure sensor S9B and a bucket rod pressure sensor S9R. The payload information includes, for example, the weight of the soil taken into the bucket 6.

[0053] Furthermore, some of the functions of the shovel controller 30 may be implemented by other controllers (control devices). In other words, the functions of the shovel controller 30 may be implemented by multiple controllers. For example, the machine guidance function and the machine control function may be implemented by a dedicated controller (control device). The same applies to the function of calculating payload information.

[0054] Next, referring to Figure 4, we will explain the payload information management system PS, which manages payload information. Figure 4 is a block diagram showing an example configuration of the payload information management system PS.

[0055] In the illustrated example, the payload information management system PS comprises a shovel controller 30, a wireless communication device 50, an information acquisition device IAD, a display device 40, and a communication device T1. The information acquisition device IAD includes an operation sensor 29, a posture sensor AS, and a cylinder pressure sensor CPS. The shovel controller 30, the display device 40, the wireless communication device 50, and the communication device T1 are all connected via a CAN (Controller Area Network).

[0056] The display device 40 is configured to display various types of information. In this embodiment, the display device 40 is configured to display one or more captured images captured by the imaging device, which acts as the spatial recognition device S6. The display device 40 operates by receiving power from a storage battery. The display device 40 includes a control unit 40a, an image display unit 41, and an operation unit 42.

[0057] The control unit 40a controls the image displayed on the image display unit 41. In this embodiment, the control unit 40a is composed of a computer equipped with a CPU, RAM, NVRAM, ROM, and an input / output interface. In this case, the control unit 40a reads software (programs) corresponding to each functional element from ROM and loads them into RAM, and causes the CPU to execute the corresponding processing. However, each functional element may be composed of hardware, or a combination of software and hardware. Furthermore, the image displayed on the image display unit 41 may be controlled by the shovel controller 30 or the spatial recognition device S6.

[0058] The image display unit 41 displays a home screen that includes an image captured by at least one of the imaging devices acting as the spatial recognition device S6. The image captured may be, for example, a rear image captured by the rear camera S6B, a left image captured by the left camera S6L, and a right image captured by the right camera S6R. Alternatively, the image captured may be a top-down view image created by combining images captured by the rear camera S6B, the left camera S6L, and the right camera S6R, respectively. Furthermore, the image captured may be two or more images selected from the rear image, left image, right image, and top-down view image. The home screen includes status information indicating the status of the work machine 100, or setting information indicating the contents of various settings for the work machine 100.

[0059] The operation unit 42 is a switch panel including hardware switches. The operation unit 42 may also be a touch panel. In the illustrated example, the operation unit 42 is located below the image display unit 41 and includes a push switch 42a for changing (switching) the screen or image displayed by the image display unit 41. However, the location of the operation unit 42 is not limited to the example described above; for example, it may be located on the operating lever, or on the left or right console on either side of the driver's seat. In addition to the operation unit 42 provided on the display device 40, a driver's seat-side operation unit having the same function as the operation unit 42 may be located on at least one of the operating lever, the left console, and the right console.

[0060] Here, referring to Figure 5, the flow of payload information exchanged between the shovel controller 30, wireless communication device 50, display device 40, management center 300, operator's mobile terminal device SP1, driver's mobile terminal device SP2, and communication device T1 will be explained. Figure 5 is a flowchart showing an example of the payload information flow.

[0061] First, the operator OP of the work machine 100 enters the cabin 10 of the work machine 100 and starts a dedicated application (software), the payload information management application, on the operator's mobile terminal device SP1. This payload information management application is software that receives payload information from the work machine 100, generates an E-ticket based on the received payload information, and sends the generated E-ticket to the driver's mobile terminal device SP2.

[0062] An e-ticket is an electronic document (electronic slip) transmitted from the operator OP of the work machine 100 to the driver DV of the transport vehicle 200. In the illustrated example, the e-ticket is generated based on payload information. Specifically, the e-ticket is generated as PDF data and is designed to be uneditable. However, the e-ticket may also be in text format.

[0063] In the illustrated example, the operator OP performs pairing using a passkey when establishing a Bluetooth® connection between the operator's portable terminal device SP1 and the wireless communication device 50 for the first time. For subsequent connections, the operator OP can use direct wireless communication between the operator's portable terminal device SP1 and the wireless communication device 50 simply by bringing the operator's portable terminal device SP1 into the cabin 10, without having to enter a passkey.

[0064] When the payload information management application is launched, the operator's mobile terminal device SP1 sends a connection request signal to the wireless communication device 50. Upon receiving the connection request signal, the wireless communication device 50 sends machine number information to the operator's mobile terminal device SP1. The machine number information is information about the machine number of the work machine 100 on which the wireless communication device 50 is installed, and is pre-stored in the shovel controller 30, and includes a predetermined number of characters in the machine number. The shovel controller 30 repeatedly sends the machine number information to the wireless communication device 50 at predetermined intervals. Therefore, the wireless communication device 50 typically receives the machine number information from the shovel controller 30 before receiving the connection request signal.

[0065] Subsequently, when the loading operation by the work machine 100 is completed and the operator OP operates the push switch corresponding to the loading completion button image on the screen displayed on the display device 40, the display device 40 transmits a payload information request signal to the shovel controller 30.

[0066] Subsequently, upon receiving the payload information request signal, the shovel controller 30 transmits the untransmitted payload information as the current payload information to the wireless communication device 50. Upon receiving the current payload information, the wireless communication device 50 forwards it to the operator's portable terminal device SP1. The current payload information refers to the payload information generated by the shovel controller 30 based on information acquired after the previous payload information transmission (information from the information acquisition device IAD), or the initial payload information if no previous payload information exists.

[0067] Subsequently, the operator's portable terminal device SP1, upon receiving the payload information, displays the payload information on its display unit (touch panel). At this stage, the operator OP can generate an e-ticket by touching the display unit of the operator's portable terminal device SP1 to add various information to the payload information.

[0068] Subsequently, the operator OP transmits the generated e-ticket to the driver's mobile terminal SP2 by touching the portion of the display on the operator's mobile terminal SP1 that corresponds to the shared button image.

[0069] The driver's handheld terminal device SP2, upon receiving the e-ticket, can display the e-ticket on its display unit (touch panel). Therefore, the driver DV of the transport vehicle 200 can easily check the contents of the payload information regarding the goods loaded onto the cargo bed of the transport vehicle 200 that he is driving on the display unit of the driver's handheld terminal device SP2.

[0070] Next, an example of the configuration of the image display unit 41 and the operation unit 42 of the display device 40 will be described with reference to Figure 6. Figure 6 is a diagram showing an example of the configuration of the image display unit 41 and the operation unit 42 of the display device 40. In the example shown in Figure 6, the image display unit 41 shows a home screen that includes the rightward image RG, the rearward image BG, and the overhead image TG captured by the imaging device, which is the spatial recognition device S6, as the screen displayed before the push switch 42a of the operation unit 42 is operated. The home screen is a screen that is displayed while the work machine 100 is in operation.

[0071] The image display unit 41 displays a different screen when a predetermined push switch 42a on the operation unit 42 is operated while the home screen is being displayed. For example, the image display unit 41 displays different information in the area where the overhead image TG was displayed, without changing the size of the right image RG and the rear image BG before and after the push switch 42a on the operation unit 42 is operated. Specifically, the image display unit 41 switches the currently displayed overhead image TG to an information image (menu display subscreen) such as a status display image (status display subscreen) showing the status of the work machine 100, or a settings display image (settings display subscreen) showing various settings of the work machine 100, which corresponds to the predetermined push switch 42a.

[0072] First, the image display unit 41 will be described. As shown in Figure 6, the image display unit 41 includes a date and time display area 41a, a driving mode display area 41b, an attachment display area 41c, a fuel consumption display area 41d, an engine control status display area 41e, an engine operating time display area 41f, a coolant temperature display area 41g, a fuel level display area 41h, a rotation speed level display area 41i, a urea solution level display area 41j, a hydraulic oil temperature display area 41k, an air conditioner operation status display area 41m, an image display area 41n, and a switch image display area 41p.

[0073] The driving mode display area 41b, attachment display area 41c, engine control status display area 41e, rotation speed level display area 41i, and air conditioner operation status display area 41m are areas that display setting status information, which is information related to the setting status of the work machine 100. The fuel consumption display area 41d, engine operating time display area 41f, coolant temperature display area 41g, fuel level display area 41h, urea solution level display area 41j, and hydraulic oil temperature display area 41k are areas that display operating status information, which is information related to the operating status of the work machine 100.

[0074] Specifically, the date and time display area 41a is an area that displays the current date and time. The driving mode display area 41b is an area that displays the current driving mode. The attachment display area 41c is an area that displays an image representing the attachment currently installed. The fuel consumption display area 41d is an area that displays fuel consumption information calculated by the shovel controller 30. The fuel consumption display area 41d includes an average fuel consumption display area 41d1 that displays lifetime average fuel consumption or section average fuel consumption, and an instantaneous fuel consumption display area 41d2 that displays instantaneous fuel consumption.

[0075] The engine control status display area 41e is an area that displays the control status of the engine 11. The engine operating time display area 41f is an area that displays the cumulative operating time of the engine 11. The coolant temperature display area 41g is an area that displays the current temperature status of the engine coolant. The fuel level display area 41h is an area that displays the remaining amount of fuel stored in the fuel tank. The rotation speed level display area 41i is an area that displays the current level set by the dial 75 as an image. Figure 6 shows the state when the first level is selected. The urea solution level display area 41j is an area that displays the remaining amount of urea solution stored in the urea solution tank as an image. The hydraulic oil temperature display area 41k is an area that displays the temperature status of the hydraulic oil in the hydraulic oil tank.

[0076] The air conditioner operating status display area 41m includes an outlet display area 41m1 that displays the current outlet position, an operating mode display area 41m2 that displays the current operating mode, a temperature display area 41m3 that displays the current set temperature, and an airflow display area 41m4 that displays the current set airflow.

[0077] The image display area 41n is the area that displays the image captured by the imaging device, which functions as the spatial recognition device S6. In the example shown in Figure 6, the image display area 41n displays the right-facing image RG, the rear-facing image BG, and the overhead image TG. The right-facing image RG is an image that shows the space to the right of the work machine 100 and includes the image GC1 of the upper right edge of the upper rotating body 3. The right-facing image RG is a real viewpoint image generated by the control unit 40a and is generated based on the image acquired by the right camera S6R. The rear-facing image BG is an image that shows the space behind the work machine 100 and includes the image GC2 of the counterweight. The rear-facing image BG is a real viewpoint image generated by the control unit 40a and is generated based on the image acquired by the rear camera S6B. The overhead image TG is a virtual viewpoint image generated by the control unit 40a and is generated based on the images acquired by the rear camera S6B, the left camera S6L, and the right camera S6R, respectively. Furthermore, a shovel shape corresponding to the work machine 100 is placed in the center of the overhead view image. This is to allow the operator OP to intuitively understand the positional relationship between the work machine 100 and the objects surrounding it.

[0078] Furthermore, the image display area 41n has a first image display area 41n1 located above and a second image display area 41n2 located below. In the example shown in Figure 6, the right image RG and the rear image BG are placed in the first image display area 41n1, and the overhead image TG is placed in the second image display area 41n2. Alternatively, the image display area 41n may have the overhead image TG placed in the first image display area 41n1, and the rear image BG and the right image RG placed in the second image display area 41n2.

[0079] Furthermore, the image display area 41n may be configured to simultaneously display the left image. In this case, the image display area 41n may have the left image and the right image RG placed in the first image display area 41n1, and the rear image BG and the overhead image TG placed in the second image display area 41n2. In this case, the left image may be placed to the left of the first image display area 41n1, and the right image RG may be placed to the right of the first image display area 41n1.

[0080] Furthermore, in the example shown in Figure 6, the right image RG and the rear image BG are placed adjacent to each other horizontally, but they may be placed with a gap between them. Also, in the example shown in Figure 6, the image display area 41n is a vertically elongated area, but the image display area 41n may be a horizontally elongated area. If the image display area 41n is a horizontally elongated area, the image display area 41n may have the overhead image TG placed on the left side as the first image display area 41n1, and the rear image BG and right image RG placed on the right side as the second image display area 41n2. In this case, they may be placed with a gap between them horizontally, or the positions of the overhead image TG and the rear image BG and right image RG may be swapped.

[0081] The switch image display area 41p has a first switch image display area 41p1 to a seventh switch image display area 41p7. In the example shown in Figure 6, the first switch image display area 41p1 to the seventh switch image display area 41p7 are arranged at the bottom of the image display unit 41, spaced apart from each other. Icons representing the functions of the corresponding push switches 42a1 to 42a7 are displayed in the first switch image display area 41p1 to the seventh switch image display area 41p7.

[0082] The first switch image display area 41p1 displays menu detail item icons for displaying menu detail items. When the operator OP operates the push switch 42a1 corresponding to the first switch image display area 41p1, the icons displayed in the second switch image display areas 41p2 to the seventh switch image display areas 41p7 switch to icons associated with menu detail items.

[0083] In the example shown in Figure 6, the fourth switch image display area 41p4 displays an icon for displaying information related to the digital level. When the operator OP operates the push switch 42a4 corresponding to the fourth switch image display area 41p4, the overhead image TG displayed in the second image display area 41n2 switches to an image (sub-screen) showing information related to the digital level. Meanwhile, the rear image BG and the right-facing image RG displayed in the first image display area 41n1 continue to be displayed at the same size. However, the image (sub-screen) showing information related to the digital level may be displayed in the first image display area 41n1. In this case, the rear image BG and the right-facing image RG displayed in the first image display area 41n1 may be displayed in the second image display area 41n2 instead of the overhead image TG.

[0084] The sixth switch image display area 41p6 displays icons for displaying information related to information-based construction. When the operator OP operates the push switch 42a6 corresponding to the sixth switch image display area 41p6, the overhead image TG displayed in the second image display area 41n2 switches to an image (sub-screen) showing information related to information-based construction. Meanwhile, the rear image BG and right-facing image RG displayed in the first image display area 41n1 continue to be displayed at the same size. However, the image (sub-screen) showing information related to information-based construction may be displayed in the first image display area 41n1. In this case, the rear image BG and right-facing image RG displayed in the first image display area 41n1 may be displayed in the second image display area 41n2 instead of the overhead image TG.

[0085] The seventh switch image display area 41p7 displays icons for displaying information related to the crane mode. When the operator OP operates the push switch 42a7 corresponding to the seventh switch image display area 41p7, the overhead image TG displayed in the second image display area 41n2 switches to an image (sub-screen) showing information related to the crane mode. Meanwhile, the rear image BG and right-facing image RG displayed in the first image display area 41n1 continue to be displayed at the same size. However, the image (sub-screen) showing information related to the crane mode may be displayed in the first image display area 41n1. In this case, the rear image BG and right-facing image RG displayed in the first image display area 41n1 may be displayed in the second image display area 41n2 instead of the overhead image TG.

[0086] In the example shown in Figure 6, no icons are displayed in the second switch image display area 41p2, the third switch image display area 41p3, and the fifth switch image display area 41p5. Therefore, even if the push switches 42a2, 42a3, and 42a5 corresponding to the second switch image display area 41p2, the third switch image display area 41p3, and the fifth switch image display area 41p5 are operated by the operator OP, no change occurs in the image displayed on the image display unit 41.

[0087] Note that the icons displayed in the first switch image display area 41p1 to the seventh switch image display area 41p7 are not limited to the examples described above, and icons for displaying other information may also be displayed.

[0088] Next, the operation unit 42 will be described. As shown in Figure 6, the operation unit 42 is composed of push switches 42a, which are button-type switches corresponding to each of the first switch image display areas 41p1 to the seventh switch image display areas 41p7. In the example shown in Figure 6, the operation unit 42 includes seven push switches 42a1 to 42a7 arranged in the upper row and seven push switches 42a8 to 42a14 arranged in the lower row. Push switches 42a8 to 42a14 are arranged below each of the push switches 42a1 to 42a7. However, the number, form, and arrangement of the push switches 42a of the operation unit 42 are not limited to the example described above, and may be in a form that combines the functions of multiple button-type switches into one, for example, a jog wheel or jog switch. Also, the operation unit 42 may be configured as a separate component from the display device 40. Alternatively, the image display unit 41 and the operation unit 42 may be integrated into a touch panel, allowing for direct touch operation of the first switch image display area 41p1 to the seventh switch image display area 41p7.

[0089] The push switches 42a1 to 42a7 are positioned below the first to seventh switch image display areas 41p1 to 41p7, respectively, corresponding to the first to seventh switch image display areas 41p1 to 41p7, and function as push switches for selecting the first to seventh switch image display areas 41p1 to 41p7. Because the push switches 42a1 to 42a7 are positioned below the first to seventh switch image display areas 41p1 to 41p7, respectively, corresponding to the first to seventh switch image display areas 41p1 to 41p7, the operator OP can intuitively select the first to seventh switch image display areas 41p1 to 41p7.

[0090] The push switch 42a8 is a switch for switching the captured image displayed in the image display area 41n. Each time the push switch 42a8 is operated, the captured image displayed in the first image display area 41n1 of the image display area 41n is configured to switch between, for example, a rear view image, a left view image, a right view image, and an overhead view image. Alternatively, each time the push switch 42a8 is operated, the captured image displayed in the second image display area 41n2 of the image display area 41n may be configured to switch between, for example, a rear view image, a left view image, a right view image, and an overhead view image. Furthermore, each time the push switch 42a8 is operated, the captured image displayed in the first image display area 41n1 and the captured image displayed in the second image display area 41n2 of the image display area 41n may be swapped. Thus, the push switch 42a8, which functions as the operation unit 42, may be used to switch between the captured image displayed in the first image display area 41n1 or the second image display area 41n2, or it may be used to switch between the captured image displayed in the first image display area 41n1 and the captured image displayed in the second image display area 41n2. In addition, a separate switch may be provided for switching the screen displayed in the second image display area 41n2.

[0091] Push switches 42a9 and 42a10 are switches that adjust the airflow of the air conditioner. In the example shown in Figure 6, when push switch 42a9 is operated, the airflow of the air conditioner decreases, and when push switch 42a10 is operated, the airflow of the air conditioner increases.

[0092] The push switch 42a11 is a switch that turns the cooling and heating functions ON and OFF. In the example shown in Figure 6, the system is configured so that the cooling and heating functions are switched ON and OFF each time the push switch 42a11 is operated.

[0093] Push switches 42a12 and 42a13 are switches that adjust the set temperature of the air conditioner. In the example shown in Figure 6, the set temperature is lowered when push switch 42a12 is operated, and raised when push switch 42a13 is operated.

[0094] The push switch 42a14 is a switch that can switch the display in the engine operating time display area 41f.

[0095] Furthermore, push switches 42a2 to 42a6 and 42a9 to 42a13 are configured to allow input of numbers displayed on or near the respective switches. Additionally, push switches 42a3, 42a4, 42a5, and 42a11 are configured to allow movement of the cursor to the left, up, right, and down, respectively, when the cursor is displayed in the image display area 41n.

[0096] The functions assigned to the push switches 42a1-42a7 and 42a8-42a14 described above are just examples, and other functions may be assigned to them.

[0097] As explained above, when the push switch 42a1 corresponding to the first switch image display area 41p1 is operated while the right image RG, rear image BG, and overhead image TG are displayed in the image display area 41n, new icons (icons representing the functions newly assigned to each of the push switches 42a1 to 42a7) are displayed in the second switch image display area 41p2 to the seventh switch image display area 41p7, with the right image RG and rear image BG displayed. Therefore, the operator OP can check the new icons while checking the right image RG and rear image BG.

[0098] Furthermore, in the example described above, when one of the push switches 42a1 to 42a7 corresponding to the first switch image display area 41p1 to the seventh switch image display area 41p7 is operated while the rightward image RG, rearward image BG, and overhead image TG are displayed in the image display area 41n, the overhead image TG switches to an information image showing information corresponding to the selected switch image display area 41p. In this way, since the information image is displayed while the rightward image RG and rearward image BG are displayed, the operator OP can continue to monitor the surroundings (the space behind and to the right) even while the information image is displayed. Therefore, the operator OP can operate the work machine 100 while the information image is displayed.

[0099] Next, with reference to Figure 7, an example of the display of an information image shown on the image display unit 41 of the display device 40 will be described. Figure 7 shows a screen including a payload information image 41q, which is an example of an information image displayed on the image display unit 41 of the display device 40. The payload information image 41q displayed on the image display unit 41 in Figure 7 is displayed, for example, when a push switch 42a corresponding to a switch image display area 41p (one of the first to seventh switch image display areas 41p7 in Figure 6) containing a payload information icon (not shown) is operated.

[0100] In the example shown in Figure 7, the first switch image display area 41p1 displays menu detail item icons for displaying menu detail items. When the operator OP operates the push switch 42a1 corresponding to the first switch image display area 41p1, the icons displayed in the second switch image display areas 41p2 to the seventh switch image display areas 41p7 switch to icons associated with menu detail items.

[0101] The second switch image display area 41p2 displays an icon (an icon for the cargo bed of the transport vehicle 200) for displaying a screen for setting information related to the transport vehicle 200. When the operator OP operates the push switch 42a2 corresponding to the second switch image display area 41p2, the image display unit 41 displays a screen for setting information related to the transport vehicle 200. The information related to the transport vehicle 200 includes the maximum load capacity, etc.

[0102] The third switch image display area 41p3 displays an icon (a target icon) for displaying a screen for setting the target load weight. When the operator OP operates the push switch 42a3 corresponding to the third switch image display area 41p3, the image display unit 41 displays a screen for setting the target load weight.

[0103] The fourth switch image display area 41p4 displays an icon (an icon with two vertical lines) for temporarily suspending calculations using the weight of the object taken into the bucket 6. When the operator OP operates the push switch 42a4 corresponding to the fourth switch image display area 41p4, the image display unit 41 displays a text message indicating, for example, that the calculation of the weight of the object taken into the bucket 6 has been suspended. During this time, no matter where the object taken into the bucket 6 is dumped (including the cargo bed of the transport vehicle 200), its weight will not be added to the load weight (the weight of the object loaded on the cargo bed of the transport vehicle 200). Furthermore, when the operator OP operates the push switch 42a4 again, this suspension is released.

[0104] The fifth switch image display area 41p5 displays an icon (an "x" mark icon) to prevent calculations from being performed using the weight of the object currently in the bucket 6. When the operator OP operates the push switch 42a5 corresponding to the fifth switch image display area 41p5, the image display unit 41 displays a text message indicating, for example, that calculations will not be performed using the weight of the object currently in the bucket 6. In this case, no matter where the object currently in the bucket 6 is dumped (unloaded), including the loading platform of the transport vehicle 200, the weight of the object currently in the bucket 6 will not be added to the load weight.

[0105] The sixth switch image display area 41p6 displays an icon (a checkmark icon) to inform the shovel controller 30 that the loading operation is complete. When the operator OP operates the push switch 42a6 corresponding to the sixth switch image display area 41p6, the display device 40 sends a payload information request signal to the shovel controller 30, and the image display unit 41 displays, for example, a text message indicating that the loading operation is complete. Therefore, the push switch 42a6 functions as a "loading complete button".

[0106] The seventh switch image display area 41p7 displays an icon (a power icon) for calling up the home screen. When the operator OP operates the push switch 42a7 corresponding to the seventh switch image display area 41p7, the image display unit 41 displays the home screen as shown in Figure 6.

[0107] In addition, in the example shown in Figure 7, the payload information image 41q includes a truck icon 41q1, a target load weight image 41q2, a vessel load image 41q3, a bucket load image 41q4, a bucket icon 41q5, a truck name image 41q6, a bucket name image 41q7, a weighing unit image 41q8, a cloud icon 41q9, a zero adjustment icon 41q10, a truck counter image 41q11, and a bucket counter image 41q12.

[0108] The truck icon 41q1 is an icon that represents the loading status of the goods loaded on the cargo bed of the transport vehicle 200. In the illustrated example, the truck icon 41q1 is configured to represent the loading status of the transport vehicle 200 in six stages: "empty," "little," "medium," "almost full," "full," and "over," by changing the size of the image portion (area of ​​the illuminated portion) that represents the goods loaded on the cargo bed. Figure 7 shows that the loading status is "medium." The truck icon 41q1 may also be configured to black out when the loading operation is interrupted.

[0109] The target load weight image 41q2 represents the target load weight of the goods to be loaded onto the cargo bed of the transport vehicle 200. In the illustrated example, the initial value of the target load weight is the maximum load weight of the transport vehicle 200, and it decreases as goods are loaded onto the cargo bed of the transport vehicle 200. The display color of the target load weight may also change depending on the loading status, etc.

[0110] The vessel load image 41q3 represents the vessel load, which is the weight of the items already loaded onto the cargo bed of the transport vehicle 200. The display color of the vessel load may change according to the loading condition, similar to the case of the target load weight. In this case, the loading condition may be determined based on the ratio of the vessel load to the maximum load weight.

[0111] The bucket load image 41q4 represents the bucket load, which is the weight of the objects already placed inside the bucket 6. The display color of the bucket load may change according to the loading state, similar to the case of the target load weight and the vessel load. In this case, the loading state may be determined based on the ratio of the total weight of the vessel load and the bucket load to the maximum load weight.

[0112] Figure 7 shows that the target load capacity is 0.5 tons and the internal load of the vessel is 9.5 tons. This is based on the fact that the maximum load capacity of the transport vehicle 200 is 10 tons. Figure 7 also shows that the internal load of the bucket is 0.8 tons, which exceeds the target load capacity. In other words, Figure 7 shows that when all the contents of bucket 6 are loaded onto the cargo bed of the transport vehicle 200, the combined weight of the internal load of the bucket and the internal load of the vessel will exceed the maximum load capacity of the transport vehicle 200.

[0113] The bucket icon 41q5 is an icon that represents the state of bucket 6. In the illustrated example, the bucket icon 41q5 is configured to represent the loading state of bucket 6 in three stages: "with soil (measurement accuracy: normal)", "with soil (measurement accuracy: low)", and "without soil", by changing the size of the image portion (area of ​​the illuminated portion) that represents the object taken into bucket 6. Figure 7 shows that the loading state is "with soil (measurement accuracy: normal)". The bucket icon 41q5 may also be configured to black out when the loading operation is interrupted.

[0114] The truck name image 41q6 is an image representing the name of the transport vehicle 200 that is being loaded. In Figure 7, the truck name image 41q6, along with an icon representing the cargo bed of the transport vehicle 200, indicates that the name of the transport vehicle 200 being loaded is "DP-001".

[0115] The bucket name image 41q7 is an image representing the name of bucket 6 attached to the loading machine 100. In Figure 7, the bucket name image 41q7, along with an icon representing bucket 6, shows that the name of bucket 6 attached to the loading machine 100 is "BKT1".

[0116] The unit of measurement image 41q8 is an image representing the unit of each load (weight) displayed. In the example shown, the unit can be selected from "t" (tons) or "lb" (pounds). Figure 7 shows that the unit is "t" (tons).

[0117] The cloud icon 41q9 is an icon that indicates the connection status with the server (management center 300). In the example shown, the cloud icon 41q9 is configured so that the operator OP can distinguish between "communicating with the server" and "not communicating with the server" by changing the color of the icon. Figure 7 shows the state of "communicating with the server".

[0118] The zero adjustment icon 41q10 is an icon that indicates the status of zero adjustment. In the illustrated example, the zero adjustment icon 41q10 is configured so that the operator OP can distinguish between "zero adjustment not performed" and "zero adjustment performed" by changing the color of the icon. Zero adjustment is performed when the internal load of the bucket 6 is a value other than zero, even though no object has been loaded into the bucket 6. The fact that zero adjustment has been performed means, for example, that when the internal load of the bucket 6 is a value other than zero, even though no object has been loaded into the bucket 6, the attachment has been placed in a predetermined position and a predetermined reset button has been pressed (resulting in the internal load of the bucket being adjusted to zero). Figure 7 shows the "zero adjustment performed" state. Note that the "zero adjustment performed" state may be valid only for one subsequent loading operation, or it may be continuously valid for multiple subsequent loading operations. If it is only valid for a single subsequent loading operation, the "zero adjustment completed" state may be automatically switched to the "zero adjustment not completed" state when dumping (soil discharge) is performed.

[0119] The truck counter image 41q11 represents the number of transport vehicles 200 that have been loaded. In the example shown, the truck counter image 41q11 represents the number of transport vehicles 200 that have been loaded after the payload information management application has been launched. Figure 7 shows that one transport vehicle 200 has been loaded, meaning that the transport vehicle 200 currently being loaded is the second vehicle.

[0120] The bucket counter image 41q12 shows how many times the bucket 6 has been used to load the transport vehicle 200 that is currently being loaded. In the example shown, the bucket counter image 41q12 shows that the transport vehicle 200 that is currently being loaded has already been loaded four times.

[0121] Next, with reference to Figure 8, an example of a screen displayed on the display unit (touch panel) of the operator's portable terminal device SP1 will be described. Figure 8 shows an example of the configuration of the history screen SC1 displayed on the display unit (touch panel) of the operator's portable terminal device SP1.

[0122] The history screen SC1 is the screen displayed on the display unit (touch panel) of the operator's mobile terminal device SP1 when the payload information management application is running. Specifically, the history screen SC1 includes the machine selection function display area GP1, the graph display area GP2, the history display area GP3, and the screen icon display area GP4.

[0123] The machine selection function display area GP1 is an area where various images, such as input forms for selecting a work machine 100 to be connected directly via wireless communication, are displayed. Specifically, the machine selection function display area GP1 displays a software button SB1 represented by the symbol ">". In the illustrated example, the software button SB1 is a pull-down button. A pull-down button is an example of an input form that allows an item to be selected and entered from a pre-created list, and is also called a "drop-down list button" or "selection input button". When the operator OP touches the software button SB1, a list of connectable work machines 100 is displayed. Then, when the operator selects one of the desired work machines 100 from the displayed list and touches it, wireless communication is directly established between the wireless communication device 50 of the selected work machine 100 and the operator's portable terminal device SP1, and the payload information related to the selected work machine 100 is displayed on the history screen SC1.

[0124] The graph display area GP2 is the area where graphs based on payload information are displayed. In the example shown, the graph display area GP2 displays a two-dimensional bar graph with the horizontal axis representing the time on today (March 12, 2024) and the vertical axis representing the load weight (tons). Specifically, the graph display area GP2 in Figure 8 shows that the cumulative weight of the soil loaded onto the transport vehicle 200 by the work machine 100 in the 16:00 hour on March 12, 2024, is 9 tons.

[0125] The history display area GP3 is the area that displays a list of payload information that has already been received. In the illustrated example, the history display area GP3 displays the heading information corresponding to one payload information received on March 12, 2024, the heading information corresponding to each of the three payload information received on March 11, 2024, the heading information corresponding to each of the two payload information received on March 10, 2024, and the heading information corresponding to the second of the two payload information received on March 9, 2024. The heading information corresponding to the first of the two payload information received on March 9, 2024 can be viewed by scrolling down the history screen SC1. The same applies to payload information received before March 8, 2024.

[0126] Each heading information includes the track number, reception time, load weight, and software button SB2. Each heading information may also include the machine number (identification number) of the work machine 100. Software button SB2 is used to display the e-ticket generation screen SC2 (see Figure 9), which is a screen for generating an e-ticket related to the payload information identified by the heading information. In the illustrated example, software button SB2 is a software button for switching the history screen SC1 to the e-ticket generation screen SC2 (see Figure 9). The operator OP can display the e-ticket generation screen SC2 by touching software button SB2.

[0127] Furthermore, the history screen SC1 in Figure 8 shows that on March 12, 2024 (today), one loading operation was performed on the dump truck identified as "DP-001"; on March 11, 2024 (yesterday), three loading operations were performed on the dump truck identified as "DP-002"; on March 10, 2024 (the day before yesterday), two loading operations were performed on the dump truck identified as "DP-001"; and on March 9, 2024 (two days ago), two loading operations were performed on the dump truck identified as "DP-002".

[0128] The screen icon display area GP4 is an area for displaying icons related to selectable screens. In the illustrated example, the screen icon display area GP4 displays software button SB3 representing the history screen SC1, software button SB4 representing the report screen SC3 (see Figure 11), and software button SB5 representing the settings screen (not shown). The software button SB3 representing the currently displayed history screen SC1 is displayed in a way that distinguishes it from the software buttons SB4 and SB5 that correspond to screens that are not currently displayed. In the illustrated example, software button SB3 is displayed using a different color from software buttons SB4 and SB5.

[0129] In the history screen SC1 shown in Figure 8, the operator OP can display the report screen SC3 by touching the software button SB4, and the settings screen by touching the software button SB5. In addition, a software button SB12 for displaying a help screen (not shown) is displayed in the upper right corner of the history screen SC1. By touching the software button SB12, the operator OP can display a screen showing detailed information about the history screen SC1 on the display unit of the operator's portable terminal device SP1.

[0130] Each time the operator OP completes a loading operation, they can acquire the payload information into the operator's portable terminal device SP1 by pressing the push switch 42a6 corresponding to the sixth switch image display area 41p6 in the payload information image 41q shown in Figure 7. That is, each time the push switch 42a6 is pressed, the payload information is transmitted from the shovel controller 30 to the operator's portable terminal device SP1 via the wireless communication device 50. Each time payload information is received, new header information is added to the history display area GP3.

[0131] Next, with reference to Figure 9, another example of a screen displayed on the display unit (touch panel) of the operator's portable terminal device SP1 will be described. Figure 9 shows an example configuration of the E-ticket generation screen SC2 displayed on the display unit (touch panel) of the operator's portable terminal device SP1.

[0132] The e-ticket generation screen SC2 is a screen for generating e-tickets based on payload information. In the illustrated example, the e-ticket generation screen SC2 is displayed when the software button SB2 for a specific heading is touched on the history screen SC1.

[0133] Specifically, the e-ticket generation screen SC2 includes the screen icon display area GP4 and the e-ticket editing area GP5.

[0134] The screen icon display area GP4, similar to the screen icon display area GP4 in the history screen SC1 shown in Figure 8, is an area for displaying icons related to selectable screens. In the illustrated example, the screen icon display area GP4 displays a software button SB6 representing the E-ticket generation screen SC2, a software button SB4 representing the report screen SC3 (see Figure 11), and a software button SB5 representing the settings screen (not shown). In other words, the screen icon display area GP4 of the E-ticket generation screen SC2 differs from the screen icon display area GP4 of the history screen SC1 in that it includes the software button SB6. Furthermore, the software button SB6 representing the currently displayed E-ticket generation screen SC2 is displayed in a way that distinguishes it from the software buttons SB4 and SB5, respectively, which correspond to screens that are not currently displayed. In the illustrated example, the software button SB6 is displayed using a different color from the software buttons SB4 and SB5.

[0135] The e-ticket editing area GP5 is the area where information related to the e-ticket is displayed. In the illustrated example, the e-ticket editing area GP5 includes the date and time display area GP51, the load weight display area GP52, the type display area GP53, the truck information display area GP54, the work machine information display area GP55, and the location information display area GP56.

[0136] The date and time display area GP51 is the area that displays the date and time when the loading operation was completed. In the illustrated example, the date and time display area GP51 shows that the loading operation was completed on March 12, 2024 at 17:21.

[0137] The load weight display area GP52 is the area where the load weight is displayed. In the illustrated example, the load weight display area GP52 includes an area where the load weight is displayed in pounds and an area where the load weight is displayed in tons. Specifically, the load weight display area GP52 indicates that 43,318 pounds, or 19.65 tons, have been loaded. The text message "Weight is for reference only." indicates that the load weight value displayed in the load weight display area GP52 is for reference purposes only.

[0138] The type display area GP53 is the area where the type of cargo is displayed. Specifically, the type display area GP53 is configured to allow the operator OP to input the type of cargo. In the illustrated example, the type display area GP53 includes a pull-down button as a software button SB7. When the operator OP touches the software button SB7, a list of cargo types is displayed. Cargo types include, for example, soil, concrete, or scrap metal. Then, when the operator OP selects one of the desired items from the displayed list and touches it, the type of cargo selected is displayed in the type display area GP53.

[0139] The truck information display area GP54 is an area where information about the transport vehicle 200 is displayed. Specifically, the truck information display area GP54 is configured to allow the operator OP to input the name of the company to which the transport vehicle 200 belongs. In the illustrated example, the truck information display area GP54 includes an area where the identification number of the transport vehicle 200 is displayed and a pull-down button that functions as a software button SB8. When the operator OP touches the software button SB8, a list of company names is displayed, and the operator OP can select the desired company name from the list. In Figure 9, "DP-001" is displayed as the identification number of the transport vehicle 200.

[0140] The work machine information display area GP55 is an area where information about the work machine 100 is displayed. Specifically, the work machine information display area GP55 is configured to allow the operator OP, who is operating the work machine 100, to input their name. In the illustrated example, the work machine information display area GP55 includes an area where the identification number of the work machine 100 is displayed and a pull-down button that functions as a software button SB9. When the operator OP touches the software button SB9, a list of operators OPs is displayed, and the operator OP can select their own name from the list. In Figure 9, "123-456-ABCD" is displayed as the identification number of the work machine 100.

[0141] The location information display area GP56 is an area that displays information about the location where the loading operation was performed. In the illustrated example, the location information display area GP56 displays the location coordinates (latitude and longitude) determined based on the output of the positioning device PD mounted on the work machine 100.

[0142] Furthermore, software buttons SB10, SB11, and SB12 are displayed at the top of the E-ticket editing area GP5, and the E-ticket information identification number and the E-ticket issuance date and time are displayed below the location information display area GP56. Specifically, in Figure 9, "A123-B456" is displayed as the E-ticket information identification number, and "Mar 12, 2024 17:27" (March 12, 2024, 17:27) is displayed as the E-ticket issuance date and time. In the illustrated example, the E-ticket information identification number is generated by the shovel controller 30, and the payload information including this information identification number is transmitted from the shovel controller 30 to the operator's mobile terminal device SP1 and the management center 300, respectively.

[0143] The software button SB10 is a software button used to share information between the operator's mobile terminal device SP1 and the driver's mobile terminal device SP2, and is also called the "share button." By touching the share button, the operator OP can send an e-ticket in PDF format to the driver's mobile terminal device SP2. In the illustrated example, the issuance date and time of the e-ticket is the date and time when the software button SB10 was touched.

[0144] The software button SB11 is a software button used to return to the history screen SC1. By touching the software button SB11, the operator OP can display the history screen SC1 shown in Figure 8 again on the display unit of the operator's portable terminal device SP1.

[0145] The software button SB12 is a software button for displaying a help screen (not shown). By touching the software button SB12, the operator OP can display a screen showing detailed information about the e-ticket on the display unit of the operator's portable terminal SP1.

[0146] Next, with reference to Figure 10, an example of a screen displayed on the display unit (touch panel) of the driver's mobile terminal device SP2 will be described. Figure 10 shows an example of the configuration of an E-ticket displayed on the display unit (touch panel) of the driver's mobile terminal device SP2.

[0147] The PDF-format e-ticket displayed on the display unit (touch panel) of the driver's mobile terminal device SP2 is substantially the same as the content of the e-ticket generation screen SC2 (see Figure 9) displayed on the display unit (touch panel) of the operator's mobile terminal device SP1.

[0148] Specifically, the PDF-format e-ticket displayed on the display unit (touch panel) of the driver's portable terminal device SP2 has a date and time display area GP51, a load weight display area GP52, a type display area GP53, a truck information display area GP54, a work machine information display area GP55, and a location information display area GP56.

[0149] In the type display area GP53, "Gravel," meaning soil and sand, is displayed as the value GP53V for the type of cargo selected in the E-ticket generation screen SC2. Similarly, in the truck information display area GP54, "ABC Corporation" is displayed as the value GP54V for the company name (the name of the company to which the transport vehicle 200 belongs) selected in the E-ticket generation screen SC2, and in the work machine information display area GP55, "Minoru Tanaka" is displayed as the value GP55V for the name (the name of the operator OP who is operating the work machine 100) selected in the E-ticket generation screen SC2.

[0150] Next, with reference to Figure 11, another example of a screen displayed on the display unit (touch panel) of the operator's portable terminal device SP1 will be described. Figure 11 shows an example configuration of the report screen SC3 displayed on the display unit (touch panel) of the operator's portable terminal device SP1.

[0151] The report screen SC3 is a screen for displaying aggregated values ​​based on acquired payload information. In the illustrated example, the report screen SC3 is displayed when the software button SB4 is touched on the history screen SC1 (see Figure 8) or the e-ticket generation screen SC2 (see Figure 9), etc.

[0152] Specifically, the report screen SC3 includes the screen icon display area GP4, the extraction condition selection area GP6, the aggregated result display area GP7, the time progression display area GP8, and the map display area GP9.

[0153] The screen icon display area GP4 is an area for displaying icons related to selectable screens, similar to the screen icon display area GP4 in the history screen SC1 shown in Figure 8 and the E-ticket generation screen shown in Figure 9. In the illustrated example, the screen icon display area GP4 displays a software button SB3 representing the history screen SC1 (see Figure 8), a software button SB4 representing the report screen SC3, and a software button SB5 representing the settings screen (not shown). The software button SB4 representing the currently displayed report screen SC3 is displayed in a way that distinguishes it from the software buttons SB3 and SB5 that correspond to screens that are not currently displayed. In the illustrated example, the software button SB4 is displayed using a different color from the software buttons SB3 and SB5. In other words, the screen icon display area GP4 of the report screen SC3 is the same as the screen icon display area GP4 of the history screen SC1, except that the software button SB4 is displayed in a way that distinguishes it.

[0154] The extraction criteria selection area GP6 is the area for selecting daily, weekly, and monthly summaries. In the illustrated example, the software button SB21 is displayed in the extraction criteria selection area GP6. The software button SB21 is a software button with three areas: a left area labeled "Day" corresponding to daily summaries, a central area labeled "Week" corresponding to weekly summaries, and a right area labeled "Month" corresponding to monthly summaries. The operator OP can select daily summaries by touching the left area of ​​the software button SB21, weekly summaries by touching the central area of ​​the software button SB21, and monthly summaries by touching the right area of ​​the software button SB21. Figure 11 shows that daily summaries are selected and "Nov 01, 2023" (November 1, 2023) is selected.

[0155] Furthermore, the extraction condition selection area GP6 displays software buttons SB22 for shifting the selected date and time forward, and software button SB23 for shifting the selected date and time backward. In the example shown in Figure 11, operator OP can, for example, change the selected "Nov 01, 2023" (November 1, 2023) to "Oct 31, 2023" (October 31, 2023) by touching software button SB22 once, and change the selected "Nov 01, 2023" (November 1, 2023) to "Nov 02, 2023" (November 2, 2023) by touching software button SB23 once. If weekly summaries are selected, touching the software button SB22 will change the selected week to the previous week. Similarly, if monthly summaries are selected, touching the software button SB22 will change the selected month to the previous month. The same applies when the software button SB23 is touched.

[0156] The summary results display area GP7 shows an overview of the summary results. In the example shown in Figure 11, the summary results display area GP7 shows that the total load weight on "Nov 01, 2023" (November 1, 2023) was "240" tons, the load weight per bucket was "1.0" tons, the number of transport vehicles (200) that were the target of the loading operation was "24", the number of dumps (soil discharges) required to load one transport vehicle (200) was "10", the load weight per hour was "40" tons, and the time required for one loading operation was "50" seconds.

[0157] The time-lapse display area GP8 shows the temporal changes of various physical quantities. In the example shown in Figure 11, the time-lapse display area GP8 displays a two-dimensional graph showing the temporal changes in loading weight (tons). Specifically, the time-lapse display area GP8 displays a bar graph with loading weight (tons) on the vertical axis and time on the horizontal axis. Note that the height (value) of the bar graph shown in Figure 11 is merely an example and does not correspond to the values ​​displayed in the summary result display area GP7.

[0158] The map display area GP9 shows the location on the map where the loading operation took place. In Figure 11, the upper edge of the map shown in the map display area GP9 is displayed, and the location where the loading operation took place on "Nov 01, 2023" (November 1, 2023) is represented by a circle CL on the map. The operator OP can view the rest of the map (the part below the upper edge visible in Figure 11) by scrolling down the report screen SC3.

[0159] Additionally, the report screen SC3 displays software buttons SB10 and SB12.

[0160] The software button SB10 is a sharing button for sharing information between the operator's mobile terminal device SP1 and the driver's mobile terminal device SP2. By touching the sharing button, the operator OP can send report information in PDF format (the content shown in Figure 11) to the driver's mobile terminal device SP2.

[0161] The software button SB12 is a software button for displaying a help screen (not shown). By touching the software button SB12, the operator OP can display a screen showing detailed information about the report screen SC3 on the display unit of the operator's portable terminal SP1.

[0162] As described above, the work machine 100 according to the embodiment of this disclosure, as shown in Figure 2, comprises a lower traveling body 1, an upper rotating body 3 rotatably mounted on the lower traveling body 1, an attachment AT attached to the upper rotating body 3, an information acquisition device IAD that acquires payload information, which is information relating to the weight of the goods loaded on the cargo bed of the transport vehicle 200, using the attachment AT, and a wireless communication device 50 as a communication device that transmits payload information to a portable terminal device (operator's portable terminal device SP1) capable of wireless communication with the transport vehicle 200. The wireless communication between the transport vehicle 200 and the operator's portable terminal device SP1 is achieved, for example, by direct wireless communication. "Direct wireless communication" between the transport vehicle 200 and the operator's portable terminal device SP1 is wireless communication that is performed directly between the transport vehicle 200 and the operator's portable terminal device SP1 without going through a base station such as a communication satellite or ground base station. However, "direct wireless communication" between the transport vehicle 200 and the operator's mobile terminal device SP1 includes wireless communication conducted via a relay device located between the transport vehicle 200 and the operator's mobile terminal device SP1. In the illustrated example, direct wireless communication between the mobile terminal device (operator's mobile terminal device SP1), the transport vehicle 200, and the wireless communication device 50 is implemented using Bluetooth®, but it may also be implemented using other wireless communication protocols such as Wi-Fi®, ZigBee®, Thread®, or Z-Wave®.

[0163] This configuration has the effect of reducing the effort involved in transmitting payload information from the operator OP of the work machine 100 to the driver DV of the transport vehicle 200.

[0164] Furthermore, the payload information may include the weight of the items loaded onto the cargo bed of the transport vehicle 200, and the date and time when the items were loaded onto the cargo bed of the transport vehicle 200.

[0165] This configuration ensures that the operator (OP) and driver (DV) who view the payload information can reliably receive information about the weight of the items loaded onto the cargo bed of the transport vehicle 200, as well as the date and time when the items were loaded onto the cargo bed of the transport vehicle 200. In other words, this configuration allows the operator (OP) and driver (DV) to quickly confirm the weight of the items loaded onto the cargo bed of the transport vehicle 200, as well as the date and time when the items were loaded onto the cargo bed of the transport vehicle 200.

[0166] Furthermore, the payload information may include at least one of the following: the location of the work machine 100 that has loaded the goods onto the cargo bed of the transport vehicle 200; the type of goods loaded onto the cargo bed of the transport vehicle 200; the name of the company to which the transport vehicle 200 belongs; the name of the operator OP of the work machine 100 that has loaded the goods onto the cargo bed of the transport vehicle 200; and an information identification number.

[0167] This configuration has the effect of providing more detailed information to the operator (OP) and driver (DV) who have viewed the payload information. In other words, this configuration has the effect of allowing the operator (OP) and driver (DV) to quickly confirm more detailed information about the items loaded on the cargo bed of the transport vehicle 200.

[0168] Furthermore, the wireless communication device 50, which functions as a communication device, may transmit payload information to a server located in a remote location (a server installed in the management center 300).

[0169] This configuration has the effect of allowing payload information to be managed at the management center 300. Therefore, this configuration has the effect of allowing relevant parties, including operators (OP) and drivers (DV), to check the payload information from any location and at any time.

[0170] Furthermore, the payload information may include an information identification number. The payload information received by the transport vehicle 200 and the payload information received by the server (the server installed in the management center 300) may be matched based on this information identification number.

[0171] This configuration allows for verification of consistency between payload information received by the transport vehicle 200 and payload information received by the server (a server installed in the management center 300), thereby improving the traceability of the goods loaded on the transport vehicle 200's cargo bed.

[0172] Furthermore, the portable terminal device (operator's portable terminal device SP1) is a multi-functional terminal such as a smartphone carried by the operator OP of the work machine 100, and has a display unit capable of displaying various information. The display unit may be configured to display a history of past loading operations performed by the operator OP, as shown in Figure 8.

[0173] This configuration has the effect of making it easier to check the history of past loading operations performed by the operator (OP).

[0174] Furthermore, the display unit of the portable terminal device (operator's portable terminal device SP1) may be configured to display aggregated values ​​related to past loading operations performed by the operator OP, as shown in Figure 11.

[0175] This configuration has the effect of making it easier for operators to check aggregated data related to past loading operations. Specifically, operators can check aggregated data related to past loading operations simply by installing the payload information management application on their mobile terminal device SP1 (smartphone).

[0176] Furthermore, the portable terminal device (operator's portable terminal device SP1) may be configured to enable wireless communication with another portable terminal device (driver's portable terminal device SP2) carried by the driver DV of the transport vehicle 200. Note that wireless communication may also be achieved through direct wireless communication.

[0177] This configuration eliminates the need for the operator (OP) to print payload information slips and hand them over to the driver (DV), thereby improving the efficiency of the loading process.

[0178] Furthermore, the mobile terminal device (operator mobile terminal device SP1) and another mobile terminal device (driver mobile terminal device SP2) may be configured to communicate without the need for pairing.

[0179] This configuration eliminates the hassle of establishing wireless communication between the operator's mobile terminal SP1 and the driver's mobile terminal SP2, and further facilitates the transmission of payload information from the operator OP to the driver DV. Specifically, the operator OP can send an electronic ticket (E-ticket) to the driver's mobile terminal SP2 simply by touching the share button on the operator's mobile terminal SP1 (smartphone), without performing any preliminary operations such as pairing. Similarly, the driver DV can receive the electronic ticket (E-ticket) simply by having the driver's mobile terminal SP2 (smartphone) with them, without performing any preliminary operations such as pairing.

[0180] Furthermore, the portable terminal device for a work machine according to the embodiment of this disclosure is a portable terminal device (operator's portable terminal device SP1) carried by the operator OP of the work machine 100, and is configured to receive payload information transmitted from a communication device (wireless communication device 50), generate an electronic slip (E-ticket) based on the received payload information, and transmit the electronic slip (E-ticket) to the transport vehicle 200 via wireless communication. Note that the wireless communication may be direct wireless communication.

[0181] This configuration eliminates the need for the operator (OP) to print payload information slips and hand them over to the driver (DV), thereby improving the efficiency of the loading process.

[0182] Preferred embodiments of the present disclosure have been described above. However, the inventions of the present disclosure are not limited to the embodiments described above. Various modifications, substitutions, etc., can be applied to the embodiments described above without departing from the scope of the inventions of the present disclosure. Furthermore, each of the features described with reference to the embodiments described above may be combined as appropriate, as long as they do not contradict each other technically. [Explanation of Symbols]

[0183] 1. Lower travel body 1L. Left travel hydraulic motor 1R. Right travel hydraulic motor 2. Swivel mechanism 2A. Swivel hydraulic motor 3. Upper slewing body 4. Boom 5. Arm 6. Bucket 7. Boom cylinder 8. Arm cylinder 9. Bucket cylinder 10. Cabin 11. Engine 13. Regulator 14. Main pump 15. Pilot pump 17. Control valve unit 26. Operating device 28. Discharge pressure sensor 29. Operation sensor 30. Shovel controller 31. Solenoid valve 32. Pilot pressure sensor 40. Display device 40a. Control unit 41. Image display unit 42. Operation unit 50. Wireless communication device 100. Working machine 171-176... Control valve 200... Transport vehicle 210... Driver's cab 300... Management center AS... Attitude sensor AT... Attachment CPS... Cylinder pressure sensor DA... Travel actuator DV... Driver IAD... Information acquisition device NW... Communication line OP... Operator PD... Positioning device PS... Payload information management system PV... Swivel axis S1... Boom angle sensor S2... Arm angle sensor S3... Bucket angle sensor S4... Machine tilt sensor S5... Swivel angular velocity sensor S6... Spatial recognition device S6B... Rear camera S6F... Front camera S6L... Left camera S6R... Right camera S7... Boom cylinder pressure sensor S7B... Boom bottom pressure sensor S7R... Boom rod pressure sensor S8... Arm cylinder pressure sensor S8B... Arm bottom pressure sensor S8R... Arm rod pressure sensor S9... Bucket cylinder pressure sensor S9B... Bucket bottom pressure sensor S9R... Bucket rod pressure sensor SA... Swivel actuator SP1... Operator's mobile terminal SP2... Driver's mobile terminal SYS... Management system T1... Communication device WA... Work actuator

Claims

1. Lower running body and An upper slewing body is mounted on the lower traveling body so as to be rotatable, The attachment mounted on the upper rotating body, An information acquisition device that acquires payload information, which is information regarding the weight of the items loaded on the cargo bed of a transport vehicle, using the aforementioned attachment, The system includes a communication device that transmits the payload information to a portable terminal device capable of wireless communication with the transport vehicle, Agricultural machinery.

2. The payload information includes the weight of the items loaded onto the cargo bed of the transport vehicle, and the date and time when the items were loaded onto the cargo bed of the transport vehicle. The work machine according to claim 1.

3. The payload information includes at least one of the following: the location of the work machine that loaded the goods onto the cargo bed of the transport vehicle; the type of goods loaded onto the cargo bed of the transport vehicle; the name of the company to which the transport vehicle belongs; the name of the operator of the work machine that loaded the goods onto the cargo bed of the transport vehicle; and an information identification number. The working machine according to claim 2.

4. The communication device transmits the payload information to a server located in a remote location. The work machine according to claim 1.

5. The aforementioned payload information includes an information identification number, The payload information received by the transport vehicle and the payload information received by the server are compared based on the information identification number. The work machine according to claim 4.

6. The aforementioned portable terminal device is a multi-functional terminal carried by the operator of the work machine, and has a display unit capable of displaying various information. The display unit is configured to display the history of past loading operations performed by the operator. The work machine according to claim 1.

7. The aforementioned portable terminal device is a multi-functional terminal carried by the operator of the work machine, and has a display unit capable of displaying various information. The display unit is configured to display aggregate values ​​related to past loading operations performed by the operator. The work machine according to claim 1.

8. The aforementioned portable terminal device is configured to enable wireless communication with another portable terminal device carried by the driver of the transport vehicle. The work machine according to claim 1.

9. The aforementioned mobile terminal device and the aforementioned other mobile terminal device are configured to communicate without the need for pairing. The working machine according to claim 8.

10. A portable terminal device for a work machine, carried by an operator of the work machine, comprising: a lower traveling body; an upper rotating body rotatably mounted on the lower traveling body; an attachment attached to the upper rotating body; an information acquisition device that acquires payload information, which is information relating to the weight of an object loaded onto the cargo bed of a transport vehicle using the attachment; and a communication device that transmits the payload information to an external source, The system receives the payload information transmitted from the communication device, generates an electronic document based on the received payload information, and transmits the electronic document to the transport vehicle via wireless communication. A portable terminal device for industrial machinery.

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