Work vehicle management system

Abstract

To provide a work vehicle management system capable of alleviating a monitoring load of a supervisor, while dealing with a plurality of management items.SOLUTION: A work vehicle management system which acquires information sensed or detected by various sensors from a plurality of work vehicles 100, and which displays management information that shows a state of the plurality of work vehicles 100 under management, and work progress. The work vehicle management system includes a management device which stores the sensed or detected information that is acquired in a vehicle information storage part for each of the work vehicles 100, and based on the vehicle information stored in the vehicle information storage part, which displays the management information on a display part. The management device includes: display method setting means for setting a display method which displays the management information; and display method change means for changing the display method set by the display method setting means.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a vehicle control system that controls a work vehicle that performs agricultural work. [Background technology]

[0002] In recent years, there has been an increasing interest in smart agriculture, which utilizes robotics and ICT to achieve ultra-labor-saving, high-quality production. In the technical field of work vehicles that perform agricultural work in fields, for example, as shown in Patent Document 1 below, there is known a technology that uses a positioning satellite system such as GPS to determine the current position of a work vehicle and drives the work vehicle by unmanned operation.

[0003] Furthermore, work vehicle management systems are known that manage multiple work vehicles that run autonomously. For example, the following Patent Document 2 discloses a work vehicle management system that is configured to monitor the remaining fuel in multiple work vehicles, display a list of the work vehicles and their remaining fuel on a management screen, and notify an administrator of work vehicles with low fuel remaining. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 11-266608 [Patent Document 2] JP 2020-103104 A Summary of the Invention [Problem to be solved by the invention]

[0005] Here, when managing multiple work vehicles, there is a need to manage not only the remaining amount of fuel, but also various other information, such as the scheduled end time of work and the remaining amount of agricultural materials. However, if the number of management items of the work vehicle management system is increased in order to manage various information, the convenience of the system will improve, but the manager will have to determine which management items to monitor due to the increase in management items, which will increase the monitoring burden. Furthermore, the more work vehicles are managed by the work vehicle management system, the more prominent this problem becomes.

[0006] SUMMARY OF THE PRESENT EMBODIMENTS Accordingly, an object of the present invention is to provide a work vehicle management system that can solve such problems and reduce the monitoring burden on the manager while handling a plurality of management items. [Means for solving the problem]

[0007] In order to achieve the above object, the first invention provides: A work vehicle management system configured to acquire information detected or sensed by various sensors from a plurality of work vehicles, and display management information showing the status and work progress of a plurality of work vehicles under management, a management device that stores the acquired detected or sensed information for each work vehicle in a vehicle information storage unit and displays the management information on a display unit based on the vehicle information stored in the vehicle information storage unit; the management device includes a display method setting means for setting a display method for displaying the management information, and a display method changing means for changing the display method set by the display method setting means, the display method change means is configured to determine whether a display method change condition, which is a condition for changing a setting of a display method of the management information, is satisfied based on the detected or sensed information stored in the vehicle information storage unit, and to automatically change the display method if the display method change condition is satisfied; The present invention provides a work vehicle management system, characterized in that the display method includes a fuel remaining amount order, which displays information about work vehicles in order of least amount of fuel remaining, and a scheduled completion time order, which displays information about work vehicles in order of latest scheduled completion time.

[0008] According to the first aspect of the present invention, the display method change means for changing the display method set by the display method setting means can automatically switch the display to the management items that the manager should monitor, so that the manager's monitoring burden can be reduced while handling a plurality of management items. Also, the manager can know the order of work vehicles that need to be refueled by the display in order of remaining fuel, and the order of work vehicles that will finish work by the display in order of scheduled completion time, making it easier to manage work vehicles.

[0009] A second aspect of the present invention is, in addition to the configuration of the first aspect of the present invention, the management device further includes a weather information acquisition unit that acquires weather information, When displaying the management information in the order of scheduled completion, if there is a work vehicle whose scheduled completion time is later than the time when rain is predicted based on the weather information, the information of that work vehicle is displayed in an emphasized manner.

[0010] According to the second invention, in addition to the effects of the first invention, the manager can be aware of work vehicles that are not expected to finish their work before rainfall, and can take measures such as increasing the work pace of the work vehicles or canceling work.

[0011] The third invention is characterized in that, in addition to the configuration of the first or second invention, the display method further includes a material remaining amount order in which information about work vehicles is displayed in order of least remaining material amount, and a tank remaining amount order in which information about work vehicles is displayed in order of least remaining tank amount.

[0012] According to the third invention, in addition to the effects of the first or second invention, the order in which work vehicles require material replenishment can be known, and further, by displaying the order of remaining tank volume, the order in which work vehicles require work such as discharging contents can be known, thereby improving convenience.

[0013] A fourth aspect of the present invention is, in addition to the configuration of the first or second aspect of the present invention, further comprising a coolant temperature order for displaying information on the work vehicle in descending order of the coolant temperature of a radiator that cools the engine, The management device is configured to acquire temperature information indicating the air temperature, and when the air temperature is equal to or higher than a predetermined temperature, change the display method to the cooling water temperature order by the display method change means.

[0014] According to the fourth invention, in addition to the effects of the first or second invention, when the air temperature rises and the cooling water temperature is likely to rise, the administrator can start monitoring the cooling water temperature to prevent the occurrence of abnormalities (overheating, etc.). Effect of the Invention

[0015] According to the present invention, it is possible to provide a work vehicle management system that can handle a plurality of management items while reducing the monitoring burden on the manager. [Brief description of the drawings]

[0016] [Figure 1] FIG. 1 is a schematic left side view of a work vehicle in a work vehicle management system according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a configuration diagram of a work vehicle management system according to an embodiment of the present invention. [Diagram 3] FIG. 3 is an explanatory diagram for explaining the traveling of the work vehicle by the traveling control means. [Figure 4] FIG. 4(a) is a schematic diagram showing the data contents of the vehicle information, and FIG. 4(b) is a schematic diagram showing the data contents of the farm field information. [Diagram 5] FIG. 5 is a schematic diagram showing an example of a screen display by the display method setting means. [Figure 6] FIG. 6 is an example of the display of management information when the order of remaining fuel amount is selected and set. [Figure 7] FIG. 7 is an example of the display of management information when the scheduled end time order is selected and set. [Figure 8]FIG. 8 is another example of the display of management information when the scheduled end time order is selected and set. [Figure 9] FIG. 9 is an example of the display of management information when the corresponding time order is selected and set. [Figure 10] FIG. 10 is a flowchart showing the flow of the display change process of the display method change means. [Figure 11] FIG. 11 shows an example of the management information displayed when an alert is output.

[0017] <1. Overview of the work vehicle configuration> Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. 1 is a schematic left side view of a work vehicle 100 of a work vehicle management system 1 according to an embodiment of the present invention. In the following description, unless otherwise specified, the forward direction of the work vehicle 100 is referred to as the front, the opposite direction is referred to as the rear, and the right side when facing forward is referred to as the right and the left side is referred to as the left. The work vehicle 100 may also be referred to as the machine body.

[0018] As shown in Fig. 1, the work vehicle 100 is a vehicle that performs agricultural work while traveling in a field F, and in this embodiment, the vehicle has a configuration as a so-called tractor to which various working implements W can be attached and detached to the rear of the vehicle body, but the present invention is not limited to this and may be any vehicle body that can be traveled with a working implement W that performs agricultural work attached. Also, in the illustrated example of Fig. 1, a cultivator that cultivates the field is shown as the working implement W, but the present invention is not limited to this and various implements can be used, such as a grass cutter that cuts weeds in the field, a grass collector that collects cut grass scattered in the field, a sprayer that sprays chemicals on the field, and a fertilizer applicator that applies fertilizer to the field.

[0019] An engine 105 covered by a bonnet 107 is disposed at the front of the vehicle body, and the rotational power of the engine 105 is transmitted to front wheels 103 and rear wheels 104 via a plurality of transmissions, enabling the vehicle to travel. In addition, a control unit 106 is provided behind the engine 105, and an operator can ride in the control unit 106.

[0020] The steering section 106 is provided with a cabin 108 equipped with a steering handle 106a for steering the front wheels 103, which are steered wheels, and a cockpit 106b. In addition, a GNSS receiver 102, which is a position information acquisition device that acquires position information, is provided on the cabin roof 8, which is the ceiling of the cabin 108, and is configured to receive radio waves from an artificial satellite 170 at a predetermined time interval and measure the position of the work vehicle 1.

[0021] The steering handle 106a is configured to steer (direct) the front wheels 103 by a steering device 106c, and this steering device 106c is configured to be capable of automatic steering by a steering actuator (not shown).

[0022] A vehicle monitor 106d, which is a liquid crystal display, is provided near the steering handle 106a, allowing the operator in the control unit 106 to check various information displayed on the vehicle monitor 106d. The control unit 106 is also equipped with operation members 106e that accept operations by the operator, such as a main shift lever, a sub shift lever, a brake pedal, a clutch pedal, and various switches. Although not shown in Fig. 1, the work vehicle 100 is provided with various sensors at appropriate locations that transmit detection information to a vehicle control unit C, which will be described later (see Fig. 2).

[0023] <2. Configuration of the Work Vehicle Management System (Work Vehicles)> FIG. 2 is a configuration diagram of a work vehicle management system according to an embodiment of the present invention. As shown in Figure 2, the work vehicle management system 1 includes a plurality of work vehicles 100, 100, 100, ..., a management device 200 that manages the plurality of work vehicles 100, 100, 100, ..., and an information terminal 300 that can input and display various information.

[0024] The work vehicle 100 is equipped with a vehicle control unit C that performs various types of information processing. This vehicle control unit C is a functional unit that handles control and is configured to include a CPU (Central Processing Unit) that performs predetermined calculations or control processing, a ROM (Read-Only Memory) in which predetermined control programs are stored, a RAM (Random Access Memory) that temporarily stores processing data, a timer with a calendar function for measuring time, an ECU (Electronic Control Unit), and the like.

[0025] A position information acquisition device 102, a fuel sensor S1, a material remaining amount sensor S2, a full amount detection sensor S3, a cooling water temperature sensor S4, an abnormality detection sensor S5, and an operation member 106e are connected to the input side of the vehicle control unit C, making it possible to acquire various information (detection information, operation information, etc.).

[0026] Also, the steering device 106c, the vehicle monitor 106e, and the work machine W are connected to the output side, and are capable of transmitting control signals, image output information, and the like. Also, the vehicle control unit C is configured to be able to connect to a network NW by a transmitting / receiving unit 109, which is an information communication device, and to be able to transmit and receive various information. Here, the network NW is a mechanism in which at least two devices are connected and enable the transmission of information between the devices, and is, for example, a wireless LAN (Local Area Network), Bluetooth (registered trademark), or LTE (Long Term Evolution) (registered trademark), etc. As a result, the vehicle control unit C is configured to be able to transmit and receive various information to and from a management device 200 connected to the network NW.

[0027] As described above, the position information acquisition device 102 is a GNSS receiver, and is configured to receive radio waves at predetermined time intervals, so that the vehicle control unit C acquires information indicating the current position of the work vehicle 1 at predetermined time intervals.

[0028] The fuel sensor S1 is a sensor that detects the remaining amount (%) of fuel in the work vehicle 1. The material remaining amount sensor S2 is a sensor that detects the remaining amount (%) of materials loaded on the work vehicle 1. Examples of materials include fertilizer, sowing seeds, and spraying chemicals, and the type of materials varies depending on the type of work performed by the work vehicle 100. The full amount detection sensor S3 is a sensor that detects the full amount of a storage tank loaded on the work vehicle 100, and is capable of detecting the remaining amount (%) of the tank. The storage tank is, for example, a tank that stores harvested products, a grass collection tank that stores grass clippings, and the like, and the type of tank varies depending on the type of work performed by the work vehicle 100. For example, when the full amount detection sensor S3 detects that the remaining amount (%) of the tank is 30%, this indicates that there is a margin of 30% until the tank is full (100%). In this way, the full amount detection sensor S3 is a storage rate detection sensor that detects the storage rate of the tank. The coolant temperature sensor S5 is a sensor that detects the temperature of the coolant in a radiator (not shown) of the work vehicle 100. The abnormality detection sensor S5 is a sensor that detects abnormalities in the body of the work vehicle 100 (such as failures of various devices).

[0029] The vehicle control unit C includes a driving control means c1, which is an information processing program that performs predetermined functions, a route calculation means c2, a work machine control means c3, an information transmission means c4, and a setting information storage unit c5, which is a storage area.

[0030] The travel control means c1 uses the position information acquired from the position information acquisition device 102 to travel the vehicle along the planned travel route R. Here, the travel route of the work vehicle 100 during automatic travel will be described with reference to FIG. 3. FIG. 3 is an explanatory diagram for explaining the travel of the work vehicle 100 by the travel control means c1. As shown in FIG. 3, the planned travel route R is a route that automatically travels in the field F in a single stroke, for example, from the work start point P1 to the work end point P2, by repeating a straight travel route r1 that travels straight and a turning route r2 that turns between the straight travel routes r1. However, the planned travel route R is not necessarily limited to this route.

[0031] 2, the route calculation means c2 acquires the field information Df from the management device 200 described later, and calculates the planned travel route R from the information such as the working width input from the operation member 106e. The information related to the calculated planned travel route R is stored in the setting information storage unit c5, and is referred to during automatic travel.

[0032] The work machine control means c3 has a function of controlling the work machine W, and is capable of controlling the start and stop of driving of the work machine W, as well as raising and lowering the work machine W, and the like.

[0033] The information transmission means c4 performs the function of transmitting the detection / detection information of the various sensors S1-S6 to the management device 200 via the network NW by the transmission / reception unit 109, thereby enabling the management device 200 to appropriately acquire the detection / detection information of the various sensors S1-S6. The detection / detection information of the various sensors S1-S6 is linked to information relating to the vehicle number (vehicle ID) of the work vehicle 100 that was the subject of the detection / detection, and is configured to be stored in the vehicle information storage unit m8 of the management device 200.

[0034] The setting information storage unit c5 stores information relating to vehicle numbers (vehicle IDs) for uniquely identifying a plurality of work vehicles 100, and various setting information.

[0035] <3. Configuration of the Work Vehicle Management System (Management Device)> The management device 200 is an information processing device, and may be, for example, a personal computer, a server computer, a tablet terminal, a smartphone, or the like.

[0036] The management device 200 includes a management control unit M that performs various types of information processing. The management control unit M is a functional unit that is responsible for control and includes a CPU (Central Processing Unit) that performs predetermined calculations or control processing, a ROM (Read-Only Memory) that stores predetermined control programs, a RAM (Random Access Memory) that temporarily stores processing data, a timer with a calendar function that keeps time, and the like.

[0037] The management control unit M is equipped with a weather information acquisition unit 201 and an input member 202 on the input side, and a management monitor 203 on the output side, and is also configured to be able to connect to the network NW and send and receive various information via a transmitting / receiving unit 204, which is an information communication device. As a result, the management control unit M is configured to be able to send and receive various information to and from a plurality of work vehicles 100, 100, 100, ... and an information terminal 300 connected to the NW.

[0038] The management control unit M is configured to acquire weather information from a weather information acquisition unit 201. Here, the weather information includes at least information on the area and time where rain is expected to fall. The weather information acquisition unit 201 is configured to be an automatically executed program such as an application program, and to connect to the network NW via the transmission / reception unit 204 at a predetermined timing to acquire weather information from an external website or server.

[0039] The input member 202 is an input device that can receive operations by an administrator and input various information, and is configured by, for example, a keyboard.

[0040] The management monitor 203 is a display device having a display screen capable of displaying various information, and is configured, for example, by a liquid crystal display. The management monitor 203 allows the administrator to check various information displayed on the display screen.

[0041] The transmitter / receiver unit 204 is configured to be able to transmit and receive various types of information to and from the multiple work vehicles 100, 100, 100, . . . and the information terminal 300 via the network NW.

[0042] The management device 200 is equipped with a management information display means m1, which is an information processing program that performs specified functions, a display method setting means m2, a scheduled end time calculation means m3, a predicted corresponding time calculation means m4, a display method changing means m5, a vehicle information memory unit m6, a field information memory unit m7, and a display method memory unit m8.

[0043] The management information display means m1 is a program that serves the function of displaying management information on the management monitor 203 or the information terminal 300 based on the vehicle information Dt stored in the work vehicle memory unit m6. Here, management information is information that indicates the status and work progress of the work vehicle 100, which is created based on detection and discovery information acquired from the work vehicle 100. The manager can set in advance whether the management information is displayed on the management monitor 203 or the information terminal 300.

[0044] The display method setting means m2 is a program that performs a function of performing a predetermined screen display and setting the display method of management information (i.e., the display order and display contents) based on operation information input to the input member 202 or the information terminal 300. Next, the setting of the display method by the display method setting means m2 will be described later. The display method of management information set by the display method setting means m2 is stored in the display method storage unit m8.

[0045] The estimated end time calculation means m3 is a program which calculates the estimated time when work will be completed by the work vehicle 100, and is capable of estimating the work speed of the work vehicle 100 from changes in the position information of each work vehicle 100 stored in the vehicle information storage unit m6, for example, and calculating the estimated time when work will be completed for each work vehicle 100 from the distance of the planned travel route R stored in the field information storage unit m7. Information relating to the calculated work completion time is stored in the vehicle information Dt each time.

[0046] The predicted response time calculation means m4 is a program that performs the function of calculating the time of an event (response) that requires work for each work vehicle 100. Examples of events are when the work vehicle 100 runs out of fuel, the tank is full, or materials run out, and the predicted response time calculation means m4 calculates the predicted time (predicted response time) when the work vehicle 100 runs out of fuel, the tank is full, or materials run out, etc., from changes in the position information of each work vehicle 100 stored in the vehicle information storage unit m6, and the amount of change per unit time in the remaining amount of fuel, remaining amount of materials, and remaining amount in the tank. Information related to the calculated predicted response time is stored in the vehicle information Dt each time, together with event information.

[0047] The display method changing means m5 is a program that performs the function of automatically changing the display method of the management information set by the display method setting means m2. The display change process by the display method changing means m5 will be described in detail later.

[0048] The vehicle information storage unit m6 is a storage area that stores the vehicle information Dt. 4(a) is a schematic diagram showing the contents of the data of the vehicle information Dt. Note that the vehicle information Dt refers to various types of information related to the work vehicle 100. As shown in FIG. 4(a), the vehicle information Dt stores records configured with field information such as a "vehicle number" that uniquely identifies the work vehicle 100, a "driving setting" that stores whether each work vehicle T is in manual driving mode or automatic driving mode, a "remaining fuel amount" (%) in which the detection information of the fuel sensor S1 is recorded, a "remaining material amount" (%) in which the detection information of the material remaining amount sensor S2 is recorded, a "remaining tank amount" (%) in which the detection information of the full amount detection sensor S3 is recorded, a "cooling water temperature" (°C) in which the detection information of the cooling water temperature sensor S4 is recorded, "presence or absence of abnormality" in which the detection information of the abnormality detection sensor S5 is recorded, a "field to be worked on" in which the field number (field ID) of the field in which the work vehicle 100 is working is recorded, a "current position" in which the position information acquired by the position information acquisition device 102 is recorded, a "scheduled end time" in which the scheduled end time calculated by the above-mentioned scheduled end time calculation means m3 is recorded, and a "working machine" in which the type of working machine W attached to the work vehicle 100 is recorded. In this way, the vehicle information Dt stores all the necessary information for each work vehicle 100 under its management.

[0049] The field information storage unit m7 is a storage area for storing the field information Df. FIG. 4(b) is a schematic diagram showing the data contents of the farm field information Df. The field information Df stores records composed of field information such as a "field number" (field ID) that uniquely identifies field F, a "field location" that indicates the field location of field F, a "field size" that indicates the size of the field, a "field shape" that indicates the shape of the field, a "field entrance / exit point" that indicates the position information of the entrance / exit point P3 of field F, a "work start point" that indicates the position information of the work start point P1 of field F, a "work start point" that indicates the position information of the work end point P2 of field F, and a "planned driving route" that indicates the position information of the trajectory of the planned driving route R.

[0050] Returning to FIG. 2, the display method storage unit m8 stores the display method set by the display method setting means m2, the display method changed by the display method changing means m5, and the like.

[0051] The information terminal 300 is an information processing device that has a communication mechanism connectable to a network NW and is capable of displaying and inputting various types of information, and examples of the information terminal include a personal computer, a smartphone, a tablet terminal, and a wearable terminal.

[0052] <4. Setting the display method of management information> FIG. 5 is a schematic diagram showing an example of a screen display by the display method setting means m2. In detail, FIG. 5 shows a display screen D for setting the display method, which is displayed on the management monitor 203 or the information terminal 300 by the display method setting means m2. The manager selects each button of the remaining fuel amount order d1, remaining material amount order d2, remaining tank amount order d3, cooling water temperature order d4, scheduled end time order d5, and response time order d6 with the selection cursor d7 to set the corresponding display method. As a result, it is possible to display the management information in the order of remaining fuel amount, remaining material amount, remaining tank amount, cooling water temperature, scheduled end time, and response time as the management items. Thus, the selected display method of the management information is stored in the display method storage unit m8. The display method setting means m2 acquires the vehicle information Dt including necessary information from the vehicle information storage unit m6 when displaying the management information.

[0053] 6 is an example of the display of management information when the order of remaining fuel is selected and set. The management information display means m1 displays the management information on the management monitor 203 or the information terminal 300 based on the display method of the management information set by the display method setting means m2.

[0054] 6, the display screen D2 in order of remaining fuel is configured to display a heading section d21 indicating that the display is in order of remaining fuel, a vehicle number display section d22 in which the vehicle numbers of the work vehicles 100 under management are displayed in order of least remaining fuel, and a data content display section d23 in which the remaining fuel is displayed. In a similar manner, when material remaining amount is selected, the vehicle numbers of the work vehicles 100 under management are displayed in order of least remaining material amount, when tank remaining amount is selected, the vehicle numbers are displayed in order of least remaining tank amount, and when cooling water temperature is selected, the vehicle numbers of the work vehicles 100 under management are displayed in order of highest cooling water temperature, and the remaining amount and temperature data corresponding to the displayed vehicle number are also displayed in the data content display section d23.

[0055] FIG. 7 is an example of the display of management information when the scheduled end time order is selected and set. As shown in Figure 7, the display screen D3 for scheduled completion time is configured to display a header section d31 indicating that the display is in scheduled completion time order, a vehicle number display section d32 displaying the vehicle numbers of the work vehicles 100 under management in order of latest scheduled completion time, and a data content display section d33 displaying the scheduled completion time.

[0056] FIG. 8 is another example of the display of management information when the scheduled end time order is selected and set. In the display example of FIG. 8, in addition to the display of FIG. 7, the display screen D4 in the order of scheduled end times may be configured to highlight the display of the target work vehicle 100 when there is a work vehicle 100 whose scheduled end time is later than the time when rain is expected to fall based on the weather information acquired from the weather information acquisition unit 201. That is, in the illustrated example, the management control unit M refers to the field information Df, acquires information on the location of the target field F, and refers to the weather information of the location. As a result, when it is determined that rain is expected to fall from 15:00, for example, as in the illustrated example, the rows of vehicle numbers T02 and T03 whose scheduled end times are after 15:00 are highlighted by shading or changing the background color, and a rain mark d47 is displayed to alert (notify) the manager. Note that the contents of the heading section d41 and the data content display section d33 are the same as those in the illustrated example of FIG. 7, and therefore their explanations are omitted. In addition, in order to alert, a warning message d44 and a message d45 for prompting the display of a weather forecast are further displayed in the screen display D4. A link to a weather forecast website may be provided in the message d44 when displayed on the information terminal 300. With the above configuration, the manager can learn of the work vehicles 100 that are not expected to finish work before rainfall, and can take measures such as increasing the work pace of the work vehicles 100 or canceling work.

[0057] FIG. 9 is an example of the display of management information when the corresponding time order is selected and set. As shown in Figure 9, the response time display screen D5 is configured to display a header section d51 indicating that the display is in response time order, a vehicle number display section d52 displaying the vehicle numbers of the work vehicles 100 under management in order of earliest expected response time, an estimated response time display section d53 displaying the estimated response time, and an event display section d54 indicating events.

[0058] In the illustrated example of Fig. 9, the vehicle numbers are displayed in order of response time, but if there are overlapping events for work vehicles 100, they may be displayed together for each work vehicle 100. Specifically, in the example of Fig. 9, the row with vehicle number T04 is displayed sixth, but since there is a row with vehicle number T04 second, the row with vehicle number T04, which is sixth, is displayed moved up to third, and the rows from third onwards are displayed moved down by one. This makes it easier for workers to check when performing necessary work together for each work vehicle 100, improving convenience.

[0059] <5. Display method switching process> FIG. 10 is a flowchart showing the flow of the display change process of the display method change means m5. The display change process is started, for example, after the display method is set by the display method setting means m2 and the management information is displayed on the management monitor 203 or the information terminal 300 in the set display method.

[0060] 9, the display method change means m5 acquires display method setting information for the current management information (step #1), and then acquires the latest detection information from the vehicle information storage unit m6 of each work vehicle 100 (step #2).

[0061] The display method change means m5 judges whether the display method change condition, which is a condition for changing the display method setting of the management information, is satisfied from the acquired detection information (step #3), and if satisfied, changes the display method setting (step #4). Examples of the display method change conditions (condition 1) to (condition 3) and changes to the display method setting are listed below.

[0062] (Condition 1) Fuel level is below a certain level When the remaining fuel amount for any of the work vehicles 100 under management falls below a predetermined value (e.g., 30%), the display method is changed to display the remaining fuel amount in ascending order. This makes it possible to quickly check when a work vehicle 100 has a low remaining fuel amount.

[0063] (Condition 2) The remaining amount of materials is below a certain value When the remaining amount of materials for any of the work vehicles 100 under management is below a predetermined value (e.g., 30%), the display method is changed to display the order of remaining materials. This allows for quick confirmation when a work vehicle 100 with a low remaining amount of materials occurs.

[0064] (Condition 3) The tank level is below a certain level When the remaining fuel level in the tank of any of the work vehicles 100 under management falls below a predetermined value (e.g., 30%), the display method is changed to display the remaining fuel level in ascending order. This makes it possible to quickly check when a work vehicle 100 with a low remaining fuel level occurs.

[0065] It is possible to adopt any one of (Condition 1) to (Condition 3), or to configure so that when any of (Condition 1) to (Condition 3) is satisfied, the corresponding display method is changed. In this case, when two or more of (Condition 1) to (Condition 3) are satisfied, the display method with the lowest detection value (%) can be set. For example, in the example below, when there is a work vehicle 100 with 25% remaining fuel, 15% remaining materials, and 20% remaining tank, the display method is changed in the order of remaining materials. This allows the manager to check management items that require urgency first.

[0066] Next, the display method change means m5 causes the management information display means m1 to display the management information (step #5). If the display method change condition is not satisfied in step #3, the management information is maintained in the display method that has already been set. If the display method setting is changed in step #4, the management information is displayed in the changed display method.

[0067] Next, the display method change means m5 determines whether the acquired detection / detection information satisfies an alert output condition, which is a condition for outputting an alert to the management monitor 203 or the information terminal 300 (step #6). If the alert output condition is satisfied, an alert is output to the management monitor 203 or the information terminal 300 (step #7).

[0068] The alert output conditions include, for example, when the remaining fuel, material, or tank amount for any of the work vehicles 100 under management reaches a predetermined lower limit, when the cooling water temperature reaches or exceeds a predetermined upper limit, or when an abnormality is detected by the abnormality detection sensor S5.

[0069] FIG. 11 shows an example of the management information displayed when an alert is output. As shown in Fig. 11, when the alert output conditions are met, a message d61 indicating the alert is displayed on the management information display screen D6, and a switching button d62 is displayed. Note that when the switching button d62 is selected by a predetermined operation (in the case of the management monitor 203, moving the cursor and clicking, and in the case of the information terminal 300, tapping the screen), the setting is configured to switch to a display method corresponding to the alert content. For example, if an alert is output because the remaining fuel amount has reached a predetermined lower limit, the display method will switch in order of the remaining fuel amount. If an abnormality is detected, the vehicle number of the work vehicle 100 in which the abnormality was detected, the number of the field being worked on, etc. are displayed.

[0070] Returning to Fig. 10, the display method change means m5 judges whether the display change process is finished (step #8). If it is judged to be finished, the process is finished, and if it is not judged to be finished, the process returns to step #2. Conditions for terminating the display change process include, for example, when the administrator has finished the management work by a predetermined operation, or when the execution or non-execution of the display change process is switched on (execution is turned off), etc.

[0071] In this way, the work vehicle management system 1 can automatically switch the display to the management items that the manager should monitor by using the display method changing means m5, which changes the display method set by the display method setting means m2, thereby reducing the monitoring burden on the manager while handling multiple management items.

[0072] <6. Other embodiments> Although the embodiment of the present invention has been described above, the present invention is not limited to the above-mentioned embodiment. It goes without saying that the present invention can be modified appropriately within the scope of the technical concept. 9 (Step #3) and the change in the display method setting (Step #4), the management control unit M may be configured to acquire temperature information indicating the current temperature from an external server, and change the display method setting to the coolant temperature order when the temperature is equal to or higher than a predetermined temperature (e.g., 30°C). This allows the manager to start monitoring the coolant temperature when the temperature rises and the coolant temperature is likely to rise, to prevent the occurrence of an abnormality (overheating, etc.).

[0073] In addition, the change in the display method settings by the display method changing means m5 may be temporary, and may be configured to automatically revert to the original display method if the display method change conditions are no longer satisfied after the display method settings are changed. [Explanation of symbols]

[0074] 1 Work vehicle management system 100 Work vehicles 102 Location information acquisition device (GNSS receiver) 103 Front wheel 104 Rear wheel 105 Engine 106 Control Unit 106a Steering wheel 106b Cockpit 106c Steering gear 106d Vehicle Monitor 107 Bonnet 108 Cabin roof 200 Management device 300 Information terminal NW Network W Work Machine F Field

Claims

1. A work vehicle management system configured to acquire information detected or sensed by various sensors from a plurality of work vehicles, and display management information showing the status and work progress of a plurality of work vehicles under management, a management device that stores the acquired detected or sensed information for each work vehicle in a vehicle information storage unit and displays the management information on a display unit based on the vehicle information stored in the vehicle information storage unit; the management device includes a display method setting means for setting a display method for displaying the management information, and a display method changing means for changing the display method set by the display method setting means, the display method change means is configured to determine whether a display method change condition, which is a condition for changing a setting of a display method of the management information, is satisfied based on the detected or sensed information stored in the vehicle information storage unit, and to automatically change the display method if the display method change condition is satisfied; A work vehicle management system characterized in that the display method includes a fuel remaining amount order, which displays information about work vehicles in order of least remaining fuel amount, and a scheduled completion time order, which displays information about work vehicles in order of latest scheduled completion time.

2. The management device further includes a weather information acquisition unit that acquires weather information, The work vehicle management system according to claim 1, characterized in that, in displaying the management information in order of scheduled completion, if there is a work vehicle whose scheduled completion time is later than the time when rain is predicted based on the weather information, the information of that work vehicle is displayed in an emphasized manner.

3. The work vehicle management system according to claim 1 or 2, characterized in that the display method further includes a material remaining amount order, which displays information about work vehicles in order of least remaining material amount, and a tank remaining amount order, which displays information about work vehicles in order of least remaining tank amount.

4. The display method further includes a coolant temperature order for displaying information about the work vehicles in order of the highest coolant temperature of a radiator that cools the engine, The work vehicle management system according to claim 1 or 2, characterized in that the management device is configured to acquire temperature information indicating an air temperature, and when the air temperature is equal to or higher than a predetermined temperature, the display method change means changes the display method to the order of the cooling water temperatures.

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