JP7597632B2 - Display device and agricultural machine - Google Patents

Description

The present invention relates to a display device and an agricultural machine.

The field work machine described in Patent Document 1 includes a powder supplying device that supplies powdered agricultural materials to a field, a traveling body having the powder supplying device, a display unit, and a control unit. In field work for supplying powdered agricultural materials to the field, the control unit displays information on the display unit regarding the supply amount of powdered agricultural materials per unit area of the field.

JP 2019-170273 A

The field work machine described in Patent Document 1 displays the work content, but does not display information about the field being worked on (e.g., location information). As a result, the worker cannot check the field being worked on against the work content while working in the field. For example, if a worker owns multiple fields and the work content differs for each field, the worker cannot check the field being worked on against the work content, making it difficult for the worker to notice an error in the work content while working in the field.

The present invention aims to provide a display device and agricultural machine that can match the field being worked on with the work content.

The display device according to the present invention includes a display unit and a control unit. The control unit causes a first display area of the display unit to display information about a field in which an agricultural machine is working, and causes a second display area of the display unit to display information about the work to be performed by the agricultural machine.

The agricultural work machine according to the present invention is equipped with a display device. The display device includes a display unit and a control unit. The control unit causes a first display area of the display unit to display information about the field in which the agricultural work machine is working, and causes a second display area of the display unit to display information about the work content to be performed by the agricultural work machine.

The present invention provides a display device and agricultural machine that can match the field to be worked on with the work content.

FIG. 1 is a left side view showing a rice transplanter according to a first embodiment. 1 is a top view illustrating an example of an installation position of a display device according to a first embodiment on a rice transplanter. FIG. 1 is an external perspective view showing a display device according to a first embodiment. 1 is a block diagram showing a display device according to a first embodiment. 5A to 5C are diagrams illustrating an example of screen transition of the display device according to the first embodiment. FIG. 4 is a diagram showing an example of a dosage adjustment work screen displayed by the display device according to the first embodiment. A figure showing an example of a variable fertilization adjustment work screen displayed by the display device of embodiment 1. A figure showing the first transition screen of the variable fertilization adjustment work screen displayed by the display device in embodiment 1. A figure showing a second transition screen of the variable fertilization adjustment work screen displayed by the display device in embodiment 1. A figure showing a third transition screen of the variable fertilization adjustment work screen displayed by the display device in embodiment 1. A figure showing an example of a variable fertilization work screen displayed by the display device of embodiment 1. A figure showing an example of a constant fertilization adjustment work screen displayed by a display device in embodiment 1. A figure showing an example of a constant fertilization work screen displayed by the display device of embodiment 1. A figure showing an example of a fertilization work stoppage screen displayed by the display device of embodiment 1.

The following describes an embodiment of the present invention with reference to the drawings. Note that in the drawings, the same or equivalent parts are designated by the same reference symbols and will not be described repeatedly.

<Embodiment 1>
A rice transplanter 1 according to the first embodiment will be described with reference to Fig. 1. Fig. 1 is a left side view showing the rice transplanter 1 according to the first embodiment. The rice transplanter 1 is an example of an agricultural machine. In the first embodiment, the traveling direction of the rice transplanter 1 is the left direction on the paper surface of Fig. 1. In the following description, the left side facing the traveling direction of the rice transplanter 1 may be referred to as the left, and the right side facing the traveling direction of the rice transplanter 1 may be referred to as the right.

As shown in FIG. 1, the rice transplanter 1 includes a traveling section 2, a fertilizer applicator 3, a positioning unit 4, a display device 5, a planting section 6, an engine 10, a transmission case 11, front wheels 12, rear wheels 13, a driver's seat 14, a steering wheel 15, pedals 16, a bonnet 17, and a dashboard 18.

The traveling unit 2 is configured as the body of the rice transplanter 1. The traveling unit 2 travels in the field using the power of the engine 10.

The front wheels 12 and rear wheels 13 support the running unit 2. The front wheels 12 and rear wheels 13 are provided in pairs on the left and right sides of the running unit 2. In the first embodiment, a vehicle speed sensor 19 is disposed on the axle of the front wheels 12. The vehicle speed sensor 19 detects the rotation of the axle to detect the running speed of the running unit 2. The vehicle speed sensor 19 may be disposed in a position different from the front wheels 12.

The engine 10 is supported on the front side of the traveling part 2. The engine 10 is covered by a bonnet 17. The bonnet 17 is configured to be openable and closable. The engine 10 functions as a power source for the rice transplanter 1.

The power of the engine 10 is input to the transmission case 11. The power of the engine 10 is changed in speed by the transmission case 11 and transmitted to the front wheels 12 and the rear wheels 13. The power of the engine 10 is also transmitted to the planting section 6 via the transmission case 11.

The operator of the rice transplanter 1 sits in the driver's seat 14. The driver's seat 14 is located between the front wheels 12 and the rear wheels 13 in the fore-and-aft direction of the running part 2.

A dashboard 18 and a display device 5 are located in front of the driver's seat 14. A steering wheel 15 is located on the dashboard 18.

The handle 15 is attached to a steering column located in front of the driver's seat 14. An operator can grip and turn the handle 15 to instruct the traveling unit 2 to move straight or turn.

The pedal 16 is positioned so as to protrude upward from the floor in front of the driver's seat 14. The operator operates the pedal 16 by stepping on it with his or her foot. In addition, a return spring (not shown) is attached to the pedal 16 to return the pedal 16 to its original position when the operator releases his or her foot from the pedal 16.

The operator commands the running unit 2 to move by pressing down on the pedal 16 with the foot. Specifically, the operator commands the running unit 2 to accelerate or decelerate by changing the depth to which the operator presses the pedal 16 with the foot. On the other hand, the operator commands the running unit 2 to stop moving by removing the foot from the pedal 16.

The planting section 6 is disposed behind the traveling section 2. The planting section 6 plants seedlings in the field. The planting section 6 is connected to the traveling section 2 via a lifting link mechanism 61. The planting section 6 includes, for example, a planting unit 62 and a seedling carrying platform 63. A seedling mat is placed on the seedling carrying platform 63. The seedlings of the seedling mat placed on the seedling carrying platform 63 are supplied to the planting unit 62. The planting unit 62 plants the seedlings in the field.

A lifting cylinder 64 is disposed on the running section 2. The lifting cylinder 64 is driven to extend and retract, thereby raising and lowering the planting section 6 up and down relative to the running section 2.

The fertilizer applicator 3 includes a fertilizer tank 31, a delivery unit 32, an electric motor 33 (see FIG. 4), a conveying hose 34, a blower 35, a delivery body 36, a fertilizer amount dial 37, and a fertilizer controller 38 (see FIG. 4). In the first embodiment, the fertilizer applicator 3 includes multiple fertilizer tanks 31 and the same number of delivery units 32 as the number of fertilizer tanks 31.

The fertilizer tank 31 is disposed in a position between the driver's seat 14 and the seedling carrier 63 in the fore-and-aft direction of the traveling section 2. In the first embodiment, the fertilizer tank 31 stores, for example, powdered fertilizer (agricultural materials).

The delivery unit 32 is connected to the bottom of the fertilizer tank 31. The delivery unit 32 delivers a predetermined amount of fertilizer supplied from the fertilizer tank 31 downward.

A path through which the fertilizer can pass is arranged inside the payout unit 32 (not shown). A payout body 36 having a generally disk shape is rotatably arranged in the path. That is, the payout unit 32 includes the payout body 36. The payout body 36 has a plurality of payout recesses formed therein (not shown) that can hold a predetermined amount of fertilizer. By rotating the payout body 36, the fertilizer held in the payout recesses is paid out downstream of the path.

The electric motor 33 functions as a drive source for rotating the payout body 36 of the payout section 32. The electric motor 33 is attached to an appropriate position of the fertilizer applicator 3.

The conveying hose 34 is connected to the downstream side of the path disposed inside the payout unit 32. The conveying hose 34 is a flexible, elongated tubular member.

The blower 35 is disposed at an appropriate position close to the dispensing unit 32. The blower 35 generates an air flow and sends the air flow to a path inside the dispensing unit 32. As a result, the fertilizer dispensed downstream of the path through the conveying hose 34 is supplied (applied) to the field.

The fertilizer amount dial 37 is an operating means that allows the operator to increase or decrease the number of rotations of the delivery body 36. When the operator operates the fertilizer amount dial 37, the operating speed of the electric motor 33 relative to the running speed of the travelling part 2 increases or decreases, and as a result, the operating speed of the delivery body 36 driven by the electric motor 33, i.e., the number of rotations per unit time, increases or decreases. In other words, when the operator operates the fertilizer amount dial 37, the amount of fertilizer delivered from the fertilizer applicator 3 increases or decreases.

The positioning unit 4 acquires position information indicating the position of the rice transplanter 1. The positioning unit 4 includes, for example, a positioning antenna and a position information receiver. The positioning antenna receives signals from positioning satellites constituting a positioning system such as a global navigation satellite system (GNSS). The positioning signal received by the positioning antenna is input to the position information receiver. The position information receiver processes the input positioning signal to acquire position information indicating the position of the rice transplanter 1. The positioning unit 4 also acquires the positioning accuracy of the position information during signal processing.

Figure 2 is a top view illustrating an example of the mounting position of the display device 5 in the rice transplanter 1 according to the first embodiment. The display device 5 is disposed in a position in the rice transplanter 1 where it can be seen and operated by an operator seated in the driver's seat 14. In the example of Figure 2, the display device 5 is mounted to the right of the handle 15 by a holder 7. Inside the holder 7, a wire (not shown) is disposed to connect the display device 5 to the rice transplanter 1 via a wired connection.

Figure 3 is an external perspective view showing the display device 5 according to the first embodiment. The display device 5 includes a display unit 51, an operation unit 52, and a control unit 53 (see Figure 4). The display unit 51 is configured with a display such as a liquid crystal display or an organic EL (Electro Luminescence) display. The operation unit 52 is configured with a touch panel integrated with the surface of the liquid crystal display or the like that is the display unit 51. Note that the operation unit 52 may be configured with a hard switch and a hard button instead of or in addition to the touch panel. Although not shown, the display device 5 may also include a cover that protects the display unit 51 and the operation unit 52.

Figure 4 is a block diagram showing the display device 5 according to the first embodiment. The display device 5 is connected by wire to the fertilizer applicator 3, the positioning unit 4, and the fertilizer applicator 3 of the rice transplanter 1. A terminal for wired connection (not shown) is present on the side or back of the display device 5 shown in Figure 3. The display device 5 is also connected by wire or wirelessly to the storage unit 8. The storage unit 8 may be a memory built into the fertilizer controller 38 of the fertilizer applicator 3, a storage medium such as a USB (Universal Serial Bus) memory, or a server.

The storage unit 8 stores information about the field, such as the field's location information and the field's name. The storage unit 8 also stores a fertilization map used for variable fertilization work. The fertilization map includes location information indicating multiple areas (meshes) set by dividing the field, and information indicating the amount of fertilization assigned to each area.

The control unit 53 has, for example, a processor such as a CPU (Central Processing Unit) and memory such as a ROM (Read Only Memory) and a RAM (Random Access Memory). For example, the control unit 53 executes various processes defined in a computer program by the processor executing the computer program pre-stored in the memory.

Here, fertilization work will be described as an example of work performed by the rice transplanter 1. Generally, when an operator performs fertilization work using the rice transplanter 1, constant fertilization work is performed in which the rice transplanter 1 travels at a constant amount of fertilizer.

In constant fertilization work, the fertilizer controller 38 keeps the amount of fertilizer applied to the field per unit area constant by linking the travel speed of the traveling unit 2 with the amount of fertilizer applied to the field by the fertilizer applicator 3. In constant fertilization work, the control unit 53 outputs the travel speed of the traveling unit 2 detected by the vehicle speed sensor 19 to the fertilizer controller 38. Alternatively, the fertilizer controller 38 may obtain the travel speed directly from the vehicle speed sensor 19 without going through the control unit 53.

When the traveling speed of the traveling part 2 is fast, the fertilizer controller 38 controls the electric motor 33 to increase the operating speed of the delivery body 36, thereby increasing the amount of fertilizer delivered to the conveying hose 34 per unit time. On the other hand, when the traveling speed of the traveling part 2 is slow, the fertilizer controller 38 controls the electric motor 33 to decrease the operating speed of the delivery body 36, thereby decreasing the amount of fertilizer delivered to the conveying hose 34 per unit time. This allows the fertilizer applicator 3 to maintain a constant amount of fertilizer per unit area applied to the field, regardless of the traveling speed of the traveling part 2.

In recent years, variable fertilization work has been performed in which the rice transplanter 1 changes the amount of fertilizer applied while traveling. In variable fertilization work, for example, a fertilization map is used that combines the planned amount of fertilizer for each area of the field, which is set with reference to the soil fertility and the previous year's harvest, with the position information of the field. The fertilization map is stored in the storage unit 8 described above.

In variable fertilization operations, the control unit 53 refers to the fertilization map stored in the storage unit 8 and changes the amount of fertilizer to be applied for each area. The control unit 53 outputs to the fertilization controller 38 the traveling speed of the traveling unit 2 detected by the vehicle speed sensor 19 and the amount of fertilization on the fertilization map corresponding to the position of the rice transplanter 1 detected by the positioning unit 4. Alternatively, the fertilization controller 38 may directly obtain position information from the positioning unit 4 without going through the control unit 53, and obtain the amount of fertilization on the fertilization map corresponding to the obtained position from the storage unit 8.

When the traveling speed of the traveling unit 2 is fast, the fertilizer controller 38 controls the electric motor 33 to increase the operating speed of the payout body 36, thereby increasing the amount of fertilizer paid out to the conveying hose 34 per unit time. In addition, the fertilizer controller 38 increases or decreases the operating speed of the payout body 36 according to the amount of fertilizer based on the fertilization map. On the other hand, when the traveling speed of the traveling unit 2 is slow, the fertilizer controller 38 controls the electric motor 33 to decrease the operating speed of the payout body 36, thereby decreasing the amount of fertilizer paid out to the conveying hose 34 per unit time. In addition, the fertilizer controller 38 increases or decreases the operating speed of the payout body 36 according to the amount of fertilizer based on the fertilization map. In this way, the fertilizer applicator 3 can change the amount of fertilizer per area to be applied to the field based on the fertilization map, regardless of the traveling speed of the traveling unit 2.

The amount of fertilizer that enters the dispensing recess of the dispensing body 36 may vary depending on the type of fertilizer being applied and the weather (temperature, humidity, etc.) during work. Therefore, the amount of fertilizer (generally kg) dispensed into the conveying hose 34 varies depending on the type of fertilizer and the weather.

Therefore, before starting fertilization work in the field, the worker performs fertilization adjustment work. The amount of fertilization adjustment work includes constant fertilization adjustment work, which adjusts the amount of fertilizer applied when the rice transplanter 1 applies constant fertilization, and variable fertilization adjustment work, which adjusts the amount of fertilizer applied when the rice transplanter 1 applies variable fertilization.

In a typical dosage adjustment operation, the worker places a container at the lower end of the transport hose 34 while the rice transplanter 1 is stopped, and drives the fertilizer applicator 3 by a unit area to collect the fertilizer dispensed from the transport hose 34 in the container. The worker measures the weight of the fertilizer collected in the container, and increases or decreases the amount of fertilizer applied by operating the fertilizer amount dial 37 based on the measurement result.

For example, when the dial value of the fertilizer amount dial 37 is "4", the amount of fertilizer applied by the fertilizer applicator 3 is 40 kg/10a, and when the dial value is "5", the amount of fertilizer applied by the fertilizer applicator 3 is 50 kg/10a. However, depending on the type of fertilizer and the weather, the actual measurement result may be less or more than 50 kg/10a even when the dial value is "5".

Here, assume that the operator is trying to set the fertilizer application amount of the fertilizer applicator 3 to 50 kg/10a. If the measurement result is 40 kg/10a even though the dial value is "5", the operator changes the dial value of the fertilizer application amount dial 37 to, for example, "5.5", and remeasures the weight of the fertilizer delivered from the conveying hose 34. In this way, the operator adjusts the dial value of the fertilizer application amount dial 37 so that the fertilizer application amount of the fertilizer applicator 3 is 50 kg/10a.

Next, the screen displayed by the display device 5 will be described. Below, the screen will be described using the above-mentioned fertilization work as an example. Field information such as the field's location information and the field's name is stored in the storage unit 8. The storage unit 8 also stores a fertilization map of the field where variable fertilization work is performed. The operation unit 52 of the display device 5 is composed of a touch panel, and the touch panel is integrated into the surface of the display unit 51.

Figure 5 is a diagram showing an example of screen transitions of the display device 5 according to the first embodiment. When an operator performs fertilization work in a field, the control unit 53 first displays the field selection screen 100 on the display unit 51. Specifically, the control unit 53 acquires information on fields close to the position of the rice transplanter 1 detected by the positioning unit 4 from the storage unit 8, and generates the field selection screen 100 using the acquired field information. In the illustrated example, the X field closest to the current position of the rice transplanter 1, the Y field second closest, and the Z field third closest are listed. The operator selects the field in which to perform fertilization work and presses the decision button. The operation unit 52 outputs the operation content performed by the operator (for example, pressing the decision button) to the control unit 53. Hereinafter, the operation of the operation unit 52 will not be described.

When the decision button on the field selection screen 100 is pressed, the control unit 53 changes the screen of the display unit 51 from the field selection screen 100 to the adjustment work screen 200. When the worker presses the variable fertilizer adjustment work button (variable fertilizer adjustment work button 221 in FIG. 6) on the adjustment work screen 200, the control unit 53 changes the screen of the display unit 51 from the adjustment work screen 200 to the variable fertilizer adjustment work screen 300. The control unit 53 displays the variable fertilizer adjustment work screen 300 while the worker is performing variable fertilizer adjustment work.

When the operator presses the cancel button (cancel button 332 in FIG. 7) on the variable fertilization adjustment work screen 300, the control unit 53 changes the screen on the display unit 51 from the variable fertilization adjustment work screen 300 to the variable fertilization work screen 400. The control unit 53 displays the variable fertilization work screen 400 while the rice transplanter 1 is performing variable fertilization work.

Alternatively, when the control unit 53 determines that the worker has started field work, the control unit 53 may automatically change the screen of the display unit 51 from the variable fertilization adjustment work screen 300 to the variable fertilization work screen 400. For example, the control unit 53 determines that the worker has started field work when the traveling speed of the traveling unit 2 detected by the vehicle speed sensor 19 becomes equal to or higher than a predetermined speed. Also, for example, the control unit 53 may monitor the power transmission path from the engine 10 to the planting unit 6 (for example, the planting clutch of the planting unit 6) to determine whether the worker has started field work. In addition, the fertilization controller 38 may determine whether the worker has started field work and notify the control unit 53 of the determination result.

The control unit 53 automatically changes from the variable fertilization adjustment work screen 300 to the variable fertilization work screen 400, eliminating the need for the worker to operate the screen between the end of the adjustment work and the start of field work.

When the worker presses the constant fertilizer adjustment work button (constant fertilizer adjustment work button 222 in FIG. 6) on the adjustment work screen 200, the control unit 53 changes the screen of the display unit 51 from the adjustment work screen 200 to the constant fertilizer adjustment work screen 500. The control unit 53 displays the constant fertilizer adjustment work screen 500 while the worker is performing the constant fertilizer adjustment work.

When the operator presses the cancel button (cancel button 532 in FIG. 12) on the constant fertilization adjustment work screen 500, the control unit 53 changes the screen on the display unit 51 from the constant fertilization adjustment work screen 500 to the constant fertilization work screen 600. The control unit 53 displays the constant fertilization work screen 600 while the rice transplanter 1 is performing the constant fertilization work.

Alternatively, when the control unit 53 determines that the worker has started field work, the control unit 53 may automatically change the screen of the display unit 51 from the constant fertilization adjustment work screen 500 to the constant fertilization work screen 600. The method of determining whether the worker has started field work is the same as the method described above.

The control unit 53 automatically changes from the fixed fertilization adjustment work screen 500 to the fixed fertilization work screen 600, eliminating the need for the worker to operate the screen between the end of the adjustment work and the start of field work.

Next, the details of the adjustment work screen 200, variable fertilizer adjustment work screen 300, variable fertilizer work screen 400, fixed fertilizer adjustment work screen 500, and fixed fertilizer work screen 600 shown in FIG. 5 will be described.

Figure 6 is a diagram showing an example of the adjustment work screen 200 displayed by the display device 5 according to the first embodiment. The adjustment work screen 200 is divided into a first display area 210, a second display area 220, and a third display area 230, from top to bottom. The first display area 210 displays a positioning accuracy icon 211, a slip rate correction icon 212, and field information 213, etc. The second display area 220 displays a variable fertilization adjustment work button 221 and a fixed fertilization adjustment work button 222. The third display area 230 displays a variable fertilization work button 231, a fixed fertilization work button 232, a fertilization work stop button 233, and an adjustment work button 234.

The positioning accuracy icon 211 is an icon that represents the positioning accuracy of the positioning unit 4. The control unit 53 acquires the positioning accuracy from the positioning unit 4, and changes the display mode of the positioning accuracy icon 211 according to the acquired positioning accuracy. For example, the control unit 53 makes the positioning accuracy icon 211 green when the positioning accuracy is high, and makes the positioning accuracy icon 211 red when the positioning accuracy is low. The display mode is not limited to this.

The slip ratio correction icon 212 is an icon that indicates whether or not the fertilizer controller 38 is performing slip ratio correction. The control unit 53 acquires from the fertilizer controller 38 whether or not slip ratio correction is being performed, and changes the display mode of the slip ratio correction icon 212 according to the acquired result. For example, the control unit 53 makes the slip ratio correction icon 212 brighter (or darker) when the fertilizer controller 38 is performing slip ratio correction, and makes the slip ratio correction icon 212 darker (or lighter) when the slip ratio correction is not being performed. The display mode is not limited to this.

The field information 213 is information about the field in which the rice transplanter 1 operates. Because field X was selected on the field selection screen 100 in FIG. 5, the control unit 53 displays information about field X as field information 213. The field information 213 includes at least the name of the field, and may include the address and size of the field in addition to the name of the field. The information on which the field information 213 is based is pre-stored in the storage unit 8.

The variable fertilizer adjustment work button 221 is a button for displaying the variable fertilizer adjustment work screen 300 on the display unit 51 when the worker is performing variable fertilizer adjustment work. When the variable fertilizer adjustment work button 221 is pressed, the control unit 53 changes the screen of the display unit 51 from the adjustment work screen 200 shown in FIG. 6 to the variable fertilizer adjustment work screen 300 shown in FIG. 7.

The constant fertilizer adjustment work button 222 is a button for displaying the constant fertilizer adjustment work screen 500 on the display unit 51 when the worker is performing constant fertilizer adjustment work. When the constant fertilizer adjustment work button 222 is pressed, the control unit 53 changes the screen of the display unit 51 from the adjustment work screen 200 shown in FIG. 6 to the constant fertilizer adjustment work screen 500 shown in FIG. 12.

The variable fertilization work button 231 is a button for displaying the variable fertilization work screen 400 on the display unit 51 when the worker is performing variable fertilization work. When the variable fertilization work button 231 is pressed, the control unit 53 changes the screen of the display unit 51 from the amount adjustment work screen 200 shown in FIG. 6 to the variable fertilization work screen 400 shown in FIG. 11.

The constant fertilization work button 232 is a button for displaying the constant fertilization work screen 600 on the display unit 51 when the worker is performing constant fertilization work. When the constant fertilization work button 232 is pressed, the control unit 53 changes the screen of the display unit 51 from the amount adjustment work screen 200 shown in FIG. 6 to the constant fertilization work screen 600 shown in FIG. 13.

The fertilization work stop button 233 is a button for displaying a fertilization work stop screen 700 (see FIG. 14) on the display unit 51 when the operator stops the fertilization work of the fertilizer applicator 3. When the fertilization work stop button 233 is pressed, the control unit 53 changes the screen of the display unit 51 from the dosage adjustment work screen 200 shown in FIG. 6 to the fertilization work stop screen 700 shown in FIG. 14.

The adjustment work button 234 is a button for displaying the adjustment work screen 200 on the display unit 51 when the worker is performing adjustment work. In FIG. 6, the adjustment work screen 200 is displayed.

As described above, the worker can press the variable fertilization work button 231, the fixed fertilization work button 232, the fertilization work stop button 233, and the amount adjustment work button 234 in the third display area 230 to display a screen showing the work content corresponding to these buttons even in the middle of the screen transition shown in Figure 5.

The variable fertilization work button 231, the fixed fertilization work button 232, the fertilization work stop button 233, and the amount adjustment work button 234 in the third display area 230 function not only as buttons that can be operated by the worker, but also as icons indicating which work content is currently selected. Since the amount adjustment work is selected in FIG. 6, the control unit 53 makes the amount adjustment work button 234 corresponding to the amount adjustment work brighter (or darker), and makes the remaining variable fertilization work button 231, the fixed fertilization work button 232, and the fertilization work stop button 233 darker (or lighter). The display mode is not limited to this, and it is sufficient that the selected work content and the non-selected work content can be distinguished. Also, since the amount adjustment work is selected in FIG. 6, the control unit 53 displays the variable fertilization amount adjustment work button 221 and the fixed fertilization amount adjustment work button 222 representing the amount adjustment work in the second display area 220.

Figure 7 is a diagram showing an example of the variable fertilizer adjustment work screen 300 displayed by the display device 5 according to embodiment 1. Figure 8 is a diagram showing a first transition screen of the variable fertilizer adjustment work screen 300 displayed by the display device 5 according to embodiment 1. Figure 9 is a diagram showing a second transition screen of the variable fertilizer adjustment work screen 300 displayed by the display device 5 according to embodiment 1. Figure 10 is a diagram showing a third transition screen of the variable fertilizer adjustment work screen 300 displayed by the display device 5 according to embodiment 1.

The variable fertilization adjustment work screen 300 is divided into a first display area 310, a second display area 320, and a third display area 330, from top to bottom. The first display area 310 displays "Adjustment (variable fertilization)," which represents the variable fertilization adjustment work, which is the currently selected work content. The control unit 53 may display field information similar to the field information 213 shown in FIG. 6, in the first display area 310.

The second display area 320 displays the contents of the variable fertilizer adjustment work. As the variable fertilizer adjustment work progresses, the screens of the display unit 51 change in the order of Figures 7 to 10. In each of the screens of Figures 7 to 10, the control unit 53 makes the work content that the worker is to perform brighter (or darker) and the work content that the worker is not to perform darker (or lighter). The display mode is not limited to this, and it is sufficient that the work content that the worker is to perform can be distinguished from the work content that the worker is not to perform.

In the second display area 320, the set value corresponds to the increase/decrease ratio of the fertilizer amount adjustment. The input value for the amount of fertilizer delivered corresponds to the amount of fertilizer delivered. The recommended set value corresponds to the recommended increase/decrease ratio.

In the variable fertilization adjustment work, the control unit 53 first displays the variable fertilization adjustment work screen 300 of FIG. 7. The control unit 53 illuminates the plus button 321, the minus button 322, the set value (110% in FIG. 7), and the delivery amount confirmation button 323. The worker first operates the plus button 321 and the minus button 322 to increase or decrease the set value, presses the decision button 331, and then presses the delivery amount confirmation button 323. The control unit 53 changes the display of the set value according to the operation of the plus button 321 and the minus button 322. When the delivery amount confirmation button 323 is pressed, the control unit 53 notifies the fertilization controller 38 of the set value when the decision button 331 was pressed, instructs the start of delivery, and causes the display unit 51 to display the variable fertilization adjustment work screen 300 of FIG. 8.

When the fertilizer controller 38 receives an instruction from the control unit 53 to start dispensing, it operates the electric motor 33 at the set value of "110%" notified by the control unit 53 for a specified time, dispensing fertilizer from the conveying hose 34. The operator measures the weight of the fertilizer coming out of the conveying hose 34. Here, it is assumed that the measurement result is "225 g."

As shown in FIG. 8, the control unit 53 illuminates the plus button 321, the minus button 322, the set value (110% in FIG. 8), the payout amount confirmation button 323, the payout amount input value (g/230 in FIG. 8), the plus button 324, and the minus button 325. The payout amount input value "230" represents the weight of 230 g of fertilizer to be paid out from the conveying hose 34 in a specified time when the set value is "100%" and in an ideal usage environment. The set value "100%" corresponds to the dial value of the current fertilizer application amount dial 37. The operator operates the plus button 324 and the minus button 325 to increase or decrease the payout amount input value, inputting the measurement result of the paid out amount of fertilizer "225 g" and pressing the decision button 331. The control unit 53 changes the display of the payout amount input value in response to the operation of the plus button 324 and the minus button 325. When the decision button 331 is pressed, the control unit 53 calculates the recommended setting value using the setting value "110%" and the payout input value "225g". The formula for calculating the recommended setting value is preset in the control unit 53. The recommended setting value is a setting value that results in a payout input value of "230g".

As shown in FIG. 9, the control unit 53 illuminates the plus button 321, the minus button 322, the set value (110% in FIG. 9), the payout amount input value (225 g/230 in FIG. 9), the plus button 324, the minus button 325, and the recommended set value (112% in FIG. 9). Referring to the recommended set value "112%", the operator operates the plus button 321 and the minus button 322 to change the set value from "110%" to "112%" and presses the decision button 331.

When the decision button 331 is pressed on the variable fertilizer application adjustment work screen 300 in FIG. 9, the control unit 53 illuminates the plus button 321, the minus button 322, the set value (112% in FIG. 10), the delivery amount confirmation button 323, and the recommended set value (112% in FIG. 10) as shown in FIG. 10. The operator presses the delivery amount confirmation button 323. When the delivery amount confirmation button 323 is pressed, the control unit 53 notifies the fertilizer application controller 38 of the set value. The fertilizer application controller 38 operates the electric motor 33 at the set value "112%" notified by the control unit 53 for a predetermined time, and delivers fertilizer from the conveying hose 34. The operator measures the weight of the fertilizer coming out of the conveying hose 34 and checks whether the measurement result is "230 g". The final set value and delivery amount input value are determined by the operator.

The third display area 330 displays a decision button 331 and a cancel button 332. The decision button 331 is a button that allows the operator to end the operation of increasing or decreasing the set value and the input value of the payout amount. When the decision button 331 is pressed, the operation of the control unit 53 is as described above.

The cancel button 332 is a button for displaying the variable fertilization work screen 400 when the worker has finished the variable fertilization adjustment work. When the cancel button 332 is pressed, the control unit 53 changes the screen of the display unit 51 from the variable fertilization adjustment work screen 300 to the variable fertilization work screen 400.

Figure 11 is a diagram showing an example of a variable fertilization work screen 400 displayed by the display device 5 according to embodiment 1. The variable fertilization work screen 400 is divided into a first display area 410, a second display area 420, and a third display area 430, from top to bottom.

The first display area 410 displays a positioning accuracy icon 411, a slip rate correction icon 412, and field information 413. The information displayed in the first display area 410 of the variable fertilization work screen 400 is the same as the information displayed in the first display area 210 of the adjustment work screen 200, so a description thereof will be omitted.

The second display area 420 displays information such as a variable fertilization operation icon 421, the increase/decrease ratio of the fertilizer amount adjustment 422, and the current fertilizer amount 423.

The variable fertilization work icon 421 is an icon that represents variable fertilization work. The control unit 53 displays information about the work being performed by the rice transplanter 1 as an icon. The control unit 53 may also display a character string such as "variable fertilization."

The fertilizer amount adjustment increase/decrease ratio 422 is the setting value finally determined by the worker in the variable fertilizer adjustment work. In other words, the fertilizer amount adjustment increase/decrease ratio 422 is the setting value on the variable fertilizer adjustment work screen 300 in FIG. 10.

The current fertilizer amount 423 is information that indicates the current amount of fertilizer applied by the fertilizer applicator 3. The control unit 53 acquires the fertilizer amount for the area corresponding to the position of the rice transplanter 1 detected by the positioning unit 4 from the fertilization map stored in the storage unit 8, and multiplies the acquired fertilizer amount by the fertilizer amount adjustment increase/decrease ratio 422 of "112%" to calculate the current fertilizer amount 423 of "41 kg/10 a". The control unit 53 causes the display unit 51 to display the calculated fertilizer amount "41 kg/10 a". The control unit 53 also notifies the fertilizer controller 38 of the calculated fertilizer amount "41 kg/10 a" and the traveling speed of the traveling unit 2.

It is preferable that the control unit 53 displays the variable fertilization work icon 421, the fertilizer amount adjustment increase/decrease ratio 422, and the current fertilizer amount 423 in this order from left to right. By displaying them in this order, the worker can intuitively understand the work content.

The third display area 430 displays a variable fertilization work button 431, a constant fertilization work button 432, a fertilization work stop button 433, and an amount adjustment work button 434. The information displayed in the third display area 430 of the variable fertilization work screen 400 is the same as the information displayed in the third display area 230 of the amount adjustment work screen 200, so a description is omitted. However, in FIG. 11, because variable fertilization work is selected, the control unit 53 makes the variable fertilization work button 431 brighter (or darker) and makes the remaining constant fertilization work button 432, fertilization work stop button 433, and amount adjustment work button 434 darker (or lighter).

Figure 12 is a diagram showing an example of a constant fertilization adjustment work screen 500 displayed by the display device 5 according to the first embodiment. The constant fertilization adjustment work screen 500 is divided into a first display area 510, a second display area 520, and a third display area 530, from top to bottom. The first display area 510 displays "Adjustment (Constant Fertilization)", which indicates the constant fertilization adjustment work, which is the currently selected work content. The control unit 53 may display field information similar to the field information 213 shown in Figure 6, in the first display area 510.

The second display area 520 displays the contents of the fixed fertilizer adjustment work. As with the variable fertilizer adjustment work, the contents of the second display area 520 displayed on the display unit 51 change as the fixed fertilizer adjustment work progresses. Illustrations and detailed explanations of screen transitions are omitted.

The second display area 520 displays a plus button 521, a minus button 522, a set value (5.3 in FIG. 12), a payout amount confirmation button 523, a payout amount input value (225 g in FIG. 12), a plus button 524, a minus button 525, and a target fertilizer application amount (45 kg/10a in FIG. 12).

Assume that the operator is preparing to adjust the amount of fertilizer applied by the fertilizer applicator 3 to 50 kg/10a in preparation for a fixed fertilization operation. The operator first operates the plus button 521 and the minus button 522 to increase or decrease the set value, presses the decision button 531, and then presses the payout amount confirmation button 523. The set value for the fixed fertilization adjustment operation matches the current dial value of the fertilizer amount dial 37. The control unit 53 changes the display of the set value in response to the operation of the plus button 521 and the minus button 522. When the payout amount confirmation button 523 is pressed, the control unit 53 instructs the fertilizer controller 38 to start payout.

When the fertilizer controller 38 receives an instruction from the control unit 53 to start dispensing, it operates the electric motor 33 for a specified time and dispenses fertilizer from the conveying hose 34. The operator measures the weight of the fertilizer dispensed from the conveying hose 34. Here, it is assumed that the measurement result is "225 g."

The operator operates the plus button 524 and the minus button 525 to increase or decrease the feed amount input value, inputting the measurement result of the fed amount of fertilizer of "225 g", and presses the decision button 531. The control unit 53 changes the display of the feed amount input value in response to the operation of the plus button 524 and the minus button 525. When the decision button 531 is pressed, the control unit 53 calculates the target fertilizer amount using the feed amount input value "225 g". The formula for calculating the target fertilizer amount is preset in the control unit 53. The target fertilizer amount is the amount of fertilizer applied by the fertilizer applicator 3 when the dial value of the fertilizer amount dial 37 is the current "5.3".

The operator refers to the target fertilizer amount of "45 kg/10a" and changes the dial value of the fertilizer amount dial 37 to "50 kg/10a". The operator operates the plus button 521 and the minus button 522 to increase or decrease the set value to the changed dial value, and presses the decision button 531 and the payout amount confirmation button 523. When the payout amount confirmation button 523 is pressed, the control unit 53 instructs the fertilizer application controller 38 to start payout. The fertilizer application controller 38 operates the electric motor 33 for a specified time to pay out fertilizer from the conveying hose 34. The operator measures the weight of the fertilizer coming out of the conveying hose 34 and increases or decreases the payout amount input value to display the adjusted target fertilizer amount. The final set value is decided by the operator.

The third display area 530 displays a decision button 531 and a cancel button 532. The decision button 531 is a button that allows the operator to end the operation of increasing or decreasing the set value and the input value of the payout amount. When the decision button 531 is pressed, the operation of the control unit 53 is as described above.

The cancel button 532 is a button for displaying the constant fertilization work screen 600 when the worker has finished the constant fertilization adjustment work. When the cancel button 532 is pressed, the control unit 53 changes the screen of the display unit 51 from the constant fertilization adjustment work screen 500 to the constant fertilization work screen 600.

Figure 13 is a diagram showing an example of a constant fertilization work screen 600 displayed by the display device 5 according to embodiment 1. The constant fertilization work screen 600 is divided into a first display area 610, a second display area 620, and a third display area 630, from top to bottom.

The first display area 610 displays a positioning accuracy icon 611, a slip rate correction icon 612, field information 613, and the like. The information displayed in the first display area 610 of the constant fertilization work screen 600 is the same as the information displayed in the first display area 210 of the amount adjustment work screen 200, so a description thereof will be omitted.

The second display area 620 displays information such as a fixed fertilization operation icon 621, a dial value 622, and a "dial" 623.

The constant fertilization work icon 621 is an icon that represents constant fertilization work. The control unit 53 displays information about the work being performed by the rice transplanter 1 as an icon. The control unit 53 may also display a character string such as "constant fertilization."

The dial value 622 is the dial value of the fertilizer amount dial 37 that is finally determined by the worker in the fixed fertilizer adjustment work. In other words, the dial value 622 is the setting value on the fixed fertilizer adjustment work screen 500 in FIG. 12. As described above, the worker has already performed the adjustment work, and is aware of the amount of fertilizer applied by the fertilizer applicator 3 when the dial value of the fertilizer amount dial 37 is "5.3". Therefore, the control unit 53 simply displays "dial" 623, which is the character string "dial".

It is preferable that the control unit 53 displays the fixed fertilization work icon 621, the dial value 622, and the "dial" 623 in this order from left to right. By displaying them in this order, the worker can intuitively understand the work content.

The third display area 630 displays a variable fertilization work button 631, a constant fertilization work button 632, a fertilization work stop button 633, and an amount adjustment work button 634. The information displayed in the third display area 630 of the constant fertilization work screen 600 is the same as the information displayed in the third display area 230 of the amount adjustment work screen 200, so a description is omitted. However, in FIG. 13, because a constant fertilization work is selected, the control unit 53 makes the constant fertilization work button 632 brighter (or darker) and makes the remaining variable fertilization work button 631, fertilization work stop button 633, and amount adjustment work button 634 darker (or lighter).

Figure 14 is a diagram showing an example of a fertilization work stop screen 700 displayed by the display device 5 according to the first embodiment. When any one of the fertilization work screen 200, the variable fertilization work screen 400, and the fixed fertilization work screen 600 is displayed on the display unit 51, if the operator presses the fertilization work stop button 233, 433, 633, the fertilization work stop screen 700 is displayed. In addition, the fertilization work of the fertilizer applicator 3 is stopped.

When the fertilization work stop button 233, the fertilization work stop button 433, or the fertilization work stop button 633 is pressed, the control unit 53 causes the display unit 51 to display the fertilization work stop screen 700. In addition, the control unit 53 instructs the fertilization controller 38 to stop the fertilization work, i.e., to stop the operation of the electric motor 33.

The fertilization work stop screen 700 is divided from top to bottom into a first display area 710, a second display area 720, and a third display area 730. The first display area 710 displays a positioning accuracy icon 711, a slip rate correction icon 712, field information 713, and the like. The information displayed in the first display area 710 of the fertilization work stop screen 700 is the same as the information displayed in the first display area 210 of the adjustment work screen 200, so a description thereof will be omitted. Note that if the worker has not selected a field, the control unit 53 does not display the field information 713.

The second display area 720 displays a fertilization work stop icon 721. The control unit 53 displays as an icon that the rice transplanter 1 is not performing variable fertilization work or fixed fertilization work, i.e., that fertilization work is stopped. The control unit 53 may also display a character string such as "Stopped."

The third display area 730 displays a variable fertilization work button 731, a fixed fertilization work button 732, a fertilization work stop button 733, and an adjustment work button 734. The information displayed in the third display area 730 of the fertilization work stop screen 700 is the same as the information displayed in the third display area 230 of the adjustment work screen 200, so a description is omitted. However, in FIG. 14, because fertilization work stop is selected, the control unit 53 brightens (or darkens) the fertilization work stop button 733 and darkens (or lightens) the remaining variable fertilization work button 731, fixed fertilization work button 732, and adjustment work button 734.

As described above with reference to Figs. 1 to 14, the display device 5 according to the first embodiment includes a display unit 51 and a control unit 53. The control unit 53 displays information about the field in which the rice transplanter 1 is working in the first display area of the display unit 51, and displays information about the work content to be performed by the rice transplanter 1 in the second display area of the display unit 51. This makes it possible to provide a display device 5 that allows the operator to compare the field in which the operator is working with the work content. Furthermore, by providing the rice transplanter 1 with the display device 5, it is possible to provide a rice transplanter 1 that allows the operator to compare the field in which the operator is working with the work content.

The control unit 53 displays icons representing the work content, such as a variable fertilization work icon 421, a fixed fertilization work icon 621, and a fertilization work stop icon 721, in the second display area. This allows the worker to intuitively understand the work content.

The control unit 53 displays an icon representing the variable fertilization work, the increase/decrease ratio of the fertilization amount adjustment, and the current fertilization amount in the second display area, as in the variable fertilization work screen 400 shown in FIG. 11. Because the information necessary for variable fertilization work is displayed, the worker can easily perform the work.

The control unit 53 displays, in the second display area, an icon representing a variable fertilization task, the increase/decrease ratio of the fertilizer amount adjustment, and the current fertilizer amount, arranged in that order from left to right, as in the variable fertilization task screen 400 shown in FIG. 11. The relationship between each piece of information leading to the current fertilizer amount is displayed in order, allowing the worker to intuitively grasp the task content.

The control unit 53 places the second display area between the first display area and the third display area. The control unit 53 displays in the third display area a number of icons corresponding to a number of work contents that the rice transplanter 1 can perform, such as a variable fertilization work button 231, a fixed fertilization work button 232, a fertilization work stop button 233, and an amount adjustment work button 234, and changes the icon corresponding to the information on the work contents being displayed in the second display area to a display mode different from that of the remaining icons. This allows the worker to check information on a number of work contents on the screen of the display unit 51.

The display device 5 includes an operation unit 52 that accepts a selection operation by the worker. The control unit 53 displays icons corresponding to variable fertilization work, fixed fertilization work, and amount adjustment work in the third display area as multiple icons corresponding to multiple work contents, and also displays information on the work contents based on the selection operation accepted by the operation unit 52 in the second display area. In addition, as shown in the amount adjustment work screen 200 shown in FIG. 6, when the operation unit 52 accepts a selection operation for an amount adjustment work, the control unit 53 displays information on the amount adjustment work for each of the fixed fertilization work and the variable fertilization work in the second display area. This allows the worker to perform amount adjustment work for variable fertilization work and amount adjustment work for fixed fertilization work.

The control unit 53 displays the increase/decrease ratio of the fertilizer amount adjustment, the delivered fertilizer amount, and the recommended increase/decrease ratio in the second display area as information on the adjustment work for variable fertilization work, as shown in the variable fertilization adjustment work screen 300 in FIG. 7. Since the recommended increase/decrease ratio is displayed as the increase/decrease ratio of the fertilizer amount adjustment when performing variable fertilization work, it is easy for the worker to perform the adjustment work.

The control unit 53 calculates and displays a recommended increase/decrease ratio based on the increase/decrease ratio of the fertilizer amount adjustment received by the operation unit 52 from the worker and the amount of fertilizer applied. The recommended increase/decrease ratio is displayed as the increase/decrease ratio of the fertilizer amount adjustment when performing variable fertilization work, making it easy for the worker to perform the adjustment work.

When the rice transplanter 1 starts fertilization work while information on the amount of fertilization work for variable fertilization work or fixed fertilization work is displayed in the second display area, the control unit 53 switches the display in the second display area to information on variable fertilization work. This reduces the effort required for the operator to operate the screen.

The above describes an embodiment of the present invention with reference to the drawings (Figs. 1 to 14). However, the present invention is not limited to the above embodiment, and can be implemented in various aspects without departing from the gist of the present invention.

In the first embodiment, fertilization work is exemplified as the work content displayed by the display device 5, but this is not limited thereto. For example, the display device 5 may display information on planting work, etc.

In the first embodiment, the display unit 51 is configured to be divided into a first display area, a second display area, and a third display area in top-to-bottom order, but this is not limited thereto. For example, the display unit 51 may be configured to be divided into a first display area, a second display area, and a third display area in bottom-to-top order. Also, for example, the display unit 51 may be configured to be divided into a first display area, a second display area, and a third display area in left-to-right order or right-to-left order.

In addition, in the first embodiment, the variable fertilization work icon 421, the fertilizer amount adjustment increase/decrease ratio 422, and the current fertilizer amount 423 are displayed in order from left to right, but they may also be displayed in order from top to bottom. Similarly, the fixed fertilization work icon 621, the dial value 622, and the "dial" 623 may be displayed in order from top to bottom.

In the first embodiment, the display unit 51 and operation unit 52 of the display device 5 are configured as an integrated unit. Therefore, the variable fertilization adjustment work button, fixed fertilization adjustment work button, variable fertilization work button, fixed fertilization work button, fertilization work stop button, adjustment work button, plus button, minus button, decision button, and cancel button displayed on the display unit 51 are treated as operable icon buttons. On the other hand, if the operation unit 52 is configured as a hard button or the like separate from the display unit 51, each of the above buttons functions simply as an icon.

The drawings are primarily schematic, showing each component, for ease of understanding. Therefore, the thickness, length, etc. of each component shown in the drawings may differ from the actual ones due to the convenience of creating the drawings.

The display device according to the present invention is suitable for use in agricultural machinery such as rice transplanters and tractors.

LIST OF SYMBOLS 1 Rice transplanter 2 Travel unit 3 Fertilizer applicator 4 Positioning unit 5 Display device 6 Planting unit 7 Holder 8 Storage unit 10 Engine 11 Transmission case 12 Front wheels 13 Rear wheels 14 Driver's seat 15 Steering wheel 16 Pedal 17 Bonnet 18 Dashboard 19 Vehicle speed sensor 31 Fertilizer tank 32 Feed unit 33 Electric motor 34 Transport hose 35 Blower 36 Feed body 37 Fertilizer amount dial 38 Fertilizer controller 51 Display unit 52 Operation unit 53 Control unit 61 Lifting link mechanism 62 Planting unit 63 Seedling carrier 64 Lifting cylinder 100 Field selection screen 200 Amount adjustment work screen 210, 310, 410, 510, 610, 710 First display area 211, 411, 611, 711 Positioning accuracy icon 212, 412, 612, 712 Slip rate correction icon 213, 413, 613, 713 Field information 220, 320, 420, 520, 620, 720 Second display area 221 Variable fertilization adjustment work button 222 Fixed fertilization adjustment work button 230, 330, 430, 530, 630, 730 Third display area 231, 431, 631, 731 Variable fertilization work button 232, 432, 632, 732 Fixed fertilization work button 233, 433, 633, 733 Fertilization work stop button 234, 434, 634, 734 Adjustment work button 300 Variable fertilization adjustment work screen 321, 324, 521, 524 Plus button 322, 325, 522, 525 Minus button 323, 523 Feed amount confirmation buttons 331, 531 Decision buttons 332, 532 Cancel button 400 Variable fertilization work screen 421 Variable fertilization work icon 422 Increase/decrease ratio of fertilizer amount adjustment 423 Current fertilizer amount 500 Fixed fertilization adjustment work screen 600 Fixed fertilization work screen 621 Fixed fertilization work icon 622 Dial value 623 "Dial"
700 Fertilization work stop screen 721 Fertilization work stop icon

Claims (9)

A display unit;
a control unit that displays information about a field in which the agricultural work machine is to work in a first display area of the display unit and displays information about the work content to be performed by the agricultural work machine in a second display area of the display unit ,
The control unit disposes the second display area between the first display area and the third display area, displays a plurality of icons corresponding to a plurality of work contents that can be performed by the agricultural working machine in the third display area, and changes the display mode of the icon corresponding to information on the work content being displayed in the second display area to a different mode from that of the remaining icons.
Display device. The display device according to claim 1, wherein the control unit causes an icon representing the work content to be displayed in the second display area. The display device according to claim 1, wherein the control unit causes the second display area to display an icon representing a variable fertilization operation in which the agricultural work machine travels while changing the amount of fertilization, the increase/decrease ratio of the fertilizer amount adjustment, and the current amount of fertilization. The display device according to claim 3, wherein the control unit displays the icon representing the variable fertilization work, the increase/decrease ratio of the fertilizer amount adjustment, and the current fertilizer amount in the vertical or horizontal direction in the second display area. An operation unit is provided for accepting a selection operation by an operator,
The control unit displays in the third display area the multiple icons corresponding to the multiple work contents, including variable fertilization work in which the agricultural work machine runs while changing the amount of fertilizer, constant fertilization work in which the agricultural work machine runs at a constant amount of fertilizer, and adjustment work in which the amount of fertilizer applied by the agricultural work machine is adjusted, and displays in the second display area information on work contents based on a selection operation accepted by the operation unit, and when the operation unit accepts a selection operation for the adjustment work, displays in the second display area information on the adjustment work for each of the constant fertilization work and the variable fertilization work. The display device described in any one of claims 1 to 4 . The display device described in claim 5, wherein the control unit displays the increase/decrease ratio of the fertilizer amount adjustment, the delivered fertilizer amount, and the recommended increase/decrease ratio in the second display area as information about the adjustment work of the variable fertilization work. The control unit calculates and displays the recommended increase/decrease ratio based on the increase/decrease operation of the increase/decrease ratio of the fertilizer amount adjustment received by the operation unit from the operator and the amount of fertilizer applied.
The display device according to claim 6 . A display device as described in any one of claims 5 to 7, wherein when the agricultural machine starts fertilization work while information on the variable fertilization work or the amount adjustment work of the constant fertilization work is displayed in the second display area, the control unit switches the display of the second display area to information on the variable fertilization work. An agricultural machine comprising the display device according to any one of claims 1 to 8 .

Images