JP2019017251A - Work vehicle - Google Patents

Abstract

To prompt an operator to reliably and quickly respond to abnormality.SOLUTION: A combine-harvester 1 includes a liquid crystal display part 19, and a controller 20 for controlling display of the liquid crystal display part 19. When an abnormality occurs in a machine body, the controller 20 causes the liquid crystal display part 19 to display abnormality notification in an enlarged display state (or a normal display state), in response to a prescribed operation of an operator, changes over the abnormality notification into a reduced display state (or a nondisplay state), and, on the basis of a prescribed condition, automatically redisplays the abnormality notification in the reduced display state (or the nondisplay state) into the enlarged display state (or the normal display state).SELECTED DRAWING: Figure 5

Description

  The present invention relates to a working vehicle such as a combine equipped with a liquid crystal display.

  A working vehicle including a liquid crystal display unit is known (see, for example, Patent Document 1). With this type of work vehicle, various status displays and setting operations can be performed using the liquid crystal display, so the number of parts is reduced compared to the case where individual displays (meters, etc.) and setting tools are provided. In addition to this, there is an advantage that status confirmation and setting operations are facilitated.

  Also, in this type of work vehicle, when an abnormality occurs in the fuselage, it is possible to display an abnormality notification on the liquid crystal display unit, but this is an abnormality that does not require urgency and can continue work. Nevertheless, when the abnormality notification is continuously displayed on the liquid crystal display unit, the information necessary for the work cannot be displayed due to the abnormality notification, and the workability may be lowered.

  Therefore, in the working vehicle of Patent Document 1, the abnormality notification that is displayed on the liquid crystal display unit can be switched to the reduced display state according to a predetermined operation by the operator, thereby generating an abnormality that does not require urgency. In some cases, the work can be continued while displaying information necessary for the work on the liquid crystal display.

JP 2017-30660 A

  However, in the working vehicle of Patent Document 1, when the operator switches the abnormality notification to the reduced display state by a predetermined operation, the operator forgets that the abnormality has occurred and may fail to deal with the abnormality.

The present invention was created in view of the above-described circumstances and has been created for the purpose of solving these problems. The invention of claim 1 provides a liquid crystal display unit and a display for controlling the display of the liquid crystal display unit. A control vehicle, and the display control unit includes an abnormality determining means for determining abnormality of the aircraft, and an enlarged display state or a normal display on the liquid crystal display unit when the abnormality occurs in the aircraft An abnormality notification display means for displaying an abnormality notification of a state, an abnormality notification display switching means for switching the abnormality notification to a reduced display state or a non-display state according to a predetermined operation by an operator, and a reduced display state based on a predetermined condition. Or an abnormality notification re-display unit that automatically redisplays the abnormality notification in the non-display state in the enlarged display state or the normal display state.
The invention according to claim 2 is the working vehicle according to claim 1, wherein the display control unit automatically displays the abnormality notification in a reduced display state or a non-display state in an enlarged display state or a normal display. It is characterized by comprising display content changing means for changing the display content of the abnormality notification when redisplaying in the state.
The invention according to claim 3 is the working vehicle according to claim 1 or 2, wherein the predetermined condition is an operation of an aircraft or an operation of an aircraft.
The invention according to claim 4 is the working vehicle according to claim 1 or 2, wherein the predetermined condition is detection or non-detection of a harvested product.
The invention according to claim 5 is the work traveling vehicle according to claim 1 or 2, wherein the predetermined condition is a position of the fuselage.
The invention according to claim 6 is the working traveling vehicle according to any one of claims 1 to 5, wherein the first abnormality notification is an abnormality in the airframe and the vehicle speed is a predetermined speed. It is displayed in the following cases.

According to the first aspect of the invention, the abnormality notification in the reduced display state or the non-display state is automatically redisplayed in the enlarged display state or the normal display state based on the predetermined condition. Can be urged.
Further, according to the invention of claim 2, when the abnormality notification in the reduced display state or the non-display state is automatically redisplayed in the enlarged display state or the normal display state, the display content of the abnormality notification is changed. Increasing the importance and urgency of abnormality response step by step like “Caution → Warning → Danger” can prevent the response to the abnormality from being delayed or forgotten.
Further, according to the invention of claim 3, since the predetermined condition is the aircraft operation or the aircraft operation, while avoiding re-display of the abnormality notification during the work as much as possible, The abnormality notification can be displayed again at the break, and a response to the abnormality can be promoted.
Further, according to the invention of claim 4, since the predetermined condition is detection or non-detection of the harvest, while avoiding the re-display of the abnormality notification during the work as much as possible, the work start, the work end, etc. It is possible to redisplay the abnormality notification at a work break, and to prompt a response to the abnormality.
Further, according to the invention of claim 5, since the predetermined condition is the position of the machine body, an abnormality notification is made when entering the field, leaving the field, etc. while avoiding redisplay of the abnormality notification during the work as much as possible. Can be re-displayed and response to abnormalities can be encouraged.
According to the invention of claim 6, the first abnormality notification is displayed when an abnormality occurs in the airframe and the vehicle speed is equal to or lower than the predetermined speed, so that the abnormality notification is displayed during traveling. It is possible to prevent problems caused by

It is a left view of the combine which concerns on embodiment of this invention. It is a top view of the combine which concerns on embodiment of this invention. It is a figure which shows the fuel supply path | route of the combine which concerns on embodiment of this invention. It is a top view which shows the control part of the combine which concerns on embodiment of this invention. It is a figure which shows the display screen of the liquid crystal display part of the combine which concerns on embodiment of this invention, (a) is a figure which shows the state by which abnormality notification (Sedimenter water sensor operation | movement (attention)) was displayed on the normal display screen, b) is a diagram showing a state in which the abnormality notification (sedimenter water sensor operation) is reduced and displayed on the normal display screen, and (c) is a state in which the abnormality notification (sedimenter water sensor operation (warning)) is displayed on the normal display screen. FIG. It is a block diagram which shows the input / output of the control apparatus of the combine which concerns on embodiment of this invention. It is a flowchart which shows the alerting | reporting control (main routine) of the combine control apparatus which concerns on embodiment of this invention. It is a flowchart which shows the cementer water drain alerting | reporting control of the control apparatus of the combine which concerns on embodiment of this invention. It is a flowchart which shows the process at the time of the engine starting performed in the sedimenter draining alerting | reporting control. It is a flowchart which shows the fuel tank maintenance alerting | reporting control (fuel tank maintenance alerting | reporting control) of the control apparatus of the combine which concerns on embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1-3, 1 is a combine (working traveling vehicle), and the combine 1 includes a harvesting unit 2 that harvests stalks, a threshing unit 3 that threshs and selects grains from the stalks, and A grain tank 4 for storing the selected grains, an auger 5 for carrying the grains in the grain tank 4 out of the machine, a post-processing unit 6 for post-processing the threshed waste, and an operator board the board. A control unit 7 and a crawler type traveling unit 8 are provided.

  An engine 9 is mounted below the control unit 7. As shown in FIG. 3, the engine 9 performs a combustion operation with the fuel supplied from the fuel tank 10, and engine power output along with the combustion operation is transmitted to each part of the combine 1. In a fuel supply path 11 from the fuel tank 10 to the engine 9, a fuel pump 12 that sucks fuel in the fuel tank 10 and sends it to the engine 9, and a cementer that separates moisture contained in the fuel upstream of the fuel pump 12. 13 and a fuel filter 14 for filtering fuel on the downstream side of the fuel pump 12 are provided.

  The cementer 13 includes a water storage unit 13a that stores water separated from the fuel, and a water detection sensor 13b (see FIG. 6: water content detection means) that detects the amount of water stored in the water storage unit 13a. The water detection sensor 13b according to the present embodiment maintains an OFF state when the amount of water collected in the water storage unit 13a is at a level that does not require draining operation, and the amount of water collected in the water storage unit 13a remains drained. Is an ON / OFF switch that switches to an ON state when a level that requires the above is exceeded, but it may also be one that detects the amount of water accumulated in the water reservoir 13a in multiple or stepless manner. The water contained in the fuel is mainly water accumulated in the fuel tank 10 due to condensation.

  As shown in FIG. 4, a driver's seat 15 on which an operator sits is provided in the control unit 7, and a multi-steering lever 16, a main transmission lever 17, a sub-transmission lever 18, a liquid crystal display unit 19, etc. Has been placed.

  The multi-steering lever 16 is a joystick-type operating lever disposed on the front right side of the driver's seat 15, and a cutting / lifting operation tool that moves the cutting unit 2 up and down based on the operation in the front-rear direction and the operation in the left-right direction. It is also used as a steering operation tool that changes the direction of the aircraft.

  The main transmission lever 17 and the auxiliary transmission lever 18 are arranged on the left side of the driver seat 15. One main transmission lever 17 serves both as a continuously variable transmission operation tool for continuously changing the traveling speed and a forward / reverse switching operation tool for switching between forward and backward travel, and the other auxiliary transmission lever 18 is provided by the main transmission lever 17. This is a stepped gear changer that switches the shift range in stages.

  The liquid crystal display unit 19 is a touch panel type liquid crystal display in which a touch panel 19b is stacked on a liquid crystal panel 19a, and is disposed at the front left and right center of the driver's seat 15. The liquid crystal display unit 19 is connected to a control device 20 (see FIG. 6: display control unit) described later, and display control is performed by the control device 20.

  As shown in FIG. 5, the control device 20 displays a plurality of touch operation buttons 21 a to 21 e on the liquid crystal display unit 19, and the display screen of the liquid crystal display unit 19 according to the touch operation of each touch operation button 21 a to 21 e. Switch. On the switchable display screen, a setting screen (not shown) capable of various setting operations, a camera image display screen (not shown) for displaying a camera image, and information necessary for work are simply displayed. A simple display screen (not shown) and a normal display screen A (see FIG. 5B) for displaying in detail information necessary for work are included.

  As shown in FIG. 5B, the normal display screen A includes a touch operation button display area a that displays the touch operation buttons 21 a to 21 e and a basic information group that is highly important among information related to the aircraft. A basic information display area b for displaying, an auxiliary information display area c for displaying an auxiliary information group that is less important than the basic information group b among information relating to the aircraft, and an alarm display area d for displaying various alarms The touch operation button display area a is secured at the left end of the normal display screen A, and the basic information display area b is in the left half of the normal display screen A excluding the touch operation button display area a. The attached information display area c is secured in the right half of the normal display screen A excluding the touch operation button display area a, and the alarm display area d is secured in the lower end of the normal display screen A. Incidentally, the basic information group of this embodiment includes direction indicator information, work light information, engine rotation information, vehicle speed information, fuel information, engine load factor information, tank capacity information, etc. Aircraft tilt information, chaff sheave opening information, Chinese wind volume information, etc. are included.

  As shown in FIG. 5A, the control device 20 causes the liquid crystal display unit 19 to display an abnormality notification H <b> 1 when an abnormality occurs in the airframe. An abnormality notification H1 shown in (a) of FIG. 5 is a notification for prompting the draining operation of the segmenter 13 (hereinafter, also referred to as a “segimentor notification as appropriate”), and is displayed in response to the ON of the water detection sensor 13b described above. The The abnormality notification H1 is displayed by a pop-up window that overlaps the basic information display area b and the attached information display area c. In the display area, “sedimenter water sensor operation” indicating an abnormality content and “sedimenter inside” indicating a countermeasure method are displayed. "Drain water from the drain of the sedimentator" and "Caution" indicating the notification level are included. The abnormality notification of the present invention is not limited to the abnormality notification H1 (including H2 and Hs) that prompts the draining operation of the cementer 13, but includes notification of various abnormalities.

  As shown in FIGS. 5A and 5B, the abnormality notification H1 can be switched between an enlarged display and a reduced display according to a manual operation. That is, at the beginning of the display of the abnormality notification H1, attention is paid to the abnormality by the enlarged display shown in FIG. 5A. However, if the abnormality can be continued even if it occurs, the abnormality notification H1 is reduced. By switching to the display, priority can be given to the display of the basic information display area b and the auxiliary information display area c necessary for the work. In this embodiment, when the abnormality notification H1 shown in FIG. 5A is touched (tapped), as shown in FIG. 5B, the abnormality notification Hs in the reduced state is displayed in the alarm display area d at the bottom of the screen. Is displayed. In the reduced state abnormality notification Hs, the countermeasure method for the abnormality is not displayed, and only the abnormality content is displayed. Further, when the abnormality notification Hs in the reduced state is touch-operated, the enlarged abnormality notification H1 shown in FIG.

  According to such an abnormality notification reduction display function, it is possible to prioritize the display of the basic information display area b and the auxiliary information display area c necessary for the work and continue the work, but an abnormality has occurred. There is a risk of forgetting things and neglecting to deal with abnormalities. Therefore, the control device 20 according to the embodiment of the present invention automatically enlarges and displays the reduced display state abnormality notification Hs based on a predetermined condition. As a result, a reliable and prompt response to the abnormality can be promoted. In the present embodiment, the enlarged display state abnormality notification H1 is switched to the reduced display state abnormality notification Hs in accordance with a predetermined human operation, and the enlarged display state abnormality notification H1 (or automatically) based on a predetermined condition. In H2), the abnormality notification in the enlarged display state or the normal display state is switched to the non-display state according to a predetermined human operation, and the abnormality notification is automatically displayed in the enlarged display state or the normal display based on a predetermined condition. You may make it display again in a state.

  In addition, the control device 20 of the present embodiment changes the display content of the abnormality notification H2 when the abnormality notification Hs in the reduced display state is automatically enlarged and displayed according to a predetermined condition. For example, as shown in FIG. 5 (c), the character string indicating the importance or urgency of abnormality handling is changed from “Caution” to “Warning”, and the character string indicating the coping method is The tone is changed to a tone that strongly encourages the drainage operation of the segmenter 13 as shown in FIG. Thereby, it is possible to prevent the response to the abnormality from being delayed or forgotten.

  The predetermined condition for automatically enlarging and displaying the abnormality notification Hs in the reduced display state can be an aircraft operation or an aircraft operation. For example, the abnormal notification Hs in the reduced display state is automatically enlarged and displayed on condition that the engine 9 is restarted. If it does in this way, abnormal notice H2 of an expansion state can be displayed at the timing of work start, avoiding during threshing and cutting work. Further, the abnormal notification Hs in the reduced display state is automatically enlarged and displayed on condition that the cutting clutch or the working machine (threshing) clutch is switched from the disengaged state to the engaged state. If it does in this way, the abnormal notice H2 of an expansion state can be displayed at the timing of the cutting start, avoiding the threshing and cutting work. Moreover, the abnormal notification Hs in the reduced display state may be automatically enlarged and displayed on condition that the reaping clutch or the work machine (threshing) clutch is switched from the engaged state to the disengaged state. If it does in this way, abnormal notice H2 of an expansion state can be displayed at the timing of the end of cutting, avoiding during the threshing and cutting work.

  Moreover, the abnormal notification Hs in the reduced display state may be automatically enlarged and displayed on condition that the cutting unit 2 has risen to a predetermined height or more (a height that is not used in the grain harvesting operation). If it does in this way, abnormal notice H2 of an expansion state can be displayed at the timing of the end of cutting, avoiding during the threshing and cutting work. Further, the abnormal notification Hs in the reduced display state may be automatically enlarged and displayed on the condition that the cutting unit 2 is lowered below a predetermined height. If it does in this way, the abnormal notice H2 of an expansion state can be displayed at the timing of the cutting start, avoiding the threshing and cutting work.

  Further, the abnormal notification Hs in the reduced display state may be automatically enlarged and displayed on condition that the multi-steer lever 16 is tilted to the left or right (turning operation) more than a predetermined angle. If it does in this way, the abnormal notice H2 of an expansion state can be displayed at the timing of the turning start, avoiding the threshing and cutting work.

  Further, the abnormality notification Hs in the reduced display state may be automatically enlarged and displayed on condition that the discharge clutch of the auger 5 is switched from the cut-off state to the on-state or from the on-state to the off-state. If it does in this way, abnormal notice H2 of an expansion state can be displayed at the time of grain discharge work, avoiding during threshing and cutting work. In addition, during the grain discharging operation, the tank weight information on the normal display screen A is confirmed, so that there is an advantage that the abnormality notification H2 is easily noticed.

  Further, the abnormal notification Hs in the reduced display state may be automatically enlarged and displayed on the condition that the auger 5 is moved (elevated or turned). If it does in this way, abnormal notice H2 of an expansion state can be displayed at the time of grain discharge work, avoiding during threshing and cutting work.

  Further, the abnormal notification Hs in the reduced display state may be automatically enlarged and displayed on the condition that the auxiliary transmission lever 18 is operated. If it does in this way, the abnormal notice H2 of an enlarged state can be displayed at the timing of the work end which switches from work driving | running | working to road driving | running | working, or the work start time which switches from road driving | running | working driving | running | working, avoiding during threshing and cutting work.

  The predetermined condition for automatically enlarging and displaying the abnormality notification Hs in the reduced display state may be detection or non-detection of the harvest. For example, the cereal detection sensor 38 (see FIG. 6) provided in the cereal conveyance path from the reaping part 2 to the threshing part 3 or the selection object detection sensor 39 (see FIG. 6) provided inside the threshing part 3 is OFF. The abnormal notification Hs in the reduced display state may be automatically enlarged and displayed on the condition that it is switched from ON to ON or from ON to OFF. If it does in this way, abnormal notice H2 of an expansion state can be displayed at the timing of the work start and work end, avoiding during threshing and cutting work.

  The predetermined condition for automatically enlarging and displaying the abnormality notification Hs in the reduced display state may be the position of the aircraft. For example, the position of the aircraft (latitude and longitude) is specified based on GPS signals received from three or more GPS satellites, and the abnormal display state is reduced on the condition that the specified position is an entry position or an exit position of the field. The notification Hs may be automatically enlarged and displayed. If it does in this way, abnormal notice H2 of an expansion state can be displayed at the timing of work start or work end, avoiding during threshing and cutting work.

  Further, the control device 20 of the present embodiment does not unconditionally display the abnormality notification H1 even when the abnormality of the aircraft is detected and the first abnormality notification H1 is displayed on the liquid crystal display unit 19. The first abnormality notification H1 is displayed on condition that the vehicle speed is equal to or lower than a predetermined speed. If it does in this way, the malfunction resulting from displaying abnormal information H1 during a run will be prevented.

  By the way, as described above, the moisture contained in the fuel is mainly accumulated in the fuel tank 10 due to dew condensation or the like. The notification H1 is frequently displayed, and there is a risk of hindering work. In order to solve such a problem, it is conceivable to detect the amount of water accumulated in the fuel tank 10 and to notify the maintenance of the fuel tank 10 based on the detected amount of water. The detection means for detecting the amount of water accumulated in 10 is more expensive than the detection means for detecting the amount of water accumulated in the cementer 13, and there is a risk that the cost will be significantly increased.

  Therefore, the control device 20 according to the embodiment of the present invention determines whether or not the drainage operation of the segmenter 13 is necessary (hereinafter, also referred to as a puddle detection as appropriate) based on the water content detected by the water detection sensor 13b. Then, it is determined whether or not the drainage operation of the cementer 13 has been performed (hereinafter, also referred to as “drainage detection” as appropriate), and the frequency of occurrence of the drainage operation is specified based on these determinations. When the specified occurrence frequency is higher than the predetermined frequency, the control device 20 determines that a large amount of water is accumulated in the fuel tank 10 and notifies the fuel tank 10 for maintenance (drainage operation) (hereinafter referred to as “removal operation”). (Also referred to as fuel tank notification or fuel tank notification as appropriate).

  The frequency of occurrence of the water draining operation can be specified, for example, based on the measurement time until it is determined that the next water draining operation is necessary after it is determined that the drainage operation of the cementer 13 has been performed. When the time is shorter than the predetermined time, it can be determined that the frequency of draining work is high. In addition, the frequency of occurrence of drainage work may be specified based on the number of occurrences of drainage work per unit time. In this case, the number of occurrences of drainage work per unit time is less than the predetermined number. If there are too many, it can be determined that the frequency of draining work is high. Although not shown in the drawings, the abnormality notification that prompts maintenance of the fuel tank 10 is equivalent to the abnormality notification H1 that prompts the drainage of the segmenter 13, and for example, “Fuel tank abnormality” is displayed as the abnormality content. The message “There is water in the fuel tank. Please drain water from the fuel tank drain” is displayed.

  Next, the input / output configuration and control procedure of the control device 20 for realizing the display operation of the liquid crystal display unit 19 as described above will be described with reference to FIG.

  As shown in FIG. 6, the control device 20 includes a control processor such as a CPU and a storage unit such as a RAM and a ROM, and the input side thereof includes the water detection sensor 13 b and the multi-steer lever 16 described above. (Lever angle sensor), main speed change lever 17 (lever angle sensor), touch panel 19b, grain hull detection sensor 38 and selected item detection sensor 39, engine rotation sensor 31 for detecting the rotation of the engine 9, and work implement clutch Working machine clutch detection sensor 32 for detecting on / off of the cutting machine, cutting clutch detection sensor 33 for detecting on / off of the cutting clutch, cutting part height detection sensor 34 for detecting the height of the cutting part 2, and discharge A discharge clutch sensor 35 that detects on / off of the clutch, an auger remote control 36 that moves the auger 5 up and down, and a turning operation; A travel auxiliary shift detection sensor 37 that detects the operation of the lever 18, a GPS 40 (reception module) that receives a GPS signal, and a travel rotation sensor 41 that detects the vehicle speed are connected to the output side of the control device 20. In addition to the above-described liquid crystal panel 19a, a buzzer 42 for sounding in accordance with the abnormality notification is connected.

  And the control apparatus 20 of this embodiment has abnormality determination means, abnormality notification display means (water draining operation notification means), abnormality notification display switching as a functional configuration realized by cooperation of hardware and software. Means, abnormality notification re-display means, display content change means, drainage work necessity judgment means, drainage work execution judgment means, and fuel tank maintenance notice means, hereinafter, notice control which is the main routine of the control device 20 An abnormality determination means, an abnormality notification display means (drainage operation notification means), an abnormality notification display switching means, an abnormality notification redisplay means, a display content change means, a drainage work necessity determination means, and a drainage work execution determination means. Specific control of the water discharge notification control of the realized cementer and the fuel tank maintenance notification control (hereinafter also referred to as fuel tank maintenance notification control as appropriate) realizing the fuel tank maintenance notification means. The procedure will be explained.

  As shown in FIG. 7, in the notification control, subroutine water drain notification control (S1) and fuel tank maintenance notification control (S2), which are subroutines, are repeatedly executed.

  As shown in FIG. 8, in the drainage water alert control, after the engine start process (S21), which will be described later, is executed, the water detection sensor 13b at the current execution is turned ON / OFF, and the water detection sensor 13b at the previous execution is executed. ON / OFF is determined (S22, S23, S24).

  Here, when it is determined that both the water detection sensor 13b are OFF during the current execution and the previous execution, “0” is stored in the segmenter notification flag (S25), and the notification of the cementor in the liquid crystal display unit 19 is performed. There is no display (S26), and the process returns to the upper routine. If it is determined that the water detection sensor 13b is OFF during the current execution and the water detection sensor 13b is ON during the previous execution, the water removal detection is stored in the history (S27), and then steps S25 and S26 are performed. To return to the upper routine.

  If it is determined that both the water detection sensor 13b are ON during the current execution and the previous execution, the stored value of the segmenter notification flag is determined (S28), and the water detection sensor 13b is detected during the current execution. If it is determined that the water detection sensor 13b is OFF at the time of the previous execution, the puddle detection is stored in the history (S29), and then the stored value of the sedimentor notification flag is determined (S28).

  If it is determined in step S28 that the stored value of the sedimentor notification flag is “0”, it is determined whether or not the aircraft is in a stopped state (below a predetermined speed) (S30), and the determination result is YES. In this case, “1” is stored in the sedimentor notification flag (S31), and the liquid crystal display unit 19 displays the segmenter notification (caution: H1) (S32), and then returns to the upper routine, but the determination in step S30 If the result is NO, execute steps S25 and S26 and return to the upper routine.

  On the other hand, if it is determined in step S28 that the stored value of the notification flag is other than “0”, the stored value of the notification flag is determined again (S33), and the determination result is “1” or “3”. If it is, a touch operation on the liquid crystal display unit 19 is determined (S34). If it is determined that there is no touch operation, the stored value of the segmenter notification flag is maintained as it is (S35), and the segmenter notification (caution or warning: H1 or H2) displayed on the liquid crystal display unit 19 is also displayed. The current state is maintained (S36), and the process returns to the upper routine. On the other hand, if it is determined in step S33 that there is a touch operation, “2” is stored in the segmenter notification flag (S37), and the segmenter is displayed on the liquid crystal display unit 19 (caution or warning: H1 or H2). Is switched to the reduced segment notification (reduction: Hs) (S38), and then the process returns to the upper routine.

  Also, when it is determined in step S33 that the stored value of the segmenter notification flag is “2”, the touch operation of the liquid crystal display unit 19 is determined (S39). If it is determined that there is a touch operation, the stored value of the segmenter notification flag is returned to the stored value before the reduction (S40), and the reduced state of the segmenter displayed on the liquid crystal display unit 19 (reduction: Hs). Is switched to the notification of the enlarged segmenter (caution or warning: H1 or H2) (S41), and the process returns to the upper routine.

  On the other hand, if it is determined in step S39 that there is no touch operation, the presence / absence of a predetermined condition that satisfies the condition among the plurality of predetermined conditions described above is determined (S42). Are maintained as they are (S43), and the reduced state segmenter notification (reduction: Hs) displayed on the liquid crystal display unit 19 is also maintained as it is (S44), and the process returns to the upper routine. On the other hand, if it is determined in step S42 that there is a “3” in the segmenter notification flag (S45), the contractor notification in the reduced state (reduction: Hs) displayed on the liquid crystal display unit 19 is expanded. (S46), the process returns to the upper routine.

  As shown in FIG. 9, in the engine start-up process, an engine drive state at the current execution time and an engine drive state at the previous execution time are determined (S10, S11). Here, when it is determined that the engine 9 is in the driving state at the time of the current execution and the engine 9 is in the non-driving state at the time of the previous execution, the stored value of the segmenter notification flag is determined (S12). In this case, the process returns to the upper routine as it is. In step S12, if it is determined that the stored value of the sedimentor notification flag is other than “1”, the process returns to the upper routine as it is, but if it is determined that the stored value of the sedimentor notification flag is “1”. Then, after storing “3” in the cementer notification flag (S13), the process returns to the upper routine.

  As shown in FIG. 10, in the fuel tank maintenance notification control, first, it is determined whether the water detection sensor 13b is ON / OFF during the current execution (S50). Here, if it is determined that the water detection sensor 13b is OFF at the time of execution this time, “0” is stored in the fuel tank notification flag (S51), and the fuel tank notification is not displayed on the liquid crystal display unit 19 (S52). Return to the upper routine.

  On the other hand, if it is determined that the water detection sensor 13b is ON during the current execution, the stored value of the fuel tank notification flag is determined (S53). Here, if the stored value is determined to be "0" Then, it is determined whether the water detection sensor 13b at the previous execution is ON / OFF (S54). If the determination result is ON, the process returns to the upper routine as it is, but if it is determined that the water detection sensor 13b is OFF, It is determined whether or not there is frequent mixing, that is, whether or not the frequency of water pool detection is high (S55). In this embodiment, referring to the history of the water puddle detection and the water puddle detection stored in the sedimenter water drain notification control, when the time from the previous water drain detection to the current water puddle detection is shorter than the predetermined time, water is mixed. Is determined to be frequent. If the determination result in step S55 is YES, “1” is stored in the fuel tank notification flag (S56), the fuel tank notification is displayed on the liquid crystal display unit 19 (S57), and the process returns to the upper routine. However, if the determination result of step S55 is NO, steps S51 and S52 are executed and the process returns to the upper routine.

  On the other hand, if it is determined in step S53 that the stored value is other than “0”, the touch operation of the liquid crystal display unit 19 is determined (S58). If it is determined that there is no touch operation, the stored value of the fuel tank notification flag is maintained as it is (S59), and the fuel tank notification displayed on the liquid crystal display unit 19 is also maintained as it is ( S60), the process returns to the upper routine. On the other hand, if it is determined in step S58 that there is a touch operation, “0” is stored in the fuel tank notification flag (S61), and the fuel tank notification displayed on the liquid crystal display unit 19 is switched to the non-display state. After (62), the process returns to the upper routine.

  According to the present embodiment configured as described, the combine 1 includes the liquid crystal display unit 19 and the control device 20 that controls the display of the liquid crystal display unit 19. Occurs, the abnormality notification H1 is displayed on the liquid crystal display unit 19, and the abnormality notification H1 is switched to the reduced display state (abnormality notification Hs) according to a predetermined operation by the operator. Further, based on a predetermined condition, Since the abnormality notification Hs in the reduced display state is automatically switched to the abnormality notification H2 in the enlarged display state, a reliable and quick response to the abnormality can be promoted.

  In addition, when the abnormality notification Hs in the reduced display state is automatically enlarged and displayed, the display content of the abnormality notification H2 is changed. For example, the importance or urgency of the abnormality response is changed to “Caution → Warning → Danger”. By making it higher step by step, it is possible to prevent the response to the abnormality from being delayed or forgotten.

  Further, since the predetermined condition is airframe operation or airframe operation, the abnormality notification H2 is enlarged and displayed at the break of work such as the start of cutting and the end of cutting while avoiding the enlarged display of the abnormality notification H2 during work as much as possible. In addition, it is possible to encourage a response to the abnormality.

  Further, since the predetermined condition is detection or non-detection of the harvested product, the abnormality notification H2 is displayed at a work break such as the start of the work or the end of the work while avoiding the enlarged display of the abnormality notification H2 during the work as much as possible. Enlarged display can be made to respond to the abnormality.

  Further, since the predetermined condition is the position of the machine body, the abnormality notification H2 is enlarged and displayed at the time of entering or leaving the field while avoiding the enlarged display of the abnormality notification H2 during work as much as possible. Response can be encouraged.

  In addition, since the first abnormality notification H1 is displayed when an abnormality occurs in the aircraft and the vehicle speed is equal to or lower than a predetermined speed, it is possible to prevent problems caused by displaying the abnormality notification H1 during traveling. .

DESCRIPTION OF SYMBOLS 1 Combine 2 Cutting part 3 Threshing part 4 Grain tank 5 Auger 7 Steering part 9 Engine 10 Fuel tank 11 Fuel supply path 13 Sedimenter 13a Water storage part 13b Water detection sensor 16 Multi steering lever 17 Main transmission lever 18 Sub transmission lever 19 Liquid crystal Display unit 19a Liquid crystal panel 19b Touch panel 20 Control device

Claims (6)

A working vehicle including a liquid crystal display unit and a display control unit that controls display of the liquid crystal display unit,
The display control unit
An abnormality determination means for determining an abnormality of the aircraft,
An abnormality notification display means for displaying an abnormality notification of an enlarged display state or a normal display state on the liquid crystal display unit when an abnormality occurs in the airframe;
An abnormality notification display switching means for switching the abnormality notification to a reduced display state or a non-display state according to a predetermined operation by an operator;
A working vehicle comprising: an abnormality notification redisplay unit that automatically redisplays the abnormality notification in the reduced display state or the non-display state in the enlarged display state or the normal display state based on a predetermined condition. .   The display control unit includes display content changing means for changing the display content of the abnormality notification when the abnormality notification in the reduced display state or the non-display state is automatically displayed again in the enlarged display state or the normal display state. The working traveling vehicle according to claim 1.   The working vehicle according to claim 1, wherein the predetermined condition is airframe operation or airframe operation.   The working vehicle according to claim 1, wherein the predetermined condition is detection or non-detection of a harvested product.   The work traveling vehicle according to claim 1, wherein the predetermined condition is a position of an airframe.   The working vehicle according to any one of claims 1 to 5, wherein the first abnormality notification is displayed when an abnormality occurs in the airframe and the vehicle speed is equal to or lower than a predetermined speed. .

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