JP2002305941A - Control system for farm working implement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a control system for a farm working implement, allowing for selectively displaying the respective output modes of many pulse input-type external devices 75 (vehicle speed sensor 100, second crop-receiving gutter screw conveyor rotation sensor 101, threshing cylinder revolution sensor 113, treatment cylinder revolution sensor 114, engine revolution sensor 119). SOLUTION: This control system for a farm working implement has the following construction and scheme: controller units C1 to C4 to which pulse input-type external devices (vehicle speed sensor 100, second crop-receiving gutter screw conveyor rotation sensor 101, threshing cylinder revolution sensor 113, treatment cylinder revolution sensor 114, engine revolution sensor 119) and output-type external devices and a liquid crystal panel controller unit 170 are mutually connected via communication wiring cords 70, and a liquid crystal panel 77 and a changeover switch 151 are connected to the controller unit 170; according to the changeover operation of the changeover switch 151, the pulse number, or the like, of a working section wishing to observe is put to changeover display on the screen of the liquid crystal panel 77.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for an agricultural work machine such as a combine, and more particularly, to a control device for transferring control data while cooperating with a plurality of controller units and an external device for an input system output system. The present invention relates to a configuration of a control device that executes the control of (1).

[0002]

2. Description of the Related Art A recent agricultural work machine such as a combine machine controls a sensor or a setting device for transmitting a signal of a control amount to a control means as a control target, for example, an output (load) of an engine of a traveling machine body. A fuel injection amount detection sensor (a rack position detection sensor for adjusting the position of a fuel injection plunger) of an electronic governor serving as an actuator, and a traveling unit that detects the relative height of the traveling crawlers on the left and right of the traveling unit with respect to the traveling aircraft. A height sensor (vehicle height sensor), an auger clutch operating position detection sensor for disconnecting power to a conveyor of a discharge auger for discharging grains in a grain tank to the outside, and a horizontal cylinder of the discharge auger An auger position setting device that instructs (sets) the horizontal orientation of the cylinder and the height of the grain discharge portion at the tip of the horizontal cylinder, and a sensor for detecting the operation amount of the controlled object according to the control signal. Sa, for example, a speed sensor for detecting the traveling speed of the agricultural machine and the rotational speed of the working unit of the threshing unit,
Input system external devices such as a horizontal direction sensor and a height sensor of the horizontal tube of the discharge auger, an electromagnetic solenoid for driving a fuel injection plunger in the electronic governor, and adjusting the height of the left and right traveling crawlers. Actuators such as a hydraulic cylinder for operating the auger clutch, a clutch motor for driving the auger clutch, a drive motor for turning the discharge auger left and right, and a hydraulic cylinder for raising and lowering the horizontal cylinder of the discharge auger for adjusting the horizontal angle. It is common practice to provide an output system external device consisting of a microcomputer and control the operation of the output system external device by a control means such as a microcomputer.

In the case where there are many types and numbers of the input external devices and the output external devices, recent control devices include, for example, JP-A-2-219506 and JP-A-6-219506.
As disclosed in JP-A-233614 and JP-A-7-19059, a plurality of electronically-controlled controller units such as microcomputers are used, and the controller units cooperate with each other and perform the input operation. It is disclosed that output external devices are distributed and controlled.

For this purpose, one controller unit is used as a main controller (master controller) and another controller unit is used as a slave controller (slave controller).
Or, in a peer-to-peer type that has no master-slave relationship, the mutual controller units are connected via the communication line wiring cord, while the external devices of each input / output system and the controller unit For electrical connection.

[0005] By the way, in the agricultural working machine, various displays are provided so that the operator can grasp the working state, for example, to visually recognize the rotation speed of the engine and the rotation speed of the handling cylinder. An instrument and a liquid crystal panel were provided so that status information (data) of a plurality of working units could be grasped.

[0006]

However, even with the liquid crystal panel, since the display area of the liquid crystal panel is limited, it is set so that only information of a plurality of predetermined working units can be displayed. I was In particular, since the signal of an input system external device that inputs a rotation speed sensor to the controller unit as a panel signal fluctuates every moment, if the information cannot be recognized, the detailed working state of the working unit can be grasped. There was a problem that it could not be done.

On the other hand, a display device such as the liquid crystal panel is
Conventionally, the LCD panel was fixedly located at a predetermined location in the driver's cab. However, users who want to place the LCD panel in a location where it is easy to check the work status (inspection) at the time of work type and maintenance. There was hope.

SUMMARY OF THE INVENTION The present invention has been made to solve this kind of problem in the prior art, and has as its object to provide a control device for an agricultural work machine capable of reliably grasping a work state. It is.

[0009]

According to a first aspect of the present invention, there is provided a control device for an agricultural work machine, comprising: a sensor, a setting device provided in a traveling unit, a work unit, an operation unit, and the like in the agricultural work machine. Such as an input system external device, an output system external device such as an actuator, and a plurality of controller units that transmit and receive control signals to and from one or both of the input system external device and the output system external device, A control device for an agricultural work machine, comprising: a communication line connecting between the controller units; and a control unit for transferring control data between the controller units to execute control. The communication line includes a display function of a liquid crystal panel. Of the switch unit connected to the liquid crystal panel controller unit for controlling the LCD panel Operated by the information of the pulse input system external device connected to the plurality of controller unit, it is characterized in that the control to allow the display switching on the display screen of the liquid crystal panel.

According to a second aspect of the present invention, in the control device for an agricultural work machine according to the first aspect, the pulse input system external device is a rotation sensor based on a pulse input, and a preset rotation speed is set. Is controlled so that a sign that warns of an alarm or prompts the user to change the work mode is displayed on the display screen of the liquid crystal panel when it is out of the range.

[0011] The invention according to claim 3 is based on claim 1.
3. The control device for an agricultural work machine according to claim 2, wherein the communication line includes a plurality of couplers for connecting to the controller unit for the liquid crystal panel, so that an arrangement position of the liquid crystal panel can be selected. It is.

According to a fourth aspect of the present invention, in the control device for an agricultural work machine according to any one of the first to third aspects, the liquid crystal panel can display information such as characters, symbols, and images. Is configured.

[0013]

FIG. 1 is a left side view of the combine, FIG. 2 is a right side view of the combine, FIG. 3 is a front view, and FIG. 4 is a power transmission. FIG. 5 is a hydraulic circuit diagram, FIG. 6 is a top view of an operation unit, FIG. 7A is a first display screen of a liquid crystal panel, and FIG. 7B is a second display screen. 8, FIG. 8 is a perspective view showing various operation levers and the like provided on a grip portion of the main transmission lever, FIGS. 9 to 12 are functional block diagrams showing types of input / output external devices connected to each controller unit, and FIG. FIG. 3 is a functional block diagram showing a connection state of the control device according to the present invention.

Traveling body 1 in the combine of the present invention
Is configured to be able to move up and down with respect to a pair of left and right traveling crawlers 2a of the traveling unit 2 via a traveling unit elevating drive unit described later. A threshing device 3 as a working unit is mounted on the left side in the traveling direction of the traveling machine 1, and a pre-cutting device 4 as a working unit disposed in front of the traveling machine 1 is connected via a lifting frame 14. It is supported so as to be able to move up and down and up and down with respect to the traveling machine 1 and can be moved up and down by a single-acting mowing unit elevating hydraulic cylinder 9 serving as a mowing unit elevating actuator mounted between the elevating frame 14 and the traveling machine 1. Is configured.

A clipper-type cutting blade device 5 is arranged below the lower frame of the pre-cutting device 4, and a grain stem raising device 6 for six rows is arranged in front of the cutting blade device 5. A grain culm conveying device 8 is arranged between the front end of the feed chain 7 and a weed body 10 protruding from the lower front of the grain culm raising device 6. A driver's cab 11 is arranged at the front right side of the traveling machine body 1, and a grain tank 12 is arranged at the rear side.

As shown in FIG. 4, a part of the power from the engine 15 provided at the lower rear portion of the cab 11 is supplied to the bottom screw conveyor 17 in the grain tank 12 and the discharge auger 28 through the auger clutch 16 as shown in FIG. While being transmitted to the vertical and horizontal screw conveyors 18a and 18b in the inside, the handling cylinder 3a of the threshing unit 3 of the hydraulic pump / hydraulic motor type (HTS type) traveling drive unit 24 of the traveling unit 2 via the power branch transmission 19 and The screw conveyor 22a of the first gutter, the screw conveyor 22b of the second gutter, the feed chain 7, the screw conveyor 23 for raising the grain tank 12, and the like are rotationally driven. Power transmission to the pre-cutting device 4 is executed via the output shaft 26 from the traveling drive unit 24 when the traveling speed is synchronized, and is transmitted by the clutch 25a and the branch power from the power branch transmission 19 when the traveling speed is not synchronized. Driven.

As shown in FIG. 1 and FIG.
The discharge auger 28 for discharging the grains in 2 out of the machine is:
Bottom screw conveyor 1 provided under grain tank 12
7, a vertical pipe 28b disposed at the rear end of the traveling body 1;
A horizontal pipe 28a is provided at the upper end of the pipe so as to be rotatable up and down. A screw conveyor 18a and the like are provided in each pipe. The vertical pipe 28b is rotatable around the vertical axis by a drive motor 64b and a gear mechanism 57, and the horizontal pipe 28a is a discharge auger hydraulic cylinder 64a mounted between the vertical pipe 28b and a link mechanism. 58
Thus, the inclination angle can be changed.

The horizontal turning angle of the vertical pipe 28b, and consequently the turning position of the horizontal pipe 28a, can be detected by an angle sensor 85 such as a rotary encoder provided on the drive motor 64b, and the link mechanism 58 or the hydraulic cylinder 64a can be detected. An angle sensor 86 such as a potentiometer provided at a location can detect the elevation angle of the horizontal pipe 28a and, consequently, the height position of the discharge portion at the tip of the horizontal pipe 28a. When the discharge auger 28 is not used, an intermediate portion of the horizontal pipe 28a is placed on a rest table 87 provided on the upper surface of the grain tank 12 or the like. This rest table 8
7 is provided with a rest detector 88 such as a contact sensor for detecting whether or not the horizontal pipe 28a is mounted.

The traveling section 2 includes a pair of left and right track frames 5.
Drive wheels 51 and driven wheels 5 arranged at the front and rear ends of 0, 50, respectively.
Traveling crawler 2a wound around the outer periphery of a plurality of rolling wheels 53 arranged in the middle of the lower surface of the track frame 50
The left and right track frames 50, 50 and the traveling body 1 are separated from each other by left and right lifting control hydraulic cylinders 54a, 54b.
5 and right and left lifting control hydraulic cylinders 54a and 54b (see FIG. 5). ) Are operated independently of each other, so that the right and left traveling parts 2 and 2 are independently raised and lowered with respect to the left and right of the traveling machine body 1.

Accordingly, when the piston rods of the right and left lifting control hydraulic cylinders 54a and 54b are simultaneously projected, the traveling body 1 moves upward (moves up) away from the traveling parts 2 and 2 on the left and right sides. The relative height (vehicle height) of the body 1 with respect to the traveling portions 2 and 2 increases. Conversely, when the piston rod is simultaneously retracted, the traveling body 1 moves downward (down) with respect to the traveling sections 2 and 2 on the left and right sides, and the relative height (vehicle height) of the traveling body 1 with respect to the traveling section. Will be lower.

Then, the piston rod of the left hydraulic cylinder 54a is projected, or the right hydraulic cylinder 5a
When the piston rod 4b is retracted (or both operations are performed simultaneously), the vehicle height of the traveling body 1 with respect to the right traveling section 2 decreases (the vehicle height of the traveling body 1 with respect to the left traveling section 2). Becomes higher), and the traveling body 1 tilts downward and to the right. Conversely, the piston rod of the right hydraulic cylinder 54b is projected, or the left hydraulic cylinder 5
When the piston rod 4a is retracted (or both operations are performed at the same time), the vehicle height of the traveling body 1 with respect to the left traveling section 2 decreases (the vehicle height of the traveling body 1 with respect to the right traveling section 2). Becomes higher), and the traveling body 1 inclines to the lower left.

Left and right lifting control hydraulic cylinders 54a, 54
By detecting the amount of protrusion of the piston rod of 4b,
A connecting rod or link mechanism provided with a vehicle height detecting sensor 72a, 72b of a rotary encoder type or the like for detecting the relative height (vehicle height) of the traveling body 1 with respect to each of the left and right running parts 2, 2 is connected to the connecting rod. Are configured to work together.

The inclination detecting sensor 74 for detecting the degree of inclination of the traveling body 1 in the left and right direction is a pendulum type (gravity type).
And the like, and is disposed at an arbitrary position of the traveling body 1, for example, in the cab 11 or the like. In addition, the ultrasonic sensors 20a and 20b as the cutting height sensors for detecting the cutting height by detecting the ground height between the cutting pre-processing device 4 and the field scene,
As shown in FIG. 3, the ultrasonic sensors 20a and 20b are disposed on brackets (not shown) provided on the back side of the grain stem raising device 6 on both left and right ends of the pre-cutting device 4.
The transmitting part (horn part) of the transmitter and the receiving part of the receiver are arranged so as to face the field scene. Each ultrasonic sensor 2
When the installation heights of the cutting blades 0a and 20b are different from the installation height of the cutting blade 5, the detection value of the cutting height is obtained by a predetermined conversion from the detection values of the ultrasonic sensors 20a and 20b.

An elevation position sensor 71 for detecting the relative height between the traveling machine 1 and the pre-cutting device 4.
Is configured to be obtained by detecting a rotation angle of the lifting frame 14.

FIG. 5 shows the lifting hydraulic cylinder 54a,
54b shows a hydraulic circuit for the hydraulic pump 54b and the like, and branches via a branch valve 63 for branching the pressure oil discharged from the hydraulic pump 60;
A hydraulic cylinder 9 as a mowing unit elevating actuator for elevating the mowing pre-processing device 4 from one of the discharge paths.
And the right and left (operator cab 11 side) lifting / lowering control hydraulic cylinders 5
4b to the first hydraulic circuit 61. From the other discharge path of the flow dividing valve 63, the horizontal pipe 28a of the discharge auger 28
The hydraulic cylinders 9 and 64 are configured to send the hydraulic cylinders 64 to the second hydraulic circuit 62 for the discharge auger lifting hydraulic cylinder 64a for changing the inclination angle with respect to the vertical pipe 28b and the left lifting hydraulic cylinder 54a.
a, 54a, 54b electromagnetic control valves 65, 66, 6
7, 68, a check valve, a relief valve and the like are connected.

Next, the structure of various operation levers and switches provided in the cab 11 will be described with reference to FIGS. A steering round handle 147 for steering the traveling body 1 and an accelerator lever 195 are provided in front of the control seat 146 of the driver's cab 11, and a long front and rear side column 148 is provided on the left side of the control seat 146. Have been placed.

As shown in FIG.
8 is provided with a vehicle height adjustment lever 73 as a manual variable operation unit capable of changing and adjusting the height (vehicle height) of the traveling body 1 in the case of vehicle height control regardless of the automatic mode and the manual mode. And a tilt setting device 74a for setting the left-right tilt angle of the traveling machine body 1 are arranged. A liquid crystal panel 77, which will be described in detail later, is arranged at the rear portion. In the vicinity, a warning buzzer stop switch 133 is arranged,
Further, a main shift lever 149 for continuously changing the vehicle speed is provided at a rear portion thereof, and the HST type traveling drive unit 1 according to a work state.
9 and a sub-transmission lever 160 for setting and maintaining the output and the rotation speed within a predetermined range are arranged in parallel to the left and right, and the respective levers 149 and 160 are configured to rotate in the front-rear direction. On the side column 148 on the right side of the sub-shift lever 160, a cutting automatic lift switch 131 and a cutting height adjustment volume 150 are arranged.

A work lever 152 for cutting and threshing operations is disposed at the rear of the sub-shift lever 160 so as to be able to rotate back and forth. And the threshing switch 135 are both OFF, the reaping switch 134 is ON and the threshing switch 135 is O
In the FF, in the second stage, both the mowing switch 134 and the threshing switch 135 are turned on.

The grip 140a of the main shift lever 149
On the right side, an automatic lift switch 137 and an automatic set switch 138 are provided, and on the front side, a mowing elevating lever 139 is disposed, which tilts backward and raises the pre-cutting device 4 and lowers it when tilted forward. On the left side thereof, a handling depth adjusting lever 140 that is inclined backward when it is tilted rearward is disposed (see FIG. 8).

The liquid crystal panel 77 is of a color dot matrix type capable of displaying information such as characters, symbols, drawings and images, for example, a TFT color liquid crystal display, but may be a monochrome type. Liquid crystal panel controller unit 17 for controlling display switching
0 is arranged on the back surface of the liquid crystal panel 77, housed in a case 77a and integrated, so that the installation position can be arbitrarily changed (see FIG. 7 (a) and the like). A changeover switch 151 for switching the display screen of the liquid crystal panel 77 is provided on the surface of the case 77a. In addition,
FIG. 7A shows a first display screen for displaying information such as the execution status of various controls of the combine, and FIG. 7B shows the second display screen.
3 shows a display screen. In the embodiment shown in FIG. 6, the liquid crystal panel 77 is arranged at a position near the front end on the upper surface of the side column 148.

Each of the liquid crystal panel controller units 170 includes a controller unit C described later.
1, C2, C3, and C4, and application software (program) that can manage and control the input and output of all input external devices 75 and output external devices 76 connected to each of the controller units C1 to C4. Stored. Further, the changeover switch 151 for switching the display of the work state of the plurality of pulse input system external devices in the work mode is provided by the controller unit 17 for the liquid crystal panel.
0 (see FIG. 13).

The pulse input system external device includes a vehicle speed sensor 100, a second gutter screw conveyor rotation sensor 10
1. There is a handling cylinder rotation sensor 113, a processing cylinder rotation sensor 114, and an engine rotation sensor 119 (see FIG. 13). This is because these sensors use a rotary encoder or the like.

FIG. 13 is a diagram for controlling the overall operation of the combine, such as the traveling speed, attitude and vehicle height of the traveling machine body 1, and the discharge position of the discharge auger 28, and switching the display of the operation state of the plurality of input system external devices 75. FIG. 14 is a functional block diagram of a control device for displaying on one liquid crystal panel 77, and FIG.
In order to allow the installation location of the liquid crystal panel 77 to be rearranged to a plurality of locations, a communication wiring cord 70 as a communication line is provided with a branch line 70a for connecting the liquid crystal panel.
70b are provided at a plurality of locations, and the couplers 152, 1 at the tips thereof are provided.
Reference numeral 52 denotes a connectable configuration. The control device is an electronic control device such as a microcomputer, and includes a plurality (four in the embodiment) of controller units C1, C2, C3, and C4 shown in FIGS. 170 and L including a data bus, a control bus, and an address bus connecting them.
It consists of a communication line such as AN communication. This communication line is formed by twisting two core wires in a twisted pair, or by using an outer wire (net wire or metal tape) around the center line via an insulator. A communication wiring code (also referred to as a communication cable) 70 made of a coated coaxial cable or the like.
(Local Area Network) and adopts a bus shape topology (connection form) (see FIG. 13).

Although not shown, each of the controller units C1 to C4 and the liquid crystal panel controller unit 170 are a central processing unit (CPU) for executing various arithmetic processing and control, and a read-only memory (ROM) for storing a control program. ), Random Access Memory (RAM) for temporarily storing various detected values, data, etc., and EE as an electrically erasable and writable nonvolatile memory
It includes a PROM, a clock as a timer function, an interface, and a control unit such as a communication circuit for communication using a LAN (Local Area Network) protocol or a CAN (Controller Area Network) protocol.

In each of the ROMs of the controller units C1 to C4 of the above embodiment, corresponding application control programs (software) S1, S
2, S3, and S4 are stored (stored) in advance. here,
The application control program is based on input data (control signal) from an external input device 75 such as a sensor or a setting device, which will be described later.
Means a control program for operating the.

The application control program S1 is:
An application control program S is a control program for operating various actuators (for example, the hydraulic cylinder 9 for cutting and lifting) of the threshing device 3 and the pre-cutting device 4.
2 operates the cutting and lifting hydraulic cylinder 9 and the left and right lifting hydraulic cylinders 54a and 54b of the traveling machine 1 to execute the cutting height control of the cutting pre-processing device 4 and the posture and vehicle height control of the traveling machine 1. Control program for The application control program S3 is a control program for controlling the output of the engine 12, and the application control program S4 is a control program for controlling the operations of the drive motor 64b and the vertical hydraulic cylinder 64a in the discharge auger 28. .

Each of the controller units C1 to C4 is, as a guide, an input external device 75 and an output external device 76.
The harnesses are controlled so as to be as short as possible, and are stored in a controller box (not shown) at each location.

For example, the controller unit C1 is installed on the lower surface side of the floor plate in the cab 11 (see FIGS. 1, 2 and 3). The controller unit C1
The input interface includes a vertical position sensor 71 as an input system external device 75, a grain culm transport sensor 96 for detecting whether or not the harvested grain culm is being transported in the pre-cutting processing device 4, and a grain culm transporter 96 being transported. Grain stem length sensor 97 for detecting length, handling depth sensor 98, auger clutch motor switch 99, ultrasonic sensors 44a and 44b, vehicle speed sensor 100, second gutter screw conveyor rotation sensor 1
01, a steering round handle limit switch 102 and the like are connected (see FIG. 9).

The output interface of the controller unit C1 includes, as an output system external device 76, a control circuit unit 103 such as a relay unit in a handling depth control motor;
A control circuit unit 104 such as a relay unit in an auger clutch motor, an electromagnetic solenoid 105 for driving a threshing clutch, and the like are connected to each other (see FIG. 9).

The controller unit C2 is shown in FIGS.
As shown in FIG. 3 and FIG. 3, it is installed at an upper portion of the pre-cutting device 4 and near the cab 11. The input interface of the controller unit C2 includes the fuel sensor 106, the tilt sensor 4 as the input system external device 75.
3. Vehicle height sensors 41a, 41b, paddy flow rate sensor 107 in the flour plate of the sorting device, paddy sensor 108 for detecting the presence or absence of paddy in each part of the sorting device, and straw cutter clogging sensor 10
9, a turning angle sensor 85, a discharging auger tip operating section 110 provided at the tip of the horizontal auger cylinder 17 to operate the horizontal turning of the discharging auger 13, a vertical turning angle sensor 86, an auger clutch sensor 111, a discharging auger overload. A sensor 112, a swing sorting overload sensor 113, a handling cylinder rotation sensor 114, a processing cylinder rotation sensor 115, and the like are connected to each other (FIG. 1).
0).

The output interface of the controller unit C2 includes, as output system external devices 76, a swing selection drive motor 116, an FC clutch drive circuit 117, a drive motor 64b for horizontally rotating the vertical auger cylinder 28b of the discharge auger 28, The discharge auger brake 118, the electromagnetic solenoid 66a of the electromagnetic control valve 66 for the vertical rotation hydraulic cylinder 64a, and the electromagnetic solenoid 6 of the electromagnetic control valve 67 for the lifting hydraulic cylinder 54a on the left side of the traveling body 1.
7a, an electromagnetic solenoid 68a of an electromagnetic control valve 68 for the lifting hydraulic cylinder 38b on the right side of the traveling machine body 1, an electromagnetic solenoid 65a of an electromagnetic control valve 65 for the cutting and lifting hydraulic cylinder 9, and the like are connected (see FIG. 10). .

The controller unit C3 is shown in FIGS.
And the control seat 4 in the cab 11 as shown in FIG.
6 at the rear. The input interface of the controller unit C3 includes an input external device 75.
A fuel injection pump rack position sensor 122 for detecting a rack position of an electronic governor-equipped fuel injection pump for controlling the output (load) of the engine 12 as an engine speed sensor 119, an engine oil amount sensor 120, an engine water temperature sensor 121, , Engine starter switch 12
3. An auger set position dial 124 for storing the horizontal turning position of the discharge auger 13 in advance, a discharge auger operating unit 125 provided in the operator's cab 11 for operating the horizontal rotation of the discharge auger 13, a reaping clutch motor limit switch 1
26 are connected to each other (see FIG. 11).

The output interface of the controller unit C3 includes an engine 1 as an output system external device 76.
A fuel injection pump rack actuator 127 for adjusting the rack position of the fuel injection pump so that the number of rotations of the engine 2 becomes a predetermined number of rotations, an engine starter relay 128,
The alarm buzzer 129 and the like are connected respectively (FIG. 11).
reference).

The controller unit C4 includes the cab 11
(See FIGS. 1, 2 and 3). The input interface of the controller unit C4 includes, as input system external devices 75, an accelerator lever sensor 95a for detecting an operation position of an accelerator lever 95, a vehicle height adjustment lever 73, a vehicle height control changeover switch 78, a tilt setting device 74a, and the like. Automatic depth control switch 1
30, automatic cutting and lifting switch 131, cutting pre-processing device 4
Is automatically lowered to a predetermined cutting height, a cutting auto clutch switch 132 for automatically transmitting power to the pre-cutting device 4, a warning buzzer stop switch 133, a cutting switch 134 for executing a cutting operation, and a threshing operation. Switch 135 for adjusting the grain selection state in the sorting device, an automatic lift switch 137 for forcibly raising the pre-cutting device 4, and a predetermined cutting height for the pre-cutting device. An automatic set switch 138 for forcibly lowering the mower and a mowing elevating lever 1 for manually operating the elevating movement of the pre-cutting device 4.
39, handling depth adjustment lever 140, auxiliary transmission lever 160,
A reversing switch 141 for reversing the traveling body 1;
The power switch 142 and the like are connected (FIG. 1
2).

The output interface of the controller unit C4 includes, as an output system external device 76, a vehicle height control changeover switch lamp 143 which is lit when the vehicle height control is switched to the automatic mode, and when the vehicle depth control is switched to the automatic handling depth control mode. Depth automatic control switch lamp 1
44 and the like are connected (see FIG. 12).

Next, control for switching the indicator (information) of the operation state of the panel input system external device will be described with reference to FIG. As shown in FIGS. 7A and 7B, each time the changeover switch 151 is pressed once, the liquid crystal panel 7 is pressed.
7, the display on the display unit screen 154 of the panel input system external device is changed. For example, when the first changeover switch 151 is pressed, the screen shown in FIG. Here, the engine speed display section 180
The engine load monitor 181 and the display 183 for switching between the fuel gauge and the handling depth appear on the display screen 154. Other display units, such as a kernel accumulation amount display unit 182 in the kernel tank 12, a battery charge display unit 184, a hydraulic pilot lamp 185, a water temperature pilot lamp 186 of the engine cooling water, and a grain culm monitoring unit 187 of the cutting unit. The monitor unit 188 for detecting the clogged state of the handling cylinder / processing cylinder does not change when the changeover switch 151 is pressed.

Then, the second changeover switch 151
By pressing the button, the screen shown in FIG. 7B is displayed. Here, the first display unit 189 displays the currently selected pulse input system external device by characters or the like, and the second display unit 190 , Information (data) indicating the current operating state of the pulse input system external device is displayed in a bar graph, a graphic, or the like. Therefore, each time the changeover switch 151 is pressed, for example, as an external device of the pulse input system, the engine rotation sensor 119 → vehicle speed sensor 100 → second gutter screw conveyor rotation sensor 101 → handle drum rotation sensor 113
→ Process cylinder rotation sensor 114 → Engine rotation sensor 119
Will be displayed in a circular manner.

When the operation state of each pulse input system external device is out of the predetermined range of the standard value or the set value,
It is preferable to alert the operator by activating the alarm buzzer 129 or displaying a message at a predetermined position on the liquid crystal panel 77 to prompt the user to switch the operation mode.

FIG. 14 shows a configuration in which the installation position of the liquid crystal panel 77 having the above-described configuration can be changed. The driver can easily view the location, for example, in the cab 11, in addition to the side column 84, a round handle. 149 may be provided on the right side in front of the vehicle or at a position near the top of the front window. Further, for example, when the engine is disposed near the rear end far away from the cab 11, engine maintenance work may be performed. It can be rearranged to a location that makes it easier. Therefore, the branch line 70 of the communication wiring cord 70
A and 70b are extended to the above-mentioned positions where they can be arranged, and a coupler 152 to be connected to the connector 153 of the liquid crystal controller unit 170 is mounted in advance at the end of each branch line. Needless to say, the power cords 154 and 155 are connected to the connectors 153 so that power can be supplied to the liquid crystal controller unit 170 and the liquid crystal panel 77.

Even if there are many pulse input system external devices 75 and output system external devices 76 (output system operation means), their signals are transmitted to each of the controller units C1, C2, C3, C4.
And can be transmitted to the liquid crystal controller unit 170 via the communication line (communication wiring cord 70).
Unlike the related art, it is not necessary to connect the wiring cords directly connected to all the input / output system external devices to the liquid crystal panel, so that the wiring cords (harness) can be saved. If application software for inspection (inspection) is incorporated in the liquid crystal controller unit 170, a system for inspecting (inspection) all the output system external devices 76 can be constructed.

The communication line in the present invention is a LAN (Loca
l Area Network) protocol, CAN (Cont.
roller Area Network) protocol. Needless to say, the present invention can be applied not only to a combine but also to a traveling agricultural machine such as a tractor for cultivation or a rice transplanter.

[0052]

As described above, the control device for the agricultural working machine according to the first aspect of the present invention is an input system for sensors, setting devices, and the like provided on the traveling unit, the working unit, the operating unit, and the like of the agricultural working machine. An external device, an output system external device such as an actuator, and a plurality of controller units that transmit and receive control signals to and / or control one or both of the input system external device and the output system external device; And a communication line for connecting the controller unit to the control unit in the agricultural work machine, wherein the control unit transfers control data to each other to execute control, wherein the communication line controls a display function of a liquid crystal panel. The liquid crystal panel controller unit is connected, and the changeover operation of the switch connected to the liquid crystal panel controller unit is performed. The information of the pulse input system external device connected to a plurality of the controller unit, is characterized in that the control to allow the display switching on the display screen of the liquid crystal panel.

Therefore, it is possible to selectively and arbitrarily observe the operation states of the plurality of pulse input system external devices, and it is possible to obtain detailed and accurate work states of the plurality of work units.

According to a second aspect of the present invention, in the control device for an agricultural work machine according to the first aspect, the pulse input system external device is a rotation sensor based on a pulse input, and a preset rotation speed is set. 2. The control method according to claim 1, wherein a sign is displayed on the display screen of the liquid crystal panel so as to notify an alarm or change a work mode when the distance is out of the range. In addition to the effects of the present invention, there is an effect that an opportunity can be promptly given to a worker (operator) to recognize an abnormal state and return to a normal state.

The third aspect of the present invention provides the first aspect.
3. The control device for an agricultural work machine according to claim 2, wherein the communication line includes a plurality of couplers for connecting to the controller unit for the liquid crystal panel, so that an arrangement position of the liquid crystal panel can be selected. Therefore, the liquid crystal panel can be installed at a position where the operator can most easily see, and the effect of improving the efficiency of normal work and maintenance can be achieved.

According to a fourth aspect of the present invention, in the control device for an agricultural work machine according to any one of the first to third aspects, the liquid crystal panel can display information such as characters, symbols, and images. Because it is composed of
The effect is that the amount of information that can be transmitted to the operator is accurate, detailed, and large, and the judgment data for work correction is abundant.

[Brief description of the drawings]

FIG. 1 is a left side view of a combine.

FIG. 2 is a right side view of the combine.

FIG. 3 is a front view of the combine.

FIG. 4 is a skeleton diagram of a power transmission system.

FIG. 5 is a hydraulic circuit diagram.

FIG. 6 is a top view of the operation unit.

7A is a diagram illustrating a first display screen of a liquid crystal panel, and FIG. 7B is a diagram illustrating a second display screen.

FIG. 8 is an enlarged perspective view showing a main part of a main transmission lever.

FIG. 9 is a functional block diagram of the controller unit C1.

FIG. 10 is a functional block diagram of a controller unit C2.

FIG. 11 is a functional block diagram of a controller unit C3.

FIG. 12 is a functional block diagram of a controller unit C4.

FIG. 13 is a functional block diagram showing a configuration of a first embodiment of the control device of the present invention.

FIG. 14 is a functional block diagram illustrating a configuration of a control device according to a second embodiment of the present invention.

[Explanation of symbols]

C1, C2, C3, C4, C5 Controller unit 70 Communication wiring code 75 Input system external device 76 Output system external device 77 LCD panel 79 Device wiring code 100 Vehicle speed sensor 101 No. 2 gutter screw conveyor rotation sensor 113 Handle rotation sensor 114 Processing cylinder rotation sensor 119 Engine rotation sensor 151 Changeover switch 170 Controller unit for liquid crystal panel

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G02F 1/13 505 G02F 1/13 505 1/133 505 1/133 505 (72) Inventor Wataru Nakagawa Osaka 1-32 Chayamachi Kita-ku Yanmar Agricultural Machinery Co., Ltd. (72) Inventor Tomohiro Koyama 1-32 Chayamachi Kita-ku, Osaka City Yanmar Agricultural Machinery Co., Ltd. F-term (reference) 2B074 AA02 AB01 AC02 AD05 AF02 BA18 CA01 CE01 DA01 DA02 DA03 DA05 DB03 DB04 DE03 DE05 2B076 BA05 BA06 BA07 EB05 EC19 ED21 2B304 LA02 LA13 LB02 RB01 RB02 RB06 RB07 2H088 EA02 EA23 2H093 NA79 NC50 NC90 ND60

Claims (4)

[Claims] 1. An input system external device such as a sensor and a setting device provided in a traveling unit, a working unit, an operation unit and the like of an agricultural work machine, an output system external device such as an actuator, and each of the input system external devices or an output system. Equipped with multiple controller units that send and receive control signals to and / or from one or both of the external devices, and communication lines that connect between the controller units. A control unit for a liquid crystal panel for controlling a display function of a liquid crystal panel is connected to the communication line, and a changeover switch connected to the controller unit for the liquid crystal panel is connected to the communication line. By the switching operation, the information of the pulse input system external device connected to the plurality of controller units is Controller in agricultural machines and controls to allow the display switching on the display screen of the liquid crystal panel. 2. The pulse input system external device is a rotation sensor based on a pulse input, and when a rotation speed is out of a preset rotation speed range, an alarm is issued or a sign urging a change of a work mode is provided. The control device for an agricultural work machine according to claim 1, wherein the control is performed so as to be displayed on a display screen of a liquid crystal panel. 3. The liquid crystal panel according to claim 1, wherein the communication line includes a plurality of couplers for connecting to the controller unit for the liquid crystal panel so that an arrangement position of the liquid crystal panel can be selected. Item 3. A control device for an agricultural work machine according to item 2. 4. The control device according to claim 1, wherein the liquid crystal panel is configured to display information such as characters, symbols, and images.