JP2001301488A - Indicating device for working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve inconvenience of a conventional structure in which a special controller is required for each type of vehicular body, and that an operator has to designate the type of a tractor by a switch and the like for producing a suitable indication on a liquid crystal indicating device, in the tractor and the like which have a variation in the body type by installing various working devices to a standard vehicular body. SOLUTION: In this controller with a liquid crystal indicating device, it is determined whether a plowing depth setting dial is connected to the controller or not when power is turned on. If the plowing depth setting dial is determined as being connected to the controller, the detected information is additionally indicated on a standard screen of the liquid crystal indicating device.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a configuration of a display device of a working machine such as a tractor and a combine.

[0002]

2. Description of the Related Art Conventionally, a working machine such as a tractor includes a controller having an input unit and an output unit, and a liquid crystal display device that is controlled by the controller. In addition, in general vehicles, in order to ensure safety during driving, if there is a danger point, a liquid crystal display device displays characters to be confirmed or guidance to an operator in characters.

By the way, in the tractor and the like, various working devices are mounted on a standard vehicle body to form different types of vehicle bodies. For proper display,
A dedicated controller is used for each type, or a switch for specifying the type of the tractor is provided, and the operator specifies the type.

[0003]

According to the present invention, in view of the above problems, a display device of a working machine is constituted as follows. That is, according to the first aspect of the present invention, in a working machine including a controller having an input unit and an output unit and a liquid crystal display device 1 that is display-controlled by the controller, the controller includes: The display device of the working machine is provided with display changing means for changing a display format of the liquid crystal display device 1 in a normal state according to a connection state. According to a second aspect of the present invention, in a working machine including a controller having an input unit and an output unit and a liquid crystal display device 1 controlled to be displayed by the controller, the controller is connected to a sensor read by the controller. The display device of the working machine is provided with display change means for additionally displaying the detection information of the sensor on the standard screen of the liquid crystal display device 1 according to the situation.

[0004]

In the working machine, the connection status of the sensor is read from the controller, and the liquid crystal display device 1 is read in accordance with the connection status.
Change the display format of.

[0005]

As a result, costs are increased by using a dedicated controller for each type, and there is no need to provide a switch for designating the type of the tractor or the like, and troublesome and erroneous designation by the operator.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A meter panel used for a tractor will be described. The meter panel 2 is mounted on the upper surface of the dashboard below the steering handle. The meter panel 2 is provided with a tachometer 3, an hour meter 4, a turn signal lamp 5 and the like in the center, a water temperature meter 6 and a fuel meter 7 on the left, and a liquid crystal display device 1 on the right. And a shift position lamp 9 indicating a shift position such as a main shift and a sub shift. A monitor lamp 10 is provided above these components.

As shown in FIG. 3, a control circuit for a character display device using a liquid crystal display of a tractor includes a meter BOX having a controller for performing a liquid crystal display, a tachometer 3 display, etc. Control box C-BOX1 as a host for performing control, etc.
In addition, the controller C-BOX2 for speed change control and the controller C-BOX3 for performing full-time four-WD switching control can perform synchronous (synchronous) communication with these controllers. The C-BOX 1 is configured to be capable of asynchronous (asynchronous) communication with a terminal of a microcomputer checker and a terminal of work management for managing data to be transmitted, control codes, and the like.

The communication between the control boxes is C-
BOX1 as a host, other meters BOX, C-BO
X2, transmitted and received between each control box of C-BOX3, each meter BOX, C-BOX
2. It downloads information from the C-BOX 3 and issues an instruction to each controller based on an instruction from a microcomputer checker or the like.

Circuits having these controllers are shown in the tables of FIGS. 4 to 7.
As shown in Table 1, the transmission request to the OX and the main information of the data transmission are set by the sensor depth and control mode of the C-BOX 1 and the tillage depth setting dial serving as a sensor for detecting the setting operation of the operator of the present invention. Set value, C-BOX
2, the main information of the data transmission from the meter box to the C-BOX 1,
As shown in Table 2, the number of rotations of the wheels, the number of rotations of the power take-off shaft PTO, the meter information, and the like are shown.

[0010]

[0011]

The information transmitted from the C-BOX 1 to the C-BOX 2 is a control mode (a data transmission request or an actuator output request), and the information of the output request includes a boost solenoid output, as shown in Table 3. There is a shift output and other outputs. The transmission data from the C-BOX 2 to the C-BOX 1 is, as shown in Table 4, an engine speed, a wheel speed, general information, a shift position, a sensor input, and the like.

[0013]

[0014]

The information transmitted from the C-BOX 1 to the C-BOX 3 is a control mode (data transmission request or actuator output request), and is transmitted from the C-BOX 3 to the C-BOX 3.
As shown in Table 5, the transmission data to X1 includes an input rotation speed, an output shaft rotation speed, a steering wheel turning angle sensor,
C-BOX3 input information.

[0016]

In the control circuit as described above, the operation relating to the liquid crystal display device is performed in accordance with the flow of a control program serving as a display changing means in FIG. The meter panel 2
On the screen of the liquid crystal display device 1 using the liquid crystal, a vehicle speed (km / h) is displayed at an upper position on a right half and a rotation speed (rpm) of a PTO shaft is displayed at a lower position as a standard screen in a normal state. Each display area is provided so as to display the tillage set value in the left half.

There are three types of meter display formats on the standard screen, A, B, and C as follows (FIG. 8). A type: Only the vehicle speed and the PTO shaft rotation speed are displayed. The vehicle speed is displayed by converting the vehicle speed by a detection pulse from the wheel rotation sensor (every 500 msec). Display range is 1
１４14.9 km / h and when detecting less than 1 km / h,
It is simply displayed as "Chasok". This is a measure for suppressing flickering of the display at a low rotation speed so as not to give an uncomfortable feeling to the operator. In addition, the PTO rotation is converted and displayed based on the PTO rotation sensor detection pulse (for example, 500 msec).
c). As for the display, 100 rpm or more is displayed in response to the detection, and less than 100 rpm is simply displayed as “PTO”.

Type B: The vehicle speed and the number of revolutions of the PTO shaft
Same as A type. About tillage setting, C-BO
It is additionally displayed based on the data transmitted from X1 (FIG. 9). C type: The display is changed by the shift position data transmitted from C-BOX1. When the shift position is at the H speed, the vehicle speed at the rated engine speed is displayed in a blinking manner upon detection of a change in the shift position, and the display is switched to the A type display upon detection of 1 km / h or more by a vehicle speed pulse. Shift position is L
At the L, L, and M speeds, the vehicle speed at the rated engine speed based on the shift position is displayed. The rotation speed display of the PTO shaft is A
Same as type. The tillage depth setting is the same as the B type.

The determination of each of the types A, B, and C is performed based on the presence or absence of communication access from the C-BOX 1 within three seconds after the power is turned on. C-BOX1
A-type, C-BOX without communication access from
There is a communication access from 1 and C-BO in the communication data
X type with / without information is B type and C-BO
There is a communication access from X1, and CB in the communication data
Those with and without OX2 information are of type C. Note that the display screen is displayed in the A type until the first communication is completed, and the display shifts after completion. In the meter BOX controller having the tractor liquid crystal display device 1 configured as described above, a dedicated controller is required depending on the type of the tractor, and the cost is increased, and a switch for designating the tractor type is used. Is provided to eliminate the trouble and error of designating by the operator.

Items displayed on the liquid crystal display device 1 as the interrupt screen include those displayed at the start, those displayed during operation, and those displayed abnormally. Of these, those displayed at the start are shown in FIGS. 10D to 10G based on various conditions, and flashed until the conditions are released. These items guide the operator according to the display.

FIG. 11H shows what is displayed during operation.
Is displayed based on the fuel sensor conditions.
Flashes when the condition is released and until the reset switch is pressed. At the time of this display, a buzzer is output for a certain period of time when the display is switched. The display of FIG. 11H-A blinks for a certain period of time based on the conditions. In addition, the buzzer is output for a certain period of time as described above. Such a matter,
Instruct the operator according to the display.

As shown during driving, FIG.
~ L. Judgment is made by the mode change switch, and when the switch input changes, it is displayed for a certain period of time. However, as for L “full time switch?”, The display is continued until the reset switch is pressed. Each of these displays is confirmed by the operator. As an abnormal display, FIG.
There are M to S, which are displayed based on the abnormality information sent by communication, and are displayed until the reset switch is pressed or the abnormal state is released. The display flashes. This display is also confirmed by the operator.

[Brief description of the drawings]

FIG. 1 is a plan view of a meter panel section of a tractor.

FIG. 2 is a flowchart of a character display control unit.

FIG. 3 is a block diagram.

FIG. 4 is a block circuit diagram of a controller (meter box).

FIG. 5 is a block circuit diagram of a controller (C-BOX1).

FIG. 6 is a block circuit diagram of a controller (C-BOX2).

FIG. 7 is a block circuit diagram of a controller (C-BOX3).

FIG. 8 is a plan view showing a character display mode.

FIG. 9 is a plan view showing a character display mode.

FIG. 10 is a plan view showing a character display mode.

FIG. 11 is a plan view showing a character display mode.

FIG. 12 is a plan view showing a character display mode.

FIG. 13 is a plan view showing a character display mode.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Liquid crystal display device 2 Meter panel 3 Tachometer 4 Hour meter 5 Turn signal lamp 6 Water temperature meter 7 Fuel meter 8 Reset switch 9 Position lamp 10 Monitor lamp

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Shoji Komoda 1 Yakura, Tobe-cho, Iyo-gun, Ehime Prefecture Iseki Agricultural Machinery Co., Ltd.

Claims (2)

[Claims] 1. A working machine including a controller having an input unit and an output unit, and a liquid crystal display device 1 that is display-controlled by the controller.
A display device for a working machine, comprising: display change means for changing a display format of the liquid crystal display device 1 in a normal state according to a connection state of a sensor read into the controller. 2. A work machine including a controller having an input unit and an output unit, and a liquid crystal display device 1 that is display-controlled by the controller.
A display device for a working machine, comprising: display change means for additionally displaying detection information of the sensor on a standard screen of the liquid crystal display device 1 in accordance with a connection state of the sensor read into the controller.