JP3474086B2 - Work vehicle alarm - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work vehicle alarm system for refueling a fuel tank provided in a work vehicle.

[0002]

2. Description of the Related Art In a work vehicle such as a combine or a tractor, when refueling a fuel tank with fuel such as light oil, the remaining amount of fuel in the fuel tank is normally indicated by a pointer type fuel gauge or a liquid crystal display. Since it is displayed, the worker is refueling the tank while watching the remaining amount display.

[0003]

However, conventionally, when a large amount of fuel is to be put into the tank from the fuel filler port,
Workers often work while looking at the fuel spout,
Moreover, the inside of the tank may be dark and difficult to see, and even if the inside of the tank is full of fuel, you may not notice it, and you may continue to replenish the fuel, causing problems such as fuel overflowing from the tank to the outside. There was a fear.

The present invention has been made in view of the above circumstances, and an object thereof is to prevent the drawbacks of the above-mentioned prior art by overfilling the fuel tank during the refueling operation of the fuel tank and overflowing the tank. There is a proper avoidance of defects.

[0005]

According to the first aspect of the present invention, it is determined that fuel is being replenished to the fuel tank, and the fuel in the fuel tank is full while the fuel is being replenished. When it is determined that the fuel has been filled, an alarm is issued that the fuel in the fuel tank is full.

Therefore, when the fuel in the tank is full while the fuel tank is being refueled, an alarm is given to the worker. Therefore, as in the conventional case, the worker is full. It is possible to appropriately avoid problems such as fuel overflowing from the tank by continuing refueling without noticing.

Further, according to the first aspect, the remaining amount of fuel in the fuel tank is detected, the remaining amount of fuel in the fuel tank is displayed based on the remaining amount detection information, and the detected fuel remaining amount is displayed. If it is determined that the fuel tank is being refueled based on the increasing state of the amount, and the detected remaining fuel amount exceeds the full detection value for a set time or more,
It is determined that the fuel in the fuel tank is full.

Therefore, by displaying the remaining amount of the fuel in the fuel tank, the worker can judge whether the amount of the fuel in the tank is close to the full state or not, and perform the replenishment work more appropriately. However, it is possible to accurately determine whether the fuel tank is being refueled or whether the fuel in the fuel tank is full by using the detection information of the remaining amount detecting means.
It

According to a second aspect of the present invention, when the full state is determined in the first aspect, the full state is displayed while the remaining fuel amount in the fuel tank is being displayed in order to warn the full state. The full capacity information is displayed.

Therefore, it is possible to give an alarm to the worker who is performing the replenishing work while observing the display of the remaining amount of the fuel in the fuel tank by warning that the fuel tank is in the full state while the same remaining amount is being displayed. Therefore, the preferred means of claim 1 can be obtained.

In claim 3, during refueling of the fuel tank
It is determined that the
The fuel in the fuel tank is full when
Is determined, the fuel in the fuel tank is full.
Be alerted. Therefore, during refueling of the fuel tank
When the tank is full of fuel,
As an alarm is issued, as in the conventional
I continued to refuel without noticing that the fuel was from the tank
You can properly avoid problems such as overflowing outside
It

Further , in claim 3, the fuel in the fuel tank is
When it is determined that the engine is full, the engine
If the output speed of the
Full alarm only when it is detected to be in a stopped state.
The alarm action is performed. Therefore, for example, when the work vehicle is on a slope
The fuel in the tank will move when
Although it is not in a state, it is full from the detection value of the liquid level detection sensor etc.
Error is detected, the full alarm malfunctions.
Can be properly prevented, while the engine output
When the number of revolutions exceeds the set number of revolutions and the work vehicle stops traveling
When refueling, the
The volume status can be alerted.

According to a fourth aspect , in the third aspect, the engine is
Alarm is activated when the output speed of the engine is higher than the set speed.
If the work vehicle is running,
The full-volume alarm is stopped as the
Alarm when the output speed of the engine is less than the set speed
If you execute the
When the number exceeds the limit, the full-volume alarm is stopped.

Therefore, the output speed of the engine is set to the set speed.
When the number of vehicles exceeds the limit, the full alarm is triggered when the vehicle is stopped.
Since it is a case of refueling in a state,
Appropriate alarm stop is performed by stopping the full alarm.
The engine output speed is less than the set speed
When the engine starts when the full alarm is activated
When refueling before or after starting at low rpm
Therefore, when the engine speed exceeds the set speed, the
Appropriate alarm stop by stopping the volume alarm operation
Can be carried out, thus obtaining the preferred measures of claim 3.
Be done.

In claim 5, any one of claims 1 to 4
When the full state is determined in the section,
The condition is alerted.

Therefore, the sound generated from the alarm buzzer, etc.
As the full condition is notified, the condition such as the line of sight of the worker
Regardless of the
Therefore, it is preferable that any one of claims 1 to 4 is suitable.
Can be obtained.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention applied to a combine as a work vehicle will be described below with reference to the drawings. As shown in FIG. 1, the combine is provided with a reaping section 12 at the front of a body V provided with a pair of left and right crawler traveling devices 11, and at the rear of the reaping section 1.
3, a threshing unit 14 for threshing the grain culms cut by the mowing unit 12, a grain tank 15 for storing the grains supplied from the threshing unit 14, and the like are mounted. Fuel tank 16 for engine E provided at the lower side of control unit 13
Is provided, and fuel such as light oil is supplied from an oil supply port (not shown). The harvesting unit 12 is provided with a stock origin sensor S1 that is turned on when the grain culm touches to detect that the harvesting work is being performed.

As shown in FIG. 2, a display panel C for displaying various operating information to be notified to the operator is installed on the front side of the control section 13, and its display surface is of a dot matrix type. A liquid crystal display unit 1 configured as a graphic display, a charging lamp 2, a preheating lamp 3, an oil lamp 4, a caution lamp 5, left and right turn signal lamps 6 and the like are provided. The liquid crystal display unit 1 displays operating information such as hour meter (operating time), engine speed and engine load (see FIG. 4). The oil lamp 4 is turned on when the oil switch is turned on, the charging lamp 2 is turned on when the charging switch is turned on, and the left and right turn signal lamps 6 are turned on when the left and right turn signal lamp switches are turned on.

Although not shown in the figure, the control unit 13 has a body V.
A steering lever that controls the steering, a threshing lever that operates a threshing clutch that turns on and off power transmission from the engine E to the threshing unit 14, and a mowing clutch that operates a cutting clutch that turns on and off power transmission from the engine E to the mowing unit 12. A lever and the like are provided. A threshing switch S4 for detecting the on / off state of the threshing clutch is provided (see FIG. 3). The control unit 13 is also provided with an accelerator lever for changing and adjusting the number of revolutions of the engine E. Normally, the accelerator lever is operated to a starting position to drive the engine E.
After starting the engine, while watching the display of the engine speed displayed on the liquid crystal display unit 1, the engine is operated toward the output increasing side so as to reach the rated speed for work.

As shown in FIG. 3, the display panel C has a built-in meter controller 7 constructed by using a microcomputer.
The stock sensor S1, the threshing switch S4, a float type fuel sensor S2 as a remaining amount detecting means for detecting the remaining amount of fuel in the fuel tank 16, and a rotation speed for detecting the output rotation speed of the engine E. Each detection information of the rotation speed sensor S3 as the detection means is input, while the meter controller 7 outputs drive signals for the liquid crystal display unit 1 and the alarm buzzer 8. The meter controller 7 has a value of the rated speed of the engine E (for example, 29
00 rpm) is stored.

Further, the mission section for the crawler traveling device 11 is provided with a vehicle speed sensor S5 for detecting a vehicle speed, a neutral switch S6 for detecting a traveling neutral state, and a reverse switch S7 for detecting a reverse traveling state. The detection information is also input to the meter controller 7. here,
When the detected value of the vehicle speed sensor S5 is 0 and the neutral switch S6 is in the ON state, it is determined that the vehicle is in the traveling stopped state. Therefore, the vehicle speed sensor S5 and the neutral switch S6 detect whether the combine is in the traveling stopped state. The running state detection means is configured.

The fuel sensor S2 holds the float 17 which moves up and down according to the change of the liquid level in the tank 16, and holds the float 17 at the tip end side and rotates the base end side around the horizontal axis by the tank upper wall portion. Freely pivoted arm 17
a and a potentiometer 18 that detects the rotation angle of the arm 17a, and the remaining amount of fuel in the tank is detected by the vertical position of the float 17, which is the detection information of the potentiometer 18, that is, the liquid level. Is configured.

As shown in FIG. 3, using the meter controller 7 and the liquid crystal display unit 1, the remaining amount display means for displaying the remaining amount of fuel in the fuel tank 16 based on the information from the fuel sensor S2. 102 is configured. In particular,
As shown in FIG. 4, at the left end of the screen of the liquid crystal display unit 1, a display segment se that can be switched between a lighting state and a non-lighting state.
A plurality of g are juxtaposed in a line. Here, the number of the segment seg is normally four, but when it is determined that refueling is being performed as described later, a state in which the segment seg is horizontally expanded as shown in FIGS. Increases to 8. Here, the left end side of the line-shaped segment seg corresponds to the fuel remaining amount decrease side and the right end side corresponds to the fuel remaining amount full side, respectively. As the fuel remaining amount increases, the segments that light up from the left end side toward the right end side Display to increase the number.

A full amount warning means 101 is provided for giving an alarm that the fuel in the fuel tank 16 is in a full state. The full amount alert means 101 gives a sound to warn that the fuel is in the full state. While the remaining fuel amount display means 102 is displaying the remaining fuel amount, it is configured to display full fuel amount information indicating that the fuel tank is in a full fuel state. Specifically, an alarm sound is generated by the alarm buzzer 8 and, as shown in FIG. 4C, a message "fuel full" is displayed on the screen of the liquid crystal display unit 1 as full amount information. .

Using the meter controller 7,
It is determined whether or not the fuel tank 16 is being refueled,
In addition, the fuel tank 16 in the state that the fuel supply is being determined
An alarm control unit 100 is configured to execute a full amount alarm operation that activates the full amount alarm unit 101 when it is determined that the fuel inside is full.

Here, the alarm control means 100 determines whether or not the fuel is being replenished to the fuel tank 16 based on the increasing state of the remaining fuel amount detected by the fuel sensor S2. Specifically, the detection signal of the fuel sensor S2 is sampled at set time intervals (for example, 100 ms), and the set number of sampling data (for example, 100 ms) is set.
4) are continuously increased for a predetermined time (for example, 1 second), or the remaining fuel value obtained by the moving average processing is performed at sampling time intervals. Predetermined number of times (for example, 10
When it continuously increases, it is determined that the fuel is being replenished.

Further, the alarm control means 100 causes the fuel tank 16 to be operated when the amount of remaining fuel detected by the fuel sensor S2 exceeds the full detection value for a set time or longer.
It is determined that the fuel inside is full. Specifically, the above-mentioned remaining fuel amount value obtained by performing the moving average processing of the detection signal of the fuel sensor S2 is set to the full fuel amount value in the tank (for example, 95% of the full fuel amount value). When the full detection value set in) is continuously exceeded for a predetermined time (for example, 0.5 seconds), it is determined that the full state is reached.

Further, the alarm control means 100, based on the information of the rotation speed sensor S3, the vehicle speed sensor S5, and the neutral switch S6, when the rotation speed of the engine E is a set rotation speed (for example, 500 rpm) or more, When the combine amount alarm operation is configured to be executable only when the combine is in a traveling stop state, and when the combine amount alarm operation is executed when the rotation speed of the engine E is equal to or higher than a set rotation speed (500 rpm). Is, when the combine shifts from the traveling stop state to the traveling state, stops the full-volume alarm operation, and
When the full-volume alarm operation is executed when the engine E speed is less than the set speed (500 rpm), the full-alarm warning is issued when the engine E speed becomes equal to or higher than the set speed (500 rpm). It is configured to stop operation.

The control operation of the meter controller 7 will be described below with reference to the flow charts of FIGS. In the display and alarm control (FIG. 5), when the engine E rotation speed is less than the set rotation speed (500 rpm), it is determined whether or not refueling is in progress. The "hour meter" shown in Fig. 4 is displayed, and when refueling is in progress, the "refueling display" shown in Fig. 4B is displayed. In this "refueling display", the number of segments for displaying the remaining fuel amount displayed in the bar graph on the left side of the screen is increased from the usual 4 to 8 and enlarged, and "refueling" is displayed on the screen. Is displayed. Then, during the refueling, it is judged whether or not the fuel tank 16 is in a full state, and when the fuel tank 16 is in a full state, as shown in FIG. Is displayed, full alarm operation for operating the alarm buzzer 8 is executed, and the alarm flag is turned on.

Here, as shown in FIG. 6, the remaining fuel amount detection and display processing are executed in different control routines. In the remaining fuel amount detection / display processing, the detected value of the fuel sensor S2 is set at a set time interval ( The remaining fuel amount value obtained by performing a moving average process on the set number (4) of the sampling data is obtained, and the number of display segments corresponding to the remaining fuel amount value is turned on.

Further, in the refueling determination process for determining whether or not the refueling is in progress, as shown in FIG. 7, it is determined whether or not the remaining fuel amount value obtained in the remaining amount detection process has increased by the sampling time. Judgment is made at every interval (100 ms), and if it has increased, one refueling count value is added, and if it has decreased, the refueling count value is cleared. When the refueling count value becomes equal to or greater than the set number (10), it is determined that refueling is in progress.

Further, in the full amount determination process for determining whether or not the state is full, as shown in FIG. 8, the fuel remaining amount value obtained in the remaining amount detection process exceeds the full amount detected value. Whether or not it is present is determined for each sampling time interval (100 ms), and if it is increasing, one full count value is added, and if it is decreasing, the full count value is cleared. Then, when the full count value reaches or exceeds the set number (5), the full state is determined.

When the engine speed exceeds the set speed (500 rpm), first, the state of the alarm flag is judged,
When the alarm flag is on, the full-volume alarm is operating at less than the set number of revolutions, so the alarm operation is stopped and the alarm flag is turned off. Next, it is determined by the neutral switch S6 and the vehicle speed sensor S5 whether or not the vehicle is in the traveling stopped state, and the neutral switch S6 is in the ON state and the vehicle speed detection value is 0.
When the vehicle is in a stopped state, it is determined whether or not refueling is in progress. When refueling is in progress, the "refueling display" in Fig. 4B is displayed and the fuel tank 16 is full. In the case of the quantity state, the full quantity alarm operation is executed.

On the other hand, when the neutral switch S6 is in the off state and the vehicle speed detection value is not 0, it is judged whether or not the full amount alarm is in operation. If the alarm is in operation, the alarm operation is stopped. . Then, after the alarm operation is stopped, and when the vehicle is in the traveling stopped state and is not refueling, it is determined whether or not the working condition of the mowing work is satisfied, and until the working condition is satisfied, FIG. As shown in (d), the bar graph type engine rotation display in which the bar 1a expands and contracts in the right direction of the screen is displayed (in the figure, 1b is a mark indicating the position of the rated speed), and when the working condition is satisfied, As shown in FIG. 4 (e), the engine load, which represents the magnitude of the load, is displayed by the numbers 1 to 4. Here, regarding the judgment of working conditions,
The working condition is satisfied when the stock sensor S1 and the threshing switch S4 are on, the neutral switch S6 and the reverse switch S7 are off, and the vehicle speed detection value is 0.05 m / sec or more. To judge.

[Other Embodiments] The full-volume alarm means 101 may be, for example, an alarm lamp that blinks, in addition to a sound alarm.

The remaining amount detecting means S2 may be, for example, an ultrasonic type sensor, a photoelectric type sensor or the like, in addition to the float type sensor.

The remaining amount display means 102 is, for example, an LED type display element that is individually turned on / off, in addition to the one for displaying the segment image and changing the display state on the screen of the liquid crystal display unit 1. It may be arranged in rows.

[0038]

In the above embodiment, the full state of the fuel in the fuel tank 16 is determined based on the detection value of the remaining amount detecting means S2. However, the present invention is not limited to this. For example, the upper position in the fuel tank 16 may be determined. In addition, a configuration may be adopted in which a plurality of sensing sensors that are turned on when fuel comes into contact are provided, and when the plurality of sensing sensors are turned on at the same time, it is determined that the full state is reached.

In the above embodiment, the running state detecting means is composed of the vehicle speed sensor S5 and the neutral switch S6, but the invention is not limited to this, and may be composed of only the neutral switch S6, or parking. It may be configured by means for detecting the operation of the brake device for the vehicle.

The work vehicle is not limited to the combine harvester, but may be other work vehicles such as agricultural work vehicles and various work vehicles for civil engineering and construction.

[Brief description of drawings]

FIG. 1 Side view of combine

FIG. 2 is a plan view showing a display panel.

FIG. 3 is a block diagram showing a control configuration.

FIG. 4 is a diagram of a display screen showing the display contents of operation information.

FIG. 5 is a flowchart of control operation.

FIG. 6 is a flowchart of control operation.

FIG. 7 is a flowchart of control operation.

FIG. 8 is a flowchart of control operation.

[Explanation of symbols]

16 Fuel tank 100 alarm control means 101 full alarm means 102 remaining amount display means E engine S2 Remaining amount detecting means S3 rotation speed detection means S5, S6 Running state detection means

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B60K 15/00-15/077

Claims (5)

(57) [Claims] 1. A full amount warning means for warning that the fuel in a fuel tank provided in a work vehicle is in a full state, and determining whether or not the fuel tank is being refueled,
And alarm control means for performing a full-volume alarm operation that activates the full-volume alarm means in accordance with the determination that the fuel in the fuel tank is full while determining that the fuel is being replenished. is provided, the remaining amount detecting means for detecting the remaining amount of fuel in the fuel tank
And the fuel tank based on the information of the remaining amount detecting means.
A remaining amount display means for displaying the remaining amount of fuel in the inside, and the alarm control means is detected by the remaining amount detection means.
Fuel to the fuel tank based on the state of increase of the remaining fuel amount
It is determined whether or not replenishment is in progress, and the remaining amount detection means
The amount of fuel remaining detected at
If the fuel in the fuel tank is
An alarm device for a work vehicle configured to determine that a full state has been reached . 2. The full amount warning means is the remaining amount display means.
While the remaining fuel amount is being displayed by the
The display device is configured to display the full amount information to be displayed.
Warning device for the work vehicle described . 3. Fuel in a fuel tank provided in a work vehicle
Is a full amount warning means for warning that it is in a full state, and it is determined whether or not the fuel tank is being refueled,
In addition, in the state where it is determined that the fuel is being supplied, the fuel tank
As it is determined that the fuel inside has become full
The alarm that activates the full-volume alarm is activated.
Broadcast control means and is provided, the running state and the rotation speed detecting means for detecting an output rotational speed of the engine, the work vehicle to detect whether a running stop state
Detection means is provided, and the alarm control means is configured to detect the rotation speed detection means and the traveling speed.
The engine speed based on the information of the state detection means
The When it is larger than a predetermined rotational speed, the work vehicle running stop state der
Is configured to be able to execute the above-mentioned full alarm operation only when
Work vehicles are of the warning device. 4. The alarm control means is arranged to turn on the engine.
When the number of revolutions is equal to or higher than the set number of revolutions, the full alarm is activated.
The work vehicle moves from the stopped state to the running state.
The full alarm operation is stopped in accordance with the
When the engine speed is less than the set speed,
When the alarm operation is executed, the engine speed is set.
Stops the full-volume alarm when the number of rotations exceeds a certain value.
An alarm device for a work vehicle according to claim 3 , wherein the alarm device is configured as follows . 5. The full amount alarm means is provided with a sound to indicate the full amount.
Claims configured to warn of a volume condition
Item 5. An alarm device for a work vehicle according to any one of items 1 to 4 .