JP2000146665A - Alarming device of work vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an alarming device of work vehicle capable of improving convenience in use by providing appropriate operating conditions according to the state of work. SOLUTION: An alarming buzzer alarms on the capacity-reaching state of a fuel tank. An alarming control means 100 executes a capacity-reaching alarming operation to activate the alarming buzzer at the time when it is judged that fuel in a fuel tank is in a capacity-reaching state while it is judged that the fuel tank is being refueled. The alarming device is constituted so that the alarming buzzer and the alarming control means 100 may execute the capacity- reaching alarming operation at the time when a main switch MW is the ON position. The alarming device is provided with an alarming halting switch SW1 to instruct for halting the capacity-reaching alarming operation by artificial operation is constituted so that the capacity-reaching alarming operation may be continuously executed until its halting is instructed by the alarming halting switch SW1 or until the main switch MW is turned from the ON position to the OFF position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a full warning means for warning that a fuel in a fuel tank provided in a work vehicle is full, and whether or not the fuel tank is being refueled. And performing a full warning operation to activate the full warning means in accordance with determining that the fuel in the fuel tank has reached a full state in a state where the refueling is being determined. Alarm control means, and a main switch that can be switched between an on state in which power is supplied from a driving power supply to each part of the vehicle body and an off state in which power supply is stopped, wherein the alarm control means is configured such that the main switch is in an on state. The present invention relates to an alarm device for a work vehicle configured to execute the full alarm operation when.

[0002]

2. Description of the Related Art In an alarm device for a work vehicle having the above structure,
Conventionally, when it is determined that the fuel is supplied to the fuel tank by the operator while the main switch is on and the fuel in the fuel tank is full,
The alarm control means is configured to execute a full alarm operation for operating an alarm buzzer as a full alarm means. As the full alarm operation, the alarm buzzer is intermittently set to a predetermined number of times (for example, 5 to 6 times). Some times), the alarm was stopped after it was activated.

[0003]

In the above configuration, when the fuel is supplied by the operator, the inside of the tank is difficult to see, so even though the fuel in the tank is full, the fuel is further supplied without being noticed. If there is a possibility that the fuel may overflow to the outside, etc., it may be inconvenient.If it is determined that the fuel tank is full during refueling, an alarm buzzer will be activated to stop refueling, and the fuel will overflow. The fuel in the tank can be made full while avoiding inconvenience such as getting out. Therefore, the worker stops the replenishment operation immediately after the alarm buzzer is activated during refueling, so that it is not necessary to continue the alarm operation for a long time. I have to.

However, the above-described conventional configuration has the following disadvantages and has room for improvement. In other words, when performing the refueling work, the worker turns on the main switch to perform the full-capacity warning operation as described above, and then performs the replenishment work. After the operation is stopped, the operator may forget to turn off the main switch by performing another operation such as storing the fuel container used for refueling. If a long time elapses after the worker separates from the vehicle body after such refueling work, the state in which the main switch is turned on continues unnecessarily for a long time, and power such as a battery is wasted. Inconvenience had occurred.

In order to solve such inconveniences, it is conceivable that the alarm operation is continued until the main switch is turned off. Besides the control means,
For example, there is a case where a control unit for controlling work is provided, and when the main switch is turned off, the alarm operation is stopped, and at the same time, the control operation of such a control unit may be reset. Then, if the work is continued even after refueling, information on the control operation, etc., which has been executed up to that time, is reset, which may cause disadvantages such that the work cannot be performed satisfactorily.

The present invention has been made in view of such a point, and an object of the present invention is to solve the above-mentioned disadvantages and to set an appropriate operating state in accordance with a work situation so as to improve the operation. Another object of the present invention is to provide a work vehicle alarm device that can improve the convenience of the work vehicle.

[0007]

According to a feature of the present invention, there is provided alarm stop command means for instructing the alarm control means to stop the full alarm operation by manual operation, Means, when the full capacity alarm operation is started, a stop command is issued by the alarm stop command means,
Alternatively, when the main switch is switched from the on state to the off state, the full alarm operation is stopped.

Accordingly, when fuel is supplied while the main switch is on, the alarm control means determines whether or not fuel is being supplied to the fuel tank, and determines whether or not the fuel is being supplied. When it is determined that the fuel in the fuel tank is full in the state of
The full warning means is activated. Then, when the full alarm operation is started, the alarm control unit stops the full alarm operation when the stop is instructed by the alarm stop instruction unit or when the main switch is switched from the on state to the off state. Therefore, the alarm operation will continue until the worker who is refueling performs either the stop command operation of the alarm stop command means or the operation of turning off the main switch. Was distracted by other tasks such as storing the fuel container used for refueling,
Never forget those operations.

For example, when the worker leaves the vehicle body for a long time after refueling is completed, the main switch is turned off during the above-mentioned full alarm operation to stop the full alarm operation. By doing so, forgetting to turn off the main switch can be prevented. Further, in the case where the work is continued after the refueling is completed, without turning off the main switch during the execution of the full-capacity alarm operation,
Stopping the full capacity alarm operation by the stop command operation of the alarm stop command means prevents inconvenience due to the stoppage of power supply to each part of the aircraft, for example, the inconvenience of resetting the control content of the work control means. Work can be properly continued.

As a result, the alarm operation is stopped by an appropriate operation according to the situation of the work after the refueling is completed, so that the convenience of use of the working vehicle can be improved. An alarm device can be provided.

According to a second aspect of the present invention, there is provided a remaining amount detecting means for detecting a remaining amount of fuel in the fuel tank, and the alarm control means includes a fuel remaining amount detected by the remaining amount detecting means. It is configured to determine whether or not fuel is being supplied to the fuel tank based on the increase state of the fuel tank.

Therefore, the remaining amount of fuel in the fuel tank is detected, and it is determined whether or not fuel is being supplied to the fuel tank based on the detected increase in the remaining fuel amount. Detecting whether or not the fuel tank is being refueled by detecting the opening and closing of the lid provided at the filler port of the fuel tank means that refueling is performed even when the lid is opened for purposes other than refueling. As compared with the determination, it is possible to accurately determine whether or not the fuel is being supplied to the fuel tank by using the information of the fuel remaining amount detecting means in the fuel tank.

According to the third aspect of the present invention, when the time during which the remaining amount detecting means detects the full amount detection value continues for a set time or more, the alarm control means outputs the fuel in the fuel tank. It is configured to determine that the battery is full.

Therefore, for example, if it is determined that the state of detecting the full amount detection value has reached the full state after a short period of time, the inconvenience that the detection operation is performed even when the vehicle body climbs a hill. However, by avoiding such inconvenience, it is possible to accurately determine whether or not the fuel in the fuel tank is full using the detection information of the remaining amount detecting means.

According to a fourth aspect of the present invention, the full amount warning means is configured to warn the full state by a sound.

Accordingly, since the full state is notified by the sound generated from the alarm buzzer or the like, the full state can be accurately determined regardless of the state of the operator's line of sight.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a combine as a working vehicle will be described below with reference to the drawings. As shown in Figure 1, the combine
A reaping unit 12 is provided at the front of a vehicle body V having a pair of right and left crawler traveling devices 11, and a control unit 13
And a threshing unit 14 for threshing the grain stalks cut by the cutting unit 12 and a Glen tank 15 for storing grains supplied from the threshing unit 14. An engine E is provided below the driver's seat of the control unit 13, and a fuel tank 16 for the engine E is provided below the floor of the control unit 13 so that fuel such as light oil is supplied from a fuel supply port 16 a. Has become. Note that the cutting unit 12 is provided with a stock sensor S1 that turns on when there is a cut culm to be conveyed and detects that the cutting operation is being performed.

As shown in FIG. 2, a display panel C for displaying various kinds of operation information to be notified to an operator is provided on the front side of the control unit 13, and its display surface is a dot matrix type. It comprises a liquid crystal display section 1 configured as a graphic display, a charging lamp 2, a preheating lamp 3, an oil lamp 4, a caution lamp 5, a left and right turn signal lamp 6, and the like. The liquid crystal display unit 1 displays operating information such as an hour meter (operating time), an engine speed, and an 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, the control unit 13 includes a vehicle body V
A thrust lever that controls the steering of the engine, a threshing lever that operates a threshing clutch that switches on and off the power transmission from the engine E to the threshing unit 14, and a harvester that operates a cutting clutch that switches off and on the power transmission from the engine E to the cutting unit 12 A lever and the like are provided. Further, the control unit 13 is provided with an accelerator lever for changing and adjusting the number of revolutions of the engine E. Usually, after adjusting the accelerator lever to the starting position, the main switch MW described later is switched to the engine starting position. After starting the engine E, the liquid crystal display 1
The operator operates the accelerator lever to increase the output so as to reach the rated working speed (for example, 2900 rpm) while watching the display of the engine speed displayed on the screen.

The display panel C incorporates a meter controller 7 constructed using a microcomputer. As shown in FIG.
The stock sensor S1, a threshing switch S4 for detecting the on / off state of the threshing clutch, and a fuel tank 16
Each detection information of a float type fuel sensor S2 as a remaining amount detecting means for detecting the remaining amount of fuel in the inside and a rotation speed sensor S3 for detecting the output rotation speed of the engine E are inputted. On the other hand, a drive signal for the liquid crystal display unit 1 and an alarm buzzer 8 as an example of a full alarm unit is output from the meter controller 7.

The control unit 13 has an off state in which power supply from a driving power source constituted by a battery (not shown) to each part of the vehicle body is turned off, an on state in which power supply to each part of the vehicle body is turned on, and A main switch MW that can be switched between an engine start state and a start state is provided.
The switching information is input to the meter controller 7. The main switch MW is of a key switch type capable of performing the above switching operation after inserting a key. or,
The control unit 13 is provided with an alarm stop switch SW1 as alarm stop command means for instructing the meter controller 7 to stop an alarm operation described later by manual operation. On the other hand, a vehicle speed sensor S5 for detecting a vehicle speed, a neutral switch S6 for detecting a neutral traveling state, and a reverse switch S7 for detecting a reverse traveling state are provided in a mission section for the crawler traveling device 11, and the respective detection information is also provided. It is input to the meter controller 7.

The fuel sensor S2 has a float 17 which moves up and down due to a change in the liquid level in the tank 16, and holds the float 17 at the distal end side and rotates the base end side around the horizontal axis by the tank upper wall portion. Arm 17 freely pivoted
a (however, the upper rotation range is limited by the position at which it hits the stopper 19), and a potentiometer 18 for detecting the rotation angle of the arm 17a, and the vertical position of the float 17, which is detection information of the potentiometer 18. That is, the fuel level in the tank is detected based on the liquid level.

As shown in FIG. 3, using a meter controller 7 and a liquid crystal display unit 1, a remaining amount display means 102 for displaying the remaining amount of fuel in the fuel tank 16 based on the information of the fuel sensor S2. Is configured. More specifically, as shown in FIG. 4, a display segment seg which can be switched between a light-on state and a light-off state is provided at the left end of the screen of the liquid crystal display unit 1.
Are arranged side by side in a row. Here, the number of the segment seg is usually four, but when it is determined that refueling is being performed as described later, a state in which the segment seg is expanded in the lateral direction as shown in FIGS. Increases to eight. Then, the left end side of the horizontal line-shaped segment seg corresponds to the fuel remaining amount decreasing side, and the right end side corresponds to the fuel remaining amount full side, and as the fuel remaining amount increases, the segment which lights from the left end side to the right end side increases. The number increases.

The buzzer 8 warns by sound that the fuel in the fuel tank 16 is full, and the fuel level is displayed on the fuel level display means 102 indicating that the fuel is full. It is configured to display full information. More specifically, the alarm buzzer 8 is operated intermittently, and a message of "fuel full" is displayed on the screen of the liquid crystal display unit 1 as full information as shown in FIG. Is configured.

Using the meter controller 7,
It is determined whether or not the fuel tank 16 is being refueled,
In addition, the fuel tank 16
An alarm control means 100 for executing a full alarm operation for activating the alarm buzzer 8 in accordance with the determination that the fuel in the tank has become full.

Here, the alarm control means 100 determines whether or not fuel is being supplied to the fuel tank 16 (during refueling) based on the state of increase in the remaining fuel amount detected by the fuel sensor S2. When the time during which the fuel sensor S2 detects the full amount detection value continues for a set time or more, it is determined that the fuel in the fuel tank 16 is full (full). Is configured.

When the rotation speed sensor S3 detects that the engine E has changed from the operating state to the stopped state, the alarm control means 100 sets a predetermined time (for example, 20 minutes) after stopping the engine. The full-capacity alarm operation can be executed only after elapse of about 2 seconds. Thus, when the engine E is stopped for an emergency, for example, due to clogging of the exhaust stirrer, etc. during traveling of the combine, the liquid level of the fuel in the tank 16 is not stable immediately after the stop. After the liquid level becomes stable, the full alarm operation is appropriately performed.

Further, the alarm control means 100 is configured to be able to execute the full alarm operation only when the main switch MW is switched to the on state, and to turn off the main switch MW from the on state. When the engine is switched to the state, when the rotation speed sensor S3 detects the start of the engine E, and when the alarm stop switch SW1 is operated (when a stop command is issued), the full-capacity alarm is issued. It is configured to stop operation.

Hereinafter, the alarm control operation by the meter controller 7 will be described with reference to the flowcharts of FIGS. Although the processing is not described in detail, this alarm control is executed only when the main switch MW is on, the engine E is stopped, and the set time (20 seconds) has elapsed after the engine is stopped. It is configured to be.

As shown in FIG. 5, when the refueling mode is off, a process for determining whether or not refueling is in progress is executed. If the refueling mode is not in progress, the routine returns. After being turned on, a display during refueling is displayed as shown in FIG. In the “refueling display”, the number of fuel remaining display segments displayed on the left end of the screen as a bar graph is increased from the normal four to eight and enlarged, and the “refueling” display is displayed on the screen. Display the message of On the other hand, in the case of the refueling mode, the condition for canceling the refueling mode is determined. If the canceling condition is not determined, the display is made during refueling. If the canceling condition is determined, the refueling mode is turned off. Then, in the refueling mode, it is determined whether or not the fuel tank 16 is full. When the fuel tank 16 is full, a message of "fuel full" shown in FIG. A full alarm operation for intermittently operating the buzzer 8 is executed.

In the refueling determination processing for determining whether or not the fuel is being supplied, as shown in FIG. 7, the state in which the remaining fuel value obtained in the remaining fuel detection processing increases from the previous value is m. After the first counter has counted up consecutively (for example, three times), one of the quantitative states in which the remaining fuel amount does not increase or does not increase or decrease continues for n times (for example, three times). 13 times) When the second counter counts up continuously, it is determined that refueling is in progress. However, if the remaining fuel value decreases at least once from the previous value in the n counting processes, the first and second counter values are reset so that the remaining fuel value increases from the previous value. The process is repeated from the counting process of determining whether or not the state to be performed is repeated m times (for example, three times). In other words, it is possible to avoid erroneous determination of refueling due to fluctuations in the liquid level.

Similarly, in the refueling mode release determination processing for determining release of the refueling mode, as shown in FIG. 8, the state in which the remaining fuel amount decreases from the previous value is m ′ times (for example, three times). 3) After the third counter has counted up continuously, any one of the quantitative states in which the remaining fuel amount decreases or does not increase or decrease continues for n ′ times (for example, 13 times). Then, when the fourth counter counts up, it is determined that the condition for canceling the refueling mode is satisfied. However, if the remaining fuel value increases at least once from the previous value in the n ′ counting processes, the third and fourth counter values are reset so that the remaining fuel value becomes higher than the previous value. The process is restarted from the counting process for determining whether the decreasing state continues m ′ times (for example, three times). In other words, due to fluctuations in the liquid level,
It is prevented that the refueling mode is canceled by mistake.

The determination of the increase or decrease of the remaining fuel value is made in the range of the output voltage of the fuel sensor S2 (for example, 0 to 5).
V) is divided into 256 levels (the number of levels in 8-bit data), and when each fuel remaining value rises by 8 levels or more with respect to the previous value, it is determined that the fuel is increasing, and it falls by 3 levels or more. In this case, it is determined that the state is decreasing, and between the 7-level rise and the 2-level fall, it is determined that the quantitative state is neither increased nor decreased. In other words, the increase side is determined more strictly than the decrease side, thereby avoiding accidentally entering the refueling mode (the refueling mode is turned on) when refueling is not being performed.

Further, in the full capacity determination processing for determining the full capacity state, as shown in FIG. 9, the fuel sensor S2 detects the full capacity (the detected value when the arm 17a of the fuel sensor S2 is in contact with the stopper 19). Is detected, that is,
It is determined whether or not each of the remaining fuel values obtained in the remaining amount detection processing has reached the above-described full amount detection value, and if so, one full amount count value is added. When the full amount count value is cleared and the full amount count value exceeds the set value (25) and continues to reach the full amount detection value for a predetermined time (2 seconds), the full state is determined. I do.

When the full-capacity warning operation is started by judging the full state as described above, the main switch MW is switched from the on state to the off state, or the engine speed is detected by the engine speed sensor S3. When the start of the alarm is detected or the alarm stop switch SW1 is operated (when a stop command is issued), the full alarm operation (intermittent operation of the alarm buzzer, full display) is stopped. Will be.

As shown in FIG. 6, in the process of detecting and displaying the remaining amount of fuel, which is executed in another control routine, the detected value of the fuel sensor S2 is set to a set time interval (80% when the engine is operating).
ms, 20ms when the engine is stopped)
A simple averaging process is performed on the set number of sampling data (8 when the engine is operating and 4 when the engine is stopped) to obtain a fuel remaining amount value, and the number of display segments corresponding to the fuel remaining amount value is turned on.

On the other hand, when the engine E is operating with the main switch MW turned on, the refueling mode is turned off and the full fuel alarm operation is stopped (the message "FULL FULL" on the liquid crystal screen is erased). After that, it is determined whether or not the work condition of the harvesting work is satisfied. Until the work condition is satisfied, as shown in FIG. When the engine rotation is displayed and the working conditions are satisfied, as shown in FIG.
The engine load indicating the magnitude of the load is displayed by numbers from 1 to 4. Here, the working conditions are as follows 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. It is determined that the working condition is satisfied. Also, the engine load is determined based on the amount of decrease in the rotational speed from the initial rotational speed in the no-load state after being adjusted to the rated rotational speed such that the greater the decrease, the greater the load.

[Alternative Embodiment] (1) In the above embodiment, an alarm buzzer is exemplified as the full-amount alarming means 101. Is also good. Further, in the remaining amount display of the remaining amount display means 102 using the liquid crystal display unit 1, in addition to a message of "fuel full" being displayed on the display screen as full information as in the embodiment, for example, The displayed segment image may blink. The remaining amount detecting means S2 may be, for example, an ultrasonic type or a photoelectric type sensor other than the float type sensor. The remaining amount display means 102 includes, for example, an LED type display element which is individually turned on / off, in addition to displaying a segment image and changing the display state on the screen of the liquid crystal display unit 1. They may be arranged in a line.

(2) In the above embodiment, the remaining amount detecting means S
The fuel tank 16 is configured to determine whether or not the fuel is being supplied to the fuel tank 16 based on the increased state of the detection value of the fuel tank 16. Alternatively, for example, as shown in FIG.
A limit switch 16c and the like for detecting the open / close state of the lid 16b provided at the refueling port 16a are provided. When the operator performs an operation of opening the lid based on the information of the detection switch 16c, the fuel supply is being performed. It may be configured to determine that there is no Also, when fuel supply is determined based on the increase in the detection value of the remaining amount detection means S2, the specific determination conditions can be appropriately changed.

(3) In the above embodiment, the remaining amount detecting means S
The state of full fuel in the fuel tank 16 is determined when the fuel remaining amount detected in Step 2 exceeds the full amount detection value for a set time. However, the present invention is not limited to this.
A configuration in which a plurality of sensing sensors that are turned on when fuel comes into contact is provided at an upper position in the fuel tank 16, and when the plurality of sensing sensors are simultaneously turned on, it is determined that the fuel tank 16 is full. May be. Also, when the full state is determined based on the detection information of the remaining amount detecting means S2,
The specific determination conditions can be appropriately changed.

(4) In the above embodiment, the alarm operation is stopped even when the engine is started, but the main switch MW is changed from the on state to the off state without providing such a stop condition. The alarm operation may be stopped only when it is switched and when the alarm stop switch SW1 is operated.

(5) In the above embodiment, the main switch is constituted by the main switch MW which can be switched between the OFF state, the ON state and the engine start state. However, the present invention is not limited to this. It may be composed of a main switch that can be switched between the state and the ON state and a switch for starting the engine. Alternatively, instead of the main switch, a three-button switch corresponding to each state may be arranged.

(6) The work vehicle is not limited to the combine for harvesting work, but may be other agricultural work vehicles or various work vehicles for civil engineering and construction.

[Brief description of the drawings]

FIG. 1 is a side view of a 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 display contents of operation information.

FIG. 5 is a flowchart of a control operation.

FIG. 6 is a flowchart of a control operation.

FIG. 7 is a flowchart of a control operation.

FIG. 8 is a flowchart of a control operation.

FIG. 9 is a flowchart of a control operation.

FIG. 10 is a side sectional view showing a detecting unit during fuel supply according to another embodiment;

[Explanation of symbols]

 8 Full amount alarm means 16 Fuel tank 100 Alarm control means MW Main switch S2 Remaining amount detection means

 ──────────────────────────────────────────────────続 き Continued on front page F term (reference) 2B074 AA01 AB01 AC02 BA09 DA02 DB04 DC01 EA13 EB13 EC01 ED01 ED05 FA10 FB01 FB03 2F014 AA02 AB01 AB02 AB04 AC04 DA10 GA01 GA04 GA10 3D038 CA22 CA31 CB05 3E062 AA06 AB03 DA01

Claims (4)

[Claims] 1. A full-capacity warning means for warning that a fuel in a fuel tank provided in a work vehicle is full, determining whether or not fuel is being supplied to the fuel tank; Alarm control means for executing a full alarm operation for operating the full alarm means in accordance with determining that the fuel in the fuel tank has reached a full state in a state where the refueling is being performed; and A main switch is provided which can be switched between an on state in which power is supplied from a power supply to various parts of the vehicle body and an off state in which power supply is stopped, and the alarm control means is configured to switch the full state when the main switch is on. An alarm device for a work vehicle configured to execute an amount alarm operation, comprising: an alarm stop command unit that instructs the alarm control unit to stop the full amount alarm operation by a manual operation; means When starting the full amount alarm activation,
An alarm device for a work vehicle configured to stop the full-amount alarm operation when a stop is instructed by the alarm stop instruction means or when the main switch is switched from an on state to an off state. 2. A fuel cell system, comprising: a remaining amount detecting unit for detecting a remaining amount of fuel in the fuel tank; 2. The alarm device for a work vehicle according to claim 1, wherein the alarm device is configured to determine whether or not fuel is being supplied to the fuel tank. 3. The fuel control system according to claim 2, wherein the alarm control unit detects that the fuel in the fuel tank is full when the time during which the remaining amount detection unit detects the full amount detection value continues for a set time or more. The alarm device for a work vehicle according to claim 1, wherein the alarm device is configured to determine the condition. 4. The alarm device for a work vehicle according to claim 1, wherein said full-amount warning unit is configured to warn of said full state by a sound.