JP6436710B2 - Working machine - Google Patents

Description

  The present invention relates to a work machine such as a backhoe, a skid steer loader, or a compact truck loader.

2. Description of the Related Art Conventionally, a display device that displays information about a work machine (work machine information) is provided around a driver's seat of the work machine. This display device displays, for example, the engine speed, the water temperature, and the presence / absence of a warning as work implement information. Patent Document 1 discloses a display device that can display in various forms (modes).
The display device disclosed in Patent Literature 1 includes a display unit and a sub control unit that controls the display unit. The sub control unit is connected to a main control unit included in the control device or the like, and the sub control unit can display in a display form designated by the main control unit. In this patent document 1, it is possible to change the display form of a display part based on the instruction | command of the main control part.

Japanese Patent No. 5416151

In recent years, power saving has been promoted in display devices, and it is desired to reduce power consumed by the display unit. There is also a desire to adjust the luminance (brightness) of the display unit according to various situations.
Therefore, in the conventional display device, the actual situation is that the above-described demand is met by incorporating an electronic circuit or the like for reducing the light into the light emitting portion that emits light. However, when processing for dimming is added to the light emitting unit, processing for turning on, blinking, and extinguishing the predetermined light emitting unit, but not dimming, or lighting including dimming, There are processes for executing blinking, extinguishing, etc., and the process becomes complicated. That is, it is necessary to proceed with new development in order to appropriately perform dimming according to various situations while turning on, blinking, and turning off a predetermined light emitting unit.

  The present invention has been made to solve the above-described problems of the prior art, and in a display device having a plurality of light emitting units, the predetermined light emitting unit can be arbitrarily dimmed. An object is to provide a working machine that can be used.

In order to achieve the above-described object, the present invention takes the following technical means.
The work machine includes a display device and a first control unit connected to the display device, the display device and the first control unit are connected via an in-vehicle network, and the display device can transmit light. And a light-emitting unit that irradiates light onto a surface on which a predetermined figure or character is formed on a surface and a surface on which the figure or character is formed from a lower part of the panel, wherein the figure or character And a second control unit that performs driving processing of the light emitting unit, and the first control unit is a light emitting unit for dimming the plurality of light emitting units. a designation information for designating an attenuating portion, wherein the working and storage unit for storing a plurality of designated information determined according to the model of the working machine, from the plurality of specified information stored in the storage unit It extracts the specified information corresponding to the model of the machine, the extracted finger An output unit that outputs information to the second control unit via the in-vehicle network, and the second control unit is connected to the dimming unit indicated by the designation information output to the output unit. A dimming drive process is performed, and a drive process of lighting, blinking, or extinguishing is performed for other than the dimming unit, and the output unit transmits at least the designation information to the in-vehicle network. After the output, designation information corresponding to the model of the work implement is output to the in-vehicle network at regular intervals.

The second control unit is based on a lighting pattern that indicates a combination of light emitting units that perform lighting among a plurality of light emitting units, and a dimming pattern that indicates a combination of light reducing units that perform dimming among the plurality of light emitting units. Then, another lighting pattern different from the lighting pattern is created.

  ADVANTAGE OF THE INVENTION According to this invention, in a display apparatus provided with the several light emission part, it can be arbitrarily dimmed with respect to a predetermined light emission part.

It is a block diagram of a 1st control part and a display apparatus. It is a front view of the display part of a display apparatus. It is a figure which shows an example of designation | designated information. It is a figure which shows the other example of designation | designated information. It is a figure which shows the designation | designated information for every model of a working machine. It is a relationship diagram between the timer operation of the second control unit and the output of the port. It is a figure which shows a 1st lighting pattern. It is a figure which shows a dimming pattern. It is a figure which shows a 2nd lighting pattern. 1 is an overall side view of a backhoe.

Hereinafter, preferred embodiments of a working machine according to the present invention will be described with reference to the drawings as appropriate.
As shown in FIG. 8, the work machine 1 includes a lower traveling device 2 and an upper revolving unit 3. Although FIG. 8 shows a backhoe as an example of a work machine, the work machine according to the present invention is not limited to a backhoe, and may be, for example, a skid steer loader, a compact truck loader, a tractor, or the like. In the present invention, the front side (left side in FIG. 8) of the driver seated in the driver's seat of the work machine is front, the rear side (right side in FIG. 8) is rearward, and the left side of the driver (front side in FIG. 8). Side) is the left side, and the right side of the driver (the back side in FIG. 8) is the right side.

The traveling device 2 includes a pair of left and right traveling bodies 4 each having a rubber cover. The traveling device 2 employs a crawler traveling device in which the traveling body 4 is driven by a traveling motor. A dozer 5 is provided at the front of the traveling device 2.
The swivel body 3 includes a swivel base 12 and a work device 13 (excavation device). The swivel base 12 is supported on the travel device 2 via the swivel device 11 so as to be turnable about the vertical axis. The working device 13 is provided at the front portion of the swivel base 12. On the swivel base 12, an engine 8, a radiator, a driver's seat 9, a fuel tank, a hydraulic oil tank, and the like are mounted. Further, a cabin 14 surrounding the driver's seat 9 is mounted on the swivel base 12.

  The work device 13 includes a swing bracket 17, a boom 18, an arm 19, and a bucket 20. The swing bracket 17 is swingably supported by a support bracket 16 provided at the front portion of the swivel base 12. The swing bracket 17 is connected to a swing cylinder provided in the swivel base 12. The boom 18 is supported by the support bracket 16 so as to be swingable up and down. The boom 18 is swung by expansion and contraction of a boom cylinder 22 interposed between the boom 18 and the swing bracket 17. The arm 19 is supported by the boom 18 so as to be swingable up and down. The arm 19 swings due to the expansion and contraction of the arm cylinder 23 interposed between the arm 19 and the boom 18. The bucket 20 is supported by the arm 19. The bucket 20 swings due to expansion and contraction of a bucket cylinder 21 interposed between the bucket 20 and the arm 19.

  Instead of the bucket 20, an attachment such as a grapple, thumb, breaker, brush cutter, tilt bucket, or rotary grabble can be attached to the tip of the arm 19. For convenience of explanation, grapples, thumbs, breakers, brush cutters, tilt buckets, rotary grabbers, and the like that are attached instead of the buckets 20 are referred to as auxiliary attachments. A hydraulic oil supply unit (not shown) that supplies hydraulic oil to an actuator for operating the auxiliary attachment (hereinafter sometimes referred to as an auxiliary actuator) is provided at the tip of the arm 19.

FIG. 1 is a block diagram of a first control unit and a display device mounted on the work machine.
As shown in FIG. 1, the first control unit (control unit) 30 is a device that mainly controls a work machine, and includes an electronic circuit, a CPU, and the like. The display device 31 is a device that displays various information related to the work implement, and is installed, for example, in front of the driver's seat 9. The first control unit and the display device 31 can transmit and receive data via the in-vehicle network N1 and the like. The in-vehicle network N1 is, for example, a controller area network (CAN communication), a FlexRay (flex ray), or the like.

The first control unit 30 can control the traveling device 2, the working device 13, the engine 8, and the like. For example, a travel switch, a lever lock switch, and a starter switch are connected to the first control unit 30. The travel switch is a switch that switches the travel device 22 between high speed and low speed. The lever lock switch is a switch provided on the side of the driver's seat 9.
The first control unit 30 performs “traveling 2-speed control” that switches the traveling device 2 between high speed and low speed based on turning on or off of the travel switch. In addition, the first control unit 30 performs “unload switching control” that switches between supply and non-supply of the hydraulic oil discharged from the pump to the control valve based on ON or OFF of the lever lock switch. Further, the first control unit 30 performs “starter switching control” for switching the starter relay based on whether the starter switch is turned on or off. The first control unit 30 performs the traveling second speed control, the unload switching control, and the starter switching control, but the control by the first control unit 30 is not limited to the exemplified contents.

  A detector 32 that detects the state of the work implement is connected to the first control unit 30. For example, three detectors 32A, 32B, and 32C are connected to the first control unit 30. The first detector 32A is an engine rotation sensor that detects the engine speed, the second detector 32B is a water temperature sensor that detects the water temperature, and the third detector 32C is a fuel ( This is a fuel sensor for detecting the remaining amount. The detector is not limited to those illustrated.

  When the first control unit 30 acquires the detection information detected by the detector 32, that is, the engine speed detected by the engine rotation sensor 32A, the water temperature detected by the water temperature sensor 32B, and the remaining amount detected by the fuel sensor 32C, The first control unit 30 outputs the engine speed, the water temperature, and the remaining amount to the in-vehicle network N1. In addition, when the first control unit 30 determines that an abnormality has occurred based on the detection information (engine speed, fuel, water temperature) acquired from the detector 33 and determines that it is abnormal, Information related to warning (referred to as warning information) is output to the in-vehicle network N1. The display device 31 displays detection information (engine speed, fuel, water temperature, etc.) and warning information output from the first control unit 30 to the in-vehicle network N1.

Next, the display device 31 will be described in detail.
As shown in FIG. 2, the display device 31 has a display unit 35. The display unit 35 is a device that displays information about the work machine, and includes a panel 36 and a plurality of light emitting units 37. The panel 36 is made of a material that can transmit light. A plurality of figures are shown on the surface of the panel 36, and display contents are defined by the figures. That is, a predetermined figure is formed on the surface of the panel 36.

For example, on the surface of the panel 36 on one side in the width direction (left side in FIG. 2), a first graphic 38A indicating traveling and a second graphic 38B indicating auxiliary attachment are displayed, and a time warning is given. A third graphic 38C is shown, and a fourth graphic 38D showing a glow plug is shown.
Further, on the surface of the panel 36, a fifth graphic 38E showing a fueling device for supplying fuel is shown, a sixth graphic 38F showing a battery, a seventh graphic 38G showing a water temperature gauge, and a warning. An eighth figure 38H is shown. Various figures other than those described above are shown on the surface of the panel 36.

Each light emitting unit 37 is a member that irradiates light to the graphic shown on the panel 36, and includes, for example, an LED (Light Emitting Diode). Each light emitting part 37 is disposed on the back side opposite to the surface of the panel 36.
Specifically, on the back surface side of the panel 36, the first LED 37A that irradiates light to the first graphic 38A, the second LED 37B that irradiates light to the second graphic 38B, and the third graphic 38C are irradiated with light. 4th LED37D which irradiates light with respect to 3rd LED37C and 4th figure 38D is arrange | positioned. Further, on the back surface side of the panel 36, a fifth LED 37E for irradiating light to the fifth graphic 38E, a sixth LED 37F for irradiating light to the sixth graphic 38F, and a seventh LED irradiating light to the seventh graphic 38G. An eighth LED 37H that irradiates light to the 7LED 37G and the eighth figure 38H is arranged.

In addition, since each figure shown on the panel 36 changes with models of a working machine, it is not limited to the example mentioned above. As a matter of course, the number of LEDs is not limited to the above-described example.
The panel 36 also has scales 39A and 39B. On the panel 36, for example, a first scale 39A of the first pointer meter 40A is shown, and a second scale 39B of the second pointer meter 40B is shown. A first pointer meter 40A is provided on the side of the first scale 39A, and a second pointer meter 39B is provided on the side of the second scale 40B.

As shown in FIG. 1, the display device 31 has a second control unit 45. The 2nd control part 45 is comprised from CPU etc. and is connected to the vehicle-mounted network N1. Each LED is connected to each port of the second control unit 45.
For example, the first LED 37A is connected to the first port A1, the second LED 37B is connected to the second port A2, the third LED 37C is connected to the third port A3, and the fourth LED 37D is connected to the fourth port A4. The fifth LED 37E is connected to the fifth port A5, the sixth LED 37F is connected to the sixth port A6, the seventh LED 37G is connected to the seventh port A7, and the eighth LED 37H is connected to the eighth port 37H. A switching element such as a transistor is connected between each port and each LED.

  The 2nd control part 45 is an apparatus which controls the display mode (display form) of the display part 35, Comprising: The electronic circuit, CPU, etc. are comprised. The second control unit 45 can drive each light emitting unit 37 (LED). For example, the second control unit 45 outputs a predetermined control signal to each LED based on various signals (information) flowing through the in-vehicle network N1, and as a driving process, each LED blinks, is turned on, turned off, and dimmed. Etc. are controlled. The drive process, that is, the output of the control signal is performed by, for example, PWM (Pulse Width Modulation) control.

  The second control unit 45 turns on the first LED 37A when the work implement 1 is in a high-speed traveling state, and turns off the first LED 37A when it is not in a high-speed state. The second control unit 45 turns on the second LED 37B when the auxiliary attachment is usable, and turns off the second LED 37B when the auxiliary attachment is not usable. The second control unit 45 turns on the third LED 37C when time adjustment is necessary, and turns off the third LED 37C when time adjustment is unnecessary. The third control unit turns on the fourth LED 37D when the glow plug is operating, and turns off the fourth LED 37D when the glow plug is not operating. The second control unit 45 turns on the fifth LED 37E when the fuel is insufficient, and turns off the fifth LED 37E when the fuel is not insufficient. The second control unit 45 turns on the sixth LED 37F when the battery needs to be replaced, and turns off the sixth LED 37F when the battery does not need to be replaced. The second control unit 45 turns on the seventh LED 37G when the water temperature is an abnormal value, and turns off the seventh LED 37G when the water temperature is not abnormal. The second control unit 45 turns on the eighth LED 37H when the warning is necessary, and turns off the eighth LED 37H when the warning is unnecessary. The 2nd control part 45 blinks LED used as object among 1st LED37A-8th LED37H, when failure, etc. of a device, a sensor, etc. occur.

Whether the work equipment is high speed, whether the auxiliary attachment is usable, whether time adjustment is required, whether the glow plug is activated, whether fuel is insufficient, whether the battery needs to be replaced Whether or not the water temperature is an abnormal value can be determined from the detection information. Whether or not a warning is necessary can be determined from the warning information.
Now, in addition to performing driving processes such as lighting, blinking, and extinguishing for each LED, the second control unit 45 performs dimming as a driving process for a predetermined LED. Among the plurality of LEDs, the LED to be dimmed is designated by the first control unit 30, and the second control unit 45 performs dimming on the LED designated by the first control unit 30. For convenience of explanation, an LED designated as dimming is referred to as a dimming LED.

Hereinafter, the dimming process will be described in detail.
The first control unit 30 includes a storage unit 46 and an output unit 47. The storage unit 46 is configured by a nonvolatile memory or the like. The storage unit 46 stores designation information for designating an LED for designating dimming (dimming LED) among a plurality of LEDs.
As illustrated in FIG. 3, for example, the storage unit 46 stores designation information that designates the first LED 37A, the second LED 37B, the third LED 37C, and the fourth LED 37D as dimming LEDs. As shown in FIG. 3, the designation information is information indicating whether or not the LED is a dimming LED, for example, information indicated by 1 bit (1: dimming LED, 0: not dimming LED). It is. Note that the designation information is not limited to the exemplified contents. For example, as shown in FIG. 4, the designation information may be information indicating identification information of the LED that performs dimming.

The output unit 47 outputs the designation information stored in the storage unit 46 to the in-vehicle network N1, that is, the second control unit 45. The second control unit 45 obtains designation information from the in-vehicle network N1, performs dimming control for the dimming LED designated by the designation information, and for the LED not designated for dimming. One of the driving processes of lighting, blinking, and extinguishing is performed.
The designation information is determined according to the model of the work machine. When the type of the work machine is different, the number of LEDs provided in the display device 31, the figure associated with each LED, and the like are different. Therefore, the LED to be dimmed differs depending on the model of the work machine. For example, as shown in FIG. 5, when there are three models, the model W1 is the target of the dimming LED for the first LED 37A, the second LED 37B, the third LED 37C, and the fourth LED 37D, and the model W2 is the seventh LED 37G and the eighth LED 37H. Are the objects of dimming LEDs. In the model W3, the second LED 37B, the fourth LED 37D, the sixth LED 37F, and the eighth LED 37G are the dimming LEDs.

  Therefore, the storage unit 46 of the first control unit 30 stores designation information indicating an LED that is dimmed according to the model. For example, in the case of the first control unit 30 mounted on the model W1, the storage unit 46 of the first control unit 30 stores first designation information that is designation information corresponding to the model W1. In the case of the first control unit 30 mounted on the model W2, the storage unit 46 of the first control unit 30 stores second designation information that is designation information corresponding to the model W2. Similarly, in the case of the first control unit 30 mounted on the model W3, the storage unit 46 of the first control unit 30 stores third designation information that is designation information corresponding to the model W3.

  Now, the output unit 47 outputs the designation information to the in-vehicle network N1 at the time of activation. For example, when the first control unit 30, the second control unit 45, and the display device 31 are activated when the engine 8 is started (when the ignition switch is on), designation information is output at the time of activation. Alternatively, when the first control unit 30, the second control unit 45, and the display device 31 are activated by turning on the activation power, the first control unit 30, the second control unit 45, and the display device 31 are activated. Outputs specified information at startup.

  Specifically, the first control unit 30 extracts the designation information with reference to the storage unit 46 at the time of activation, and outputs the extracted designation information to the in-vehicle network N1 at the time of activation. After the designation information is output to the in-vehicle network N1, the second control unit 45 acquires the designation information output to the in-vehicle network N1. The storage unit 50 of the second control unit 45 temporarily holds the acquired designation information. Note that the storage unit 50 may hold the designation information until the supply of power for activation is stopped.

  The designation information designated for the dimming LED is transferred from the first control unit 30 to the second control unit 45 through the in-vehicle network N1 at the time of activation, but the output unit 47 thereafter transmits the designation information at regular intervals. Therefore, even when only the display device 31 (second control unit 45) is reset due to a voltage drop at the time of starting the engine, the second control unit 45 can receive the designation information.

The second control unit 45 performs dimming as a driving process for the dimming LED indicated by the designation information. For an LED that is not designated by the designation information, one of lighting, blinking, and extinguishing is executed as a driving process.
As described above, according to the working machine, the storage unit 46 stores the designation information designating the dimming LED (dimming unit), and the designation information stored in the storage unit 46 is transmitted from the first control unit 30 to the second control unit. In addition, the second control unit 45 can dimm the predetermined dimming unit based on the designation information. For this reason, it is possible to perform dimming on the predetermined light emitting unit 37 among the plurality.

  In particular, the display device 31 and the first control unit 30 are connected by the in-vehicle network N1, and the output unit 47 refers to the storage unit 46 to extract designation information, and outputs the extracted designation information to the in-vehicle network N1 at the time of activation. doing. Therefore, each time the first control unit 30 and the display device 31 are started, for example, by starting the engine, it is possible to designate an LED that will be a dimming LED. Moreover, since the designation information can be transmitted with a longer transmission cycle than the transmission cycle of signals from other sensors or the like, the amount of information in the in-vehicle network N1 can be suppressed.

The storage unit 46 stores designation information for designating a dimming unit determined according to the model. Therefore, a dimming LED can be designated as appropriate in accordance with various models.
6, 7A, and 7B show dimming using a timer.
FIG. 6 shows the relationship between the timer operation of the second control unit 45 and the port output (PWM output of the control signal). For example, the duty ratio of the control signal in the PWM output is 30%. The period of PWM is 152 Hz. The duty ratio and the PWM period are not limited to the exemplified contents.

  FIG. 7A shows the first lighting pattern and the dimming pattern. The first lighting pattern indicates a port that outputs a lighting control signal. In the first lighting pattern of FIG. 7A, lighting is performed from the first port A1, the third port A3, the fifth port A5, and the seventh port A7. It is shown outputting a control signal. In addition, the 1st lighting pattern shown to FIG. 7A is an example, Comprising: It is not limited to this.

The dimming pattern indicates the dimming control signal, and the dimming pattern in FIG. 7B outputs the dimming control signal from the first port A1, the second port A2, the third port A3, and the fourth port A4. Has been shown to do.
The first control unit 30 outputs the dimming condition (duty ratio) in the PWM control to the second control unit 45. Further, the first control unit 30 outputs the dimming pattern as designation information to the second control unit 45. The second control unit 45 holds the dimming condition and designation information.

As shown in FIG. 6, when the time counted down by the first timer unit 48 (see FIG. 1) reaches zero (timeout), the second control unit 45 generates an interrupt and is indicated by the first lighting pattern. Control signals for lighting the ports (first port A1, third port A3, fifth port A5, seventh port A7) are output.
In addition, when the time counted down by the second timer unit 49 (see FIG. 1) becomes zero (timeout), the second control unit 45 performs EOR (exclusive OR) of the first lighting pattern and the dimming pattern. A new second lighting pattern is created as shown in FIG. 7C by calculating an AND (logical product) of the result and the first lighting pattern. That is, FIG. 7C is a lighting pattern (second lighting pattern) created by applying the mask shown by the dimming pattern of FIG. 7B to the first lighting pattern of FIG. 7A. Then, the second control unit 45 outputs a control signal based on the second lighting pattern shown in FIG. 7C.

  As described above, the second control unit 45 creates the second lighting pattern using the first lighting pattern and the dimming pattern. Then, the control signal corresponding to the created first lighting pattern and the control signal corresponding to the second lighting pattern are switched using two timers (first timer unit 48 and second timer unit 49). As a result, it is possible to perform the lighting or dimming process simply by outputting a control signal based on the lighting pattern to a predetermined port. In particular, when the lighting time is long (when the LED to be lit is fixed), lighting and dimming can be performed efficiently. In the first timer unit and the second timer unit, the timeout is detected by counting down, but the timeout may be detected by counting up. Further, the first timer unit and the second timer unit may be separate or integrated.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims. In the embodiment described above, a predetermined figure is shown on the panel 36, but instead of this, a character may be shown. Further, the light emitting unit 37 may irradiate light on the characters shown on the panel 36.

1 working machine 30 1st control part (control part)
31 display device 35 display unit 36 panel 37 light emitting unit 45 second control unit 46 storage unit 47 output unit 48 first timer unit 49 second timer unit 50 storage unit

Claims (1)

A display device;
A first control unit connected to the display device;
With
The display device and the first control unit are connected via an in-vehicle network,
The display device
A panel through which light can be transmitted and a predetermined figure or character is formed on the surface;
A light emitting unit for irradiating light on the surface on which the graphic or character is formed from the lower part of the panel, and a plurality of light emitting units associated with the graphic or character;
A second control unit that performs driving processing of the light emitting unit;
Have
The first controller is
Specification information for designating a dimming unit that is a light emitting unit to be dimmed among the plurality of light emitting units, and storing a plurality of designation information determined according to the model of the work implement;
An output for extracting designation information corresponding to a model of the work machine from the plurality of designation information stored in the storage unit and outputting the extracted designation information to the second control unit via the in-vehicle network And
Have
The second control unit performs a dimming driving process on the dimming unit indicated by the designation information output to the output unit, and lights other than the dimming unit, Perform either the blinking or extinguishing drive process,
The said output part is a working machine which outputs the designated information corresponding to the model of the said working machine to the said vehicle-mounted network for every fixed period after outputting the said designation information to the said vehicle-mounted network at least.