KR101705373B1 - Display unit comprising an intuitive bucket interface - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device including an intuitive bucket interface, and more particularly to a display device in a construction machine such as a wheel loader in which various conditions of a bucket (bucket working height, working angle, loading load, To provide information intuitively, a segment indicator for indicating the upper limit / lower limit of the work height of the bucket; And a bucket-shaped bucket icon indicated by a slope corresponding to a position corresponding to a working height of the current bucket and an operating angle of the current bucket within the interval marker, thereby intuitively adjusting the working height and working angle of the bucket being currently operated The operator can visually confirm the state of the bucket at the time of bucket operation and intuitively grasp the bucket through the bucket interface in the display device.

Description

A display device comprising an intuitive bucket interface,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device including an intuitive bucket interface, and more particularly, to a display device in which a bucket is driven by a worker on a cockpit of a relatively high position in a construction machine such as a wheel loader, To a display device including a bucket interface that can intuitively provide information on the state of a bucket currently being operated (bucket working height, working angle, loading load, etc.).

An operator of a construction machine, such as a wheel loader, is carried on a cockpit in a high position due to the nature of the vehicle. When a worker at such a high position performs work using the bucket, the sense of distance and parallel feeling between the worker and the bucket of the wheel loader are likely to relatively decrease. As a result, even when skilled workers are excluded from the skilled worker, the bucket becomes parallel to the ground, or the bucket is subjected to a heavy burden when the worker is in close contact with the ground. This increases the fatigue of the worker And a decrease in the work rate.

In order to alleviate this inconvenience, a display device such as an LCD is provided in the cockpit of an ordinary construction machine to express information required according to various work conditions of a construction machine. .

The information provided to such a display device may include, for example, a plurality of pieces of information including information on the wheel loader vehicle itself in addition to the operation status of the bucket, and for example, A method of grouping these information on the basis of a plurality of sub-screens and then switching between the sub-screens is also used.

However, it is not so easy to check the status of the bucket currently in operation among the information provided while switching among the plurality of sub-screens, or a lot of information individually displayed in the limited space LCD, .

SUMMARY OF THE INVENTION The present invention is directed to a display device for a construction machine, which includes a bucket interface of a complex configuration capable of intuitively expressing the state of a bucket currently being operated.

The present invention relates to a display device for displaying various kinds of information related to the operation of a construction machine, which includes a bucket interface in which information transmitted in real time from a construction machine about a currently operating bucket is displayed through a predetermined conversion, An interval indicator indicating an upper limit / lower limit of the work height of the bucket; And a bucket-shaped bucket icon indicated by a slope corresponding to a position corresponding to the work height of the bucket and an operation angle of the bucket within the interval indicator, thereby intuitively expressing the work height and the work angle of the bucket being currently operated The present invention provides a display device including an intuitive bucket interface.

In the present invention, when the information on the load placed on the bucket is also transmitted in real time, the load factor is calculated from the load, and the bucket icon is changed to a predetermined color for a predetermined interval according to the calculated load factor .

Further, in the present invention, the bucket interface may further include an upper numeric display section disposed immediately above the section indicator, a lower numeric display section disposed immediately below the section indicator, and a central numeric display section superimposed on the bucket icon, , The values relating to the work height and the load ratio are displayed numerically on the corresponding numerical display section.

Further, in the present invention, the display device further includes a plurality of sub-screens that can be switched according to the information to be displayed, and the bucket interface is continuously displayed at one point of the display device regardless of switching to the sub- .

The display device including the intuitive bucket interface according to the present invention allows the operator to intuitively and visually receive information about the bucket being currently operated by the display device so as to alleviate the burden on the operator, And can result in the improvement of the working rate.

FIG. 1 is a schematic view showing a conventional wheel loader with a bucket on its front face.
FIG. 2 illustrates an example of a screen of a display device in a wheel loader cockpit according to an embodiment of the present invention.
Figures 3A and 3B illustrate examples of bucket interfaces, each of which is configured in a different type.
Figures 4A and 4B together show an example of a bucket interface corresponding to the operational state of any bucket.
Figure 5 shows a series of exemplary bucket interfaces that are displayed corresponding to the operational status of the bucket, respectively.
Figure 6 is a flow diagram illustrating a method for displaying a bucket interface in accordance with another embodiment of the present invention.

Hereinafter, a display device including a bucket interface according to the present invention and its configuration will be described with reference to the accompanying drawings.

Fig. 1 is a schematic view showing a conventional wheel loader 10 around a front surface provided with a bucket 20. Fig. 1, the wheel loader 10 includes a bucket 20 disposed at the front of the vehicle, a boom 30 for supporting the bucket, and a bucket cylinder 22 and a boom cylinder 32 for driving the same. And driving means. In addition, the wheel loader 10 is provided with a cockpit 40 on which a worker can ride. Usually, the cockpit 40 is generally disposed at a relatively high position in the vehicle as shown in the figure.

In the wheel loader 10 having such a configuration, for example, by driving the boom cylinder 32, the height of the bucket 20 is adjusted up and down while the boom 30 is rotated around a portion coupled to the vehicle, The bucket 20 is tilted at a predetermined working angle while the cylinder 22 is driven to rotate about the portion where the bucket 20 is coupled to the boom 30. [ For example, when the work is performed on the ground or near the ground, the boom cylinder 32 contracts to lower the height of the bucket 20. When the work is performed at a predetermined height from the ground, The height of the bucket 20 can be increased to a corresponding height. The bucket cylinder 22 can also adjust the working angle of the bucket 20 by rotating the bucket 20 about one point of the bucket coupled to one end of the boom 30 through contraction and expansion.

In such a wheel loader 10, the state of the bucket currently in operation can be acquired as various types of information. For example, the information that can indicate the working state of the bucket includes the work height of the bucket, the working angle of the bucket, the load placed on the bucket, and the load factor that can be calculated from the load weight.

This information can each be measured by the corresponding sensor (s). For example, a boom angle sensor 52, which is provided on a coupling portion connected to a vehicle and rotatably supported by the boom to measure the angle of the boom 30, a bucket 20 for driving the bucket 20, A bucket angle sensor 54 provided on the cylinder 22 for measuring the angle of the bucket 20 and a load placed on the bucket at a point where the boom cylinder 32 is connected from the lower portion of the vehicle A weighing sensor 56 for measuring the weight (weight) of the wafer W may be formed.

In addition, a vehicle equipped with a bucket may be further provided with a calculation system for calculating a specific value in association with the sensors. The calculation system includes an angle sensor system (angle a sensor system (not shown), and a weighing system (not shown) that calculates the weight loaded on the bucket and calculates the real time load.

Values measured in real time from these sensors 52, 54 and 56 can be calculated through these sensors and the calculation system as the working height of the bucket, the working angle (slope of the bucket), the load, and the load factor.

It is also apparent that these sensors are exemplary and that different types of sensors other than these sensors may be located at different points in the vehicle to provide the desired measurement values to those skilled in the art.

For reference, the work height of the bucket expresses the height of the bucket from the ground. This can be obtained by calculating or correcting the measured value obtained from the boom angle sensor or the like through a predetermined calculation using the angle sensor system. For example, the bucket may be driven at any working height between 0 m, the height at which the bucket is in contact with the ground, and 2.5 m, at which the bucket is at its maximum raised height.

Further, the bucket working angle represents, for example, the inclination of the bucket during the operation, which can be obtained by calculating or correcting a measured value obtained from a bucket angle sensor or the like through a predetermined calculation using an angle sensor system have.

The load and the load factor loaded on the bucket mean the load value of the load placed on the bucket and the load applied to the bucket on the bucket respectively. Or by performing a predetermined calculation using the calculation.

The load factor calculated from the load system can be calculated by using a sensor (for example, a load sensor) such as a pressure gauge provided in a portion supporting the load (for example, a joint portion of a boom cylinder with respect to the vehicle) And when the load is loaded and when the bucket having the loaded load moves to a higher working position, the difference may be calculated based on the difference in pressure. For example, even when the same load is loaded, the load factor can be changed according to the working height of the bucket.

On the other hand, the load factor can be expressed in percentage units expressed in the range of 0 to 100%. For example, if no load is loaded on the bucket, the load factor will be 0%, and if the load is maximally loaded on the bucket and the work height of the bucket is increased for the job, then the load factor will be close to 100% . If the load factor exceeds 100%, this may lead to dangerous situations such as overturning of the vehicle or inability to control the bucket as the work progresses.

Such information about the bucket is expressed through a display device such as an LCD provided in the cockpit, and an operator should be able to intuitively and visually confirm information about the bucket by looking at the display device at the time of operation.

2 shows an example of a screen of a display device provided in a cockpit of a construction machine such as a wheel loader according to an embodiment of the present invention. 2, the display apparatus 100 includes one or more gauge display units 110 and 120 (for example, two gauge display units are shown in FIG. 2) that can be selectively displayed according to a current operation state, A display unit 130, a warning lamp 140, a time display unit 150, and the like.

In the gauge shown in FIG. 2, various gauges for expressing various information can be selectively used. A number of gauges may be used, including, for example, coolant temperature gauges, transmission temperature gauges, fuel gauges, and engine combustion accelerating enzyme gauges, and the like. In addition, these gauges may be displayed in a single screen as shown in FIG. 2, or may be displayed in a plurality of sub-screens that are switched according to each operation state.

In addition, the display device 100 of FIG. 2 further includes a bucket interface 200 according to an aspect of the present invention. The bucket interface 200 may be disposed, for example, in the upper right portion of the display device. As described above, in the case where a plurality of sub-screens are switched in the display device 100 such as an LCD, the bucket interface 200 can display one point of the display device 100 For example, the upper right portion).

In addition, since the size of the bucket interface provided according to the feature of the present invention is relatively small in comparison with the size of the display device, even when the display device is switched to the sub screen, a space in which the bucket interface can be expressed It is easy enough to do. That is, even when the screen of the display device is switched to the sub screen, the bucket interface 200 according to the feature of the present invention can be continuously displayed at one point (for example, the upper right portion) of each sub screen.

In the present invention, the bucket interface of the present invention is described on the basis of being displayed in a display device such as an LCD in a cockpit, but this is not necessarily the case. For example, the bucket interface of the present invention may be displayed on other display devices outside the vehicle, not on the LCD in the cockpit.

For example, the bucket interface may be transmitted to a separate electronic device such as a smartphone and displayed on the screen of the electronic device, taking advantage of its small size. Although it is not specifically described in the present invention with respect to the wireless communication technology and the like required for this purpose, it is obvious to those skilled in the art that a display screen of a certain condition is transmitted to a screen of a portable electronic device such as a smart phone via wireless and displayed Technology.

This feature is based on the fact that the bucket interface according to the present invention is configured with a relatively small size so that various information can be expressed intuitively and intuitively.

A specific example of the bucket interface 200 will be described with reference to Figs. 3A and 3B. 3A, the bucket interface 200 includes, for example, a section indicator 210 of the shape "]" indicative of the upper and lower limits of the work height of the bucket, Shaped bucket icon 220 indicated by a slope corresponding to the position corresponding to the height and the working angle of the current bucket.

For reference, the interval indicator 210 is shown in the form of a "]" in the present application, and the features of the present invention are described based on this shape, but the shape of the interval indicator is not necessarily limited thereto. For example, if the upper limit and the lower limit of the bucket interface are displayed in the display device and the relative position (height) of the bucket icon positioned between the upper limit and the lower limit can be intuitively displayed, any arbitrary shape can be applied Note the point.

As described above, the bucket icon 220 is displayed at a position corresponding to the work height of the bucket currently in operation in the interval indicator 210, and is displayed at a slope corresponding to the work angle of the bucket being currently operated, The status of the bucket can be intuitively communicated to the operator. That is, various information (measurement values or data) transmitted in real time from a plurality of sensors attached to the vehicle (for example, a boom angle sensor, a bucket angle sensor, and a load sensor) The sensor system and the load system), and then the bucket icon 220 of the position and slope corresponding to these calculated values is displayed in the interval indicator 210, Information about the in-bucket can be delivered to the operator in real time and intuitively.

On the other hand, the position (height) of the bucket icon can be displayed in the segment marker linearly proportional to one-to-one correspondence with the work height of the current bucket. On the other hand, the slope (angle) of the bucket icon can divide the working angle of the bucket currently in operation into a predetermined section, and display a predetermined slope for each section. For example, a bucket icon may be displayed in a plurality of preset (slanted) icons: a leftward tilted, a horizontal, a rightward tilted, and an inverted state (e.g., The buckets can be divided into the previously set buckets according to the previously set buckets, and then the prepared buckets can be displayed as corresponding icons. That is, unlike the bucket's working height, the bucket's working angle need not necessarily correspond to the slope of the bucket's interface's bucket icon one-to-one.

In addition, the bucket icon 220 may be displayed in a different color predetermined for each section according to a predetermined interval with respect to the load factor according to a load rate calculated based on information transmitted in real time from the bucket, as described above. For example, a load ratio of 0 to 100% may be divided into predetermined intervals, and different colors may be designated for the intervals. Thereafter, when displaying the bucket icon on the display device, the bucket icon is displayed in a color corresponding to the section in which the current load factor belongs, instead of simply displaying the bucket icon using only the position and the inclination, And can be intuitively provided to the operator.

For example, the load factor may be assigned a color by a predetermined interval as follows. First, green can be designated for a load within a section in which a vehicle such as a wheel loader can smoothly work, that is, a load ratio. Next, a yellow color may be designated for the in-zone load factor, which is close to the risk of the vehicle being rolled over when the vehicle is working with the bucket. Finally, when the vehicle is working with a bucket, a red color may be assigned to the load factor of the section where the vehicle is overturned or the vehicle is damaged.

For example, if the load factor is predetermined in these intervals, the work of the wheel loader is also used in a state where the bucket icon is displayed in green, and in some cases, the bucket icon is displayed in yellow, It may be desirable that the operation is immediately stopped.

The boundaries between these intervals are not specially specified, they may be experimentally defined through testing for individual wheel loaders, or the boundaries may be set with some correction in addition thereto.

In this embodiment, the load factor is divided into three sections, but the present invention is not limited thereto. For example, if necessary, the interval of the load factor may be divided into more or less intervals, and the corresponding number of colors may be specified in advance for each interval. For example, if a more detailed grasp of the load factor is required in carrying out the bucket operation, the load factor may be predetermined to be divided into four or more intervals, so that four or more colors may be specified in advance for each interval.

In addition, as shown in FIG. 3B, the bucket interface 200 of the present invention may further include an interface represented by a numerical value.

For example, an upper numeric value display unit 232 disposed immediately above the interval indicator 210, a lower numeric value display unit 236 disposed directly below the interval indicator 210, and a bucket icon 220 And a central numeric display unit 234. These numerical display units can display the information transmitted in real time with respect to the current bucket being digitized, respectively.

For example, in the upper numeric display section 232, the load load on the bucket can be displayed in units of tones (t). In addition, the load factor calculated using the upper load value may be displayed in percentage (%) in the central numeric display section 234. [ In addition, the work height of the bucket currently being operated (i.e., the height of the bucket lifted from the ground) can be displayed in units of meters (m) in the lower numerical value display unit 236. [

As described above, the color of the bucket icon is displayed in accordance with the load factor, and the value of the central numerical value display unit, which expresses the load factor in the digitized numerical value, is displayed in the same color as the bucket icon . For example, a percentage indicating the load factor may be displayed by changing its color, with green indicating smooth operation, yellow indicating a risk approach, and red indicating a risk of overturning.

Thus, by providing the bucket interface 200 with the interval indicator 210, the bucket icon 220, and the numeric display units 232, 234, and 236, The status of the bucket under work can be expressed intuitively and intuitively.

For example, the operator can intuitively recognize the work height, the work angle, and the load rate of the current bucket through the position, inclination, and color of the bucket icon in the interval marker, and simultaneously display on the upper and lower portions of the interval marker, The more detailed bucket status can be grasped through each numerical value (load, load rate, height) displayed in superposition.

As such, the bucket icon of the graphical requirement, and the digitized value indicated with the icon, the status of the current bucket can be displayed intuitively and intuitively. If a display device including such a bucket interface is used, the operator can receive information on the status of the current bucket on a display device such as an LCD through a graphical (bucket icon) and digitized numerical values intuitively and in real time .

Next, referring to Figs. 4A and 4B, an example in which the bucket interface is actually utilized based on the vehicle state of the wheel loader (for example, the state of the bucket being operated) will be described.

FIG. 4A also shows a vehicle image in a state in which the bucket is brought into close contact with the ground to load a load like a dirt into the bucket, and a bucket interface 200a represented on the display device at this time. 4A, since the bucket 20 maintains the angle for loading the load in close contact with the ground, the bucket icon of the bucket interface 200a is also located at the lowermost portion of the interval indicator, It can be seen that this is represented by the slope corresponding to the angle. In addition, since the load is not yet loaded, it can be confirmed that a value of 0% is displayed in the central numeric display portion for displaying the load ratio. Naturally, a value of 0 t is displayed in the upper numeric display portion for displaying the load, and a value of 0 m is displayed in the lower numeric display portion for displaying the bucket height.

Therefore, the operator can directly observe the state of the bucket with the naked eye, and at the same time, confirm the state of the current bucket based on the bucket interface displayed on the cockpit display device. Since the load factor is 0% in Fig. 4A, the color of the bucket icon will be displayed, for example, in green. The digitized value "0%" indicating the load factor can also be displayed in green.

Next, FIG. 4B shows a vehicle shape in which the bucket is lifted to the maximum from the ground, and a bucket interface 200b represented by the display device at this time. The bucket icon of the bucket interface 200b is located at the top of the interval indicator and the bucket icon of the bucket interface 200b is located at the top of the interval indicator, It can be seen that this is represented by a slope (inverted bucket icon) corresponding to the working angle. In addition, since the loaded load has already been poured out, it can be confirmed that a value of 0% is displayed in the central numerical display portion for displaying the load ratio. Naturally, a value of 0 t is displayed on the upper numeric display portion for displaying the load, and a value of the maximum height, for example, 2.5 m, is displayed on the lower numeric display portion for displaying the bucket height. 4B, since the load factor is 0%, the color of the bucket icon will be displayed in green, for example, as in FIG. 4A. The digitized value "0%" indicating the current load factor can also be displayed in green.

If the load is not poured in the bucket, the numerical display of the load factor and load in the bucket interface will be expressed as a non-zero value corresponding to the loaded load. The color of the bucket icon and the color of the numerical value displayed on the numeric display portion of the load factor may also be determined based on the load factor of the current bucket, for example, green depending on the section to which the current load factor belongs, Yellow, or even red.

Also, the operator can directly observe the state of the bucket with the naked eye, and at the same time, visually confirm the status of the current bucket intuitively and in real time based on the bucket interface displayed on the display device in the cockpit.

Next, FIG. 5 shows various exemplary bucket interfaces that are displayed corresponding to the working conditions of the bucket (in particular, the working angle), respectively. FIG. 5 shows a plurality of bucket interfaces sequentially representing a series of processes of loading a bucket with a load like a dirt load and then lifting the bucket. According to FIG. 5, the leftmost first bucket interface loads a load of, for example, 10.5t into the bucket. At this time, the slope of the bucket icon indicates the working angle for loading the load with the bucket. At this time, the work height of the bucket is indicated as 0.2 m, and the load factor is indicated as 90%.

Next, the second and third bucket interfaces are identical to the first bucket interface, except that the bucket's working angle is different. Finally, the fourth bucket interface represents the state that the bucket is lifted, for example, to a maximum work height of 2.5 m. As the bucket is lifted, the work height of the bucket has been changed from 0.2 m to 2.5 m, and the position of the bucket icon in the bucket interface is also moved to the top of the section marker. It can also be seen that as the bucket is lifted, the load factor in the bucket interface is changed from 90% to 98% with respect to the load loaded in the bucket. This means that the load and the load ratio do not necessarily match, which means that a predetermined computation system (e.g., a load system) is mediated between the load and the load ratio. It is obvious to a person skilled in the art that such a predetermined arithmetic system can be arbitrarily set or set in a specific form according to individual wheel loaders or the like.

Next, Fig. 6 is a flowchart showing a method for displaying a bucket interface in a display device according to another embodiment of the present invention. With respect to the bucket interface as described above, the bucket interface can be specified and expressed in the display device using real-time measurement values (data, i.e., information) transmitted from the construction machine with respect to the bucket being currently operated. Such a method may be implemented by a control device (for example, a central processing unit that controls the entire vehicle, etc.) including a computing device and the like actually provided in the vehicle.

For example, the method begins with step 310 of acquiring data from the bucket angle sensor. Subsequently, step 320 of obtaining data from the boom angle sensor and step 330 of acquiring data from the load sensor are performed. Also, these steps 310, 320, and 330 may be performed simultaneously or sequentially, changing order.

A plurality of elements for specifying the bucket interface, such as the angle of operation of the bucket, the working height, the loading load, and the load ratio, are calculated from the acquired data, for example, by a predetermined calculation using an arithmetic system such as an angle sensor system and a load system combined with these sensors (Step 340). ≪ / RTI > The height, position, angle, and color of the bucket icon are calculated (step 350) using the calculated result values, and the position, specific slope, Color bucket icon (step 360).

In addition, in step 360, corresponding values are displayed as digitized numerical values in the upper and lower numeric display sections of the interval indicator and the central numeric display section superimposed on the bucket icon, so that the information can be more clearly expressed in numerical values Can be expressed.

This series of steps is repeated in real time according to the actual work operation of the current bucket, so that the current bucket status can be clearly communicated to the worker through the intuitive bucket interface.

As described above, since the display device including such an intuitive bucket interface is provided, the operator using such a display device can intuitively set the state of the current bucket when driving the bucket in the cockpit of a relatively high position Therefore, even when the operation of the bucket is in close contact with or parallel to the ground, unlike the conventional case, the bucket is not overloaded. Further, the fatigue of the worker may be reduced and the work rate may be increased.

10: Wheel loader 20: Bucket
22: bucket cylinder 30: boom
32: boom cylinder 40: cockpit
52: Boom angle sensor 54: Bucket angle sensor
56: Load sensor
100; Display device 110, 120: Gauge display part
130: gear display unit 140: warning lamp
150: Time display unit
200: bucket interface 210: interval indicator
220, 200a, 200b: bucket icon 232:
234: Central number display part 236: Lower number display part

Claims (4)

A display device for displaying various kinds of information relating to the operation of a construction machine,
Wherein the bucket interface includes a bucket interface in which information transmitted in real time from the construction machine with respect to a bucket currently being operated is displayed through a predetermined conversion,
An interval indicator indicating an upper limit / lower limit of the work height of the bucket; And
A bucket-shaped bucket icon displayed in a predetermined slope by dividing the position corresponding to the working height of the bucket and the working angle of the bucket into a predetermined section in the section indicator;
/ RTI >
Wherein the load factor is calculated from the load when the information about the load loaded on the bucket is transmitted in real time and the bucket icon is displayed in different colors predefined for each section with respect to the load factor, . delete The bucket control system according to claim 1, wherein the bucket interface further includes an upper numeric display portion disposed directly above the interval indicator, a lower numeric display portion disposed immediately below the interval indicator, and a central numeric display portion superimposed on the bucket icon And the values relating to the load, the working height and the load ratio are displayed numerically on a corresponding numerical display section. The display device according to any one of claims 1 to 3, wherein the display device further comprises a plurality of sub-screens that can be switched according to information to be displayed, Wherein the display is continuously displayed at a point on the device.

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