JP2800928B2 - Display of fire truck with ladder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device for a fire engine equipped with a ladder, and more particularly, to a display device for a fire engine equipped with a ladder which displays various information including a posture of a ladder attached to the fire engine.

[0002]

2. Description of the Related Art Generally, a ladder-equipped fire engine has a ladder attached to the fire engine in view of operability and safety in order to reliably perform its original function of quick and accurate rescue in the event of a building fire or the like. A display device for displaying various information including the posture state is provided.

FIG. 6 shows a conventional example of a display device of a fire truck equipped with a ladder.

[0004] As shown in the figure, the above-mentioned display device is divided into a ladder posture display section (1) and a ranging data display section (2).

[0005] The ladder posture display section (1) is an area (3) that indicates the operable range of the ladder, specifically, the working height, horizontal use range, and turning range of the basket provided at the tip of the ladder. In the area (3), a pointer (4) imitating a ladder is mounted so as to be rotatable around a fulcrum (5). In addition, the guidelines (4)
The tip of the ladder, that is, an index (6) indicating the position of the basket is movably attached along the pointer (4). The pointer (4) and the index (6) are set so as to be operated mechanically by a link mechanism (not shown) or the like built in the apparatus main body.

On the other hand, a distance measurement data display section (2) measures the distance to a target object such as a building using a laser beam by a distance measurement device (7) installed in a fire engine, and the distance measurement device (2). The distance measurement data such as distance and angle output from (7)
It is displayed by segment display or the like.

[0007] In the display device having the above-mentioned configuration, in the distance measurement data display section (2), the operator can determine the distance and angle to the target object based on the distance measurement data obtained by the distance measurement device (7). Recognize visually. Based on this, the pointer (4) and the index (6) are displayed in the ladder posture display section (1).
The operator operates the ladder and the basket with the operation lever so that the position indicated by the arrow indicates the distance and angle to the target object. In addition, as this type of display device
Are disclosed in Japanese Utility Model Laid-Open No. 55-92352 and
-47400 and the like.
Are digital displays of the posture state of the ladder etc.
is there. For example, disclosed in Japanese Utility Model Laid-Open No. 55-92352.
Is the ladder's standing angle in a fire aerial work platform
Degree, ladder length, ladder's own weight and moment due to load
Detected by potentiometer and detected by potentiometer
The electric signal to be output is processed by a computer, and the current
A display for displaying the position is provided.
Ladder length, standing angle, ground clearance, working radius, allowable load at the tip
The load is digitally displayed. In addition,
Japanese Patent Application Publication No. 54-47400 discloses a refraction type
Graphic display device in water tower car, refraction type water tower
A digital display of the operating status of the
Equipped with a display panel.

[0008]

By the way, in the above-mentioned conventional display device, although the ladder attitude display section (1) and the distance measurement data display section (2) are provided side by side, one ladder attitude is displayed. While the display unit (1) has a structure operated mechanically by a link mechanism, the other distance measurement data display unit (2) is based on the measurement signal output from the distance measuring device (7). It has a structure for displaying the distance measurement data. As a result, the ladder posture display section (1) and the ranging data display section (2)
Is simply a combination of the different items, and the display contents of the two have little direct relevance.

Therefore, in using the above display device,
As described above, the operator reads and recognizes the distance measurement data of the distance and angle to the target object on the distance measurement data display unit (2), and replaces the distance measurement data with the ladder posture display unit (1) to recognize the target. The ladder and the basket cannot be operated by the operation lever unless the position of the object is confirmed. As a result, there is a problem that it is very difficult to quickly and accurately respond to an urgent situation such as a fire , which greatly reduces workability and is inferior in operability and safety. Also, Japanese Utility Model Application Laid-Open No. 55-92352 described above and
What is disclosed in Japanese Patent Publication No. 54-47400
Only show the current position of the tip of the ladder or water tower.
Unable to recognize the position of the target object,
Use a ladder or water tower quickly for the target
It is very difficult to operate quickly and accurately
Had similar problems.

Therefore, the present invention has been proposed in view of the above problems, and it is an object of the present invention to control a ladder based on distance measurement data by a distance measuring device in an emergency such as in a fire.
It is an object of the present invention to provide a ladder-equipped fire engine display device which can be quickly and accurately performed in a case where the ladder is used, and can realize a significant improvement in operability and safety.

[0011]

As a technical means for achieving the above object, the present invention provides a method for displaying various kinds of information including a posture state of a ladder attached to a fire engine. A first ladder for digitally displaying a target position mark indicating a position of a target object based on distance measurement data from a distance measuring device for measuring a distance, the work height of the ladder , a horizontal use range, and a maximum use limit position thereof. A point is displayed in the posture display to indicate the working height of the ladder , the horizontal use range and the positional relationship of the target position mark with respect to the maximum use limit position , and the maximum and minimum turning ranges of the ladder are displayed.
Digital display of the second ladder posture display based on the range finder
It can be switched to the distance measurement display that digitally displays the distance measurement data
And a graphic display.

[0012]

[0013]

[Action] In the display device of the present invention, in the graphic display, the target position mark indicating the position of the target object based on the distance data from the range finder to measure the distance to the target object, the ladder of the working height A point is displayed in the first ladder posture display which digitally displays the horizontal use range and its maximum use limit position, and the work height of the ladder and the horizontal use range are displayed.
Indicating the positional relationship of the target position mark with respect to the enclosure and its maximum use limit position , and the maximum and minimum rotation of the ladder.
The second ladder posture display that digitally displays the rotation range
Distance display and digital display of distance measurement data based on
It is possible to change the position of the ladder and the distance measurement data directly . <br/> In case of emergency such as fire
Quick and accurate response to can be realized. Also, the first
2nd ladder posture switchable to ranging display and ladder posture display
Since the display is added, various information can be obtained from these displays.
And accurate operation can be easily performed.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a display device for a ladder-equipped fire engine according to the present invention will be described with reference to FIGS.

A feature of the present invention is that, as shown in FIG. 1, a target position mark indicating the position of a target object is formed based on distance measurement data from a distance measuring device (11) for measuring a distance to the target object. The work height of the ladder , the horizontal use range, and its maximum use limit position are digitally displayed in the first ladder posture display as a point, and the ladder work height, the horizontal use range, and the target position with respect to the maximum use limit position are displayed. Indicate the positional relationship of the marks, and digitize the maximum and minimum turning ranges of the ladder.
The second ladder posture display to be displayed on the distance measurement device (11)
Range display and digital display of distance measurement data based on switching
The provision of the graphic display (12) that has been made possible.

Hereinafter, the graphic display and its display screen will be described in detail.

First, the graphic display (12) of the present invention comprises EL, liquid crystal or CRT, VFD, etc.
As shown in FIG. 1, a ladder control controller (13) and a distance measuring device (11) are connected, and the ladder control controller (13) is connected.
Is input. In the graphic display (12), screen display and screen switching are performed based on the flowchart shown in the figure.

On the other hand, the graphic display (1
In 2), a screen as shown is normally displayed with the display changeover switch (14) set to the "normal display" side as shown in FIG. That is, on the display screen, the first ladder posture display (15) is displayed on the right side of the screen, and the second ladder posture display (1) is displayed.
6) is placed on the left side of the screen, and an error display (17) (1)
8) is arranged at the upper center of the screen, and the operable direction display (19) is arranged at the lower center of the screen.

In the first ladder posture display (15), the work height and the horizontal use range by the ladder and the basket at the tip thereof are drawn, and the maximum use limit position is displayed at an upper position by an arrow. Is done. In the second ladder posture display (16), the turning range of the ladder and the basket is drawn upward on the lower side, and information such as the standing angle of the ladder is displayed on the upper side. In the figure, the turning range in the second ladder posture display (16) indicates the maximum on the right side and the minimum on the left side. In the abnormal display (17) and (18), various warning contents and the occurrence of abnormalities are selectively displayed for each item, and in the operable direction display (19), arrows indicating the directions in which the ladder and basket can be operated by the operation lever are displayed. Is selectively displayed.

When the display changeover switch (14) is set to the "distance display" side from the normal display, the second ladder posture display (16) at the lower right of the screen is switched to the screen, as shown in FIG. The display shows the distance measurement data (20). In this state,
The linear distance, elevation angle, horizontal distance, and vertical distance to a target object such as a building can be measured.

Then, when the distance measuring switch (21) is turned on with the distance measuring switch set to the "distance measuring" side, a measurement command is sent from the graphic display (12) to the distance measuring device (11), and the distance measuring device (11) transmits the measurement command. The linear distance, elevation angle, horizontal distance, and vertical distance to the target object are measured, and the distance meter (1
The ranging data output from 1) is input to the graphic display (12). As a result, the distance measurement data is additionally displayed in the distance measurement data display (20) as shown in FIG. 4, and the position of the target object based on the distance measurement data is displayed in the first ladder posture display (15). At target position mark (22)
The point is displayed automatically.

By displaying the target position mark (22) on the first ladder posture display (15), the position of the target object can be immediately recognized from the distance measurement data by the distance measuring device (11). The operator operates the operation lever so that the ladder and the basket can quickly reach the target position mark (22).

At this time, in the operable direction display (19), the operable direction of the operation lever, that is, “start”, “down”,
“Left”, “right”, “extend”, “shrink”, “rise”, and “fall” are selectively displayed with arrows. Further, if there is a warning content or occurrence of an abnormality, it is displayed for each item with an abnormality display (17) (18). The figure shows a state where all items are displayed.
If the target object cannot be measured because it is too far away, the distance measurement data display (2
In (0), "-" is displayed. Further, when there is an abnormality in the distance measuring device due to disconnection, poor connection, or the like, "■" is displayed in the distance data display (20) as shown in FIG. Is displayed, and the message of "Ranging device abnormality" blinks.

[0024]

According to the present invention, the graphic display, the target position mark indicating the position of the target object based on the distance data from the range finder to measure the distance to the target object, the ladder of the work A point is displayed in the first ladder posture display which digitally displays the height, the horizontal use range and its maximum use limit position, and the work height of the ladder and the horizontal use range are displayed.
Indicating the positional relationship of the target position mark with respect to the enclosure and its maximum use limit position , and the maximum and minimum rotation of the ladder.
The second ladder posture display that digitally displays the rotation range
Distance display and digital display of distance measurement data based on
Since it is possible to change the position of the ladder, the direct relationship between the attitude of the ladder and the distance measurement data can be obtained. It greatly improves and is very excellent in terms of operability and safety. In addition, it is possible to switch to the first ladder posture display and distance measurement display
Since the new second ladder posture display is added,
Various information can be obtained from the indication, and accurate operation can be easily performed.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a display device of a fire truck with a ladder according to the present invention.

FIG. 2 is a diagram showing a normal display screen in the display device of FIG. 1;

FIG. 3 is a diagram showing a distance display screen switched from the normal display screen of FIG. 2;

FIG. 4 is a diagram showing a state in which a distance measurement result is displayed on the distance display screen of FIG. 3;

5A and 5B show a distance display screen of FIG. 3, wherein FIG. 5A shows a state where distance measurement is impossible, and FIG. 5B is a view showing an abnormal state of the range finder.

FIG. 6 is a schematic configuration diagram showing a conventional example of a display device of a fire truck with a ladder.

[Explanation of symbols]

 11 Distance measuring device 12 Graphic display 15 Ladder posture display 22 Target position mark

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-54-47400 (JP, A) JP-A 55-92352 (JP, U) JP-A 55-103584 (JP, U)

Claims (1)

(57) [Claims] 1. A display for displaying various information including a posture state of a ladder attached to a fire engine, wherein a position of the target object is determined based on distance measurement data from a distance measuring device for measuring a distance to the target object. Showing target position mark on ladder work
A point is displayed in a first ladder posture display which digitally displays a height, a horizontal use range, and a maximum use limit position thereof, and a position of the target position mark with respect to a work height of the ladder , a horizontal use range, and the maximum use limit position. co When you index the relationship
The digital display of the maximum and minimum swing range of the ladder
2 ladder posture display
A display device for a fire engine equipped with a ladder, comprising a graphic display capable of switching between a distance measurement display and a distance display .