JPH067471A - Display device for fire truck with ladder - Google Patents

Abstract

PURPOSE:To sharply improve the operability and safety be quickly and accurately controlling a ladder based on the range data by a range finder. CONSTITUTION:A fire truck displaying various information including the posture state of a ladder fitted to it is provided with a graphic display 12 point- displaying a target position mark 22 indicating the position of a target object based on the range data from a range finder measuring the distance to the target object in the first ladder posture display 15 digitally displaying the posture state of the ladder.

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 with a ladder, and more particularly to a display device for a fire engine with a ladder for displaying various information including the posture state of a ladder attached to the fire engine.

[0002]

2. Description of the Related Art Generally, a fire engine with a ladder reliably exhibits its original function of quick and accurate rescue in the event of a building fire. Therefore, from the viewpoint of operability and safety, A display device for displaying various information including the posture state is provided.

A conventional example of the display device of this fire engine with a ladder will be described with reference to FIG.

As shown in the figure, the display device is divided into a ladder posture display section (1) and a distance measurement data display section (2).

The ladder posture display section (1) is an area (3) showing an operable range of the ladder, specifically, a working height by a basket provided at the tip of the ladder, a horizontal use range and a turning range. In the area (3), a pointer (4) imitating a ladder is mounted rotatably around a fulcrum (5). In addition, the guideline (4)
The tip of the ladder, that is, an index (6) indicating the position of the basket is attached so as to be movable along the pointer (4). The pointer (4) and the index (6) are set so as to be mechanically operated by a link mechanism (not shown) incorporated in the apparatus body.

On the other hand, the distance measurement data display unit (2) measures the distance to a target object such as a building with a laser beam by the distance measurement device (7) installed in a fire engine, and the distance measurement device is used. Distance measurement data such as distance and angle output from (7)
Display by segment display, etc.

In the display device having the above-mentioned configuration, the operator can determine the distance and angle to the target object on the basis of the distance measurement data obtained by the distance measuring device (7) in the distance measurement data display section (2). Recognize visually. Based on this, 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 pointer (4) and the index (6) becomes the distance and angle to the target object. Will be operated.

[0008]

By the way, in the above-mentioned conventional display device, although the ladder posture display section (1) and the distance measurement data display section (2) are arranged in parallel, one of the ladder postures is displayed. While the display unit (1) has a structure that operates mechanically with a link mechanism, the other distance measurement data display unit (2) is based on the measurement signal output from the range finder (7). It has a structure for displaying the distance measurement data. As a result, the ladder posture display section (1) and the distance measurement data display section (2)
Means that they are simply combined with each other, and the displayed contents of both 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 the 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). The ladder and basket cannot be operated by the operating lever unless the position of the object is confirmed. As a result, there is a problem in that quick and accurate correspondence is extremely difficult, workability is significantly reduced, and operability and safety are obviously inferior.

Therefore, the present invention has been proposed in view of the above problems, and an object of the present invention is to quickly and accurately control a ladder based on distance measurement data by a distance measuring device.
An object of the present invention is to provide a display device for a fire engine with a ladder, which can realize a significant improvement in operability and safety.

[0011]

As a technical means for achieving the above object, the present invention is to display various information including the posture state of a ladder attached to a fire engine, up to a target object. It is equipped with a graphic display that displays a target position mark indicating the position of the target object based on the distance measurement data from the distance measuring device that measures the distance in the ladder posture display that digitally displays the posture state of the ladder. Characterize.

Further, in the graphic display, it is desirable to be able to switch the screen between a ladder posture display for digitally displaying the posture state of the ladder and a distance measurement display for digitally displaying the ranging data based on the rangefinder.

[0013]

In the display device of the present invention, the target position mark indicating the position of the target object is displayed on the graphic display on the basis of the distance measurement data from the range finder for measuring the distance to the target object. Since the points are displayed in the ladder posture display that digitally displays, it is not necessary to replace the distance measurement data with the ladder posture display, and the position of the target object is automatically displayed in the ladder posture display. In addition, it becomes possible to realize an appropriate response.

[0014]

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

The feature of the present invention is that, as shown in FIG. 1, a target position mark indicating the position of the target object is set based on the distance measurement data from the distance measuring device (11) for measuring the distance to the target object. It is equipped with a graphic display (12) that displays points in the ladder posture display that digitally displays the posture state of the ladder.

The graphic display and its display screen will be described in detail below.

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 range finder (11) are connected, and the ladder control controller (13) is connected.
The ladder attitude data output from is input. On this 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), normally, the screen as shown is 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
6) is placed on the left side of the screen, and the error display (17) (1
8) is located above the center of the screen, and the operable direction display (19) is located below the center of the screen.

Here, in the first ladder attitude display (15), the working height and horizontal use range of the ladder and the basket at the tip of the ladder are drawn, and the maximum use limit position is displayed at the upper position with an arrow. To be done. In the second ladder posture display (16), the turning range of the ladder and 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 on the second ladder posture display (16) is maximum on the right side and minimum on the left side. In addition, in the anomaly display (17) (18), various warning contents and anomaly occurrence are selectively displayed for each item, and in the operable direction display (19), arrows indicating directions in which the ladder and the basket can be operated by the operation lever are displayed. Is displayed selectively.

When the display changeover switch (14) is set to the "distance display" side from the normal display, the second ladder posture display (16) located on the lower right side of the screen is changed over to the screen as shown in FIG. Distance measurement data display (20) is displayed. In this state,
It is possible to measure the linear distance, elevation angle, horizontal distance, and vertical distance to a target object such as a building.

Therefore, when the distance measuring switch (21) is turned to the "distance measuring" side and turned on, a measurement command is sent from the graphic display (12) to the distance measuring device (11), and the distance measuring device (11) causes the above-mentioned The linear distance, elevation angle, horizontal distance and vertical distance to the target object are measured, and the distance measuring device (1
The distance measurement data output from 1) is input to the graphic display (12). As a result, as shown in FIG. 4, the distance measurement data is displayed additionally on the distance measurement data display (20), and the position of the target object based on the distance measurement data is displayed in the first ladder posture display (15). Target position mark on (22)
Is automatically displayed as points.

By displaying the target position mark (22) on the first ladder attitude 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 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, "up" and "down" are displayed.
“Left”, “right”, “stretch”, “shrink”, “ascend”, and “descend” are selectively displayed as arrows. Further, if there is a warning content or an abnormal occurrence, it is displayed for each item by the abnormal display (17) (18). The figure shows a state in which 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, and if there is an abnormality in the distance measuring device due to disconnection, connection failure, etc., the distance measuring data display (20) displays "■" as shown in Fig. 5 (b). Is displayed, and the message “rangefinder error” blinks.

[0024]

According to the present invention, in the graphic display, the target position mark indicating the position of the target object is displayed on the basis of the distance measurement data from the range finder for measuring the distance to the target object. Since the points are displayed in the ladder attitude display that digitally displays the state, it is not necessary to replace the distance measurement data with the ladder attitude display, and the position of the target object is automatically displayed in the ladder attitude display. Since the ladder posture display and the distance measurement data are directly related to each other, quick and accurate correspondence can be realized, workability is significantly improved, and operability and safety are extremely excellent.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a display device for 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.

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

FIG. 4 is a diagram showing a state in which distance measurement results are displayed on the distance display screen of FIG.

5A and 5B show the distance display screen of FIG. 3, where FIG. 5A shows a state in which distance measurement is impossible, and FIG. 5B shows an abnormal state of the rangefinder.

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

[Explanation of symbols]

 11 Rangefinder 12 Graphic display 15 Ladder posture display 22 Target position mark

Claims (2)

[Claims] 1. A device for displaying various information including a posture state of a ladder attached to a fire engine, wherein the position of the target object is based on distance measurement data from a distance measuring device that measures the distance to the target object. A display device for a fire engine with a ladder, comprising a graphic display for displaying a target position mark indicating the point on the ladder posture display that digitally displays the posture state of the ladder. 2. The graphic display according to claim 1, wherein the screen can be switched between a ladder attitude display that digitally displays the attitude state of the ladder and a distance measurement display that digitally displays distance measurement data based on a rangefinder. Display device for fire trucks with a ladder.