JPH0726522A - Detecting and warning device for excessive height over limitation - Google Patents

Abstract

PURPOSE:To inform a passing body its excessive height over limitation on the point on this side of a limitation place when the limitation place exists on a passage, regardless of weather and without causing damage, facilitate a detour measure, and prevent inrush of it to the limitation place. CONSTITUTION:On a position on this side of a limitation place 1, a curtain of soft material having display of a limitation which is hung as a detecting part 3 displaying the clearance at its lower side, and excessive height over limitation detecting means due to an ultrasonic distance sensor not influenced from weather are provided. A display means by which excessive height over the limitation is visually warned and displayed at receiving an excess detected signal from the excessive height over limitation detecting means as a warning part 4 is provided on the limitation place, and existence of the limitation place is informed on this side of it capable of detour measure. When a passing body exceeding the limitation passes under the curtain, the excessive height is informed without damage due to contact with the lower side, in addition, an excessive height detected signal is sent from the excessive height over limitation detecting means to the display device of the warning part 4 so as to display excessive height over limitation, and inrush to the limitation place is prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a car ferry, a garage,
If there is a height limit for passing vehicles such as tunnels, bridges, and railroad crossings, or if there is a height limit for people passing at construction sites, etc. The present invention relates to a device that performs detection and alarm generation.

[0002]

2. Description of the Related Art For example, at entrances and exits of bridges, railroad crossings, car ferries, etc.
Since there is a risk of mutual damage or deformation of these related structures due to contact, collision, etc., it is necessary to prevent these vehicles from entering in advance. In addition, it is necessary to prevent humans from hitting their heads, etc. against structures with a low height at construction sites and injuring them in advance.

Specifically, in the case of a railroad crossing, as shown in FIG. 6, a steel vehicle height limiting gate 41 is installed in front of the breaker 42 to prevent entry and prevent accidents such as disconnection of the overhead wire 43. ing. Further, in the case of a bridge such as a railway bridge or an overpass, as shown in FIG. 5, a vehicle height limiting gate 41 is installed in front of the bridge 44 to prevent entry.

Furthermore, because of the locational conditions such as the coastal quay in car ferries, the above-mentioned protective structure is not provided.
It was left to the driver's voluntary judgment. Similarly, in the low-height structures at the construction site, it was left to the attention of passers-by, except for warning signs and protection by wearing a helmet.

In the above cases, if the vehicle comes into contact with the vehicle height limiting gate 41, the cargo or the vehicle itself may be damaged, and the overhead line 43, the tunnel and the bridge 44 may be damaged. If a person's head comes into contact with a low structure or the like, there is a risk that the head may be impacted or the neck may be damaged even when wearing a helmet.

Further, in the case of the driver's voluntary judgment, there was a misunderstanding or misunderstanding, and it was not possible to completely prevent the judgment error. As a countermeasure for this, a vehicle height measuring device as shown in Fig. 4 has been devised.
63-79511).

This device is provided with an approach path 21 which continues to the entrance and exit of the vehicle.
A gate structure 22 made of steel, wood, reinforced synthetic resin, or the like is erected in the vicinity of the vehicle entrance / exit of the vehicle so as to straddle the approach road 21 at a height equal to or higher than the restricted vehicle height.
Further, a light projector 25 is arranged in the vertical direction, and a light receiver 26 is arranged on the other column 24 in the same height range as the light projector 25.

The light projector 25 is adapted to irradiate the light receiver 26 with parallel light from a laser light source, or with an ordinary light source converted into parallel light with an optical lens. A large number of photosensitive sensors 27 such as transistors are arranged at intervals of several cm (for example, 2 cm).
The number of the photosensitive sensors 27 can be freely increased or decreased according to the vehicle height. A vehicle 28 is provided to the left and right of the light projector 25 and the light receiver 26.
A light-shielding plate having an appropriate size, for example, a width of 1.0 m and a height of 1.5 m is attached so that the light reflected by the headlight or the vehicle body does not enter the light receiver 26.

The projector 25 is connected to the indicator 31 by a multi-core cable 30, and the light receiver 26 is a photosensitive sensor 2.
With the same number of multi-core cables 32 as the number of 7
Connected to. The indicator 31 is provided with a display unit 33 for indicating the vehicle height digitally or by a lamp according to the number of light beams received by the light projector 26 which are blocked from being received by the light receiver 26. Is connected to a bell or buzzer 34 that operates when the vehicle height exceeds a limit vehicle height, and a speaker 35 for issuing a voice warning of the tape is connected.

With the above construction, the light beam 36 projected from the indicator 31 through the light projector 25 is not exposed by the vehicle 28.
Is received and all circuits are on, but the gate structure 2
When the vehicle 28 loaded with the cargo 37 enters the inside of the vehicle 2, the photosensitive sensor 2 of the light receiver 26 is detected by the vehicle 28 or the cargo 37.
7 is shielded from below, the circuit of the shielded photosensitive sensor 27 is turned off, this is detected by the indicator 31, and the vehicle height is digitally displayed on the display unit 33.

Here, if the limit vehicle height is set in advance in the indicator 31, the bell or the buzzer 34 gives an alarm to the vehicle exceeding the limit vehicle height, and informs the driver of the attention. If necessary, a voice warning of the tape can be issued via the speaker 35.

However, also in this device, there is a possibility that a vehicle whose height exceeds the limit will come into contact with the gate structure 22. In that case, as in the case of the vehicle height limiting gate 41 shown in FIGS.
The vehicle or the gate structure 22 is damaged. On the contrary, if the height of the gate structure 22 is increased so as not to make contact with the gate structure 22, the attention-giving force of the height restriction decreases.

Since the projector and the receiver are used,
In the case of rain, fog, snow, etc., the light-receiving surface and the light-projecting surface are likely to be affected by the weather such as water droplets and snow adhering to the light-shielding surface and malfunctioning. Further, since this device is provided at a close distance to the height-restricted location, even if the user is aware of the excess of the limit, it is difficult to avoid traffic due to backward movement when there is a following vehicle.

[0014]

As described above, in the conventional height-restriction warning device, a vehicle exceeding the limit height comes into contact with the vehicle and the vehicle height-restriction gate or the vehicle itself is damaged, or the weather condition occurs. However, there are problems such as being difficult to avoid even if you notice that the height limit is exceeded because of the installation position and the installation position.

In view of the above-mentioned problems of the conventional device, an object of the present invention is to prevent a breakage or damage even if the height exceeds the limit at a point before the height limiting point and the contact is made. In order to draw attention to the fact that there is a height restriction point in front, making it easy to bypass when there is an excess, and in case of passing without noticing the limit, in a way that does not depend on the weather Detects whether the height of the passing body exceeds the limit, and if it exceeds the limit, displays that fact at the height-limited location to prevent entry into the restricted location. -To provide an alarm device.

[0016]

The present invention has the following means constitution in order to achieve the above object. That is, the height limit excess detection / warning device of the present invention is such that the height limit is displayed and the lower side becomes the limit height at the position above the passage at a predetermined point before the position where there is a height limit when passing. A hanging curtain made of a flexible material; whether or not the height of the passing body exceeds the limit height when the passing body passes under the hanging curtain from above the passing body using an ultrasonic distance sensor Limit height excess detection means for detecting; provided at a portion having the height limit, and when a signal indicating the limit height excess is received from the limit height excess detection means, a visual alarm display indicating that the limit height excess is made A height limit excess detection / warning device, comprising: a display device;

[0017]

The operation of the apparatus of the present invention having the above-mentioned means will be described below. In the device of the present invention, at a point before the height-restricted portion, there is a height-restricted portion in the front, and the hanging curtain made of a flexible material is displayed so that the lower side portion is just the limited height. It is suspended above the passage. This allows the passing object to know that there is a height-restricted portion in the front, and whether or not the height exceeds the limit height depending on whether or not it touches the curtain when passing under the curtain. If the height is exceeded, detour measures can be taken before reaching the height restriction point. This is because the banner is provided at a position before the height-restricted part. In this case, since the curtain is made of a flexible material, neither the curtain nor the passing body will be damaged or damaged even if they come into contact with each other.

When passing under the curtain, the ultrasonic distance sensor detects from above whether the height of the passing body exceeds the limit height, and when it exceeds the limit height, it exceeds the limit height. A signal indicating that the limit height is exceeded is sent to the display device provided at the height limit location, and a visual alarm is displayed to indicate that the limit height is exceeded, so when the passing object passes under the curtain, the limit height is exceeded. Even if the user goes to a place with a height limit without noticing that, it is possible to know that the limit is exceeded, and it is possible to avoid contact with the limit structure and damage or damage.

The height detection by the ultrasonic distance sensor has an advantage that it is less affected by the weather such as rain, fog, and snow as compared with the case of projecting and receiving light rays of the conventional device. Further, the visual alarm display has an advantage that there is no such obstacle as compared with the case where the acoustic alarm may be difficult to be recognized because it is overwhelmed by ambient noise or noise.

[0020]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic view of an embodiment of the installation position of the device of the present invention, in which a detection unit 3 of the device is placed several tens of meters ahead of a passageway 2 approaching the height-restricted portion 1 on the vehicle passage side. , Place the alarm unit 4 of this device on the position of the height limit of the height limit place. If the detour is near the restricted height location, the detection unit 3 is installed immediately before or after the detour if possible. A vehicle that has noticed that the height limit has been exceeded due to the warning of the banner of the detection unit 3 can smoothly take evasive action, and can not block the passage for avoidance by the followers, There is no stopping the flow of.

FIG. 2 is an enlarged view of the detection unit 3 of the present apparatus shown in FIG. A pillar 5 made of steel, wood, reinforced synthetic resin, etc. which is vertically stood on the left side in the direction of travel of the passage, and an end is fixed in the middle of the pillar 5, and from the tip of the pillar 5 is made of a sturdy rope such as steel. A frame is composed of the fixed horizontal supporting members 6 of the same material, and a height limiting display screen 7 made of a hanging material made of a flexible material such as hard rubber is hung on the horizontal supporting members 6. In the portion 6 there is a structure in which five ultrasonic distance sensors 8 are arranged diagonally downward.

The width of the horizontal support member 6 and the height limiting display screen 7 is the width of the passage, and the lower side of the height limiting display screen 7 is the restricted height. The ultrasonic distance sensors 8 are arranged in a number enough to cover the entire width of the passage so that the range that can be captured by one sensor is appropriately overlapped. The numerical value entered in the figure is an example when the height limit of the passage that passes under the track girder is 3.5 m, and the height of the lower side of the height limit display screen 7 is 3.5 m and the vertical direction. The length is about 1.0 m, and the horizontal support member 6 that suspends it is 5.0 m (buildings on the road are regulated to be 5.0 m or more, and there is no possibility that vehicles longer than that will pass through. ).

FIG. 3 shows an alarm unit 4 of the present apparatus shown in FIG.
Is an example of the case where the height limit of the passage passing under the track girder is 3.5 m. The detection unit 3 and the alarm unit 4 of this device are connected by wire or wirelessly, and if the over-height vehicle does not stop due to the attention of the height limit display screen 7 at the detection unit, the The information detected by the acoustic wave distance sensor 8 is transmitted to the alarm unit 4.

In this case, the emergency stop lamp 10 (red) of the alarm unit 4 blinks, and at the same time, the LED (red) display 11 warns that the height is exceeded. Further, the height limit display screen 7 of the detection unit 3 and the height limit display 9 of the alarm unit 4 are basically the same to make it easy for passersby to understand.
The effect of calling attention and warning of the alarm unit 4 will be enhanced.

[0025]

As described above, the height limit excess detection / warning device of the present invention is a limit device which is hung so that the lower side has a limit height at a position before the height limit position. A hanging curtain made of flexible material with a high indication and a limit height excess detection means by an ultrasonic distance sensor are installed, and when the height detection location receives a excess detection signal from the limit height excess detection means, a visual warning is displayed for the limit height excess. Since a display device is installed, first of all, for the passing body that is over the limit by the display of the banner, it can be reminded that there is a height restriction point in front of the height restriction point, and a detour measure can be taken. Can be urged. Also, if you pass under the curtain without noticing it, you can know that the limit is exceeded because it contacts the lower side of the curtain. Here, since the banner is made of a flexible material, neither of them is damaged or damaged. Then, at that time, there is an advantage that it is easy to take a detour measure because the position is before the height-restricted portion.

Further, even if the user goes ahead without noticing the contact with the hanging screen, the over-limit height detecting means detects the over-limit, and the display device at the height-restricted portion indicates that the over-limit is exceeded, so the height is limited. It is possible to prevent rushing into places. The high limit detection means uses an ultrasonic distance sensor, which has the advantage that it is not affected by the weather such as snow, fog, rain, etc. compared to the one using conventional light rays, and a visually appealing alarm display. However, unlike an acoustic alarm, there is an advantage that it is not disturbed by noise and that the alarm can be recognized even when a window of a vehicle or the like is closed.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of a height limit excess detection / warning device of the present invention.

FIG. 2 is a diagram showing details of a specific example of a detection unit 3 in FIG.

3 is a diagram showing details of a specific example of an alarm unit 4 in FIG.

FIG. 4 is a diagram showing a specific example of the configuration of a conventional vehicle height measuring device.

FIG. 5 is a diagram showing an example of a vehicle height limiting gate in a conventional bridge.

FIG. 6 is a diagram showing an example of a conventional vehicle height limiting gate at a railroad crossing.

[Explanation of symbols]

 1 Height Restricted Point 2 Passage 3 Detection Section 4 Alarm Section 5 Support 6 Horizontal Support 7 Height Limit Display Screen 8 Ultrasonic Distance Sensor 9 Height Limit Display 10 Emergency Stop Light 11 LED Display

Claims (1)

[Claims] 1. A hanging curtain made of a flexible material, which is hung so that a height limit is displayed and a lower side becomes a limited height at a position above a passage at a predetermined point before a position where the height is limited when passing through. A limit height excess detection means for detecting whether or not the height of the passing body exceeds the limit height when the passing body passes under the hanging curtain from above the passing body using an ultrasonic distance sensor; It is installed in a place with height restrictions,
A height limit excess detection / warning device comprising: a display device for visually displaying a warning that the limit height is exceeded when a signal indicating the limit height excess is received from the limit height excess detection means. .