JPH09204600A - Vehicle intrusion alarming device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make both driver and operator perform operations for evading danger even when the driver of an approaching vehicle drives while sleeping or looking away or the like and goes over a control line by making the driver and the operator on an operation site instantaneously recognize the fact. SOLUTION: When an intruding vehicle intrudes into a control zone exceeding the control line, since the wheel of the vehicle steps on a hose 1, the rapid pressure change of antifreeze liquid 11 inside the stepped-on hose 1 occurs, it is turned to a pressure wave, is transmitted inside the hose 1 and reaches a pressure switch 12 and a pressure is detected. Then, when the pressure exceeds a prescribed pressure, an alarm is issued to the surroundings by an alarming device 18.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle intrusion alarm device for informing a worker of road construction or a driver of an intruding vehicle that a vehicle has intruded into a regulation line such as a highway.

[0002]

2. Description of the Related Art On the highway currently in use,
When performing road widening work, road surface repair work, or work such as installation or replacement of incidental equipment such as road signs and lighting (hereinafter referred to as road work, etc.), vehicles moving from behind rush into the work site. In order to prevent this, a signboard or color cone, arrow board, revolving light (hereinafter referred to as a sign, etc.)
The traffic lanes are regulated from several hundred meters before the work site (see the traffic regulation map in Fig. 4).

[0003]

However, in the above-mentioned conventional method, even if the approaching vehicle is sufficiently warned by restricting it with a sign or waving a flag by security personnel, If the driver is looking away or driving while taking a nap, he or she may break through the regulation line without noticing the signs or the like and enter the work site. In that case, not only the occupant of the intruding vehicle but also the worker who was working at the work site were involved in the accident, resulting in a catastrophic event.

A summary of this situation is as follows. 1. The driver of the intruding vehicle is not looking ahead. 2. The worker does not look in the direction of the intruding vehicle because he is devoted to the work. 3. If the vehicle speed of the intruding vehicle is high, the work vehicle does not have enough time for the evacuation operation even if it notices the entry.

An object of the present invention is to provide a driver of an approaching vehicle and a worker at a work site even when the driver of the approaching vehicle is falling asleep or looking aside and breaking through the regulation line. In addition, it is an object of the present invention to provide a vehicle intrusion warning device capable of instantaneously recognizing and causing both a driver and a worker to take a risk avoidance operation.

[0006]

In order to solve the above-mentioned problems, the invention of claim 1 is placed along a regulation line which is a boundary of a regulated area on a road, and is flexible in which a liquid is enclosed. It is characterized by including a hose member, pressure detecting means for detecting the pressure in the hose member, and alarm means for generating an alarm when the output of the pressure detecting means exceeds a predetermined pressure.

According to a second aspect of the invention, in the vehicle intrusion warning device according to the first aspect, the liquid sealed in the hose member is an antifreeze liquid.

According to the present invention, when an intruding vehicle crosses the regulation line and enters the regulated area, the tire of the vehicle steps on the hose member, so that the liquid in the trampled hose member is locally abruptly pressed. When a change occurs, the pressure change propagates through the hose member (hereinafter referred to as a pressure wave), the pressure wave reaches the pressure detection means, the pressure is detected, and the pressure exceeds a predetermined pressure. A warning is given to the surroundings by a warning means.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION

(First Embodiment) The present invention will be described in detail below with reference to the drawings and the like. FIG. 1 is a diagram showing a first embodiment of a vehicle intrusion warning device according to the present invention. The hose 1 is a flexible, pressure-resistant, and durable hose. The quick coupler 2-1 is attached to the tip of the hose, and the base side is connected to the hose reel 3. When not in use, this hose is used. It is wound on reel 3. The driving force of the motor 4 is transmitted to the hose reel 3 via the chain 5, and the hose 1 can be mechanically wound up. The length of the hose 1 can be controlled by the hose reel 3, so that the length of the regulation line can be freely set.

An antifreeze liquid 11 described later is enclosed in this hose 1. Since the hose 1 is crushed when stepped on by a tire of an intruding vehicle, a pressure wave is generated in the enclosed antifreeze liquid 11, which causes sonic velocity. It travels through the hose 11. The hose 1 is kept taut by a constant internal pressure and absorbs little pressure waves, so that even if the length of the hose 1 is 400 m, it is possible to detect the intrusion of the vehicle. Further, since the hose 1 is flexible, the regulation line can be freely set to a straight line or a curved line. This is an advantage that is different from a sensor using light or ultrasonic waves.

The hose 1 is a high-pressure nylon hose (for example, inner diameter φ3.8 mm × outer diameter φ8.3 mm, normal pressure 2
00 kg / cm ² or inner diameter φ4.8 mm × outer diameter φ10.
7 mm, normal pressure of about 200 kg / cm ² ) is light and has little elongation, and can be suitably used. In addition, a high-pressure nylon hose with a polyurethane fiber layer (for example, inner diameter φ
(13 mm × outside diameter φ22 mm, working pressure 250 Kg / m ² ) may have less elongation and less pressure wave absorption (damping).

The connection port of this hose reel 3 is connected to a pipe 7 via a swivel joint 6. The pipe 7 is connected to the tank 10 via a check valve 8 and a pump 9. The tank 10 is an open-air tank, and is filled with an antifreeze liquid 11 containing ethylene glycol or the like, for example. The tank 10 is provided with a quick coupler 2-2 connectable to the quick coupler 2-1 provided at the tip of the hose 1.

In this embodiment, the antifreezing liquid 11 in the tank 10 is filled in the hose 1 at a constant pressure. When water is used as the liquid sealed in the hose 1, the propagation velocity (sonic velocity) of the pressure wave in water is 1500 m / sec, which is about 5 times faster than the acoustic velocity in air (330 m / sec).
The reason for using the antifreeze liquid 11 as the liquid is (1)
The antifreeze liquid 11 does not freeze even in winter, (2) it is easily available and inexpensive because it is generally available, and (3) it is harmless if it leaks to the road.

On the other hand, the pipe 7 is provided with a pressure switch 12 and a pressure gauge 13. The pressure switch 12 and the pressure gauge 13 are for detecting and displaying the pressure in the hose 1. The output of the pressure switch 12 is connected to the control unit 14. The control unit 14 is provided with a sensitivity adjusting volume 15, an ammeter 16 and the like, the output of which is supplied via a relay 17.
It is connected to the alarm device 18. The sensitivity adjusting volume 15 is capable of adjusting the sensitivity so that passage of tires of two-wheeled vehicles and small vehicles can be detected.

The alarm device 18 is provided for promptly informing the worker of danger by hearing, sight, etc., and is an electronic siren or electronic alarm (amplifying amplifier, amplifier amp, etc.) used in emergency vehicles such as patrol cars and fire engines. It is preferable to turn on the red rotating lamp and the emergency flashing lamp together with the speaker). As a result of this, it is possible to give the worker time to evacuate.

The control unit 15, the relay 17,
The alarm device 18, etc., includes a battery 2 mounted on the sign vehicle.
0 is connected via a constant voltage device 19. The reason for providing the constant voltage device 19 is to prevent the detection level from varying due to the voltage drop of the battery 20.

Next, the operation of the vehicle intrusion warning device according to this embodiment will be described. The sign vehicle 100 is attached with the device of the present embodiment, and is the starting point A of the regulation line 101.
Stop just before the start of the hose reel 3 and hose 1 to 2-3
Operate only m, and put the tip of the hose 1 near the road shoulder 103. The labeled vehicle 100 advances along the regulation line 101, steers the hose 1, and moves along the regulation line 101.
Place the hose 1 (AE). The marker wheel 100 is stopped inside the restriction area 102 inside the restriction line 101.

Here, while the foot of the hose 1 on the road is stepped on (see FIG. 1), the sensitivity of the pressure switch 12 is adjusted by the sensitivity adjusting volume 15, and the pressure switch 12 is turned on by a slight pressure increase. To do.

When an intruding vehicle crosses the regulation line 101 and enters the regulation area 102, the hose 1 is inevitably trampled by the tire of the vehicle. At this time, the pressure of the antifreeze liquid 11 in the hose 1 that has been stepped on rapidly rises as a pressure wave and propagates in the hose 1 through the hose in the hose reel 3 and the swivel joint 6, and the pressure switch 12
To reach. When the pressure exceeds a predetermined pressure, the pressure switch 12 generates an electric signal, and the electric signal turns on an alarm device 18 such as an electronic siren or an electronic bell, and an alarm is issued to the surroundings. .

When the worker senses an alarm, the worker interrupts the work and evacuates the danger area as quickly as possible. Further, the driver of the intruding vehicle also notices the intrusion with an alarm sound and takes an action for avoiding danger, so that the accident can be minimized.

To release the restriction or move or remove the apparatus of this embodiment, it is sufficient to wind the hose 1 around the hose reel 3.

(Second Embodiment) FIG. 2 is a diagram showing a second embodiment of the vehicle intrusion warning device according to the present invention. In addition, the same reference numerals are given to the portions having the same functions as those in the above-described first embodiment, and the overlapping description will be appropriately omitted. In this embodiment, a closed tank 10-1 is used, and an air tank 23 is connected via a pressure reducing valve 21 and a check valve 22. Air tank 23
Is provided with an air compressor 26 via a primary air governor 24 and a check valve 25.

As the pressure reducing valve 21, a precision pressure reducing valve is used, which is not affected by changes in the primary side air pressure (the pressure inside the air tank 23 of the vehicle: usually 6 to 7 kg / m ² ), and the tank pressure (of the antifreeze liquid 11) The pressure) can be maintained at a setting of about 5 Kg / cm ^{2 with} an accuracy of about ± 0.2%. .

Further, in this embodiment, the pressure switch 1
2-1 is a pressure-current proportional type for both gas and liquid. As shown in FIG. 3 (A), the pressure switch 12-1 has the following _equation : P ₀ = secondary set pressure of the air pressure reducing valve 21, and P ₁ = instantaneous pressure (peak pressure) when the tire passes. ΔP = increase in instantaneous pressure.

In the case of this pressure switch 12-1, as shown in FIG. 3B, if I ₀ = current value at set pressure P ₁ and I ₁ = peak current value due to P ₁ , ΔI = Increase in peak current.

A sensitivity adjusting volume 15 for adjusting ΔI for turning on the load side switch (relay) is provided in comparison with the current I ₀ by the constant voltage device 19, and the sensitivity is adjusted by the length of the hose 1 and the ambient temperature. The sensitivity can be adjusted according to the site. In the case of this embodiment, as the pressure switch 12-1, an ON-O for gas is used.
It is also possible to use an FF type micro switch. Further, the sensitivity adjusting volume 15 is the pressure switch 1
Depending on the two types, a sensitivity adjusting screw or the like can be used.

Here, the evacuation time of the alarm device will be described with reference to FIG. Will be described. Vehicle 11
It is assumed that 0 enters the point C at a speed Vs = 100 Km / h (vs = 28 m / s) and rushes to the point A, which is the work place. At this time, the time ts for the vehicle 110 to reach the point A is ts = 350/28 = 12.5 [sec]. On the other hand, the time tk at which the alarm sound reaches the point A is: underwater sound speed vw = 1500 m / sec air sound speed va = 330 m / sec Device operation delay Δt1 = about 1.0 sec Perceptual (reaction) delay Δt2 = about 0.5 sec Then, tk = L2 / vw + L1 / va + Δt1 + Δt2 = 300/1500 + 50/330 + 1.0 + 0.5 = 1.85 [sec]. Therefore, the save time t0 is t0 = ts-tk = 12.5-1.85 = 10.65 [sec]. Therefore, if this alarm device is used, it takes about 10 seconds.
It turns out that it is enough to evacuate.

The present invention is not limited to the above-described embodiments, but various modifications and changes can be made, which are also within the scope of the present invention. For example, a large amount of hollow plastic balls and the like may be mixed in the hose together with the antifreeze liquid, and when the tire is stepped on, the balls may be destroyed to generate a shock wave.

The vehicle intrusion warning device of the present invention is preferably mounted on a sign car. The reason for this is that it is easy to move, lay, and remove this device, and it is difficult for a passing vehicle to recognize that this device is installed, so it is necessary to display the regulation line with a sign or the like. There are certain things. In practice, in most cases, a sign car is placed behind the work place instead of the barricade so that it can be recognized even from a considerable distance. Therefore, it is convenient to install this device on a sign car because the laying position and the position of the sign car match.

However, since the sign vehicle is used as a substitute for a barricade and an intruding vehicle may collide with it, and this device may be destroyed, a hall reel, pressure detecting means,
A main part such as an alarm device may be unitized, moved by casters, and retracted to the road shoulder.

Finally, the excellent features of the present invention are summarized as follows. 1. Not only visual alarms, but also audible alarms can be generated. 2. It is possible to reliably detect a vehicle trying to break the regulation before the regulation line. 3. The time lag from breaking the regulation to issuing an alarm can be minimized. 4. It does not work if the worker walks over the regulation line. 5. It cannot prevent a vehicle that normally passes outside the regulation line. 6. Easy to install, move, and remove. 7. It is not affected by the weather (temperature, rain, wind, sunshine, etc.).

[0032]

As described above in detail, according to the present invention, the liquid in the hose member stepped on the invading vehicle becomes a pressure wave and propagates in the hose member, and a predetermined pressure is applied by the pressure detecting means. When it is detected that the vehicle has been crossed, an alarm is issued to the surroundings by the alarm means, so the driver of the intruding vehicle and the worker at the work site instantly recognize the intrusion of the vehicle into the restricted area and drive. There is an effect that both the worker and the worker can take a risk avoidance action.

[Brief description of drawings]

FIG. 1 is a diagram showing a first embodiment of a vehicle intrusion warning device according to the present invention.

FIG. 2 is a diagram showing a second embodiment of the vehicle intrusion warning device according to the present invention.

FIG. 3 is a diagram illustrating a pressure switch of a vehicle intrusion alarm device according to a second embodiment.

FIG. 4 is a travel regulation diagram using an embodiment of the vehicle intrusion warning device according to the present invention.

FIG. 5 is a diagram illustrating the evacuation time of the vehicle intrusion warning device according to the present embodiment.

[Explanation of symbols]

 1 Hose 2 Quick Coupler 3 Hose Reel 4 Motor 5 Chain 6 Swivel Joint 7 Piping 8 Check Valve 9 Pump 10 Tank 11 Antifreeze 12 Pressure Switch 13 Pressure Gauge 14 Control Unit 15 Sensitivity Adjustment Volume 16 Ammeter 17 Relay 18 Alarm Device 19 Constant Voltage 19 apparatus

Claims (2)

[Claims] 1. A flexible hose member, which is placed along a restriction line serving as a boundary of a restricted area on a road and in which a liquid is sealed, and pressure detection means for detecting a pressure in the hose member, When the output of the pressure detection means exceeds a predetermined pressure,
A vehicle intrusion alarm device including alarm means for generating an alarm. 2. The vehicle intrusion alarm device according to claim 1, wherein the liquid sealed in the hose member is an antifreeze liquid.