JPH09204587A - Collision prevention device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely prevent the sudden collisions of persons at the path corners in a building by detecting the persons near the corners of every path and warning the possibility of collisions of persons if decided. SOLUTION: This device includes a detection means 11 and 12 which detect the persons who passing through the corners of every path, and a warning means 13 which warns the possibility of sudden collisions of persons occurring at the path corners. Furthermore, a control mans 14 is added to decide the possibility of collisions based on the signals sent from both means 11 and 12 and instructs the means 13 to produce warnings. Thus the sudden collisions of persons can be surely prevented at the path corners in a building. As a result, no injury is caused by the collisions of persons and even the aged or physically handicapped persons can safely walk over the paths of the buildings, underpasses, etc.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a collision avoidance device, and more particularly, to a collision avoidance device for avoiding a collision when there is a possibility of collision between humans and humans at a corner of a passage in a building. It is related to the device.

[0002]

2. Description of the Related Art Humans have a mysterious tendency to walk inside near a corner of a passage in a building. Therefore, when walking while looking away or thinking, people often encounter other pedestrians and collide with their heads. It becomes a safety issue because it becomes or becomes a collision. In particular, if you are running in a hurry or have both hands in your pocket, it is very dangerous because you can not take action to avoid a collision, and if you are carrying a drink such as coffee or tea, you should avoid a collision. If you try to avoid it, you will spill it, and not only yourself, but the other party's clothes and the floor.

[0003] In the past, most of the time, this kind of problem has been dealt with by raising awareness of safety through awareness activities and raising the safety awareness of each individual. In addition, although it is rarely practiced in a building, a reflection mirror is attached to a ceiling or a wall.

[0004]

However, the fact is that such a countermeasure does not always solve the problem. That is, in the enlightenment method, only the awareness of the individual's safety is a reliance, and the effect is naturally limited. Also, the method using a reflection mirror,
Depending on the location, the installation itself may be difficult due to various circumstances, and even if the reflection mirror is installed, it is completely useless if you do not notice the reflection mirror while walking while looking away and thinking.

An object of the present invention is to provide a collision avoidance device capable of reliably preventing humans from encountering each other and colliding with each other at a turning angle in a passage in a building.

[0006]

In order to achieve the above object, the collision avoidance device of the present invention has a detection means for detecting a person near a turn for each passage, and a possibility that the person and the person may collide with each other at the head. There is a notice means for warning that there is a situation, and a control means for judging whether there is a possibility of collision from the signal of the detection means and for making the notice means warn that there is a possibility of collision.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a collision avoidance device of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the collision avoidance device 10 warns that the detection means 11 and 12 for detecting a passerby near a corner for each passage and a passerby may collide with each other at the head. Advance notice means 13 and detection means 11,
The control unit 14 determines whether there is a possibility of collision from the signal of 12 and makes the warning unit 13 give a warning when there is a possibility of collision.

The detection means 11 and 12 are arranged in the main body of the apparatus with their detection directions forming an angle of 90 °. Each of the detection means 11 and 12 has two detection systems A and B.
Is provided. The detection areas of the detection systems A and B are shifted. As shown by the broken line in FIG. 2, the detection area of the detection system A is slightly shifted in the moving direction of the passerby from the detection system B shown by the solid line. For example, they are displaced by about 30 cm, and the control means 14 can determine whether or not a passerby is approaching by the difference in the detection timing between the detection system A and the detection system B based on this deviation. ing. Further, each detecting means 1
When the collision avoidance apparatus 10 is installed on the ceiling, the reference numerals 1 and 12 are capable of adjusting the detection distance from the corner according to the height of the ceiling. This is done, for example, by supporting each of the detecting means 11 and 12 on a rotary table in the main body of the apparatus and rotating the rotary table together with the detecting means 11 and 12 about a horizontal axis. The detection means themselves are each composed of a pyroelectric infrared sensor, an amplifier, a comparator, etc. Each of the pyroelectric infrared sensors has a Fresnel lens or the like arranged on the detection surface, and the detection visual field angle is set to about 10 °. There is. Further, the control means 14 includes a microcomputer, and holds the signals from the detection means 11 and 12 for a fixed time, for example, 1 second, and outputs signals indicating that both of the signals from the detection means 11 and 12 are approaching. If so, both detection means 11, 1
Check whether there is an overlap in the 2 hold signals,
If there is an overlap, it is determined that the passersby are likely to collide with each other and a signal is output to the warning means 13 to give a warning. And the notice means 13 is the melody I.
C, a speaker, etc. are included, and a melody sound or the like is emitted for a predetermined time, for example, about 2 seconds by a signal from the control means 14 to warn that there is a possibility of encountering a head at a corner. Although not shown, the collision avoidance device 10 also includes power source means for converting the commercial power source into a predetermined power source, and the power is supplied from the commercial power source to the respective means 11 to 14 through the power cord and the power source means.
Is supplied to

As shown in FIG. 3, the collision avoidance device 10 can reliably detect a pedestrian approaching a turning angle at a turning angle where two passages intersect, for example, at a right angle. In such a place, for example, on the ceiling near the inside of the corner, the detecting means 11 is installed so as to detect a passerby in the passage 21 and the detecting means 12 to detect a passerby in the passage 22. When installed, the detection systems A and B of the respective detection means 11 and 12 are adjusted according to the height of the ceiling. When the height of the ceiling is, for example, about 2.5 m, the detection system A of the detection means 11 detects an area of 0.8 to 1.8 m from the turn as shown in FIG. 2, and the detection system B detects 0. It is set to detect an area of 5 to 1.5 m. The detection systems A and B of the detection means 12 are set to be the same.

When the collision avoidance device 10 is activated, the detecting means 11 detects the pedestrian in the one passage 21 and detects the passing means.
Detects each passerby in the other passage 22.
Each of the detection means 11 and 12 is put in a detection standby state unless there is a passerby in both detection areas. However, when a passerby approaching the corner in the passages 21 and 22 approaches the corner, the detecting means 11 and 12 output a signal to the control means 14.

Now, the detecting means 11 and the detecting means 12
However, it is assumed that a passerby is detected before and after. Detection means 1
When the detection systems A and B of No. 1 and the detection systems A and B of the detection means 12 send the detection signals of the passersby to the control means 14, the control means 14 holds each detection signal for a certain time as shown in FIG. For example, the information is held for 1 second and used as information on the human detection state in the passages 21 and 22. And control means 1
Reference numeral 4 denotes a detection signal A ₂₁ from the detection system A of the detection means 11, a detection signal B ₂₁ from the detection system B, a detection signal A ₂₂ from the detection system A of the detection means 12 and a detection signal B from the detection system B.
_{From 22} , first, it is periodically checked whether or not the detection signals are in the order of A ₂₁ , B ₂₁ and whether the detection signals are in the order of A ₂₂ , B ₂₂ respectively. If the detection signals are in the order of A ₂₁ and B ₂₁ , the control means 14 determines that the passerby is approaching the corner in the passage 21, and similarly, the detection signal is A
If _22, in the order of B _22, the control unit 14 determines that passersby to bend the passage 22 is approaching. When it is determined that the detection signals from the detection means 11 and 12 are both approaching, it is checked whether or not the detection signal B ₂₁ and the detection signal B ₂₂ overlap each other. When it is determined that there is a possibility, a signal is output to the notification means 13. The notice means 13 outputs a melody sound by this signal from the control means 14 for a predetermined time, for example, about 2 seconds, and warns a passerby of each of the passages 21 and 22 that there is a possibility of encountering at the corner and colliding with the head. Each passage 2
A pedestrian approaching the turn at 1 and 22 can easily take a collision avoidance action by the melody sound.

The above description has been made on the condition of two passages intersecting at a right angle, but in the case of a corner where more passages such as a T-shaped road and a cross road intersect each other, the collision avoidance device 10 is arranged for every two passages. By doing so, collision avoidance can be performed.

FIG. 5 shows a state of use of the collision avoidance device 10 on a T-shaped road. Two collision avoidance devices 10 are used, each of which is newly designated by the reference numbers 10 ₁ and 10 ₂ .

Of these collision avoidance devices 10 ₁ and 10 ₂ , the collision avoidance device 10 ₁ has a detection means 11 having a passage 121.
To detect a pedestrian in the aisle 122, the detecting means 12 is installed on the ceiling so as to detect a pedestrian in the aisle 122.
A warning is given to passers-by from 21 to the passage 122 and a passer-by from the passage 122 to the passage 121 at the corner formed by the passages 121, 122. Further, the collision avoidance device 10 _2, the detection means 11 detects a passerby in passage 123, the detection unit 12 is installed at ceiling to detect respectively a passerby in passage 121,
Passenger and passage 121 from passage 123 to passage 121
From the passageway 123,121
It warns these passers-by of the potential for collisions at the turns formed by.

FIG. 6 shows the installed state of the collision avoidance device 10 on a crossroads. In this case, four collision avoidance devices are used, each having a new reference numeral 10 ₁ to 10 _4.
Indicated by

The collision avoidance apparatus 10 _1, passers detection means 11 in the passageway 221, the detection means 12 is passageway 222
Are installed on the ceiling so as to detect passers-by in the passage, and passers-by and passages 2 heading from passage 221 to passage 222.
Passengers heading from 22 to the passage 221 are the passages 221,
These passers are warned of the potential for collisions at the turns formed by 22. Further, the collision avoidance device 10 _2, the detection means 11 is passageway 223
The passers in the passages 221 are installed on the ceiling so that the detecting means 12 detects the passers in the passages 221 respectively. If there is a possibility of collision at the corner formed by
Warning these passersby. Further, the collision avoidance device ₁₀₃ has a passerby detection means 11 in the passageway 224, the detection unit 12 is installed on the ceiling so as to respectively detect passersby in passage 223, and passersby directed from passage 224 to passage 223 Passage 223 to passage 22
The passers are warned that they may collide with the pedestrians heading for 4 at the turns formed by the passages 224, 223. Then, the collision avoidance device ₁₀₄ has a passerby detection means 11 in the passageway 222, the detection unit 12 is installed on the ceiling so as to respectively detect passersby definitive passage 224, the passage from the passage 222 2
The warnings are given to passers-by-24 and passers-by-passages 224 may collide at the turns formed by the passages 222, 224.

In the collision avoidance device 10 described above, the notice means 13 is provided with a circuit for adjusting the volume of the melody sound to further improve the usability for the user.
Regarding the sound, the melody IC (integrated circuit) may be changed to a voice IC, and for example, a person's voice message may be used to call attention clearly, or a bird's cry may be pronounced to create an atmosphere of the installation environment. You may make it match with.

[0019]

As described above, the collision avoidance device of the present invention can reliably prevent humans from hitting each other at the turning angle of a passage in a building and colliding with their heads. Not only ordinary people but also elderly people and people with physical disabilities can safely pass through the passages inside buildings such as buildings and underpasses.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a configuration of an embodiment of a collision avoidance device of the present invention.

FIG. 2 is an explanatory diagram showing a detection state of a detection unit.

FIG. 3 is an explanatory diagram showing an installed state.

FIG. 4 is a chart diagram for explaining the logic of the moving direction determination and the collision possibility determination in the control means.

FIG. 5 is an explanatory diagram showing an installation state in a T-shaped road.

FIG. 6 is an explanatory diagram showing an installation state at a crossroads.

[Explanation of symbols]

11, 12 ... Detecting means, 13 ... Notice means, 14 ... Control means, 21, 22, 121-123, 221-224 ... Passages.

Claims (1)

[Claims] 1. A detection means for detecting a person near a turn for each passage, a warning means for warning that a person and a person may collide with each other and collide with their heads, and a collision signal from a signal of the detection means. A collision avoidance device comprising: a control unit that determines the presence / absence and causes a notification unit to warn that when there is a possibility of a collision.