KR101674443B1 - Safety system of crosswalk for pedestrian protection - Google Patents

Abstract

The present invention relates to a safety system in a crosswalk to protect a pedestrian, which recognizes a signal state of a crosswalk and detects an approach of a pedestrian, so as to determine whether the pedestrian jaywalks or not by crossing at a red light to warn, thereby inducing the pedestrian to safely wait for a signal.

Description

TECHNICAL FIELD [0001] The present invention relates to a pedestrian safety system for protecting a pedestrian,

The present invention relates to a pedestrian safety system. More particularly, the present invention relates to a pedestrian safety system that recognizes a signal state of a pedestrian crossing and detects a pedestrian's approach to determine whether a pedestrian crossing is caused by a signal violation, To a pedestrian safety system.

A pedestrian traffic light is installed on a pedestrian crossing for the purpose of crossing a lane. At this time, the pedestrian signal interlocks with the vehicle signal, inducing the vehicle to stop through the red vehicle signal, and allowing the pedestrian to traverse safely.

Such a crosswalk is a relatively large area where there is a high possibility of an accident between a pedestrian and a vehicle due to a signal violation of a vehicle or a pedestrian or a decrease in the discrimination of a pedestrian, and a personal injury such as a pedestrian .

Particularly when the pedestrian signal is red and the pedestrian waits in the pedestrian crossing for a longer period of time, or when the pedestrian signal is green, the pedestrian tries to cross the remaining pedestrian green time, or the elderly, Accidents often occur when the pedestrian signal of the pedestrian signal is not illuminated for a sufficient amount of time depending on the slow walking speed.

In addition, as the number of traffic accidents increases year by year due to the illegal parked vehicles in the places where the children are concentrated, such as around the school, the small children are not identified or the children suddenly jump into the roads. And to prevent physical accidents.

However, since the conventional accident prevention means has no interruption force and is passive, it is not effective to substantially reduce the traffic accident rate. In the case of frequent passage of the children, There are traditionally used methods of guiding safety, but they have a problem of consuming manpower and exercising power only in certain time periods.

Korean Registered Patent No. 10-0773146 (Announced on October 29, 2007.)

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide a pedestrian- And to provide a pedestrian safety system for protection.

In addition, the present invention not only provides an acoustic warning message but also a visual warning through the emission of the laser and the sidewalk block, facilitates identification of the pedestrian of the driver of the vehicle, and facilitates identification of the pedestrian through the light- A pedestrian safety system for pedestrian protection which can easily confirm accessibility.

In order to achieve the above-mentioned object, the present invention provides a pedestrian crossing safety system for outputting a warning signal to a pedestrian when a pedestrian crossing is detected through a columnar body provided at both ends of a pedestrian entering side of a pedestrian crossing, Sensing unit; A pedestrian sensing unit provided on the body and including a plurality of sensing sensors for sensing a pedestrian approach of a pedestrian; A judging unit for judging an endless crossing situation according to the detection result of the signal detecting unit and the pedestrian sensing unit; An acoustic output unit installed on the body and outputting a warning sound to the pedestrian; A control unit for operating the sound output unit according to the endless crossing determination of the determination unit; .

A rough image sensing unit installed on the body and sensing the brightness of the surroundings; A laser output unit for emitting a laser beam having a pattern set in a selected direction; And the controller may be configured to operate the laser output unit according to the determination result of the determination unit and the detection result of the roughness detection unit.

A sidewalk block unit having a pressure sensor unit for detecting a load from a pedestrian located on the upper side and a first light emitting unit including a plurality of light emitting devices; Wherein the sidewalk block portion includes a first connector portion for coupling with another sidewall adjacent block portion and a first connector portion for signal transmission and power supply, And to operate the first light emitting unit in a pattern set according to the detection result of the pressure sensor unit.

A boundary block unit having a proximity sensor unit for sensing a vehicle on a road side and a second light emitting unit comprising a light emitting device; And a second connector portion for signal transmission and power supply is formed in the boundary block portion, and a second connector portion for signal transmission and power supply is formed in the boundary block portion, And to operate the second light emitting unit in a pattern set according to the detection result of the proximity sensor unit.

According to the present invention, it is possible to give a pedestrian a sense of alert by accurately determining whether or not a pedestrian crosses the road in an unauthorized trajectory and output a warning message. In particular, in addition to warning of a sidewalk block, It is possible to increase the identification rate of the pedestrian of the driver of the vehicle, thereby greatly contributing to the accident prevention.

In addition, it is possible to easily prevent the pedestrian from approaching the vehicle in a situation in which the roadside view is not smoothly secured through the light emission of the boundary block due to the detection of approaching the vehicle to the crosswalk, thereby preventing an accident caused by unauthorized crossing.

1 is a conceptual diagram of the present invention,
2 is a block diagram illustrating a configuration and a connection relationship according to a preferred embodiment of the present invention.
3 is a partial perspective view of a body according to a preferred embodiment of the present invention,
4 is a block diagram illustrating a configuration and a connection relationship according to another embodiment of the present invention.
5 is a partial perspective view showing a state of a sidewalk block according to another embodiment of the present invention,
6 is a partial perspective view illustrating a boundary block according to another embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the construction of a pedestrian crossing safety system for protecting pedestrians according to the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 is a conceptual view of the present invention. The present invention is basically implemented through a column-shaped body 100 installed at both ends of a pedestrian crossing, that is, a side where the pedestrian enters the roadway from the sidewalk, The pedestrian crossing due to the violation will be detected.

FIG. 2 is a block diagram illustrating a configuration and a connection relationship according to a preferred embodiment of the present invention. FIG. 3 is a partial perspective view illustrating a body according to a preferred embodiment of the present invention. In a preferred embodiment of the present invention, A control unit 150, a roughness-sensing unit 160, and a laser output unit 170. The control unit 150 controls the operation of the laser output unit 170, .

The signal sensing unit 110 is configured to detect a signal state of a traffic light, that is, a vehicle traffic signal or a pedestrian signal. The signal sensing unit 110 interlocks with a vehicle signal light or a pedestrian signal light installed on a pedestrian crossing to grasp the current signal state in real time.

For this purpose, the signal sensing unit 110 may be installed near a pedestrian crossing to receive a control signal directly connected to a control panel for controlling a traffic light. However, if the situation is not clear, It is also possible to configure the sensor to detect the signal status. In this case, the present invention has a purpose of substantially protecting a pedestrian, and the signal sensing unit 110 is installed in a traffic light for a pedestrian rather than a traffic light for a vehicle for ease of installation, The signal detecting unit 110 may be configured to detect a green signal of a pedestrian signal light by installing a sensor for detecting whether the pedestrian signal lamp is illuminated in front of the green lamp in consideration of the fact that the traveling time is shorter than the signal desirable.

The signal sensing unit 110 may be controlled so as to be optimized for the environment of the installation site in consideration of the fact that the lighting time of the green signal varies depending on the environment of the signal light such as the length of the installed pedestrian crossing, Is installed on both the green signal and the red signal side so as to simultaneously detect the two signals, and a timer and a memory are provided so that the lighting time of the green signal and the red signal is stored for learning. This enables the signal state acquired by other methods in a situation where there is a possibility of erroneous detection such as a green signal, a red signal, a lamp failure of the signal lamp by using one or all of the three signal state detection methods of learning and stored lighting time in the memory Malfunction can be prevented.

The pedestrian sensing unit 120 is provided in the body 100 to detect pedestrian approaching of the pedestrian. In the related art technique for generating an alarm in the unauthorized traverse of a pedestrian, after the pedestrian is very close to the roadway or after the transgression of the signal violation occurs, an alarm is generated to delay the alarm occurrence point. Even if the alarm is recognized, And the possibility of a collision due to a vehicle approaching quickly is high.

In the present invention, the pedestrian sensing unit 120 may detect a pedestrian approaching motion, i.e., a motion of a pedestrian, so that the pedestrian sensing unit 120 may determine that the pedestrian approaches the roadway before crossing the signal offsets, And a detection sensor 121.

The sensing sensor 121 uses a sensor using a Doppler effect, which is represented by a microwave motion sensor or an ultrasonic sensor. The sensing sensor 121 may be mounted on the body at two different angles Or more.

In addition, a module for transmitting an RFID signal to an accessory such as a cane, a necklace, a bracelet or the like possessed by a visually impaired person is provided in advance, and the sensing sensor 121 recognizes the RFID signal from the module, And can be configured to be separately detected.

The determination unit 130 is configured to determine an unauthorized crossing state through the detection result of the signal sensing unit 110 and the pedestrian sensing unit 120. Basically, the signal sensing unit 110 receives a pedestrian waiting signal The pedestrian sensing unit 120 determines the movement of the pedestrian attempting to cross the vehicle while the pedestrian signal is red.

That is, it is judged that the movement of the pedestrian to the pedestrian crossing side is to be excluded, but the movement of the pedestrian without the crossing intention is excluded. For this purpose, the pedestrian sensing part 120 is provided with a plurality of The intensity of the signal measured from the sensor 121 of the sensor 121 is measured and compared to compare the difference according to the change of the offset level. If a difference of more than the set comparison value is detected, it can be determined that the unauthorized traverse has occurred.

Alternatively, the signal pattern change value of the sensing sensor 121 obtained in various experiments may be stored in advance according to the size of the body 100 and the width of the crosswalk, and the signal of the sensing sensor 121 obtained in real time may be stored It is possible to judge that it is an unauthorized crossing situation when the change value of the signal is compared with the pattern change value and there is a match of a predetermined ratio or more.

With this function, the judging unit 130 can judge whether the pedestrian is approaching the pedestrian crossing from the pedestrian waiting signal or the pedestrian entering the pedestrian crossing.

The sound output unit 140 is a speaker that is installed in the body and outputs an acoustic signal, and outputs a warning sound to the pedestrian. In this case, the warning sound output may be a simple tone of high-pitched sound or a warning message stored in advance. In conjunction with the detection result of the determination unit 130, a pedestrian waiting signal of the pedestrian approaching to the pedestrian crossing, So that differentiated sound output can be performed.

In addition, as mentioned above, in a state where a module for sending an RFID signal to an accessory such as a cane, a necklace, a bracelet or the like possessed by a visually impaired person is provided in advance, the sensing sensor 121 recognizes the RFID signal from the module, , It is preferable that the visually impaired person and the surrounding person perceive the situation more easily than the simple warning sound, and that a message for guiding the surrounding people to actively assist the visually impaired person is separately output.

The present invention basically alerts the pedestrian by warning about the endless crossing through the acoustic signal. However, in a situation where the pedestrian is neglected, the visual signal is outputted in order to protect the pedestrian secondarily, and at the same time, So that the laser can be utilized.

For this purpose, the rough image sensing unit 160 is installed on the body 100 to sense the brightness of the surroundings. A warning using a laser is one that senses the brightness of the laser which can be selectively used in the rain or during the nighttime because the effect can hardly be expected in the daytime when the sunlight is strong.

Also, since it is common that the driver's pedestrian discrimination power is significantly lowered in a dark environment than in a bright environment, the probability of accidents due to unauthorized traversal increases, so that it is possible to easily identify pedestrians who try to cross without a laser, .

In the present invention, the laser output unit 170 includes a laser oscillating unit 171, a direction switching unit 172, a filter (not shown) (173), and a filter switching unit (174).

The laser oscillating unit 171 is implemented using a conventional laser oscillating means for generating a laser beam. The laser oscillating unit 171 includes a direction switching unit (not shown) configured to be driven by a driving unit so as to adjust the emitted laser beam in a vertical direction 172 are formed in the laser oscillating portion 171. [

The filter unit 173 is a filter for converting a laser beam generated through the laser oscillating unit 171 into a specific pattern. The filter unit 173 cuts off a part of the laser beam, passes through an optical medium capable of deforming the shape of the laser beam, To form a beam. For example, in the case of an ordinary laser pointer, the laser beam is formed in a small dot shape, so that in such a shape, the discrimination force is reduced and it is not possible to give a warning to the pedestrian or to allow the driver to identify the pedestrian.

Accordingly, the laser output through the laser oscillating unit 171 may be a line having a certain length or a surface of a certain area rather than a point shape, but a plurality of the laser beams may be formed on the bottom surface of the subject or pedestrian's body A suitable filter portion 173 is provided.

Preferably, the filter unit 173 includes a plurality of filters so that the laser can be emitted in different patterns by dividing the pedestrian waiting signal of the pedestrian waiting signal into the pedestrian crossing approach and the crossing pedestrian entering state, And a filter switching unit 174 for selectively arranging a plurality of filters on the front surface of the laser oscillating unit 171 to change the shape of the laser beam.

The control unit 150 includes a signal sensing unit 110, a pedestrian sensing unit 120 and a determination unit 130. The sensing unit 110, the pedestrian sensing unit 120, and the determination unit 130 are installed in the body 100, And controls the sound output unit 140, the roughness sensing unit 160 and the laser output unit 170 to operate the sound output unit 140 in accordance with the endless crossing of the determination unit 130, The laser output unit 170 is operated in conjunction with the operation of the sound output unit 140 in a situation where brightness set through the rough image sensing unit 160 is sensed.

In particular, as described above, since the laser output unit 170 includes the direction switching unit 172 and the filter switching unit 174, it is possible to control the laser output unit 170 through the control unit 150, The filter switching unit 174 is operated so that the emitted laser beam has a long line shape and the direction switching unit 172 is operated so that the laser beam is formed on the transverse press surface, In a situation where a pedestrian enters the pedestrian's walkway in the pedestrian waiting signal, the laser beam is passed through the filter switching unit 174 and the direction switching unit 172 so as to form a laser beam on the body of the pedestrian in a plurality of lines or planes having a pattern in the longitudinal direction, Can be controlled.

FIG. 4 is a block diagram illustrating a configuration and a connection relationship according to another embodiment of the present invention. In the preferred embodiment of the present invention described above, the configuration of the sidewalk block unit 180 and the boundary block unit 190 is added, Of the present invention.

The sidewalk block 180 includes a plurality of sidewalk blocks separated from the sidewall. In the present invention, the sidewalk block 180 is formed by a sidewalk block formed at the entrance side of the crosswalk and inevitably pressed to cross the crosswalk.

FIG. 5 is a partial perspective view illustrating a sidewalk block according to another embodiment of the present invention. Each sidewalk block 180 includes a pressure sensor 181, a first light emitter 182, The second connector 183 and the first connector 184 are provided.

The pressure sensor unit 181 is configured to detect the presence of a pedestrian by detecting a load from a pedestrian located on the upper side as the pedestrian presses the corresponding sidewalk block in the moving or waiting state. It is possible to use a sensor that can detect only a certain level of pressure, unlike a sensor that is installed on a general electronic scale or the like to accurately determine the position of a pedestrian.

The first light emitting unit 182 includes a plurality of light emitting devices L having low power and high output characteristics such as LEDs. At this time, it is preferable to provide red and blue light emitting devices L, such as the color of a traffic light, rather than dispersing the attention through colorful colors.

The first joint portion 183 is formed on a side surface of each of the sidewalk block portions 180 and is configured to engage with another adjacent sidewalk block portion. In the sidewalk block portion where the concave- The recesses corresponding to the concave and convex portions are respectively formed to form the first engaging portion 183 and the rigid connection to the connecting portion of the sidewalk block portion 180 and the first connector portion 184 to be described later, So as not to be influxed.

The first connector portion 184 is configured to transmit signals necessary for the operation of the pressure sensor portion 181 and the first light emitting portion 182 and to connect cables for power supply. The first connector portion 184 formed on the body 100 is connected to the first connector portion 184 and is connected to the controller 150 built in the body 100 to receive power and signals from the controller 150, So that the pressure sensor unit 181 and the first light emitting unit 182 provided in the display unit 180 are controlled.

At this time, the control unit 150 operates the first light emitting unit 182 in a pattern set according to the determination result of the determination unit 130 and the detection result of the pressure sensor unit 181, It is also possible to judge whether the pedestrian approaches the pedestrian through the detection result of the pressure sensor unit 181 obtained in the step 180. In a specific control method, when the pedestrian signal lamp is red and the pedestrian is located on the sidewalk block, the first light emitting part 182 emits red light, and when the pedestrian signal light becomes a green signal, 182 may emit green light. Or when the pedestrian signal lamp is red in a state in which the first light emitting unit 182 is not emitting light normally and the endless traverse through the determination unit 130 or the pressure sensor unit 181 is detected, It is also possible that the display 182 emits a visual warning effect.

The boundary block 190 is a plurality of boundary blocks installed along the interface between the vehicle and the roadway in order to distinguish the roadway from the roadway. In the present invention, a pedestrian crossing the crosswalk is formed at a certain distance along both ends of the entrance side of the crosswalk. It consists of boundary blocks of identifiable locations.

FIG. 6 is a partial perspective view illustrating a boundary block according to another embodiment of the present invention. The boundary block 190, the second light emitting portion 192, the second coupling portion 193, (194).

The proximity sensor unit 191 is formed on the road side to check the presence or absence of the vehicle as the vehicle moves adjacent to the boundary block unit 190. A sensor of the same type formed in the pedestrian sensing unit 120 mentioned above may be used for literally confirming the movement of the vehicle.

The second light emitting unit 192 may include a plurality of light emitting devices L having low power and high output characteristics such as LEDs and may have a single color or different colors. It is preferable to provide a red light emitting element L.

The second engaging portion 193 is formed on a side surface of each of the boundary block portions 190 and is configured to engage with another adjacent boundary block portion. In a boundary block portion having a concave- The recessed portions corresponding to the concave and convex portions are formed so that rainwater or foreign matter does not flow into the second connector portion 194 which will be described later, in addition to the rigid connection.

The second connector 194 has a structure for connecting a cable for signal transmission and power supply required for the operation of the proximity sensor 191 and the second light emitting unit 192, The second connector 194 formed on the body 100 is extended and connected to the control unit 150 incorporated in the body 100 so that power and signals are transmitted from the controller 150, The proximity sensor unit 191 and the first light emitting unit 182 included in the light source unit 190 are controlled.

At this time, the control unit 150 operates the second light emitting unit 192 according to the determination result of the determination unit 130 and the detection result of the proximity sensor unit 191.

 In a specific control method, the second light emitting unit 192 may be configured to emit red light when the pedestrian signal lamp is red and the vehicle approaches from a distance from the pedestrian crossing. This allows pedestrians to easily check whether another vehicle is approaching even if the vehicle is parked just in front of the pedestrian crossing, thereby reducing the possibility of accident.

It is to be understood that the invention is not limited to the disclosed embodiment, but is capable of many modifications and variations within the scope of the appended claims. It is self-evident.

110: Signal detection unit 120: Pedestrian detection unit
121: Detection sensor 130:
140: Acoustic output unit 150:
160: rough guide portion 170: laser output portion
171: Laser oscillation part 172:
173: Filter section 174: Filter switching section
180: sidewalk block 181: pressure sensor
182: first light emitting portion 183: first coupling portion
184: first connector part 190: boundary block part
191: proximity sensor section 192: second light emitting section
193: second coupling portion 194: second connector portion
L: Light emitting element

Claims (4)

A pedestrian crossing safety system for outputting a warning signal to a pedestrian upon detection of endless crossing through a columnar body (100) provided at both ends of a pedestrian entering side on a pedestrian crossing,
A signal detecting unit 110 for detecting a signal state through a sensor which is installed on a front surface of a signal lamp and storing a lighting time of a green signal and a red signal by detecting a signal state with a timer and a memory;
A pedestrian sensing unit 120 comprising two or more detection sensors 121 installed at different angles on the body 100 so as to sense a pedestrian approaching pedestrian through a Doppler effect;
A determination unit (130) for determining a movement of the pedestrian to endlessly traverse according to the detection result of the signal sensing unit (110) and the pedestrian sensing unit (120);
An acoustic output unit 140 installed in the body 100 and outputting a warning sound to the pedestrian;
A rough image sensing unit 160 installed on the body 100 for sensing the brightness of the surroundings;
A laser oscillating unit 171 having a direction switching unit 172 formed by a driving means so as to adjust the angle of the emitted laser beam in the up and down direction and the left and right direction and a laser beam generating unit 171 A filter unit 173 composed of a plurality of filters and a filter switching unit 174 for selectively arranging the plurality of filters on the front surface of the laser oscillating unit 171 to change the shape of the laser beam, A laser output portion 170 for emitting a laser of a pattern set toward the bottom surface of the body of the crosswalk or the body of the crosswalk;
A first light emitting portion 182 formed of a plurality of light emitting devices L and a first light emitting portion 182 formed of a plurality of light emitting devices L for detecting a load from a pedestrian located on the upper side, A plurality of sidewall block portions 180 having an engaging portion 183 and a first connector portion 184 for signal transmission and power supply and formed at the entry-side delivery of the crosswalk;
A proximity sensor 191 for detecting a vehicle on the road side, a second light emitting unit 192 composed of a light emitting device L and a second engaging unit 193 for engaging the other boundary block adjacent to the side, A plurality of boundary block portions 190 having a second connector portion 194 for signal transmission and power supply and installed along the interface between the vehicle and the roadway;
The laser output unit 140 is operated according to the endless crossing determination of the determination unit 130 and the laser output unit 140 is operated according to the detection result of the roughness detection unit 160, The first light emitting portion 182 is arranged in a pattern set according to the detection result of the pressure sensor portion 181 and the second light emitting portion 182 is arranged in a pattern set in accordance with the detection result of the proximity sensor portion 191, A control unit 150 for operating the control unit 192; And a pedestrian safety system for pedestrian protection. delete delete delete

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