KR102237969B1 - Pedestrian feedback system including bollard for making safety distance between vehicle and pedestrian - Google Patents

Abstract

The present invention relates to a pedestrian traffic safety system having a bollard for securing a safety distance between a vehicle and a pedestrian. The traffic accident prevention system includes a light source unit that irradiates light near a floor surface on which a crosswalk is drawn, a communication unit that receives traffic signal information, and an animation pattern that induces right walking based on the received traffic signal information. And a control unit for controlling the light source unit to be irradiated on a surface.

Description

Pedestrian feedback system including bollard for making safety distance between vehicle and pedestrian}

The present invention relates to a pedestrian traffic safety system having a bollard performing various operations for securing a safety distance between a vehicle and a pedestrian.

In order to prevent crosswalk traffic accidents that increase year by year, a bollard is generally installed on both sidewalks of a crosswalk. Recently, in order to lower the crosswalk traffic accident rate, the bollard is equipped with various functions to inform the danger of traffic accidents.

For example, the bollard may be equipped with a pedestrian detection function that detects a pedestrian entering a pedestrian crossing. Such a pedestrian detection function is interlocked with a pedestrian traffic light, and when a red signal prohibiting walking is turned on, a guide broadcast for retreating from the pedestrian crossing may be provided to a user adjacent to the pedestrian crossing.

However, such a pedestrian detection function has a problem that it is still difficult to effectively prevent the occurrence of traffic accidents by providing only simple announcements to pedestrians.

In addition, in recent years, the number of pedestrians crossing the crosswalk while using a wireless terminal such as a smartphone is increasing.As a result, we focus on the use of smartphones and walk on the crosswalk according to the movement of people around without checking the pedestrian traffic lights. As a result, the number of cases of safety accidents is increasing. Accordingly, a new term called smombie, which refers to people who do not take their eyes off their smartphones, has also emerged.

Such Smombie pedestrians tend to walk without checking their surroundings by turning their gaze immediately with their smartphone even if they walk while checking the green light of the pedestrian traffic light.Therefore, there is also a case in which pedestrians are injured by vehicles that cannot confirm the signal. Is increasing.

Therefore, there is a need for development of a pedestrian traffic safety system to reduce traffic accidents occurring near crosswalks.

An object of the present invention is to provide a pedestrian traffic safety system that induces pedestrians to walk on the right side in order to secure a sufficient safety distance between pedestrians crossing a pedestrian crossing and a vehicle.

Another object of the present invention is to provide a pedestrian traffic safety system that provides notifications to pedestrians near a pedestrian crossing in various ways about a vehicle turning right on an intersection.

In addition, another object of the present invention is to provide a pedestrian traffic safety system that calculates the approach speed and braking distance of a vehicle turning right, and provides a notification on the risk of occurrence of a traffic accident based on this.

Another object of the present invention is to provide a pedestrian traffic safety system displaying a turning radius guide pattern for guiding a vehicle turning right at an intersection in order to secure a sufficient safety distance between a pedestrian crossing a pedestrian crossing and a vehicle. will be.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention that are not mentioned can be understood by the following description, and will be more clearly understood by examples of the present invention. In addition, it will be easily understood that the objects and advantages of the present invention can be realized by the means shown in the claims and combinations thereof.

One aspect of the pedestrian traffic safety system according to an embodiment of the present invention is a traffic accident prevention system including a bollard installed adjacent to a crosswalk, wherein light is irradiated near the floor surface on which the crosswalk is drawn. And a light source unit, a communication unit for receiving traffic signal information, and a control unit for controlling the light source unit to irradiate an animation pattern guiding right walking on the floor based on the received traffic signal information.

In addition, the light source unit, when a signal of a pedestrian traffic light included in the traffic signal information is a stop signal, irradiates an animation pattern on the floor surface to induce a pedestrian to move in one direction of the crosswalk stop line, and When the signal is a walking signal, an animation pattern that induces a pedestrian to traverse along one side area of the crosswalk may be irradiated on the floor surface.

In addition, the communication unit receives speed data and position data for the approaching vehicle, and the control unit operates a light source unit or a speaker unit provided in the bollard when the speed of the approaching vehicle is greater than a predetermined speed, or It is possible to generate a notification signal that displays a notification on the screen of a user terminal located near the Bollard.

In addition, the communication unit further receives environmental sensing data including air temperature, humidity, air pressure, and road surface temperature, and the braking distance calculation unit calculates the degree of freezing of the road surface based on the environment sensing data, and The braking distance may be calculated based on the freezing degree and the speed data and the position data.

In addition, when the braking distance is greater than the distance between the approaching vehicle and the crosswalk, the control unit operates a light source unit or a speaker unit provided in the bollard, or generates a notification signal for displaying a notification on the screen of the user terminal. Can occur.

In addition, the control unit calculates a braking distance based on the speed data and the position data, and when the braking distance is greater than the distance between the approaching vehicle and the pedestrian crossing, the intensity of the light source is increased or the light source The display pattern of can be changed.

Another aspect of the pedestrian traffic safety system according to an embodiment of the present invention is a traffic accident prevention system including a bollard installed adjacent to a corner of an intersection, the light source unit irradiating light to the floor surface near the intersection, access And a communication unit for receiving data on a vehicle, and a control unit for controlling the light source unit to irradiate a moving path on the intersection with respect to the approach vehicle to the floor surface based on the received data.

In addition, the control unit may control the light source unit so that the movement path maintains a predetermined rotation radius.

In addition, the communication unit receives speed data, position data, and direction indicator data for the approaching vehicle,

The control unit may control the light source unit to irradiate the moving path when the approaching vehicle turns right based on the received data.

In addition, when the speed of the approaching vehicle is greater than a predetermined speed, the control unit may operate a light source unit or a speaker unit provided in the bollard, or generate a notification signal displaying a notification on the screen of a user terminal located near the bollard. I can.

Specific details of other embodiments of the present invention are included in the detailed description and the accompanying drawings.

The pedestrian traffic safety system according to the present invention can reduce the incidence of traffic accidents occurring at the crosswalk by inducing pedestrians crossing the crosswalk to walk to the right to secure a sufficient safety distance between the pedestrian and the vehicle.

In addition, the pedestrian traffic safety system according to the present invention provides a notification for a right-turning vehicle approaching the blind spot of pedestrians waiting to cross a crosswalk, and by providing a notification for a vehicle approaching at a certain speed or higher, It can reduce the incidence of traffic accidents on the sidewalk and ensure the safety of pedestrians.

In addition, the pedestrian traffic safety system according to the present invention provides a turning radius guide pattern for vehicles turning right at an intersection, thereby securing a sufficient safety distance between pedestrians and vehicles, thereby preventing traffic accidents occurring between pedestrians and vehicles. have.

In addition to the above-described contents, specific effects of the present invention will be described together while describing specific details for carrying out the present invention.

1 is a schematic diagram of a pedestrian traffic safety system according to an embodiment of the present invention.
FIG. 2 is a block diagram showing components of the bollard of FIG. 1.
3 is a flowchart illustrating a method of operating a pedestrian traffic safety system according to an embodiment of the present invention.
4 is a view showing a pedestrian traffic safety system installed near the crosswalk of the present invention.
5 and 6 are diagrams for explaining an example of an operation of a pedestrian traffic safety system according to traffic signal information.
7 is a view for explaining some examples of the operation of the pedestrian traffic safety system inducing walking on the right.
8 is a view for explaining another example of the operation of the pedestrian traffic safety system according to the traffic signal information.
9 is a flowchart illustrating a method of operating a pedestrian traffic safety system according to another embodiment of the present invention.
10 is a flowchart illustrating a method for providing a notification to neighboring users.
11 is a flowchart illustrating a method of operating a pedestrian traffic safety system according to another embodiment of the present invention.
12 is a flowchart illustrating a method for calculating an accident risk level for step S320 of FIG. 11.
13 and 14 are views for explaining some examples of the operation of the pedestrian traffic safety system notifying the user of the danger of a traffic accident.
15 is a flowchart illustrating a method of operating a pedestrian traffic safety system according to another embodiment of the present invention.
16 is a diagram illustrating an example of an operation of a pedestrian traffic safety system in which a moving path of a right-turning vehicle is displayed at an intersection.

Advantages and features of the present invention, and a method of achieving them will become apparent with reference to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various forms different from each other, and only these embodiments make the disclosure of the present invention complete, and common knowledge in the technical field to which the present invention pertains. It is provided to completely inform the scope of the invention to the possessor, and the invention is only defined by the scope of the claims. The same reference numerals refer to the same elements throughout the specification.

The terms used in the present specification are for describing exemplary embodiments and are not intended to limit the present invention. In this specification, the singular form also includes the plural form unless specifically stated in the phrase. As used herein, "comprises" and/or "comprising" refers to the presence of one or more other components, steps, actions and/or elements in which the recited component, step, operation and/or element is Or does not preclude additions.

Unless otherwise defined, all terms (including technical and scientific terms) used in the present specification may be used with meanings that can be commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, terms defined in a commonly used dictionary are not interpreted ideally or excessively unless explicitly defined specifically.

In general, a bollard refers to a pile-shaped structure installed to tie large ships to a pier. However, in modern times, the concept of a structure to protect pedestrians from automobiles has been added to the bollard.

This specification will be described on the premise that the Bollard is a structure erected on the boundary of a roadway and a sidewalk to prevent automobiles from entering the sidewalk.

Recently, the Bollard includes several additional functions to protect pedestrians. It relates to a pedestrian traffic safety system including such a bollard of the present invention.

Hereinafter, with reference to FIGS. 1 to 16, a pedestrian traffic safety system and an operation method thereof according to some embodiments of the present invention will be described in detail.

1 is a schematic diagram of a pedestrian traffic safety system according to an embodiment of the present invention.

Referring to FIG. 1, a pedestrian traffic safety system according to an embodiment of the present invention includes a bollard 100, a user terminal 200, a sensor box 300, and a signal device 400.

The bollard 100 may be installed adjacent to the crosswalk. In addition, the bollard 100 may be installed at both ends of the crosswalk to protect pedestrians near the crosswalk.

The bollard 100 may guide the danger of a traffic accident to pedestrians in various ways. To this end, the bollard 100 can exchange data through communication with the sensor box 300 and the signal device 400 installed near the crosswalk, and transmit a notification signal to the user terminal 200 located near the crosswalk. I can.

At this time, the bollard 100 may investigate an animation pattern guiding a pedestrian to the right side of a crosswalk on the floor in order to secure a safe distance between the vehicle and the pedestrian.

In addition, the bollard 100 may provide a notification for a right-turning vehicle approaching a pedestrian crossing to a pedestrian. At this time, the bollard 100 may determine the risk of a traffic accident of the approaching vehicle by calculating the approach speed of the vehicle approaching the crosswalk and the braking distance of the vehicle, and provide a notification about this to the pedestrian.

In addition, the bollard 100 may irradiate the floor surface with a rotation radius pattern guiding the vehicle to rotate in a predetermined course in order to secure a safe distance between the vehicle and the pedestrian.

To this end, the bollard 100 may receive information on an approaching vehicle from the sensor box 300.

Specifically, the bollard 100 may receive speed and position data of an approaching vehicle from the sensor box 300. In addition, the bollard 100 may receive environment sensing data from the sensor box 300. Here, the environmental sensing data may include air temperature, humidity, air pressure, and road surface temperature measured by the sensor box 300.

Subsequently, the bollard 100 may calculate a braking distance of the approaching vehicle based on the speed and position data of the approaching vehicle received from the sensor box 300. If the calculated braking distance is greater than the distance between the approaching vehicle and the pedestrian crossing, the bollard 100 may provide a notification about the danger situation to the pedestrian near the pedestrian crossing. As a method of providing notification of the bollard 100, there may be transmitting a notification signal to the user terminal 200 possessed by light, sound, or a pedestrian.

Additionally, even when the speed of the approaching vehicle is greater than the reference speed, the bollard 100 may provide a notification about a dangerous situation to pedestrians near the crosswalk.

The user terminal 200 may detect the notification signal transmitted from the bollard 100. When the notification signal is detected, the user terminal 200 may display a warning screen on the screen or may switch the screen to a lock screen. However, this is only an example, and the user terminal 200 may provide notifications in various forms through which the user can recognize a dangerous situation.

Here, the user terminal 200 may be a mobile communication device such as a mobile phone, or a laptop, a personal computer (PC), a personal digital assistant (PDA), a handheld PC (HPC), and a web pad. , Tablet PC, etc. It can be a variety of types of information terminal having a communication port. The user terminal 200 can access the Internet or a network using a communication port. However, the present invention is not limited thereto, and a person of ordinary skill in the art to which the present invention pertains can easily implement the present invention through other types of mobile communication devices and information terminals only by describing the present invention.

The sensor box 300 measures the speed and position of a vehicle approaching a crosswalk. Additionally, the sensor box 300 may measure environmental sensing data. For example, the sensor box 300 may measure air temperature, humidity, air pressure, road surface temperature, and speed and position of a vehicle.

In addition, the sensor box 300 may transmit speed and position data of the vehicle to the bollard 100. In addition, the sensor box 300 may transmit environmental sensing data to the bollard 100.

The signal device 400 transmits traffic signal information to the bollard 100. The signal device 400 may be connected to the bollard 100 by wire or wirelessly. Here, the traffic signal information may include a signal for a pedestrian traffic light or a vehicle traffic light. The bollard 100 may perform different operations according to the type of signal included in the traffic signal information.

Hereinafter, the components of the bollard 100 included in the pedestrian traffic safety system will be described in detail.

FIG. 2 is a block diagram showing components of the bollard of FIG. 1.

Referring to FIG. 2, the bollard 100 includes a communication unit 110, a braking distance calculation unit 120, a notification unit 130, a sensor unit 150, a control unit 160, and a memory unit 170. In this case, the notification unit 130 may include a light source unit 131, a speaker unit 133, and a notification signal generator 135.

The communication unit 110 performs data communication with the sensor box 300 and the signal device 400. The communication unit 110 may receive environment sensing data including speed and location data of the approaching vehicle measured by the sensor box 300 and temperature, temperature, humidity, and the like.

In this case, the communication unit 110 may perform data communication using a wireless communication network based on various communication protocols. For example, the communication unit 110 may perform communication based on an open Internet or a wireless Internet communication network interlocked with a mobile communication network. However, the present invention is not limited thereto.

The braking distance calculation unit 120 calculates a braking distance of a vehicle approaching the crosswalk based on the speed and position data received from the sensor box 300. In addition, the braking distance calculation unit 120 may calculate a braking distance of a vehicle approaching a crosswalk by additionally considering the environmental sensing data received from the sensor box 300.

Subsequently, the braking distance calculation unit 120 may transmit the calculated braking distance to the control unit 160.

The notification unit 130 provides a notification on a dangerous situation to the user.

Specifically, the notification unit 130 may include a light source unit 131, a speaker unit 133, and a notification signal generator 135.

The light source unit 131 includes various components that irradiate light. For example, the light source unit 131 may emit a visible light source, or may emit infrared or ultraviolet light.

The light source unit 131 may irradiate light of various colors, patterns, and intensities. For example, the light source unit 131 may irradiate green or red light according to the color of the pedestrian traffic light. In addition, the light source unit 131 may increase the intensity of light or change a display pattern when there is a vehicle approaching a crosswalk.

The speaker unit 133 may output a sound guiding the user with information on the type of walking signal and dangerous situations.

For example, when a signal such as a walking signal is a stop signal, the speaker unit 133 may generate a voice message stating'Do not cross the crosswalk'. In addition, if it is judged that the risk of an accident is high due to a car approaching a pedestrian crossing,'The car is approaching. You can output a voice message such as'Be careful.'

Here, the speaker unit 133 may output a warning notification sound such as an electronic sound in place of the voice message. However, the above-described matters are only one embodiment, and the sound output from the speaker unit 133 The message or warning sound can be variously modified and output.

The notification signal generator 135 may generate a notification signal for displaying a warning on the screen of the user terminal 200. The notification signal generated by the notification signal generator 135 may be propagated within a certain range. The notification signal generated by the notification signal generator 135 may be transmitted to the user terminal 200.

When the size of the received notification signal is larger than the reference size, the user terminal 200 may display a warning on the screen of the user terminal 200 or may switch the screen to a locked state.

The sensor unit 150 may detect a pedestrian within a certain distance from the bollard 100 or a pedestrian passing through a crosswalk. At this time, the sensor unit 150 may detect pedestrians in various ways.

The controller 160 may control the operation of the notification unit 130 based on data received from the sensor box 300 and the signal device 400.

Specifically, when a pedestrian is detected near a pedestrian crossing, the controller 160 may control the operation of the notification unit 130 to induce the pedestrian to walk to the right.

For example, the light source unit 131 may be controlled so that an animation pattern guiding a pedestrian to the right of a crosswalk is irradiated on the floor surface. In addition, the controller 160 may control the speaker unit 133 to output a voice message inducing a pedestrian to the right of the crosswalk. In addition, the controller 160 may control the notification signal generator 135 to output a notification signal for displaying a notification screen inducing a pedestrian to the right side of the crosswalk on the user terminal 200. However, this is only an example, and the controller 160 may induce a pedestrian to walk on the right in various ways.

In addition, when the signal of a pedestrian traffic light included in the received traffic signal information is a stop signal (for example, red), the control unit 160 generates an animation pattern that induces the pedestrian to move in one direction of the crosswalk stop line. It is possible to control the light source unit 131 to irradiate it.

In addition, when the signal of the pedestrian traffic light is a walking signal (for example, green), the control unit 160 is a light source unit 131 to irradiate an animation pattern that induces a pedestrian to traverse along one side area of the crosswalk. Can be controlled.

In addition, the controller 160 operates the light source unit 131 or the speaker unit 133 when the received speed of the approaching vehicle is greater than a predetermined speed, or the screen of the user terminal 200 located near the bollard 100 The notification signal generator 135 may be controlled so that a notification signal displaying a notification is generated.

In addition, the controller 160 may calculate the braking distance of the vehicle approaching the crosswalk. When the calculated braking distance is greater than the distance between the vehicle and the pedestrian crossing, the control unit 160 operates the light source unit 131 or the speaker unit 133, or the screen of the user terminal 200 located near the bollard 100 The notification signal generator 135 may be controlled so that a notification signal displaying a notification is generated.

In another embodiment of the present invention, when there is a right-turning vehicle approaching a crosswalk, the control unit 160 may provide a notification about the right-turning vehicle to the pedestrian. At this time, the control unit 160 operates the light source unit 131 or the speaker unit 133 as described above, or generates a notification signal displaying a warning notification on the screen of the user terminal 200 located near the bollard 100 The notification signal generator 135 may be controlled so as to be possible.

In addition, in another embodiment of the present invention, when there is a right-turning vehicle approaching a crosswalk, the control unit 160 may control the light source 131 to irradiate a movement path of the right-turning vehicle on the floor surface. Here, the movement path may be formed to maintain a predetermined rotation radius, and may be expressed through various animation patterns.

The memory unit 170 stores the data generated by the bollard 100 and the data received from the outside so as not to be lost. For example, in a process in which the communication unit 110 transmits the speed and position data of the vehicle to the braking distance calculation unit 120, the memory unit 170 may store the corresponding data so that the data is not lost due to a short circuit or the like. .

In addition, the memory unit 170 may store animation patterns displayed by the light source unit 131 and the speaker unit 133. However, the above-described matters are only an example, and the present invention is not limited thereto.

Hereinafter, a method of operating a pedestrian traffic safety system according to some embodiments of the present invention will be described in detail.

3 is a flowchart illustrating a method of operating a pedestrian traffic safety system according to an embodiment of the present invention.

Referring to Figure 3, in the operation method of the pedestrian traffic safety system according to an embodiment of the present invention, the communication unit 110 receives traffic signal information from the signal device 400 (S110).

Subsequently, the control unit 160 determines whether a signal such as a pedestrian traffic light included in the received traffic signal information is a stop signal (S120). Here, a pedestrian traffic light means a signal for pedestrians installed at a crosswalk, and a stop signal means a crossing prohibition signal expressed in red.

Subsequently, when the signal of the walking traffic light is a stop signal, the control unit 160 controls the light source unit 131 to display the right walking guidance animation on the floor of the sidewalk (S130). However, this is only an example, and the controller 160 may induce a pedestrian to walk on the right in various ways.

For example, the controller 160 may control the speaker unit 133 to output a voice message inducing a pedestrian to the right of the crosswalk. In addition, the controller 160 may control the notification signal generator 135 to output a notification signal for displaying a notification screen inducing a pedestrian to the right side of the crosswalk on the user terminal 200.

On the other hand, when the signal of the pedestrian traffic light is not a stop signal, the control unit 160 determines whether the signal of the pedestrian traffic light included in the received traffic signal information is a walking signal (S140). Here, the stop signal means a crossing permission signal expressed in green.

Subsequently, when the signal of the pedestrian traffic light is a walking signal, the control unit 160 controls the light source unit 131 to display an animation inducing walking to the right area of the crosswalk on the floor of the crosswalk (S150). However, this is only an example, and the controller 160 may induce walking to the right area of the crosswalk in various ways.

4 to 8 are views showing the operation of the pedestrian traffic safety system according to an embodiment of the present invention.

4 is a view showing a pedestrian traffic safety system installed near the crosswalk of the present invention. 5 and 6 are diagrams for explaining an example of an operation of a pedestrian traffic safety system according to traffic signal information.

Here, in FIGS. 4 to 6, a case where a pedestrian traffic safety system is installed on a crosswalk on a straight road will be described as an example.

4, the sensor box 300 receives traffic signal information from the signal device 400 (S11). For example, when the signal device 400 changes a signal from red to green and displays it, the sensor box 300 may receive the changed traffic signal information from the signal device 400. 4 shows that the signal device 400 is a vehicle traffic light for a vehicle, but the signal device 400 also includes a pedestrian traffic light for pedestrians.

Subsequently, the sensor box 300 measures the speed and position of the vehicle approaching the crosswalk (S12). At this time, the sensor box 300 may additionally measure air temperature, humidity, atmospheric pressure, and road surface temperature.

Subsequently, the sensor box 300 transmits the speed data and position data of the approaching vehicle c to the bollard 100 (S13). In this case, the sensor box 300 may additionally transmit environmental sensing data to the bollard 100.

Subsequently, the bollard 100 provides a notification to the user according to whether the speed of the approaching vehicle c is greater than the reference speed (S14). In addition, in another embodiment of the present invention, the bollard 100 may calculate the braking distance of the approaching vehicle c, and provide a notification to the user when the calculated braking distance is greater than the distance between the vehicle and the pedestrian crossing. .

At this time, the bollard 100 operates the light source unit 131 or the speaker unit 133, or a notification signal generator to generate a notification signal displaying a notification on the screen of the user terminal 200 located near the bollard 100. (135) can be controlled.

On the other hand, when the speed of the approaching vehicle (c) is less than the reference speed or the braking distance of the approaching vehicle (c) is less than the distance between the vehicle and the pedestrian crossing, the bollard 100 notifies the user adjacent to the bollard 100. May not be provided.

5 and 6, the bollards 101, 103, and 105 may be arranged at regular intervals along the sidewalk of a crosswalk. For example, the first and second bollards 101 and 105 may be disposed on one side and the other side of the crosswalk, and the third bollard 103 is disposed in the center of the first and second bollards 101 and 105 Can be. However, the number of bollards 101, 103, and 105 may be variously modified and installed on the sidewalk of a crosswalk.

Referring to <A1> of FIG. 5, when a signal of a pedestrian traffic light is a stop signal (ie, a red signal), the bollards 101, 103, and 105 may display red light on the floor of the sidewalk. In this case, the red light may be displayed in a dotted line. However, this is only an example, and the red light may be transformed into various shapes and intensities.

At this time, although not clearly shown in the drawings, the bollards 101, 103, and 105 can detect whether a pedestrian advances to a crosswalk. In this case, the bollards 101, 103, and 105 may generate a warning sound or generate a notification signal for displaying a notification on the screen of the user terminal 200.

Next, referring to <A2> of FIG. 5, when the signal of the pedestrian traffic light is a walking signal (ie, a green signal), the bollards 101, 103, and 105 may display green light on the floor of the sidewalk. In this case, the green light may be displayed in a dotted line like the red light. However, this is only an example, and the green light may be transformed into various shapes and intensities.

At this time, the bollards 101, 103, and 105 may display the same color as the signal of a pedestrian traffic light on the floor of the sidewalk.

Likewise, referring to <B1> of FIG. 6, when a signal of a pedestrian traffic light is a stop signal (ie, a red signal), the bollards 101, 103, and 105 may display red light on the floor of the sidewalk. In this case, the red light may be displayed on the bottom of the sidewalk in a radial pattern.

Next, referring to <B2> of FIG. 6, when the signal of the pedestrian traffic light is a walking signal (ie, a green signal), the bollards 101, 103, and 105 display green light on the floor along the long axis of the crosswalk. I can. In this case, the green light is displayed in a radial pattern like the red light, but the display direction of the light source may be displayed in a direction crossing the crosswalk. However, this is only an example, and the green light may be transformed into various shapes and intensities.

In summary, the bollards 101, 103, and 105 may display a stop signal or a walking signal on the floor of the sidewalk with various patterns and various intensity of light. Through this, since the pedestrian can intuitively grasp the signal of the pedestrian traffic light, the awareness of the pedestrian signal is improved, and the risk of a traffic accident caused by not recognizing the pedestrian traffic light can be reduced.

7 is a view for explaining some examples of the operation of the pedestrian traffic safety system inducing walking on the right. 8 is a view for explaining another example of the operation of the pedestrian traffic safety system according to the traffic signal information. Hereinafter, the bollards 101, 103 and 105 arranged at regular intervals along the sidewalk of a crosswalk will be described as an example.

Referring to FIG. 7, when a signal of a pedestrian traffic light is a stop signal (ie, a red signal), the bollards 101, 103, and 105 may display red light on the bottom of the sidewalk.

The red light between the first bollard 101 and the second bollard 103 may be displayed as an animation moving in a direction from the first bollard 101 to the second bollard 103.

For example, referring to <C1>, dotted lines (sequence points) represented by red light are implemented as animations that move from the first bollard 101 to the second bollard 103 to induce a pedestrian to the right. have.

In addition, referring to <C2>, the radial light source represented by red light is implemented as an animation moving from the first bollard 101 to the second bollard 103 to induce a pedestrian to the right.

In addition, referring to <C3>, the light source displayed between the first bollard 101 and the second bollard 103 may be indicated by the phrase “walk on the right” and “arrow mark” to move to the right. For reference, the light source displayed between the second bollard 103 and the third bollard 105 may appear as a phrase “stop” and a sign saying that you do not enter the crosswalk.

In addition, referring to <D1> of FIG. 8, when a signal of a pedestrian traffic light is a stop signal (ie, a red signal), the bollards 101, 103, and 105 may display red light on the floor of the sidewalk. In this case, the red light may be displayed on the bottom of the sidewalk in a radial pattern.

Next, referring to <D2> of FIG. 8, when the signal of the pedestrian traffic light is a walking signal (ie, a green signal), the second and third bollards 103 and 105 are green light on the floor along the long axis of the crosswalk. Can be displayed. In this case, the green light is displayed in a radial pattern like the red light, but the display direction of the light source may be displayed in a direction crossing the crosswalk.

On the other hand, the first bollard 101 may still be displayed in red light on the bottom of the sidewalk of the crosswalk. In this case, the red light may be displayed on the bottom of the sidewalk in a radial pattern.

That is, the light source radiated from the first bollard 101 and the light source radiated from the second and third bollards 103 and 105 may be displayed in different directions and colors.

Through this, pedestrians can be guided to move to the right area of the crosswalk. When pedestrians move to the right side of the crosswalk and cross the crosswalk, a sufficient safety distance can be secured between the pedestrian and the approaching vehicle. In addition, in this case, it is possible to reduce the chance that the pedestrian collides with another pedestrian on the other hand, and thus the convenience and stability of pedestrians using the crosswalk can be improved.

9 is a flowchart illustrating a method of operating a pedestrian traffic safety system according to another embodiment of the present invention.

Referring to FIG. 9, in a method of operating a pedestrian traffic safety system according to another embodiment of the present invention, the bollard 100 receives speed data and position data of a vehicle approaching a pedestrian crossing from a sensor box 300 ( S210). In this case, the bollard 100 may calculate the braking distance of the vehicle approaching the crosswalk through the braking distance calculation unit 120.

Subsequently, the bollard 100 calculates the braking distance of the vehicle based on the speed data received from the sensor box 300 (S220). In this case, the bollard 100 may calculate the braking distance of the vehicle approaching the crosswalk through the braking distance calculation unit 120.

Subsequently, the bollard 100 determines whether the calculated braking distance is greater than the distance between the vehicle and the crosswalk (ie, the remaining distance to the crosswalk) (S230).

Subsequently, when the braking distance is greater than the distance between the vehicle and the crosswalk, the bollard 100 provides a notification about the danger situation to the pedestrians adjacent to the crosswalk (S240). A detailed method of providing a notification to the pedestrian by the bollard 100 will be described later in detail with reference to FIG. 5. Through this, it is possible to reduce the incidence of traffic accidents that may occur to pedestrians near the crosswalk.

On the other hand, when the braking distance of the vehicle approaching the crosswalk is smaller than the distance between the vehicle and the crosswalk, the bollard 100 may not provide a notification.

Additionally, in another embodiment of the present invention, when the braking distance of the vehicle approaching the crosswalk is greater than the distance between the vehicle and the stop line, the bollard 100 may provide a notification to the pedestrian adjacent to the bollard 100. . For example, when the braking distance of a vehicle approaching the crosswalk is 20 m and the distance between the vehicle and the stop line is 15 m, the bollard 100 may provide a notification to a pedestrian adjacent to the bollard 100. In this case, the bollard 100 may provide a notification of a pattern different from that provided when the braking distance of the vehicle approaching the crosswalk is greater than the distance between the vehicle and the crosswalk to the pedestrian.

Hereinafter, a specific method of providing a notification to a pedestrian by the bollard 100 will be described with reference to FIG. 10.

10 is a flowchart illustrating a method for providing a notification to neighboring users.

Referring to FIG. 10, first, the bollard 100 may generate a notification signal to provide a notification to a pedestrian adjacent to the bollard 100 (S241). Here, the generated notification signal may be transmitted to the outside through the notification signal generator 135.

Subsequently, the user terminal 200 receiving the notification signal from the bollard 100 may display the notification on the screen (S143). For example, when a notification signal is detected, the user terminal 200 may display a warning screen on the screen or switch the screen to a lock screen. However, this is only an example, and the user terminal 200 may provide notifications in various forms through which the user can recognize a dangerous situation.

In addition, the bollard 100 may change the intensity or pattern of the light source irradiated from the light source unit 131 in order to provide a notification to pedestrians adjacent to the bollard 100 (S245). For example, the light source irradiated from the light source unit 131 may be expressed as light that flashes in a 0.5 second cycle. However, the present invention is not limited thereto, and the intensity or pattern of light irradiated from the light source unit 131 may be variously changed and implemented.

In addition, the bollard 100 may output sound through the speaker unit 133 in order to provide a notification to pedestrians adjacent to the bollard 100 (S247). In this case, the output sound may be a sound or a signal sound indicating that a vehicle approaching the user exists. For example, the bollard 100 may repeatedly output a 3-second notification sound through the speaker unit 133. However, this is only one embodiment, and the bollard 100 may output notification sounds of various lengths, sizes, or patterns through the speaker unit 133.

Additionally, the bollard 100 may provide a notification to the pedestrian by performing one or more of steps S241, S245, and S247. For example, the bollard 100 may provide a notification about a dangerous situation to a pedestrian through a notification signal and a light source.

11 is a flowchart illustrating a method of operating a pedestrian traffic safety system according to another embodiment of the present invention.

Referring to FIG. 11, according to the operation method of the pedestrian traffic safety system according to another embodiment of the present invention, first, the bollard 100 includes speed and position data, environment sensing data, and accident history information of a vehicle approaching a crosswalk. It receives (S310).

Subsequently, the Bollard 100 calculates a traffic accident rate (ie, an accident rate) based on the received data (S320). At this time, the accident rate can be calculated in various ways.

For example, the accident rate may be calculated using weather information, accident history information, road surface information, or vehicle speed information. In addition, the accident rate may be calculated by applying each of the accident rates calculated for the above-described weather information, accident history information, road surface information, or vehicle speed information to a multivariate analysis method. A detailed description of this will be described later with reference to FIG. 12.

Subsequently, the bollard 100 determines whether the calculated accident rate is greater than a predetermined reference value (S330).

Subsequently, when the calculated accident rate is greater than a predetermined reference value, the bollard 100 provides a notification to pedestrians adjacent to the crosswalk in various ways (S340). At this time, one or more of the above-described methods (i.e., displaying a notification on the screen of the user terminal through the generation of a notification signal, changing the light source intensity and pattern, or operating a speaker) may be used as a method for providing notification to pedestrians adjacent to the crosswalk I can.

Hereinafter, a specific method for calculating a traffic accident incidence rate (ie, an accident rate) will be described with reference to FIG. 12.

12 is a diagram for explaining step S320 of FIG. 11.

Referring to FIG. 12, first, the controller 160 of the bollard 100 may calculate an accident rate according to the road surface information (S321).

Specifically, the controller 160 determines whether the road surface temperature is an image and the air temperature is below zero based on the received environment sensing data. This is because if the road surface temperature is an image and the air temperature is below zero, the possibility of ice formation on the road surface increases.

Subsequently, the bollard 100 receives weather information through the communication unit 110.

Subsequently, the control unit 160 stores the received weather information and environment sensing data in the memory unit 170, and predicts freezing of the road surface based on the stored data.

Subsequently, when freezing of the road surface is predicted, the controller 160 may calculate an accident rate according to the road surface information.

In addition, in another embodiment, the controller 160 may calculate a dew point temperature using the relative humidity information and air temperature information included in the environmental sensing data, and calculate a traffic accident incidence rate according to the road surface information using the dew point temperature. . In other words, the control unit 160 may use the dew point temperature to calculate the traffic accident incidence rate for the road surface information. At this time, the dew point temperature can be calculated by the following [Equation 1].

[Equation 1]

Here, Dp is the dew point temperature, T is the air temperature, RH is the relative humidity, β and λ are Magnus constants according to temperature, where β is 17.62 and λ is 243.12°C.

The control unit 160 may compare the dew point temperature and the road surface temperature to determine whether there is ice on the road surface, and calculate a traffic accident incidence rate for the road surface information by using the calculated dew point temperature.

The control unit 160 may calculate a vehicle's braking distance from the following [Equation 2] to calculate a traffic accident rate (ie, an accident rate due to road icing) with respect to the road surface information.

[Equation 2]

Here, d is the braking distance (m), v is the driving speed of the vehicle (Km/h), f is the coefficient of sliding friction between the tire and the road surface, and s is the longitudinal slope (%).

Subsequently, the controller 160 may calculate an accident rate according to the weather information (S322).

Specifically, the control unit 160 calculates the stopping distance according to weather conditions such as rainfall, snow, fog, etc. using the following [Equation 3], and calculates the visibility distance using the following [Equation 4], Accident rates can be calculated according to weather information.

[Equation 3]

Here, SSD is the stopping distance (m), V is the driving speed of the vehicle (Km/h), tr is the cognitive response time (sec), f is the tire-road friction coefficient, s is the slope (m/m, uphill (+ ), means downhill (-)).

[Equation 4]

Here, VD is the visibility distance (m), b _scat is the scattering _{coefficient, and b abs} is the absorption coefficient.

The control unit 160 determines that it is possible to safely drive at the speed of the vehicle when the visibility distance VD calculates the stopping distance SSD and the visibility distance VD is greater than the stop distance SSD. When (VD) is less than the stopping distance (SSD), it may be determined that safe driving at the speed of the vehicle is impossible.

Accordingly, the control unit 160 calculates an accident rate according to weather information (i.e., an accident rate according to weather information) by using the stop distance (SSD) as the visibility distance (VD), so that the user recognizes and reacts to a sudden situation and can respond quickly. I can do it.

Subsequently, the accident rate according to the vehicle speed information of the control unit 160 may be calculated (S323).

Specifically, the controller 160 may calculate the accident rate according to the vehicle speed information by using the relationship between the average travel speed and the traffic accident rate. In addition, the controller 160 may calculate an accident rate according to the vehicle speed information by using a relative accident rate with respect to the vehicle speed compared to the average speed.

Subsequently, the controller 160 may calculate an accident rate according to the accident history information (S324).

Specifically, the controller 160 may calculate a traffic accident incidence rate using hourly, weekly, and monthly traffic accident rate information received from an agency related to road traffic. In addition, the controller 160 may calculate the traffic accident incidence rate by using the traffic accident incidence rate information on a specific road and an area received from an agency related to road traffic.

Subsequently, the control unit 160 may calculate a traffic accident forecasting system algorithm by applying a multivariate analysis method to the accident rate according to the road surface information, weather information, vehicle speed information, and accident history information (S325). Preferred multivariate analysis methods used herein are discriminant analysis, multiple regression analysis, factor analysis, correlation analysis, and various other analyzes can be used.

The controller 160 may calculate four traffic accident forecasting system algorithms by calculating each analysis method using [Equation 5].

[Equation 5]

Here, y is the prediction function, β0 is a constant for the predicted accident rate through each analysis method (different for each analysis method), and β1 to βn are the coefficients (i.e., weights) of each term of the prediction function (here, the discriminant analysis is canonical. Correlation coefficient, multiple regression analysis is a regression coefficient, factor analysis is a factor variable coefficient, and correlation analysis uses a covariate between dependent-independent variables), and F1~Fn are independent variables used in the prediction function (i.e., road surface information, weather). Information, vehicle speed information, and accident rate according to accident history information).

Subsequently, the control unit 160 uses the following [Equation 6] to measure the explanatory power of the four analysis methods calculated by [Equation 5], and the highest explanatory power among them is the final traffic accident incidence rate (ie, the final Accident rate) can be calculated (S326).

[Equation 6]

Here, r is the explanatory power, Y is the set of data on the accident rates of the past data (i.e., the number of databases for the accident rates in the accident history information included in the second information), and y is calculated by the prediction function. It is a database of accident rates (that is, the number of databases), sd is the standard deviation for the database of accident rates, and n is the size of the database (ie, the number of databases) for the past accident rates.

For example, the control unit 160 may select the accident rate calculated by the discriminant analysis (that is, the traffic accident incidence rate) when the explanatory power using discriminant analysis is the highest as a result of calculating each analysis method using [Equation 6]. have.

Additionally, in another embodiment of the present invention, the controller 160 may calculate a final accident rate by applying a weight to the calculated traffic accident rate. For example, the controller 160 may calculate the final accident rate by multiplying and summing the accident rates for each weather information, accident history information, road surface information, and vehicle speed information by a predetermined weight.

Further, in another embodiment of the present invention, the traffic accident incidence rate (accident rate) may be applied by selecting any one of the above-described road surface information, weather information, vehicle speed information, and accident rate according to the accident history information.

Through this, the pedestrian traffic safety system can provide accurate notification of the risk of traffic accidents to pedestrians adjacent to the crosswalk by calculating a more accurate traffic accident incidence rate.

13 and 14 are diagrams for explaining some examples of the operation of the pedestrian traffic safety system notifying the user of the danger of a traffic accident. Here, FIGS. 13 and 14 are diagrams illustrating a case where a pedestrian traffic safety system is installed on a crossroad of a rear road.

Referring to FIG. 13, first, the sensor box 300 measures the speed (V) and position of the vehicle (C) (S21). Additionally, the sensor box 300 may measure air temperature, humidity, air pressure, and road surface temperature.

Subsequently, the sensor box 300 transmits the speed (V) and position data of the vehicle (C) to the first bollard (100a) (S22). In this case, the sensor box 300 may additionally transmit environmental sensing data to the first bollard 100a.

Subsequently, the first bollard 100a calculates the braking distance of the vehicle approaching the crosswalk, and when the calculated braking distance is greater than the distance between the vehicle and the reference line L1, a notification is provided to the pedestrian (S23). Here, the reference line L1 is a line connecting the first bollard 100a installed on one side of the crosswalk and the second bollard 100b installed on the other side of the crosswalk in a straight line.

For example, when the braking distance calculated by the first bollard 100a is greater than the distance between the vehicle and the reference line L1, the first bollard 100a is the above-described method (i.e., generating a notification signal, outputting a light source or sound). ) To provide notification to pedestrians. In addition, the second bollard 100b installed on the other side of the crosswalk may also provide a notification to nearby pedestrians.

That is, the pedestrian traffic safety system can determine the risk of a traffic accident by calculating the braking distance of the approaching vehicle. Subsequently, when the risk of a traffic accident is high (that is, when the braking distance is not sufficiently secured by approaching faster than the reference speed), the bollards 100a and 100b may provide a notification notifying the danger of a traffic accident to nearby pedestrians.

The bollard 100 may provide notifications to nearby pedestrians in various ways. Here, it will be described as an example that the bollard 100 provides a notification to nearby pedestrians using various light source patterns.

Referring to FIG. 14, <E1> represents an example of a light source represented by the bollard 100, and the bollard 100 uses a dotted line (or sequence point) that flashes in red light to provide information on a speeding vehicle to nearby pedestrians. You can signal the danger. In this case, as the driving speed of the speeding vehicle increases, the flashing speed can be adjusted faster. In addition, the higher the driving speed, the larger and darker the blinking pattern may be displayed.

<E2> represents another example of a light source represented by the bollard 100, and the bollard 100 may notify nearby pedestrians of the danger of a speeding vehicle by using a radial light source represented by red light. In this case, as the driving speed of the speeding vehicle increases, the flashing speed of the radial light source can be adjusted faster. In addition, the higher the driving speed, the larger and darker the blinking pattern may be displayed.

<E3> represents another example of the light source represented by the bollard 100, and the bollard 100 includes the light source unit 131 so that a mark representing a'stop signal' or a mark representing a'no traffic' is displayed on the bottom surface. By controlling, it is possible to inform nearby pedestrians of the danger of a speeding vehicle. In this case, as the speeding vehicle approaches, the size of the displayed mark may increase gradually. In addition, as the driving speed of the speeding vehicle increases, the size and intensity of the displayed mark increase, and may be displayed so as to sometimes flash.

However, this will only represent some examples of notifications notifying the danger of traffic accidents, and the present invention is not limited thereto, and the present invention may be variously modified and implemented using various notification means.

15 is a flowchart illustrating a method of operating a pedestrian traffic safety system according to another embodiment of the present invention. 16 is a diagram illustrating an example of an operation of a pedestrian traffic safety system in which a moving path of a right-turning vehicle is displayed at an intersection.

Referring to FIG. 15, in the pedestrian traffic safety system according to another embodiment of the present invention, the bollard 100 first receives data on a vehicle approaching an intersection (S410). At this time, the sensor box 300 measures the speed and position of a vehicle approaching the intersection and generates speed and position data for this. In addition, the sensor box 300 detects the direction indicators of the vehicle, and generates direction indicator data for them.

Subsequently, the sensor box 300 transmits the generated data to the bollard 100.

Subsequently, the bollard 100 determines whether the approaching vehicle turns right based on the received data (S420). Additionally, the bollard 100 may determine not only the right turn of the approaching vehicle, but also whether a left turn or just before. That is, the bollard 100 may determine the traveling direction of the approaching vehicle.

Subsequently, when the approaching vehicle turns right, the bollard 100 displays a guide pattern guiding the turning radius of the vehicle turning right (S430). At this time, the guide pattern represents a recommended movement path for a right-turning vehicle. Here, the guide pattern may be formed to maintain a predetermined radius of rotation.

Referring to FIG. 16, when it is determined that the vehicle C approaching the intersection makes a right turn, the bollard 100 displays a turning radius guide pattern G on the bottom surface of the road.

Here, the rotation radius guide pattern G is indicated by a dotted line, but the present invention is not limited thereto, and the pattern, size, and intensity of the rotation radius guide pattern G may be variously modified and implemented.

In addition, although not clearly shown in FIG. 16, the bollard 100 includes speed and position data of the approaching vehicle C and direction indicators from a sensor box (not shown) arranged on a straight path of the approaching vehicle C. You can receive data. Based on this, the bollard 100 may determine whether the approaching vehicle C turns right.

Additionally, when there is a right-turning vehicle, the bollard 100 may provide a notification about the existence of the right-turning vehicle to pedestrians located near the bollard 100.

For example, when a right-turning vehicle approaches the bollard 100, the light source unit 131 or the speaker unit 133 provided in the bollard 100 is operated, or the user terminal 200 located near the bollard 100 By generating a notification signal that displays a notification on the screen of, it is possible to provide a notification about a vehicle turning right to a nearby pedestrian.

Referring back to FIG. 15, the bollard 100 determines whether the approaching speed of the approaching vehicle is greater than a predetermined reference speed (S440). At this time, the bollard 100 may determine whether or not the approaching vehicle is speeding by using the speed data of the approaching vehicle received from the sensor box 300.

Subsequently, when the approaching speed of the approaching vehicle is greater than the reference speed, the bollard 100 provides various methods of notifying the adjacent user about the presence of the speeding vehicle (S450).

Here, the notification of the speeding vehicle operates the light source unit 131 or the speaker unit 133 provided in the bollard 100, or displays a notification on the screen of the user terminal 200 located near the bollard 100. It can be provided by generating a notification signal. A detailed description of this has been described above, so it will be omitted here.

However, steps S440 and S450 described above may be omitted and performed depending on the situation, or may be replaced with a method of calculating the above-described braking distance and determining that it is a dangerous situation based on the calculated braking distance.

Through this, the pedestrian traffic safety system can secure a safe distance between the approaching vehicle and the pedestrian by maintaining a constant turning radius of the approaching vehicle. As the safety distance is secured, the risk of traffic accidents for pedestrians located near intersections or crosswalks can be reduced.

In addition, the pedestrian traffic safety system provides a notification about the right-turning vehicle to the pedestrians located near the bollard 100, thereby enabling the pedestrian to recognize the right-turning vehicle, thereby reducing the incidence of traffic accidents at an intersection or crosswalk.

As described above, although the present invention has been described by the limited embodiments and drawings, the present invention is not limited to the above embodiments, which is, if one of ordinary skill in the field to which the present invention belongs, various modifications and Transformation is possible. Therefore, the idea of the present invention should be grasped only by the claims set forth below, and all equivalent or equivalent modifications thereof will be said to belong to the scope of the idea of the present invention.

100: Bollard
200: user terminal
300: sensor box
400: signal device

Claims (10)

In the traffic accident prevention system including a bollard installed to be adjacent to the corner of an intersection,
A light source unit for irradiating light onto a floor surface adjacent to the intersection;
A communication unit for receiving data on an approach vehicle; And
Based on the received data, comprising a control unit for controlling the light source unit so that the moving path on the intersection of the approaching vehicle is irradiated to the floor surface,
The control unit,
Judging the direction of the approaching vehicle,
When the approaching vehicle approaches the bollard, operating the light source unit to irradiate light near the bollard, or generating a notification signal displaying a notification on the screen of a user terminal located near the bollard.
Pedestrian traffic safety system.
delete The method of claim 1,
The communication unit receives speed data and location data for an approaching vehicle,
When the speed of the approaching vehicle is greater than a predetermined speed, the control unit operates a light source unit or a speaker unit provided in the bollard, or generates a notification signal for displaying a notification on the screen of a user terminal located near the bollard.
Pedestrian traffic safety system.
The method of claim 3,
The communication unit further receives environmental sensing data including air temperature, humidity, air pressure, and road surface temperature,
Further comprising a braking distance calculation unit for calculating a road surface freezing degree based on the environment sensing data, and calculating a braking distance of the approaching vehicle using the road surface freezing degree and the speed data and the position data
Pedestrian traffic safety system.
The method of claim 4,
The control unit
When the braking distance is greater than the distance between the approaching vehicle and the crosswalk, operating the light source unit or the speaker unit provided in the bollard, or generating a notification signal displaying a notification on the screen of the user terminal
Pedestrian traffic safety system.
The method of claim 3,
The control unit
Calculate a braking distance based on the speed data and the position data,
When the braking distance is greater than the distance between the approaching vehicle and the pedestrian crossing, increasing the intensity of the light source or changing the display pattern of the light source
Pedestrian traffic safety system.
delete The method of claim 1,
The control unit
Controlling the light source unit so that the moving path maintains a predetermined radius of rotation
Pedestrian traffic safety system.
The method of claim 1,
The communication unit receives speed data, location data, and direction indicator data for the approaching vehicle,
The control unit controls the light source unit to irradiate the moving path when the approaching vehicle turns right based on the received data.
Pedestrian traffic safety system.
The method of claim 9,
The control unit
When the speed of the approaching vehicle is greater than a predetermined speed, operating a light source unit or a speaker unit provided in the bollard, or generating a notification signal displaying a notification on the screen of a user terminal located near the bollard.
Pedestrian traffic safety system.

Images