KR102549464B1 - Sensitive Bollard Device Based on Radar Detection for Mutual Recognition of Vehicles and Pedestrians - Google Patents

Abstract

The present invention is installed along the road with a built-in radar at an affordable price, and provides visual notification to the driver and pedestrians of the vehicle through LED of the result of detecting the driving direction and speed of the vehicle, thereby reducing false detection due to environmental factors. , It relates to a radar detection-based sensitive bollard device for mutual recognition of a vehicle and a pedestrian, which optimizes vehicle detection performance and supports effective pedestrian protection.

Description

Sensitive Bollard Device Based on Radar Detection for Mutual Recognition of Vehicles and Pedestrians}

The present invention relates to a bollard device, which is installed along a road with a built-in radar at a relatively low price, and provides visual notifications to vehicle drivers and pedestrians through LEDs of the results of detecting the driving direction and speed of a vehicle. It relates to a radar sensing-based sensitive bollard device for mutual recognition of a vehicle and a pedestrian, which supports effective pedestrian protection by optimizing vehicle detection (identification) performance while reducing false detection due to environmental factors.

According to the survey, out of 3349 deaths from traffic accidents in 2019, pedestrians accounted for 38.9%. As the number of accidents has been continuously increasing recently, countermeasures tailored to the aging trend of society are urgently required.

As measures to prevent pedestrian accidents, installation of caution and warning structures such as bollards at crosswalks, installation of protective fences between roads and sidewalks, establishment of children and elderly protection areas, and execution of safety speed 5030 are carried out, and some effects are seen. However, there is still a limit to protecting pedestrians who unconsciously or habitually move to the roadway at the boundary between the road and the sidewalk, such as a crosswalk or bus stop.

In particular, accidents due to jaywalking at night are constantly occurring, requiring attention from drivers as well as pedestrians.

In recent years, as the number of pedestrian casualties in right-turn traffic accidents has increased at intersections, the law has been revised and implemented to protect pedestrians. Violations and accidents still occur due to driving and wrong driving habits, and many drivers are confused due to unclear laws and regulations, and disputes such as ringing a horn at a stopped vehicle in the absence of pedestrians are also occurring.

To this end, LED safety guidance blocks, an upright lighting method, have been installed as a safety line concept in crosswalk access roads and pedestrian waiting areas where pedestrian accidents are frequent, but there are still many sections that are not applied due to budget and complexity of system construction, and pedestrians and vehicles There is a need for a system in which more three-dimensional and multifaceted means are applied to reflect the driver's various behavioral characteristics.

Republic of Korea Patent No. 10-1728080 (2017.04.12) Republic of Korea Patent No. 10-1532554 (2015.06.24)

The present invention was created to solve the above problems, and an object of the present invention is to effectively protect pedestrians by providing visual notifications to vehicle drivers and pedestrians by analyzing the results of detecting the driving direction and speed of the vehicle through radar. To provide a radar sensing-based sensitive bollard device for mutual recognition of vehicles and pedestrians so that

For the above purpose, the present invention protrudes in a columnar shape between a driveway and a sidewalk, and a light reflector and a light emitting unit made of LEDs capable of outputting a plurality of colors are formed along the circumference, installed at set intervals along the road multiple bodies; a vehicle detection module comprising a radar built into the body and detecting a vehicle passing through the road; A calculation unit that calculates the speed of the vehicle by collecting the detection results of the vehicle detection module, and a first unit that generates a determination signal that determines whether the speed limit in the corresponding zone is exceeded and the distance and arrival time to the crosswalk through the calculated speed a control module including a determination unit and a driving unit for controlling the light emitting unit to emit light in a set color in response to the determination signal; It is characterized in that it includes.

At this time, the light emitting part includes a first light emitting part that surrounds the body and outputs a selected color in all directions in front, rear, left, and right directions, and a plurality of light passages formed toward the roadway and having a light divergence angle that is sequentially varied in response to the moving direction of the vehicle. It may be composed of a second light emitting unit formed with a reflector surrounding an inner surface of the light passage.

In addition, the control module further includes a second determination unit that collects and analyzes detection results of the vehicle detection module to detect reverse driving and two-wheeled vehicles entering sidewalks, and responds to the determination result of the second determination unit to the outside of the body. an alarm module outputting an alarm signal; may further include.

In addition, a pedestrian detection module made of a radar embedded in the body and detecting a pedestrian passing through the sidewalk; Further, the control module may further include a third determination unit configured to analyze the detection result of the pedestrian detection module, determine the intention of the pedestrian to enter the roadway, and generate a determination signal.

In addition, an interlocking module for obtaining signal information according to pedestrian crossing in connection with the traffic signal system of the intersection; Further, the body may further include an interlocking unit that emits light in the same color in response to the signal information.

Through the present invention, by analyzing the motion of a vehicle traveling on the road, the bollard installed between the roadway and the sidewalk responds, and by driving the mounted LED lamp to warn not only pedestrians but also the vehicle driver, it is possible to effectively prevent accidents caused by contact between vehicles and people. can

In particular, in situations where visibility is not secured smoothly, such as unexpected pedestrian movements or right turns at intersections, pedestrian protection measures suitable for the recently changed pedestrian protection regulations can be implemented through effective warning to the vehicle side. Pedestrian protection measures may be implemented.

1 is a first conceptual diagram of the present invention;
2 is a second conceptual diagram of the present invention;
3 is a block diagram showing the configuration and connection relationship according to an embodiment of the present invention;
4 is a perspective view showing the outer appearance of a body according to an embodiment of the present invention;
5 is a cross-sectional view showing the structure of a light emitting unit according to an embodiment of the present invention;
6 is a third conceptual diagram according to an embodiment of the present invention.

Hereinafter, the structure and configuration of a radar sensing-based sensitive bollard device for vehicle and pedestrian mutual recognition will be described in detail with reference to the accompanying drawings.

1 is a first conceptual diagram of the present invention. In the present invention, a sensitive bollard, which is a body 1 protruding in a column shape, is installed between a road and a sidewalk along a road in a section where traffic accidents are common, and the body 1 ) through the built-in radar to detect and analyze the driving direction and speed of vehicles located on the road, and then provide visual notifications to vehicles and pedestrians through LED lamps to prevent accidents.

Figure 2 is a second conceptual diagram of the present invention, in an embodiment of the present invention, the body is installed in plurality at intervals of about 25 to 30 m, and the time for the vehicle to pass through the point where each body 1 is located according to the road environment , That is, it is explained that the speed of the vehicle can be calculated through the time when each body 1 recognizes the vehicle and the interval between the installed bodies 1.

Figure 3 is a block diagram showing the configuration and connection relationship according to an embodiment of the present invention, the present invention is a light emitting unit 12, a vehicle detection module 13 and a control module as main components embedded in the body 1 Including (17), a pedestrian detection module 14 for extended functions, an alarm module 15, and an interlocking module 16 may be provided.

Figure 4 is a perspective view showing the external appearance of the body according to an embodiment of the present invention, as mentioned above, the body (1) is a bollard installed at the boundary between the road and the sidewalk, and in the embodiment of the present invention, the body in a preferred form Although (1) has exemplified the shape of a square column, it may also consist of a column having a polygonal cross section or other unspecified cross-sections, including a cylindrical column.

At this time, a light reflector 11 that basically reflects the light of night headlights is formed around the upper side of the body 1 so that the vehicle driver can identify the body 1, and a light emitting unit made of LED capable of outputting a plurality of colors. (12) is formed so as to be able to check in all directions outside the body (1).

The light emitting unit 12 may basically be configured to emit blue and red light to warn of safe and dangerous conditions, and may include LEDs emitting additional colors such as yellow, if necessary.

When the cross section of the body 1 is rectangular as in the embodiment of the present invention, the surface on which the light reflector 11 and the light emitting part 12 are formed is not perpendicular to the direction of the road, but can be easily identified by the driver of the vehicle in motion. It is desirable to configure the angle in the direction in which the vehicle is approaching so that the driver of the vehicle traveling in the adjacent lane can easily identify it without interfering with the driver's or pedestrian's view of the vehicle traveling in the opposite lane. An optical passage 124 may be formed.

Figure 5 is a cross-sectional view showing the structure of the light emitting unit according to an embodiment of the present invention, basically emitting light in all directions around the body 1 so that pedestrians can identify it, while at the same time emitting light at right angles to the direction of the road. Instead of emitting light, a structure capable of intensively emitting some light in the direction where the vehicle is approaching is exemplified so as to increase the identification efficiency of the driver of the driving vehicle.

To this end, in the embodiment of the present invention, the light emitting part 12 surrounds the body 1, and the first light emitting part 121 outputs a selected color in all directions in the front, rear, left and right directions, and is formed toward the roadway and is formed in the moving direction of the vehicle. It is composed of a plurality of light passages 124 having light divergence angles that are sequentially varied and a second light emitting part 122 having a reflector 125 surrounding an inner surface of the light passages 124 .

The first light emitting unit 121 allows the light emitted from the LED to be emitted softly without glare through a diffuser plate, etc., and emits light of the selected color in all directions of the body so that pedestrians and vehicle drivers relatively close to the body can see it. emits light At this time, it is also possible to display a word that can notify a caution or dangerous state along with a color on the diffusion plate.

The second light emitting unit 122 is configured to intensively emit light emitted from the LED 123 so that a vehicle driver at a relatively long distance can easily check it, and is basically formed toward the roadway and corresponds to the moving direction of the vehicle. However, in detail, a plurality of light passages 124 formed in the direction in which the vehicle approaches are formed.

The light passage 124 is configured with a reflector 125 that collects the light emitted from the LED, so that the confirmation effect in the straight direction extending from the light passage can be maximized, and considering the movement of the vehicle, the moving direction of the vehicle can be maximized. A plurality of optical passages 124 are configured to have light divergence angles that are sequentially changed in correspondence with the .

Specifically, based on the movement of the vehicle from the right to the left, the angle is sequentially changed so that the light passage located on the right side and the light passage located on the left converge on the right angle formed by the sidewalk and the roadway, so that the driver of the moving vehicle is on the right side. The light emitted from the second light emitting unit 122 can be effectively checked for a certain period by sequentially checking the light of the light passage on the left side from the light of the located light passage.

The vehicle detection module 13 is made of a radar embedded in the body and is formed toward the road so as to detect a vehicle passing through the road. Basically, after transmitting radio waves in a predetermined frequency band and receiving reflected waves reflected from the transmitted radio waves through the vehicle, the vehicle is recognized using the Doppler effect.

It may vary depending on the width and environment of the road, but for smooth vehicle detection, a radar having a detection range of at least 12m is configured, and the vehicle detection module ( 13) is exposed, it is possible to optimize vehicle detection (identification) performance while reducing false detection due to environmental factors compared to the technology of detecting vehicles in the existing burial method.

6 is a third conceptual diagram according to an embodiment of the present invention, in which pedestrians are detected through the present invention in a place where pedestrians are poorly identified according to the visibility limit in a turning section, such as a crosswalk at an intersection, and the result is easily displayed to a vehicle driver. and ensure that effective pedestrian protection measures can be implemented.

The pedestrian detection module provided for this purpose is made of a radar embedded in the body and detects a pedestrian passing through the sidewalk through the same principle as the vehicle detection module.

The control module 17 is connected to the plurality of bodies 1 by wire or wireless, and as a basic function, analyzes the signal of the vehicle detection module 13 of each body to control the light emitting part 12. It may be built into the body or configured through a separate control panel, and the detailed configuration includes a calculation unit 171, a first determination unit 172, a second determination unit 173, and a third determination unit 174 and a drive unit 175.

The calculation unit 171 is configured to calculate the speed of the vehicle by collecting the detection results of the vehicle detection module, and calculates the moving speed of the vehicle, that is, speed and direction together. As described above with reference to FIG. 2 , speed can be calculated using time, which is the time difference detected in the movement distance, which is the distance between adjacent bodies, and acceleration and deceleration conditions can also be grasped.

The first determination unit 172 generates a determination signal by determining whether the speed limit in the corresponding zone is exceeded and the distance and arrival time to the crosswalk through the speed calculated by the calculation unit. Basically, the safety speed is set at 30 km in case of children's or elderly protection zone and 50-60 km in case of general city, so based on this, it is possible to check whether the speed of the vehicle exceeds the speed limit of the corresponding zone, and the location of the set crosswalk. The arrival time to the crosswalk according to the speed of the current vehicle can be calculated through the distance to the body closest to the crosswalk and reflected in the judgment signal. In addition, as mentioned above, since the calculation unit can also grasp the acceleration or deceleration conditions of the vehicle, it is possible to calculate the arrival time to the crosswalk reflecting this.

The second determination unit 173 is a component that collects and analyzes the detection results of the vehicle detection module to detect reverse driving and two-wheeled vehicles entering the sidewalk. During normal driving of the vehicle, the vehicle detected through the vehicle detection module matches the installation direction and order of the body, but when reverse driving occurs, the detection order of the vehicle detection module is reversed, so entering reverse driving can be easily recognized.

In addition, with the recent increase in delivery demand, illegal delivery of motorcycles has frequently occurred, and as this becomes a factor threatening the safety of pedestrians, effective crackdowns are required. In this case, it is easy to recognize that the two-wheeled vehicle has entered the sidewalk in the section between the bodies of the corresponding location, and illegal parking, which is pointed out as a major cause of pedestrian accidents such as children's protection areas, can also be confirmed using the same principle. That is, when the detected vehicle does not move for a predetermined period of time, it can be determined that illegal parking has been made.

The third determination unit 174 analyzes the detection result of the pedestrian detection module, determines the intention of the pedestrian entering the roadway, and generates a determination signal. That is, the pedestrian detection module 14 basically detects the presence or absence of a pedestrian, but determines whether the detected pedestrian is just a pedestrian passing on the sidewalk or a pedestrian trying to cross the road, so that the movement of the detected pedestrian can be tracked and managed in detail. There is a need. To this end, the third judgment unit 174 tracks the motion of the detected pedestrian, but basically recognizes that there is an intention to cross the road when it is close to the boundary between the road and the sidewalk, that is, a crosswalk. Pedestrian protection can be effectively implemented in accordance with the law.

The driving unit 175 controls the light emitting unit to emit light in a set color in response to the determination signal. In other words, depending on whether the vehicle approaching the crosswalk is speeding beyond the speed limit or complying with the speed limit, whether it is possible to stop at the crosswalk by securing a sufficient braking distance, or whether it is difficult to secure the braking distance. Safety and danger can be expressed through the color of the light emitting part.

As mentioned above, it is possible to intuitively check the state through red with a warning effect and blue indicating a safe state by default, but it is also possible to express it in stages with yellow and orange, which are intermediate steps.

In addition to these colors, the state can be expressed through a blinking operation, and when linked with the aforementioned pedestrian detection module 14, additional measures such as giving a blinking function to lights that can be checked from the vehicle side are also possible.

The alarm module 15 is a component that outputs an alarm signal to the outside of the body 1 in response to the judgment result of the second decision unit 173 . Two methods can be applied, and basically, a visual signal using a light emitting signal of a warning light provided separately from the light emitting unit is provided with a speaker to improve the daytime warning effect, and an auditory signal through a buzzer sound, an announcement, etc. It outputs warning signals for illegally parked vehicles, which are the main cause of pedestrian accidents, as well as warnings for vehicles entering the sidewalk and two-wheeled vehicles, so that measures can be taken.

The interworking module 16 acquires signal information according to pedestrian crossing in connection with the traffic signal system of the intersection. Through this, it is determined that there is no pedestrian to cross when the pedestrian traffic light is blue, and it is possible to pass slowly, and in a jaywalking situation ignoring the pedestrian signal, it draws the attention of the driver and accurately determines whether the pedestrian is approaching regardless of the signal condition. Pedestrian protection measures, such as inducing a driver to temporarily stop, can be implemented by reflecting the information.

Correspondingly, the body 1 may be provided with an interlocking unit 18 that functions to emit light in the same color in response to the signal information separately from the light emitting unit 12, and the pedestrian signal is displayed on the interlocking unit. It can intuitively express the condition of pedestrian signals that are difficult to check in turn sections such as intersections. At this time, the interlocking unit 18 may output a mark having the same shape as that of a pedestrian traffic light.

The rights of the present invention are defined by what is described in the claims, not limited to the embodiments described above, and that those skilled in the art can make various modifications and adaptations within the scope of rights described in the claims. It is self-evident.

1: body 11: light reflector 12: light emitting part
121: first light emitting unit 122: second light emitting unit
123: LED 124: optical path
125: reflector 13: vehicle detection module
14: pedestrian detection module 15: warning module
16: interlocking module 17: control module
171: calculation unit 172: first judgment unit
173: second judgment unit 174: third judgment unit
175: driving unit 18: interlocking unit

Claims (5)

It protrudes between the driveway and the sidewalk in a column shape, and along the circumference, a light reflector 11 and a light emitting unit 12 made of LEDs capable of outputting a plurality of colors are formed, and a plurality of light emitting units 12 installed at set intervals along the road Body (1);
A vehicle detection module 13 comprising a radar embedded in the body 1 and detecting a vehicle passing through the road;
The calculation unit 171 that calculates the speed of the vehicle by collecting the detection results of the vehicle detection module 13, and determines whether the speed limit in the corresponding zone is exceeded and the distance to the crosswalk and the arrival time through the calculated speed a control module 17 having a first determination unit 172 generating a signal and a driving unit 175 controlling the light emitting unit 12 to emit light in a set color in response to the determination signal; Including,
The light emitting part 12 includes a first light emitting part 121 that surrounds the body 1 and outputs a selected color in all directions in the front, rear, left, and right directions, and the light emitting part 121 formed toward the roadway and sequentially changing in response to the moving direction of the vehicle. A radar sensing-based sensitive bollard device, characterized in that composed of a plurality of optical passages 124 having an angle and a second light emitting part 122 having a reflector 125 formed on an inner surface of the optical passage 124.
delete According to claim 1,
The control module 17 further includes a second determination unit 173 that collects and analyzes detection results of the vehicle detection module 13 to detect reverse driving and the entry of a two-wheeled vehicle into the sidewalk,
A radar detection-based sensitive bollard device further comprising; an alarm module 15 outputting an alarm signal to the outside of the body in response to the determination result of the second determination unit 173.
According to claim 1,
A pedestrian detection module 14 comprising a radar embedded in the body and detecting a pedestrian passing on the sidewalk; further comprising,
The control module 17 further includes a third determination unit 174 that analyzes the detection result of the pedestrian detection module 14, determines the intention of the pedestrian entering the roadway, and generates a determination signal. Radar sensing based sensitive bollard device.
According to claim 4,
Further comprising an interlocking module 16 for acquiring signal information according to pedestrian crossing in connection with the traffic signal system of the intersection,
The body 1 further comprises a linking unit 18 emitting light in the same color in response to the signal information.

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