KR102101956B1 - Enforcement system for school-zone using pedestrian detection - Google Patents

Abstract

The present invention relates to an enforcement system for a school-zone. The present invention uses a radar sensor to detect pedestrians in a crosswalk and displays information indicating that the pedestrians are walking through a display unit and road signs at the same time when detecting pedestrians so that a driver can immediately recognize this in advance and effectively prevent accidents. The present invention predicts the collision of vehicles and pedestrians by using and analyzing the location and speed of the pedestrians and the location and speed of the detected vehicles and displays this information to the outside to lead the pedestrians to safely walk at the same time. The display unit is configured to display a vehicle license plate number as well as the vehicle speed of a sensing vehicle, so that traffic accidents can be prevented more effectively by maximizing the effect of alerting the vehicle driver to speeding.

Description

Enforcement system for school-zone using pedestrian detection

The present invention relates to a child protection zone enforcement system using a pedestrian detection, specifically, a pedestrian detection that can effectively prevent traffic accidents by maximizing the accuracy and reliability of pedestrian and vehicle detection by using a camera and a radar sensor. It is about the child protection zone enforcement system using.

In recent years, as the automobile industry has developed and the demand for vehicles has become popular, road traffic has accelerated, resulting in a significant increase in traffic accidents.

In particular, children, such as kindergarteners and elementary school students, are not only vulnerable to safety consciousness compared to adults, but also have distracted attention. Efforts have been made to prevent traffic accidents by inducing speed limits, but traffic accidents are still occurring frequently in children's protected areas.

There are various causes of traffic accidents in children's protected areas, but traffic accidents due to speeding are the main causes.

Accordingly, various unmanned traffic control equipments are being installed for the purpose of preventing speeding in children's protected areas and controlling speeding vehicles.

1 is a block diagram showing a hybrid type speed warning and a system for speed control disclosed in Korean Registered Patent No. 1744648 (invention name: hybrid speed warning and speed control system capable of speed violation control in school hours in a child protection zone).

The hybrid type speed warning and intermittent combined system of FIG. 1 (hereinafter referred to as a prior art) 100 includes a speed measuring device 110, an LED display board 120, a speed violation processing control device 130, and a camera device 140. Is made of

The speed measuring device 110 measures the vehicle speed using a laser or a radar when acquiring an operation signal provided by the speed violation processing control device 130.

When the LED display 120 acquires the operation signal provided by the speed violation processing control device 130, the LED is turned on to display a warning message to the driver.

The speed violation processing control device 130 controls the speed measurement device 110 so that the vehicle speed is measured when the vehicle speed measurement point is reached, and at the same time provides a primary shooting signal to the camera device 140 for shooting. Let this be done.

In addition, the speed violation processing control device 130 calculates the second shooting time according to the speed limit of the road after the first shooting, and provides a second shooting signal to the camera device 140 when the corresponding shooting time is reached.

In addition, the speed violation processing control device 130 calculates the vehicle speed using the number of pixels and the time difference between the primary photographed image and the secondary photographed image.

The prior art 100 configured as described above can control the speed violation during the school hours in the child protection zone, and simultaneously measure the vehicle speed according to the vehicle shooting and the vehicle speed measurement using a laser or radar, thereby minimizing errors in vehicle speed measurement. While having the advantage of increasing the detection rate.

However, the prior art 100 is a warning and enforcement of a speeding vehicle regardless of whether or not pedestrians are detected in the pedestrian crossing in the child protection area, so even if a speeding vehicle is detected in the state where the pedestrians in the pedestrian crossing are detected, there is no follow-up to this. It has a structural limitation that prevents accidents from happening.

In addition, the prior art 100 has a problem that when a plurality of vehicles are driving, the vehicle driver cannot identify whether the violation speed displayed on the LED display 120 is for himself or another driving vehicle, and The problem is that if there are a small number of driving vehicles, the driver of the intermittent vehicle can immediately recognize whether the violation speed expressed by the LED display board 120 is his own vehicle speed, but in the case of a large number of driving vehicles, the driver of the intermittent vehicle can use the LED display board. Since it is not easy to recognize whether the violation speed expressed in (120) is the vehicle speed or not, it has a disadvantage in that the effect for giving the speeding vehicle a warning about the speeding is insufficient.

In addition, the prior art 100 has a structural limitation in which only a leading vehicle can detect speed when a plurality of vehicles are traveling, because the camera device 140 is installed on the LED board 120 in a state facing the vehicle entrance direction. For example, when two or more vehicles are driving in succession, accurate speed detection is possible only for the leading vehicle, but accuracy of speed detection is limited for vehicles hidden by the leading vehicle.

In addition, in the prior art 100, when a plurality of vehicles are detected within a short period of time, there is no description and a method for assigning priority to which vehicle to output the vehicle speed, so that the vehicle is running at a normal speed. Due to this, there is a structural limitation that the vehicle speed of the violating vehicle cannot be expressed.

The present invention is to solve such a problem, and the problem of the present invention is to detect a pedestrian in a pedestrian crossing using a radar sensor and to display information indicating that the pedestrian is walking through display means and road signs during pedestrian detection. This is to provide a child protection zone enforcement system that allows the driver to immediately recognize this in advance and effectively prevent accidents.

In addition, another problem of the present invention is to predict the collision of the vehicle and the pedestrian by using and analyzing the location and speed of the pedestrian and the location and speed of the detected vehicle, and at the same time predicting the collision, the information about the pedestrian is displayed externally. It is to provide a child protection zone enforcement system that can induce safe walking.

In addition, another problem of the present invention is that the display means is configured to display the vehicle number as well as the vehicle speed of the sensing vehicle, thereby maximizing the effect of giving the vehicle driver a sense of overspeed, thereby preventing traffic accidents more effectively. To provide a child protection zone enforcement system.

In addition, another problem of the present invention is that the display means outputs information in a color corresponding to whether or not the detection vehicle is interrupted through the display information transmitted from the controller, thereby increasing visibility and visibility, so that the driver recognizes his / her speed quickly and accurately in the driving state. It is to provide a child protection zone enforcement system that can be done.

In addition, another problem of the present invention, when a plurality of vehicles are detected during a preset set period (Δt), the controller's display target determining unit calculates the level of control of each of the detected vehicles, and then, according to the calculated level of control. It is intended to provide a child protection zone enforcement system capable of providing information by selecting a vehicle in need of alertness among multiple detection vehicles by being configured to determine a display target.

The solution of the present invention for solving the above problems is a radar sensor for detecting a pedestrian on a pedestrian crossing (C); It is installed at a point spaced forward from the pedestrian crossing (C) to take a preset shooting area (S) to acquire an image, and analyzes the acquired image to detect the speed (v) and vehicle number of the detected vehicle Then, it compares the detected vehicle speed (v) with a preset speed limit (v ') to determine whether the detected vehicle is an intermittent vehicle, and when the detected vehicle is a normal vehicle rather than an intermittent vehicle, the vehicle speed (v), the vehicle A vehicle detection camera that generates detection information including information indicating a number and a normal vehicle, and generates detection information including vehicle speed (v), vehicle number, and information indicating that the vehicle is intermittent when the detected vehicle is an intermittent vehicle. ; By analyzing the radar signal transmitted and received by the radar sensor, the pedestrian in the pedestrian crossing (C) is detected, and when the detection information or the enforcement information is transmitted from the vehicle detection camera, the vehicle speed of the detection vehicle or the enforcement vehicle (v ), A controller that generates display information including a vehicle number, information on whether to control the traffic, and presence / absence of pedestrians; It is installed between the vehicle detection camera and the pedestrian crossing, and includes display means for displaying display information transmitted from the controller, and the display means is a normal vehicle in response to intermittent information of display information transmitted from the controller. The information on the intermittent vehicle is displayed differently with preset colors, and the controller receives the detection information from the vehicle detection camera for a preset period (Δt) from an input point in time when the detection information is transmitted from the vehicle detection camera. A search unit for searching whether other detection information or enforcement information has been received; When no other vehicle information or intermittent information is received during the set period (△ t) by the search unit, a display target is determined as a corresponding sensing vehicle, and other vehicles during the set period (△ t) are determined by the search unit. When receiving information or control information, after calculating the level of control of each of the detected vehicles, a display target determination unit for determining a detection vehicle having the highest level of control as a display target; A display information generation unit that generates display information according to a sensing vehicle determined as a display target by the display target determination unit; And a control unit configured to transmit display information generated by the display information generation unit to the display means, and the enforcement system further includes at least one speaker installed adjacent to the pedestrian crossing (C), and the controller. The crosswalk (C) further includes a collision prediction unit that is executed when a pedestrian is detected, and the collision prediction unit detects whether or not an intermittent vehicle is detected from the time the pedestrian is detected; It is executed when the intermittent vehicle is detected by the intermittent vehicle search module, and tracks the pedestrian's trajectory detected by analyzing the radar signals transmitted and received by the radar sensor, so that the pedestrian's walking speed, walking direction, pedestrian position, and pedestrian remaining distance A first elapsed time prediction module that detects and calculates a first elapsed time (T1) which is a predicted time required for a pedestrian to cross a pedestrian crossing (C) by using the pedestrian's remaining distance and walking speed; Executed when the intermittent vehicle is detected by the intermittent vehicle search module, detects the vehicle speed, the current position of the intermittent vehicle, and the remaining distance to the pedestrian crossing, and utilizes the vehicle speed of the intermittent vehicle and the residual distance to the pedestrian crossing A second elapsed time prediction module for calculating a second elapsed time (T2) which is a predicted time required for the intermittent vehicle to pass the crosswalk (C); The first elapsed time T1 calculated by the first elapsed time prediction module is compared with the second elapsed time T2 calculated by the second elapsed time prediction module, and if the first elapsed time T1 is It is predicted that collision accident will not occur if it is faster than the second elapsed time (T2), but if the first elapsed time (T1) is slower than the second elapsed time (T2), a collision prediction module that predicts that a collision may occur In addition, when the controller is predicted that a collision may occur by the collision prediction module, the controller controls the speaker to output a warning sound broadcast preset to the speaker.

In addition, in the present invention, the enforcement system further includes road markers installed to be buried in the road adjacent to the pedestrian crossing (C), and the controller includes the road markers when a pedestrian in the pedestrian crossing (C) is detected. It is preferable to control the road markers such that the road markers blink in a preset second color when the first pedestrian blinks in the preset first color, but a pedestrian in the pedestrian crossing (C) is not detected.

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In addition, in the present invention, the display target determining unit compares how many detection vehicles are detected during the set period (Δt) by utilizing and analyzing the search data detected by the search unit; An intermittent accuracy calculation module that operates when two or more detected vehicles are detected during the set period (Δt) by the comparison module and calculates the intermittent accuracy of each of the detected vehicles; When one detection vehicle is detected during the set period (△ t) by the comparison module, the corresponding detection vehicle is determined as a display target, but two or more detection vehicles are detected during the set period (△ t) by the comparison module. When the detection is detected, and includes a display target determination module for determining the vehicle with the highest level of intermittence calculated by the intermittence accuracy calculation module as a display target, the intermittence accuracy calculation module 1) when all of the detection vehicles are normal vehicles , Calculates the degree of control that is inversely proportional to the difference from the speed limit. 2) When one of the detected vehicles is one of the intermittent vehicles, the highest degree of control of the intermittent vehicle is calculated, and 3) among the intermittent vehicles. When there are two or more vehicles, it is desirable to calculate the degree of interruption that is proportional to the difference value from the speed limit among the intermittent vehicles after excluding normal vehicles.

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According to the present invention having the above-described problems and solutions, the driver detects a pedestrian in a pedestrian crossing using a radar sensor and, at the same time, displays information indicating that the pedestrian is walking through the display means and road signers when detecting the pedestrian, thereby allowing the driver to It can recognize immediately and effectively prevent accidents.

In addition, according to the present invention, by using and analyzing the position and speed of a pedestrian and the position and speed of a detected vehicle to predict a collision between a vehicle and a pedestrian, and at the same time predicting a collision, the information on the pedestrian is displayed to the outside to safely walk the pedestrian. Can be induced.

In addition, according to the present invention, the display means is configured to display the vehicle number as well as the vehicle speed of the sensing vehicle, thereby maximizing the effect of giving attention to the speeding to the vehicle driver, thereby preventing traffic accidents more effectively.

In addition, according to the present invention, the display means outputs information in a color corresponding to whether or not the detection vehicle is interrupted through the display information transmitted from the controller, thereby increasing visibility and visibility, so that the driver can recognize his / her speed quickly and accurately in the driving state. .

In addition, according to the present invention, when a plurality of vehicles are detected during a preset set period (Δt), the controller's display target determining unit calculates the level of control of each of the detected vehicles, and then determines the display target according to the calculated level of control. By being configured to do so, even if a plurality of detected vehicles are detected, it is possible to select the vehicle in need of alertness and provide information.

FIG. 1 is a configuration diagram showing a hybrid speed warning and speed control system disclosed in Korean Registered Patent No. 1744648 (invention name: hybrid speed speed warning and speed control system capable of speed violation control in school hours in a child protection zone).
2 is a block diagram showing a child protection zone enforcement system that is an embodiment of the present invention.
3 is an exemplary view of FIG. 2.
FIG. 4 is a block diagram showing a controller of the vehicle detection camera of FIG. 2.
5 is a block diagram showing the controller of FIG. 2.
6 is a block diagram showing a collision prediction unit of FIG. 5.
7 is a block diagram illustrating a display target determining unit of FIG. 5.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

2 is a block diagram showing a child protection area enforcement system that is an embodiment of the present invention, and FIG. 3 is an exemplary view of FIG. 2.

The child protection zone enforcement system 1, which is an embodiment of the present invention, is installed adjacent to the crosswalk (C) of the child protection zone, as shown in FIGS. 2 and 3, and warns under the control of the controller 3 described below. A speaker 2 for outputting an acoustic broadcast, a radar sensor 4 for detecting pedestrians in a pedestrian crossing (C), and an area spaced apart from the pedestrian crossing (C) in the vehicle entrance direction (hereinafter referred to as a shooting area) (S Vehicle photographing camera (5) for photographing a vehicle driving the corresponding photographing area (S) by photographing), monitoring camera (6) photographing pedestrian crossing (C), and pedestrian crossing (C) and photographing area (S) Display installed to receive and display display information such as vehicle number, vehicle speed, speeding, pedestrian detection status, warning phrases, etc. of a traveling vehicle installed on a shoulder or a structure between (S) Means (7), road signs (8) are installed to be buried on both sides of the crosswalk (C) and flashing under the control of the controller (3), and the configuration means (4), (5), (6), Vehicles from controllers (3-1), ..., (3-N) that manage and control (7), (8), and controllers (3-1), ..., (3-N) The control center server (9), the control center server () and the controller (3-1), ..., (3) that receive and receive detection information, pedestrian detection information, enforcement information, monitoring images, and surveillance images It consists of a communication network 10 that provides a data movement path between -N).

At this time, although not shown in FIGS. 2 and 3, the controller 3 is wired with a radar sensor 4, a camera 5 for vehicle detection, a camera 6 for monitoring, a display means 7 and road markers 8 It is configured to transmit and receive data via cable or wireless communication.

The communication network 10 supports data communication between the control center server 9 and the controllers 3-1, ..., (3-N), and specifically, a wired / wireless communication network such as a wide area network (WAN). , It may be composed of a mobile communication network.

The speaker 2 is installed adjacent to the pedestrian crossing C and outputs a pre-made warning sound broadcast under the control of the controller 3.

The radar sensor 4 receives a reflected signal after transmitting a radar signal with a crosswalk (C).

In addition, the radar sensor 4 transmits the transmitted and received radar signal information to the controller 3. At this time, the controller 3 analyzes radar signal information received from the radar sensor 4 to detect pedestrians in the pedestrian crossing (C).

The vehicle detection camera 5 is installed on a structure such as a road shoulder or a gantry at a point spaced apart from the pedestrian crossing (C) in the vehicle entry direction, and acquires an image by photographing a preset shooting area (S), In detail, it is preferable that the vehicle is installed obliquely on the structure to enable recognition of the license plate in front of the vehicle.

In addition, the vehicle detection camera 5 is preferably installed at a point spaced from 50 to 60m forward from the display means (7).

In addition, the camera 5 for vehicle detection will be described later to analyze the acquired image and perform calculation processing such as vehicle detection, calculation of vehicle speed of the detected vehicle, detection of the detected vehicle, lane position detection of the controlled vehicle, and identification of the vehicle number. And the controller 50 of FIG. 4.

FIG. 4 is a block diagram showing a controller of the vehicle detection camera of FIG. 2.

The controller 50, as shown in Figure 4, the control module 51, the memory 52, the communication interface module 53, the image analysis module 54, the vehicle detection module 55, the lane position detection module (56), vehicle number recognition module (57), vehicle speed calculation module (58), intermittent decision module (59), detection information generation module (60), and enforcement information generation module (61).

The control module 51 is an operating system (OS) of the controller 50 of the vehicle detection camera 5, and the control objects 51, 52, 53, 54, 55, 56 ), (57), (58), (59), (60), (61) are managed and controlled.

In addition, the control module 51 inputs the image obtained by the photographing of the vehicle detection camera 5 to the image analysis module 54.

In addition, the control module 51 controls the communication interface module 53 so that the detection information generated by the detection information generation module 60 is transmitted to the controller 3.

In addition, the control module 51 controls the communication interface module 53 so that the detection information generated by the intermittent information generation module 61 is transmitted to the controller 3.

In the memory 52, location information and pixel location information of the photographing area S, and location information and pixel location information of each lane are preset and stored.

In addition, an image analysis algorithm for detecting a vehicle object from an image is preset and stored in the memory 52.

In addition, a number recognition algorithm for recognizing the vehicle number by analyzing the extracted vehicle number plate after extracting the vehicle number plate from the vehicle object image is preset in the memory 52 and stored.

The communication interface module 53 transmits and receives data to and from the controller 3.

The image analysis module 54 analyzes the image obtained by the photographing of the vehicle detection camera 5 using an image analysis algorithm stored in the memory 52.

The vehicle detection module 55 uses the data analyzed by the image analysis module 54 to detect the driving vehicle in the photographing area S.

The lane position detection module 56 detects the lane position of the detected vehicle detected by the vehicle detection module 55.

The vehicle number recognition module 57 recognizes the vehicle number of the detected vehicle using a preset number recognition algorithm.

The vehicle speed calculation module 58 calculates the speed of the sensing vehicle. At this time, since the technology and method for calculating the speed of the detected vehicle through image analysis is a commonly used technology, detailed description will be omitted.

If the vehicle speed V calculated by the vehicle speed calculation module 58 is greater than or equal to the preset limit speed V ', the intermittent determination module 59 determines the detected vehicle as the intermittent vehicle.

The detection information generation module 60 is executed when the detection vehicle is determined to be the normal vehicle rather than the intermittent vehicle by the intermittent or non-interruption determination module 59, and the vehicle speed, detection time, lane position, vehicle number and normal vehicle of the detected vehicle Produces detection information including content indicating that.

The intermittent information generation module 61 is executed when the detected vehicle is determined to be the intermittent vehicle by the intermittent determination module 59, and indicates that the vehicle speed, detection time, lane position, vehicle number and intermittent vehicle of the intermittent vehicle Generates containment information.

Returning to FIGS. 2 and 3 again, looking at the monitoring camera 6, the monitoring camera 6 photographs the crosswalk (C) and transmits the obtained monitoring image to the controller (3).

The display means 7 are installed at a point spaced forward from the pedestrian crossing C, specifically, at a road shoulder between the pedestrian crossing C and the camera 5 for vehicle detection.

In addition, when the display information is received from the controller 3, the display means 7 displays the received display information.

At this time, the display information includes content indicating whether or not the detection vehicle is subject to enforcement, the speed of the detection vehicle, the vehicle number, and whether a pedestrian is present in the pedestrian crossing.

In addition, the display means 7 increases display visibility by displaying display information in a preset first color when the detected vehicle is an intermittent vehicle, and displaying display information in a preset second color when the detected vehicle is a normal vehicle, thereby increasing visibility. Prevent accidents more effectively.

Road sign bottles (8) are installed to be embedded in the road with a gap on both sides of the crosswalk (C), and blinks according to the lighting data transmitted from the controller (3).

At this time, the controller 3 analyzes the radar signal transmitted and received by the radar sensor 4 and controls the road sign bottles 8 to flash in red (red) when a pedestrian in the pedestrian crossing C is detected. Make it possible to immediately recognize that pedestrians in a pedestrian crossing (C) are walking at a distance.

5 is a block diagram showing the controller of FIG. 2.

The controller 3 includes a control unit 30, a memory 31, a communication interface unit 32, a radar signal analysis unit 33, a pedestrian detection unit 34, a collision prediction unit 35, a lighting data generation unit ( 36), a warning sound output control unit 37, an input unit 38, a search unit 39, a display target determining unit 40, and a display information generating unit 41.

The control unit 30 is an operating system (OS) of the controller 3, and control targets 31, 32, 33, 34, 35, 36, 37, 38 , (39), (40), and (41) are managed and controlled.

In addition, when receiving the detection information or the enforcement information from the vehicle detection camera 5, the control unit 30 inputs the received detection information or enforcement information to the input unit 38.

In addition, when receiving radar signal information transmitted and received from the radar sensor 4, the control unit 30 inputs the received radar signal information to the radar signal analysis unit 33.

In addition, when the lighting data is generated by the lighting data generation unit 36, the control unit 30 transmits the lighting data to the road marking bottles 8 to control the blinking of the road marking bottles 8.

In addition, when the warning sound control signal is generated by the warning sound output control unit 37, the control unit 30 transmits the generated warning sound control signal to the speaker 2.

In addition, when the display information is generated by the display information generation unit 41, the control unit 30 transmits the generated display information to the display means 7.

In the memory 31, pedestrian information detected by the pedestrian detection unit 34 and detection information or enforcement information transmitted from the vehicle detection camera 5 are stored.

In addition, the monitoring image received from the camera 6 for monitoring is stored in the memory 31.

The communication interface unit 32 transmits and receives data to and from the traffic control server 5.

The radar signal analysis unit 33 analyzes the transmitted and received radar signal information received from the radar sensor 4.

The pedestrian detection unit 34 uses the data analyzed by the radar signal analysis unit 33 to detect whether there is a pedestrian in the crosswalk (C).

At this time, when the pedestrian is detected by the pedestrian detection unit 34, the control unit 30 inputs the pedestrian detection information to the collision prediction unit 35, the lighting data generation unit 36, and the display information generation unit 41.

6 is a block diagram showing a collision prediction unit of FIG. 5.

The collision prediction unit 35 is executed under the control of the control unit 30 when a pedestrian is detected by the pedestrian detection unit 34.

In addition, the collision prediction unit 35, as shown in Figure 6, the intermittent vehicle search module 351, the first elapsed time prediction module 352, the second elapsed time prediction module 353, collision prediction module ( 354).

The intermittent vehicle search module 351 searches whether the intermittent vehicle has been detected from the time the pedestrian is detected.

Also, if the intermittent vehicle is not detected, the intermittent vehicle search module 351 does not perform a separate operation. If the intermittent vehicle is detected, the first elapsed time prediction module 352 and the second elapsed time prediction module ( 353).

The first elapsed time prediction module 352 is executed when the intermittent vehicle is detected by the intermittent vehicle search module 351, and tracks the pedestrian's trajectory detected through radar signal analysis, thereby helping the pedestrian's walking speed, walking direction, and pedestrian Detects location and pedestrian distance.

In addition, the first elapsed time prediction module 352 calculates the first elapsed time T1, which is a predicted time required for the pedestrian to cross the pedestrian crossing (C), by utilizing the pedestrian's remaining distance and walking speed.

The second elapsed time prediction module 353 is executed when the intermittent vehicle is detected by the intermittent vehicle search module 351, and detects the vehicle speed, the current position of the intermittent vehicle, and the remaining distance to the pedestrian crossing.

In addition, the second elapsed time prediction module 353 uses the vehicle speed of the intermittent vehicle and the remaining distance to the crosswalk to determine the second elapsed time (T2), which is the predicted time required for the intermittent vehicle to pass the crosswalk (C). Calculate.

The collision prediction module 354 calculates the first elapsed time T1 calculated by the first elapsed time prediction module 352 and the second elapsed time T2 calculated by the second elapsed time prediction module 353. In comparison, if the first elapsed time (T1) is faster than the second elapsed time (T2), it is predicted that no collision will occur, but if the first elapsed time (T1) is slower than the second elapsed time (T2), the collision Predict that an accident may occur.

At this time, when the collision accident is predicted by the collision prediction module 354, the controller 30 executes the warning sound output controller 37.

When the pedestrian is detected by the pedestrian detection unit 34, the lighting data generation unit 36 generates lighting data for lighting the road sign bottles 8 with a preset first color (red), and the pedestrian detection unit 34 If no pedestrian is detected, lighting data for lighting the road sign bottles 8 with a preset second color (green) is generated.

At this time, the lighting data generated by the lighting data generation unit 36 is transmitted to the road sign bottles 8 under the control of the control unit 30, so that the road sign bottles 8 are crosswalk (C) by the radar sensor 4 When my pedestrian is detected, it blinks in red to allow the driver to immediately recognize the presence of the pedestrian even at a long distance, thereby effectively reducing traffic accidents in the child protection area.

The warning sound output control unit 37 is executed when it is determined that the collision is predicted by the collision prediction unit 35, and generates a warning sound control signal for outputting a preset warning sound.

At this time, the warning sound control signal generated by the warning sound output control unit 37 is transmitted to the speaker 2 under the control of the control unit 30, and when the speaker 2 receives the warning sound control signal, the previously produced warning By outputting the acoustic broadcast, it is possible for a pedestrian to induce a quick response by recognizing a collision accident in advance.

The input unit 38 receives detection information or control information transmitted from the vehicle detection camera 5.

The search unit 39 searches whether or not detection information or control information has been transmitted for a predetermined set period (△ t) from the input time, which is the time when the detection information or control information is input through the input unit 38, and is detected. The search data is input to the display target determining unit 40. At this time, the set period (Δt) represents the minimum value of the time required for the vehicle driver to read the information of the display means 7.

For example, when the set period (△ t) is '3 seconds', when the A detection vehicle is detected, and after 2 seconds, the B detection vehicle is detected, the search unit 33 detects two vehicles during the set period It detects that it has been detected.

7 is a block diagram illustrating a display target determining unit of FIG. 5.

As shown in FIG. 7, the display target determination unit 40 includes a comparison module 401, an intermittent information calculation module 402, and a display target determination module 403.

The comparison module 401 utilizes and analyzes the search data detected by the search data input module 351, and when a detection vehicle is detected during a set period (△ t), the corresponding detection vehicle is displayed on the determination module 403 ).

In addition, the comparison module 401 utilizes and analyzes the search data detected by the search data input module 351, and when it is determined that two or more detection vehicles have been detected during the set period (△ t), the intermittent accuracy calculation module 402 ).

The intermittent information calculation module 402 operates when two or more detection vehicles are detected during the set period Δt by the comparison module 401.

In addition, the intermittence accuracy calculation module 402 calculates intermittent information that is inversely proportional to the difference value from the speed limit when all the detected vehicles are normal vehicles. That is, the intermittence degree calculation module 402 calculates the intermittent degree of the vehicle with the smallest speed and difference value among the normal vehicles, and the intermittent degree of the vehicle with the largest limit speed and difference values among the normal vehicles. Calculate.

In addition, the intermittent accuracy calculation module 402 calculates the highest level of intermittence of the intermittent vehicle when the intermittent vehicle is one of the detected vehicles. For example, when only one of the sensed vehicles is the intermittent vehicle, the intermittence accuracy calculation module 402 calculates the intermittence degree of the intermittent vehicle the highest.

In addition, the intermittent information calculation module 402 3) when there are two or more intermittent vehicles among the detected vehicles, the normal vehicles are excluded, and then the intermittent vehicles are calculated with an intermittent degree proportional to the difference value from the speed limit. That is, the intermittent accuracy calculation module 402 excludes normal vehicles from among the detected vehicles, calculates the intermittent degree of the intermittent vehicle having the largest speed limit and difference value among the intermittent vehicles, and the intermittent vehicle with the limited speed. The intermittence degree of the intermittent vehicle with the smallest difference is calculated lowest.

The display target determination module 403 1) when a detection vehicle is detected during the set period (△ t) by the comparison module 402, determines the corresponding detection vehicle as a display target, and 2) the set period (△ t) ) Among the sensed vehicles detected during the operation, the detection vehicle having the highest degree of control is determined by the control module 402.

At this time, the control unit 30 inputs vehicle information or control information on the display target determined by the display target determining module 403 to the display information generating unit 41.

The display information generating unit 41 generates display information including color information according to the vehicle speed, vehicle number, whether or not the contents of the control and the contents of the control of the detected vehicle determined as the display target by the display target determination module 403.

At this time, the generated display information is transmitted to the display means 7.

As such, the child protection zone enforcement system 1, which is an embodiment of the present invention, detects a pedestrian in a pedestrian crossing using a radar sensor and displays information indicating that the pedestrian is walking through display means and road signs when detecting a pedestrian. By doing so, the driver can immediately recognize this in advance and effectively prevent an accident.

In addition, the child protection zone enforcement system 1 of the present invention predicts the collision of a vehicle and a pedestrian by using and analyzing the location and speed of a pedestrian and the location and speed of a detected vehicle, and at the same time, when the collision is predicted, information about this is external By expressing as, it is possible to induce pedestrians to walk safely.

In addition, the child protection zone enforcement system (1) of the present invention is configured to display the vehicle number as well as the vehicle speed of the sensing vehicle, thereby maximizing the effect of giving the vehicle driver a sense of overspeed, further increasing traffic accidents. It can be effectively prevented.

In addition, the child protection zone enforcement system 1 of the present invention increases the visibility and visibility by outputting information in a color corresponding to whether or not the detection vehicle is interrupted through the display information transmitted from the controller by the display means, so that the driver can quickly and accurately in the driving state. You can recognize your speed.

In addition, the child protection zone enforcement system (1) of the present invention is calculated when a plurality of vehicles are detected during a predetermined set period (Δt), and after the controller determines a target for display of each of the detected vehicles. Since it is configured to determine the display target according to the level of control, it is possible to provide information by selecting a vehicle in need of alertness among a plurality of detected vehicles.

1: Child protection zone enforcement system 2: Speaker
3: Controller 4: Radar sensor 5: Vehicle detection camera
6: Monitoring camera 7: Display means 8: Road markers
9: Control center server 10: Communication network
30: control unit 31: memory 32: communication interface unit
33: radar signal analysis unit 34: pedestrian detection unit 35: collision prediction unit
36: lighting data generation unit 37: warning sound output control unit
38: input unit 39: search unit
40: display target decision unit
41: display information generation unit

Claims (6)

A radar sensor for detecting pedestrians on a pedestrian crossing (C);
It is installed at a point spaced forward from the pedestrian crossing (C) to acquire an image by capturing a preset shooting area (S), and after analyzing the acquired image, it detects the speed (v) and vehicle number of the detected vehicle. , It compares the detected vehicle speed (v) with a preset speed limit (v ') to determine whether the detected vehicle is an intermittent vehicle, and when the detected vehicle is a normal vehicle rather than an intermittent vehicle, the vehicle speed (v), vehicle number And a detection camera including detection information including information indicating that the vehicle is a normal vehicle, and when the detection vehicle is an intermittent vehicle, vehicle speed (v), vehicle number, and vehicle detection camera for generating intermittent information including information indicating that the vehicle is an intermittent vehicle;
By analyzing the radar signal transmitted and received by the radar sensor, the pedestrian in the pedestrian crossing (C) is detected, and when the detection information or the enforcement information is transmitted from the vehicle detection camera, the vehicle speed of the detection vehicle or the enforcement vehicle (v ), A controller that generates display information including a vehicle number, information on whether to control the traffic, and presence / absence of pedestrians;
It is installed between the vehicle detection camera and the pedestrian crossing, and includes display means for displaying display information transmitted from the controller,
The display means in response to the information on whether or not the display information transmitted from the controller is intermittent in the control system for displaying information about the normal vehicle and the intermittent vehicle differently in a predetermined color,
The controller
A search unit for searching whether or not other detection information or enforcement information has been received from the vehicle detection camera during a preset set period (Δt) from an input time point at which the detection information is transmitted from the vehicle detection camera;
When no other vehicle information or intermittent information is received during the set period (△ t) by the search unit, a display target is determined as a corresponding sensing vehicle, and other vehicles during the set period (△ t) are determined by the search unit. When receiving information or control information, after calculating the level of control of each of the detected vehicles, a display target determining unit for determining the detection vehicle having the highest level of control as a display target;
A display information generation unit that generates display information according to a sensing vehicle determined as a display target by the display target determination unit;
And a control unit configured to transmit display information generated by the display information generation unit to the display means,
The intermittent system further includes at least one speaker installed adjacent to the crosswalk (C),
The controller further includes a collision prediction unit that is executed when a pedestrian in the pedestrian crossing (C) is detected,
The collision prediction unit
An intermittent vehicle search module that searches whether an intermittent vehicle is detected from the time the pedestrian is detected;
It is executed when the intermittent vehicle is detected by the intermittent vehicle search module, and tracks the pedestrian's trajectory detected by analyzing the radar signal transmitted and received by the radar sensor, and the pedestrian's walking speed, walking direction, pedestrian position, and pedestrian remaining distance A first elapsed time prediction module that detects and calculates a first elapsed time (T1) which is a predicted time required for a pedestrian to cross a pedestrian crossing (C) by using the pedestrian's remaining distance and walking speed;
Executed when the intermittent vehicle is detected by the intermittent vehicle search module, detects the vehicle speed, the current position of the intermittent vehicle, and the remaining distance to the pedestrian crossing, and utilizes the vehicle speed of the intermittent vehicle and the residual distance to the pedestrian crossing A second elapsed time prediction module for calculating a second elapsed time (T2) which is a predicted time required for the intermittent vehicle to pass the crosswalk (C);
The first elapsed time T1 calculated by the first elapsed time prediction module is compared with the second elapsed time T2 calculated by the second elapsed time prediction module, and if the first elapsed time T1 is It is predicted that collision accident will not occur if it is faster than the second elapsed time (T2), but if the first elapsed time (T1) is slower than the second elapsed time (T2), a collision prediction module that predicts that a collision may occur Including more,
When the controller is predicted that a collision may occur by the collision prediction module, the controller controls the speaker to output a warning sound broadcast preset to the speaker. The method according to claim 1, wherein the intermittent system further comprises road markers installed to be buried in the road adjacent to the pedestrian crossing (C),
The controller
When a pedestrian in the pedestrian crossing (C) is detected, the road markers flash in a first color, and when the pedestrian in the pedestrian crossing (C) is not detected, the road markers are in a preset second color. Control system, characterized in that to control the road signs to blink. delete The method according to claim 1 or 2, wherein the display target determining unit
A comparison module that compares how many detected vehicles are detected during the set period (Δt) by utilizing and analyzing the search data detected by the search unit;
An intermittent accuracy calculation module that operates when two or more detected vehicles are detected during the set period (Δt) by the comparison module and calculates the intermittent accuracy of each of the detected vehicles;
When one detection vehicle is detected during the set period (△ t) by the comparison module, the corresponding detection vehicle is determined as a display target, but two or more detection vehicles are detected during the set period (△ t) by the comparison module. When it is detected, and includes a display target determination module for determining the vehicle having the highest level of intermittence calculated by the intermittence accuracy calculation module as a display target,
The intermittent accuracy calculation module
1) When all the detected vehicles are normal vehicles, calculate the degree of control that is inversely proportional to the difference from the speed limit. 2) When one of the detected vehicles is one of the detected vehicles, calculate the highest level of control of the control vehicle. , 3) When two or more intermittent vehicles are among the intermittent vehicles, the normal vehicles are excluded, and the intermittent system is characterized in that the intermittent vehicles are calculated with a degree of regulation proportional to the difference value from the speed limit. delete 5. The enforcement system according to claim 4, wherein the display means displays information about the normal vehicle and the intermittent vehicle differently in preset colors in response to the intermittent information of the display information transmitted from the controller.

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