KR20230170472A - Intelligent Traffic Variable Message Sign System - Google Patents

Abstract

The present invention is installed in plural numbers at intervals along the road, and communicates the location of the sign and information through mutual communication, and outputs information messages transmitted through a remote management module by reflecting the location to provide various traffic and environment-related information. It relates to an intelligent traffic information display system that supports the transmission of.

Description

Intelligent Traffic Variable Message Sign System}

The present invention relates to traffic signs. Specifically, a plurality of traffic signs are installed at intervals along the road, and information is communicated through mutual communication to convey the location of the sign, and the information message transmitted through a remote management module is reflected in the location. This relates to an intelligent traffic information display system that supports the printing and transmission of various traffic and environment-related information.

In general, signs that provide information to drivers on the road are installed for the purpose of delivering traffic information signs, milestone signs, weather information status, air pollution status, traffic accident status, municipal administration information, and advertising, depending on the type of information. .

Since these signs usually display a single piece of information on one board, the number of signs installed as many as the number of types of information to be provided to the supporting structures on the road not only damages the aesthetics, but also reduces the efficiency and economics of being installed and managed by related organizations. There was a problem with falling.

Accordingly, in some sections, various information such as traffic, road, weather conditions, and construction control were output through electronic signs called VMS (variable message signs).

However, the conventional VMS can only provide information in real time with characters or simple shapes and three limited colors in response to variable information, but it still has limitations in outputting various information with only limited characters, shapes, and colors. , A display billboard capable of outputting color video has been developed, but there are difficulties with the system to provide variable information that reflects traffic conditions for each installation location.

Republic of Korea Patent Publication No. 10-2018-0033829 (2018.04.04)

The present invention was created in response to the above-mentioned needs. The purpose of the present invention is to transmit the location of signs and various traffic information through mutual communication by installing them along the road, and to collect information transmitted through a remote management module and on-site. The goal is to provide an intelligent traffic information display system that outputs a message reflecting the information provided, reflecting the location.

For the above purpose, the present invention includes an information collection module including a radar sensor that collects vehicle information including vehicle traffic and speed; A display unit that outputs the input information so that the vehicle driver can check it, a communication unit that provides location information and identification codes and performs communication with the management module, and a linkage unit that supports relay transmission and output of information between adjacent sign modules. A plurality of sign modules are provided and installed at set intervals; A registration department that registers and manages sign modules by calling sign modules installed on site, a location management department that analyzes the location information of registered sign modules and sets information to respond to the location, and determines vehicle speed and congestion level on the road, accidents and weather. and a management module including an information management unit that collects and manages information including road conditions and transmits the information to the selected sign module in connection with the location management unit; It is characterized by consisting of.

At this time, the information collection module further includes a camera that photographs vehicles passing on the road, and an image analysis unit that analyzes images captured through the camera to recognize the lane and the vehicle's license plate and vehicle type, and the management module, It may further include a signal interlocking support unit that generates and outputs waiting information for each lane according to the recognition results of the image analysis unit, and an enforcement support unit that generates speed information including the speed, license plate, and vehicle type of the offending vehicle.

In addition, the information collection module includes an interlocking module that receives video and enforcement information in conjunction with pre-installed speed cameras and security cameras; It may further include.

In addition, the sign module may further include an information transmission unit that transmits information transmitted from the information management unit so that the information can be received through a terminal installed in a passing vehicle.

The present invention delivers information through signs installed at intervals along the road, effectively delivering information to drivers that can be easily overlooked while driving, and delivering customized information in response to changing situations based on the location and time of the sign. possible.

In particular, by using radar sensors, it is possible to display accurate information by location by identifying vehicle traffic volume, average speed, and accident occurrence situations, and supports signal linkage, speed control, and variable speed limits through waiting status or left turn response for each lane. This allows for effective location-based crackdown.

In addition, safe driving tailored to road conditions can be supported by transmitting sign information to a communication terminal to assist the operation of vehicles capable of receiving information, such as self-driving vehicles.

1 is a conceptual diagram of the present invention;
Figure 2 is a block diagram showing the configuration and connection relationship according to an embodiment of the present invention;
3 is a schematic diagram according to an embodiment of the present invention;
Figure 4 is a schematic diagram showing installation on a road according to an embodiment of the present invention;
Figure 5 is a schematic diagram applied to a bus stop according to another embodiment of the present invention;
Figure 6 is a schematic diagram showing a sign module according to another embodiment of the present invention.

Hereinafter, the configuration of the intelligent traffic information display system of the present invention will be described in detail with reference to the attached drawings.

1 is a conceptual diagram of the present invention. In addition to the role of traffic safety signs that provide existing fixed information, the present invention includes a plurality of sign modules installed at a set distance to display various traffic and road conditions that may affect driving conditions. It is output through (2) so that the driver can clearly recognize it, and the information output through the remote management module (3) is managed, but customized information can be output based on the location and time information where the sign module is installed. It is composed.

In the case of the sign module (2), it includes both the fixed type, whose position is fixed at the time of installation, and the mobile type that can be moved or removed by being mainly installed at construction sites and temporary roads, and corresponds to the server that manages the sign module (2). It is registered and managed in the management module (3).

In addition, in addition to the information collection module that actively collects information on vehicles passing on the road, it can provide various traffic information and support crackdown and guidance tasks by linking with existing speed cameras, crime prevention CCTV, and signal control systems.

Figure 2 is a block diagram showing the configuration and connection relationship according to an embodiment of the present invention, Figure 3 is a schematic diagram according to an embodiment of the present invention, and Figure 4 is a schematic diagram showing installation on a road according to an embodiment of the present invention. , The main components for the aforementioned functions include an information collection module (1), a sign module (2), and a management module (3).

The information collection module 1 is configured to collect road conditions and is basically equipped with a radar sensor 11 that collects vehicle information including vehicle traffic and speed.

Since the radar sensor 11 detects vehicles approaching in the up and down directions, it is installed on various structures installed on the road to detect vehicles toward the up and down lanes, respectively, and transmits radio waves to the vehicle and reflects them from the vehicle. By receiving radio waves, it is possible to determine not only whether a vehicle is approaching and its location, but also its speed.

In the present invention, the vehicle flow on the road collected and analyzed through the radar sensor 11 can be provided as main information, but in order to identify more specific road conditions and provide information, the information collection module 1 uses a camera ( 12), an image analysis unit 13, and an environmental sensor 14 may be further included.

The camera 12 is installed to capture the front of a moving vehicle, that is, the entire appearance and license plate of a moving vehicle, like a conventional enforcement camera, and the image analysis unit 13 analyzes the image captured through the camera and It is configured to recognize lanes, vehicle license plates, and vehicle models. Through this, it is possible to remotely identify specific situations such as accidents that occur on the road, as well as crackdown on various illegal activities and crime prevention functions.

The environmental sensor 14 may basically consist of a sensor that measures temperature and humidity, as well as a sensor that can measure various weather conditions closely related to road conditions. Through this, the possibility of road icing can be easily and accurately predicted depending on clear weather, rainy conditions, temperature and humidity, and a separate sensor that can measure snow or icing conditions on the road can be included.

In this way, the information collection module (1) may be configured with the camera (12) and the image analysis unit (13) integrated into the module, but is an interlocking module that receives video and enforcement information in conjunction with the already installed speed camera and security camera. By providing (4), video collection and analysis of roads and passing vehicles can be performed by linking with cameras and video analysis departments for crackdown or crime prevention purposes.

The sign module (2) is designed to overcome the limitations of existing fixed traffic information signs and deliver information through various variable messages. It is composed of a display unit (21), a communication unit (22), and the information provided. For diversity, a connection unit 23, an information transmission unit 24, and an audio output unit 25 may be provided. At this time, as shown in the attached drawing, the sign module 2 is configured together with the fixed panel 26 corresponding to the existing traffic information sign, so that detailed information can be delivered through a message along with basic fixed traffic information.

To this end, the display unit 21 outputs the input information so that the vehicle driver can check it, and is especially composed of an LED panel that can output messages or patterns in variable character forms, providing various useful messages. Expression can occur. In particular, in the present invention, by managing and transmitting this information through the remote management module (3), information is output according to the location where the sign module (2) is installed, rather than uniform information, and a plurality of sign modules are installed along the road. (2) is displayed at set intervals to ensure that important information is not overlooked while driving and that accurate delivery is made based on the crisis.

For this purpose, each sign module (2) is given installed location information and an identification code, and includes a communication unit (22) that performs communication with the management module, and a linkage unit (23) that supports relay transmission and output of information between adjacent sign modules. is provided.

The location information can be directly input as information such as coordinates on GIS, but it can also be acquired through satellite communication when installing a sign module with built-in GPS, etc. In addition, the communication unit may be configured to utilize various established communication networks, including commercial communication means such as 4G, 5G, and Internet networks, and may be configured to enable short-distance wireless communication such as Wi-Fi and Bluetooth.

The linkage unit 23 supports mutual communication between a plurality of sign modules and supports relay transmission of information with sign modules located at the front and rear. For example, when a traffic accident is recognized through the above information collection module, information related to the accident situation is relayed through the sign module located at the rear, so that the driver can recognize the situation early even from a relatively long distance and take measures such as taking a detour. is possible.

The information transmission unit 24 transmits the information transmitted from the information management unit 33 provided in the management module 3 so that it can be received through a terminal installed in a passing vehicle. The terminal may be a mobile phone carried by the driver or a navigation terminal installed in the vehicle, but it may also be an autonomous vehicle that is being researched and introduced in recent years, allowing the driver to effectively check the information output from the sign module inside the vehicle and take action. Support so you can do it.

In other words, a so-called communication type sign service can be provided that provides sign information for self-driving vehicles, etc. to recognize road conditions while driving through a navigation system, service terminal, or mobile phone application mounted on the vehicle. For this purpose, the LTE CAT M1 module is installed and mounted in the sign module (1), and sign location and sign settings are performed through API for smooth interworking with navigation and apps, and sign module information is updated through the management module (3). Ensure management and real-time vehicle sign services are provided.

The sound output unit 25 is a speaker for outputting information output through the sign module through sound, that is, voice. As will be described later, the present invention is used for pedestrians located on the sidewalk rather than the driver of the vehicle in operation, or on the road where the bus stop is located. When reflected, it allows people waiting on the platform to effectively perceive the information.

The above-mentioned information collection module (1) and sign module (2) are installed on site and are installed in various structures installed on the road, and are especially protected by being installed in the control panel for these as built into the enclosure (5).

The enclosure (5) is made of a highly durable material and has a waterproof structure to protect the internal structure. The power source includes commercial power, a solar cell (51), and a battery (52) charged through the solar cell (51). It is desirable to configure it so that power can be stored for about 5 days.

The management module (3) is a server for remotely managing the installed sign module (2) and output information, and its detailed composition includes a registration unit (31), a location management unit (32), an information management unit (33), and a signal management unit (33). It is provided with an interlocking support unit (34) and an enforcement support unit (35).

The register 31 is configured to register and manage the sign module 2 by calling the sign module 2 installed in the field. According to the current law, the sign module (2) is usually operated and managed by the local government, and the management module (3) is operated by the responsible department of the local government, and management services can be provided through the sign prior permission system, etc. As mentioned earlier, the location information and identification number of the communication unit 22 of each sign module 2 are transmitted, and the exact location of the sign module 2 installed in connection with GIS and RTK is displayed on the management map (MAP). Registration and management are carried out.

In addition, when registering a new sign module, the information of the sign module in a nearby location can be reflected to review the mutual transfer of information and service linkage performance and redundancy, and service registration can be made according to the installation approval of the new sign module.

The location management unit 32 is configured to analyze the location information of the registered sign module and set the information to correspond to the location. It not only assigns the collected information to be output through the sign module at the corresponding location, but also moves to reflect the traffic volume. Information such as time can be differentiated and output by reflecting the location of the sign module. In particular, even if it is installed in a place where the speed limit in sections set by law, such as a child protection zone or a senior protection zone, varies, the information collection module (1) installed together reflects the location of children's educational facilities such as nearby schools and kindergartens. Through this, the speed limit and the passing speed of the vehicle collected from the vehicle can be output together with the speed limit to induce deceleration.

The information management department (33) collects and manages various information collected from the established traffic information system and the web, including information collection modules installed throughout the jurisdiction, especially vehicle speed and congestion level on the road, accidents, weather, and road conditions. Collects and manages information including and transmits the information to the selected sign module in connection with the location management unit 32. At this time, if the speed limit by time may vary in a specific speed limit zone, information related to the speed limit by time can also be input to support the display of the speed limit according to the current time and the output of information related to changes in the speed limit by time. For example, in child protection zones, the speed limit is lowered during children's school pick-up and drop-off hours or during the day to effectively prevent traffic accidents among children, but the speed limit is raised during times when children do not actually go out, such as late at night and early morning, to facilitate the smooth flow of vehicles. It can reflect policies such as helping.

The signal interlocking support unit 34 is configured to generate and output waiting information for each lane according to the recognition results of the image analysis unit 13. It transmits and receives control signals in conjunction with the traffic signal control system and actively controls the signals. In situations where traffic volume is imbalanced depending on direction, congestion in a specific direction can be resolved and overall smooth communication can be encouraged.

To this end, the signal interlocking support unit 34 is built and connected in the form of an option board to a traffic signal control system that can convert vehicle signals and pedestrian signals by program and manual operation, and receives control signals for operating the signal system, It may be configured to apply an external control signal to control it.

The enforcement support unit 35 is configured to generate speed information including the speed, license plate, and vehicle model of the offending vehicle. As the speed of the vehicle is detected through the radar sensor 11, it detects the speed of the vehicle exceeding the specified speed. By generating speeding information and outputting a warning message through the display unit 21, the driver is encouraged to recognize the speeding state and slow down. If the violation is severe, the information is transmitted to the relevant department to impose fines or fines. Ensure that action is taken.

In addition, as mentioned above, when the speed limit changes depending on the hour, the enforcement support unit 35 can reflect this and variably apply the speed limit for enforcement per hour.

In this way, through the management module (3), the LED layout of the sign module (1) is selected, design arrangement, movement registration of the installation point of the sign module (!), start-up and power management of the sign module (1), and location information display and monitoring. , Upload of sign output information, communication confirmation by linking sign module and mobile app, constant status check and maintenance management of sign module (1).

This invention supports safe driving by providing traffic information to drivers, but can also effectively protect pedestrians by linking it with the location of intersections or bus stops.

Figure 5 is a schematic diagram applied to a bus stop according to another embodiment of the present invention, showing how the present invention can promote the safety of pedestrians even before the bus arrives at the bus stop.

To this end, like the radar sensor 11 of the information collection module 1, a sensor 6 capable of recognizing pedestrians and approaching vehicles through a radar method is configured to effectively protect pedestrians at the bus stop or crosswalk shown above. can be achieved.

The sensor 6 is composed of a bollard shape and a block shape installed on the floor between the sidewalk and the road, and detects vehicles and pedestrians entering each. In particular, the sensor in the block shape detects existing sensors with a high error rate. Compared to camera or laser sensor methods, both sensitivity and insensitivity characteristics are good in recognizing people located across blocks, enabling accurate and error-free broadcasting, or voice guidance.

In response to this, the sound output unit 25 outputs sound signals related to pedestrian guidance and warnings, and in particular, information that guides people approaching the road to move back inward or enter the vehicle in conjunction with the sensitive element 6. is output as sound.

At this time, it is desirable to install the display unit 21 on the pedestrian side and the vehicle side respectively to output the vehicle speed and driver safety phrases on the vehicle side and pedestrian safety phrases on the pedestrian side.

Figure 6 is a schematic diagram showing the appearance of a sign module according to another embodiment of the present invention. The conventional so-called seagull sign for preventing accidents in places with a high risk of accidents, such as construction sites or curved sections, is replaced with a sign module according to the present invention. The replacement is shown.

In other words, since most accidents on curved roads are rollover accidents caused by speeding, the present invention plays a role in preventing speeding and accidents by warning of speeding vehicles before entering, and utilizes the radar sensor 11. Road conditions due to weather and climate change are actively communicated using the speed display and environmental sensor (14).

Basically, the speed limit information for the area is output along with the seagull sign indicating the curve section, and when the speed limit is exceeded, the color of the seagull sign and speed limit information changes, and a warning due to icing or speeding can be output. The attached drawing shows a display that is displayed in black in a normal state but changes to red when speeding is detected.

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

1: Information collection module 11: Radar sensor
12: Camera 13: Video analysis unit
14: Environmental sensor 2: Sign module
21: display unit 22: communication unit
23: Connection unit 24: Information transmission unit
25: sound output unit 26: fixed panel
3: Management module 31: Register
32: Location Management Department 33: Information Management Department
34: Signal Interlocking Support Department 35: Enforcement Support Department
4: Interlocking module 5: Enclosure
51: solar cell 52: battery
6: Sensitizer

Claims (4)

An information collection module (1) including a radar sensor (11) that collects vehicle information including vehicle traffic and speed;
A display unit 21 that outputs the input information so that the vehicle driver can check it, a communication unit 22 that is given location information and an identification code and performs communication with the management module 3, and information between adjacent sign modules. A plurality of sign modules (2) provided with a connection unit (23) that supports relay transmission and output, and installed at set intervals;
A registration unit 31 that registers and manages sign modules by calling up sign modules installed in the field, a location management unit 32 that analyzes the location information of the registered sign modules and sets the information to correspond to the location, and determines the vehicle speed and A management module (3) including an information management unit (33) that collects and manages information including congestion levels, accidents, weather, and road conditions, and transmits information to a selected sign module in connection with the location management unit; An intelligent traffic information display system comprising:
According to paragraph 1,
The information collection module (1) is,
It further includes a camera 12 that photographs vehicles passing on the road, and an image analysis unit 13 that analyzes images captured through the camera to recognize lanes, vehicle license plates, and vehicle models,
The management module (3) is,
A signal interlocking support unit 34 that generates and outputs waiting information for each lane according to the recognition results of the image analysis unit 13, and an enforcement support unit 35 that generates speed information including the speed, license plate, and vehicle type of the offending vehicle. An intelligent traffic information display system further comprising:
According to paragraph 2,
The information collection module (1) is,
An interlocking module (4) that receives video and enforcement information in conjunction with pre-installed speed cameras and security cameras; An intelligent traffic information display system further comprising:
According to paragraph 1,
The sign module (2) is,
An intelligent traffic information display system further comprising an information transmission unit 24 that transmits the information transmitted from the information management unit 33 so that the information can be received through a terminal installed in a passing vehicle.

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