KR20130086487A - Intelligent transport system and method for providing traffic information using the same - Google Patents

Abstract

PURPOSE: An intelligent transport system and a traffic information providing method using the same are provided to prevent traffic accidents by providing information and warning a driver by calculating safe speed and judging the generation of a traffic accident. CONSTITUTION: According to a corresponding intelligent transport system, a sensor unit (100) senses fog and icing, traffic accident and accident hazard. A sensor gateway (200) judges the generation of accident hazard on the ground of the sensor data by the sensor unit, and calculates safe speed according to the judgment result, and generates and transmits traffic information. A traffic control server (300) generates and transmits traffic condition information on the ground of the traffic information collected through the sensor gateway. [Reference numerals] (100) Sensor unit; (200) Sensor gateway; (300) Traffic control server; (AA) Communication network

Description

Intelligent Transport System and method for providing traffic information using the same

The present invention relates to a traffic control system, and more particularly, to collect traffic information such as road condition and weather information, traffic accident occurrence section, calculate safety speed using the collected traffic information, and generate traffic accident section. The present invention relates to an intelligent traffic system for guiding the traffic and a traffic information providing method using the same.

Along with the increase in the number of cars owned, the rate of traffic accidents is also increasing. Therefore, in order to prevent traffic accidents recently, the fog section and the icing section are analyzed in advance, and the road sign of the fog section and the icing section is installed on the road of the section to guide the danger section.

In addition, by installing a temperature sensor and a humidity sensor on the road to detect freezing, if the freezing is detected by spraying liquid calcium chloride to prevent freezing, it is possible to prevent traffic accidents.

However, since the fog section and freezing section signs do not reflect real-time road weather and are always displayed at the same location, it is impossible to predict the exact location of the fog and freezing section.

The present invention has been proposed to solve the problems of the prior art, by measuring the temperature and humidity in real time through a temperature and humidity sensor installed on the road to determine whether the fog and / or freezing occurs fog section and freezing section The purpose of the present invention is to provide an intelligent traffic system that performs a warning broadcast informing the driver, calculates and guides a safe speed, and provides a traffic information using the same.

Another object of the present invention is to provide an intelligent traffic system for determining whether a traffic accident has occurred by using an impact sensor and transmitting information related to the traffic accident, and a traffic information providing method using the same.

Another object of the present invention is to provide an intelligent transportation system for guiding the detected accident risk information to a running train when an accident hazard is detected at a railroad crossing and a traffic information providing method using the same.

In order to achieve the above object, the intelligent traffic system according to the present invention is a sensor unit for detecting fog and freezing, traffic accidents, accident risk, and fog and freezing, traffic accidents, accidents based on the sensor data by the sensor unit Traffic control for judging whether or not a risk has occurred, calculating safety speed according to the result of the determination, generating and transmitting traffic information, and generating and transmitting traffic situation information based on traffic information collected through the sensor gateway. Server 300.

In order to achieve another object of the present invention, the traffic information providing method using the intelligent traffic system according to the present invention measuring the temperature and humidity, and determining whether the fog and freezing based on the temperature and humidity; Calculating a safety speed according to the generation of fog and freezing; and guiding the calculated safety speed.

In addition, the traffic information providing method using the intelligent traffic system according to the present invention comprises the steps of measuring the impact level applied to the vehicle, determining the accident intensity according to the measured impact level, and if the accident intensity is determined Generating accident information and transmitting the accident information to the traffic control server.

In addition, the traffic information providing method using the intelligent traffic system according to the present invention comprises the steps of detecting an object on the track, and if the object is detected by generating a notification message notifying the risk of accidents and transmitting to the traffic control server, and The traffic control server includes a step of transmitting a notification message informing the risk of the accident to the running train.

As described above, the intelligent traffic system and the traffic information providing method using the same according to the present invention by measuring the temperature and humidity in real time through a temperature and humidity sensor installed on the road to determine whether the fog and / or freezing occurs A warning broadcast notifies the driver of the fog section and the freezing section, and calculates and guides the safety speed so that traffic accidents can be prevented in advance.

In addition, the present invention determines whether a traffic accident occurs by using a shock sensor and transmits the information related to the traffic accident, it can be guided to the vehicle passing through the traffic accident occurrence point to prevent the occurrence of additional accidents at the accident point in front of .

In addition, the present invention guides the detected accident risk information to a running train when an accident risk is detected at a railroad crossing, thereby preventing a second large accident.

1 is a block diagram showing an intelligent traffic system according to the present invention.
FIG. 2 is a block diagram of the sensor gateway shown in FIG. 1. FIG.
3 is a network diagram of an intelligent transportation system according to the present invention;
4 is a flowchart illustrating a safety speed guide method of an intelligent transportation system according to the present invention.
Figure 5 is an example showing a safety speed guide screen of the intelligent traffic system according to the present invention.
6 is a flowchart illustrating a traffic accident information transmission method according to the present invention.
7 is a flowchart illustrating a method for guiding railroad hazards due to a traffic accident according to the present invention.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing an intelligent traffic system according to the present invention, Figure 2 shows a block diagram of the sensor gateway 200 of FIG.

The intelligent traffic system includes a sensor unit 100, a sensor gateway 200, a traffic control server 300, and the like.

The sensor unit 100 includes a plurality of sensors such as an impact sensor, a temperature sensor, a humidity sensor, a proximity sensor, and the like, and the sensors are installed at regular intervals on roads and railroad crossings, tracks, and vehicles.

The impact sensor is installed in the vehicle to detect a shock applied to the vehicle in the event of a traffic accident, and measure and output the impact level.

The temperature sensor and the humidity sensor are installed on the road and measure the current temperature and humidity, respectively, and output the measured temperature and humidity.

The proximity sensor is installed around a railroad crossing or track to detect whether there is an object on the track. For example, the proximity sensor outputs a notification signal notifying when an object is detected on the track while the breaker is lowered at the railroad crossing.

The sensor unit 100 may include a short range communication module (not shown) for transmitting sensor data measured by each sensor to the sensor gateway 200. The short range communication module may be implemented as Bluetooth, Zigbee, Wibree, or the like.

The sensor gateway 200 collects sensor data from the sensor unit 100 through a hierarchical sensor network (Ubiquitous Sensor Network, USN).

The sensor gateway 200 may include a short range communication unit 201, a communication unit 202, a radio frequency identification (RFID) tag 203, an RFID writer 204, an RFID reader 205, It includes a position acquisition unit 206, a power supply unit 207, an output unit 208, a storage unit 209, a processing unit 210.

The short range communication unit 201 performs short range wireless communication with the sensor unit 100.

The communication unit 202 performs wired and wireless communication with the traffic control server 300. The communication unit 202 is implemented by WLAN, Wibro, CDMA, Wifi, and the like.

The RFID tag 203 stores information such as traffic information guide information, vehicle information, driver information, safety speed, road surface conditions for each section, and at least one or more of sensor data. The RFID tag 203 is an electronic tag capable of proximity communication, and the RFID tag 203 may be changed to a near field communication technology such as near field communication (NFC).

The RFID writer 204 records the traffic information guide information, safety speed, fog and / or frost occurrence in the RFID tag 203. The RFID reader 205 reads the information stored in the RFID tag 203. In other words, the RFID writer 204 is an electronic tag recording unit for recording information in an electronic tag, and the RFID reader 205 is an electronic tag reading unit for reading data of the electronic tag.

The position acquisition unit 206 receives the current position information of the sensor gateway 200 from the satellite. The position acquisition unit 206 is implemented by a GPS (Global Positioning System) module.

The power supply unit 207 is responsible for supplying power required for the operation of the sensor gateway 200. The power supply unit 207 is implemented as a commercial power source or a battery.

The output unit 208 outputs the traffic information and the alarm provided by the traffic control server 300, and outputs the safe speed calculated by the processing unit 210 to be described later. The output unit 208 includes a display unit and a speaker.

The display unit is a sign indicating a general prescribed speed and a safe speed, and may be implemented as a display device such as a light emitting diode (LED) module and a liquid crystal display (LCD). The display unit is installed at a predetermined interval (for example, 10m) on the roadside, and includes an RFID tag 203.

The storage unit 209 is generated according to the sensor data transmitted from the sensor unit 100, the traffic information provided from the traffic control server 300, the safety speed calculation program, all programs, the operation of the sensor gateway 200. Various data and the like are stored.

The processor 210 determines the accident intensity according to the impact level if the impact level received from the impact sensor is greater than or equal to a threshold when a traffic accident occurs. In addition, the processor 210 generates a traffic accident information message and transmits it through the communication unit 202. The traffic accident information message includes driver information, vehicle information, accident status, accident date and time, location information, and the like.

The processor 210 determines whether fog and / or freezing occurs based on the measured temperature and the measured humidity transmitted from the temperature sensor and the humidity sensor, and calculates a safe speed according to the generated fog and / or freezing. In addition, the processor 210 records the alarm and / or the calculated safety speed according to the occurrence of fog and / or ice in the RFID tag 203 through the RFID writer 204 and through the communication unit 202. Transmit to the traffic control server 300. The tag data stored in the RFID tag 203 includes information such as a tag identifier, temperature, humidity, fog, time, terrain, road characteristics, and the like.

When the processor 210 detects an object on the track through the proximity sensor, the processor 210 transmits a warning message notifying the risk of accident on the track to the train in operation so that the engineer can prepare for the accident risk. The processor 210 may directly transmit a warning message to the vehicle or the train through the communication unit 202 or through the traffic control server 300.

The traffic control server 300 generates traffic situation information based on the road situation information collected by the sensor gateway 200, and transmits the generated traffic situation information to a vehicle driver, a police station, a train driver, a hospital, and the like. In addition, the traffic control server 300 stores the collected road situation information in a database.

The traffic control server 300 transmits the traffic situation information of the corresponding section in response to the request of the vehicle terminal to the vehicle terminal when the traffic condition information request is received from the sensor gateway 200 of the vehicle terminal.

3 shows a network configuration diagram of an intelligent transportation system according to the present invention.

As shown in FIG. 3, the sensor unit 100 is installed in a road, a vehicle, a railroad crossing, and detects a road situation, a traffic accident, a railroad crossing accident, and the like.

The sensor gateway 200 receives sensing data by the sensor unit 100 through a sensor network. The sensor gateway 200 is installed at predetermined intervals on the roadside, and guides road conditions and safety speeds for each section to vehicles and railways passing through the section. In addition, the sensor gateway 200 is installed in the vehicle, detects a traffic accident through an impact sensor installed in the vehicle, generates a traffic accident information message and transmits it to the traffic control server 300.

The traffic control server 300 generates traffic situation information based on various data collected by the sensor gateway 200 through a wired communication network and a wireless communication network, and forms the generated traffic situation information in the form of a text message. Send to the driver.

4 is a flowchart illustrating a safe speed guide method of an intelligent traffic system according to the present invention, and FIG. 5 is an example illustrating a safe speed guide screen of an intelligent traffic system according to the present invention.

Referring to FIG. 4, the sensor gateway 200 measures a current temperature and humidity through a temperature sensor and a humidity sensor installed on a road (S101).

In addition, the processor 210 of the sensor gateway 200 determines whether fog and / or freezing occur based on the measured temperature and humidity (S102).

If it is determined that the fog and / or freezing occurred, the processing unit 210 calculates a safety speed according to the fog and / or the degree of freezing (S103). In this case, the processor 210 may calculate the safety speed in consideration of weather information (heavy rain, heat wave, heavy snow, sunny day, rain, snow, etc.) and road conditions (road condition, road slope, sharp curve, etc.).

The processor 210 controls the RFID writer 204 to record the calculated safe speed on the RFID tag 203, and displays the calculated safe speed on the display unit (S104). In this case, the display unit serves as a sign for guiding the safe speed of the corresponding section. The sensor gateway installed in the vehicle reads the information stored in the RFID tag 203 through the RFID reader 205 and outputs the read information so that the user can recognize it through the output unit 208.

When the fog and / or ice is released, the processor 210 initializes the RFID tag 203 to store the general specified speed in the RFID tag 203 and displays the general specified speed in the display unit.

For example, the processing unit 210 of the sensor gateway 200 installed in the vehicle reads and displays tag data of the electronic tag installed on the roadside through the current speed of the vehicle measured by the position acquisition unit 206 and the electronic tag reader. do. The tag data includes a tag identifier, temperature and humidity, fog and freezing, terrain, road characteristics, and the like.

In addition, the sensor gateway 200 of the vehicle may calculate the safe speed through a safe speed calculation program in the vehicle. When the safe speed calculation program is executed, the sensor gateway 200 of the vehicle shows an execution screen as shown in FIG. 5. The execution screen includes a speed sign indicating safety speed and current speed, a status sign indicating whether fog and icing occurred and whether there is a sudden curve, and road conditions (road name, road condition, road slope, current weather, freezing section, guide section). , Sharp curve sections, lanes, etc.). After selecting the road condition and selecting the calculate button, the vehicle sensor gateway 200 calculates a safe speed based on the selected road condition.

6 is a flowchart illustrating a traffic accident information transmission method according to the present invention.

Referring to FIG. 6, when an external shock is applied to the vehicle due to a traffic accident, the sensor gateway 200 detects a corresponding shock through a shock sensor and measures the impact level (S201).

The processor 210 of the sensor gateway 200 determines the accident intensity according to the impact level (S202). For example, as shown in Table 1, the accident intensity can be classified into high, medium, and low according to the impact level. However, the present invention is not limited thereto, and the impact level and the accident intensity may be further subdivided.

Impact level Accident intensity One Prize 2 medium 3 Ha

When the accident intensity is determined, the processor 210 generates traffic accident information and transmits the traffic accident information to the traffic control server 300 through the communication unit 202 (S203, S204). The traffic accident information includes driver information, vehicle information, accident status, accident date and time, location information, and the like.

The traffic control server 300 transmits the received traffic accident information to the police station, generates a rescue request message based on the received traffic accident information, and transmits it to an emergency center such as 119 and a hospital.

7 is a flowchart illustrating a method for guiding railroad hazards due to a traffic accident according to the present invention.

First, the processing unit 210 of the sensor gateway 200 installed around the railroad crossing or the railroad senses an object on the track through the proximity sensor 100 (S301).

When an object is detected on the track, the processor 210 generates a notification message informing that there is a risk of an accident on the track and transmits it to the traffic control server 300 (S302 and S303).

When the traffic control server 300 receives the notification message informing the occurrence of the accident risk, the traffic control server 300 transmits a message informing the accident risk to the train operating the corresponding section.

100:
200: sensor gateway
201: Near Field Communication
202: communication unit
203: RFID tag
204: RFID writer
205: RFID reader
210:
300: traffic control server

Claims (10)

Sensor unit for detecting fog and freezing, traffic accidents, accident risks,
A sensor gateway for determining whether fog, ice, traffic accidents and accident risks occur based on the sensor data by the sensor unit, calculating safety speeds according to the determination result, and generating and transmitting traffic information;
Intelligent traffic system, characterized in that it comprises a traffic control server 300 for generating and transmitting traffic status information based on the traffic information collected through the sensor gateway.
The apparatus according to claim 1,
Intelligent traffic system, characterized in that consisting of any one of the temperature sensor, humidity sensor, shock sensor.
The apparatus according to claim 1,
Intelligent traffic system, characterized in that for communicating with the sensor gateway via a sensor network.
The method of claim 1, wherein the sensor gateway,
A short range communication unit performing short range communication with the sensor unit;
Communication unit for communicating with the traffic control server,
An electronic tag storing tag data,
An electronic tag recording unit for recording tag data in the electronic tag;
An electronic tag reader for reading tag data of the electronic tag;
Based on the sensor data measured by the sensor through the short-range communication unit to determine whether the fog and / or freezing, traffic accidents, accidents occur, calculate the safety speed according to the determination result, and generate traffic information Intelligent transportation system comprising a processing unit for outputting.
The method of claim 4, wherein the tag data,
Intelligent traffic system, including data such as tag identifier, temperature, humidity, fog, time, terrain road characteristics.
The method of claim 4, wherein the processing unit,
Intelligent traffic system, characterized in that for recording the calculated safe speed in the electronic tag.
The method of claim 6, wherein the processing unit,
Intelligent traffic system, characterized in that for initializing the electronic tag when the fog section and the freezing section is released.
Measuring temperature and humidity,
Determining whether fog and freezing occur based on the temperature and humidity;
Calculating a safety speed according to the generation of fog and freezing;
The traffic information providing method using the intelligent traffic system comprising the step of guiding the calculated safe speed.
Measuring the impact level applied to the vehicle,
Determining an accident intensity according to the measured impact level;
The traffic information providing method using the intelligent traffic system comprising the step of generating traffic accident information and transmitting the traffic accident information when the accident intensity is determined.
Detecting objects on the track,
If the object is detected by generating a notification message informing the risk of accidents and transmitting to the traffic control server,
The traffic control server provides a traffic information using the intelligent traffic system, characterized in that it comprises the step of transmitting a notification message notifying the risk of accident to the running train.

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