KR100472080B1 - Traffic Data Compilation System That Use Speed-Sensing System and a Method Using Thereof - Google Patents

Abstract

PURPOSE: A system and a method for collecting traffic data are provided to inform users of traffic information in real time by collecting various traffic data using a vehicle speed sensing system and transmitting the collected data to a traffic management system. CONSTITUTION: A vehicle detector(105) includes a non-contact sensor for detecting a vehicle. A camera(110) takes images of the detected vehicle at a predetermined time interval. A lighting portion(115) illuminates a predetermined amount of light to the vehicle for the camera(110). An image processor(120) recognizes a number plate from the taken images and reads the position and number of the number plate. A speed calculator(125) calculates a speed of the vehicle using the position and number of the number plate as well as pixel number data of the images taken at a predetermined time interval. A traffic information analyzer(130) analyzes information such as the calculated speed and the amount of traffic. A timer(135) counts date and time. A traffic information providing server(140) constitutes traffic information data using the taken image, calculated speed, time, data, local information of the vehicle, and the amount of traffic, and transmits/receives the traffic information data to/from a traffic management system. A controller(160) controls the overall components.

Description

Traffic Data Compilation System That Use Speed-Sensing System and a Method Using Thereof}

The present invention relates to a traffic information collection system and method using a vehicle speed detection system.

In the past, the present applicant has applied for and provided a vehicle speed sensing system and method in Korean Patent Registration No. 0442422.

The registered vehicle speed detecting system and method may include a vehicle detecting unit detecting a driving vehicle, a camera unit capturing the detected driving vehicle at predetermined time intervals, and acquiring an image, even when the illumination is low or at night, such as a cloudy day. An illumination unit for irradiating a predetermined amount of light so as to be able to irradiate a predetermined amount of light, Image processing unit for recognizing the license plate from the obtained image, the number and location of the license plate, and the location and number of the identified license plate and data of a predetermined time interval A speed calculator for calculating a vehicle speed, a timer unit for counting dates and times, a database unit for storing at least the obtained image, calculated speed data and time, and date data, and a controller for exchanging and controlling data with each unit If the vehicle is detected, the detected vehicle is detected at a predetermined time interval. To obtain an image, determine the position and number of the license plate from the acquired image, and determine the position and number of the license plate from the subsequently acquired image, The speed of the vehicle is calculated from the position data of the vehicle determined by the license plate.

However, with the recent rapid development of the information and telecommunications industry, the information and communication for video images as well as data for the information exchange in the field of information and communication are activated, so that a system that can efficiently use and manage various scattered data information is required. It became.

The present invention is to solve the above problems, in order to realize the purpose of the traffic, such as vehicle speed in a specific region, traffic volume, vehicle occupancy of a specific region at predetermined time intervals An object of the present invention is to provide a traffic information collection system and method using a vehicle speed detection system that collects and transmits information data to a traffic control system.

Traffic information collection system and method using a vehicle speed detection system of the present invention to achieve the above object,

Traffic information collection system using the vehicle speed detection system,

In the system for providing traffic information,

A vehicle detecting unit configured to detect a driving vehicle including a non-contact sensor such as a laser or an infrared sensor;

A camera unit for capturing the detected driving vehicle at predetermined time intervals to obtain an image;

An illumination unit for irradiating a predetermined amount of light so that the image can be taken even at low illuminance or at night;

An image processor which recognizes a license plate from the obtained image and determines a number and a location of the license plate;

A speed calculator which calculates a vehicle speed based on the determined position and number of the license plate and pixel number data of an image photographed at a predetermined time interval;

A traffic information analysis unit for analyzing information on the speed calculated by the speed calculator and the traffic volume, occupancy rate, etc. of the road being in traffic;

A timer unit for counting a date and a time;

A traffic information providing server configured to transmit and receive the obtained image, calculated speed data and time, date data, and acquired location information of the vehicle, traffic volume, occupancy rate, and the like with traffic information data;

And a controller for exchanging and controlling data between the respective units and the server.

In addition, the traffic information collection method using the vehicle speed detection system of the present invention,

A driving vehicle detection step of detecting the driving vehicle with a predetermined detection sensor;

An image acquisition step of acquiring a vehicle image by photographing the detected driving vehicle at a predetermined time interval;

A license plate recognition step of recognizing a license plate from the obtained vehicle images;

A discriminating step of discriminating a vehicle number and a location of the recognized license plate;

A vehicle speed calculating step of calculating a vehicle speed based on an acquisition time interval of the vehicle image and a distance and a position of the obtained vehicle image;

A data analysis step of analyzing a traffic volume, occupancy rate, etc. of a predetermined road through the calculated vehicle speed;

A data storage step of storing main traffic information data such as date, time, speed, image and region information, traffic volume of road, share of road, etc. for the acquired image;

And a communication transmission step of transmitting the traffic information data calculated by transceiving the traffic information data with the traffic control system to the traffic control system.

The vehicle speed calculating step,

It measures the occupancy rate using the vehicle length obtained by separating the vehicle types by analyzing the speed and license plate calculated using the time and the two distances from the start point to the end point of the vehicle detection unit that detects the traveling vehicle including a non-contact sensor. It is done.

According to the present invention by providing a traffic information collection system and method using a vehicle speed detection system,

The vehicle speed detection system of the present invention is installed to collect traffic volume information data for each region through the vehicle speed detection system as well as to control the speeding of the vehicle, and transmit the data to the traffic control system in real time and obtain the traffic information by accessing the traffic control system. It can be provided to the user.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the traffic information collection system and method using the present invention vehicle speed detection system.

1 is a block diagram of a traffic information collection system using a vehicle speed detection system according to an embodiment of the present invention.

As shown in Figure 1 is a traffic information collection system using a vehicle speed detection system according to an embodiment of the present invention,

In the system for providing traffic information,

A vehicle detection unit 105 for detecting a traveling vehicle including a non-contact sensor such as a laser or an infrared sensor;

A camera unit 110 for capturing the detected driving vehicle at predetermined time intervals to obtain an image;

An illumination unit 115 for irradiating a predetermined amount of light so that the image can be taken even at low illuminance or at night;

An image processor 120 for recognizing a license plate from the obtained image and determining a number and a location of the license plate;

A speed calculator 125 calculating a vehicle speed based on the determined position and number of the license plate and pixel number data of an image photographed at a predetermined time interval;

A traffic information analysis unit 130 for analyzing information about the speed calculated by the speed calculator and the traffic volume, occupancy rate, etc. of the road being in traffic;

A timer unit 135 for counting a date and a time;

A traffic information providing server 140 configured to transmit and receive the obtained image, calculated speed data and time, date data, and acquired location information of the vehicle, traffic volume, occupancy rate, and the like with traffic information data;

And a controller 160 for exchanging and controlling data between the units and the server.

The traffic information providing server 140,

A database unit 145 for storing at least the acquired image, the calculated speed data and time, date data, and acquired location information of the vehicle, traffic volume, and occupancy rate;

And a transmission unit 150 which transmits the traffic information data to a traffic control system at a remote place and performs a function of receiving a control signal of the traffic control system.

A non-contact sensor that detects the driving vehicle without contact with an object such as a laser or an infrared sensor is used. In addition, the camera unit 110 for acquiring the image may acquire an image by capturing at a predetermined time interval, or acquire an image by capturing at an increasingly short time interval, and the setting thereof may be freely set by an administrator.

The camera unit 110 may be fixed or tracking in the vehicle driving direction, but when tracking in the vehicle driving direction, correction is performed according to the tracking when determining the position of the license plate.

The traffic information analysis unit 130 performs a function of analyzing information regarding the speed calculated by the speed calculator 125 and the traffic volume, occupancy rate, etc. of the road being in traffic. In more detail, a vehicle driving on a predetermined road operates while maintaining a constant speed, which is a criterion for knowing the congestion degree and traffic volume of the predetermined road based on the speed of the vehicle. That is, when the vehicle passes the initial detection point and the last detection point in the vehicle detection unit 105, the speed, distance, and time of the vehicle can be measured accordingly. In addition, it is possible to obtain the vehicle model information by analyzing the license plate of the vehicle automatically recognized, and the length of the vehicle can be obtained through the obtained vehicle model information to calculate the occupancy in combination with the speed.

Based on the measured data, the traffic volume of the road and the road occupancy can be known, and the data is transmitted to the traffic information providing server 140 through the control of the controller. The transmitted data is stored in the database unit 145 of the traffic information providing server 140, the acquired image, the calculated speed data and time, date data and the acquired local location information of the vehicle.

The traffic information data input to the traffic information providing server 140 may be collected to grasp road congestion and traffic volume in real time, and the present invention uses a vehicle speed detection system as well as a speeding vehicle through a vehicle speed detection system. To collect traffic information data input to the traffic information providing server 140 for each region and transmit the data to the traffic control system in real time and store the data according to a predetermined setting in the traffic control system, thereby obtaining traffic information It is to provide traffic volume information data of a specific area to a user in real time.

The traffic control system 200 is installed in a traffic customs center located at a remote location, and is a system for integrated management of traffic information data received from traffic information collection systems scattered around the country.

In addition, it is possible to check the major traffic route for a given vehicle to secure data such as average travel time, average driving days. This data can be used later to gather information for road extensions and other infrastructure.

2 is a reference diagram for explaining a vehicle speed sensing method in a vehicle speed sensing system according to an embodiment of the present invention.

As shown in FIG. 2, the vehicle speed sensing method in the vehicle speed sensing system according to an exemplary embodiment of the present invention calculates the vehicle speed from an image obtained by photographing the detected traveling vehicle at a predetermined time interval, thereby calculating the speeding vehicle. As for discriminating, first, the license plate is recognized in an image acquired at a predetermined time interval (T1, T2, T3 in FIG. 2). The license plate recognition method uses a commonly used image processing and image recognition method.

After recognizing the license plate from the obtained image, the number and location of the license plate are determined. In FIG. 2, the license plate number is 9375, the position of the license plate is 9 m in the T1 time image, 5 m in the T2 time image, and 1 m in the T3 time image. As a method of determining the number of the license plate, a commonly used method such as pattern matching is used.

The speed is calculated based on the position and number of the license plate obtained as described above and data of a predetermined time interval. For example, in FIG. 2, when T1 is 0.2 seconds, T2 is 0.4 seconds, and T3 is 0.6 seconds, the vehicle with the vehicle number 9375 is at 9m, 5m, and 1m positions, respectively, and the distance between S1 and S2 is 4m, respectively. Since the vehicle with the vehicle number 9375 travels 4 m for 0.2 seconds, the traveling speed is 20 m per second, that is, 72 km per hour.

The actual driving distance of 9m, 5m, etc. is that the closer the vehicle is to the camera, the faster the position of the vehicle appears in the image according to the movement of the vehicle than when the vehicle is at a distance, and the present invention corrects this to calculate the speed. In calculating the speed, the number of image pixels on the distance in which the vehicle moves in a certain time is counted and calculated.

For example, if the number of pixels in the image is 640 x 480, when the number of pixels in the direction in which the vehicle travels is calculated, the straight distance is calculated as 1.5625cm when 640 pixels is calculated as a distance of about 10m.

If the car runs diagonally, the distance of one pixel diagonally is equal to 1.5625 times the root centimeter of about 2.213 cm.

The speed can be measured as described above, and the traffic information data is analyzed by the information calculated on the speed calculated by the traffic information analysis unit 130, the traffic volume, the occupancy rate, etc. of the road. That is, the passing speed of a specific vehicle on a specific road is calculated using the time from the moment T1 to the moment T2 of the contactless sensor and the distance between the two S1 and S2.

As described above, the passing speed is calculated, and the traffic volume can be obtained by accumulating the number of the photographed images, and the share of a specific road is analyzed automatically by the license plate of the passing vehicle, and the vehicle types such as passenger cars, vans, and trucks are analyzed. By separating the vehicle length can be obtained and combined with the measured speed to calculate the share of the particular road.

In calculating the vehicle length, the length measurement result of the laser or the radar is used for the more precise length measurement.

The average traffic volume can be calculated by calculating the average passing speed and a predetermined time. In addition, the occupancy rate of the specific vehicle on the specific road is the time from the time T1 to the time T2 of the non-contact sensor.

That is, the overall utilization of the vehicle speed detection system is possible, and the present invention relates to a traffic information collection system and method using the vehicle speed detection system.

3 is a flow chart of a traffic information collection method using a vehicle speed detection system according to an embodiment of the present invention.

As shown in Figure 3, the traffic information collection method using a vehicle speed detection system according to an embodiment of the present invention

In the method of collecting traffic information according to the present invention,

A driving vehicle detection step S100 of detecting the driving vehicle by a predetermined detection sensor;

An image acquiring step (S110) of acquiring a vehicle image by capturing the detected driving vehicle at a predetermined time interval;

A license plate recognition step (S120) of recognizing a license plate from the obtained vehicle images;

A discriminating step (S130) of determining a vehicle number and a location of the recognized license plate;

A vehicle speed calculating step (S140) of calculating a vehicle speed based on an acquisition time interval of the vehicle image and a distance and a position of the obtained vehicle image;

A data analysis step (S150) of analyzing traffic volume, occupancy rate, etc. of the predetermined road through the calculated vehicle speed;

A data storage step (S160) of storing main traffic information data such as date, time, speed, image and region information, acquired traffic volume, and occupancy rate of the acquired image;

And a communication transmission step (S170) for transmitting the traffic information data calculated by transceiving the traffic information data with the traffic control system to the traffic control system.

If there is more than one license plate recognized in step S100 of recognizing the license plate, the number and location of each recognized license plate are determined to discriminate the speed calculation for each.

Therefore, when the driving vehicle is detected by the vehicle speed detecting system of the present invention, the detected driving vehicle is photographed at a predetermined time interval to acquire an image, and the position and number of the license plate and the vehicle are determined from the acquired image. The vehicle determines the position and number of the license plate and the vehicle from the subsequently acquired image, calculates the vehicle speed from the acquisition time interval of the before and after image and the position data of the vehicle determined by the license plate in the acquired image. Speed can be detected. In addition, by using the recognized license plate data of the area where the vehicle is located and stored in the traffic information providing server 140 collects the traffic information data by region and transmits to the traffic control system in real time and predetermined to the traffic control system Since data is stored according to the setting, traffic volume information data of a specific region is provided to a user who wants to obtain traffic information by accessing in real time. As a result of analyzing the frequency and the date of passage of a specific vehicle as described above, it is possible to grasp the movement route of the residents of a specific region in general and use it for collecting traffic information. By collecting the traffic information data such as vehicle speed, specific traffic volume, and vehicle occupancy rate in a specific area at a predetermined time interval, the driving vehicle detected through the above configuration is transmitted to the traffic control system in real time. It will be able to collect traffic information to provide traffic information to the vehicle operator who wants to pass through the congested area to eliminate the congestion of roads and to induce smooth traffic flow.

Those skilled in the art to which the present invention pertains as described above may understand that the present invention may be implemented in other specific forms without changing the technical spirit or essential features of the present invention. Therefore, the above-described embodiments are to be understood as illustrative in all respects and not restrictive.

The scope of the invention is indicated by the following claims rather than the above description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the invention. do.

 According to the traffic information collection system and method using the vehicle speed detection system according to the present invention having the above configuration and action,

In addition to cracking down on speeding vehicles through the vehicle speed detection system, traffic data information by region is collected using the vehicle speed detection system and transmitted to the traffic control system in real time, and the user who wants to obtain traffic information by accessing the traffic control system in real time. This has the effect of providing traffic information data for a specific area.

1 is a block diagram of a traffic information collection system using a vehicle speed detection system according to an embodiment of the present invention.

2 is a reference diagram for explaining a vehicle speed sensing method in a vehicle speed sensing system according to an embodiment of the present invention.

3 is a flow chart of a traffic information collection method using a vehicle speed detection system according to an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

105: vehicle detection unit

110: camera unit

115: lighting unit

120: image processing unit

125: speed calculator

130: Traffic Information Analysis Department

135: timer unit

140: traffic information providing server

145: database unit

150: transmission unit

160: control unit

200: traffic control system

Claims (4)

In the system for providing traffic information, A vehicle detection unit 105 for detecting a traveling vehicle including a non-contact sensor such as a laser or an infrared sensor; A camera unit 110 for capturing the detected driving vehicle at predetermined time intervals to obtain an image; An illumination unit 115 for irradiating a predetermined amount of light so that the image can be taken even at low illuminance or at night; An image processor 120 for recognizing a license plate from the obtained image and determining a number and a location of the license plate; A speed calculator 125 calculating a vehicle speed based on the determined position and number of the license plate and pixel number data of an image photographed at a predetermined time interval; A traffic information analysis unit 130 for analyzing information about the speed calculated by the speed calculator and the traffic volume, occupancy rate, etc. of the road being in traffic; A timer unit 135 for counting a date and a time; A traffic information providing server 140 configured to transmit and receive the obtained image, calculated speed data and time, date data, and acquired location information of the vehicle, traffic volume, occupancy rate, and the like with traffic information data; And a control unit 160 for exchanging and controlling data between the units and the server. The method of claim 1, The traffic information providing server 140, A database unit 145 for storing at least the acquired image, calculated speed data and time, date data, and acquired regional location information, traffic volume, occupancy rate, etc .; Traffic information using the vehicle speed detection system, characterized in that it comprises a; transmission unit 150 for transmitting the traffic information data to a traffic control system at a remote location, and receives a control signal of the traffic control system Collection system. A vehicle detecting unit configured to detect a driving vehicle including a non-contact sensor such as a laser or an infrared sensor; a camera unit for capturing an image by sensing the detected driving vehicle at a predetermined time interval; An illumination unit for irradiating a predetermined amount of light to be photographed; Image processing unit for recognizing the license plate from the obtained image, and discriminating the number and location of the license plate; At the predetermined time interval A speed calculator for calculating a vehicle speed based on the pixel number data of the photographed image; a traffic information analyzer for analyzing information about the speed calculated through the speed calculator, traffic volume, and occupancy rate of the road; and a date and time. A timer unit for counting; The acquired image, the calculated speed data and time, date data and the area of the vehicle obtained In the method for collecting traffic information comprising a traffic information providing server for transmitting and receiving the location information to the traffic control system and transmitting and receiving the traffic control system; A driving vehicle detection step S100 of detecting the driving vehicle by a predetermined detection sensor; An image acquiring step (S110) of acquiring a vehicle image by capturing the detected driving vehicle at a predetermined time interval; A license plate recognition step (S120) of recognizing a license plate from the obtained vehicle images; A discriminating step (S130) of determining a vehicle number and a location of the recognized license plate; A vehicle speed calculating step (S140) of calculating a vehicle speed based on an acquisition time interval of the vehicle image and a distance and a position of the obtained vehicle image; A data analysis step (S150) of analyzing traffic volume, occupancy rate, etc. of the predetermined road through the calculated vehicle speed; A data storage step (S160) of storing main traffic information data such as date, time, speed, image and region information, acquired traffic volume, and occupancy rate of the acquired image; And a traffic transmission step (S170) for transmitting the traffic information data, which is calculated by transceiving the traffic information data with the traffic control system, to the traffic control system (S170). The method of claim 3, The vehicle speed calculating step, It measures the occupancy rate using the vehicle length obtained by separating the vehicle types by analyzing the speed and license plate calculated using the time and the two distances from the start point to the end point of the vehicle detecting unit including a non-contact sensor. Traffic information collection method using a vehicle speed detection system.