KR200278345Y1 - Transportation information sensing apparatus - Google Patents

Abstract

The present invention relates to a traffic information detection device that can detect the traffic flow on the road, and provides real-time traffic volume and image information on the road by using a RTMS (Remote Traffic Microwave Sensor) vehicle detector and a video camera even at night or in bad weather It relates to a traffic information detection device that can manage this remotely. The traffic information detecting device according to the present invention comprises: at least one image camera (s) installed on a fixture on a road so as to take a picture of a road situation and an image of a road situation; At least one is installed in the fixture on the road to detect the multi-lane, and adopts the frequency modulation continuous wave method to receive the reflected wave reflected from the vehicle running on the road using microwaves, the speed of the vehicle, the presence of the vehicle, the share RTMS vehicle detector (s) for detecting the back; 1 to provide a multi-port to the video camera (s) and RTMS vehicle detector (s), receives detection data input from each video camera and RTMS vehicle detector, and outputs a control signal to the video camera and RTMS vehicle detector : N with multi ports; Traffic volume, speed, occupancy rate, vehicle type, queue, and compressed video information in real time through a signal processor using the video data and the vehicle detection data from the video camera and the RTMS vehicle detector received through the 1: N multi-port. A control unit for generating traffic information such as a vehicle and logging into the memory, and outputting the video camera and the RTMS vehicle detector control signal to the video camera and the RTMS vehicle detector through the 1; N multi-port; And a communication unit connected to the control unit and responsible for control and transmission / reception of traffic information through a communication protocol regulated with an external communication medium.

Description

Traffic information detection device {TRANSPORTATION INFORMATION SENSING APPARATUS}

The present invention relates to a traffic information detection device and system that can grasp the traffic flow on the road, and in particular, at night or in bad weather by using a RTMS (Remote Traffic Microwave Sensor) vehicle detector and a video camera, The present invention relates to a traffic information detection device that can provide remote management.

The development of scientific civilization has enriched and enriched our lives, but also caused traffic problems such as traffic congestion due to increasing traffic volume, pollution accidents and air pollution, and deterioration of traffic environment. Therefore, governments are investing in the improvement of transportation facilities to solve these traffic problems, and as a part of the improvement of these transportation problems, the government has introduced a new type of transportation system called Intelligent Transport Systems (ITS). Reached.

The intelligent traffic system is a traffic information system such as road, car, railroad, aviation, shipping, traffic information detection technology, traffic flow control technology, real-time, etc. It is an innovative transportation system that combines cutting-edge electronic, communication, and control technologies such as information transmission and reception technology to collect and analyze real-time traffic information to secure a fast, inexpensive and safe traffic environment and streamline operations. .

As a premise of building such an intelligent transportation system, it is necessary to install an electric power and communication joint in the road network, and to install an environment for detecting traffic volume by installing various detectors.

The detectors that have been installed and used for traffic information have been loop type detectors, image detectors and ultrasonic detectors. The conventional loop type detector has problems in installation, maintenance, and durability, and the accuracy of collecting information such as traffic volume or vehicle type is not excellent, and the conventional image detector has low economical efficiency and information such as speed, traffic volume, and vehicle type at night or in bad weather The accuracy of the collection was not excellent, and the conventional ultrasonic detector also has the problem that the detection capability of the above detectors is the most excellent but does not provide real time information or the surrounding road conditions are not known in detail.

Accordingly, an object of the present invention is to provide a traffic information detection device having excellent multi-lane detection capability and providing real-time traffic information and image monitoring functions.

Another object of the present invention is to provide a traffic information detection device capable of remotely controlling a traffic information detection device installed in a road network at a remote location and obtaining desired traffic information.

Another object of the present invention is to detect a variety of information that can analyze the exact traffic conditions even at night or bad weather, and to provide a traffic information detection device that is easy to install in a compact and lightweight.

In order to solve the above object, the traffic information detecting device according to the first aspect of the present invention is:

At least one video camera (s) installed at the fixture on the road so as to take a picture of the situation of the road;

At least one is installed in the fixture on the road to detect the multi-lane, and adopts the frequency modulation continuous wave method to receive the reflected wave reflected from the vehicle running on the road using microwaves, the speed of the vehicle, the presence of the vehicle, the share RTMS vehicle detector (s) for detecting the back;

1 to provide a multi-port to the video camera (s) and RTMS vehicle detector (s), receives detection data input from each video camera and RTMS vehicle detector, and outputs a control signal to the video camera and RTMS vehicle detector : N with multi ports;

Traffic volume, speed, occupancy rate, vehicle type, queue, and compressed video information in real time through a signal processor using the video data and the vehicle detection data from the video camera and the RTMS vehicle detector received through the 1: N multi-port. A control unit for generating traffic information such as a vehicle and logging into the memory, and outputting the video camera and the RTMS vehicle detector control signal to the video camera and the RTMS vehicle detector through the 1; N multi-port;

And a communication unit connected to the control unit and responsible for control and transmission / reception of traffic information through a communication protocol regulated with an external communication medium.

In addition, the traffic information detection apparatus according to the second aspect of the present invention is to diagnose the failure or abnormality by continuously or periodically measuring the failure of the general equipment including the video camera and RTMS vehicle detector to be transmitted to an external communication medium A diagnostic apparatus for generating data is further provided.

In addition, the communication unit of the traffic information detecting apparatus according to the third aspect of the present invention is characterized in that the RF modem.

In addition, the communication unit of the traffic information detecting apparatus according to the fourth aspect of the present invention is characterized in that the Ethernet.

In addition, the communication unit of the traffic information detecting apparatus according to the fifth aspect of the present invention is characterized in that the optical cable.

1 is a block diagram of a traffic information detecting apparatus and system according to an embodiment of the present invention;

2 is a view showing an installation example of a traffic information detection apparatus according to an embodiment of the present invention,

3 is a diagram illustrating an example of road installation of a traffic information detection device for traffic information detection according to an embodiment of the present invention;

4 is a diagram illustrating an example of a traffic information management screen operated by a remote center in a traffic information detection system according to an embodiment of the present invention;

5 is a view showing an example of a transmission screen transmitting the RTMS data from the traffic information detection device to the remote center in the traffic information detection system according to an embodiment of the present invention,

6 is a view illustrating a signal flow between a traffic information detecting device and a remote location center according to an embodiment of the present invention;

7 is a diagram illustrating an example of a data format transmitted from a traffic information detecting apparatus to a remote center according to an embodiment of the present invention;

8 is a view showing the operation of the traffic information detection apparatus according to an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

10: video camera 20: RTMS vehicle detector

30: 1: N multiport 40: Diagnostics

50: control unit 53: signal processor

60: memory 70: communication unit

71: RF modem 73: Ethernet

75: optical cable 100: traffic information detection device

200: remote center 50 ': CPU board

1: road

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same components have the same reference numerals as much as possible even if they are displayed on different drawings. And a detailed description of known functions and configurations that are determined to unnecessarily obscure the subject matter of the present invention will be omitted.

1 is a block diagram of a traffic information detection apparatus and system according to an embodiment of the present invention, Figure 2 is a view showing an example of the installation of the traffic information detection apparatus according to an embodiment of the present invention, Figure 3 FIG. 1 is a diagram illustrating an example of road installation of a traffic information detection device for traffic information detection according to an embodiment of the present invention.

The traffic information detection apparatus according to the present invention through the drawings of Figures 1 to 3 is a video camera (10a, 10b), RTMS vehicle detector (20a, 20b), 1: N multi-port 30, the diagnostic device 40, the control unit 50, a signal processor 53, a memory 60, a communication unit 70, the communication unit 70 therein communication means such as RF modem 71, Ethernet 73 and optical cable 75, etc. By using the protocol to perform a communication with the remote center 200.

The video cameras 10a and 10b are installed to photograph a situation (driving vehicle) of a road (or a specific and multiple lanes) at a center and road fixtures as shown in FIGS. 2 and 3. For example, use a CCTV camera. The video cameras 10a and 10b are installed and operated in one or more plurality according to road conditions (by lane, by up / down lane).

The RTMS (Remote Traffic Microwave Sensor) vehicle detectors 20a and 20b adopt a frequency modulated continuous wave frequency modulated continuous wave (FMCW) method to receive reflected waves reflected from the vehicle by using electromagnetic waves of 24.20 GHz microwaves. The speed of a moving vehicle is measured to detect the presence or occupancy of the vehicle. The RTMS vehicle detectors 20a and 20b are installed at the center of the road and the fixture along the road, as shown in the examples shown in FIGS. 2 and 3, and at least one plurality of road detectors according to road conditions (by lane, by up / down lane). It is installed and operated. The RTMS vehicle detectors 20a and 20b are installed in the fixture at a height of 6 to 10 m as shown in FIG. 3, and can detect multiple lanes (for example, round trip 16 lanes).

The 1: N multi-port 30 provides a 1: N multi-port to which a plurality of detectors (image cameras and RTMS vehicle detectors) are connected to one system, and the image cameras 10a and 10b and the RTMS vehicle detectors ( The detection data input from the 20a, 20b is applied to the controller 50, and the detector control signal from the controller 50 is output to the image cameras 10a, 10b and the RTMS vehicle detectors 20a, 20b. Signal input / output port.

The diagnostic unit 40 continuously or periodically measures the failure of all the equipment, particularly the image cameras 10a and 10b and the RTMS vehicle detectors 20a and 20b, provided in the traffic information detecting device, to determine whether there is a failure or abnormality. Check to generate diagnostic data. The diagnostic apparatus can perform a self-diagnostic detection system, a control unit status check, a power supply status check, an initialization diagnosis, a data transmission status diagnosis, and a dedicated line diagnosis with a diagnostic function.

The control unit 50 uses the image data from the video cameras 10a and 10b received through the 1: N multi-port 30 and the vehicle detection data of the RTMS vehicle detectors 20a and 20b. Through 53, traffic information such as traffic volume, speed, occupancy, vehicle type, queue, and image information is generated in real time. Traffic information generated through the signal processing 53 is controlled by the remote center 200. The image information is compressed and stored. In addition, the controller 50 may store an error message list when an error message according to simultaneous detection of driving lanes and opposite lanes, speeding vehicle alarms, second / minute / hour / month data output, data backup, and operation occurs. To control.

The memory 60 logs in the real-time traffic information generated by the controller 50.

The communication unit 70 is a communication device for transmitting and receiving control and traffic information with a remote center 200 located at a remote location. An RF modem 71, an Ethernet 73, an optical cable 75, and the like are the control unit ( 50) and the diagnostic device 40. The communication unit 70 converts data by a communication protocol regulated with the remote center 200, for example, RS232C communication, LAN communication, wireless Internet communication, and optical communication, and signals with an external communication medium such as the remote center 200. And transmit / receive information in real time or periodically. Preferably, the wireless communication method will be advantageous in terms of installation and maintenance rather than the wired communication method.

The remote center 200 has a communication unit capable of communicating with a traffic information detection device installed on the road, generates a control signal to remotely control the operation of the traffic information detection device, the traffic information detection device From the traffic information and diagnostic information received from the traffic information, the traffic volume, speed, occupancy, vehicle type, queue and image information of the road on which the traffic information detection device is installed is obtained in real time. The remote center 200 operates the traffic management screen as shown in FIG. 4 and checks the traffic information of the road on which the traffic information detection device is installed in real time, and takes measures corresponding to the traffic situation. The information may be shared by transmitting to a third system (including a mobile vehicle) configured.

The remote location center 200 detects the corresponding traffic information at a remote location, as shown in an example of a traffic information management screen operated at a remote location center in the traffic information detection system according to the embodiment of the present invention shown in FIG. 4. Confirmation of traffic information (traffic volume, speed, occupancy, vehicle type, queue and image information) input from the device, camera position control, camera direction control, magnification, brightness, sharpness control, storage management of received traffic information and traffic statistics The management screen can be operated so that the control of the management can be comprehensively controlled from one screen. In addition, an example of the RTMS data transmission screen transmitted from the traffic information detecting device to the remote center 200 is as shown in FIG. 5.

In addition, the remote center 200 is automatically analyzed by the place, lane, time, direction data by the demarcation, clock, day, month, horizontal, vertical, broken line, dotted line, It has an output function to enable circular graph, radial, area, and donut graph output.

On the other hand, an example of the installation of the traffic information detection apparatus according to the present invention will be briefly described with reference to Figs. 2 is a view showing an installation example of a traffic information detection apparatus according to an embodiment of the present invention, Figure 3 is an example of road installation of a traffic information detection device for traffic information detection according to an embodiment of the present invention Figure is shown. Assuming that the fixture on which the traffic information detection device is installed is a street lamp installed along a road as shown in FIG. 2, the image camera 10 and the RTMS vehicle detector 20 detect a detection lane at a predetermined height (6 to 10 m) of the street lamp. It is installed and operated toward a predetermined direction and angle, and the RF modem 71 is installed at a predetermined height of the street light, and the CPU board (control board) 50 'having other components built therein is installed at an appropriate position at the bottom of the street light. do.

In addition, looking at an example in which the traffic information detection device is installed in the center of the road through FIG. 3 is a view showing an example of the road installation of the traffic information detection apparatus for detecting traffic information according to an embodiment of the present invention, RTMS vehicle detector 20 according to the present invention can detect a plurality of lanes It is installed to detect multiple lanes (multiple lanes) according to road conditions and installation environment.

The signal flow between the traffic information detecting device 100 and the remote center 200 will be described with reference to FIG. 6; FIG. 6 is a view illustrating a signal flow between the traffic information detecting apparatus 100 and the remote center 200 according to an embodiment of the present invention, and the remote center 200 uses a road through an operation screen as shown in FIG. 4. It is possible to control a plurality of traffic detection device 100 located in the upper, each control signal S1 is transmitted from the remote center 200 through the communication protocol regulated from the traffic information detection device 100. Then, the traffic information detection apparatus 100 transmits the traffic information detection data S2 and the diagnostic data S3 to the remote center 200 in real time or periodically.

FIG. 7 is a diagram illustrating an example of a data format transmitted from the traffic information detecting apparatus 100 to the remote center 200 according to an embodiment of the present invention, wherein the detection area D1 and the traffic volume (vehicle number) D2 are used as traffic information. , Occupancy rate (%) D3, speed (Km / h) D4, vehicle type D5, vehicle head distance (queue) D6, and image data D7 information. In addition, data that can be processed according to the present invention are lane and group distance between vehicles, average speed for each lane, and distance measurement information between vehicles.

8 is a view illustrating an operation flow of the traffic information detection apparatus according to an embodiment of the present invention, and will be described with reference to the block configuration of the traffic information detection system of FIG. 1.

First, the RTMS vehicle detector 20 and the image camera 10 as detection means detect the traffic information of the detection area under the control of the controller 50. In step 301, the RTMS vehicle detector 20 detects the detection area in real time. The vehicle is detected by using an ultrasonic wave (Microwave), and in step 303, the image camera 10 captures an image of the detection area in real time. Then, in step 305, the data input through the RTMS vehicle detector 20 and the image camera 10 are input to the controller 50 through the 1: N multi-port 30. The control unit 50 controls the signal processor 53 in step 307 to detect the detection data of each image camera 10 and the RTMS vehicle detector 20 input through the 1: N multi-port 30. Signal processing for generating traffic information such as speed, occupancy, vehicle type, queue, and image information is performed. The traffic information generated as described above is data logged in real time to the memory 60 under the control of the controller 50 in step 309. In addition, the controller 50 controls the communication unit 70 to transmit traffic information to the remote center 200 in step 311 to transmit traffic information to the remote center 200 based on the communication protocol. To convert the data. In operation 313, the controller 50 transmits data to the remote center 200 through the communication unit 70. Then, the remote center 200 obtains the traffic conditions of each road, analyzes the exact traffic conditions, and obtains the traffic situation information as necessary through the traffic information received from the traffic information detection devices installed in each road network. Is transmitted to a third system configured in the ITS.

On the other hand, if the data is input through the 1: N multi-port 30 in step 305, the control unit 50 can diagnose the presence or absence of equipment in accordance with the presence or absence of data for each port, in step 321 40) is activated to detect the equipment that has no data input or error among the detectors in operation and diagnoses the equipment abnormality by individual equipment. The diagnosis result is operated by the control unit 50 and processed into diagnostic data through the signal processing unit 53 and the communication unit 70, and then transmits the diagnosis result data to the remote center 200 in step 323. In the center 200, the traffic information detecting apparatus 100 may be checked for a failure and a failure part.

In addition, the diagnostic process may be performed by setting a separate diagnostic cycle, or may be operated in parallel during the traffic information detection operation as in the flow. The method may also be diagnosed by a separate failure diagnosis signal, or may be diagnosed as an abnormality by the presence or absence of data input from each device.

On the other hand, in the detailed description of the present invention has been described with reference to specific embodiments, of course, various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the embodiments described, but should be defined by the scope of the utility model registration claims to be described later and the equivalents of the utility model registration claims.

As described above, the present invention detects various information for analyzing accurate traffic conditions even at night or in bad weather, has excellent multi-lane detection capability, provides real-time traffic information and video monitoring function, and installs in small and light weight. It is possible to remotely control the traffic information detection device installed in the road network at a remote location by devising a traffic information detection device that is easy to use, and there is an advantage of obtaining desired traffic information in real time.

In addition, the present invention is a premise of building an intelligent transportation system (ITS), thereby real-time traffic control (ATC), accident situation management (AIM), automatic traffic enforcement (ATE), and heavy vehicle management (HVM) that are configured in the future intelligent transportation system. It will be the basis for advanced road systems (AHS), best route guidance (RGS) and traffic information (TRIS).

Claims (5)

In the traffic information detection device: At least one video camera (s) installed at the fixture on the road so as to take a picture of the situation of the road; At least one is installed in the fixture on the road to detect the multi-lane, and adopts the frequency modulation continuous wave method to receive the reflected wave reflected from the vehicle running on the road using microwaves, the speed of the vehicle, the presence of the vehicle, the share RTMS vehicle detector (s) for detecting the back; 1 to provide a multi-port to the video camera (s) and RTMS vehicle detector (s), receives detection data input from each video camera and RTMS vehicle detector, and outputs a control signal to the video camera and RTMS vehicle detector : N with multi ports; Traffic volume, speed, occupancy rate, vehicle type, queue, and compressed video information in real time through a signal processor using the video data and the vehicle detection data from the video camera and the RTMS vehicle detector received through the 1: N multi-port. A control unit for generating traffic information such as a vehicle and logging into the memory, and outputting the video camera and the RTMS vehicle detector control signal to the video camera and the RTMS vehicle detector through the 1; N multi-port; And a communication unit connected to the control unit and responsible for controlling and transmitting / receiving traffic information through a communication protocol regulated with an external communication medium. The method of claim 1, The apparatus for detecting traffic information further includes a diagnostic device that continuously or periodically measures whether there is a failure of all equipment including the image camera and the RTMS vehicle detector to check whether there is a failure or abnormality and generate diagnostic data to be transmitted to an external communication medium. Traffic information detection device, characterized in that. The method of claim 2, The diagnostic apparatus includes a detection system self-diagnosis, a control unit state check, a power state check, an initialization diagnosis, a data transmission state diagnosis, and a dedicated line diagnosis function. The method of claim 3, wherein The control unit uses the image data and the vehicle detection data from the image camera and the RTMS vehicle detector received through the 1: N multi-port through the signal processor, the group interval between lanes, the average length of each lane, Measures average speed, distance between cars, detects driving lanes and opposite lanes at the same time, alarms of speeding vehicles, second / minute / hour / day / monthly data output, data backup, and error messages Traffic information detection device characterized in that it controls to save the error message list when it occurs. The method of claim 1, The communication unit is a traffic information detection device, characterized in that consisting of RF modem, Ethernet, optical cable.