KR101407615B1 - Traffic Light System - Google Patents

Abstract

The traffic light system of the present invention comprises: a traffic light main body (110) disposed on both sides of a crosswalk; A traffic light (130) connected to an external traffic signal controller to control the entry of a pedestrian; A speaker 140 for guiding the sound through the pedestrian; And a camera 120 mounted on the signal lamp body 110 for observing and recording movement of a vehicle and a moving situation of a pedestrian in real time, and the signal lamp system is installed inside the signal lamp body 110 A main control unit 180 for controlling the signal lamp system 100; A first detection sensor (160) installed in the signal lamp body (110) for detecting a person near the crosswalk; And a sensing sensor member 170 installed to face the signal lamp body 110; A second sensing sensor 162 disposed on the sensing sensor member 170 in pairs paired with the first sensing sensor 160 installed in the signal light main body 110 so as to face each other; A sensor control unit 182 disposed inside the signal lamp body 110 to control the first sensing sensor 160 and the second sensing sensor 162; And an interphone 190 for intercommunication between a central server 210 located outside and a field traffic worker.
The central server 210 may be controlled by the central server 210 located outside the network and the central server 210 may control the network communication of the signal lamp system 100, The main control unit 180 of the traffic light system 100 can detect the state of the main control unit 180 and the main control unit 180 of the traffic light system 100 via the network, And to a signal lamp system configured to be able to transmit data related to announcement broadcasting, downloading and upgrading control firmware of the sensors 160 and 162, signal lamp lighting time, effect sound according to a signal lamp, ON / OFF of illumination,

Description

Traffic Light System}

The present invention relates to a traffic light system, and more particularly, to a traffic light system, which can be remotely controlled by a central server, includes a camera and a detection sensor to monitor movement of a vehicle and a pedestrian in real time, The present invention relates to a traffic light system for informing a driver of a dangerous situation using a vehicle.

Traffic lights are generally installed on the roads to ensure the safety of pedestrians, make the traffic easier, and prevent car accidents. However, in spite of the installation of such traffic lights, casualties have not been reduced due to driver's carelessness, signal violation, pedestrian carelessness and unauthorized crossing. In addition, as the number of vehicles is steadily increasing, the traffic volume is expected to increase, so that accidents on the crosswalk are expected to continue to increase.

Furthermore, it is true that young children and elderly people are inferior to the general public in grasping the movement of vehicles when crossing a crosswalk. If a child is small and tall, it is easy to be blocked by the car being parked, and if the driver suddenly enters the crosswalk without recognizing the passing vehicle, it is likely to lead to an accident. In addition, the elderly are required to have a traffic light system that is slow in movement and has no ability to cope with the moment, so that the danger situation can be informed in advance. Therefore, the role of the traffic light system has been advanced from the control of the traffic of the vehicles and pedestrians to the recognition of the dangerous situation through the recognition technology using the camera and the notification of the dangerous situation through the sound device.

Korean Patent No. 10-0372095 (entitled " Pedestrian voice guidance apparatus ") and Korean Patent No. 10-0916632 (entitled " A pedestrian crossing pedestrian traffic safety system).

Korean Patent No. 10-0372095 relates to a crosswalk voice guidance apparatus that generates a warning sound when a person is present in a crosswalk in a state in which a red light is lit and is provided near a delivery side on a crosswalk to detect a human body A human body detecting means and a signal light detecting means for detecting the state of a traffic light on the crosswalk, and when there is a person on the crosswalk, a warning sound is outputted so as to leave the roadway so that a traffic accident on the crosswalk can be prevented in advance It is a sidewalk voice guidance device.

In addition, Korean Patent No. 10-0916632 discloses a method for detecting a vehicle and a pedestrian crossing over a crosswalk using object recognition technology of a camera, and providing an alarm notice that can be recognized by both the driver and the pedestrian, To a pedestrian traffic safety system.

However, according to this prior art, diagnosis and management of the normal operation of the individual signal lamp system has been made for the individual signal lamp system. Therefore, it is difficult to monitor and control many traffic light systems in real time according to road conditions, and integrated real-time diagnosis of individual traffic light systems has not been made. In addition, the upgrade of the traffic light system was made individually, which made the management of the traffic light system inefficient. In addition, for the purpose of pedestrian safety announcement, it became necessary to grasp the position of the pedestrian waiting to cross the crosswalk more accurately.

1. Korean Patent No. 10-0372095 2. Korean Patent No. 10-0916632

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the conventional problems as described above, and it is an object of the present invention to provide a system and method for monitoring a surrounding situation of an individual traffic light system in real time by connecting a plurality of traffic light systems and a central server in a jurisdiction over a network, And to provide a signal lamp system capable of controlling the individual signal lamp system by transmitting data necessary for signal lamp operation when necessary, and upgrading the signal lamp system operating system through a network.

Another object of the present invention is to provide a traffic light system capable of accurately recognizing the position of a waiting pedestrian in order to cross a pedestrian crossing using a camera and a human body detection sensor.

In order to achieve the above-mentioned object, the present invention provides a navigation system for a vehicle, which is connected to a central server (210) via a network so as to be managed and controlled through a central server (210) And a signal lamp system having an interphone function for smooth communication between a central server worker and a field worker.

The traffic light system of the present invention comprises: a traffic light main body (110) disposed on both sides of a crosswalk; A traffic light (130) connected to an external traffic signal controller to control the entry of a pedestrian; A speaker 140 for guiding the sound through the pedestrian; And a camera 120 mounted on the signal lamp body 110 for observing and recording movement of a vehicle and a moving situation of a pedestrian in real time, and the signal lamp system is installed inside the signal lamp body 110 A main control unit 180 for controlling the signal lamp system 100; A first detection sensor (160) installed in the signal lamp body (110) for detecting a person near the crosswalk; And a sensing sensor member 170 installed to face the signal lamp body 110; A second sensing sensor 162 disposed on the sensing sensor member 170 in pairs paired with the first sensing sensor 160 installed in the signal light main body 110 so as to face each other; A sensor control unit 182 disposed inside the signal lamp body 110 to control the first sensing sensor 160 and the second sensing sensor 162; And an interphone 190 for mutual communication between the central server 210 located outside and the field traffic worker.

In addition, the signal lamp system 100 is configured to be remotely controlled by the central server 210 located outside.

The central server 210 is connected to the network communication of the signal lamp system 100, the signal lamp 130, the camera 120, the speaker 140, the main control unit 180, the detection sensors 160 and 162, It is possible to diagnose the state of the interphone 190 and to download and upgrade the control firmware of the main control unit 180 and the detection sensors 160 and 162 of the signal lamp system 100 via the network, And can transmit data related to ON / OFF of illumination, and announcement broadcasting.

In addition, the main control unit 180 includes a video control unit 480 for controlling the camera 120; An audio control unit 460 for controlling the reproduction of the audio data stored in the file; An interphone control unit 470 for controlling the interphone 190; A signal controller for controlling a traffic light; A motor control unit 440 for controlling the operation of the blocking member 150; An input / output control unit 490 for controlling input / output of a control signal; A communication unit 430 for controlling communication with the central server 210; A detection unit 450 for monitoring the system itself; A memory unit 420 for storing information; And a central processing unit (410) for controlling the main control unit (180).

In addition, the camera 120 is configured such that each camera 120 installed in two traffic light systems is operated as a pair to monitor a pedestrian, and the first sensing sensor 160 and the second sensing sensor 162 And the light-emitting sensor and the light-receiving sensor are disposed to face each other so as to form a pair.

In addition, the detection data obtained from the detection sensors 160 and 162 of the signal lamp system 100 located at one side of the crosswalk and the image data obtained by the camera 120 installed at the other signal lamp system body 110 located at the other side of the crosswalk And outputs the acoustic guidance broadcast according to the situation through the speaker 140. The speaker 140 may be a speaker or a speaker.

The signal lamp system 100 further includes a blocking member 150, which is operatively associated with a traffic light and is operated to block a vehicle or a pedestrian from entering the pedestrian crossing.

In the present invention, a plurality of traffic light systems in a jurisdiction are connected to a central server through a network, real-time monitoring of the surroundings of an individual traffic light system, real-time inspection of an individual traffic light system through a central server, And the traffic light system operating system can be upgraded through the network.

The present invention also provides a traffic light system capable of accurately recognizing the position of a waiting pedestrian in order to cross a pedestrian crossing using a camera and a human body detection sensor.

1 is a front view showing the overall configuration of a traffic light system according to an embodiment of the present invention;
2 is a block diagram showing the control structure of the traffic light system 100 of the present invention.
3 is a block diagram showing an internal control structure of the traffic light system 100 of the present invention.
4 is a block diagram showing the configuration of the main control unit 180 of the signal lamp system 100 of the present invention.
5 is a block diagram of a system for detecting the position of a pedestrian and signal states of a traffic light using image data obtained through the camera 120 and sensing data obtained from the sensing sensors 160 and 162. FIG.
6 is a block diagram showing a process in which infrared rays emitted from a light emitting sensor are received by a light receiving sensor.
7 is a side view of the traffic light system 100 of the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Like reference numerals are used for similar elements in describing each drawing. The terms first, second, etc. may be used to describe various components, but the components are not limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

For example, the term "and / or" includes any combination of a plurality of related listed items or any of a plurality of related listed items.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Should not.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a signal lamp system 100 according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a front view showing the overall configuration of a traffic light system according to an embodiment of the present invention. As shown in Fig. 1, the traffic light system of the present invention includes a traffic light main body 110 disposed on both sides of a crosswalk as in the prior art; A traffic light (130) connected to an external traffic signal controller to control the entry of a pedestrian; A speaker 140 for guiding the sound through the pedestrian; And a camera 120 mounted on the signal lamp body 110 for observing and recording movement of the vehicle and movement of a pedestrian in real time.

The signal lamp system of the present invention includes a main controller 180 installed inside the signal lamp main body 110 and controlling the signal lamp system 100; A first detection sensor (160) installed in the signal lamp body (110) for detecting a person near the crosswalk; And a sensing sensor member 170 installed to face the signal lamp body 110; A second sensing sensor 162 disposed on the sensing sensor member 170 in pairs paired with the first sensing sensor 160 installed in the signal light main body 110 so as to face each other; A sensor control unit 182 disposed inside the signal lamp body 110 to control the first sensing sensor 160 and the second sensing sensor 162; And an interphone 190 for mutual communication between the central server 210 located outside and the field traffic worker.

2 is a block diagram showing the control structure of the traffic light system 100 of the present invention. As shown in FIG. 2, the signal lamp system of the present invention is configured to be remotely controlled by the central server 210 located outside. The central server 210 may be a ward office or a police station having jurisdiction over a local government area. The signal lamp system 100 and the central server 210 in the jurisdiction may be connected by a network to monitor the surroundings of the signal lamp system 100 in real time. The central server 210 transmits data necessary for the traffic light operation as needed, and the operating system of the traffic light system can be upgraded through the network.

The LAN configuration of the network connecting the central server 210 and the signal light system 100 according to an embodiment of the present invention is shown in Table 1 as follows: LAN connection protocol IEEE802.3, application protocol HTTP, FTP, transmission protocol TCP, UDP, network protocol IP, IP version IPv4, IPv6, communication speed 10mb / s, 100mb / s, and network configuration can be configured as star type.

division Specifications LAN connection protocol IEEE802.3 Application protocol HTTP, FTP Transport protocol TCP, UDP Network protocol IP IP version IPv4, IPv6 Communication speed 10 Mb / s, 100 Mb / s Network configuration Star

The central server 210 may also perform various diagnostic functions for the signal light system 100. For example, the central server 210 can perform diagnostics on network communication, traffic lights, CCTV, audio, main control, sensor control, and interphone as shown in Table 2 below .

Diagnostic function Contents Network communication diagnosis The central server constantly sends an acknowledgment signal to confirm the maintenance of the communication, whether or not it is transmitting data to the traffic light system. If there is no acknowledgment signal, it is judged that the communication is disconnected. Diagnosis of traffic lights When the central server sends a traffic light confirmation signal, the main control performs its own check and reports the result to the central server. CCTV diagnosis The updated image data is stored in the central server and the screen is displayed on the monitor. If the updated data is not received, it is judged that the CCTV is broken. Audio Diagnostics When the central server sends an audio confirmation signal, the main control performs its own checks and notifies the central server of the results. Main control diagnosis
The central server is connected to two or more signal lamp systems. Therefore, if one of the traffic lights is disconnected from the system, the traffic signal system main control is judged to be abnormal. Sensor control diagnosis The main control sends an acknowledgment signal to maintain sensor control and communication and informs the central server of the result. If there is a problem with the sensor control, the traffic light system stops operating. Maintain the error status. Interphone Diagnostics When the central server sends an interphone confirmation signal, the main control performs its own check and reports the result to the central server.

As described above, the status check between the central server 210 and the signal lamp system 100 is continuously performed. The central server 210 promptly displays the results according to the status diagnosis result of the traffic light system 100 and allows the central server 210 to perform the inspection. Also, the central server 210 transmits the main control unit, the sensor control unit operating system set-up program, the signal lamp lighting time, the control data, and the announcement-related data to the signal lamp system 100 as shown in Table 3.

Transmission function Contents Main / Sensor OS
Setup program transfer Upgrade from the central server by duownloading the main / sensor control firmware of the traffic light system. Transmit signal light time It transmits the lighting time of the red light of the signal lamp, the lighting of the blue color, and the flashing time to the main control. The main control compares the transmitted signal time with the signal time of the traffic signal controller. Control data transmission It transmits effect sound, size, repetition number data to signal light signal. And transmit illumination ON / OFF control signal for time and weather. Send announcement Provide safety announcements to specific pedestrians or all pedestrians.

A traffic signal controller is connected to each traffic light system 100 to guide the continuous flow of the vehicle to minimize the lag of the entire vehicle and to generate control signals necessary for the driver and the pedestrian so as to display the signals on a traffic light.

3 is a block diagram showing the internal control structure of the signal lamp system 100 of the present invention. 3, the main control unit 180 is connected to and controls the camera 120, the interphone 190, the speaker 140, and the traffic light 130, which are other components of the traffic light system. The sensor control unit 182 The presence or absence of a pedestrian and the position of the pedestrian are determined by adjusting the detection sensors 160 and 162 constituted by a light emitting sensor and a light receiving sensor.

4 is a block diagram showing the configuration of the main control unit 180 of the signal lamp system 100 of the present invention. As shown in FIG. 4, the main controller 180 includes a video controller 480 for controlling the camera 120; An audio control unit 460 for controlling the reproduction of the audio data stored in the file; An interphone control unit 470 for controlling the interphone 190; A signal controller for controlling a traffic light; A motor control unit 440 for controlling the operation of the blocking member 150; An input / output control unit 490 for controlling input / output of a control signal; A communication unit 430 for controlling communication with the central server 210; A detection unit 450 for monitoring the system itself; A memory unit 420 for storing information; And a central processing unit (410) for controlling the main control unit (180).

The central processing unit 410 of the main control unit 180 may be configured as shown in Table 4 as an embodiment of the present invention.

division Contents Computing power 150 MHz / 150 MMAC / 300 MFLOPS 32-bit decimal operation (FPU) Memory RAM 68KBytes, FLASH 512KBytes Extern Interface EMIF MAX 4MB, 16bit / 32bit DMA 6ch TIMER 3 32bit CPU Timer PWM HRPWM 6ch (150psec), PWM 12ch (6.67nsec) CAP / QEP 6 pieces / 2 pieces ADC 12bit / 16ch 12.5MSPS Communication I2C, eCAN, UART, SPI, Ethernet (LAN) Voltage core 1.9V / IO 3.3V Temperature range A version -40 to 85 degrees, S version -40 to 125 degrees

The memory unit 420 configured in the main control unit 180 is used for storing data and the flash RAM stores a guide sound and various information sent from the central server 210. The RAM is used when the signal lamp system 100 operates The backup RAM stores the internal environment of the pedestrian safety system. The specifications of the memory according to an embodiment of the present invention can be configured as shown in Table 5. [

division Contents
Flash RAM Flash RAM 8bit 32GB Read / Write 24MB / s Temperature range -40 to +80 degrees
RAM RAM 16bit 1MByte SRAM Operation speed 8 ns IO Parallel Temperature range -40 to +80 degrees
Backup RAM RAM 8bit 4Mbit Flash RAM Read / Wirte 75MHz IO Serial Temperature range -40 to + 125 degrees

The configuration of the communication unit 430 of the main control unit 180 according to an embodiment of the present invention can be configured as shown in Table 6 below.

division Contents


eCan2.0B
rescue Multi-Master Structure (CSMA / CA) Communication speed Up to 1Mbps Number of communication data 8 Bytes Protocol / Error Handling Hardware Power consumption Low Power Power mode support Frame Type Data frame, Remote frame, Error frame, Overload frame Environmental impact Strong in Noise Environment
UART Communication method Asynchronous serial (Universal Asynchronous Receiver / Transmitter) Communication speed Up to 20 Kbps Communication distance 15m Transmission method Full Duplex


LAN LAN connection protocol IEEE802.3 Transmission protocol HTTP, FTP Network protocol IP IP version IPv4, IPv6 Communication speed Supports 10Mb / s and 100Mb / s Network configuration BUS

The motor control unit 440 of the main control unit 180 controls the motor for operating the flapper blocking member 150 for the safety of the pedestrian. The specifications of the motor for operating the blocking member 150 in one embodiment of the present invention can be configured as shown in Table 7. [

division Contents Driving method PWM (Pulse With Mdulation) Resolution High Resolution (150ps) Drive Full Bridge Drive Engine DC Motor

The configuration of the speaker 140 controlled by the audio unit 460 of the main control unit 180 is used to reproduce the audio data stored in the file and the specification of the audio according to the embodiment of the present invention is shown in Table 8 can do.

division Contents Maximum output MAX 20W support FILE MP3, wmv, ogg, mpc ... Bitrate 128 Kbps Sample Rate 44.1KHz Bit 16 Filter Low Jitter PLL

The input / output unit 490 of the main control unit 180 receives an operation of a traffic light controller by a traffic worker or receives a signal of a traffic signal controller or outputs an output. The interphone used in the signal light system 100 according to an exemplary embodiment of the present invention may be configured as a short channel mutual communication type. The interphone can be used for intercommunication between the central control room and the field traffic workers.

And sends or blocks the CCTV video signal to the central processing unit 410 through the video switching included in the video portion 480 of the main control portion 180. The detection unit 450 of the main control unit 180 monitors the voltage, current, temperature, and humidity of the signal lamp system 100 to allow the system to operate stably.

5 is a configuration diagram of a system for grasping a position of a pedestrian and a signal state of a traffic light using image data obtained through the camera 120 and sensing data obtained from the sensing sensors 160 and 162. FIG.

5, in one embodiment of the present invention, the detection data obtained from the detection sensors 160 and 162 of the traffic light system A located at one side of the pedestrian crossing and the other traffic light system B located at the other side of the pedestrian crossing And combines the image analysis data obtained from the installed camera 120 to grasp the position of the pedestrian and the signal state of the traffic light.

The signal lights are operated in pairs. In particular, CCTV monitors pedestrians and passing cars in the direction of the traffic lights across the street. CCTV has its own IP, so it can communicate directly with the Internet. However, for stable operation of the traffic light system, the main control unit 180 controls ON / OFF of data transmission. In the central server 210, the image sent from the CCTV is analyzed to determine the position of the pedestrian. At this time, since the image sent from the CCTV is the pedestrian image on the opposite side, the analyzed contents are sent to the main control section opposite to the one.

6 is a block diagram illustrating a process in which infrared rays emitted from a light emitting sensor of the first sensing sensor 160 are received by a light receiving sensor of the second sensing sensor 162. FIG. Infrared rays are emitted from the light emitting sensor connected to the ON / OFF control unit of the sensor control unit 182 and the infrared rays are received by the light receiving sensor connected to the external sensor control unit 182 formed in the main control unit 180.

Draw a safety line at the entrance of the crosswalk and install an infrared sensor along the safety line. The infrared ray detection sensor is a group of a light emitting sensor of the first sensing sensor 160 and a light receiving sensor of the second sensing sensor 162 facing each other and is deteriorated due to weather deterioration such as snow, To prevent this, install more than two sets of sensors. The installation height of the sensor was set not to exceed 1M on the basis of the children who can walk.

By combining the CCTV image analysis data installed on the opposite side and the sensing operation of the infrared sensor, the safety position of the pedestrian is determined, and the signal state of the pedestrian is combined with the signal state of the traffic light to output the sound according to the situation.

7 is a side view of the traffic light system 100 of the present invention. 7, when it is determined that a pedestrian or other dangerous situation has occurred in the central control room, the central server issues an operation command to the traffic light system 150 to operate the blocking member 150 installed at one side of the traffic light system It is possible to prevent the vehicle from passing.

100: traffic light system 110: traffic light main body
120: camera 130: traffic light
140: speaker 150: blocking member
160: first sensing sensor 162: second sensing sensor
170: Detection sensor member 180:
182: Sensor control unit 190: Interphone
210: central server 400:
410: central processing unit 420: memory unit
430: communication unit 440: motor control unit
450: Detection unit 460: Audio control unit
470: Interphone controller 480: Video controller
490: Input / output control unit 510: Internal sensor control unit
520 external sensor control unit 530 camera control unit

Claims (9)

A traffic light main body 110 disposed on both sides of the crosswalk; A traffic light (130) connected to an external traffic signal controller to control the entry of a pedestrian; A speaker 140 for guiding the sound through the pedestrian; And a camera (120) mounted on the signal lamp body (110) for observing and recording the movement of the vehicle and the moving situation of the pedestrian in real time,
A main control unit 180 installed in the signal lamp main body 110 to control the signal lamp system 100; A first detection sensor (160) installed in the signal lamp body (110) for detecting a person near the crosswalk; And a sensing sensor member 170 installed to face the signal lamp body 110; A second sensing sensor 162 disposed on the sensing sensor member 170 in pairs paired with the first sensing sensor 160 installed in the signal light main body 110 so as to face each other; A sensor control unit 182 disposed inside the signal lamp body 110 to control the first sensing sensor 160 and the second sensing sensor 162; And an interphone 190 for intercommunication between the central server 210 and the on-site traffic worker,
The signal lamp system 100 is configured to be remotely controlled by the central server 210 located outside and the central server 210 can control the network communication of the signal lamp system 100, The central server 210 is configured to diagnose the states of the camera 120, the speaker 140, the main control unit 180, the sensing sensors 160 and 162, and the interphone 190, The control firmware download and upgrade of the main control unit 180 and the detection sensors 160 and 162 of the control unit 100 and the data related to the signal lighting time, the sound effect according to the signal light, ON / OFF of the illumination, In a traffic light system,
The main controller 180 includes a video controller 480 for controlling the camera 120;
An audio control unit 460 for controlling the reproduction of the audio data stored in the file;
An interphone control unit 470 for controlling the interphone 190;
A motor control unit 440 for controlling the operation of the blocking member 150;
An input / output control unit 490 for controlling input / output of a control signal;
A communication unit 430 for controlling communication with the central server 210;
A detection unit 450 for monitoring the system itself;
A memory unit 420 for storing information; And
And a central processing unit (410) for controlling the main control unit (180).
delete delete delete delete delete delete The method according to claim 1,
The image data obtained by the camera 120 installed in the other signal lamp system body 110 located on the other side of the crosswalk and the detection data obtained by the detection sensors 160 and 162 of the signal lamp system 100 located at one side of the crosswalk And outputs the sound guidance broadcast according to the situation through the speaker (140).
The method according to claim 1,
The traffic light system (100) further comprises a blocking member (150) operatively associated with the traffic light and operative to block a vehicle or a pedestrian from entering the crosswalk.

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