KR200428553Y1 - The unit of detecting waiting walker a junction road around area to safety - Google Patents

Abstract

According to the present invention, when a pedestrian detection control device (hereinafter referred to as "sensing control device") of the present invention detects a pedestrian waiting for a signal to cross a pedestrian crossing in front of a driver who is driving or waiting for a signal, traffic A signal change interrupt is requested to the signal controller 30 so that the pedestrian can cross, and at the same time, the driver information display board 100 installed at the driver's direction of travel is notified of safety driving information (the presence of the crosswalk pedestrian), or there is no pedestrian. In this case, the vehicle center priority signal is continuously applied to the traffic signal controller 30 to provide smooth vehicle communication.

Installation environment and configuration of the device is as follows. First of all, the installation environment is a cross section in an environment where the traffic signal controllers 30 are interoperable with each other over a certain section (small section: less than 10 km distance, medium period: 10 km to 20 km distance, large section: more than 20 km distance). For the sidewalk, the area around the crosswalk (the detection area is set to a radius of 10m as a base and can be adjusted variably). Devised device 20 is a sensor 20-10 which is a means for detecting the presence or absence of pedestrians; And a sensing control apparatus 20 which is means for determining and processing the sensing information acquired by the apparatus 20-10 above. And change the signal according to the signal change interrupt request information applied to the detection unit 30-14 of the traffic signal controller 30 according to the information processing result of the apparatus 20, or maintain the signal centered on the vehicle. A traffic signal controller 30 which is a means for responding to a request; At the same time, the pedestrian information display electronic display device 100 is a means for displaying pedestrian information. This provides information to both pedestrians and drivers for safe walking and safe driving, and furthermore, provides drivers with information to overcome visual limitations in detecting a smooth traffic environment and especially pedestrians crossing at night. It relates to a crosswalk pedestrian pre-detection and safe driving warning device.

Pedestrians, traffic signal controllers, crosswalk safety driving, safety accidents, pedestrian detection sensors

Description

The unit of detecting waiting walker a junction road around area to safety}

Figure 1. General pedestrian detection method

2 is a block diagram of the automatic pedestrian detection in the present invention

3 is a block diagram of the detection control device of the present invention

4. Standard traffic signal controller

5. Operation flow chart of the device of the present invention

*** Explanation of symbols for the main parts of the drawing ***

20: Pedestrian detection control device

    20-1: central processing unit

    20-2: Program memory

    20-4: Data memory

    20-6: Signal Analysis Processing Unit

    20-8: Control Program

    20-10: detection sensor

    20-12: signal transmission unit

    20-15: Operating Program

    20-18: Wired Communication Interface

    20-20: Emergency Button

30: traffic signal controller

100: pedestrian information display billboard

The technical field of the present invention is interlocking between traffic signal controllers 30 for smooth vehicle progression for a certain section (small section: less than 10km distance, medium period: 10km to 20km distance, large section: more than 20km distance). It is a technical field to prevent safety accidents by detecting and providing information to pedestrians waiting for pedestrian crossing or pedestrian crossing in the environment in advance. Until now, the development of vehicle-oriented systems has been more common than methods or devices to protect pedestrians. For example, in the case of operating the linkage system for a certain section for smooth traffic communication, it is possible to give the signal to the vehicle center first, or to operate the signal system after calculating the constant speed of the vehicle. It is not convenient for pedestrians due to lack of information, and there are no pedestrians, but the pedestrian green light turns on. Rather, there are time and economic problems associated with vehicle congestion and fuel loss. In addition, as shown in Figure 1, it is easy to see the button (1) installed in the traffic light facility around the crosswalk. In the above-described apparatus 1, the traffic signal controller 30 gives priority to the crosswalk traffic lights only when a waiter who wants to cross the crosswalk presses a button, and the vehicle does not have a pedestrian (when the button is not pressed). Operate in a way that prioritizes traffic. However, in the above method, when the pedestrian waiting at the crosswalk is the first person to visit the area or does not easily recognize the button 1 such as an elderly person, a child or a disabled person, the traffic light only switches to the pedestrian signal. It has a problem of waiting.

The present invention solves the problems of the prior art described above and at the same time cross-walk from the sensing control device 20 installed around each crosswalk for a certain section (divided into large, medium and small distance sections) The traffic signal system is to be operated by acquiring the waiting detection information, and in order to implement the above technology, a high sensitivity and a high degree of technology are required to accurately distinguish the authenticity of the acquired information. This is because if the above technical problem is not solved, a case worse than a result of not using the device of the present invention occurs. The present invention has to solve the technical problem in two aspects. First, it is necessary to determine the needs of directional high-sensitivity sensor technology that can accurately detect pedestrians, and whether the detected object is a person, an animal or an object. Control technology that can do is absolutely required. Among the related sensors, the microwave sensor, among the sensors, emits microwaves (24 GHz band) to an object and uses the Doppler effect method to detect the difference between the steady-state frequency and the reflex frequency of the pass-detected object. There is a sensing sensor that detects the existence, distance, and speed of an object by detecting it. Next, the ultrasonic sensor detects the existence, distance, speed, etc. of the object by using the difference in time of returning the ultrasonic wave (band above 20KHz) to the object. In addition, the laser sensor is located in parallel with the light emitter and the receiver, and emits light (900nM band) at an arbitrary point from the light emitter. As a technique using a divergence scheme, a problem can be solved by using a combination of a method of generating a trigger pulse signal by the divergence scheme and determining the existence, distance, and speed of an object.
Second, in the case of an intersection, a control program for acquiring and grouping information on the presence of pedestrians at several crosswalks and allocating time so as not to deviate with the interlocking signal between the traffic signal controllers 30 operating over a certain section (20) There is a need for a technical problem to develop the sensing control apparatus 20 in which -8) is embedded.

In order to solve the above technical problem, when constructing a pedestrian safety device according to the device of the present invention, the pedestrian using the crosswalk can be protected as much as possible. In particular, the driver must observe the signal blindly on a road without pedestrians at night. Although there are no problems or pedestrians, signals are allocated to pedestrian signals on crosswalks, so that problems such as traffic congestion, safe driving, and environmental pollution can be solved at one time.

When the device of the present invention is installed over a certain section (less than 10km distance, 10km ~ 20km distance section, more than 20km distance section) can effectively support traffic communication. In order to achieve the above object, the configuration and role between the devices will be described based on the representation shown in FIG. 2 as follows.

2 is a detection sensor unit 20-10 which is a means for detecting a pedestrian waiting in a waiting area of a crosswalk; and a traffic signal controller according to whether or not the integrated pedestrian information obtained from the apparatus 20-10 is detected. A program storage device 20-2 and other detailed devices 20-2, 20-4, 20-6, 20-12, which store programs necessary to operate to assign the pedestrian priority signal or the vehicle priority signal to 30; 20-18), and a detection control device 20 which is a means for overseeing and determining the overall situation; and signal change interrupt information generated based on the optimum signal change information determined and determined by the device 20. Traffic signal controllers 30 and 30-12, which are means for controlling and managing traffic lights only in the vehicle center when there is no interrupt change signal in the apparatus 20 when the control unit receives a traffic light for crossing pedestrians or receives an interrupt change signal. On Show the safe operation and use to maintain smooth traffic of pedestrians match the information display 100 by means of letters and ads that warn driver safety aware that pedestrians waiting for the call; The representative figure constituting the present invention is shown.

In FIG. 3, the detection control device 20, which is the core device of the present invention, includes a sensor 20-20 for detecting a pedestrian waiting around the crosswalk (radius 10 m); And controlling the infrastructure devices 20-2, 20-4, 20-6, 20-12, and 20-18 necessary for analyzing the sensed information obtained by the device 20-10. A central processing unit 20-1, which is a means; And a program memory unit 20-2 which is a means for storing program information related to the operation of the detection sensor 20-10 and initial information related to the program; And initial setting data required for the device 20 to operate (for example, initial setting values of a sensing sensor operating time, a sensing area, etc.), and the recorded data is also wireless or wired from an external source. A data memory 20-4 which is configured to set or update internal data by communication data and which is means for storing basic data; And a signal analysis processing unit which is means for analyzing whether the information acquired by the terminal apparatus 20-10 is the valid data, that is, whether the pedestrian is detected or not, by the instruction of the central processing unit 20-1. (20-6); A control program (20-8) which is a means for storing a control program and control data related to a communication protocol with the traffic signal controller (30) by embedding a control program of the apparatus (20); And a signal transmission unit 20-12 which is a means for transmitting a signal to the traffic signal controller 30 based on the processing result of the apparatus 20-6. And a signal change interrupt request from the two devices 20 and 30 in the signal analysis processing unit 20-6 to store a process to be performed by the detection control device 20, and means for proceeding according to an internal operating procedure. An operating program (20-15) necessary for operating the microprocessor; Wired / wireless communication interface, a means for performing interface functions for communication with external devices such as emergency button (20-20) and detection sensor (20-10), which is a means to respond to an emergency situation due to a failure of a detection sensor and the like. Part 20-18; And the like.
FIG. 4 processes the pedestrian priority signal only when there is an interrupt request from the device 20 in transmitting the detection information processed by the detection control device 20 to the detection unit 30-14 of the traffic signal controller 30. It is configured so that, if there is no interruption in the apparatus 20 relates to a traffic signal controller 30 which is a means for performing the function of maintaining the normal traffic light manifestation system in the center of the vehicle. That is, the signal is input through the communication interface of one of the loop detection boards 30-14 of the traffic signal controller 30 immediately after obtaining the information from the detection control apparatus 20, but not immediately requesting a signal change interrupt. The apparatus 20 of the group is grouped based on the interrupt request data, and processes an optimal signal processing routine to request a signal change interrupt instruction to the traffic signal controller 30 for signal change. At this time, only the traffic signal controllers 30 that have received a signal change interrupt from the detection control device 20 change the signal to operate, and the traffic signal controller 30 which is not instructed keeps the signal change of the vehicle center as it is. It performs the function of maintaining traffic communication. In order to understand the components and functions of the traffic signal controller 30, a typical standard traffic signal controller 30 is configured as follows. Main control unit (MCU: 30-55) and signal control unit (SCU: Signal Control Unit, 30-8) are each composed of a separate central computing unit (CPU 30-16) and MCU (30-55) Mainly performs traffic information processing such as detector data, control algorithm processing, communication with central center of control center, operator input device (MMI: Man Machine Interface, 30-30), etc. . The signal driver (SCU) 30-8 is responsible for turning on and off the signal lamp according to the command of the main controller, and is a fail-safe control function that performs basic signal output control when a failure of the main controller occurs. Main control unit 30-55 (MCU) A unit computing system that plays a pivotal role in the traffic signal controller 30, and includes one or more CPU boards 30-16 and 1-8 loop detector boards 30-14. ) And DC power supply, communication modem (30-40) and various option boards (30-60) are connected by one bus system if necessary. And it refers to the CPU (30-16) mounted on the main control unit (MCU: 30-55) and plays a pivotal role in the creation and operation of signal plans, database management, processing of detection information, communication with external devices And important data related to signal operation keeps data always in case of power failure by memory backup function. Modem (Modulator-Demodulator, 30-40) is a frequency modulation and demodulation device is a card type communication device that enables data communication with the control center central device during the traffic signal control period. The Loop Detection Unit (LDU) 30-14 is a traffic signal controller (30) that detects the presence, speed, and other information of a vehicle after installing a vehicle detection sensor by road laying, roadside, or structure installation. Screen display device 30 which is a means for inputting or modifying data required for the traffic signal controller 30 and a keyboard installed in front of an operator input device (MMI: Man-Machine Interface, 30-30). -4), the operator can easily check the data. In addition, it performs a function of expressing the operation state of the traffic signal controller 30 through the status display lamp or the screen display device 30-4, and the expression of information should be able to be expressed in the form of text or graphics. Signal control unit (SCU: 30-8) refers to a series of devices that perform the electrical output of a signal lamp and monitor the output result by receiving the signal progress command from the main controller (MCU) 30-55. The controller board 30-70 indicating the registration output by the controller, the luminaire driving device (LSU) 30-90 which controls and monitors the output for driving the traffic light, and the flasher 30-80 which performs the flashing control in case of emergency. The device is connected to the system bus. A feedback circuit (hereinafter referred to as feedback signal) circuit for physically evaluating the output result of the power supply device 30-50 and the traffic light 30-12. In addition, the signal driver 30-8 includes a series of input means for accommodating a police officer's manual operation and a pedestrian input means, and the like, and includes an internal communication means for communication with the main controller. Controller board (30-10) Based on the signal driving data of the main control unit 30-55, the luminaire is controlled by directly controlling the luminaire driving device (LSU, 30-90) according to the time progress, and the traffic light lighting state Flashes red or yellow traffic lights when a contradiction occurs. By verifying the data necessary for driving traffic lights, the flasher 30-80 operates when an abnormal output or contradiction of the traffic signal controller 30 occurs. The controller 30-70 detects an inconsistent lighting state of an intersection signal and abnormal output detection of a light bulb, an abnormal output inspection of a red light, a power failure, control of a flasher 30-80 and a luminaire, and a signal driver power management (30-70). 50) and so on. Through the serial communication terminal (30-50) receives the information on the present combination of the current progress from the main control unit (30-55) to express the manifestation, and performs the function of monitoring the output state of the bulb to determine the contradiction state. The flasher unit (FLU: Flasher Unit 30-80) has a DC power supply fault, a controller board (30-70) fault, a flashing instruction from the controller (30-70), or a flashing signal from the lamp driving unit (LSU) 30-90. When there is a flashing traffic light by an independent power supply. The LSU (Load Switch Unit, 30-90) directly controls the power supplied to the signal lamp, and generates a feedback signal for the control result to provide the controller board. The LSU unit 30-90 should be usable at 110V and 220V and should not be affected by irregular changes in the driving environment. In the power control circuit, the dimming control function to adjust the brightness of the lamp should be provided and heat dissipation should be considered. In addition, for convenient maintenance, it is necessary to have a condition in which the failure of the luminaire driving device can be partially (substrate) replaced during normal operation of the traffic signal controller 30. In more detail, each device includes a memory device 30-2, a CPU 30-16, a clock device 30-6, a signal driver 30-8, and a contradiction signal detection 30-10. ), A traffic light 30-12, an LCD device unit 30-4, a loop detection board 30-14, a serial communication interface 30-18, and a digital input interface 30-20. Clock device (30-6) for receiving and outputting the current time information from the satellite, and manages the current time, the signal driving period input through the data transmission communication interface with the clock device (30-6) to control the overall device A memory device 30-2 for storing control and arithmetic programs used in the CPU 30-16 and the device 30-16, and for transmitting signals output from the CPU 30-16. LCD device unit 30-4 including an output interface and a keypad and an indicator for inputting a program and data to the storage device 30-2 and a signal driver 30-8 driven according to a signal output from the output interface. By the traffic signal controller 30 includes a traffic light (30-12) for driving the output signal. Hereinafter, the traffic signal controller 30 will be described in detail with reference to the accompanying drawings. The CPU 30-16 stores programs and data in the storage device 30-2, controls the operation of the traffic signal controller 30 using the stored programs and data, and communicates with external devices. The memory device 30-2 of the traffic signal controller 30 stores control and calculation programs used by the central processing unit 30-16, and stores information related to the present. The manifest data stored in the memory device 30-2 of the traffic signal controller 30 is input through the keypad of the LCD device unit 30-4. It has a keypad and an indicator (LCD) 30-4 for displaying input data. Data can be input to the storage device 30-2 via the personal computer or the terminal for the purpose of setting data for the purpose of mutual communication. At this time, the personal computer or the terminal inputs data through the digital input interface 30-20. The digital input interface 30-20 may be configured using a serial communication interface 30-18 which is commonly used. The serial communication interface 30-18 includes an output port as an interface for outputting a control signal from the central processing unit 30-16. The signal output through the serial communication interface 30-18 is input to the signal driver 30-8. The signal driver 30-8 controls to generate a specific type of signal according to the control signal.

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5 is a diagram illustrating the utilization according to the configuration of the present invention, the process of detecting the pedestrian waiting in the crosswalk in the detector to safely cross the vehicle pedestrian center in the traffic light control of the center, the driver crosses the front A floor chart for safe driving is performed by recognizing that there is a signal waiting pedestrian in advance.

Based on the above description, the operation of the present invention is as follows. As shown in FIG. 4, the traffic signal controller 30 repeatedly displays green, red, and yellow signals according to a predetermined intersection signal at a predetermined interval, or emits a yellow blinking signal. It is expressed repeatedly. The present invention is to install a sensor 20-10 installed around the crosswalk to detect the pedestrian waiting to use the crosswalk. At this time, when the pedestrian enters into the detection area and waits around the crosswalk in each direction, the detection sensor 20-10 operates the detection pulse signal, and the detection control device 20 detects the detection result by the traffic signal controller 30. Request signal change interrupt. If the pedestrian is not detected by the pedestrian detection sensor in each direction, the traffic lights 30-12 are continuously displayed in the center of the vehicle to operate the vehicle without interrupting the flow of the vehicle. The operating method in the general state of the present invention is when no pedestrian is detected by the sensor 20-10 installed in the crosswalk detection area in each direction, in which case the traffic light 30-12 of the vehicle center is continuously turned green. Express it and operate without interrupting the flow of the vehicle. After displaying the signal information, when the green signal is turned on and there is no waiting pedestrian inside the detection area of another crosswalk, the traffic light also returns to the operating system that continuously turns green to operate the traffic light. In addition, when waiting pedestrians are detected by the pedestrian detection sensor 20-12 in the crosswalk detection area of the road, the waiting time after a predetermined time or more (one manifestation signal cycle) is determined in advance (for a driver on the road, In order to prevent the traffic accident by informing information about the pedestrian through 100), the green signal of the traffic light 30-12 of the vehicle center is cut off, and the pedestrian signal for a predetermined time period is displayed. If the pedestrian signal cycle is completed and there are no other pedestrians, the traffic light is returned to the operating system that continuously turns on the traffic light of the vehicle center. In normal operation, the signal of the center of the vehicle is always lit in green, and if the pedestrian is not detected, the pedestrian crossing signal is always maintained so that the red signal is always lit, and the pedestrian for crossing the crosswalk detects the pedestrian. The present invention relates to an apparatus for automatically detecting a pedestrian and controlling the traffic signal controller including a means for detecting a pedestrian entering into an area and detecting the pedestrian. The facilities for detecting the pedestrians entering into the crosswalk detection area of the present invention are as follows. First, the pedestrian detection sensor 20-10 of the present invention is installed on an existing pedestrian traffic light structure having a height of 5 to 7 m and an arm of 5 to 15 m, or if there is no existing traffic light structure, the new structure may be manufactured as described above. Install. At this time, the part of installing the pedestrian detection sensor on the arm of the structure can be arbitrarily adjusted according to the delivery width to be detected. In addition, the detection area is to be set near 3 to 10m from the crosswalk side, and when the detection area is set, it is installed by adjusting the installation height and angle of the pedestrian detection sensor.

As a device for detecting a current pedestrian, a method of allocating a pedestrian present signal by inputting a waiting signal to a detection unit of a traffic signal controller using a pedestrian waiting button 1 is most commonly used. However, in the case of the device (1 in FIG. 1), it is inconvenient to easily find and press a button when the child, the elderly, or the area in which the device is installed is the first person. In addition, the above apparatus has a limitation in that it can warn the vehicle driver that there is a crosswalk waiting in advance. And even when there are no pedestrians to cross the pedestrian crossing, the pedestrian traffic lights operate to stop unnecessary vehicles, causing a lot of inconvenience.

When the installation and operation of the device of the present invention not only solves the above problems, in particular, there is an effect to ensure a long-distance vision to the driver at night and to prevent safety accidents.

Claims (3)

Means for controlling traffic lights around a crosswalk (variable adjustment based on a radius of 10M) over a certain section (smaller than 10KM distance, medium term: 10KM to 20KM distance, large section: more than 20KM distance) Phosphorus traffic signal controller 30; A plurality of detection sensors 20-10 which are means for detecting a pedestrian; And a detection control device 20 capable of determining the presence or absence of a pedestrian based on the information obtained by the device 20-10 and requesting a signal change interrupt to the device 30. (20) reflects the environment of the interlocking state to the maximum reflects the synchronization of the plurality of traffic signal controllers 30 at the same time, and at the same time to display the display board 100, which is a means for expressing pedestrian information according to the presence or absence of pedestrian detection It is configured to implement safety devices so that pedestrians can safely cross the pedestrian crossing, and provide drivers with information to overcome visual limitations in detecting a smooth traffic environment and especially pedestrians crossing at night. Sense control device that automatically detects pedestrian walkway signal and operates traffic signal controller. Traffic signal controller 30 that performs the function of expressing the information of the traffic light in a plurality of places over a certain section (small section: less than 10km distance, medium period: 10km ~ 20km distance, large section: more than 20km distance), crosswalk The sensor 20-10, which is a means for detecting a pedestrian waiting for a signal to pass through, and the pedestrian area around the crosswalk (which can be variably adjusted based on a radius of 10 m) obtained by the apparatus 20-10. A detection control device 20 which is a means for requesting a signal change interrupt when the pedestrian authenticity is determined based on the information and recognized as a pedestrian; and a signal in the crosswalk from the detection control device 20 installed in the plurality of crosswalks as described above. Collects and processes pedestrian information waiting for the request and requests a signal change interrupt to the corresponding traffic signal controller 30 according to the result of the collection, and to cross the road ahead. By displaying and managing the pedestrian is detected on the pedestrian information display signboard 100, and implements a safety device to safely cross the pedestrians, pedestrians to smooth traffic communication environment, especially pedestrians crossing at night A device for operating a traffic signal controller by automatically detecting the pedestrian crosswalk signal waiting pedestrian, characterized in that to provide information to overcome the visual limitations in detecting. The method of claim 2, It consists only of the traffic signal controller 30, the detection control device 20 and the pedestrian information display signboard 100, the pedestrian is detected in the device 20 in the important pedestrian crossing and the result is sent to the traffic signal controller 30. By requesting a signal change interrupt to induce a signal change and at the same time the information indicating that the pedestrian crossing is being displayed on the pedestrian information display signboard 100 in front of the vehicle, if the driver ahead of the safe driving and no pedestrian traffic signal controller 30, the traffic signal controller to automatically detect the pedestrian crossing signal waiting pedestrian, characterized in that configured to enable manual operation using the emergency button (20-20) when the device 20 does not operate. Detection control device to control the.

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