KR101169756B1 - A signal generating device and method for traffic signal apparatus - Google Patents

Abstract

PURPOSE: A signal driving apparatus and method for controlling signal driving of a traffic signal apparatus using a battery are provided to control on/off and brightness of a traffic signal according to traffic conditions and time. CONSTITUTION: A traffic condition receiver(210) receives detected traffic conditions. A time measuring unit(220) measures the current time. A signal on/off driving unit(230) turns on or off a traffic signal. A signal driving control unit(240) transmits a driving signal to the signal on/off driving unit to turn on/off the traffic signal or control the brightness of the traffic signal when power is not supplied by a main power source.

Description

A signal generating device and method for traffic signal controlling a traffic light driven by a battery {A signal generating device and method for traffic signal apparatus}

The present invention relates to a signal driving device and a method of driving a traffic signal provided by a power source charged in a battery when the main power is not supplied to a traffic signal lamp having a main power source and a battery to turn on a traffic light.

In addition, the present invention relates to a signal driving device and method for controlling traffic light intensity of the traffic light or flashing the traffic light according to the traffic volume and time zone when the main power is not supplied.

In general, traffic lights installed in intersections or crosswalks are controlled and driven by a traffic signal controller. The traffic signal controller is a main control unit (MCU), a signal control unit (SCU), an independent device mounting unit such as an image detector, and an MMI (man machine interface) for operator connection. unit), a terminal plate for processing input / output signal connection with an external device, and other auxiliary devices, but may vary depending on the intended use.

In this case, the main control unit is composed of a power supply unit for supplying AC power to the traffic signal controller, a communication unit for communication with the traffic control center, a vehicle detection unit for input of the vehicle detector, and optional boards for expansion functions. Can be.

However, according to the related art, when the traffic signal controller for supplying power to the LED traffic light installed on the road does not operate as a power failure lamp, a situation may occur in which the LED traffic light operated by receiving power from the traffic signal controller does not operate. There is a problem that can be. If the traffic light does not operate, there is a problem that a driver who is driving on a roadway may cause no signal to travel, causing traffic accidents and serious traffic confusion.

In order to solve this problem, technologies for providing a power supply or a battery in a traffic signal controller are disclosed in Korean Patent No. 10-0893782 (hereinafter, Prior Art 1), Korean Patent Publication No. 10-2005-0105877 (hereinafter, Prior Art 2) , Korean Patent Publication No. 10-2010-0108670 (hereinafter referred to as prior art 3), Korean Patent Publication 1995-0015173 (hereinafter referred to as prior art 4) and many others are disclosed. The prior art includes a reserve power source such as a battery, and charges the reserve power when the main power is supplied. And when the supply of the main power is interrupted relates to a technology that receives power from the charged backup power.

In particular, prior arts 1 and 4 control the yellow light to be driven by an alarm light (or yellow light to be flashing) when powered from a charged battery. That is, since the traffic light is temporarily operated until the main power is restored, the traffic light only serves as an emergency light. However, if there is a lot of traffic such as commute time and the intersection is crowded, traffic control cannot be controlled only by flashing lights. Therefore, there are also problems that cause extreme traffic jams.

However, there is an advantage that the power consumption can be reduced when the traffic light is used as a flashing light without the normal lighting. For example, if it is lit for 1 second and blinked for 1 second, the power consumption is reduced to 50% than normal.

On the other hand, the power of the traffic light can be reduced by adjusting the dimming intensity of the traffic light. A technology for controlling traffic light dimming is disclosed in Korean Patent No. 10-0961675 (hereinafter, Prior Art 5) and Korean Patent No. 10-1065437 (hereinafter, Prior Art 6). However, the prior art is a technique for controlling the dimming of the traffic light mainly in accordance with the ambient light environment. For example, the technology detects day and night by detecting the intensity of daylight, or detects a misty environment by sensing the climate, and adjusts the dimming intensity accordingly. In other words, the above prior arts are not purely power saving technologies.

Power-saving technology is very important when lighting signals with batteries. This is because the LED lamp used to turn on the traffic light consumes a lot of power. For example, even if you install a battery that is the size of a traffic light controller, the battery can only last about 2 hours if you normally drive the traffic light.

Therefore, traffic light driving control technology that can grasp the traffic situation and cope with the situation and save the battery is urgently needed.

Korea Patent Office Registered Patent Publication No. 10-0893782, Korean Patent Office Publication No. 10-2005-0105877, Korean Patent Office Publication No. 10-2010-0108670, Korean Patent Office Publication No. 10-1995-0015173, Korea Patent Office Registered Patent Publication No. 10-0961675 Korea Patent Office Registered Patent Publication No. 10-1065437

SUMMARY OF THE INVENTION An object of the present invention is to solve the problems described above, and provides a signal driving device and method for controlling a traffic light of a traffic light or flashing a traffic light according to the traffic volume and time zone when the main power is not supplied. will be.

In order to achieve the above object, the present invention relates to a signal driving device and a method of a traffic signal which is driven by a power source charged in a battery when the main power is not supplied to the traffic signal lamp having a main power source and a battery to turn on a traffic light. As a traffic volume receiving unit for receiving the detected traffic; A time measuring unit measuring a current time; A signal light driver to turn on or flash the signal light; And a signal driving control unit which transmits a driving signal to the traffic light driving unit according to the traffic volume and the current time when the main power is not supplied, thereby adjusting the dimming intensity of the traffic light or flashing the traffic light.

In addition, the present invention is a signal driving device of a traffic signal, wherein the signal driving control unit is divided into a signal (hereinafter referred to as a normal signal) to turn on the traffic light by the signal drive data and a signal (hereinafter flashing signal) to blink the traffic light Transmit a drive signal, and adjust the dimming intensity of the traffic light by dividing the dimming intensity of the traffic light into a level when the main power is supplied (hereinafter referred to as normal intensity) and a level lower than the normal level (hereinafter referred to as power saving intensity). Characterized in that.

In addition, the present invention, in the signal driving device of a traffic signal, the signal driving control unit compares the traffic volume with a large amount (hereinafter referred to as a congestion traffic level) and a small case (hereinafter referred to as a traffic pass level) compared to the reference amount, the current time is It is characterized by controlling traffic light driving by dividing into a predetermined congestion time zone (hereinafter referred to as congestion time zone) and not belonging to a congestion time zone (hereinafter referred to as a busy time zone).

In another aspect, the present invention provides a signal driving device of a traffic signal, characterized in that the signal driving control unit controls the driving of the traffic light with a normal signal of normal intensity when the main power is not supplied at the congestion passage level or during the congestion period.

In addition, the present invention is a signal driving device of the traffic signal, the signal driving control unit is the main power is not supplied, when the congestion traffic level of the congestion traffic level normal signal of the normal strength, when the busy time of the Hansan traffic level As a flashing signal of the power saving intensity, in the case of a congestion time zone of the busy traffic level or a busy time zone of the congestion traffic level, traffic light driving is controlled by a blinking signal of the normal intensity or a normal signal of the power saving intensity.

In another aspect, the present invention provides a signal driving device of a traffic signal, the device further comprises a control mode input unit for receiving any one of an automatic control mode, a dimming control mode, a flashing control mode, and a combined control mode, the signal When the main power is not supplied, the driving control unit controls the control mode by any one of the control modes input by the control mode input unit. In the automatic control mode, the driving control unit controls the traffic volume and the current time. In this case, control the dimming intensity of the traffic light to the saving level, and control the drive signal of the traffic light with the blinking signal in the flashing control mode, and in the complex control mode, the dimming intensity of the traffic light to the saving level and flashing the driving signal of the traffic light It is characterized by controlling by a signal.

In addition, the present invention relates to a signal driving method of a traffic signal which is driven by the power charged in the battery when the main power is not supplied to the traffic signal lamp having a main power and a battery to turn on the traffic light, (a) the main Checking if the power is not supplied; (b) checking whether the control mode is an automatic control mode when the main power is not supplied; (c) adjusting the dimming intensity of the traffic light or blinking the traffic light according to the traffic volume and the current time in the automatic control mode; (d) When not in the automatic control mode, in accordance with the dimming control mode, the flashing control mode, or the combined control mode, the level of the dimming intensity is lower than the level when the main power is supplied (hereinafter, the normal intensity) (hereinafter referred to as power saving). Controlling the signal to be turned on at the intensity) or to blink the traffic light (hereinafter, the blink signal) to the normal intensity, or to the blink signal of the power saving intensity.

As described above, according to the signal driving device and method of the traffic signal according to the present invention, even if the power supply is cut off due to a power outage or the like, the traffic light is driven by the battery, and the power consumption is minimized considering the traffic volume and the congestion time. The effect of driving a traffic light for as long as possible is obtained.

In addition, according to the signal driving device and method of the traffic signal according to the present invention, in the case of the congestion time zone and the amount of congestion traffic, the effect of eliminating the traffic congestion at the intersection is obtained by driving at normal intensity and normal traffic light.

1 is a diagram showing the configuration of an entire system for implementing the present invention.
2 is a block diagram of a configuration of a traffic signal and a signal driving device according to an embodiment of the present invention.
3 is a configuration diagram of hardware mounting of a traffic signal for implementing the present invention.
4 is a block diagram of a configuration of a power supply according to an embodiment of the present invention.
5 is a state table of a traffic light drive control according to the present invention.
6 is a flowchart illustrating a signal driving method of a traffic signal according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the drawings.

In addition, in describing this invention, the same code | symbol is attached | subjected and the repeated description is abbreviate | omitted.

Next, the configuration of the entire traffic signal system for implementing the present invention will be described with reference to FIG.

As shown in FIG. 1, the traffic light 400 according to the exemplary embodiment of the present invention is mounted on the upper end of the support 20, and receives power from the traffic signal controller 10 through the buried wiring 21. . The traffic signal controller 10 may be connected to the control center server 30 through a network to transmit and receive data. That is, the control center server 30 may transmit a control command to the traffic signal controller 10 or transmit data collected by the traffic signal controller 10 to the control center server 30.

Next, the structure of the traffic signal 10 for implementing this invention is demonstrated with reference to FIG.

As shown in Figure 2, the traffic signal 10 for implementing the present invention is a main control unit (or signal main control unit, MCU, Main Control Unit) 100, signal driving device (or traffic light driving unit, SCU, Signal Control Unit 200, the traffic light 400 and the power supply unit 500. Additionally, the guitar device 300 may be further included.

The main controller 100 and the signal driver 200 are separated and each adopts a separate central computing unit (CPU). The main control unit 100 performs functions such as traffic situation information processing such as detector data, control algorithm processing, communication with the control center central unit, and connection to an operator input device (MMI: Man Machine Interface) 140, and further function expansion is performed. Make it possible. The signal driving device 200 is dedicated to turning on and off the signal lamp according to the command of the main control device 100, and provides a fail-safe control function to perform basic signal output control when a failure of the main control device 100 occurs. Improve the stability of the system.

As shown in FIG. 3A, the main controller 100, the signal driving device 200, and the other device unit 300 are mounted inside the traffic signal. In particular, the circuit board of the control devices is inserted into the interior of the traffic signal in the form of a slot.

The size of each device is 6U (unit) of the main control unit 100, the signal driving device 200 3U, and the other device unit 300 is 3U. And the terminal part of the terminal box (T / F) can be operated in a variety of internal arrangements within the range that satisfies the specifications of the entire enclosure, located at the bottom. The main controller 100, the signal driving device 200 and the other device 300 may be mounted in a different order depending on the installation conditions (such as the height of the seat) of the site. The location of internal components (main control device, signal driver, other device parts, etc.) can be appropriately positioned according to the ease of maintenance according to the installation conditions such as the height of the seat and the design form of the controller enclosure.

In addition, the power supply unit 500 includes a main power supply 510 and a battery 520. The main power source 510 receives the AC power supplied from the outside and converts it into a stable DC power source for operating the device and supplies the same to the traffic signal 10 or the traffic light 400.

As shown in FIG. 3B, the battery 520 is a rechargeable battery and may be installed in a separate mounting box separately from the main mounting box of the traffic signal 10. The battery 520 is composed of a plurality of battery modules 521, the battery capacity can be adjusted by adjusting the number of battery modules 521 according to the design. Meanwhile, as another embodiment, the battery 520 may be installed together inside the main body mounting box of the traffic signal 10 of FIG. 3A. For example, the battery compartment 520 may be installed by dividing the terminal box space.

As shown in FIG. 4, the power supply unit 500 includes a main power supply 510, a battery 520, and a switching control unit 530. The main power source 510 may be provided with a voltage regulator and a rectifier for converting the DC signal into a DC voltage suitable for turning on the signal lamp 500.

The input power IN is input to the switching controller 530, and the main power 510 and the battery 520 are connected and coupled to each terminal of the switching controller 530, and the main power 510 and the battery 520 are connected to each other. Is connected to the traffic light 500. When the power supply of the main power source 510 is cut off due to a power failure while the input power IN is input to the main power source 510 through the first terminal of the switching controller 530, the switching control unit 530 is switched to the second terminal to supply the input power IN to the battery 520.

The main control unit 100 is a unit computing system that plays a pivotal role as a traffic signal, and at least one central processing unit board, one to eight loop detector boards and a DC power supply device, a communication modem and various option boards as one bus system if necessary. The connected device.

As shown in FIG. 1, the main controller 100 may include a CPU board 110, a modem 120, a detector board 130, an operator input device 140, an option board 150, a VME bus 160, and the like. It is composed.

The controller board (CPU board) 110 plays a pivotal role in preparing and operating a signal plan, managing a database, processing detection information, and communicating with external devices, and important data related to signal operation are memory backup functions. This ensures that data is always maintained even during a power outage.

Modem (modulator-demodulator) (120) is a frequency modulation and demodulation device is a card-type communication device that enables data communication in the traffic signal period with the control center central device.

The loop detection unit (LDU) 130 controls the vehicle's presence, speed, and other information to be installed in the traffic signal after installing the vehicle detection sensor by road laying, roadside or structure installation. Say the device. In addition, the interface with the controller board 110 should be able to be processed through the VME bus (160).

The man-machine interface (MMI) 140 is a device capable of inputting or modifying data necessary for a traffic signal by operating a keyboard installed at the front side, so that an operator can easily check data through a screen display device.

The Option Board (OPT) 150 refers to various VME bus compatible control boards that can be additionally mounted in addition to the detector board to perform not only control functions but also additional functions considering future expandability and compatibility. These option boards (or OPTs) must comply with the standard VME bus conventions and are produced in SLAVE mode if there is an independent process. Applicable to the option board 150 is a time signal receiving unit for setting an internal timer of a traffic signal by receiving a time signal generated from a radio, and a voice generator unit having a voice transmission function for the visually impaired. ), A pedestrian pushbutton input device having a button input function for pedestrian input.

The VERSA Module Eurocard Bus (VME) bus 160 is a 32-bit and 64-bit system bus standard for small computers, and is a bus standardized by IEC 821 and IEEE 1014 and implemented by a bus standard according to international standards. In the main controller 100, power is supplied between the controller board 110, the modem 120, the detector board 130, and the option board 150 through the VME bus 160, which is designed for industrial devices and proven to be stable. Signaling takes place.

Next, the signal control unit (SCU: Signal Control Unit) 200 refers to a series of devices for receiving the signal progress command of the main control unit 100 (MCU) to perform the electrical output of the traffic light and to monitor the output result, the detection Traffic light receiving unit 210 for receiving the traffic volume, the time measuring unit 220 for measuring the current time, the signal light driving unit for indicating the registration output (or the output of the signal lamp lighting signal) by the time progress or in case of emergency flashing control ( 230, a signal driving control unit 240 for controlling and monitoring an output for driving the traffic light 400 is connected to one system bus 250.

The signal driving device 200 includes a feedback circuit (FEEDBACK, hereinafter referred to as a feedback signal) circuit for physically evaluating the power controller and the traffic light output result. In addition, the signal driving device 200 includes a series of input means (not shown) for accommodating a police officer's manual operation and a pedestrian input means. In particular, the control mode input unit 260 may be configured to additionally select a battery control mode. In addition, it includes an internal communication means (RS232C, etc.) for communication with the main controller 100.

Meanwhile, the other device unit 300 refers to a mounting space in which a control device having an independent computing system may be located inside the traffic signal. The independent control device that can be mounted in the other device unit 300 is a control device for functions related to signal control functions such as a traffic detector, a wireless I / O device, an independent image processing system, an alternative detector control system, and an independent real-time control system for detecting a vehicle airflow amount. In addition, wireless vehicle information collection devices, vehicle identification systems, and other equipment used as field devices in Intelligent Transportation Systems (ITS) may be mounted.

The devices mounted in the other device unit 300 may share the power signal and the communication line with the traffic signal, and can not be connected to other devices of the traffic signal by other physical methods other than the main control device 100 and the digital communication function, and the traffic signal function Should not cause disability.

Next, the traffic light 400 is composed of a light indicator 410 that displays red, green, yellow, arrows. The traffic light 400 includes a four-color equalizer with four indicator lights 410, a three-color equalizer with three, and the like.

The terminal box box (or T / F) of FIG. 3A refers to a facility space including a device for supplying power to a traffic signal and a terminal block for connecting a power line with a detector cable and a communication line. It connects devices and protects traffic signals from electrical noise and shock.

A cabinet is a protective cabinet whose purpose is to protect the equipment that makes up the traffic signal. The housing of the traffic signal should be designed in terms of ergonomics that can be installed on the seat to securely fix the traffic signal built-in devices and to block external shocks. The structure is largely composed of a cabinet, a support, a subrack, and a terminal facility.

As described above, the main power source 510 may be installed in the signal main body enclosure, and the battery 520 may be installed in a separate enclosure. This is to secure a space for mounting the large capacity battery module 521.

Bus (BUS) refers to a circuit or a configuration method for configuring the electrical passage in the main board so that hardware devices can send and receive electrical signals, the main control unit 100 of the traffic signal is a standard VME BUS standard, the signal driving device ( 200) applies the general input / output bus (I / O BUS) standard which is constructed by the method specified in the standard specification.

Next, the configuration of the signal driving apparatus 200 according to an embodiment of the present invention will be described in more detail with reference to FIGS. 2 and 5.

As shown in FIG. 2, the signal driving device 200 includes a traffic volume receiver 210 for receiving a sensed traffic volume, a time measuring unit 220 for measuring a current time, and a signal light driver 230 for lighting or blinking a traffic light. And a signal driving controller 240 for outputting a driving signal to the traffic light driver to adjust the dimming intensity of the traffic light or to flash the traffic light when the main power is not supplied. In addition, the control mode input unit 260 may be configured to further include a battery control mode.

The traffic volume receiver 210 receives the detected traffic volume. In particular, the traffic volume information detected by the detector board 130 of the main controller 100 may be received, or the traffic volume information may be directly received from the traffic detector of the other device 300. The traffic volume may be detected by a vehicle detection sensor installed on a road surface or a roadside, or may be detected by analyzing an image of a camera. Since the traffic detection method is a known technology, a detailed description thereof will be omitted.

The time measuring unit 220 refers to a clock device that measures the current time. The time measuring unit 220 may internally include a clock module or receive a current time from the control center 30 or the like.

The traffic light driver 230 controls the power supplied to the traffic light to turn on the traffic light 400. The signal lighting driver (or LSU) 210 is a light switch unit (LSU: load switch unit) that directly controls the power supplied to the signal lamp, and generates a feedback signal for the control result of the signal driving controller. Perform functions provided in 240. Signal light driver 230 should be available for 110V and 220V, and should not be affected by irregular changes in the driving environment.

In the power control circuit of the signal lamp driver 230, a dimming control function for adjusting the brightness of the lamp should be provided, and heat dissipation should be considered. In addition, for convenient maintenance, it is desirable to have a condition in which the faulty traffic light driver 230 may be partially (substrate) replaced during normal operation of the traffic signal.

The actual dimming control is performed by the signal driving control unit 240 to perform dimming control by on-off enforcement.

In addition, the traffic light driver 230 flashes the traffic light. The traffic light driver 230 includes a flasher unit (FLU) board, and blinks the traffic light when there is a flashing signal from the DC power supply fault, the signal drive controller fault, or the signal drive controller 240.

The signal driving controller 240 receives the signal driving data from the main controller 100, controls the signal lighting driver 230 according to the signal driving data, and receives a dimming control command from the main controller 100. Control the dimming of the traffic light driver 230.

In addition, the signal driving controller 240 transmits a blinking signal to the signal lamp driving unit 230 to cause the signal lamp 400 to blink.

The signal drive controller 240 includes a control circuit unit using a microprocessor, a ROM for storing programs and initial data, a RAM for executing a program, a communication circuit for serial communication, a circuit for detecting a disconnection and contradiction, and a manual operation switch (Police). Panel switch) and an input circuit for accommodating a pedestrian input switch.

Based on the signal driving data of the main control device 100, the signal lamp driving unit 230 is directly controlled according to the progress of time to drive the lamp (lighting of the signal lamp), and when a contradiction of the signal lamp lighting condition occurs, a red or yellow signal lamp is generated. Flashes. Verify the data necessary to drive traffic lights and operate emergency flashing in case of abnormal output or contradiction of traffic signal.

Signal driving control unit 240 functions such as the contradiction of the lighting state of the intersection traffic light and abnormal output detection of the light bulb, abnormal red light inspection, power failure, control of the signal light driving unit 230, power management of the signal driving device 200, etc. Has Through the serial communication terminal receives the information on the present combination of the current progress from the main control unit 100 to express the manifestation, and performs the function of monitoring the output state of the bulb to determine the contradiction state.

On the other hand, when the dimming control command for adjusting the brightness (or dimming) of the back light comes from the main controller 100, the signal driving controller 240 controls the dimming signal by turning on and off the on / off signal to the signal lamp driving unit 230. Perform the command or flash the traffic light.

In addition, when the main power is not supplied, the signal driving controller 240 sends a driving signal to the traffic light driver 230 according to the traffic volume and the current time to adjust the dimming intensity of the traffic light or to flash the traffic light. The control of the signal driving controller 240 described below is based on the premise that the main power is not supplied and thus is performed when the power is supplied by the battery 520.

The signal driving controller 240 transmits the driving signal by dividing the traffic light 400 into a signal (hereinafter, a normal signal) to be turned on by the signal driving data and a signal (hereinafter, a blinking signal) to blink the traffic light.

That is, the normal signal refers to a drive signal for the traffic light 400 is normally operated according to the signal drive data of the main controller 100, the flashing signal is a signal that the yellow light of the traffic light 400 flashes to be used in an emergency Say a signal.

The flashing signal turns on for a certain time and turns off for a certain time, thus saving power compared to the normal signal. For example, if the yellow light turns on for 1 second and turns off for 1 second, at least 50% of power is saved compared to the normal signal that is always on. Since the usage time of the battery increases, the traffic light 400 can be driven for a long time.

In addition, the signal driving controller 240 divides the dimming intensity of the traffic light 400 into a level when the main power is supplied (hereinafter referred to as normal intensity) and a level lower than the normal level (hereinafter referred to as power saving intensity). Adjust dimming intensity.

As described above, the actual dimming control is executed by on-off enforcement. This saves power compared to normal control. The difference with the flashing control is that the interruption cycle is very short. Dimming control, that is, dimming control by power saving intensity, can save power similarly to control by a blinking signal.

The signal driving control unit 240 controls flashing or dimming according to traffic conditions. That is, the signal driving control unit 240 normally drives a traffic light when there is a large amount of traffic, and performs dimming control with a blinking control or a saving intensity when the amount of the traffic is small.

Specifically, the signal driving controller 240 divides the traffic amount into a large case (hereinafter referred to as a congestion pass level) and a small case (hereinafter referred to as a hill pass level) in comparison with the reference amount. The reference amount is predetermined.

In addition, the signal driving control unit 240 controls traffic light driving by dividing the current time into a predetermined congestion time zone (hereinafter referred to as congestion time zone) and a case where the current time does not belong to the congestion time zone.

The congestion time is predetermined. For example, commute time zones belong to congested time zones. In addition, based on the traffic volume collected for a long time from the traffic signal, it is possible to set a time zone with a lot of traffic.

In one embodiment, the signal driving controller 240 controls the driving of the traffic light with the normal signal of the normal intensity when the main power is not supplied at the congestion passage level or the congestion time.

An example of traffic light drive control according to each traffic condition is shown in FIG.

As shown in FIG. 5, when the main power is not supplied, the signal driving controller 240 controls the driving of the traffic light with a normal signal of normal intensity when the congestion pass level is in a congestion time zone. In addition, in the case of the Hansan time zone of the Hansan traffic level, the control is controlled by the blinking signal of the power saving intensity. In addition, in the congestion time zone of the traffic congestion level or the busy time zone of the congestion traffic level, the traffic light driving is controlled by a blinking signal of normal intensity or a normal signal of power saving intensity.

Next, the control mode input unit 260 receives any one of an automatic control mode, a dimming control mode, a flashing control mode, and a composite control mode, and the signal driving controller 240 controls the corresponding control when the main power is not supplied. Mode to control the lighting of traffic lights.

The control mode input unit 260 may directly receive the control mode or may be received from the control center server 30. The input control mode is stored and controlled by the signal driving controller 240 according to the control mode.

In the automatic control mode, the control mode input unit 260 automatically controls the traffic volume and the current time. As described above, traffic light driving is automatically controlled according to traffic conditions.

In the dimming control mode, the control mode input unit 260 controls the dimming intensity of the traffic light to a saving level.

In the blink control mode, the control mode input unit 260 controls a drive signal such as a traffic light as a blink signal.

In the combined control mode, the dimming intensity of the traffic light is reduced and the drive signal of the traffic light is controlled by the flashing signal. That is, dimming control and flashing control are simultaneously performed.

Next, the input / output bus 250 is a bus for transmitting and receiving data between each component (or device), that is, the signal lighting driver 230 and the signal driving controller 240. The bus connection standard for each device is defined in the input / output bus 250, and each connection pin terminal connects each element to the bus and performs data communication with other elements.

Next, a signal driving method of a traffic signal according to an embodiment of the present invention will be described with reference to FIG.

As shown in Figure 6, the signal driving method of the traffic signal according to the present invention, (a) checking whether the main power is not supplied (S10); (b) checking whether the control mode is an automatic control mode when the main power is not supplied (S20); (c) controlling the traffic light driving in the automatic control mode (S30); (D) When not in the automatic control mode, it is divided into the step (S40) of controlling the traffic light driving in accordance with the dimming control mode, flashing control mode, or a combined control mode.

First, the signal driving device 200 determines whether the main power source 510 is supplied (S10). When the main power source 510 is not supplied, the battery 520 is automatically converted into the power source.

And it determines what mode the control mode is. That is, the signal driving device 200 determines whether the control mode is an automatic control mode (S20). In the automatic control mode, as described above, the signal driving device 200 adjusts the dimming intensity of the traffic light or flashes the traffic light according to the traffic volume and the current time (S30).

In the case where the control mode is not the automatic control mode, the control mode is any one of the dimming control mode, the flashing control mode, or the combined control mode. In this case, the signal driving device 200 controls the traffic light according to each control mode (S40).

If it is determined that the dimming control mode, the signal driving device 200 lights up the dimming intensity to a level (or power saving intensity) lower than the level (or normal intensity) when the main power is supplied (S41).

If it is determined that the blink control mode, the signal driving device 200 controls the signal (or blink signal) for blinking the traffic light to the normal intensity (S42).

In addition, when it is determined that the combined control mode, the signal driving device 200 is controlled by the blinking signal of the power saving intensity (S43).

As mentioned above, although the invention made by this inventor was demonstrated concretely according to the said Example, this invention is not limited to the said Example, Of course, a various change is possible in the range which does not deviate from the summary.

10: traffic signal 20: prop
30: control server
100: main controller 110: CPU board
120: modem 130: detector board
140: operator input device 150: option board
160: VME bus
200: signal driving device 210: traffic volume receiving unit
220: time measuring unit 230: signal light driving unit
240: signal driving control unit 250: I / O bus
260 control mode input unit
300: other unit 310: traffic detector
400: traffic light 410: light, indicator light
500: power supply 510: main power supply
520: battery

Claims (7)

In a traffic signal lamp having a main power source and a battery to turn on a traffic light, when the main power is not supplied, the signal driving device of the traffic signal device driven by the power charged in the battery,
A traffic volume receiver configured to receive the sensed traffic volume;
A time measuring unit measuring a current time;
A signal light driver to turn on or flash the signal light; And,
When the main power is not supplied to the traffic signal and the current time to the driving signal to the traffic light driving unit, the signal driving control unit for adjusting the dimming intensity of the traffic light or flashing the traffic light signal drive. The method of claim 1,
The signal driving control unit transmits a driving signal by dividing the traffic light into a signal (hereinafter, referred to as a normal signal) that lights up the signal driving data (hereinafter, a normal signal) and a signal (hereinafter, flashing signal) to flash the traffic light, and outputs a dimming intensity of the traffic light. A signal driving device for a traffic signal, characterized in that the dimming intensity of the traffic light is adjusted by dividing the power supply level (hereinafter referred to as normal intensity) and the level below the normal level (hereinafter referred to as power saving intensity). The method of claim 2,
The signal driving control unit divides the traffic amount into a large case (hereinafter referred to as a congestion pass level) and a small case (hereinafter referred to as a hill pass level) by comparing with the reference amount, and when the current time belongs to a predetermined congestion time zone (hereinafter referred to as a congestion time zone) and A signal driving device of a traffic signal, characterized in that it controls traffic light driving by dividing into a case where it does not belong (hereinafter referred to as a busy time zone). The method of claim 3,
The signal driving control unit is a signal driving device of the traffic signal, characterized in that for controlling the traffic light drive to the normal signal of the normal intensity when the congestion traffic level or congestion time zone when the main power is not supplied. The method of claim 3,
When the main power is not supplied, the signal driving control unit is a normal signal of normal strength in the congestion time zone of the congestion traffic level, a flashing signal of power saving intensity in the Hansan time zone of the Hansan traffic level, and a congestion time of the Hansan traffic level. Traffic signal drive device characterized in that for controlling the traffic light driving in the busy time zone of the congestion traffic level by the flashing signal of the normal intensity or the normal signal of the power saving intensity. The method of claim 1,
The apparatus further includes a control mode input unit for receiving any one of an automatic control mode, a dimming control mode, a flashing control mode, and a composite control mode.
The signal driving control unit is controlled by any one of the control mode input by the control mode input unit when the main power is not supplied, in the case of the automatic control mode, the signal driving control unit controls the traffic volume and the present time, and the dimming control In the mode, the dimming intensity of the traffic light is controlled to the saving level, and in the flashing control mode, the driving signal of the traffic light is controlled by the flashing signal, and in the complex control mode, the dimming intensity of the traffic light is reduced and the driving signal of the traffic light Signal driving device of a traffic signal characterized in that for controlling the flashing signal. In a traffic signal signal having a main power source and a battery to turn on a traffic light, when the main power is not supplied, the signal driving method of the traffic signal driven by the power charged in the battery,
(a) checking whether the main power is not supplied;
(b) checking whether the control mode is an automatic control mode when the main power is not supplied;
(c) adjusting the dimming intensity of the traffic light or blinking the traffic light according to the traffic volume and the current time in the automatic control mode;
(d) When not in the automatic control mode, in accordance with the dimming control mode, the flashing control mode, or the combined control mode, the level of the dimming intensity is lower than the level when the main power is supplied (hereinafter, the normal intensity) (hereinafter referred to as power saving). And controlling a signal (hereinafter, a blinking signal) that lights up at an intensity, or flashes a traffic light (hereinafter, a blinking signal) to the normal intensity, or controls the signal of the power saving intensity to be a blinking signal.

Images