KR20170060440A - Power supply device of traffic signal controller - Google Patents

Power supply device of traffic signal controller Download PDF

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Publication number
KR20170060440A
KR20170060440A KR1020150164885A KR20150164885A KR20170060440A KR 20170060440 A KR20170060440 A KR 20170060440A KR 1020150164885 A KR1020150164885 A KR 1020150164885A KR 20150164885 A KR20150164885 A KR 20150164885A KR 20170060440 A KR20170060440 A KR 20170060440A
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South Korea
Prior art keywords
unit
power
led
signal
signal lamp
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KR1020150164885A
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Korean (ko)
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KR101801298B1 (en
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정진태
정근우
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진우산전 주식회사
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    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/095—Traffic lights
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L29/00—Safety means for rail/road crossing traffic
    • H05B37/0227—
    • H05B37/0272—

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Traffic Control Systems (AREA)
  • Train Traffic Observation, Control, And Security (AREA)

Abstract

The present invention discloses a power supply device for a traffic signal controller. In the present invention, when a signal lamp is replaced with an LED signal lamp that is turned on by a DC power source, And the DC light source is directly supplied to the DC light source while the brightness of the LED signal lamp is constantly maintained by the stable power supply through the constant current driving unit and the failure of the LED signal light is monitored in real time through the signal light monitoring unit, So that the controller can be operated stably.

Figure P1020150164885

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a power supply device for a traffic signal controller,

The present invention relates to a power supply device for a traffic signal controller, and more particularly, to a power supply device for a traffic signal controller. More particularly, the present invention relates to a power supply device for a traffic signal controller, The present invention relates to a power supply device for a traffic signal controller which eliminates a process of converting a power supply voltage of a light emitting diode (LED) into a DC power source and maintains the brightness of the LED signal light constantly,

Generally, a traffic signal controller is a device that is installed at an intersection and a crosswalk to control a traffic light. Such a traffic signal controller implements a vehicle sensor to collect current traffic information, And the like.

In addition, the traffic signal controller adopts a method of determining the reference time using the built-in real time clock (RTC) in controlling the intersection signal. The signal rate of the intersection is controlled by using the necessary period, current rate, interworking value, and the like at a predetermined time according to the reference time.

However, in the conventional traffic signal controller, the AC power supplied from the outside is converted into the DC power from the power source to be supplied as the internal operation power. In the conventional method, AC110 / 220V AC power is supplied to turn on the incandescent lamp As a result, the incandescent bulb is frequently replaced due to a relatively low lifetime and high power consumption compared to LED devices such as LED signals, and unnecessary power cost increases. Factor.

Conventionally, as disclosed in Korean Utility Model Registration No. 20-0355683 (filed Jul. 2004, Jul. 7, 2004), a traffic signal controller for replacing a signal lamp with an LED and supplying power thereto has been disclosed. However, unit, it is necessary to construct a DC power generator for converting an AC voltage outputted from the AC power supply unit into a DC current, which is a driving current of an LED signal lamp. In order to drive LED signals, → DC).

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a signal lamp driving apparatus, DC power is supplied to the constant current driving unit, the constant current is supplied through the constant current driving unit, the brightness of the LED signal lamp can be kept constant through the stable power supply, And to provide a power supply for a traffic signal controller that can be used to control a vehicle.

According to an aspect of the present invention, there is provided a power supply unit for a traffic signal controller, comprising: a power unit for converting AC power supplied from an external source into DC power and supplying the DC power to the inside of a traffic signal controller; A vehicle detection unit for generating traffic volume information through vehicle detection; A main controller for receiving and driving power from the power source, receiving traffic volume information from the vehicle detector, generating a traffic parameter, calculating a traffic signal period value, and outputting a drive control signal while deriving a display time for each direction; A communication unit relaying communication between the central center and the main control unit; A time correction unit for obtaining time information through a terrestrial broadcast receiving unit and a GPS receiving unit and providing the time information to the main control unit; A drive management unit for performing a special control function of power phase control according to a drive control signal output from the main controller; And an LSU that receives the DC power from the power supply unit and provides the LED power to the LED signal. The control unit receives the drive control signal transmitted from the drive control unit and lights the LED signal lamp, A signal lamp driving unit for stably supplying the DC power received from the LSU to the LED signal lamp to be illuminated and determining the state of the LED signal lamp and indicating the replacement period; .

In addition, the traffic signal controller may include a circuit breaker control unit of a railroad crossing to transmit information on entry of a railway vehicle. And an interface unit of a railroad crossing for collecting entrance information of the railway car transmitted from the breaker control unit of the railroad crossing and providing the information to the main control unit. As shown in FIG.

The signal lamp driving unit supplies DC power to the LED signal from the LSU to feedback the current state of the DC power supplied to the LED signal when the LED signal lights up, A constant current driving unit for controlling the constant current driving unit; And a signal light monitoring unit for monitoring the current state of the feedback current controlled by the constant current driving unit to monitor whether the LED elements constituting the LED signal light are defective or not, ; As shown in FIG.

As described above, the power supply device of the traffic signal controller of the present invention eliminates the process of converting the AC power supplied from the signal lamp driver to the LED signal to the DC power when the signal lamp is replaced with the LED signal illuminated by the DC power source, In addition to supplying power and supplying constant current, stable brightness of LED signal lamp can be maintained constantly by stable power supply. In addition, it is possible to monitor the failure of LED signal lamp in real time while reducing power consumption, The controller can be operated stably.

1 is a schematic block diagram of a power supply of a traffic signal controller according to an embodiment of the present invention;

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and how to accomplish them, will become apparent by reference to the embodiments described in detail below with reference to the accompanying drawings. However, it should be understood that the present invention is not limited to the disclosed embodiments, but may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. It will be understood by those of ordinary skill in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

The terminology used herein is for the purpose of illustrating embodiments and is not intended to be limiting of the present invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification.

In this specification, the terms "comprises" or "having ", and the like, specify that the presence of stated features, integers, steps, operations, elements, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

In addition, the embodiments described herein will be described with reference to cross-sectional views and / or plan views, which are ideal illustrations of the present invention. In the drawings, the thicknesses of the films and regions are exaggerated for an effective description of the technical content. Thus, the shape of the illustrations may be modified by manufacturing techniques and / or tolerances. Accordingly, the embodiments of the present invention are not limited to the specific forms shown, but may include variations in shapes that are created or required according to the manufacturing process. For example, the area shown at right angles may be rounded or may have a shape with a certain curvature. Thus, the regions illustrated in the figures have schematic attributes, and the shapes of the regions illustrated in the figures are intended to illustrate specific forms of regions of the apparatus and are not intended to limit the scope of the invention.

Like reference numerals refer to like elements throughout the specification. Accordingly, although the same reference numerals or similar reference numerals are not mentioned or described in the drawings, they may be described with reference to other drawings. Further, even if the reference numerals are not shown, they can be described with reference to other drawings.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a schematic block diagram of a power supply of a traffic signal controller according to an embodiment of the present invention.

1, a power supply unit A of a traffic signal controller according to an embodiment of the present invention includes a power supply unit 10, a vehicle detection unit 20, a main control unit 30, a communication unit 40, A visual correction unit 50, a drive management unit 60 and a signal lamp driving unit 70. In addition to this, the present invention can further include a railroad crossing barrier control unit 80 and a railroad crossing interface unit 90 will be.

The power supply unit 10 converts AC power supplied from the outside into DC power and supplies the DC power to the inside of the traffic signal controller.

The vehicle detection unit 20 is configured to generate traffic volume information through vehicle detection and provide the traffic volume information to the main control unit 30. [

The main control unit 30 receives power from the power supply unit 10 and receives traffic volume information from the vehicle detection unit 20 to generate a traffic parameter and calculates a traffic signal cycle value. And outputs the drive control signal.

The communication device unit 40 is configured to relay communication between the central center and the main control unit 30. The time correction unit 50 obtains time information through the terrestrial broadcast receiving unit and the GPS receiving unit And provides it to the main control unit 30.

The drive management unit 60 is configured to perform a special control function of the power phase control according to the drive control signal output from the main control unit 30. [

The signal lamp driving unit 70 receives the driving control signal transmitted from the main control unit 30 from the driving management unit 60 and lights the LED signal lamp 100. The signal lamp driving unit 70 turns on the DC power received from the LSU 74, The LED signal lamp 100 is supplied with the LED signal lamp 100 stably and the LED signal lamp 100 is determined to determine the replacement period. (Flash Unit) 72, a manual operation unit (Police Panel Unit) 73, a load signal unit (LSU) 74, a constant current driving unit 75 and a traffic light monitoring unit 76.

The flicker detector 71 is configured to determine whether the internal components of the traffic signal controller A including the LED signal lamp 100 are malfunctioning and the blinker 72 is connected to the LED signal lamp 100 So as to confirm the lighting state.

The LSU 74 is configured to perform an operation in accordance with the turning on and off of the LED signal lamp 100 prior to the control of the main controller 30. When the LSU 74 is turned on, Receives the DC power from the power supply unit (10) and provides the LED power to the LED signal lamp (100).

The constant current driving part 75 supplies DC power to the LED signal lamp 100 from the LSU 74 and outputs a current state of the DC power supplied to the LED signal lamp 100 when the LED signal lamp 100 is lit. And controls the amount of output current of the DC power source by the LSU 74. [0064]

The signal light monitoring unit 76 monitors the current state of the feedback current in the state where the output current amount is controlled by the constant current driving unit 75 to monitor whether the LED elements constituting the LED signal light 100 are defective or not, So that the replacement period of the LED elements is informed.

The railroad crossing barrier controller 80 transmits information on entering of the railway vehicle. The railroad crossing interface 90 collects information on the entry of the railroad car transmitted from the railroad crossing barrier controller 80, And is provided to the main control unit 30.

1, when the AC power is supplied from the outside in the power supply unit 10, the power supply unit of the traffic signal controller according to the embodiment of the present invention converts the AC power to DC power, To the inside of the signal controller (A).

The main control unit 30 included in the traffic signal controller A communicates with the central center through the communication unit 40 and exchanges information with the nearby traffic signal controller provided by the central center, The control operation for enabling the traffic control is performed.

At this time, the main control unit 30 receives the traffic volume of the vehicle through the vehicle detection unit 20, and performs traffic control so that smooth traffic communication can be performed while confirming the number of vehicles waiting at an intersection or a crosswalk .

The main control unit 30 outputs a drive control signal to the drive control unit 60 so that the drive control unit 60 can perform a special control function of the power phase control for the LED signal lamp 100 will be.

The signal lamp driver 70 receives the drive control signal transmitted from the main controller 30 from the drive controller 60. The signal lamp driver 70 receives the DC power directly from the power supply 10 and receives the DC power through the LSU 74 The LED signal lamp 100 is provided as an output to the LED signal lamp 100 so that the LED signal lamp 100 is turned on or off.

The constant current driving unit 75 included in the signal lamp driving unit 70 supplies DC power to the LED signal lamp 100 from the LSU 74 and outputs the LED signal light 100 when the LED signal lamp 100 is turned on or off. The LED signal lamp 100 can always maintain a constant brightness by controlling the current state of the DC power supplied to the LED lamp 100 and controlling the output current amount of the DC power source to be constant.

The signal lamp monitoring unit 76 included in the signal lamp driving unit 70 detects the current value of the LED signal lamp 100 constituting the LED signal lamp 100 from the current state fed back in a state in which the amount of output current is controlled by the constant current driving unit 75, And it is possible to inform the replacement period of LED devices according to the monitoring result.

That is, the signal lamp monitoring unit 76 may check the feedback state of the constant current supplied to the LED signal lamp 100 to determine whether a certain number or more of the LED elements constituting the LED signal lamp 100 are defective And outputs a replacement signal for the defective LED elements to the main controller 30 according to the determination, so that the replacement of the LED elements can be performed.

The main control unit 30 detects the time frequency of the terrestrial radio broadcast signal connected to the time correction unit 50 in parallel with the LED signal lamp 100 when the LED signal lamp 100 is turned on or off, And the time information through the unit for calculating the time through the GPS reception, so that the LED signal lamp 100 can be turned on or off at an accurate time.

The main control unit 30 can collect information on the entry of the railway vehicle from the railway crossing barrier controller 80 through the railway crossing interface unit 90, And the other direction is to drive a normal signal, thereby enabling smooth and safe control of the vehicle.

As described above, the power supply device of the traffic signal controller according to the embodiment of the present invention supplies DC power from the power supply unit 10 directly to the LED signal lamp 100 through the LSU 74, It is possible to omit the loss of the power source, and at the same time, it has an advantage of stably driving the LED signal lamp 100.

While the present invention has been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined by the appended claims. It is to be understood that such changes and modifications are within the scope of the claims.

10; A power supply unit 20; Vehicle detection unit
30; A main control unit 40; The communication device unit
50; A visual correction unit 60; The drive management section
70; A signal lamp driving unit 71; Contradiction detector
72; Blinking portion 73; Manual control unit
74; LSU 75; The constant-
76; A traffic light monitoring unit 80; The breaker control unit
90; An interface unit 100; LED traffic lights
A; Traffic signal controller

Claims (3)

A power supply unit for converting AC power supplied from the outside into DC power and supplying the DC power to the inside of the traffic signal controller;
A vehicle detection unit for generating traffic volume information through vehicle detection;
A main controller for driving and receiving power from the power source, receiving a traffic volume information from the vehicle detector, generating a traffic parameter, calculating a traffic signal period value, and outputting a drive control signal while deriving a display time for each direction;
A communication unit relaying communication between the central center and the main control unit;
A time correction unit for obtaining time information through a terrestrial broadcast receiving unit and a GPS receiving unit and providing the time information to the main control unit;
A drive management unit for performing a special control function of power phase control according to a drive control signal output from the main controller; And
And an LSU that receives the DC power from the power supply unit and provides the LED power to the LED signal. The control unit receives the driving control signal transmitted from the driving control unit and lights the LED signal lamp, A signal lamp driving unit for stably supplying the DC power received from the LSU to the LED signal lamp to be illuminated and determining the state of the LED signal lamp and indicating the replacement period; And a controller for controlling the power supply of the traffic signal controller. The method according to claim 1,
A circuit breaker control part of a railroad crossing to transmit information on entry of a railway vehicle; And
An interface unit of a railroad crossing which collects entrance information of a railway car transmitted from a breaker control unit of the railway crossing and provides the information to the main control unit; And a power supply for supplying power to the traffic signal controller. The vehicle control device according to claim 1,
A constant current driving unit for supplying DC power to the LED signal from the LSU to feedback the current state of the DC power source supplied to the LED signal lamp when the LED signal is turned on to control the amount of output current of the DC power source by the LSU; And
A signal lamp monitoring unit for monitoring a current state of a feedback current in a state where the output current amount is controlled by the constant current driving unit to monitor whether the LED elements constituting the LED signal lamp are defective and to indicate the replacement period of the LED elements according to the monitoring result; And a power supply for supplying power to the traffic signal controller.
KR1020150164885A 2015-11-24 2015-11-24 Power supply device of traffic signal controller KR101801298B1 (en)

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KR1020150164885A KR101801298B1 (en) 2015-11-24 2015-11-24 Power supply device of traffic signal controller

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KR101801298B1 KR101801298B1 (en) 2017-11-27

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102335547B1 (en) * 2021-06-08 2021-12-07 주식회사 아모센스 System for controlling a reclamation type signal lamp of the ground

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200291715Y1 (en) * 2002-07-24 2002-10-12 진우산전 주식회사 A power supplying device in controller of traffic signal
KR200406399Y1 (en) 2005-10-28 2006-01-20 이승철 Traffic signal controller for safe
KR100869115B1 (en) * 2008-07-16 2008-11-17 샤이니테크 주식회사 A power supply for led traffic light

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102335547B1 (en) * 2021-06-08 2021-12-07 주식회사 아모센스 System for controlling a reclamation type signal lamp of the ground
WO2022260326A1 (en) * 2021-06-08 2022-12-15 주식회사 아모센스 System for controlling floor-type pedestrian signals

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