KR20170055177A - Digital traffic signal control system - Google Patents

Digital traffic signal control system Download PDF

Info

Publication number
KR20170055177A
KR20170055177A KR1020150158025A KR20150158025A KR20170055177A KR 20170055177 A KR20170055177 A KR 20170055177A KR 1020150158025 A KR1020150158025 A KR 1020150158025A KR 20150158025 A KR20150158025 A KR 20150158025A KR 20170055177 A KR20170055177 A KR 20170055177A
Authority
KR
South Korea
Prior art keywords
control unit
mlc
slc
signal
main control
Prior art date
Application number
KR1020150158025A
Other languages
Korean (ko)
Other versions
KR101762686B1 (en
Inventor
고광용
김민성
Original Assignee
도로교통공단
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 도로교통공단 filed Critical 도로교통공단
Priority to KR1020150158025A priority Critical patent/KR101762686B1/en
Publication of KR20170055177A publication Critical patent/KR20170055177A/en
Application granted granted Critical
Publication of KR101762686B1 publication Critical patent/KR101762686B1/en

Links

Images

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/07—Controlling traffic signals
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/07—Controlling traffic signals
    • G08G1/075—Ramp control
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Traffic Control Systems (AREA)

Abstract

The present invention relates to a digital traffic signal control system. By comprising a master local controller (MLC), slave local controllers (SLCs) between traffic lights, and additional lamp driving modules for switching traffic lights which are respectively allocated to the SLCs, the problem of switch modules for all traffic lights installed on the MLC, leading to waste of space, reduced aesthetic value and frequent breakdowns, can be resolved. The MLC and the respective SLCs are connected via low-voltage cables. Upon being supplied with AC high-voltage power from the outside, the MLC has an active circuit for converting the AC high-voltage power into a DC low-voltage power to supply each cable with DC low-voltage power. Thereby, the overload, which occurs when supplying power to the entire traffic lights with one single power line can be efficiently prevented. Also, since no active circuit is needed on the respective SLCs. Therefore, breakdown of equipment or replacement of the same can be significantly reduced. Moreover, by granting IDs of the SLCs along the progressing direction of automobiles and along the installation order at the crossroad, the efficiency in both management and operation can be increased, according to the present invention.

Description

[0001] Digital traffic signal control system [

The present invention relates to a digital traffic signal control system, and more particularly, to a digital traffic signal control system in which a main control unit (MLC) and a sub control unit (SLC) are connected between signal lights and a main control unit (MLC) The present invention relates to a digital traffic signal control system capable of simplifying wiring and minimizing unnecessary space consumption of a main control unit (MCL), reducing equipment failure and errors, and improving reliability and safety of communication .

Pedestrian traffic lights and vehicle traffic lights are installed all over the road in order to allow the roads to be used safely by the vehicles and pedestrians as the roads expand and as the number of vehicles increases. Especially, traffic congestion areas such as intersections have traffic lights as well as traffic lights Loop detectors for detecting traffic lights, CCTV for monitoring roads, etc. These traffic lights, loop detectors and CCTVs are connected to a traffic signal controller installed at one side of the road, The traffic signal controller collects various traffic information transmitted from the control objects to the traffic control center by being connected to the external traffic control center through a dedicated line.

Generally, in the conventional traffic signal control system, the 220V energizing cables are connected in a one-to-one manner between the traffic signal controller and the respective control objects, and at the same time, the control objects are driven by the switch control method. A bundle of strong electric cables connected between the control objects is indiscriminately accommodated.

Therefore, in the traffic signal control system of the related art, the volume of the housing forming the traffic signal controller increases, unnecessarily large space is consumed, the strong cables are connected in a one-to-one manner and the power leakage is severe and there is a safety risk due to the strong cable bundles , Installation and maintenance are difficult.

In order to overcome such a problem, a traffic signal control system using a broadband wireless communication system, 2) an LED optical communication system, and 3) a power line communication (PLC) ), 2), and 3) are implemented by using a low-voltage cable jointly, it is possible to solve the problem that the wiring pointed out in the switch control method is complicated, the power leakage is severe, and the beauty of the city is deteriorated.

However, in the conventional method 1), the controller and the Proxim (radio equipment) to be controlled are configured to transmit and receive the traffic-related data through the wireless communication through the wireless communication. Therefore, the wireless communication interface module must be installed in each device, The communication stability is lowered.

In addition, in the conventional method 2), the light source of a signal lamp is provided as an LED so that the LED is used for data transmission and reception while providing signal information. However, in order to improve data transmission / reception efficiency of optical communication, Because installation skills require specialized skills, installation costs are increased, and they are vulnerable to surrounding environments and obstacles.

In addition, the conventional method 3) has a disadvantage in that a separate communication line is unnecessary and has an advantage of being easy to install, but has a drawback in that transmission power is limited and interference and noise are severe due to high load.

In order to solve this problem, the applicant of the present application filed a traffic signal control system which controls the control objects by using can communication while supplying a voltage to the control objects using a single low-voltage cable, 10-1506301 (entitled " Traffic Signal Control System Using CAN Communication ").

FIG. 1 is a block diagram schematically showing the configuration of a CAN communication network disclosed in Korean Patent No. 10-1506301 (a name of the invention: a traffic signal control system using can communication), FIG. 2 is a block diagram Fig.

1, a CAN (Controller Area Network) communication system is applied, and a node 110a representing a traffic signal controller and a plurality of The nodes 110b, 110c, and 110d are connected by a CAN bus 20.

That is, according to the related art 100, a plurality of nodes 110a, 110b, 110c, and 110d are connected by a can bus 120 to perform data communication, .

2, the traffic signal controller 130 and the traffic lights 140 are configured to use the low voltage cable 150 as a common power line. However, in the conventional technology 100, Supplying power to the plurality of signal lamps 140 not only causes an overload but also causes a current exceeding capacity to flow through the wires, resulting in poor safety. That is, in the prior art 100, since a high-capacity current flows in the low-voltage cable 150 of the area A drawn out from the traffic signal controller 130, the thickness of the cable excessively increases.

Also, the conventional technology 100 has a disadvantage in that signal management and control are complicated because a communication ID scheme assigned to each of the traffic lights (110b, 110c, 110d) is given without a specific reference.

In addition, since the SMPS (Switching Mode Power Supply) for switching control of the traffic lights 140 is installed in the traffic signal controller 130 in the prior art 100, troubles frequently occur and the signal safety and reliability are low Lt; / RTI >

Also, in the related art 100, an active circuit for converting the AC high voltage power received from the traffic signal controller 130 into a DC low voltage power is installed in each of the traffic lights 140, and this active circuit causes frequent failure The signal safety and reliability are further deteriorated.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a system and a method for setting up a slave local controller (SLC) between a master local controller (MLC) Each of them has a self-serve ?? Since the lamp driving modules for controlling the switching of the signal lamps are installed separately, the switch modules of all the signal lamps are installed in the main part of the related art so that the unnecessary space consumption, the aesthetic efficiency and the troubles frequently occur And to provide a traffic signal control system.

The main control unit (MLC) and each sub control unit (SLC) are connected by a low voltage cable. When the main control unit (MLC) receives an AC high voltage power from the outside, the AC high voltage power is supplied to the DC low voltage power source , It is possible to effectively prevent the overload phenomenon generated when power is supplied to the entire signal lamps by one power line by supplying the DC low voltage power to each cable including the active circuit which converts active signal So as to provide a digital traffic signal control system capable of remarkably reducing equipment failure and replacement.

Further, another object of the present invention is to provide an electric power steering system which can simplify wiring and drastically reduce power leakage by connecting a main control unit (MLC) and each sub control unit (SLC) with a cable, And to provide a signal control system.

Another object of the present invention is to provide a digital traffic signal control system in which the IDs of the sub-control units (SLCs) are configured to be given in accordance with the vehicle traveling direction and installation order from an intersection, thereby improving the efficiency of management and operation.

Another object of the present invention is to provide a digital traffic signal control system including a lamp driving module for switching control of each of the signal lamps assigned to the sub control unit SLC, .

According to an aspect of the present invention, there is provided a communication system including a master local controller (MLC) for managing and controlling a signal system; Slave local controllers (SLCs) for controlling the power switching of the lamps of the pre-allocated signal lamps according to the present data transmitted from the main control unit (MLC); A communication line for providing a path for data movement between the main control unit (MLC) and each sub control unit (SLC); Voltage cables connected between the main control unit (MLC) and each sub control unit (SLC), and the main control unit (MLC) includes an active circuit for converting the AC power supplied from the outside into the low voltage DC power desirable.

Further, in the present invention, it is preferable that the sub-control unit (SLC) is provided with an ID in accordance with the traveling direction of the vehicle and the installation order from the intersection.

Further, in the present invention, when installed at an intersection, the SLCs may control one vehicle signal lamp, two pedestrian signal lamps adjacent to the one vehicle signal lamp, and a rear surface of the one vehicle signal lamp.

Further, in the present invention, it is preferable that the sub control unit (SLC) further includes a DC-DC converter unit for converting the DC low voltage power supplied from the main control unit (MLC) to a DC low voltage power source.

According to the present invention having the above-mentioned problems and the solution, a slave local controller (SLC) is installed between a master local controller (MLC) and a traffic light, and each of the sub control units (SLC) ? Since the lamp driving modules for controlling the switching of the signal lamps are installed separately, the switch modules of all the signal lamps are installed in the main part of the related art so that unnecessary space consumption is large, aesthetic efficiency is low, and troubles frequently occur.

According to the present invention, the main control unit (MLC) and each of the sub control units (SLC) are connected by a low voltage cable. When the main control unit (MLC) receives AC high voltage power from the outside, it converts the supplied AC high voltage power into a DC low voltage power By supplying the DC low voltage power to each cable including the active circuit, it is possible to effectively prevent an overload phenomenon generated when power is supplied to all signal lamps by one power line, and the active circuit is not installed in each of the sub- This can significantly reduce equipment failures and replacements.

Also, according to the present invention, the main control unit (MLC) and each of the sub control units (SLC) are connected by a cable, thereby simplifying the wiring and drastically reducing power leakage and facilitating installation and maintenance.

Further, according to the present invention, the IDs of the sub control unit (SLC) are configured to be assigned in accordance with the installation direction from the vehicle traveling direction and the intersection, thereby improving the efficiency of management and operation.

In addition, according to the present invention, the sub control unit (SLC) includes a lamp driving module for switching control of each of the signal lamps assigned thereto, thereby facilitating equipment inspection and replacement.

1 is a block diagram schematically showing the configuration of a CAN communication network disclosed in Korean Patent No. 10-1506301 (entitled: Traffic Signal Control System Using Can Communication).
2 is an exemplary diagram for explaining the problem of FIG.
3 is a block diagram illustrating a traffic signal control system according to an embodiment of the present invention.
4 is a block diagram showing the sub-controller SLC of Fig.
5 is a block diagram showing the main control unit (MLC) of FIG.
6 is an exemplary diagram illustrating an ID scheme assigned to each of the sub-control unit SLCs of the present invention.
7 is a block diagram illustrating a channel connection scheme of the sub-controller SLC of FIG.
Fig. 8 is another example of Fig. 7. Fig.
Fig. 9 is a view showing the sub-control unit of Fig.
Fig. 10 is a view of the lamp driving module inserted into the slot of Fig. 8;

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

3 is a block diagram illustrating a traffic signal control system according to an embodiment of the present invention.

The traffic signal control system 1 shown in FIG. 3 includes vehicle signal lamps 20 for displaying traffic information of the vehicle and guiding vehicle traffic, a pedestrian signal lamps 30 for displaying the walking information of the pedestrian and guiding the walking of the pedestrian A slave local controller (SLC) 5 that receives power from a main controller (MLC) 3 to be described later and controls the assigned signal lamps to receive control data, And a master local controller (MLC) 3 for managing and controlling the sub control units 5.

Each of the cables 7 is connected between the main control unit (MLC) 3 and each sub control unit (SLC) 5, and DC power is supplied to each cable 7. In this case, the cable 7 includes five core wires, two core wires are '+' and '-' power cables, and the other two core wires are used for a communication cable.

The main control unit (MLC) 3 converts the AC high voltage power (220V) supplied thereto from the outside into the DC low voltage power (48V) and supplies the converted DC low voltage power to the cable 7 to the respective sub control units (SLC) 5, the aesthetic efficiency is lowered due to the connection of the power cable to each of the main signal units with one-to-one connection, and the risk of accidents is high, Conventionally, power is supplied to all the signal lamps with one power line, thereby overcoming the problem of overloading.

In addition, the main control unit (MLC) 3 transmits control data including presentation information to each of the sub control units (SLC) 5 via each cable according to a predetermined display period. The method of assigning the identification ID to each of the sub-control unit (SLC) 5 at this time will be described later in detail with reference to FIG.

The main control unit (MLC) 3 is connected to an external traffic control center (not shown) through a dedicated line, collects status information of the traffic lights, periodically transmits the collected information to the traffic control center, And controls the sub control unit (SLC).

The SLCs 5 manage and control the traffic lights 20 and 30 assigned to them according to the control information transmitted from the main control unit (MLC) 3. The system and method for assigning the traffic lights to the sub-fishermen at this time will be described in detail in FIGS. 7 and 8 to be described later.

Further, the subordinate control unit (SLC) 5 includes lamp driving modules for controlling the power switching of the lamps of the signal lamps assigned to the SLCs 5, specifically, the signal lamps assigned to the SLCs 5 from the main control unit (MLC) Controls the lamp driving modules according to the current information included in the received control data so that the signal lamps (20) and (30) display the signal according to predetermined display information.

That is, in the present invention, the lamp driving module for all the traffic lights is not installed in the main control unit (MLC) 3 as in the prior art but the lamps for the traffic lights assigned to the sub control unit (SLC) Since the driving module is installed by itself, the space consumption of the main control unit (MLC) 3 is significantly reduced and the switching is performed in each of the sub control units (SLC) 5, thereby enhancing the signal control safety and reliability .

4 is a block diagram showing the sub-controller SLC of Fig.

When the DC low voltage power is supplied through the cable 7 connected to the main control unit 3, the SLC 5 of FIG. 4 supplies the supplied DC low voltage power to each of the lamps 21 of the signal lamp, + 'Power line to the common line, and' - 'to the power line.

The control unit 5 further includes a communication interface unit 51 for supporting data communication with the main control unit (MLC) 3, and a DC low voltage power supply unit that converts the DC low voltage power supplied through the cable 7 to a DC low voltage power, An output unit 55 for switching the lamps 21 to be turned on and off, and a DC / DC converter unit 53 for supplying the signal lamps 21 with current A current detector 57 for detecting a signal contradiction, and a voltage detector 59 for detecting the voltage of each of the signal lamps 21 and detecting a signal contradiction.

The output unit 55 includes power lamp driving modules for switching power to corresponding signal lamps according to control data (present information) received from the main control unit (MLC) 3 so that each signal lamp is turned on or blinked do.

The main controller MLC converts an AC high voltage power supplied from the outside into a DC low voltage power and supplies the DC low voltage power to each of the sub control units MLC and the sub control unit SLC, (SLC), and simultaneously transmits the control data (present information) to the sub control unit (SLC). Each sub control unit (SLC) controls the equal output unit (55) in accordance with the present information received from the main control unit So that the lamps 21 are turned on and off.

That is, the present invention adds sub-controller units (SLC) between the main control unit (MLC) and the signal lamps, and the main control unit (MLC) and each sub control unit (SLC) And the equal output unit 55 of the sub control unit SLC is configured to perform the SMPS for the signal lamp, thereby reducing the space consumption of the main control unit (MLC) and simplifying the signaling system.

5 is a block diagram showing the main control unit (MLC) of FIG.

The main control unit (MLC) 3 of FIG. 5 includes a power supply unit 32 for converting AC power supplied from outside into DC power and supplying power to the internal board of the housing, and a control unit 30 A database unit 32 for storing data, an operation panel unit 33 for manually operating a machine and an operator, an image sensing function, a GPS reception function, and a radio time signal function And an interface unit 36 for supporting data communication with the traffic equipment and the sub control unit (SLC) 5 through the communication line of the cable 7. At this time, the option unit 34 means a GPS receiver, an image sensor, a radio time signal, and the like.

The main control unit (MLC) 3 is provided with eight cable ports 38 to which a cable 7 is connected, and a cable 7 is connected to each of the cable ports 38. At this time, since the main control unit (MLC) 3 can set up the maximum number of main control units (SLC) 5 according to the signal direction when the main control unit SLC is installed at the intersection, Eight cable ports 38 are provided so that the cable 7 can be connected.

The power supply unit 32 converts the AC high voltage power supplied from the outside into a DC low voltage power and supplies the converted DC low voltage power to each of the sub control units (SLC) through each cable.

The control unit 30 is an OS (Operating System) of the main control unit (MLC) 3 and manages and controls the control objects 31, 32, 33, 34, 35, do.

The operation panel unit 33 enables the operation of the traffic light control device by the traffic police or the like.

The option unit 34 is mounted as an additional board as needed to provide an additional function.

6 is an exemplary diagram illustrating an ID scheme assigned to each of the sub-control unit SLCs of the present invention.

Since the data communication between the main control unit (MLC) 3 and the sub control unit (SLC) 5 is performed in the digital traffic signal control system 1 of the present invention, each sub control unit 5 is given an identification ID . At this time, the effect of management and operation varies depending on the form of the ID system of the sub-control unit (SLC) 5.

Accordingly, according to the present invention, '10' of the ID is assigned a number according to the traveling direction of the vehicle, and '1' of the ID is assigned according to the installation position from the intersection among the SLCs having the same '10' The number of the place of the place.

Referring to FIG. 6, in the ID system of the present invention, '0' is assigned to '10' for the SLCs in the direction in which the vehicle traveling direction is toward the south in the drawing, '1' is assigned to '10' for the sub-control unit SLC in the direction toward the north, and '2' is assigned to the sub-control unit SLC for the direction in which the vehicle traveling direction is to the north. And '3' is assigned to the position of '10' for the sub-control unit SLC in the direction in which the vehicle traveling direction is directed to the east.

In addition, '4' is assigned to the '10' position for the SLCs in the direction of the vehicle traveling in the west toward the north and to the SLCs in the direction in which the vehicle traveling direction is in the northwest direction '5' is assigned to the position of '10', '6' is assigned to the position of '10' for the sub-control unit SLC in the direction of the vehicle traveling direction toward the northeast, '7' is assigned to the '10' position for the SLCs.

Also, in the present invention, the SLCs having the same '10' position are assigned '1' positions of the IDs in the order from the intersection toward the opposite directions. That is, as shown in FIG. 6, the sub-control units 5-1, 5-2, and 5-3 in which the position of the ID '10' is assigned as '2' 1 'of the ID is assigned as' 0' to the subordinate control unit 5-1 closest to the middle intersection and the ID of the subordinate control unit 5-1 becomes' 20 ' The ID of the ID 1 is assigned as 1 and the ID of the sub control unit 5-2 is 21 as the ID of the ID is assigned to the sub- Quot; is assigned as '2', and '1' of the ID is assigned as '22'.

At this time, the ID applied to the present invention uses 6 bits, and has a SLC separator of 1 bit, a direction ID of 3 bits, and a serial number of 2-bit stop lines.

FIG. 7 is a configuration diagram showing a channel connection scheme of the sub control unit (SLC) of FIG. 4, and FIG. 8 is another example of FIG.

The sub control unit (SLC) 5 includes an equal output unit 55 for switching on and off each of the signal lamps 21 as described above with reference to FIG. At this time, the equal output unit 55 is provided with 14 output terminals for switching a maximum of 14 channels for controlling each of the lamps of the assigned signals, and 14 lamp driving modules.

7, when the vehicle signal lamp is a four-color signal lamp, the sub control unit (SLC) 5 includes a vehicle signal lamp 210 having four lamps, a back lamp 220 having four lamps, And is connected to two pedestrian signal lamps 230 and 240 having two lamps. In this case, each lamp of the vehicle signal lamp 210 is connected to the first to fourth channels of the backlight unit 55, the lamps of the backlight unit 220 are connected to the fifth to eighth channels of the backlight unit 55, Each lamp of the pedestrian signal lamp 230 is connected to the 10th to 11th channels of the back output unit 55 and each lamp of the other pedestrian signal lamp 240 is connected to the 12th to 13th channels of the back output unit. At this time, the nine channels of the equal output unit 55 are not connected to the lamp.

The sub control unit (SLC) 5 includes a straight signal vehicle signal lamp 310 having three lamps and a left turn signal vehicle signal lamp 320 having three lamps as shown in FIG. 8 when the vehicle signal light is a three- A back light 330 having three lamps, and two pedestrian signal lamps 340 and 350 having two lamps. At this time, each of the lamps of the straight signal lamp signal lamp 310 is connected to one to three channels of the back output unit 55, and each lamp of the left turn signal vehicle signal lamp 320 is connected to the four to six channels of the back output unit 55 And each lamp of the backlight 330 is connected to channels 7 to 9 of the backlight 55 and each lamp of the one pedestrian signal lamp 340 is connected to channels 10 to 11 of the backlight 55. [ And each lamp of the other-side pedestrian signal lamp 350 is connected to channels 12 to 13 of the backlight unit.

That is, the sub-fishermen of the present invention are allocated to control one vehicle signal lamp, two pedestrian signal lamps adjacent to one vehicle signal lamp, and the rear surface of one vehicle signal lamp when installed at an intersection.

Fig. 9 is a view showing the sub-controller of Fig. 4, and Fig. 10 is a view showing the lamp driving module inserted into the slot of Fig.

The SLC 5 of the present invention has 14 slots 53 formed on one surface of the substrate 51 corresponding to the channels of 14 signal lamps as shown in FIG. Are provided with the lamp driving module 55 of Fig. 10 depending on whether the lamp is driven or not. At this time, since the coupling structure of the slot and the lamp driving module is a commonly used technique, a detailed description will be omitted.

That is, in the present invention, the sub control unit (SLC) 5 can easily control each signal lamp according to whether or not the lamp driving module 55 is coupled to each channel. In case of equipment failure, Since only the drive module can be replaced, the equipment can be easily checked and replaced.

1: digital traffic signal control system 3: main control unit
5: Sub-fisherman 20: Vehicle traffic light 30: Pedestrian traffic light
31: Database part 32: Power part 33: Operation panel part
34: Option part 36: Communication interface part
51: communication interface unit 53: DC-DC converter unit 55:
57: current detection unit 59: voltage detection unit

Claims (4)

A master local controller (MLC) for managing and controlling the signaling system;
Slave local controllers (SLCs) for controlling the power switching of the lamps of the pre-allocated signal lamps according to the present data transmitted from the main control unit (MLC);
A communication line for providing a path for data movement between the main control unit (MLC) and each sub control unit (SLC);
And low-voltage cables connected between the main control unit (MLC) and each sub control unit (SLC)
Wherein the main control unit (MLC) includes an active circuit for converting an AC power supplied from an external source to a DC low-voltage power source. The digital traffic signal control system according to claim 1, wherein the sub-control unit (SLC) is assigned an ID according to an installation direction from a vehicle traveling direction and an intersection. [Claim 2] The SLC as claimed in claim 2, wherein the sub control unit (SLC) controls one of the vehicle signal lamps, two pedestrian signal lamps adjacent to the one vehicle signal lamp, and a back surface of the one vehicle signal lamp when installed at an intersection Digital traffic signal control system. The main control unit (MLC) according to claim 3, wherein the sub control unit (SLC) further comprises a DC-DC converter unit for converting the DC low voltage power supplied from the main control unit (MLC) Control system.
KR1020150158025A 2015-11-11 2015-11-11 Digital traffic signal control system KR101762686B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150158025A KR101762686B1 (en) 2015-11-11 2015-11-11 Digital traffic signal control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150158025A KR101762686B1 (en) 2015-11-11 2015-11-11 Digital traffic signal control system

Publications (2)

Publication Number Publication Date
KR20170055177A true KR20170055177A (en) 2017-05-19
KR101762686B1 KR101762686B1 (en) 2017-07-28

Family

ID=59049560

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150158025A KR101762686B1 (en) 2015-11-11 2015-11-11 Digital traffic signal control system

Country Status (1)

Country Link
KR (1) KR101762686B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109754617A (en) * 2017-11-01 2019-05-14 张云超 A kind of high pass line efficiency method for controlling traffic signal lights, apparatus and system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101851320B1 (en) * 2017-11-02 2018-06-11 진재선 Flickering signal lamp and control method
EP3732664A4 (en) * 2017-12-31 2021-09-01 Axilion Ltd. Method, device, and system of traffic light control utilizing virtual detectors

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109754617A (en) * 2017-11-01 2019-05-14 张云超 A kind of high pass line efficiency method for controlling traffic signal lights, apparatus and system
CN109754617B (en) * 2017-11-01 2021-07-13 张云超 High-traffic-efficiency traffic signal lamp control system

Also Published As

Publication number Publication date
KR101762686B1 (en) 2017-07-28

Similar Documents

Publication Publication Date Title
KR101863838B1 (en) Intelligent street lights controlling and dimming management system
US8456322B2 (en) Warning light device having at least two warning lamps
US20100109898A1 (en) Warning light device having at least two warning lamps
KR101762686B1 (en) Digital traffic signal control system
KR102456952B1 (en) Apparatis for managing display device of ground crosswalk sign
CN105279995A (en) Road traffic guiding method based on positioning system and road traffic guiding system
KR101296672B1 (en) Railway car communication network system
CN104021692B (en) Highway communication bootstrap technique and highway communication based on road monitoring guide system
KR101429123B1 (en) sensor node, safety system of crossroad and controlling method thereof
KR101532420B1 (en) Automated detection system of failed LED traffic lights
CN214273738U (en) Tunnel vehicle collision early warning device based on attitude sensor
KR101902465B1 (en) Modulized controller of street lamp
CN105578675A (en) Internet airport navigation light display and control system
JP2008046682A (en) Traffic signal control system, traffic signal light drive system, drive device and traffic signal controller
CN104021691B (en) Traveling guidance system
KR101589663B1 (en) Traffic signal control system for interfacing wire and wireless communication
KR101683140B1 (en) traffic signal control system for enhancing signal safety and reliability
KR20050066403A (en) Control system for street lamp
CN104021681B (en) Based on road method for early warning and the road early warning system of satnav
CN114613154A (en) Road traffic signal management and control integrated system and implementation method thereof
CN204155460U (en) Based on the traveling guidance system of positioning system wireless time of arrival
CN204948404U (en) The Internet airfield aid light display and control system
KR101276935B1 (en) Traffic signal controller and signal driving unit mounted on traffic signal controller
CN104021693B (en) Driveway marker method based on radar detection and driveway designation system
CN107438305B (en) Lighting unit in intelligent outdoor lighting network

Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
GRNT Written decision to grant