KR101199034B1 - Light Control System - Google Patents

Light Control System Download PDF

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Publication number
KR101199034B1
KR101199034B1 KR1020110090799A KR20110090799A KR101199034B1 KR 101199034 B1 KR101199034 B1 KR 101199034B1 KR 1020110090799 A KR1020110090799 A KR 1020110090799A KR 20110090799 A KR20110090799 A KR 20110090799A KR 101199034 B1 KR101199034 B1 KR 101199034B1
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KR
South Korea
Prior art keywords
communication protocol
voltage
led
lighting
controller
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Application number
KR1020110090799A
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Korean (ko)
Inventor
이창훈
Original Assignee
늘솜주식회사
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Priority to KR1020110090799A priority Critical patent/KR101199034B1/en
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Publication of KR101199034B1 publication Critical patent/KR101199034B1/en

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    • H05B47/175
    • H05B45/10
    • H05B45/46
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00Energy efficient lighting technologies
    • Y02B20/30Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
    • Y02B20/34Inorganic LEDs
    • Y02B20/341Specially adapted circuits
    • Y02B20/346Switching regulators
    • Y02B20/347Switching regulators configured as a current source

Abstract

The present invention relates to a lighting control system, and more particularly, it is possible to control both a lighting module that supports one-way communication and a lighting module that supports two-way communication, and the central controller knows a failure state of the lighting module of one-way communication protocol. The LED lighting control system is a light control system that can measure at least one of the voltage and current of at least one LED module, and the control signal received from the central control device to which the two-way communication protocol which can transmit and receive is applied. The controller transmits to the controller to which the one-way communication protocol is applied, and when the measured value measured by the measuring unit corresponds to the abnormal operating range, the identification information and the abnormal signal of the LED module corresponding to the measured value to the central control device of the bidirectional communication protocol. Contains the transmitting adapter.

Description

Light Control System {Light Control System}

The present invention relates to a lighting control system, and more particularly, it is possible to control both a lighting module that supports one-way communication and a lighting module that supports two-way communication, and the central controller knows a failure state of the lighting module of one-way communication protocol. It is a lighting control system.

For lighting control systems, the industry is using the Digital Addressable Lighting Interface (DALI) standard. The digital lighting control standard is a digital communication lighting control system that satisfies the requirements by assigning different addresses to different combinations of complex lighting scenes to the user's needs. Referring to FIG. 1, the digital lighting control standard is changing from the DMX-512 standard of one-way communication to the DMX-512A or RDM (Remote Device Management) standard of bidirectional communication. However, it is necessary to continue to use the LED module of the last stage that was used previously, so that the old protocol LED module can be used continuously. In addition, the LED module is composed of a large number of people, it was difficult to determine this by manpower when the LED failed. There is a need for a device that can automatically determine whether a LED is bad.

It is an object of the present invention to provide a lighting control system that allows a central control device to know when a LED of a lighting module to which a one-way communication protocol is applied is broken.

Another object of the present invention is to provide a lighting control system capable of simply measuring a voltage or current for determining whether an LED module has failed.

LED lighting device control system according to the present invention, a controller to which the one-way communication protocol is applied, including the controller for controlling the light generation of at least one LED module in response to the received control signal, A measuring unit measuring at least one of voltage and current of at least one LED module; And transmitting a control signal received from the central control device to which the bidirectional communication protocol to which the transmission and reception is possible is transmitted to the controller, and when the measured value measured by the measuring unit corresponds to a preset abnormal operating range, the LED module corresponding to the measured value. Adapter for transmitting the identification information and the abnormal signal of the bidirectional communication protocol to the central control device.

The lighting control system according to the present invention enables two-way communication between a lighting module to which different communication protocols are applied and a central control device, and automatically detects whether a failure of the LED module is detected in the central control device. Since it is not necessary to replace the lighting module with the one-way communication protocol with the lighting module with the two-way communication protocol, the model replacement cost can be reduced, and the existing lighting module can be used as it is, thereby reducing the installation cost. In addition, it is possible to automatically determine which LED module is abnormal, which can help equipment maintenance. By using a comparator without using an analog-to-digital converter (ADC), voltage and current measurements for determining the abnormality of the LED module are possible with a simple structure and low cost.

1 is a flow diagram relating to a digital lighting control standard,
2 is a block diagram of an LED lighting device control system according to an embodiment of the present invention;
3 is a detailed block diagram of the measuring unit of FIG. 2;
4 is a block diagram of a voltage sensor according to an embodiment of the present invention;
5 is a block diagram of a current sensor according to an embodiment of the present invention;
6 is a flowchart illustrating a method of reporting an abnormal condition in the adapter of FIG. 2, and
7 is a block diagram of a lighting module including a controller to which a one-way communication protocol is applied according to another embodiment of the present invention.

The suffix "module" and " part "for components used in the following description are given merely for convenience of description, and do not give special significance or role in themselves. Accordingly, the terms "module" and "part" may be used interchangeably.

2 is a block diagram of an LED lighting device control system according to an embodiment of the present invention, Figure 3 is a detailed block diagram of the measuring unit of FIG.

Referring to FIG. 2, the LED lighting device control system includes a central control apparatus 100, a communication line 110, a power line 120, a lighting module 200 of a bidirectional communication protocol method, and a lighting module of a one-way communication protocol method. 300.

The central control apparatus 100 controls the networked lighting modules 200, 300 as a whole. Networked lighting modules 200, 300 locally control LED modules 221, 223, 225, ..., 331, 333, 335, .... Although the LED luminaire control system has been described as including only two lighting modules in this embodiment, it may be composed of a plurality of lighting modules.

The central control apparatus 100 transmits a lighting command to each lighting module through the communication line 110. The communication line 110 may be a wired or wireless network, or a mixture of wired and wireless networks. For wireless networks, technologies such as power line communication, Bluetooth, Radio Frequency Identification (RFID), infrared data association (IrDA), ultra wideband (UWB), ZigBee, and wireless Internet communication are used. Can be. The power line delivers power from a power stage (not shown) to each lighting module. The power supply stage may be one or more than two. In this embodiment, the central control apparatus 100 is shown to supply power, but is not limited thereto. The power supply may be separated from the central control device 100. The central control apparatus 100 may bidirectionally communicate with the lighting module through the communication line 110. The DMX512-A or RDM standard can be applied for bidirectional communication.

The lighting module 200 of the bidirectional communication protocol may include a bidirectional communication controller 210 and a plurality of LED modules 221, 223, 225,..., 220. The bidirectional communication controller 210 may bidirectionally communicate with the central control apparatus 100. The LED modules 220 may each have a unique address. The bidirectional communication controller 210 receives and interprets an illumination command from the central control apparatus 100 to control the LED module 220. For example, the power supplied to the LED module 220 corresponding to the LED module address included in the lighting command is controlled according to the lighting command. The bidirectional communication controller 210 may determine the state of the LED modules 220 and inform the central control apparatus 100 of the abnormality through the communication line 110.

The lighting module 300 of the one-way communication protocol may include a controller 310, a plurality of LED modules 321, 323, 325,... 320, an adapter 330, and a measuring unit 340. .

The LED modules 320 generate light, and the amount of light is adjusted according to a power source controlled by the controller 310. The LED modules 320 each have a unique address.

The controller 310 interprets an illumination command to control the power supplied to the LED modules 320. Using the unique addresses of each of the LED modules 320, the controller 310 can control each of the LED modules 320 individually. Power supplied to the lighting module 300 of the one-way communication protocol may be supplied from the sub power line 125 branched from the main power line 120.

The controller 310 can only receive the illumination command and cannot transmit information to the central control apparatus 100. For example, the lighting module 300 of the old protocol may be applied to the DMX512 standard. The arrangement of the lighting modules 200 and 300 of the old and new protocols adds the lighting module 200 of the bidirectional communication protocol to the lighting module 300 of the existing one-way communication protocol, and the bidirectional communication protocol at the central controller of the one-way communication protocol. This may occur when the central control unit 100 is replaced with.

The measuring unit 340 measures the voltage or current supplied to the LED modules 320. The measuring unit 340 transmits the measured voltage value or current value to the adapter 330. Referring to FIG. 3, in order to measure the current and voltage supplied to the LED modules 320, the measuring unit 340 measures the voltage sensor 342 and the current measuring the voltage of the negative power line 125. The current sensor 344 may be provided.

The adapter 330 receives the lighting command from the central control apparatus 100 and transmits the lighting command to the controller 310. The adapter 330 may interpret the lighting command by itself. When the lighting command with the bidirectional communication protocol is different from the lighting command with the one-way communication protocol, the adapter 330 may convert the lighting command with the bidirectional communication protocol into the lighting command with the one-way communication protocol and transmit the same to the controller 310. have. The adapter 330 may generate its own lighting command for testing and send it to the controller 310. The adapter 330 may transmit the state of the controller 310 or the measured value measured by the measuring unit 340 to the central control apparatus 100.

4 is a block diagram of a voltage sensor according to an embodiment of the present invention. See FIG. 3. In the present specification, the operation of the LED assumes that an operating voltage is applied and the light of the LED is controlled by the current. Normally PWM control is used.

Referring to FIG. 4, the voltage sensor 342 is composed of a comparator 343. The comparator 343 compares the reference voltage Vref0 with the voltage Vs supplied to the LED modules 320 and outputs the digital value. The digital value is sent to the adapter 330. The comparator 343 outputs 0 when the supply voltage Vs is higher than the reference voltage Vref0 and low when 1 is low. As a comparator 343 a simple and low cost op amp can be used. The reference voltage Vref0 is preferably set to the minimum voltage or the minimum voltage of the normal operating voltage range minus the margin voltage. In the present embodiment, only one reference voltage is compared, but a plurality of reference voltages may be compared. Although the voltage supplied to the LED modules 320 is measured in this embodiment, the present invention is not limited thereto, and the respective voltages supplied to the LED modules 321, 323, and 325 may be measured. Using a comparator can simplify the device by not having to measure the actual value of the supply voltage.

5 is a block diagram of a current sensor according to an embodiment of the present invention. See FIG. 3.

Referring to FIG. 5, the current sensor 344 includes a current-voltage converter 350 first to third comparators 361, 363, and 365. Current-voltage converter 350 generates a voltage proportional to the current to be measured. The first to third comparators 361, 363, and 365 compare the converted voltage Vi with the first to third reference voltages Vref1, Vref2, and Vref3 and output the digital values. The output digital value is transmitted to the adapter 330. In the present embodiment, the current-voltage converter 350 checks the total current supplied to the LED modules 320, but may check the current supplied to each LED module 321, 323, and 325. However, it is more preferable to install a current-voltage converter in a power line supplied to a group of LED modules controlled by one controller.

In the present embodiment, the first reference voltage Vref1 has a value corresponding to the current supplied when one LED module operates, and the second reference voltage Vref2 corresponds to the current supplied when two LED modules operate. The third reference voltage Vref3 has a value corresponding to the current supplied when the three LED modules operate. Accordingly, the adapter 330 may determine how many LED modules operate by using a signal output from each comparator. The adapter 330 may interpret the lighting command to know which LED module should operate. The adapter 330 may determine whether the actual number of operations is normal by comparing the actual number of operations with the number of LED modules to be operated. The adapter 330 may track the unique address of the LED module in an abnormal state by using the number of LED modules that are actually operated, the number of LED modules to be operated, and the unique address of the LED modules to be operated.

6 is a flowchart illustrating a method of reporting an abnormal state in the adapter of FIG. 2.

Referring to Figure 6, the adapter 330 is set to the test mode to determine the state of each of the LED modules 320, and generates a test lighting command (S410). The test illumination command is preferably set such that each of the LED modules 320 individually emits light at a time. The test lighting command may be generated in the central control apparatus 100. In this embodiment, a test lighting command is used to check whether an abnormal state is present, but is not limited thereto. For example, an abnormal state of each LED module 320 may be checked even during normal operation rather than test operation.

The adapter 330 receives the voltage value and the current value measured by the measuring unit 340 (S420).

The adapter 330 matches the received measured value (current value and voltage value) with the unique address of the LED module corresponding to the measured value (S430). Matching can be done by interpreting the lighting command and checking the LED module that is currently emitting.

The adapter 330 determines whether an abnormal state of the LED module (S440). The abnormal state may be checked whether the voltage value is within the setting range, the current value is within the setting range, or by analyzing the illumination command to generate the estimated power value and comparing the estimated power value with the measured power value. .

When checking for abnormal conditions during normal operation rather than test operation, two or more LED modules can emit light at the same time. In this case, the adapter 330 preferably uses a method of comparing the estimated power value with the measured power value. The adapter 330 interprets the illumination command to estimate the total power value and compare it with the measured power value. The measured power value corresponds to the estimated total power value since it is the total amount of power consumed by the LED modules in operation. As a result of comparing the estimated power value and the measured power value, it may be understood that at least one of the LED modules in operation is abnormal. The adapter 330 may generate an LED module candidate list estimated as an abnormal state and keep track of the LED module candidate to detect an abnormal LED module. In this embodiment, the adapter 330 is described as determining whether the abnormal state, but is not limited thereto. The adapter 330 may transmit the measured value to the central control apparatus 100 and determine whether the LED module is in an abnormal state in the central control apparatus 100.

If it is determined that there is an abnormal state, the adapter 330 reports the abnormal state to the central control apparatus 100 (S450). The report includes the unique address of the faulty LED module and what is the fault condition (short, open or power difference).

7 is a block diagram of a lighting module including a controller to which a one-way communication protocol is applied according to another embodiment of the present invention.

Referring to FIG. 7, the lighting module includes a controller 510, an adapter 330, a plurality of LED modules 541, 543, 545, ... 540, and a light receiving unit 550; 551, 553, 555. Including ..).

The LED modules 540 generate light, and the amount of light is adjusted according to a power source controlled by the controller 510. The LED modules 540 each have a unique address.

The controller 510 interprets the lighting command to control the power supplied to the LED modules 540. Using the unique addresses of each of the LED modules 540, the controller 510 can individually control each of the LED modules 540.

The controller 510 may only receive an illumination command and may not transmit information to a central control device (not shown).

The light receiving unit 550 includes a plurality of light sensors 551, 553, and 555 for measuring the amount of light of the LED modules 540. Each photosensor 551, 553, 555 has a unique address of the corresponding LED module. The measured light quantity is transmitted to the adapter 530 via the communication bus 560.

The adapter 530 receives the lighting command from the central control device and sends the lighting command to the controller 510. The adapter 530 may interpret the lighting command by itself. When the lighting command with the bidirectional communication protocol is different from the lighting command with the one-way communication protocol, the adapter 530 may convert the lighting command with the bidirectional communication protocol into the lighting command with the one-way communication protocol and transmit the same to the controller 510. have. The adapter 530 may generate its own lighting command for testing and send it to the controller 510. The adapter 530 transmits the state of the controller 510 or the measured value measured by the light receiver 540 to the central control apparatus 100.

The adapter 530 determines whether the measured value measured by the light receiver 550 falls within a preset range. If the measured value does not correspond to the preset range, the adapter 530 may determine that the abnormal state, and transmit the unique address of the LED module determined to the abnormal state to the central control device. The abnormal state determination may allow the adapter 530 to determine the central control apparatus by transmitting a measurement value to the central control apparatus.

The present invention can also be embodied as computer-readable codes on a computer-readable recording medium. A computer-readable recording medium includes all kinds of recording apparatuses in which data that can be read by a computer system is stored. Examples of the computer-readable recording medium include a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like, and may be implemented in the form of a carrier wave (for example, transmission via the Internet) . The computer readable recording medium may also be distributed over a networked computer system so that computer readable code can be stored and executed in a distributed manner. And functional programs, codes, and code segments for implementing the present invention can be easily inferred by programmers skilled in the art to which the present invention pertains.

In addition, although the preferred embodiment of the present invention has been shown and described above, the present invention is not limited to the specific embodiments described above, but the technical field to which the invention belongs without departing from the spirit of the invention claimed in the claims. Of course, various modifications can be made by those skilled in the art, and these modifications should not be individually understood from the technical spirit or the prospect of the present invention.

310, 510: controllers 321, 323, 353: LED module
330, 530: adapter 340: measuring unit
550: light receiver

Claims (8)

  1. An LED lighting device control system including a controller to which the one-way communication protocol is applied to control the light generation of each of the plurality of LED modules in response to the received control signal,
    Wherein the controller applies a constant operating voltage to each of the plurality of LED modules and adjusts current to control the light of each of the plurality of LED modules, wherein the system comprises:
    A measuring unit including a current-voltage converter for converting a current of power supplied to the plurality of LED modules into a voltage, and a comparator for generating a digital value by comparing the converted voltage with a predetermined reference voltage; And
    The control signal received from the central control device to which the bi-directional communication protocol to which the transmission and reception is possible is transmitted to the controller. It includes an adapter for transmitting the identification information and the abnormal signal of the analyzed LED module to the central control device of the bidirectional communication protocol,
    The measurement unit further includes a voltage and current sensor for measuring the voltage and current of the power supply,
    The adapter generates a lighting command for testing itself and transmits a test control signal to the controller, and the measured power according to the voltage and current measured by the measuring unit is different from the estimated power corresponding to the test control signal. If there is, transmit to the central control device of the bidirectional communication protocol,
    The system further includes an optical sensor unit for measuring each light generated in the plurality of LED modules,
    The adapter determines that an abnormal state when the measured light does not fall within the preset range, and transmits the identification information of the LED module in the abnormal state to the central control device of the bidirectional communication protocol. system.
  2. delete
  3. delete
  4. delete
  5. The method of claim 1,
    The measuring unit includes a plurality of the comparator,
    A first comparator of the plurality of comparators compares the converted reference voltage with a first reference voltage when one LED module of the plurality of LED modules is operated to generate a first digital value,
    A second comparator of the plurality of comparators generates a second digital value by comparing the converted reference voltage with a second reference voltage when at least two or more LED modules of the plurality of LED modules operate;
    And said adapter tracks at least the LED module by comparing at least said first and second digital values with said control signal.
  6. delete
  7. The method of claim 1,
    The adapter converts the control signal received from the central control device of the two-way communication protocol to the control signal of the one-way communication protocol and transmits to the controller.
  8. The method of claim 1,
    The bidirectional communication protocol is DMX-512A or RDM (Remote Device Management), the one-way communication protocol is a LED lighting device control system, characterized in that the DMX-512.
KR1020110090799A 2011-09-07 2011-09-07 Light Control System KR101199034B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10178742B2 (en) 2016-01-13 2019-01-08 Samsung Electronics Co., Ltd. LED driving apparatus and lighting apparatus

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200394747Y1 (en) * 2005-06-22 2005-09-05 (주)디택 The Control System for a numerous Lighting
JP2007005104A (en) * 2005-06-23 2007-01-11 Toshiba Lighting & Technology Corp Illumination control device
JP2008522349A (en) * 2004-11-29 2008-06-26 ティーアイアール システムズ リミテッド Integrated module lighting unit
KR100988763B1 (en) * 2007-12-28 2010-10-20 (주)한국이엔씨 Dignostic method for manufacturing intelligent distrtibuting board cabinet panel and power supply

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008522349A (en) * 2004-11-29 2008-06-26 ティーアイアール システムズ リミテッド Integrated module lighting unit
KR200394747Y1 (en) * 2005-06-22 2005-09-05 (주)디택 The Control System for a numerous Lighting
JP2007005104A (en) * 2005-06-23 2007-01-11 Toshiba Lighting & Technology Corp Illumination control device
KR100988763B1 (en) * 2007-12-28 2010-10-20 (주)한국이엔씨 Dignostic method for manufacturing intelligent distrtibuting board cabinet panel and power supply

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10178742B2 (en) 2016-01-13 2019-01-08 Samsung Electronics Co., Ltd. LED driving apparatus and lighting apparatus

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