KR101364850B1 - An apparatus for detecting failure of led lamp - Google Patents

An apparatus for detecting failure of led lamp Download PDF

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Publication number
KR101364850B1
KR101364850B1 KR1020120063373A KR20120063373A KR101364850B1 KR 101364850 B1 KR101364850 B1 KR 101364850B1 KR 1020120063373 A KR1020120063373 A KR 1020120063373A KR 20120063373 A KR20120063373 A KR 20120063373A KR 101364850 B1 KR101364850 B1 KR 101364850B1
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KR
South Korea
Prior art keywords
ac
unit
dc converter
led
power
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Application number
KR1020120063373A
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Korean (ko)
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KR20130139693A (en
Inventor
유영규
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엘에스산전 주식회사
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Priority to KR1020120063373A priority Critical patent/KR101364850B1/en
Publication of KR20130139693A publication Critical patent/KR20130139693A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R21/00Arrangements for measuring electric power or power factor
    • G01R21/06Arrangements for measuring electric power or power factor by measuring current and voltage
    • GPHYSICS
    • G08SIGNALLING
    • G08CTRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00Electric signal transmission systems
    • G08C19/02Electric signal transmission systems in which the signal transmitted is magnitude of current or voltage
    • H05B45/50
    • H05B47/105
    • H05B47/20
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/26Testing of individual semiconductor devices
    • G01R31/2607Circuits therefor
    • G01R31/2632Circuits therefor for testing diodes
    • G01R31/2635Testing light-emitting diodes, laser diodes or photodiodes

Abstract

According to an embodiment of the present invention, there is disclosed an apparatus for detecting a failure of an LED lamp of an aviation lighting facility using a constant current source, the apparatus comprising at least one connected to an AC-DC converter and a secondary side of the AC-DC converter. LED unit consisting of LED lamps; And a power measurement unit connected to the primary side of the AC-DC converter and configured to measure power consumed by the LED unit.

Description

Device for detecting failure of LED lamp {AN APPARATUS FOR DETECTING FAILURE OF LED LAMP}

The present invention relates to a device for detecting a failure of the LED lamp, and more particularly to a device for detecting a failure of the LED lamp used in the air-lighting facility.

Aeronautical lighting means the facilities prescribed by Ordinance of the Ministry of Transportation as aviation security facilities to assist the navigation of aircraft by light under the Aviation Law. Aircraft pilots perform most of the operations of the aircraft based on sight and hearing, but since most of this information is collected visually, the role of aviation lighting is very large. Conventionally, halogen lamps have been mainly used as such aerodrome lighting facilities. However, halogen lamps have many problems in terms of lifespan due to their low color efficiency and low heat, while being advantageous for color rendering and miniaturization.

In addition, the demand for high-efficiency devices is increasing due to the global energy efficiency demand.In response to the demands of the times, the lighting industry is the next generation light source (LED), which is more energy-saving and semi-permanent than conventional light sources. It is getting attention.

There are many advantages of LEDs, but energy consumption can be significantly reduced compared to conventional incandescent or halogen lamps. As a result, LEDs have recently penetrated into life by incandescent lamps, fluorescent lamps, halogen lamps and many other light sources that have been familiar with us. In response to this trend, the aviation industry is also increasing the demand for energy saving and maintenance costs by replacing halogen lamps with LED lamps.

The Individual Lamp Control and Monitoring System (ILCMS) for airlighting is a system that turns on and off airlighting on runways and taxiways and monitors the airlighting status. The power source of aerodrome lighting consists of a constant current source with a single loop. From the constant current regulator generating the constant current source to the final end ramp of the runway, there are tens to hundreds of ramps and the length of the track is several to several tens of kilometers. The single-loop aerodrome power supply supplies the power of the electronic circuit for operating the secondary side lamp and ILCMS through an embedded transformer with current transformer characteristics. Since airports communicate wirelessly between pilots and control towers, wired communication is preferred to suppress interference by other wireless communications. Since it is difficult to install new tracks in existing airports, the application of power line communication is essential in the individual lamp control and monitoring system of aeronautical lighting.

In such a situation, when the LED lamp is applied to the aviation lighting, if the LED lamp is applied to the existing aviation lighting facilities there is a problem that can not recognize whether or not the failure of the lighting lamps available in the existing aviation lighting facilities. Therefore, even if the LED lamp is applied to the aviation lighting facility, the situation is required to supply a device that can recognize or detect the failure of the LED lamp.

In the case of applying LED lamps to an aviation lighting facility, an apparatus for recognizing or detecting a failure of such LED lamps is proposed.

An apparatus for detecting a failure of an LED lamp of an aviation lighting facility using a constant current source according to an embodiment of the present invention, wherein the device is connected to the secondary side of the first AC-DC converter and the first AC-DC converter. LED unit consisting of at least one LED lamp; A power measurement unit connected to a primary side of the first AC-DC converter and configured to measure power consumed by the LED unit; A control unit for determining whether the primary side or the secondary side of the first AC-DC converter is disconnected or whether the LED lamp is broken according to the amount of power measured by the power measuring unit; And an input terminal and an output terminal of the first AC-DC converter, and when controlled to be in an OFF state, maintain the primary AC input terminal of the first AC-DC converter in a closed circuit, and turn on the state. And a switch unit configured to open the LED unit.

The power measuring unit includes: a voltage measuring unit configured to measure a primary side voltage of the first AC-DC converter; A current measuring unit configured to measure a primary side current of the first AC-DC converter; And a power calculator configured to calculate power by using the voltage measured by the voltage measuring unit and the current measured by the current measuring unit.

The control unit may be configured to transmit information on whether the LED unit failure to the upper monitoring panel, or to receive the on / off control signal of the LED lamp of the LED unit from the upper monitoring panel to control the on / off of the LED lamp. .

The apparatus may further comprise an open detector configured to detect that the LED portion is electrically open. The open detector may be configured to transmit an open detection signal to the switch unit indicating that the LED unit is electrically open.

The apparatus includes an isolation transformer for supplying a constant current to the LED unit; A power line communication unit connected to a primary output terminal of the first AC-DC converter to receive an AC signal passing through the AC-DC converter; And a second AC-DC converter connected between the power line communication unit and the secondary side of the insulation transformer to transfer an AC signal transmitted from the power line communication unit to the secondary side of the insulation transformer, wherein the switch is in an on state. The insulation transformer, the power line communication unit and the second AC-DC converter may be configured to form a closed circuit.

According to one embodiment of the present invention, it is possible to detect whether or not the occurrence of a lamp driven by a DC power source such as LED can quickly check the operation abnormality of the aviation lighting facility and take appropriate measures.

1 is a block diagram of an individual lamp control and monitoring system of an aeronautical lighting facility according to an embodiment of the present invention.
2 is a block diagram of an individual lighting device of the aviation lighting facility according to an embodiment of the present invention.
3 is a block diagram of a power measurement unit according to an embodiment of the present invention.
4 is a block diagram illustrating a non-powered lamp opening detection unit according to an embodiment of the present invention.
FIG. 5 is a block diagram of an individual lighter and a lamp connected thereto in the aviation lighting facility according to the exemplary embodiment of the present invention.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms and should be construed in a sense and concept consistent with the technical idea of the present invention. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention, and not all of the technical ideas of the present invention are included. Therefore, It is to be understood that equivalents and modifications are possible.

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

1 is a block diagram of an individual lamp control and monitoring system of an aeronautical lighting facility according to an embodiment of the present invention. 1 is a system that is generally buried beneath the runway of the airport, etc., is shown as briefly as possible for convenience of explanation and ease of understanding, and more configurations may be required in actual implementation.

The system may consist of a constant current regulator 10, an individual equalization controller 30, and individual equalization devices 100-1, 100-2, ..., 100-N configured to provide a constant current. The individual equalization controller 30 is for controlling the individual equalizing device constituting the closed loop with it, and can be supplied with the necessary voltage from the constant current by the insulation transformer 20.

The individual lighting device is a device for equalizing at least one lamp 140, and receives a voltage required for driving the same from the isolation transformers 110-1, 110-2, ..., 110-N. Firearms 1 to N may turn on or off the at least one lamp to implement the operation required for air traffic control.

A more specific example of the air lighting facility will be described with reference to FIGS. 2 to 4 to be described later.

2 is a block diagram of an individual lighting device of the aviation lighting facility according to an embodiment of the present invention. The configuration shown in FIG. 2 shows one of each of the individual lighting devices 100_1, 100_2, ..., 100_N shown in FIG. 1 in detail.

The AC signal transformed through the isolation transformer 110 flows along the closed circuit of the individual equalizer 120. The AC signal passes through the primary side of the second AC-DC converter 131 and passes through the primary side of the power line communication unit 122 and the first AC-DC converter 121 to the secondary side of the insulation transformer 110. I can go home.

The AC signal applied to the primary side of the second AC-DC converter 131 may be converted into a DC signal and output to the secondary side. This DC signal can drive the LED lamp 132.

In addition, an AC signal returning to the secondary side of the isolation transformer 110 is applied to the primary side of the power line communication unit 122, and the power line communication unit is connected to the individual lighting device and the upper monitoring panel (for example, the individual light controller 30 of FIG. 1). Can provide communication with)). Meanwhile, the power line communication unit may perform the same function through another separate communication unit, and may provide wired or wireless communication with the upper monitoring panel.

An AC signal returning to the secondary side of the insulation transformer may be applied to the primary side of the first AC-DC converter 121 through the primary side of the power line communication unit. The first AC-DC converter may convert the AC signal into a DC signal to supply power for driving the power line communication unit 122 and the controller 123.

On the other hand, if an abnormality occurs in the LED unit 130 (by a failure or an accident), if the closed circuit of the individual lighter 120 is opened, the power supply to the individual lighter is lost, thereby performing its function at all. There will be no. This is because, as described above with reference to FIG. 1, since a constant current source is used as a power source used in an aviation lighting facility, opening of a part of the entire closed circuit configuration causes inoperability of all components. Therefore, in preparation for this, the switch unit 124 and the no-power lamp opening detection unit 125 may be provided.

For example, the abnormality of the LED unit may be a failure of the LED lamp or disconnection of the primary side or the secondary side of the second AC-DC converter.

The non-power lamp opening detection unit may be configured to detect whether the LED unit is open. When it is detected that the LED unit is electrically open, the non-power lamp opening detection unit may be configured to transmit an opening detection signal to the switch unit and the control unit. The switch unit receiving the open detection signal may close the switch so that the insulation transformer, the first AC-DC converter, and the power line communication unit configure a closed circuit. The non-powered lamp opening detector is shown in more detail in FIGS. 4 and 5 to be described later.

The switch unit 124 performs the function of maintaining the primary AC signal input terminal of the second AC-DC converter 131 in a closed circuit in such a case in preparation for the opening of the closed circuit due to an abnormality of the LED unit. can do. In other words, the switch unit between the insulation transformer and the second AC-DC converter, even when the LED unit 130 is electrically opened, the insulation transformer 110 and the first AC-DC converter 121. In addition, the power line communication unit 122 may be disposed on the AC signal path so as to form a closed circuit to close the switch.

When the switch unit is arranged and performs the function as described above, the first AC-DC converter 121 operates even when the LED unit is electrically opened to supply power to the power line communication unit 122 and the control unit 123. The supply can detect the state of the LED unit and transmit it to the upper monitoring panel.

In addition, the switch unit may be used for the purpose of turning on / off the LED lamp of the LED unit. The controller or the upper monitoring panel may control the switch unit to turn off the LED lamp of the LED unit.

In addition, the first AC-DC converter may provide driving power to the power measurement unit 126. The power measuring unit may be configured to measure the power consumption of the LED unit.

The power measuring unit may measure or calculate a power consumption amount by measuring a primary current and a voltage of the second AC-DC converter.

The amount of power consumption of the LED lamp 132 connected to the secondary side of the second AC-DC converter may be measured or calculated using the measured current and voltage values.

The power measuring unit may provide information on the power consumption of the LED unit, more specifically, the LED lamp based on the measured or calculated power amount. In other words, the measured or calculated power amount is transmitted to the control unit, and the control unit may determine the state, failure or normal operation of the LED unit based on the power amount.

For example, the controller may determine whether the second AC-DC converter is disconnected from the primary side or the secondary side based on the measured or calculated amount of power. If the primary side disconnection of the second AC-DC converter occurs, the amount of power will have a value close to zero. In addition, if the secondary side disconnection of the second AC-DC converter occurs, the amount of power will have a much smaller value (eg, a first level value) than in normal operation (with the LED lamp turned on). In this manner, the controller may determine whether the second AC-DC converter is disconnected from the primary side or the secondary side.

For example, the controller may determine an operation state, a failure, or a normal operation of the LED lamp based on the measured or calculated power amount. Unlike the illustrated in FIG. 2, assuming that the three LED lamps are configured in parallel, the amount of power when the first parallel LED lamp, the second parallel LED lamp and the third parallel LED lamp operate normally and the three If either of the parallel LED lamps fails, the amount of power will be different. Therefore, the control unit may determine the operation state of the LED lamp through the difference in the amount of power.

In addition, the control unit may transmit the information regarding the determined state to a higher monitoring group (for example, the individual equalization controller 30 of FIG. 1). The upper monitoring panel may receive the information and transmit an on / off control signal of the LED unit or the LED lamp so that the controller performs the on / off control through the switch unit.

A detailed description of the power measurement unit will be further described with reference to FIG. 3.

3 is a block diagram of a power measurement unit according to an embodiment of the present invention. The power measuring unit includes a current measuring unit 126-1 configured to measure a current of the primary side of the second AC-DC converter, and a voltage measuring unit 126 configured to measure a voltage of the primary side of the second AC-DC converter. And a power calculator 126-3 configured to calculate the consumed power or the amount of power using the measured voltage and the measured current.

The current measurement and the voltage measurement are each provided with an interface, which can be measured from the primary side lead of the second AC-DC converter. The description of the interface is shown in more detail in FIG. 5.

4 is a block diagram illustrating a non-powered lamp opening detection unit according to an embodiment of the present invention. The open detector 125 may include an open detector 125-1 configured to detect the opening of a lamp and an open trigger unit 125-2 configured to output a lamp open signal (open detection signal) according to the open detection result. It may include. The open detector is composed of an analog circuit which is not applied and operates the open trigger unit to output the lamp open signal when the lamp is in an open state (high impedance).

FIG. 5 is a block diagram of an individual lighter and a lamp connected thereto in the aviation lighting facility according to the exemplary embodiment of the present invention. The circuit configuration shown in FIG. 5 excludes only the current measurement interface 127 and the voltage measurement interface 128, and the open detection unit 125-1, the open trigger unit 125-2, and the open detection interface 129. Same as that of FIG. 2. Therefore, the description of the remaining components except for the different components will be omitted.

The current measuring interface may be an interface configured to measure a current flowing through the secondary side of the first AC-DC converter or the primary side lead of the second AC-DC converter. For example, a current transformer is usually used as the current measuring interface, and the current measuring interface may convert a current flowing in the lead into a voltage value and transmit the value to the current measuring unit of the power measuring unit.

The voltage measuring interface may be an interface configured to measure voltages at both ends of the secondary side of the first AC-DC converter or the primary wire of the second AC-DC converter. The measured voltage may be transmitted to the voltage measuring unit of the power measuring unit.

As such, the values transmitted to the current measuring unit and the voltage measuring unit are converted into power values by the power calculating unit of the power measuring unit, and the power measuring unit transmits the value to the control unit so that the control unit operates the LED unit. Make sure you know about

In addition, the open detection interface may detect a signal for detecting whether the LED lamp is open from the conductive wire of the individual lamp. The signal represents a value according to the magnitude of the impedance, and the signal may be applied to the open detector to determine whether the value represented by the signal means opening of the LED lamp.

If the signal means opening of the LED lamp, the open trigger unit may output an open detection signal to the controller. The control unit receiving the open detection signal may transmit this information to the upper monitoring panel. In addition, according to a specific implementation environment, the control unit may control to close the switch unit when receiving the open detection signal.

Meanwhile, although reference numeral 130 shown in FIGS. 2 and 5 attached to the present specification is referred to as an LED unit, this may also be referred to as a lamp unit, and the LED lamp 132 may be applied to any lamp driven by a DC power source. Do.

Having described the embodiments of the present invention above, those of ordinary skill in the art will recognize that these embodiments are illustrative rather than limiting, and that various changes and modifications may be made without departing from the scope or spirit of the invention Variations, and modifications may be made without departing from the scope of the present invention.

10: constant current regulator 20: isolation transformer
30: individual lighting controller 110: insulation transformer
120: individual lighter 130: lamp unit
121: first AC-DC converter 122: power line communication unit
123: control unit 124: switch unit
125: no power lamp opening detection unit 126: power measurement unit
127: current measurement interface 128: voltage measurement interface

Claims (7)

  1. A device for detecting a failure of an LED lamp of an aviation lighting facility using a constant current source,
    An LED unit comprising a first AC-DC converter and at least one LED lamp connected to a secondary side of the first AC-DC converter;
    A power measurement unit connected to a primary side of the first AC-DC converter and configured to measure power consumed by the LED unit;
    A control unit for determining whether the primary side or the secondary side of the first AC-DC converter is disconnected or whether the LED lamp is broken according to the amount of power measured by the power measuring unit; And
    Is configured between the input terminal and the output terminal of the first AC-DC converter, the control unit controls the primary AC input terminal of the first AC-DC converter in the off state when the state is off, and if the ON state And a switch unit configured to open the LED unit.
  2. The method of claim 1, wherein the power measuring unit:
    A voltage measuring unit configured to measure a primary voltage of the first AC-DC converter;
    A current measuring unit configured to measure a primary side current of the first AC-DC converter; And
    And a power calculator configured to calculate power by using the voltage measured by the voltage measuring unit and the current measured by the current measuring unit.
  3. delete
  4. The method of claim 1, wherein the control unit:
    LED lamp failure detection device configured to transmit information on whether the LED unit failure to the upper monitoring panel, or to control the on / off of the LED lamp by receiving the on / off control signal of the LED lamp of the LED unit from the upper monitoring panel .
  5. The method of claim 1,
    And an open detector configured to detect that the LED portion is electrically open.
  6. The method of claim 5, wherein the open detection unit:
    And an open detection signal to the switch unit informing that the LED unit is electrically open.
  7. The method of claim 1,
    An isolation transformer for supplying a constant current to the LED unit;
    A power line communication unit connected to a primary output terminal of the first AC-DC converter to receive an AC signal passing through the AC-DC converter; And
    A second AC-DC converter connected between the power line communication unit and the secondary side of the insulation transformer and transferring an AC signal transmitted from the power line communication unit to the secondary side of the insulation transformer,
    And the switch is turned on so that the insulation transformer, the power line communication unit, and the second AC-DC converter form a closed circuit.
KR1020120063373A 2012-06-13 2012-06-13 An apparatus for detecting failure of led lamp KR101364850B1 (en)

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KR101364850B1 true KR101364850B1 (en) 2014-02-20

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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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200480615Y1 (en) * 2014-10-31 2016-06-24 한국철도공사 Railroad Traffic Light LED Module Test Device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200442855Y1 (en) * 2007-08-09 2008-12-17 주식회사 가보테크 Automatic flasher having a fault detection function of the lamp and ballast
KR20090079709A (en) * 2008-01-18 2009-07-22 (주)세오전자 Light Control Device Using in LED Lamp

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200442855Y1 (en) * 2007-08-09 2008-12-17 주식회사 가보테크 Automatic flasher having a fault detection function of the lamp and ballast
KR20090079709A (en) * 2008-01-18 2009-07-22 (주)세오전자 Light Control Device Using in LED Lamp

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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