KR20080052784A - Control system of beacon - Google Patents

Abstract

A control system of a beacon is provided to facilitate maintenance and repair of the beacon and to prevent an accident by easily detecting short or disconnection of each LED(Light Emitting Diode) of the beacon in a remote monitoring system. A control system of a beacon includes a power unit(90), a lighting unit(30), a driving unit(40), a current detecting unit(20), and a central processing unit(10). The power unit is composed of a storage battery of photovoltaic generation equipment, and the like. The lighting unit is composed of a plurality of high brightness LEDs. The driving unit drives the lighting unit to emit light always at over predetermined luminosity. The current detecting unit detects driving current of the lighting unit. The central processing unit detects the current through the current detecting unit to determine short or disconnection of the LED of the lighting unit.

Description

Control system of equalizer {CONTROL SYSTEM OF BEACON}

1 is a schematic block diagram of an equalizer control system according to an embodiment of the present invention;

Figure 2 is a schematic block diagram for operation monitoring in the equalizer control system according to an embodiment of the present invention,

3 is a graph of the output voltage according to the detection intensity in the equalizer control system according to an embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

10: central processing unit 20: current detection unit

22: drive current detection unit 25: A / D converter

30: light register 31: the first LED module

32: second LED module 33: N LED module

40: drive unit 41: first drive unit

42: second driver 43: N-th driver

45: signal multiplexer 50: memory

60: communication unit 70: light detection unit

80: amplification section 90: power supply section

The present invention relates to a control system of an equalizer, and more particularly, the power supply of the power supply unit for driving the equalizer configured to always emit light above a certain reference brightness does not change the brightness of the light amplifier. Accordingly, the present invention relates to a control system of an equalizer for controlling the respective driving units of the equalizer in a pulse width modulation method so that the luminance can always be displayed above the reference luminance so as to always perform the role of the equalizer with reliability.

In general, a lighthouse is a sign of a route, which is set up in the form of a tower or the like on a beach or an island to illuminate a ship at night to illuminate a target, a seaway, a dangerous place, etc. Indicate the location, perspective, and danger of land on the vessel or aircraft. Nautical lighthouses are installed at islands, capes, reefs, rivers, and port entrances.They are built in a tower shape for easy detection during the day, and air obstacles are installed near mountain tops and pylon airports near air routes. It is large and can be used for navigation.

The illuminator has a light source therein, and is composed of a Fresnel lens unit for converting light emitted from the light source to pass near the parallel light after passing through the lens. At present, among the various lamps installed in Korea, a lamp with a diameter of 250 mm in the middle region occupies about 74% of the coastal marker, and the remainder is 300 mm.

The bulb-type lamp using the incandescent bulb as described above uses a mechanical structure called a bulb exchanger to rotationally drive a socket member in which a plurality of incandescent bulbs are installed, and when the incandescent bulb in operation is broken, a motor installed in the bulb exchanger is spared. It is configured to automatically switch to the bulb.

However, such an electric light bulb requires frequent checks and maintenance of the power supply unit due to inefficient use of the power supply, and has a disadvantage of requiring frequent checks on the manager side due to the shortening of the endurance of the battery.

Accordingly, in recent years, an illuminator using an LED (light-emitting diode) having higher luminance than an incandescent lamp has been developed and used. In this LED lamp, a plurality of LED modules emitting light are stacked on the top of the lamp body, and each LED module is designed such that the control module is electrically connected to a power supply and operated by a power supplied from a battery. .

On the other hand, the power supply for driving the LED brightener, may use a solar cell. In such a photovoltaic power generation using a solar cell, the current flow generated by the photovoltaic effect causes the current to flow to an external load connected to the solar cell to operate the external load.

However, when the solar cell receives the solar light due to its low efficiency in the solar cell module, only about 20% of the solar energy is converted into electricity. Therefore, most photovoltaic facilities use several of these solar cell modules in combination. In addition, on days and nights where sunlight does not shine due to rain or snow or clouds, electricity is not generated and a non-uniform direct current is generated according to the intensity of solar radiation. Therefore, a general photovoltaic power generation system has a solar cell array in which a plurality of solar cell modules are connected in series and in parallel in order to supply sufficient electricity, a storage battery for storing power, a voltage regulator for regulating a constant voltage intensity, or It consists of a DC-DC converter.

However, since the output voltage is not constant according to the state of charge and the ambient temperature of the storage battery charged with such a photovoltaic power generation facility, the light intensity of the light is more than the reference light in the fully charged state, but the charge amount is not sufficient. In this case, there is a problem in that the brightness of the equalizer falls below the standard, thereby preventing the function of the equalizer.

The present invention is to solve the above problems, an object of the present invention is to detect the brightness of the light fixture, and to control each drive unit of the light fixture in a pulse width modulation method according to the detected light intensity of the power supply charging It is to provide a control system of the equalizer that can minimize the impact on the state and always exhibit a brightness above the reference brightness. In other words, the luminance of the equalizer is compared with the reference luminance. When the luminance of the equalizer is greater than or equal to the reference luminance, the width of the driving waveform is narrowed. If the luminance of the equalizer is less than or equal to the reference luminance, the width of the driving waveform is widened. It is to provide a control system of the light fixture to enable the brightness.

In addition, the present invention is to provide a control system of the brighter is easy to maintain and scan the LED array formed of a plurality of modules at predetermined time intervals to easily and quickly detect the short circuit or disconnection of a specific LED module, etc. .

The present invention is provided with a power supply unit consisting of a plurality of high-brightness LED in order to receive the operating power from a power supply unit consisting of a battery such as a photovoltaic power generation facility to always emit light above a predetermined reference brightness, the power supply from the power supply unit 90 The driving unit 40 for emitting light to the light emitting unit 30 above the reference brightness, a current detecting unit 20 for detecting a driving current of the light emitting unit 30, and the current detecting unit 20 It is characterized in that it comprises a central processing unit 10 for detecting the current through the short circuit or disconnection state of the LED constituting the lighting unit 30.

At this time, the lighting unit 30 is composed of a plurality of LED modules, each LED module has a plurality of LEDs to form one module, the drive unit 40, the formed first LED module (31) to The first driving unit 41 to the N-th driving unit 43 for driving each module of the N-th LED module 33 is configured, and the power supply of the first driving unit 41 to the N-th driving unit 43 is Receiving a control signal of the central processing unit 10 includes a signal multiplexer 45 for supplying the operating power of the power supply unit 90 from the first drive unit 41 to the N-th drive unit 43 in a scan method It is preferable to be configured.

In addition, the present invention further includes a light intensity detection unit 70 for detecting the light intensity of the light emitting unit 30 to provide to the central processing unit 10, the central processing unit 10, the light intensity detection unit 70 Receiving an output signal and outputting a control signal to the drive unit 40 in a pulse width conversion (PWM) method so that the average value for a predetermined time to maintain the reference brightness so that the brightener 30 always emits light above the reference brightness It is characterized by performing a function.

At this time, the storage device 50 for storing in advance the information of the reference brightness and the operation order of the lighting unit 30 in the central processing unit 10, and the operating state of the lighting unit 30 from the central processing unit 10 It is preferably configured to further include a communication unit 60 for receiving the transmission to the outside.

Hereinafter, with reference to the accompanying drawings will be described in detail the control system of the lighting device of the present invention.

1 is a schematic block diagram of the equalizer control system according to an embodiment of the present invention, Figure 2 is a schematic block diagram for operation monitoring in the equalizer control system according to an embodiment of the present invention, 3 is a graph of the output voltage according to the detection intensity in the brightener control system according to an embodiment of the present invention.

As shown in FIGS. 1 to 3, the control system of the lighting device according to the preferred embodiment of the present invention includes a lighting unit 30 composed of a plurality of high brightness LEDs for emitting light, and the lighting unit 30. The driving unit 40 for emitting light above the reference brightness, the power supply unit 90 for supplying the operating power to drive the drive unit 40, the current detection unit for detecting the drive current of the lighting unit 30 ( 20) and the current detecting unit 20 detects a short circuit or a disconnection state of the lighting unit 30 and outputs a control signal such that the lighting unit 30 is driven beyond the reference light intensity through the driving unit 40. A central processing unit (10), a storage device (50) which stores in advance the information of reference brightness and the operation order of the clearing unit (30) in the central processing unit (10), and from the central processing unit (10) Receiving operation state of the light register 30 to send to the outside It is configured to include a communication unit 60.

In addition, it is preferable to further include a light detector (70) for detecting the light intensity of the light emitting unit 30 to provide to the central processing unit (10). That is, it is detected whether or not the light emitting unit 30 emits light above the reference brightness and provides the central processing unit 10.

As shown in FIG. 2, the lighting unit 30 includes a plurality of high-brightness LEDs (LEDs) including a plurality of modules, and each module includes a plurality of LEDs as one module. . In addition, the module may be composed of a green LED module, a red LED module or a yellow LED module. On the other hand, the first LED module 31 to the N-th LED module 33 constituting the lighting unit 30 is configured with a first driving unit 41 to the N-th driving unit 43 for driving each module, respectively. Operating power is supplied to turn on or blink each LED module 31 to 33.

The power supply unit 90 is preferably composed of a storage battery for charging and supplying electrical energy from a photovoltaic power generation facility. In this case, the photovoltaic power generation equipment includes a solar cell array in which a plurality of solar cell modules are connected in series and in parallel in order to supply sufficient electricity, a storage battery for storing electric power, a voltage regulator for uniformly adjusting the intensity of voltage, or It consists of a DC-DC converter.

Power of the power supply unit 90 is supplied to the driving unit 40 according to the control signal of the central processing unit 10 to turn on or flash the lighting unit 30. In other words, as shown in FIG. 2, the operating signal is supplied from the first driving unit 41 to the Nth driving unit 43 in a scan manner through the signal multiplexer 45. Of course, the time intervals of the power supply to be supplied should be supplied at a time interval that is not enough to recognize the blink in human eyes.

The current detecting unit 20 may include a driving current detecting unit 22 detecting a driving current of the first driving unit 41 to the N-th driving unit 43, and converting the detected driving current into a digital signal to convert the detected current into a digital signal. And an A / D converter 25 for transmitting to (10).

That is, the current detection unit 20 is for monitoring the LED state of the lighting unit 30 by the current detection, by measuring the current value of the first LED module 31 to the N-th LED module 33 to the center Transmitting to the processing unit 10, the central processing unit 10 receives the range of allowable current value from the storage device 50 in accordance with the current characteristics for each light intensity to detect the short circuit or disconnection state of the LEDs in each LED module do. At this time, the abnormality of the specific LED module detects the driving current of the specific LED module to be supplied because the operating power is supplied in a scanning method, and according to the magnitude of the detected current whether the abnormality of the specific LED module in the central processing unit 10 Will be judged.

On the other hand, the light intensity detector 70 may be configured as a general illuminance sensor, it detects the light intensity of the lighting unit 30. In general, when the power supply unit 90 is configured as a storage battery, the charged battery has an output voltage that is not constant according to its state of charge and ambient temperature, so that the brightness of the light emitting device in the fully charged state becomes greater than or equal to the reference brightness. If this is not sufficient, the amount of light decreases and the illuminator 30 operates below the reference brightness. Therefore, the light detector 70 detects the light intensity and outputs the light intensity to the central processing unit 10. At this time, it is preferable that the output signal of the light detector 70 is amplified by flattening the waveform so that the amplifier 80 has a proper time constant, and then converts it through the digital converter and outputs it to the amplification processor 10. Therefore, the central processing unit 10 receives the output signal of the light detector 70 and outputs a control signal to the driver 40 in a pulse width conversion manner so that the average value for a predetermined time maintains the reference brightness. The instrument 30 always emits light above the reference luminance.

The control system of the brightness machine according to the present invention configured as described above, as a function of light intensity monitoring, the light intensity of the light emitting unit 30 is detected by the light intensity detecting unit 70. The detected luminous intensity signal is amplified by the amplifier 80 and provided to the central processing unit 10. The luminous intensity signal of the luminous intensity detector 70 changes according to the state of charge of the power supply unit 90. Even in a fully charged state, the storage battery does not have a constant output voltage according to the ambient temperature. Therefore, the brightness of the illuminator is less than or equal to the reference brightness even in the state of being near full charge. In this case, the light detector 70 detects the light intensity, flattens the waveform to have an appropriate time constant, amplifies it, converts it through a digital converter, and outputs it to the driving unit 40 through the amplification processor 10. Therefore, the central processing unit 10 receives the output signal of the light detector 70 and outputs a control signal to the driver 40 in a pulse width conversion (PWM) manner so that the averaged value for a predetermined time maintains the reference brightness. Thus, the illuminator 30 always emits light above the reference luminance. In other words, as shown in FIG. 3, when the brightness of the equalizer is greater than or equal to the reference brightness, the width of the driving waveform is narrowed. When the brightness of the equalizer is less than or equal to the reference brightness, the width of the driving waveform is broadly converted. The control signal is output to 40 so that the lighting unit 30 can always exhibit sufficient brightness.

On the other hand, the current detector 20 is for monitoring the LED state of the lighting unit 30, the central processing unit 10 by measuring the current value of the first LED module 31 to the N-th LED module 33 The central processing unit 10 receives the range of allowable current values from the storage device 50 according to the current characteristics for each light intensity and detects a short circuit or a disconnection state of the LEDs in each LED module.

Therefore, it is possible to easily monitor the operation state of the equalizer through the current detector 20 at a long distance, greatly improve the reliability of the equalizer, it is possible to effectively prevent safety accidents at sea.

As described above, according to the present invention, when the brightness of the equalizer is compared with the reference brightness, the width of the driving waveform is narrowed when the brightness of the equalizer is greater than or equal to the reference brightness, and when the brightness of the equalizer is less than the reference brightness, the driving waveform is smaller. It widens the width so that sufficient brightness can be exhibited and the brightness is always operated above the reference brightness, which greatly improves the reliability of the product.

In addition, it is easy to detect whether there is a short circuit or disconnection of each LED constituting the lamp and easily detect it in the remote monitoring system through the communication unit, so that the maintenance of the lamp is made convenient to prevent safety accidents at sea. You can contribute greatly to.

Claims (4)

In the light register including a lamp unit consisting of a plurality of high-brightness LED in order to always receive the operating power from a power supply unit consisting of a battery such as a solar power generation equipment to emit more than a constant reference brightness, A driving unit 40 for receiving power from the power supply unit 90 to emit light above the brightness of the lighting unit 30, and a current detecting unit 20 for detecting a driving current of the lighting unit 30; And a central processing unit 10 which detects a current through the current detecting unit 20 and detects a short circuit or a disconnection state of the LEDs constituting the lighting unit 30. . The method of claim 1, The lighting unit 30 is composed of a plurality of LED modules, each LED module has a plurality of LEDs to form one module, The driving unit 40 includes first driving units 41 to N-th driving units 43 for driving respective modules of the formed first LED modules 31 to N-th LED modules 33. Power supply of the first driving unit 41 to the N-th driving unit 43 is controlled by the central processing unit 10 to scan the operating power of the power supply unit 90 from the first driving unit 41 by scanning. Control system of the brighter, characterized in that it comprises a signal multiplexer (45) for supplying to the N-th drive unit (43). The method according to claim 1 or 2, Further comprising a light detector 70 for detecting the light intensity of the light emitting unit 30 to provide to the central processing unit 10, The central processing unit 10 receives the output signal of the light intensity detecting unit 70 and outputs a control signal to the driving unit 40 in a pulse width conversion (PWM) manner so that a value averaged for a predetermined time maintains a reference intensity. So that the brightener 30 always performs a function to emit light above the reference brightness. The method of claim 3, A storage device 50 which stores in advance the information on the reference brightness and the operation order of the lighting unit 30 in the central processing unit 10, and the operating state of the lighting unit 30 from the central processing unit 10; The control system of the brighter, characterized in that it further comprises a communication unit 60 for receiving and transmitting to the outside.

Images