JP6460216B1 - High intensity aviation obstruction light flash drive device - Google Patents

Abstract

A light emission driving device for an aviation obstruction lamp capable of supporting a wide range of light intensity flashes of 200,000 cd to 2,000 cd and capable of providing continuous light when flashing as a high intensity aviation obstruction lamp at low light intensity.
A high luminous intensity for driving an LED based on a trigger signal for instructing a flash sent from a controller and a luminous intensity switching signal for switching the luminous intensity according to a daytime mode, a twilight mode, and a nighttime mode. This is a flash drive device for aviation obstruction lights, and in the daytime mode and twilight mode based on the trigger signal, one flash is emitted at a cycle of 1 to 1.5 seconds at least once in a flash period within a specified period of 100 to 250 msec. A flash control circuit 26 for generating a second flash signal having a PWM waveform for the flash period of the first flash signal in the night mode, and a flash control circuit The LED driving circuit 27 for driving the LED by the first flash signal or the second flash signal is provided.
[Selection] Figure 1

Description

  The present invention relates to a flash drive device for a high-luminance aviation obstacle light that uses a controller to control a plurality of aviation obstacle lights that indicate the presence in the daytime, twilight, and nighttime of a building or the like that interferes with a flying aircraft.

  Conventionally, in order to indicate the existence of high-rise structures and the like (excluding high-rise buildings) that interfere with flying aircraft in the daytime, twilight, and nighttime, a light emission driving device for an aviation obstacle light has been used. For example, Patent Literatures 1 and 2 are known as conventional aviation obstacle light emission driving devices.

  The LED dimming device described in Patent Document 1 includes a current adjusting means (constant current circuit) that variably controls the magnitude of a current flowing through an LED load, and a switch means (transistor) that controls intermittently the current flowing through the LED load. And a dimming control peripheral unit that receives the dimming signal output from the dimmer and controls the current adjusting unit and the switch unit. This device performs dimming by continuously supplying current to the LED load.

  As a result, when the dimming signal is on the high light intensity side, the current flowing through the LED load is a continuous current, and the LED load is dimmed according to the magnitude of the flowing current, and when the dimming signal is on the low luminance side, the current flows through the LED load. Dimming is performed by making the current into a pulse and changing the pulse duty ratio.

  The LED lighting device described in Patent Document 2 simultaneously adjusts a plurality of types of LEDs having different color temperatures, a lighting circuit that lights each of the plurality of LEDs, an LED lighting circuit that lights each of the types of LEDs, and the plurality of types of LEDs. In the depth control area where the dimming degree is 20% or less, which controls the LED lighting circuit so that the light can be lit, the dimming control of a plurality of types of LEDs is performed by pulse width control. Control means for dimming control of a plurality of types of LEDs by control is provided.

JP 2011-108669 A JP2015-43326A

  However, the light control device according to Patent Document 1 is a device that controls continuous light, and is not suitable for a device that flashes in a cycle of 1 to 1.5 seconds, such as a high-luminance aviation obstacle light. Further, in order to apply Patent Document 1 to an aviation obstacle light, it is made to flash in a cycle of 1 to 1.5 seconds based on the specification of the high-luminance Aviation Bureau aviation obstacle light, and daytime (200,000 cd), twilight. (20,000 cd) and nighttime (2,000 cd) dimming must be possible. Although it can be applied to this dimming, it is not described whether flashing is possible. That is, a method that can deal with flashing is not disclosed.

  Moreover, although it is dimming as a PWM waveform at the time of low light intensity, it is necessary to make continuous light at the time of flashing as a high light intensity aviation trouble lamp, but the method of making continuous light is not disclosed in the cited document 1.

  Similarly to Patent Document 1, Patent Document 2 is applicable to dimming, but does not describe whether flashing can be performed. That is, a method that can deal with flashing is not disclosed. Furthermore, although it is dimming as a PWM waveform at the time of low light intensity, it is necessary to make continuous light at the time of flashing as a high light intensity aviation trouble lamp, but Patent Document 2 does not disclose a method of making continuous light.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a light emission driving device for an aviation obstacle light that can cope with a flash and can be made a continuous light at the time of a flash as a high intensity aviation obstacle light at a low light intensity.

  In order to solve the above-described problems, a flash drive device for a high-luminance aviation obstruction light according to the present invention corresponds to a trigger signal for instructing a flash light transmitted from a controller and a daytime mode, a twilight mode, and a nighttime mode. A flash driving device for a high-luminance aviation obstruction light that flashes an LED based on a luminous intensity switching signal for switching the luminous intensity, with a cycle of 1 to 1.5 seconds in the daytime mode and twilight mode based on the trigger signal A first flash signal is generated to make one flash into a continuous light in which one or more flashes are overlapped in a flash period within a specified period of 100 to 250 msec, and the flash period of the first flash signal is generated in the night mode. A flash control circuit for generating a second flash signal having a PWM waveform, and an LED drive circuit for driving the LED by the first flash signal or the second flash signal from the flash control circuit; Characterized in that it comprises.

  According to the present invention, in the daytime mode and the twilight mode, one flash is made into a continuous light in which one or more flashes are superimposed in a flash period within a specified period of 100 to 250 msec in a cycle of 1 to 1.5 seconds. The LED is driven by the first flash signal, and in the night mode, the LED is driven by the second flash signal in which the flash period of the first flash signal is a PWM waveform. It can be a continuous light when flashing as a lamp.

1 is a configuration diagram of a flash drive device for a high-luminance aviation obstruction lamp according to Embodiment 1 of the present invention. FIG. It is a block diagram of the configuration of each flash device power supply unit of the flash drive device for the high-luminance aviation obstruction lamp according to Embodiment 1 of the present invention. It is a timing chart which shows the flash current waveform of the daytime, twilight, and nighttime of the flash drive device of the high-luminance aviation obstruction lamp according to Embodiment 1 of the present invention. It is a timing chart which shows the 1st specific example of the nighttime flash current waveform of the flash drive device of the high intensity | strength aerial obstruction lamp which concerns on Example 1 of this invention. It is a timing chart which shows the 2nd specific example of the nighttime flash current waveform of the flash drive device of the high intensity | strength aerial obstruction lamp which concerns on Example 1 of this invention. It is a timing chart which shows the 3rd specific example of the flash current waveform of the nighttime of the flash drive device of the high intensity | strength aerial obstruction lamp which concerns on Example 1 of this invention.

  Hereinafter, a flash drive device for a high-luminance aviation obstacle light according to an embodiment of the present invention will be described in detail with reference to the drawings.

  First, an outline of a flash drive device for a high-luminance aviation obstacle light according to an embodiment of the present invention will be described. The flash drive device for high-luminance aviation obstruction lights is based on the specifications for high-luminance aviation aviation obstruction lights, and it is a continuous light that emits one flash over 100-250 msec at 1 to 1.5 second intervals. Set to.

  In the low light intensity mode at night, the light is dimmed as a pulse waveform, but it is not simply an on / off control, and the PWM frequency is varied by making the necessary off period constant so that a continuous light can be seen as one light during flashing.

  Alternatively, as another method, a base current is passed during the flash period so that the PWM current during flash is sustained. Hereinafter, the light emission driving device for the high-luminance aviation obstacle light will be described in detail by way of examples.

Example 1
The flash drive device for an aviation obstacle light is applied to a high intensity aviation obstacle light. FIG. 1 is a configuration diagram of a flash drive device for a high intensity aviation obstacle light according to Embodiment 1 of the present invention. The flash drive device of the aviation obstacle light is provided in a high-rise structure or the like that becomes an obstacle of the aircraft. For example, four flash device light emitting units 1-1 to 1-4 and four flash device light emitting units 1 are provided. Four flash device power supply units 2-1 to 2-4 connected to -1 to 1-4, control lines 3-1 to 3-4, 4-1 to 4-4, and power supply lines 5-1 to 5 -4, branch relay box 6-1 connected to the four flash device power supply units 2-1 to 2-4, branch relay via control lines 7-1 and 8-1 and power supply line 9-1 A branch relay box 6-2 connected to the box 6-1.

  The four flash device light emitting units 1-1 to 1-4 and the four flash device power supply units 2-1 to 2-4 constitute four flash devices and are arranged in four directions at the same height. Each flash device corresponds to the flash drive device of the present invention.

  Also, the flash drive device for the high-luminance aviation obstruction light was connected to the four flash device light emitting units 1-5 to 1-8 and the four flash device light emitting units 1-5 to 1-8 via connection lines. Four flash devices via four flash device power supplies 2-5 to 2-8, control lines 3-5 to 3-8, 4-5 to 4-8, and power wires 5-5 to 5-8 Branch relay box 6-2 connected to power supply units 2-5 to 2-8, and control connected to branch relay box 6-2 via control lines 7-1 and 8-1 and power supply line 9-1. And an ambient illuminance detector 11 connected to the controller 10.

  The four flash device light emitting units 1-5 to 1-8 and the four flash device power supply units 2-5 to 2-8 constitute four flash devices and are arranged in four directions at the same height. The flash device light emitting units 1-1 to 1-4 and the four flash device power source units 2-1 to 2-4 are arranged at different heights.

  In this example, eight flash devices are illustrated, but the number of flash devices is not limited to eight.

  A power line 9-1 from the controller 10 is connected to power lines 5-1 to 5-8 via branch relay boxes 6-1 and 6-2. The control line 7-1 from the controller 10 is connected to the control lines 3-1 to 3-8 via the branch relay boxes 6-1 and 6-2, and the control line 8-1 from the controller 10 is branched. It is connected to control lines 4-1 to 4-8 through boxes 6-1 and 6-2. The control lines 7-1 and 3-1 to 3-8 are signal lines for transmitting a trigger signal and a light intensity switching signal for instructing flashing of the flashing device from the controller 10 to each flashing device. The control lines 8-1, 4-1 to 4-8 are a pair of signal lines for the controller 10 to receive return signals from the respective flash devices.

  FIG. 2 is a configuration block diagram of each flash device of the high-luminance aviation obstacle light system according to Embodiment 1 of the present invention. Each flash device includes a flash device light emitting unit 1 (1-1 to 1-8) and a flash device power source unit 2 (2-1 to 2-8) that drives the flash device light emitting unit 1. The flash device power supply unit 2 is connected to a flash device light emitting unit 1 (1-1 to 1-8) in which a plurality of LEDs are connected in series.

  Each flash device power supply unit 2 includes a switch 21, a transformer 22, a DC power supply circuit 23, a switch unit 24, a current detection unit 25, a flash control circuit 26, an LED drive circuit 27, a current detection circuit 28, a time division flash circuit 29, a voltage. A detection circuit 30 is provided. The transformer 22 may not be provided.

  When the switch 21 is turned on, an AC voltage of 200 V is supplied from the power supply line 5 (5-1 to 5-8) to the primary winding of the transformer 22. The DC power supply circuit 23 converts an AC voltage from the secondary winding of the transformer 22 into a DC voltage, and converts the DC voltage into a series circuit including a flash device light emitting unit 1 composed of LEDs, a switch unit 24, and a current detection unit 25. Supply.

  The flash control circuit 26 outputs a trigger signal input from the controller 10 to the LED drive circuit 27 and the time division flash circuit 29. Further, the flash control circuit 26 outputs a light intensity switching signal inputted from the controller 10 for performing light intensity switching in three stages of daytime (200,000 cd), twilight (20,000 cd), and nighttime (2,000 cd). Output to the drive circuit 27.

  The LED drive circuit 27 drives the flash device light emitting unit 1 composed of LEDs by turning on and off the switch unit 24 at a high frequency and at a constant cycle by a trigger signal from the flash control circuit 26. The switch unit 24 is connected in series to the flash device light emitting unit 1 and includes a switching element Q1 formed of a MOSFET and a diode D1 connected in parallel thereto. The switching element Q1 may be an insulated bipolar transistor or the like.

  The current detection unit 25 is connected in series to the switch unit 24 and includes, for example, a current detection resistor or a Hall element. The current detection circuit 28 detects a current flowing through the current detection resistor and the Hall element, that is, a current flowing through the flash device light emitting unit 1, and determines whether or not the detected energization current is within a specified current value. When the energization current is within the specified current value, the energization current is output to the time division flash circuit 29.

  The time division flash circuit 29 calculates the logical product of the current signal detected by the current detection circuit 28 and the trigger signal from the flash control circuit 26, and outputs the logical product for the delay time set for each flash device. The delayed return signal is output to the control lines 4-1 to 4-8. Therefore, by taking the logical sum of the control lines 4-1 to 4-8, the return signal ds shown in FIG. 5 or 6 is generated in the control line 8-11 in a time-sharing manner for each flash device. The

  The voltage detection circuit 30 is connected to a connection point between the switch unit 24 and the flash device light-emitting unit 1 and detects whether or not the flash device light-emitting unit 1 including a plurality of LEDs connected in series has an open failure. Then, the presence / absence information of the open failure is output to the time division flash circuit 29. The time-division flash circuit 29 outputs to the controller 10 the presence / absence information of an open failure from the voltage detection circuit 30 that detects an open failure when the LED drive voltage is equal to or higher than a specified voltage. The voltage detection circuit 30 detects a short circuit failure when the LED drive voltage becomes less than a specified voltage.

  The controller 10 compares the return signal composed of each flash signal sent from each flash device via the control lines 4-1 to 4-8 to the control line 8-1 in a time-sharing manner with the trigger signal. It is determined whether the flash device is flashing synchronously.

  When the controller 10 receives a return signal at a timing obtained by adding the delay time set for each flash device to the trigger signal, the controller 10 determines that each flash device is flashing synchronously, If no return signal is received at the timing and not received at a different timing, it is determined that the flash device has stopped flashing, and if a return signal is received at a timing different from the predetermined timing, It is determined that some flash devices are flashing asynchronously.

  Further, in the flash drive device, a plurality of flash devices flash in synchronization with the trigger signal in accordance with the trigger signal and the light intensity switching signal from the controller 10, and in the daytime (200,000 cd) by the light intensity switching signal. The light intensity is switched in three stages: (20,000 cd) and night (2,000 cd).

  Based on the trigger signal from the controller 10, the flash control circuit 26 of the flash device generates a flash signal that makes one flash in a period of 1 to 1.5 seconds and a continuous light that is emitted at least once in 100 to 250 msec. Generate.

  The LED drive circuit 27 drives the flash device light emitting unit 1 composed of LEDs by turning on and off the switch unit 24 at a high frequency and at a constant cycle by a flash signal from the flash control circuit 26.

  When the light intensity switching signal is high light intensity (daytime and twilight (1/10 of the daylight intensity)), the flash control circuit 26 emits one flash once for 100 to 250 msec, and the absolute current during the flash Adjust the value and flash duration to adjust the light intensity.

  When the flash device has a low light intensity (nighttime: 1/100 of the daytime light intensity), the flash control circuit 26 adjusts the flash period to the current of the PWM waveform in addition to adjusting the flash period of one flash and the current during the flash. Set to.

  The flash control circuit 26 makes the PWM waveform at the time of flashing continuous light so that it can be seen as one light in the flashing period, so that the PWM off period is constant (for example, 3 mS or less, preferably 2 mS or less) so that it becomes visible light. ) To adjust the luminous intensity by changing the PWM frequency.

  Next, the operation of the light emission driving device for the high-luminance aviation obstacle light according to the embodiment configured as described above will be described. First, a trigger signal is sent from the controller 10 so that all the flash devices flash in synchronization. Further, the ambient illuminance detector 11 detects the ambient illuminance, and the controller 10 detects the ambient illuminance detected by the ambient illuminance detector 11 in the daytime (200,000 cd), twilight (20,000 cd), and nighttime (2,000). The light intensity switching signal in three stages cd) is generated, and the light intensity switching signal is sent to all the flash devices. All the flash devices simultaneously perform light intensity switching by a light intensity switching signal from the controller 10.

  The flash control circuit 26 of each flash device receives the light intensity switching signal from the controller 10 and performs flashing with a cycle of 1 to 1.5 seconds. This flash period is defined as 100 to 250 msec according to the specifications of the Aviation Bureau Aviation Obstruction Light.

  The flash control circuit 26 of each flash device performs flashing in the daytime (200,000 cd), twilight (20,000 cd), and nighttime (2,000 cd) in accordance with the light intensity switching signal from the controller 10.

  In the daytime (200,000 cd) mode, as shown in FIG. 3A, the LED current of the flash device is changed to the absolute value (for example, 2 to 3 A) of the current during flashing by the constant current circuit of the LED drive circuit 27. The light intensity is adjusted so that the optical characteristic becomes a specified value by changing the flash period (for example, 100 to 250 ms) within a specified value (100 to 250 msec).

  In the twilight (20,000 cd) mode, as shown in FIG. 3 (b), the absolute value of the current during the flash period is reduced (for example, 0.1 to 0.4 A) with respect to the LED current in the daytime mode, The flash period is shortened within a specified value (for example, 100 to 150 ms), and the optical characteristic is adjusted to a specified value.

  In the nighttime (2,000 cd) mode, the absolute value of the current during the flash period is reduced (for example, 0.1 to 0.3 A), and the flash period is shortened within a specified value (for example, 100 to 150 ms). The optical characteristics are adjusted to a specified value, and as shown in FIG. 3C, the LED current during the flashing period is subjected to PWM control (about 30 to 100 pulses) of a switching element such as an FET by the LED drive circuit 27. .

  At this time, as shown in FIG. 4, the PWM control adjusts the light intensity so that the off-period is constant (for example, 2 ms) and the PWM frequency is varied and the nighttime optical characteristics become a specified value in order to make the flashing time continuous light. I do. If the flash signal is off for a long time, it will appear to disappear intermittently. The off period is 3 ms or less.

  Further, as shown in FIG. 5, the flash control circuit 26 applies a base current (bias current) BC only during the flash period in addition to the PWM waveform during flash (for example, about 10 to 20% of the peak current), and the PWM waveform. The luminous intensity may be adjusted with. Thereby, the restriction | limiting of an OFF period can be eased.

  Further, in the night mode, the flash control circuit 26 makes the first current peak value P1 of the PWM current during the flash period larger than the second and subsequent current peak values P2, as shown in FIG. Also good. Thereby, the start of flash can be recognized by the flash photometer.

  In addition, when even one LED (LED module) of the flash device light emitting unit 1 composed of LEDs connected in series fails in the open mode, the LED drive circuit 27 performs constant current control. The LED applied voltage rises to the maximum voltage during energization for flashing. The voltage detection circuit 30 detects the abnormality of the LED when the overvoltage detection level is exceeded at this application timing, and outputs abnormality detection information to the controller 10 via the control lines 4-1 to 4-8.

  Further, even when one of the LEDs (LED module) of a large number of series LEDs fails in the open mode, the PWM voltage is controlled by the LED drive circuit 27 in the night mode, so that the LED applied voltage is suppressed and the LED applied voltage is reduced. Does not rise to the maximum voltage.

  For this reason, in the night mode, the LED current is also detected by the current detection circuit 28, LED current drop detection is performed in combination with the voltage detection, and the voltage of the voltage detection circuit 30 and the current of the current detection circuit 28 are combined. Anomaly detection can also be performed.

  Furthermore, when a LED of a large number of series LEDs (LED module, for example, 93 series) fails in the short mode, the LED drive circuit 27 turns off the short-circuited LED, which is a constant current, and flashes the remaining LEDs. continue.

  At this time, the amount of light corresponding to the short circuit decreases, so that when the number of LED shorts increases, the specified light intensity cannot be output. Therefore, when the voltage detection circuit 30 detects the number of short-circuited LED applied voltages that cannot output a specified luminous intensity, and the LED voltage becomes equal to or less than that when the LED is energized, the LED abnormality detection can be performed.

  As described above, according to the light emission driving device of the aircraft obstacle light according to the embodiment, at the daytime mode and the twilight mode, one flash is made once or more in a flash period within a specified period of 100 to 250 msec in a cycle of 1 to 1.5 seconds. Since the LED is driven by the first flash signal to make the continuous light with a continuous light emission of 1 to 1.5 seconds at a light intensity with a large difference between high light intensity (200,000 cd) and low light intensity (2000 cd) Can perform periodic flashes.

  Further, in the night mode, the LED is driven by the second flash signal in which the flash period of the first flash signal is a PWM waveform, so that the flash time can be recognized as a continuous light even in a low-light PWM waveform.

  Further, the flash optical measuring device can recognize the start of the flash period in the low-luminance PWM waveform. The frequency of the PWM waveform can be lowered as continuous light, and the loss due to the PWM frequency can be reduced. Therefore, it can cope with a flash, and can be made a continuous light at the time of flash as an aviation obstacle light at a low light intensity.

  The high-luminance aviation obstacle light switches three kinds of luminosity, but the medium-luminance aviation obstacle light switches two kinds of luminosity. Therefore, the present invention can be applied not only to the high-luminance aviation obstacle light but also to the medium-luminance aviation obstacle light. Applicable. Further, the fixed PWM off period is not limited to 3 ms or less.

1-1 to 1-8 Flash device light emitting units 2, 2-1 to 2-8 Flash device power supply units 3-1 to 3-8, 7-1 Trigger signal control lines 4-1 to 4-8, 8- 1 Return signal control line (1 pair)
5-1 to 5-8, 9-1 Power line 6-1, 6-2 Branch relay box 10 Controller 11 Ambient illuminance detector 21 Switch 22 Transformer 23 DC power supply circuit 24 Switch unit 25 Current detection unit 26 Flash control circuit 27 LED drive circuit 28 Current detection circuit 29 Time division flash circuit 30 Voltage detection circuit Q1 Switching element D1 Diode

Claims (7)

Light emission of high-intensity aviation obstruction light that causes LED to flash drive based on trigger signal for instructing flash light sent from controller and light intensity switching signal for switching light intensity according to daytime mode, twilight mode and nighttime mode A driving device comprising:
Based on the trigger signal, in the daytime mode and the twilight mode, one flash is made into a continuous light in which a light emission is repeated at least once in a flash period within a specified period of 100 to 250 msec in a cycle of 1 to 1.5 seconds. A flash control circuit for generating a first flash signal and generating a second flash signal having a PWM waveform in the flash period of the first flash signal during night mode;
An LED drive circuit for driving the LED by a first flash signal or a second flash signal from the flash control circuit;
A flash drive device for a high-luminance aviation obstacle light, comprising:   The flash control circuit reduces the absolute value of the current during the flash period in the daytime mode in the twilight mode, shortens the flash period within the specified period, and switches the flash period by the switching element in the night mode. The high-luminance aviation obstruction light flash drive device according to claim 1, wherein PWM control is performed.   The flash control circuit performs PWM control in which the off period of the flash period is set to a constant period and the PWM frequency is varied in order to make the flash time a continuous light in the night mode. 3. A flash drive device for high-luminance aviation obstruction lights according to 2.   4. The high intensity aviation obstruction lamp flash drive device according to claim 3, wherein the flash control circuit allows a base current to flow only during the flash period.   4. The flash of a high intensity aviation obstruction lamp according to claim 3, wherein the flash control circuit makes the first current of the PWM current during the flash period larger than the second and subsequent currents in the night mode. Drive device.   6. A high intensity aviation obstacle light flash drive according to claim 2, further comprising a voltage detection circuit for detecting an open of the LED when the LED drive device has a voltage higher than a specified voltage. apparatus.   6. A high intensity aviation obstacle light flash drive according to claim 2, further comprising a voltage detection circuit for detecting a short circuit of the LED when the LED driving device becomes less than a specified voltage. apparatus.

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