JP2020024818A - Aeronautical light control device - Google Patents

Abstract

To provide an aeronautical light control device in which heat evolution accompanying turning on/off control of an aeronautical light can be suppressed and a life operation number of times can be extended to improve safety, reliability, and a life.SOLUTION: A light control device 12 is housed in a completely tightly closed rubber mold frame 11. In a turning on/off circuit of an aeronautical light 1, an FET4 and an auxiliary relay 3 are provided. A current value determination unit 7, a temperature determination unit 9, and a control unit 10 are provided. The current value determination unit 7 determines whether a measured value of current flowing through the turning on/off circuit is larger or smaller than a reference value. The temperature determination unit 9 determines whether a measured temperature in the rubber mold frame 11 is higher or lower than a reference temperature. On the basis of determination results of the current value determination unit 7 and the temperature determination unit 9, the control unit 10 controls the FET 4 and the auxiliary relay 3 by performing switching over between a combination mode in which the FET 4 and the auxiliary relay 3 are used together and a single mode in which only the FET 4 is used.SELECTED DRAWING: Figure 1

Description

  An embodiment of the present invention relates to an aviation light control device that performs on / off control of aviation light.

  An airplane light control device is provided in a terminal substation installed in a field of an airport, and is used to control turning on and off the airplane light. A conventional aeronautical light control device employs a mechanism in which a mechanical switch such as an auxiliary relay is incorporated in a circuit for turning on and off an aerial light. Auxiliary relays have the advantage that they generate less heat when closed and can be completely short-circuited.

  However, the auxiliary relay has a small number of lifetime operations in current switching. At present, as LEDs are being used in lamps, there is a strong demand to extend the expected life of the entire product, and the small number of life operations is a major disadvantage. Therefore, a mechanism has been proposed in which a semiconductor switch such as a field effect transistor (hereinafter, referred to as an FET) is incorporated in a lighting / lighting circuit of an aeronautical light.

  However, the FET has a merit that the number of lifetime operations is large, but has a large resistance value when closed. For this reason, the FET has disadvantages that it generates a large amount of heat and that a current is shunted to complete a short circuit.

  In particular, when an aeronautical light control device using an FET is used outdoors, a large heat generation becomes a problem. This is because the outdoor aeronautical lighting control device is housed in a completely sealed rubber mold housing to ensure excellent waterproofness, so it is difficult to release heat from the housing and the heat dissipation of the FET is low. Because.

JP 2000-150174 A

  In the conventional aeronautical light control device, if the on / off control of the aeronautical light is performed by a semiconductor switch such as an FET, the heat generation is high, and the low heat radiation property becomes a problem especially when housed in a closed housing. ing. In addition, when a mechanical switch such as an auxiliary relay is used, it has been pointed out that the switching operation life is short.

  The present embodiment has been proposed to solve the above-mentioned problem, and it is possible to suppress heat generation due to the control of turning on and off the aviation light, and at the same time, it is possible to extend the number of lifetime operations, thereby improving safety and reliability. It is an object of the present invention to provide a lamp control device which improves the life and extends the life.

In order to achieve the above object, a lamp control device according to an embodiment of the present invention includes the following components (a) and (b).
(a) A semiconductor switch and a mechanical switch connected in parallel to a circuit for turning on and off an aircraft light.
(b) a control unit that controls the semiconductor switch and the mechanical switch by switching between a combined mode using both the semiconductor switch and the mechanical switch and a single mode using only the semiconductor switch.

FIG. 2 shows a configuration of the first embodiment. Flowchart of light-off control processing based on current value in the first embodiment Flowchart of light-off control processing based on temperature in the first embodiment Diagram showing the configuration of another embodiment

(First embodiment)
[Constitution]
Hereinafter, a first embodiment of the present invention will be specifically described with reference to FIG. As shown in FIG. 1, the light control device 12 according to the first embodiment is disposed in a terminal station in a field of an airport.

  The light control device 12 is connected to the aviation light 1 and the power supply 2, and is provided with a circuit for turning on and off the aviation light 1. As the power supply 2, a CCR or the like capable of adjusting current by thyristor switching is generally used. In the lighting / lighting circuit of the aircraft light 1, an FET 4 as a semiconductor switch and an auxiliary relay 3 as a mechanical switch are connected in parallel. The FET 4 and the auxiliary relay 3 short-circuit the circuit from the power supply 2 to the aviation light 1 and turn on / off the aviation light 1 by controlling the power supply.

  Further, a current measuring unit 6 for measuring a current value to the aviation light 1 via the CT 5 is connected to the lighting / light-off circuit of the aviation light 1. The current measuring section 6 is connected to a current value judging section 7. The current value determining unit 7 determines the magnitude of the current value measured by the current measuring unit 6 and a preset reference value. The reference value of the current can be appropriately selected, such as 5 A.

  The light control device 12 is housed in a completely sealed rubber mold housing 11. A temperature measurement unit 8 that measures the temperature inside the rubber mold housing 11 is installed in the rubber mold housing 11. The temperature measuring unit 8 is connected to a temperature determining unit 9. The temperature determining unit 9 determines the magnitude of the measured temperature measured by the temperature measuring unit 8 and a preset reference temperature. The reference temperature can be freely selected.

  A control unit 10 is connected to the current value judgment unit 7 and the temperature judgment unit 9. The control unit 10 controls the FET 4 and the auxiliary relay 3 by switching between a combined mode using both the FET 4 and the auxiliary relay 3 and a single mode using only the FET 4.

  When the determination result of the current value determination unit 7 satisfies the relationship of current value ≧ reference value or the determination result of the temperature determination unit 9 satisfies the measurement temperature ≧ set temperature, the control unit 10 enters the combined mode, and sets the FET 4 and the auxiliary relay 3. To output a control command. When the determination result of the current value determination unit 7 satisfies the current value <reference value, or when the determination result of the temperature determination unit 9 satisfies the measurement temperature <set temperature, the control unit 10 enters the single mode. Outputs control commands.

  Further, the control unit 10 controls the FET 4 to be closed first, and then the auxiliary relay 3 to be closed in the combined mode when the circuit for turning on and off the aircraft light 1 is closed. Further, in the combined mode when the circuit for turning on and off the aircraft light 1 is opened, the control unit 10 controls the auxiliary relay 3 to be opened first, and then the FET 4 to be opened.

(Action)
In the first embodiment, the following turn-off control processing is performed based on the current value in the lighting / turn-off circuit of the aviation light 1 or the temperature in the housing 11. First, a light-off control process based on a current value will be described with reference to the flowchart in FIG.

  In ST01, the power supply 2 is ON, and in ST02, the control unit 10 is in the single mode in which the control command is output only to the FET 4, the FET 4 is ON, and the auxiliary relay 3 is OFF. The FET 4 in the ON state short-circuits the circuit from the power supply 2 to the aviation light 1 and turns off the aviation light 1. In ST03, the CT 5 and the current measuring unit 6 measure the value of the current flowing in the lighting circuit.

  In ST04, current value determining section 7 determines the magnitude of the current value measured by current measuring section 6 and a preset reference value, and when measured current value ≧ reference value (YES in ST04), control section 10 determines the current value. Switches the single mode to the combined mode, and outputs a control command to the auxiliary relay 3. That is, when the measured current value ≧ the reference value, the control unit 10 switches the auxiliary relay 3 from the OFF state to the ON state (ST05).

  When the auxiliary relay 3 is turned ON, the circuit from the power supply 2 to the aviation light 1 is short-circuited. Therefore, the light-off control is completed while suppressing the rise in the value of the current flowing through the FET 4 (ST06). If the determination result of the current value determination unit 7 is the measured current value <the reference value (NO in ST04), the control unit 10 maintains the single mode, only the FET 4 remains ON, and the light-off control is completed. (ST06).

  Next, a light-off control process based on the temperature in the housing will be described with reference to the flowchart in FIG. In ST11, the power supply 2 is ON, and in ST12, the control unit 10 is in the single mode of outputting a control command to only the FET 4, the FET 4 is ON, and the auxiliary relay 3 is OFF. The FET 4 in the ON state short-circuits the circuit from the power supply 2 to the aviation light 1 and turns off the aviation light 1. In ST13, the temperature measurement section 8 measures the temperature inside the rubber mold housing 11.

  In ST14, the temperature determination section 9 determines the magnitude of the temperature measured by the temperature measurement section 8 and a preset reference temperature, and when the measured temperature ≥ the reference temperature (YES in ST14), the control section 10 sets the single mode. Is switched to the combined mode, and a control command is output to the auxiliary relay 3. That is, when the measured temperature ≥ the reference temperature, the auxiliary relay 3 is changed from the OFF state to the ON state by the control unit 10 (ST15).

  When the auxiliary relay 3 is turned on, the circuit from the power supply 2 to the aviation light 1 is short-circuited. Therefore, the turning-off control is completed while suppressing an increase in the value of the current flowing through the FET 4 (ST16). If the determination result of the temperature determination unit 9 is the measured temperature <the reference temperature (NO in ST14), the control unit 10 maintains the single mode, and the light-off control is completed while only the FET 4 remains ON (ST16). .

(effect)
As described above, in the first embodiment, the FET 4 and the auxiliary relay 3 are provided in the lighting and extinguishing circuit of the aviation light 1, and the control unit 10 uses only the FET 4 and the auxiliary relay 3 in the combined mode. The FET 4 and the auxiliary relay 3 are controlled by switching to the single mode. Therefore, in the first embodiment, the opportunity to use the auxiliary relay 3 having a small number of life operations can be reduced by performing the single mode using only the FET 4 having a long life operation number. Therefore, the use of the auxiliary relay 3 can be limited, and it is possible to contribute to prolonging the life of the entire product.

  Further, in the control unit 10, in the single mode, when only the FET 4 is energized, the current value flowing through the lighting / lighting circuit of the aviation light 1 is smaller than the reference value. Further, the measured temperature inside the rubber mold housing 11 is also lower than the set temperature. Therefore, even if the light control device 12 is housed in the rubber mold housing 11, there is no fear that heat generation of the FET 4 causes a serious problem. Therefore, the light control device 12 can ensure excellent safety and reliability.

  Further, in the first embodiment, when the current value ≧ the reference value or the measured temperature ≧ the set temperature, and the possibility that heat generation of the FET 4 becomes a problem increases, the control unit 10 uses only the FET 4. The mode is switched from the single mode to the combined mode using the FET 4 and the auxiliary relay 3 together. Therefore, not only the FET 4 but also the auxiliary relay 3 is turned ON, and the rise of the current flowing through the FET 4 can be suppressed by the amount of the ON of the auxiliary relay 3. Thereby, it is possible to suppress heat generation of the FET 4.

  Therefore, even when the light control device 12 is housed in the rubber mold housing 11, the light control device 12 does not generate heat, and excellent safety and reliability can be secured. According to such a light control device 12, even if the FET 4 is incorporated in the rubber molded case 11, the low heat radiation of the rubber molded case 11 does not cause any problem. Optimal.

  In the first embodiment, when the control unit 10 is in the combined mode, the FET 4 is operated before the auxiliary relay 3 at the time of closing operation, that is, at the time of controlling the turning off of the aviation light 1, and at the time of opening operation, that is, when the aviation light 1 is turned off. At the time of lighting control, on the contrary, the FET 4 is operated after the auxiliary relay 3. Therefore, the FET 4 can effectively exhibit good switching operation performance.

(Other embodiments)
The embodiment described above is presented as an example of the embodiment of the present invention, and is not intended to limit the scope of the invention. The embodiment of the present invention can be implemented in other various forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and their equivalents.

  For example, airline light monitoring and control systems employ power line carrier communication. The power line carrier signal usually contains information on the value of the current flowing through the lighting / lighting circuit of the aviation light 1. Therefore, the control unit 10 may receive the current value information and switch between the combined mode and the single mode based on the current value information (see FIG. 4).

  According to this embodiment, since the control unit 10 can switch between the combined mode and the single mode based on the information on the current value included in the power line carrier signal, the current measurement unit 6 and the current value determination unit 7 are omitted. The configuration can be simplified. As a result, the aeronautical light control device that houses the rubber mold housing 11 can be made more compact.

  In the first embodiment, in the combined mode, the FET 4 is operated before the auxiliary relay 3 during the closing operation, and the FET 4 is operated after the auxiliary relay 3 during the opening operation. However, the operation timing of the auxiliary relay 3 and the FET 4 can be appropriately changed. The semiconductor switch may be other than the FET 4, and the mechanical switch may be other than the auxiliary relay.

1 ... Aviation lights 2 ... Power supply 3 ... Auxiliary relay 4 ... FET
5 ... CT
6 Current measuring unit 7 Current value judging unit 8 Temperature measuring unit 9 Temperature judging unit 10 Control unit 11 Rubber mold casing 12 Aviation light control device

Claims (9)

A semiconductor switch and a mechanical switch connected in parallel with the lighting circuit of the aeronautical light;
An aeronautical light control device comprising: a control unit that switches between a combined mode using both the semiconductor switch and the mechanical switch and a single mode using only the semiconductor switch to control the semiconductor switch and the mechanical switch. . A current value determining unit that determines the magnitude of a current value flowing through the lighting / lighting circuit of the aeronautical light and a preset reference value,
The control unit includes:
When the determination result of the current value determination unit is the current value ≧ the reference value, the combination mode is set,
2. The aviation light control device according to claim 1, wherein the single mode is set when a determination result of the current value determination section satisfies the current value <the reference value.   The aeronautical light control device according to claim 2, further comprising a current measuring unit that measures a current value in the aeronautical light on / off circuit.   3. The control unit according to claim 2, wherein the control unit receives a power line carrier signal including information on a current value flowing in the lighting / lighting circuit of the aircraft light, and switches between the combined mode and the single mode based on the information on the current value. 4. Aviation light control device. An aviation light control device housed in a sealed housing,
A temperature measurement unit that measures the temperature inside the housing,
A temperature determination unit that determines the magnitude of the measured temperature measured by the temperature measurement unit and a preset reference temperature,
The control unit includes:
When the determination result of the temperature determination unit is the measured temperature ≧ the reference temperature, the combination mode is set,
2. The aircraft light control device according to claim 1, wherein the single mode is set when a determination result of the temperature determination unit satisfies the measurement temperature <the reference temperature. 3.   The aviation light control device according to claim 5, wherein the housing is a rubber molded housing.   The control unit controls the semiconductor switch to be closed first and then the mechanical switch to be closed in the combined mode when the circuit for turning on and off the aeronautical light is closed. An aviation light control device according to any of the claims.   The said control part performs control so that the said mechanical switch may be opened first, and then the said semiconductor switch may be opened in the said combination mode when the lighting circuit of the aeronautical light is opened. The aviation light control device according to any one of the above. The semiconductor switch is a field effect transistor,
The aircraft light control device according to any one of claims 1 to 8, wherein the mechanical switch is an auxiliary relay.

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