KR20170032112A - Power Supply Apparatus for Electronic Lamp Switch - Google Patents

Abstract

The present invention relates to a power supply apparatus of an electronic lamp switch, and an objective of the present invention is to obtain a voltage by using a drop voltage (Vf) of a diode while a lamp load is on so as to supply a stable driving power to the electronic light switch. According to the present invention, the power supply apparatus of the electronic lamp switch includes lamp switching units for turning on/off a plurality of lamps (L1 to L3), respectively, a switch controller for controlling each of the lamp switching units to be turned on/off, and a power supply unit for supplying power consumed in the switch controller to the switch controller. The power supply unit includes: a power acquisition unit for acquiring power from a first lamp switching unit and a power line (SW_COM) when the first lamp switching unit is on; a first rectification unit for rectifying the power acquired by the power acquisition unit; an insulation part for insulating output power of the first rectification unit; a second rectification unit for converting the power of the insulation part into a direct current (DC) power; and a DC/DC converter for decreasing a DC voltage from the second rectification unit and supplying the decreased DC voltage to a switch controller.

Description

Technical Field [0001] The present invention relates to a power supply apparatus for an electronic light switch,

The present invention relates to an apparatus for supplying driving power to an electronic switch for controlling lighting of a lamp, and more particularly to a power supply for driving an electronic switch for wireless remote control of an indoor / outdoor lamp, The present invention relates to a power supply device for an electronic light switch that extracts a power supply from a power supply and converts the power supply to a DC power supply.

The blinking of indoor and outdoor lights installed on a typical building or the like is configured to turn on / off by direct operation of a mechanical switch embedded in a wall.

That is, FIG. 1 is a general circuit diagram of a lamp and a switch. As shown in FIG. 1, a supply AC power source (AC 220V) for each of the lamps L1 to L3 installed on a ceiling or a wall is connected to each of the switches SW1 to SW3 embedded in the wall And directly turned on / off.

Conventionally, in order to solve the inconvenience of directly operating the switch to turn on / off the lamps installed in each room or toilet, kitchen, outdoor, etc., the RF lamp is used to control each lamp remotely, To turn on / off all of the lights in the RF remote control.

FIG. 2 is a block diagram of a power supply device for an RF switch controller of a lamp according to the related art, which is disclosed in Korean Patent Registration No. 10-1015649 (dated February 22, 2011).

That is, there are a plurality of lamps L1 to L3 installed inside and outside the building, first to third lamp switching units 111 to 113 for turning on / off each of the lamps L1 to L3, And a power supply unit 150 for supplying power to the RF switch controller 100. The RF switch controller 100 controls the RF switch controller 100 to remotely control the RF switch controller 111, The power supply unit 150 is a current booster for rectifying the micro-current flowing through the first lamp switching unit 111 to a predetermined high current by extracting the step-up voltage and DC power when the first and second lamp switching units 111 to 113 are on And a second rectifying unit 122 for rectifying and reducing the AC power supplied to the main power supply line and the first lamp switching unit 111 when the first lamp switching unit 111 is off, The rectifying unit 131 and the AC / DC converter 132 and the first rectifying unit 122 when the lamp L1 is on, DC converter 132 to reduce the direct current power outputted from the AC / DC converter 132 when the lamp L1 is off, and supplies the reduced direct current power to the RF switch controller 100, And a DC / DC converter 140 for supplying the electric power to the controller 100.

The RF switch controller power supply device of the related art constructed as described above is configured such that even when a light switch for switching a plurality of lamps installed inside and outside a building is turned on, a booster circuit for connecting a plurality of transformers in series, It is possible to supply the driving power of the RF switch controller by boosting the micro current flowing through the AC power supply line of the switch.

In addition, since it is possible to boost the power supplied from the AC power line of the light switch to the RF switch controller, the existing mechanical switch embedded in the wall is replaced with the electronic switch, and the on / Off. In this case, there is no need to install a battery for supplying power to a separate RF switch controller, or to find a main AC power line embedded in a wall or a ceiling, thus facilitating the installation.

However, since the power supply of the RF switch controller of the electric lamp according to the related art has a problem that the space efficiency is poor when the transformer is installed in a narrow switch box due to its large volume, the manufacturing process is complicated due to manual operation in the manufacturing process, There is a problem that the cost increases.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a power supply of an electronic light switch that obtains a voltage using a drop voltage Vf of a diode while a light load is on, The purpose is to provide a feeding device.

In order to accomplish the object of the present invention, a power supply device for an electronic light switch includes: a plurality of lamp switching units for turning on / off a plurality of lamps (L1 to L3); a switch controller for on / off controlling each of the lamp switching units; And a power supply unit for supplying power to the switch controller, wherein the power supply unit supplies power from the first lamp switching unit and the power supply line (SW_COM) when the first lamp switching unit is on A power acquisition unit for acquiring power; A first rectifying unit for rectifying the power obtained by the voltage acquiring unit; An insulating portion for insulating the output power of the rectifying portion; A second rectifying part for converting the power of the insulation part into a direct current; And a DC / DC converter for reducing the direct-current voltage from the second rectifier and supplying the reduced voltage to the switch controller.

Here, the second diode group is connected in parallel with the first diode group, and the second diode group includes a plurality of diodes connected in series in a reverse direction, wherein the first and second diode groups are composed of a pair or a plurality of pairs do.

The insulating portion may include an oscillating portion that oscillates a voltage rectified by the first rectifying portion; And a transformer for generating a current on the secondary side in accordance with the oscillation of the oscillation portion.

The power supply device of the electronic light switch according to the present invention obtains power from a light circuit by connecting a forward diode group and a reverse diode group in which a plurality of diodes are connected in series in parallel to minimize the consumption current of the lamp, A surface mount device (SMD) is used, or an application specific integrated circuit (ASIC) is used. Thus, space efficiency can be improved.

In addition, when the power switch of the light switch is in the on state, an insulation part is added to the power acquisition circuit so that the power acquisition circuit when in the off state is not connected to the ground, so that the afterglow can be prevented from occurring even when the lamp is off.

1 is a general circuit diagram of a light switch and a switch,
2 is a block diagram of a conventional RF switch controller power supply,
3 is a circuit diagram of a power supply device of an electronic light switch according to an embodiment of the present invention,
4 is a circuit configuration diagram of a power acquisition unit according to another embodiment of the present invention,
FIG. 5 is a circuit diagram illustrating a power acquisition unit according to an embodiment of the present invention,
FIG. 6 is a waveform diagram for explaining power acquisition of the power acquisition unit in FIG. 5,
5 and 6 are views for explaining power connection and power supply when the lamp is turned on / off according to the embodiment of the present invention.

The power supply device of the electric light switch of the lamp according to the embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 3 is a circuit configuration diagram of a power supply device for an electronic light switch according to an embodiment of the present invention. The first to third lamps L1 to L3 and the lamps L1 to L3 are turned on / A switch controller 100 for on / off controlling each of the light switchers 111 to 113, and a switch controller 100 for switching on and off the lamp switches 111 to 113 A first power supply unit 200 for supplying driving power to the switch controller 100 when the first and second switch units 111 to 113 are turned on; And a second power supply unit 130 for supplying driving power to the first power supply unit 100.

The first power supply unit 200 includes a power acquisition unit 210 that acquires power from the first lamp switching unit 111 and the switch common line SW_COM when the first lamp switching unit 111 is on, A first rectifying part 220 rectifying the voltage obtained by the power obtaining part 210; an insulating part 230 insulating the output voltage of the first rectifying part 220; And a second rectifying part 240 for converting the voltage of the rectifying part 240 into a direct current.

The second power supply 130 supplies the AC power to the switch common line SW_COM and the first lamp switching unit 111 when the first lamp switching unit 111 is turned off, And a second rectifying unit 131 and an AC / DC converter 132. [

The DC voltage (DC 5V) obtained from the first and second power supply units 200 and 130 is supplied to the DC / DC regulator 140, which is reduced to a DC power source (3.3V) and supplied to the switch controller 100 .

The lamps L1 to L3 and each of the lamp switching units 111 to 113 can be configured by only one lamp L1 and the lamp switching unit 111 and one to six lamps are common, And a lamp switching unit are possible. In an embodiment of the present invention, a three-way switching unit will be described as an embodiment.

The switch controller 100 includes an RF receiving unit 103 for receiving a wireless switch signal from the remote controller 101, selection switches SW1 to SW3 for turning on and off each of the lamps by the user, OFF switching signals of the respective lamps L1 to L3 from the RF receiving unit 103 or the user's selection switches SW1 to SW3 are input to the display unit 104, And a microcontroller 102 for outputting on / off control signals S1 to S3 of the corresponding lamp switching units 111 to 113 and controlling the display unit 104. [

The first to third lamp switching units 111 to 113 are connected to the respective microcomputer 102 for generating the switch driving signals as the on / off control signals S1 to S3 of the respective lamps, which are output from the microcontroller 102, MOS relays PC1 to PC3 and triacs Q1 to Q3 for controlling power supply of the corresponding lamps L1 to L3 in accordance with ON / OFF of the respective photo MOS relays PC1 to PC3 have.

Here, the triacs Q1 to Q3 may be configured as relays.

The power acquisition unit 210 may be provided with a plurality of rectification diodes connected in series between the first light switch L1 and the switch common line SW_COM in a state in which the first light switch L1 is ON, 1 diode group 210a and a second diode group 210b connected in parallel to the first diode group 210a and having a plurality of diodes connected in series in the reverse direction.

As shown in FIG. 4, the first and second diode groups 210a and 210b may include a number of diodes or a plurality of pairs 211 to 213 connected in series according to need for power efficiency or heat radiation. Configuration is possible.

The insulation part 230 includes an oscillation part 231 for oscillating the voltage rectified by the first rectification part 220 and a transformer T for generating a current on the secondary side according to the oscillation of the oscillation part 231 do.

The second rectifier 240 includes a pair of Schottky diodes (SD1 and SD2).

Detailed operation of the power supply device of the electronic light switch according to the embodiment of the present invention will be described in detail with reference to FIGS. 3 to 6. FIG.

3 is a schematic circuit diagram of a power supply apparatus for an electromagnet type light switch according to an embodiment of the present invention. First, each of the lamps L1 to L3 provided on a wall or a ceiling is connected to a main power supply line A through respective lamps L1 to L3 And the main power line B on the switch side of each of the lamps L1 to L3 is embedded in the wall of the building.

The switches for turning on and off the respective lamps L1 to L3 are embedded in a box shape on one side of the wall so that the lamps L1 to L3 and the main power line B are connected to the lamp switching units 111 to 113 And the switch terminal 110 is constituted by a power line connector of an electronic light switch.

The switch terminal 110 is turned on and off according to ON / OFF switching of each of the lamp switching units 111 to 113, and the switch controller 100 drives the switch controller 100 Acquire and supply power.

That is, one side of the first to third lamps switching units 111 to 113 is connected to the corresponding lamps L1 to L3 and the other side is connected to the switch common line SW_COM, which is the main power line B, DC power is obtained in different ways when the corresponding lamp switching units 111 to 113 are turned on or off so that the driving power is always supplied to the switch controller 100.

The power acquisition unit 210 for acquiring power when one of the first to third electric lamps 111 to 113 is turned on will be described in detail.

The power acquisition unit 210 acquires power necessary for driving the switch controller 100 through a pair of first and second diode groups 210a and 210b connected in parallel in forward and reverse directions.

FIG. 5 is a schematic circuit diagram for explaining a specific example of the power acquisition unit according to the embodiment of the present invention. When the first lamp switching unit 111 is turned on, the first lamp L1 is turned on, The first lamp L1 is turned on and the driving power of the switch controller 100 is obtained through the closed loop A2.

The power acquisition unit 210 for acquiring the DC power when the electric lamp is turned on will be described in detail as follows.

6 is a waveform diagram for explaining power acquisition of the power source acquisition unit 210. The power source acquisition unit 210 includes an AC power source AC 220 ), A drop voltage (Vf = 0.8V) is generated in each of the diodes connected in series in the forward direction and the reverse direction, and when the ten diodes are connected in series, the voltage of about 8V can be obtained.

That is, due to the drop voltage of the ten diodes connected in series in the forward and reverse directions as the lamp L1 is turned on, the AC voltage 220V is clamped to the front end of the power obtaining unit 210, A voltage close to a square wave of 8 V can be obtained.

The AC voltage 8V obtained from the AC voltage 220V input through the lamp is rectified through the first rectifier 220 to generate the DC power.

The first lamp switching unit 111 is turned on to form the power connection closed loop A1 so that the lamp L1 is turned on and the power supply process of the switch controller 100 is described in detail Then,

7 is a view for explaining the power supply connection and the switch controller power supply when the lamp is turned on according to the embodiment of the present invention. As the triac Q3 of the first lamp switching unit 111 is turned on, The closed loop A1 is formed so that the lamp is turned on and the first power supply unit 200 forms the closed loop A2 for power supply to supply the driving power to the switch controller 100. [

That is, as described in FIGS. 5 and 6, the DC power source obtains an 8 V AC power source close to a square wave by the power obtaining unit 210, and rectifies the DC power by the rectifying unit 220 to obtain a DC power source.

The DC power input through the first rectifier 220 is isolated from the insulation 230 formed of the oscillator 231 and the transformer T so that the DC power supplied to the second power supplier 130 The ground G1 and the ground G2.

The oscillating unit 231 oscillates the DC power output through the first rectifying unit 220 and drives the transformer T1 due to the oscillation of the oscillating unit 231 to generate a high frequency alternating current Power is generated.

The insulator 230 is electrically connected to the first power supply unit 200, which is a power supply circuit when the lamp is turned on, and the second power supply unit 130, which is a power supply circuit when the lamp is turned off, Thereby preventing the afterglow of the city.

AC power of high frequency (100 KHz) is generated at the secondary side obtained from the transformer T of the insulation part 230 and is rectified through the second rectification part 240 composed of the Schottky diodes SD1 and SD2 do.

The direct current power of the second rectifier 240 is reduced to a 5 V DC power through the DC / DC converter 250 and a direct current (DC) power that can drive the switch controller 100 through the DC / DC regulator 140 And the power is converted into DC 3.3V and supplied.

8 is a view for explaining the power supply connection and the power supply of the switch controller when the lamp is off according to the embodiment of the present invention. Thereby acquiring the driving power of the power supply 100.

That is, when the lamp is turned off, the triac Q3 of the first lamp switching unit 111 is turned off, so that the power source connected to the lamp L1 and the power source from the main power source line B are connected to the switching terminal B1 connected to the switch common line SW_COM and connected to the third rectifying unit 131 via the power line 110 to convert the supplied AC 220V AC power to DC power and then to AC DC converter 132 to be converted to DC 5V, and the DC / DC regulator 140 converts the inputted DC 5V to DC 3.3V to supply the DC / DC regulator 140 to drive the switch controller 100.

The power supply circuits 210, 220, 230, 240 and 250, which are the first power supply unit 200, are turned on when the respective lamp switching units 111 to 113 are turned on as shown in FIGS. 5 and 6, (DC 3.3V) can be supplied to the switch controller 100 through the power supply circuit 140. When the lamp is off, the power supply circuit 210 (132), which is the second power supply 130, (DC 3.3V) can be supplied to the switch controller 100 through the switch 140.

 Thus, regardless of whether the respective lamps L1 to L3 are turned on or off, the switch controller 100 can always supply the drive power DC 3.3V.

When the driving power is supplied to the switch controller 100, the switch controller 100 receives the remote control signal of the user using the wireless terminal such as the remote controller or the smart phone through the RF receiver 103 and outputs the remote control signal to the MCU 102.

The MCU 102 receives the light control signals from the RF receiver 103 and outputs the on / off signals S1 to S3 to the corresponding lamp switching units 111 to 113.

Each of the lamp switching units 111 to 113 turns on the photo MOS relays PC1 to PC3 of the corresponding lamp switching units 111 to 113 upon receipt of the lamp ON / OFF signals S1 to S3, The corresponding lamps L1 to L3 are turned on as the triacs Q1 to Q3 are turned on.

On the other hand, when the user directly selects and operates the switches SW1 to SW3 without using a wireless terminal such as a remote controller or a smart phone, the MCU 102 senses the selection and operates the lamp The on / off control of the corresponding lamp is performed in the same process as the remote on / off control of the lamp.

The on / off state of each of the lamps L1 to L3 is displayed on the display unit 104 under the control of the MCU 102.

Although specific embodiments of the present invention have been described and illustrated above, it is to be understood that various modifications may be made by those skilled in the art in accordance with the number of multiplexed information processing modules of the present invention.

It should be understood, however, that such modified embodiments are not to be understood individually from the spirit and scope of the invention, and such modified embodiments are intended to be included within the scope of the appended claims.

100: Switch controller
102: Microcontroller 103: RF receiver
104: Display section 110: Switch terminal
111 to 113: First to third lamp switching units
200, 130: first and second power supply units
210: power acquisition unit 220, 240, 131: first to third rectification units
230: Insulation part 250: DC / DC converter
132: AC / DC converter 140: DC / DC regulator

Claims (7)

A switch controller 100 for on / off controlling each of the lamp switching units 111 to 113, a switch controller 100 for turning on / off the plurality of lamps L1 to L3, And a power supply unit (150) for supplying power to the power supply unit (100), the power supply unit comprising:
The power supply unit 150 includes a power obtaining unit 210 for obtaining power from the first lamp switching unit 111 and the power supply line SW_COM when the first lamp switching unit 111 is on;
A first rectifying part 220 for rectifying the power obtained by the voltage obtaining part 210;
An insulation unit 230 for insulating the output power of the first rectification unit 220;
A second rectification part 240 for converting the power of the insulation part 230 into a direct current;
And a DC / DC converter (250) for reducing the DC voltage from the second rectifier (240) and supplying the reduced voltage to the switch controller (100). The method according to claim 1,
When the first light switch L1 is turned on,
A first diode group 210a having a plurality of diodes connected in series between the first light switch L1 and the switch common line SW_COM; And
And a second diode group 210b connected in parallel with the first diode group 210a and having a plurality of diodes connected in series in a reverse direction,
Wherein the first and second diode groups 210b are formed as a pair or a plurality of pairs. The method according to claim 1,
The insulation part 230 includes an oscillation part 231 for oscillating a voltage rectified by the first rectification part 220; And
And a transformer (T) for generating a current in a secondary side in accordance with the oscillation of the oscillation unit (231). The method according to claim 1,
Wherein the second rectifier (240) comprises a pair of Sect key diodes (SD1, SD2). The method according to claim 1,
A rectifying unit for converting and reducing the AC power supplied to the main power line and the first electric power switching unit 111 to DC and supplying the AC power to the switch controller when the first electric power switching unit 111 is off, Converters (131) and (132) connected to the power supply. The method according to claim 1,
The switch controller 100 includes a wireless receiver 103 for receiving a wireless switch signal from a remote controller or a smartphone;
A display unit 104 for displaying on / off states of the lamps L1 to L3;
The on / off control S1 to S3 of the corresponding lamp switching units 111 to 113 as the on / off signals of the lamps L1 to L3 input from the wireless receiving unit 103 are input, And a microcontroller (102) for controlling the power supply of the electronic light switch. The method according to claim 6,
The microcomputer 102 further includes switches SW1 to SW3 that directly turn on / off the respective lamps L1 to L3 by the user in addition to the microcontroller 102. The user selection of the switches SW1 to SW3 (S1 to S3) of the corresponding lamp switching units (111 to 113) by detecting a signal from the microcomputer (102) by the microcontroller (102).

Images