KR20200079719A - Power Supply Apparatus for Electronic Lamp Switch - Google Patents

Abstract

The present invention relates to a power supply apparatus for an electronic lamp switch. An object of the present invention is to extract an instantaneous voltage from a voltage supplied to a lamp while a lamp load is on to supply a driving power to a microcontroller, a wireless communication module and the like of the electronic lamp switch.

Description

Power supply for electronic light switch {Power Supply Apparatus for Electronic Lamp Switch}

The present invention relates to an apparatus for supplying driving power of an electronic switch for controlling a spotlight of a lamp, and more specifically, AC for supplying power to a lamp for driving an electronic switch for wireless remote control of power for indoor and outdoor lights It relates to a power supply device of an electronic light switch that extracts power and converts it into DC power.

The flashing of indoor and outdoor lights installed in general buildings, etc., is configured to be turned on/off by direct manipulation of a mechanical switch embedded in a wall.

That is, FIG. 1 is a general light and switch circuit diagram. As shown in this, the AC power (AC 220V) supplied to each light (L1 to L3) installed on the ceiling or the wall is provided with each switch (SW1 to SW3) embedded in the wall. It is turned on/off by direct manipulation.

Conventionally, each light is controlled remotely using RF radio signals to solve the inconvenience of having to manually operate the switch to turn on/off the lights installed in each room or bathroom, kitchen, outdoor, etc. It is possible to turn on/off all the lights in the RF remote control with one.

However, for each light (L1 to L3) installed on a wall or ceiling, the main power line (A) is connected only to each light (L1 to L3) to supply AC power, and it is not connected to the switch stage, but each light (L1) Only the main power line (B) on the switch side of ~L3) is embedded in the wall of the building, so in the end, the main power line (A) does not exist on the switch box side, so when the light is on, it is controlled by wireless remote control. It was not possible to obtain the driving power of the electronic light switch for the vehicle.

Figure 2 is a block diagram of the RF switch controller power supply of a lamp according to the prior art, which is disclosed in Korean Patent Registration No. 10-1015649 (announcement date 2011.02.22.).

Referring to FIG. 2, a plurality of lamps L1 to L3 installed indoors and outdoors of a building, and first to third lamp switching units 111 to 113 for turning on/off each lamp L1 to L3, and each of the lamps RF switch controller 100 for remotely controlling the light switching units 111 to 113 by an RF wireless signal from the remote controller 101, and a power supply unit 150 for supplying power required for the RF switch controller 100 Consists of, and the power supply unit 150 extracts and boosts the micro-current flowing through the first light switching unit 111 to a set high current when each of the light switching units 111 to 113 is turned on and rectifies with DC power. When the current booster 121 and the first rectifying unit 122 and the first light switching unit 111 are turned off, the main power line and the AC power supplied to the first light switching unit 111 are rectified and The second rectifying unit 131 and the AC/DC converter 132 to depressurize, and when the lamp L1 is on, decompresses the DC power extracted through the first rectifying unit 122 to reduce the RF switch controller ( 100), and when the light (L1) is off, DC/DC converter (140) to supply the DC switch controller 100 by reducing the DC power output through the AC/DC converter (132) ).

The RF switch controller power supply device according to the prior art configured as described above uses a booster circuit that connects a plurality of transformers in series even when an electronic light switch for switching a plurality of lights installed inside and outside the building is turned on. By boosting the micro-current flowing in the AC power line of the light switch, there is an effect that can supply the driving power of the RF switch controller.

In addition, as it is possible to boost the power from the AC power line of the light switch to the power supplied to the RF switch controller, the existing mechanical switch installed on the wall is replaced with an electronic switch, and the light is turned on/off by an RF wireless signal. There is an effect that can be turned off, and at this time, there is no need to install a battery for supplying power to a separate RF switch controller, or to find and connect the main AC power line embedded in the wall or ceiling, so it is easy to install.

However, the RF switch controller power supply device of the light according to the prior art has a problem that space efficiency is poor when installed in a narrow switch box due to a large transformer volume, and the manufacturing process is complicated due to manual processing in the manufacturing process. There was a problem that was a factor of cost increase.

Therefore, the present invention extracts the instantaneous voltage from the voltage supplied to the lamp while the lamp load is on in order to improve the problems of the prior art. An electronic lamp to supply driving power to the microcontroller, wireless communication module, etc. of the electronic lamp switch. The purpose is to provide a power supply for the switch.

Power supply device of the electronic light switch for achieving the object of the present invention, each light switching unit for turning on/off at least one light (L1 ~ L3) driven by AC power (AC), and each light switching unit In the power supply of the electronic light switch consisting of a switch controller for controlling on/off and a power supply for supplying DC power (DC) required for the switch controller, the power supply is connected to the light when the light switching unit is in the on state. A first power supply unit that obtains DC power (DC) from the supplied AC power (AC); And a second power supply unit that obtains DC power (DC) from the supplied AC power (AC) when the light switching unit is in the off state, wherein the first power supply unit is in the state where the lights (L1 to L3) are lit. Power acquisition unit for extracting the instantaneous fine voltage from the AC power supply (AC) supplied to the light (L1 ~ L3), and converting it to the first DC power supply (DC1); It includes; a power converter for supplying the second DC voltage (DC2) obtained by converting the first DC power DC1 obtained from the power acquisition unit to a set level to the driving power of the switch controller, wherein the second power supply is main A first rectifying unit for converting AC power supplied to the power line and the lights L1 to L3 into direct current; It characterized in that it comprises a; insulating unit for inputting the DC voltage extracted from the first rectifying unit to the power converter 123 by separating the load terminal and the ground.

Here, the power acquisition unit is the first light switch (L1) and the first and second Zener diodes connected in series so as to face in opposite directions across the common switch (SW_COM); The first and second diodes are connected in parallel in each forward direction to both ends of the first and second zener diodes, including; connecting the first and second diode forward ends, and connecting the contacts (A) and the first It is characterized in that the DC power is obtained through the contact between the first and second zener diodes.

The power supply device of the electronic light switch according to the present invention uses a pair of zener diodes to obtain an instantaneous voltage from the voltage supplied to the light while the light load is on, converts it into a transformer and DC power, and converts it into an electronic light switch Since the driving power is supplied to the microcontroller and the wireless communication module, the driving power of the electronic switch can be supplied even when the light switch is ON.

1 is a general light and switch circuit diagram,
2 is a block diagram of an RF switch controller power supply according to the prior art,
3 is a circuit diagram of a power supply of an electronic light switch according to an embodiment of the present invention,
4 is a view for explaining the DC power acquisition in the state that the light switch in Figure 3 is on,
5A to 5C are waveform diagrams of DC power obtained when the light switch according to another embodiment of the present invention is turned on,
FIG. 6 is a view for explaining DC power acquisition in a state where the light switch is off in FIG. 3.

When explaining in detail with reference to the accompanying drawings, a power supply device for an electronic light switch of a light according to an embodiment of the present invention.

3 is a circuit diagram of a power supply of an electronic light switch according to an embodiment of the present invention, the first to third lights (L1 ~ L3) to turn on / off by the supplied AC power (AC 220V), The first to third light switching units 111 to 113 to turn on/off (ON/OFF) the supply AC power (AC 220V) of each of the lights L1 to L3, and each of the light switching units 111 to 113 ) Switch controller 100 for controlling on/off, and a first power supply unit 120 for supplying driving power required to the switch controller 100 when the light switching units 111 to 113 are ON. ) And the second power supply unit 130 that supplies driving power to the switch controller 100 when the light switching units 111 to 113 are OFF.

Here, the light (L1 ~ L3) and each light switching unit (111 ~ 113) can be composed of only one light (L1) and light switching unit 111, 1 to 6 spheres are common, but more light And it is possible to configure the light switching unit, the embodiment of the present invention will be described in one embodiment the three-way switching unit.

The switch controller 100 includes an RF receiver 103 that receives a wireless switch signal from the remote controller 101, selection switches SW1 to SW3 for turning on/off each light by a user, and each light L1. ~L3) the on/off state of the display unit 104, and the RF receiving unit 103 or the user's selection switch (SW1 ~ SW3) from the on / off switching signal of each light (L1 ~ L3) is input Accordingly, the on/off control signals S1 to S3 of the corresponding light switching units 111 to 113 are output, and the microcontroller 102 controls the display unit 104.

Each of the first to third light switching units 111 to 113 generates a switch driving signal as on/off control signals S1 to S3 of each light output from the microcontroller 102 are input. It consists of MOS relays (PC1 to PC3) and respective triacs (Q1 to Q3) that control the power supply of the corresponding lights (L1 to L3) according to the on/off of each of the photoMOS relays (PC1 to PC3). have.

Here, each of the triacs (Q1 to Q3) can be configured as a relay.

The first power supply unit 120 extracts the instantaneous fine voltage from the AC power supply AC supplied to the lamps L1 to L3 when the lamps L1 to L3 are in a lit state, and generates the first DC power ( DC1), the power supply acquiring unit 121 and the second DC voltage DC2 obtained by transforming the first DC power DC1 obtained from the power acquiring unit 121 to a set level are driven by the switch controller. It consists of a power converter 123 to supply.

Here, the power acquisition unit 121 is the first and second Zener diodes (ZD1) (ZD2) and the first and second Zener diodes (ZD2) connected in series so as to face the first light switch (L1) and the switch common line (SW_COM) opposite ends , First and second diodes (D1) (D2) are connected in parallel in the forward direction to each end of the second Zener diode (ZD1) (ZD2).

The second power supply unit 130 is extracted from the first rectifying unit 131 and the first rectifying unit 131 for converting AC power (AC) supplied to the main power line and the lights L1 to L3 into direct current. It is composed of an insulating unit (132) (133) (134) that separates the load voltage and ground to input the DC voltage to the power converter (123).

Here, the insulation unit 132, 133, 134 is operated by the oscillator 133 for converting the DC power output through the first rectifying unit into AC, and the pulse output through the oscillator 133 The transformer 134 that step-downs the voltage input to the primary winding L1 and outputs it to the first and second secondary windings L2 and L3, and the counter electromotive voltage generated by the coil when the transformer 134 is driven. The absorbing snubber circuit 132 and the voltage divider resistor R1 for dividing the output voltage of the second secondary winding L3 so as to limit the feedback voltage so that the oscillator 133 oscillates pulses below a set voltage (( R2).

The detailed operation of the power supply device of the electronic light switch according to the embodiment of the present invention configured as described above will be described in detail with reference to FIGS. 3 to 6 as follows.

3 is an overall circuit diagram of a power supply of an electromagnet light switch according to an embodiment of the present invention. First, each light (L1 to L3) installed on a wall or ceiling has a main power line (A) for each light (L1 to L3). It is connected only to supply AC power, not connected to the switch end, and the main power line (B) on the switch side of each light (L1 to L3) is embedded in the wall of the building.

The switches for turning on/off the respective lights L1 to L3 are buried in a box form on one side of the wall, so that each light switch L1 to L3 and the main power line B are connected to the light switch parts 111 to 113. It consists of a switch terminal 110 to be connected, the switch terminal 110 is composed of a power line connector of the electronic light switch.

Therefore, since the main power line (A) does not exist on the switch terminal 110 side, the electric power of the electric light switch must be obtained only in the main power line (B) of the switch side, as well as in the off state. .

To this end, one side of the first to third light switching parts 111 to 113 connected to the switch terminal 110 is connected to the corresponding light (L1 to L3), and the other side is a main power line (B) switch It is connected to the common line (SW_COM), and when the corresponding light switching units 111 to 113 are turned on and off, they obtain DC power in different ways to the switch controller 100. Make sure that the driving power is always supplied.

The power acquisition unit 120 for acquiring power when one of the first to third light switches 111 to 113 is turned on is as follows.

Referring to FIG. 4, as the first light switching unit 111 is turned on, the power acquisition unit 120 is turned on, the first light L1 is turned on, and a closed loop A1 is formed to form the first light ( L1) lights up.

Here, when the first switch SW1 embedded in the electronic light switch is turned on, the closed loop A1 generates the switch driving signal S1, and the switch driving signal S1 is the first. The photo coupler PC1 of the light switching unit 111 is turned on.

As the photo coupler (PC1) is turned on, the current flowing through the first lamp (L1) is connected to the first triac (Q1) and the first and second Zener diodes (ZD1) (ZD2) symmetrically connected in series in the reverse direction. It is connected to the switch common line (SW_COM) to form a closed loop (A1).

At this time, the first and second Zener diodes (ZD1) (ZD2) of the power acquisition unit 121 is the first Zener in the positive (+) cycle of the AC power as AC power is applied to both ends. A diode ZD1 is conducted over the breakdown voltage and is supplied to the driving power of the lamp through the second Zener diode ZD2, but below the breakdown voltage, it is instantaneous at both ends of the first Zener diode ZD1 by a forward current. Acquiring a voltage, and when the AC power is negative (-), the second Zener diode (ZD2) is conducted above the breakdown voltage and supplied to the driving power of the lamp (L1) through the first Zener diode (ZD1). In the case of a breakdown power source or below, an instantaneous voltage is obtained at both ends of the second Zener diode ZD2 by a forward current.

The instantaneous voltages obtained in the positive (+) and negative (-) periods are the first and second diodes (D1) (D2) forwardly connected to both ends of the first and second Zener diodes (ZD1) (ZD2), respectively. DC power is obtained through the connection point (P). (See Fig. 5)

That is, referring to FIGS. 5A to 5C, the input AC power AC acquires an instantaneous voltage of about 6V through the first and second Zener diodes ZD1 and ZD2, and the obtained instantaneous voltage 6V is 1, the second diode (D1) (D2) through the connecting contact (P) to obtain the power of the DC 6V.

Here, the instantaneous voltage 6V is about 1.929% of the input power 311V, so a very minute instantaneous voltage is obtained, and this is to use an instantaneous power failure of a degree not discerned by the naked eye.

The voltage obtained through this process is smoothed through capacitors C10, C11 and diode D3 to obtain DC power of 5V, and the switch controller 100 is driven through the power converter 123. It is converted to DC3.3V DC power supply and supplied.

6 is a view for explaining the power connection and power supply of the switch controller when the light is off according to an embodiment of the present invention, when the light is off, the switch controller through the second power supply unit 130 The driving power of (100) is obtained.

That is, when the light is turned off, since the triac Q1 of the first light switching unit 111 is off, the power line connected to the light L1 and the power from the main power line B are switching terminals. Connected to the switch common line (SW_COM) through (110) and connected to the power line of'B1', respectively connected to the first rectifying unit 131 side, converting the supplied AC 220V AC power to DC power, and then changing to "B2 "After obtaining the stepped +5V DC power through the transformer 134 through the path, it is converted to +3.3V through the power converter 123 and then supplied to the switch controller 100.

At this time, the first power supply unit 120 which is a power supply circuit when the light is on and the second power supply unit 130 which is a power supply circuit when the light is off are insulated to prevent afterglow when the light is off by a common ground. In order to do this, the transformer 134 is used for heat transfer.

More specifically, the transformer 134 is used to isolate the ground by separating it into'G1' and'G2'. To this end, the transformer 134 is driven by the pulse generated through the oscillator 133, and the primary winding The voltage input to (L1) is stepped down to output the first and second secondary windings (L2) (L3).

On the other hand, the output voltage obtained from the second secondary winding L3 limits the feedback voltage so that the oscillator 133 oscillates the pulse below the set voltage using the divided resistors R1 and R2.

In addition, a snubber circuit 132 is formed at the front end of the primary winding L1 of the transformer 134 to absorb the back electromotive voltage generated by the coil when the transformer 134 is driven.

In this way, regardless of whether each light (L1 ~ L3) is turned on or off, it is possible to always supply the driving controller DC 3.3V to the switch controller 100.

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

The MCU 102 outputs on/off signals S1 to S3 to the corresponding light switching units 111 to 113 in response to receiving a light control signal from the RF receiving unit 103.

The light switching units 111 to 113 turn on/off the photo MOS relays PC1 to PC3 of the corresponding light switching units 111 to 113 as the light on/off signals S1 to S3 are input. As the corresponding triacs (Q1 to Q3) are turned on, the corresponding lights (L1 to L3) light up.

Meanwhile, when the user directly selects and operates the switches SW1 to SW3 without using a wireless terminal such as a remote control or a smartphone, the MCU 102 detects this and the light inputted through the RF receiver 103 The corresponding light is turned on/off in the same process as the remote on/off control of.

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

In addition, although specific embodiments of the present invention have been described and illustrated above, it is obvious that various modifications and implementations may be made by those skilled in the art according to the multiplexing number of the information processing module of the present invention.

However, such modified embodiments should not be individually understood from the technical spirit or scope of the present invention, and such modified embodiments should be included in the appended claims of the present invention.

100: switch controller
102: microcontroller 103: RF receiver
104: display 110: switch terminal
111 ~ 113: 1st to 3rd light switching unit
120,130: 1st, 2nd power supply
121: power acquisition unit 131: first rectification unit
123: Power converter

Claims (6)

Each light switching unit for turning on/off at least one light (L1 to L3) driven by AC power (AC), a switch controller for controlling on/off of each light switching unit, and direct current required for the switch controller In the power supply device of the electronic light switch consisting of a power supply 120 for supplying power (DC),
The power supply unit includes a first power supply unit that obtains DC power (DC) from AC power (AC) supplied to the lamp when the light switching unit is on; And a second power supply unit that obtains DC power (DC) from the supplied AC power (AC) when the light switching unit is in an off state.
The first power supply unit extracts the instantaneous fine voltage from the AC power AC supplied to the lights L1 to L3 when the lights L1 to L3 are in a lit state, and converts them into a first DC power DC1. Power acquisition unit for obtaining conversion;
It includes; a power converter for supplying the second DC voltage DC2 obtained by converting the first DC power DC1 obtained from the power acquisition unit to a set level to the driving power of the switch controller.
The second power supply unit includes a first rectifying unit that converts AC power (AC) supplied to the main power line and the lights (L1 to L3) into DC; And
It characterized in that it comprises a; insulating unit for inputting the DC voltage extracted from the first rectifying unit to the power converter by separating the load terminal and the ground; According to claim 1,
The power acquiring unit includes first and second Zener diodes connected in series so as to be symmetrical in opposite directions at both ends of the first light switch L1 and the switch common line SW_COM;
The first and second diodes are first and second diodes connected in parallel in each forward direction to each end of the second;
A power supply device for an electronic light switch, wherein the first and second diode forward ends are connected, and DC power is obtained through a contact between the connection contact point (P) and the first and second zener diodes. According to claim 2,
In the positive (+) cycle, the first Zener diode is conducted over the breakdown voltage and is supplied to the driving power of the lamp through the second Zener diode, and below the breakdown voltage, the first Zener is driven by the forward current. Instantaneous voltage is obtained at both ends of the diode,
In the negative (-) cycle, the second Zener diode is conducted above the breakdown voltage and supplied to the driving power of the lamp through the first Zener diode, and below the breakdown power source, the second Zener is driven by forward current. Acquiring the instantaneous voltage across the diode,
The instantaneous voltage is a power supply device of the electronic light switch, characterized in that for obtaining the direct current power through the connection contacts of the first and second diodes. According to claim 1,
The insulating unit is an oscillator for converting the DC power output through the first rectifying unit into AC;
A transformer operated by a pulse output through the oscillator to step down the voltage input to the primary winding and output the first and second secondary windings;
A snubber circuit part that absorbs the counter electromotive voltage generated in the coil when the transformer is driven; And
The oscillator comprises a voltage divider resistor (R1) (R2) for dividing the output voltage of the second secondary winding so as to limit the feedback voltage to oscillate the pulse below the set voltage,
The first secondary winding is a power supply device for an electronic light switch, characterized in that it is connected to the power converter with the first DC power. According to claim 1,
The switch controller includes a wireless receiver that receives a wireless switch signal from a remote control or a smartphone;
A display unit for displaying on/off states of each of the lamps L1 to L3;
The on/off control of the corresponding light switching unit (S1 to S3) as the on/off signal of each light (L1 to L3) inputted from the wireless receiving unit is input, and a microcontroller controlling the display unit; Power supply for the electronic light switch. The method of claim 5,
In addition to the microcontroller, each switch (SW1 to SW3) for directly turning on/off each light (L1 to L3) by a user is further configured, and the user selection signal of each switch (SW1 to SW3) is Power supply for the electronic light switch that detects the micro-controller and controls on/off (S1~S3) the corresponding light switching unit.

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