KR20230063750A - Hybrid switch control device - Google Patents

Abstract

The present invention relates to a hybrid switch control device. The hybrid switch control device comprises: a relay switch which is disposed between power lines of a building which are connected to a ground line of the building and receive a load in the building driven according to whether power is supplied and external commercial power to transfer the same to the load, and is operated by switching according to the strength of a magnetic field generated in an internal coil; a charging unit which is disposed between the relay switch and a front end of the power lines, and charges the commercial power through operations of turning on or turning off; a drive unit which turns on or turns off the charging unit according to a preset duty ratio; a switching power unit which charges an inner capacitor with a current generated according to the driving of the charging unit; and a switch control unit which includes an input switch connected to the power line via the relay switch and converted into a turning on or turning off state according to user input to excite the internal coil of the relay switch and turn on the relay switch when the input switch is turned on and supply the commercial power to the load through the power lines as the load and the power lines are electrically connected due to feedthrough of the relay switch. Accordingly, the present invention can implement various types of electronic switch structures by a circuit design to couple a control circuit to allow a power supply route be formed differently according to a switching state for an existing mechanical switch wiring circuit, thereby having an effect of improving efficiency and convenience without a burden of additional construction costs on users.

Description

Hybrid switch control device {HYBRID SWITCH CONTROL DEVICE}

The present invention relates to a hybrid switch control device that can be used in an electronic switch method without internal power distribution work by using a mechanical switch structure installed in an existing building.

In general, lighting installed in offices, homes, etc. is generally controlled by using a switch unit attached to a wall surface and AC power supplied into the building. Looking more specifically, one of the AC power lines coming into the building, a wiring line, is connected to the switch through the lighting of the building, and the other power line is directly connected to the switch. That is, the switch for lighting control is connected between the wiring line and the power line to turn on the corresponding light or lamp.

A switch for turning on lighting in a building has a standardized structure and size, and is generally installed on a wall of a building. In such a lighting switch, it is common for a user to directly turn on a light by raising or lowering a switch in the form of a lever or by pressing a switch in the form of a button by the user.

Recently, however, a method of manipulating lighting using a remote controller has been used for user convenience. In this case, when a wireless signal is transmitted to a switch installed on a wall of a building using a remote controller, the switch module performs an operation according to the transmitted wireless signal to control lighting.

However, when lighting is controlled using a wireless signal, a switch installed on a wall of a building must always be in a standby state to receive a wireless signal regardless of whether the lighting is turned on or not. That is, in order for the switch to be in a standby state so that it can receive a radio signal, generate a control signal corresponding to the received signal, and control the switch, standby power is constantly required.

In particular, electronic devices that transmit/receive wireless signals and generate control signals for them are driven by DC power, so standby power is generally in the form of DC power, not AC. Therefore, standby power that can stably supply DC power is needed. do.

In order to obtain such standby power, the method of using a primary battery is the main method, but when the life of the battery is over, the user has to replace the battery every time, which causes the hassle and waste of resources. In particular, the RF signal type In the case of using a wireless signal, since power consumption increases, there is a problem in that the replacement life of the battery is shortened.

In addition, as described above, since the space on the wall where the switch is installed has physical limitations, it is also undesirable to mount a battery having a large capacity indefinitely.

On the other hand, as interest in home automation (Home Automation) increases, a method of remotely controlling various home appliances, etc. equipped in the home by wireless means has recently attracted attention. Methods of using an essentially provided switch in an improved form operated by a radio signal are increasing.

However, this improved type of switch is used only in a form in which the wiring or terminal structure has already been determined due to standardization of the power supply method, etc. has a problem of considerably limited adaptability because it cannot be installed without performing additional work for structural change.

In this respect, it can be said that there is a great need for a switch device that can effectively utilize a so-called smart switch controlled by a wireless signal or the like without performing additional wiring work even in a conventional building.

KR 10-1698346 B1 KR 10-2021-0111373 A

An object of the present invention is to solve the above problems, and an object of the present invention is to provide a hybrid switch control device that can be used in an electronic switch method without internal power distribution work using a mechanical switch structure installed in an existing building.

A hybrid switch control device according to an aspect of the present invention for achieving the above object is connected to the ground line of the building and receives a load inside the building and an external commercial power driven depending on whether power is supplied and delivers it to the load A relay switch disposed between power lines of a building and performing a switching operation according to the strength of a magnetic field generated in an internal coil, and disposed between the relay switch and the front end of the power line to charge the commercial power through an on/off operation A charging unit, a driving unit for driving the charging unit on/off according to a preset duty ratio, and an input switch connected to the power line via the relay switch and switching to an on or off state according to a user input, When the input switch is turned on, the internal coil of the relay switch is excited so that the relay switch is turned on, and the load is electrically connected to the power line according to the conduction of the relay switch. It is characterized in that it includes a switch control unit for supplying power.

Preferably, when the input switch is in an on state, the AC voltage of the commercial power supplied through the power line is converted into a preset DC voltage and output, and the internal capacitor is charged using the converted DC voltage. It is characterized in that it further comprises a switching power supply to.

In addition, when the input switch is switched from an on state to an off state, the switch control unit uses charges charged in the internal capacitor of the switching power supply unit when the input switch is on after the time point when the input switch is switched to the off state. and is driven, and controls the driving unit to switch the charging unit to an off state.

Preferably, the switching power supply unit includes a bridge diode unit for full-wave rectifying the AC voltage of the commercial power applied to an input terminal and converting it into a DC voltage, a rectifier unit for smoothing the ripple of the full-wave rectified DC voltage, and When the smoothed direct current voltage is applied to the primary side, a power conversion unit including a transformer that boosts or reduces the voltage to a predetermined target voltage and outputs it to the secondary side or the tertiary side, and the internal capacitor using the secondary side output voltage of the transformer A charging circuit unit for charging, an output unit for detecting the tertiary-side output voltage of the transformer and selectively blocking the output of the voltage applied to the output terminal according to the result of comparing the detected output voltage with a preset overvoltage threshold, and a feedback circuit unit for stabilizing the output of the transformer by feedback inputting a feedback voltage based on the sensed output voltage to the primary side of the transformer.

Preferably, the relay switch includes a latching relay switch element that maintains the on state until a predetermined reset signal is generated when the relay switch is switched to an on state due to a magnetic field initially generated in the internal coil after operation is started or initialized. characterized by

According to the present invention, power is controlled in various ways such as touch, remote control, or voice recognition by a circuit design that combines a control circuit for forming a power supply path differently according to the switch state with respect to a conventional mechanical switch wiring circuit. Since it is possible to implement an electronic switch structure, there is an effect of improving efficiency and convenience without the burden of additional construction costs on the user.

1 is a circuit diagram schematically illustrating a circuit of a hybrid switch control device according to an embodiment of the present invention;
FIG. 2 is a circuit diagram showing the internal circuit structure of each circuit configuration shown in FIG. 1 in detail.

The specific details, including the problems to be solved, the solutions to the problems, and the effect of the invention for the present invention as described above are included in the embodiments and drawings to be described below. Advantages and features of the present invention, and methods of achieving them, will become clear with reference to the detailed description of the following embodiments taken in conjunction with the accompanying drawings. Like reference numbers designate like elements throughout the specification.

1 is a circuit diagram schematically illustrating a circuit of a hybrid switch control device according to an embodiment of the present invention, and FIG. 2 is a circuit diagram showing an internal circuit structure of each circuit configuration shown in FIG. 1 in detail.

Hereinafter, a hybrid switch control apparatus according to an embodiment of the present invention will be described with reference to the above-described drawings.

First, the hybrid switch control device according to an embodiment of the present invention, as shown in FIG. It is composed of.

The relay switch 100 serves to selectively switch whether to supply power for driving a predetermined load.

The relay switch 100 is connected to the ground line (N) of the building and is driven depending on whether power is supplied to the load (X) in the building and the power line ( L) is placed between

The relay switch 100 performs a switching operation according to the strength of the magnetic field generated in the internal coil 110 by the current flowing on the power supply line L-N of the load X.

The relay switch 100 is a latching relay switch that maintains the on state until a predetermined reset signal is generated when it is switched to an on state due to a magnetic field first generated in the internal coil 110 after operation starts or initialization. It includes, and as shown in FIG. 2A, it may be provided with at least one or more switches RL1, RL2, and RL3.

In this case, when the starting current (OA1-OB1, OA2-OB2, OA3-OB3) is applied to the coil terminals (No. 4-6) inside the relay and the relay contacts (No. 5-1) are closed, the operation starts. Even if the signal is removed, it is possible to implement a self-maintaining function in which power is supplied through an operating circuit bypassed by the corresponding contact and maintains an operating state until a stop signal (reset) is input.

Here, the relay switch 100 is provided with two coils, one for the case where one of the Set/Reset operations selectively operates (1 coil latcing) according to the polarity of the voltage applied to one coil, and one for the Set operation It can include a case where one is used for reset operation and the other is used for reset operation (2 coil latching).

In addition, the relay switch 100 may indicate one of the states of 'Form A (always OPEN state)' and 'Form C (connected to one contact)' according to an on/off switching operation.

At this time, the maximum contact resistance value of the relay switch 100 is '100mΩ' under the voltage/current conditions of '6VDC' and '6A', and the insulation resistance value is '500VDC' under the voltage condition. '100MΩ', the insulation strength value between the coil and the contact is '2000VAC' per minute, the insulation strength value between the open contacts is '750VAC' per minute, and the maximum switching voltage value is '277VAC (AC)' and ' 30VDC (direct current)', and the maximum switching current value can be '15A' in 'Form A' state and '10A' in 'Form C' state.

In addition, in the maximum switching power of the relay switch 100, the apparent power (VA) value sent from the power plant may be '2770VA' and the active power (W) value actually consumed by the load may be '30W'.

Table 1 below shows the nominal voltage for the relay switch 100 (Nominational Voltage VDC), maximum SET voltage (Set Voltage VDC max.), maximum RESET voltage (Reset Voltage VDC max.), minimum pulse width (Pulse Width min. ) and coil resistance, etc., are summarized and shown.

Nominal Voltage VDC Set Voltage VDC max. Reset Voltage VDC max. Pulse Width
(ms) min. Max. voltage VDC Coil Resistance
[Ω] 5 4.0 4.0 100 10 62.5x (1±10%) 6 4.8 4.8 100 12 90x (1±10%) 9 7.2 7.2 100 18 202.5x (1±10%) 12 9.6 9.6 100 24 360x (1±10%) 24 19.2 19.2 100 48 1440x (1±10%) 48 38.4 38.4 100 96 (1±10%)

The charging unit 200 charges the commercial power delivered to the load side (X) through the power line (L) through an on/off operation.

The charging unit 200 is connected in parallel to an NMOS transistor Q1 disposed between the relay switch 100 and the front end of the power line L, and a source-drain terminal of the NMOS transistor Q1 to prevent reverse flow of the charging current. It may be composed of a circuit including one diode (D10, D11).

Here, the source terminal (S) of the NMOS transistor (Q1) is connected to the ground line (N), and the drain terminal (D) may be connected to one side (No. 5) of the contact terminal of the relay switch 100.

The driving unit 300 is to drive the charging unit 200 on/off according to a preset duty ratio.

The driving unit 300 is implemented by a driving integrated circuit U5 including a power input terminal (VIN), a reset signal terminal (ReSetn), a ground terminal (GND), a gate output terminal (Gate), and a feedback input terminal (FB2). It can be.

The power input terminal (VIN, No. 1) of the driver 300 is connected to the line where the drain terminal of the NMOS transistor (Q1) and one side (No. 5) of the contact terminal of the relay switch 100 are connected, and the ground terminal (GND , No. 4) is connected to the ground line (N), the gate output terminal (Gate, No. 3) is connected to the gate terminal of the NMOS transistor (Q1) included in the charging unit 200, and the reset signal terminal (ReSetn, 5 B) may be connected to the switch control unit 400 and the switching power supply unit 500.

At this time, when a preset voltage level, for example, a reset signal of '+3.3V' is applied to the reset signal terminal (ReSetn, No. 5), the driving unit 300 starts driving the charging unit 200 to charge the charging unit 200. It can operate to generate a PWM control signal for turning on/off at high speed according to a preset duty ratio.

The switch control unit 400 controls whether the driving unit 300 is driven and the on/off operation of the relay switch 100 based on a command signal from a user regarding whether power is supplied to the load X.

As shown in FIG. 2B, the switch control unit 400 is connected to the relay switch 100, the driving unit 300, and the switching power supply unit 500, respectively, to determine whether the driving unit 300 is driven and to turn on and off the relay switch 100. It may include a plurality of switch control circuits (U6, U7, and U8) for controlling, and a pin header (P1) in which the input/output ports of each circuit are arranged into one to facilitate connection with other elements.

Here, the first switch control circuit (U6) is set to the coil terminal (No. 4-6) of the relay switch (RL1) according to the input of the connection state (L1-DIS, L1-EN) of the power line (L1). It performs an operation of outputting the current value of (OA1, OB1), and the second switch control circuit (U7) relays the switch ( It performs an operation of outputting predetermined current values (OA2, OB2) to the coil terminals (No. 4-6) of RL2, and the third switch control circuit (U8) determines the connection state (L3-) of the power line (L3). Depending on the input to DIS, L3-EN), an operation of outputting a predetermined current value (OA3, OB3) to the coil terminals (No. 4-6) of the relay switch RL3 is performed.

At this time, the terminal (No. 9) of the pin header (P1) for connection of the switch control unit 400 may be connected to the reset signal terminal (ReSetn) of the driving unit 300.

The switch controller 400 includes an input switch 410 connected to the power line L via the relay switch 100 and switched to an on or off state according to a user input.

Specifically, when the input switch 410 is turned on, the switch control unit 400 supplies starting currents OA1 to OA3 and OB1 to OB3 to the coil terminals (4 to 6) inside the relay so that the internal coil 110 ), the relay switch 100 is turned on, and commercial power is supplied to the load (X) by electrical connection between the load (X) and the power line (L) according to the conduction of the relay switch (100). can be supplied.

In addition, when the input switch 410 is switched from an on state to an off state, the switch control unit 400 transfers the electric charges stored in the internal capacitor C1 of the switching power supply unit 500 after the time when the input switch 410 is switched to the off state. It is driven by using, and the driving unit 300 can be controlled to switch the charging unit 200 to an off state.

When the input switch 410 of the switch control unit 400 is in an on state, the switching power supply unit 500 converts the AC voltage of commercial power transmitted through the power line L into a preset DC voltage and outputs the converted AC voltage.

The switching power supply unit 500 performs an operation of charging the internal capacitor C1 using the DC voltage converted according to the DC conversion operation, and charges the internal capacitor C1 when the input switch 410 is off. is supplied as a driving voltage of the switch controller 400.

As shown in FIG. 2B, the switching power supply unit 500 is disposed between the load X and the power line L and is connected in parallel to the contact terminals (No. 5-1) of the relay switch 100, and the driving unit 300 ) and power circuits U3 and U4 connected to the switch control unit 400 and performing an operation of applying a predetermined reset signal to the driving unit 300 or an operation of starting driving the switch control unit 400. .

In this regard, the switching power supply unit 500 includes a bridge diode unit 510, a rectification unit 520, a power conversion unit 530, a charging circuit unit 540, an output unit 560, and a feedback unit as shown in FIG. 2A. A circuit unit 550 may be included.

The bridge diode unit 510 full-wave rectifies the AC voltage of the commercial power applied to the input terminal and converts it into a DC voltage.

The bridge diode unit 510 may include a pair of bridge diodes BD1 and BD2 in which four diodes are connected in a bridge structure, and the input terminals of each bridge diode are relay switches RL1, RL2 and RL3 and a power line. (L1, L2, L3) can be connected on the line connected.

For example, referring to FIG. 2A, one side of the input terminal of the first bridge diode BD1 is connected to ground (GND) and the other side of the input terminal is connected to the line where the third power line L3 and the third relay switch RL3 are connected. Both sides of the input terminal of the second bridge diode BD2 are connected to the first power line L1 and the second power line L2, respectively, and both sides of the output terminals of the first and second bridge diodes BD1 and BD2 are respectively connected to the first power line L1 and the second power line L2. It may be connected to the final output terminal of the switching power supply unit 500 in a state of being connected in parallel with each other.

At this time, a thermistor (VR1) may be provided on both sides of the output terminal of the bridge diode unit 510 to suppress the initial inrush current.

The rectifier 520 removes and smoothes the ripple of the DC voltage full-wave rectified by the bridge diode unit 510 .

The rectifier 520 includes a capacitor C2 connected in parallel to the bridge diode unit 510 and a resistor R1 connected in series between one end of the output terminal of the first bridge diode BD1 and one end of the capacitor C2. can do.

The power conversion unit 530 includes a transformer T1 that, when the DC voltage smoothed by the rectifying unit 520 is applied to the primary side, boosts or reduces the DC voltage to a preset target voltage and outputs it to the secondary or tertiary side.

The charging circuit unit 540 charges using the secondary side output voltage of the transformer T1.

When the input switch 410 of the switch control unit 400 is in an on state, the charging circuit unit 540 converts the DC voltage into a preset target voltage by the transformer T1 and outputs the DC voltage output to the secondary side (Nos. 8-7). An internal capacitor C1 for charging and a diode D1 for preventing the reverse flow of charges accumulated in the capacitor C1 toward the transformer T1 may be included.

The output unit 560 detects the output voltage of the tertiary side of the transformer T1 and selectively blocks the output of the voltage applied to the output terminal according to a result of comparing the detected output voltage with a preset overvoltage threshold.

The output unit 560 is connected in series to a photo coupler circuit U1 that senses the output voltage of the tertiary side (No. 1-2) of the transformer T1 and one side (No. 2) of the input terminal of the photo coupler circuit U1. A Zener diode (ZD1) maintaining a constant voltage, a resistor (R2) connected in parallel to both sides (No. 1-2) of the input terminal of the photocoupler circuit (U1), and one side (No. 2) of the input terminal of the photocoupler circuit (U1) It may include a resistor (R4) connected in series between and one end of the resistor (R2).

Here, the photo coupler circuit U1 is composed of an infrared light emitting diode (No. 1-2) serving as a light emitting element and a phototransistor (No. 3-4) serving as a light receiving element, and between circuits having different ground potentials. Used for signal transmission.

The feedback circuit unit 550 stabilizes the output of the transformer T1 by feeding back the feedback voltage FB based on the output voltage Vcc sensed by the output unit 560 to the primary side of the transformer T1.

The feedback circuit unit 550 is connected to the input and output terminals of the transformer T1 and feeds back the detection result of the output voltage of the tertiary side (Nos. 1-2) to the primary side (Nos. 4-3) to adjust the level of the input voltage. Accordingly, it may include a feedback control circuit (U2) that finally performs an operation of stabilizing the output voltage.

Here, the feedback control circuit U2 has a drain terminal (DRAIN, No. 4) and an output voltage terminal (No. 4) connected to the primary side (No. 4-3) and the tertiary side (No. 1-2) of the transformer T1, respectively. VCC, No. 3) and a feedback voltage terminal (FB, No. 2), and the output voltage terminal (V _CC ) and the feedback voltage terminal (FB) are the output terminals (Nos. 4 and 3) of the photocoupler circuit U1, respectively. can be connected to each.

In this case, the feedback circuit unit 550 includes a diode D2 and a resistor R3 connected between the output voltage terminal VCC and the tertiary side of the transformer T1, and the output voltage terminal VCC and the ground terminal GND2. A polarity capacitor (C3) connected therebetween, a capacitor (C4) connected between the feedback voltage terminal (FB) and the ground terminal (GND2), and a resistor (R6) connected in parallel to the capacitor (C4) are further included. can do.

Accordingly, according to the present invention described above, a circuit design combining a control circuit that allows a power supply path to be formed differently according to a switch state with respect to a conventional mechanical switch wiring circuit provides a touch type, remote control type or voice recognition, etc. It is possible to implement an electronic switch structure capable of power control in various ways, so that efficiency and convenience can be improved without the burden of additional construction costs on the user.

Above, the present invention has been described in detail through preferred embodiments, but the present invention is not limited thereto and may be variously practiced within the scope of the claims.

In particular, the foregoing has described rather broadly the features and technical advantages of the present invention in order to better understand the claims of the invention to be described later, so that the concept and specific embodiments of the present invention described above are intended to serve similar purposes to the present invention. It should be recognized by those skilled in the art that it can be readily used as a basis for designing or modifying other shapes for the purpose.

In addition, the embodiment described above is only one embodiment according to the present invention, and can be implemented in various modified and changed forms within the scope of the technical idea of the present invention by those skilled in the art. You will understand. Therefore, the disclosed embodiments should be considered from an explanatory point of view rather than a limiting point of view, and these various modifications and changes are also shown in the claims of the present invention described above as belonging to the scope of the technical idea of the present invention, and the scope equivalent thereto. Any differences within them should be construed as being included in the present invention.

30: load 100: relay switch
110: internal coil 200: charging unit
300: driving unit 400: switch control unit
410: input switch 500: switching power unit
510: bridge diode unit 520: rectification unit
530: power conversion unit 540: charging circuit unit
550: feedback circuit unit 560: output unit

Claims (5)

Switching operation according to the strength of the magnetic field generated in the internal coil placed between the load inside the building connected to the ground line of the building and driven depending on whether or not power is supplied and the power line of the building receiving external commercial power and delivering it to the load relay switch;
a charger disposed between the relay switch and the front end of the power line to charge the commercial power through an on/off operation;
a driving unit for driving the charging unit on/off according to a preset duty ratio; and
An input switch connected to the power line via the relay switch and turned on or off according to a user input is included, so that when the input switch is turned on, the internal coil of the relay switch is energized so that the relay switch and a switch controller configured to switch to an on state and to supply the commercial power to the load by an electrical connection between the load and the power line according to conduction of the relay switch. According to claim 1,
a switching power supply unit configured to convert the AC voltage of the commercial power supplied through the power line when the input switch is in an on state and output the converted DC voltage to a predetermined DC voltage, and to charge an internal capacitor using the converted DC voltage; A hybrid light switch device further comprising a. According to claim 2,
The switch control unit,
When the input switch is switched from the on state to the off state, after the time when the input switch is switched to the off state, it is driven by using the charge stored in the internal capacitor of the switching power supply unit, and the driving unit is configured to switch the charging unit to the off state. Hybrid switch control device, characterized in that for controlling. According to claim 2,
The switching power supply unit,
a bridge diode unit for full-wave rectifying the AC voltage of the commercial power applied to the input terminal and converting it into a DC voltage;
a rectifier for smoothing by removing the ripple of the full-wave rectified DC voltage;
a power conversion unit including a transformer that boosts or reduces the smoothed direct current voltage to a predetermined target voltage when applied to a primary side and outputs the voltage to a secondary side or a tertiary side;
a charging circuit unit charging the internal capacitor using the secondary side output voltage of the transformer;
an output unit that detects the output voltage of the tertiary side of the transformer and selectively cuts off the output of the voltage applied to the output terminal according to a result of comparing the detected output voltage with a preset overvoltage threshold; and
and a feedback circuit unit for stabilizing the output of the transformer by feeding back a feedback voltage based on the sensed output voltage to the primary side of the transformer. According to claim 1,
The relay switch,
A hybrid light switch device comprising a latching relay switch that maintains the on state until a predetermined reset signal is generated when it is switched to an on state due to a magnetic field initially generated in the internal coil after operation starts or initialization.

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