KR102125208B1 - Led light apparatus using current sensor - Google Patents

Abstract

An LED lighting device using a current sensor according to an embodiment of the present invention includes an LED module, a dimming converter that controls at least one of dimming and dimming of an LED module according to a dimming signal when an AC power is applied, and a non-contact method It includes a control module for sensing the AC current flowing in the conductor of the wall switch for opening and closing the AC power using the current sensor, and generates the dimming signal based on the detected AC current, the wall switch, the wall of the two A switch, the control module, detects the alternating current flowing in the conducting wire of each of the first switch and the second switch among the two wall switches, and the on/off state of the first switch and the second switch based on the sensed alternating current A dimming signal may be generated according to a combination of.

Description

LED lighting device using current sensor{LED LIGHT APPARATUS USING CURRENT SENSOR}

This application relates to an LED lighting device using a current sensor.

LED lamps have advantages such as high brightness, low power consumption, small size, light weight, and long life compared to incandescent or fluorescent lamps. Recently, there has been an increasing demand to use LEDs as lighting devices to replace incandescent or fluorescent lamps.

Accordingly, research and development of the LED lighting device is constantly in progress. In particular, research is being conducted to allow the brightness of the LED light to be adjusted according to a user's selection or a change in indoor illumination, rather than simply turning on/off the LED light.

On the other hand, dimming of a conventional LED light is a system in which a dimming switch, which is a part for adjusting brightness, is provided with a dimming wire separately and connected to a driving unit or a dimming controller of the LED light.

Therefore, in order to add a dimming system to the LED lighting, there is a problem in that a separate device and wiring are installed in the LED lighting, or the LED lighting device must be entirely replaced with a dimmable LED lighting device.

Korean Patent Publication No. 2014-0122045 (“LED lighting device capable of dimming control using a switching pattern”, published date: October 17, 2014)

According to an embodiment of the present invention, there is provided an LED lighting device using a current sensor capable of controlling at least one of dimming and color matching of an LED module without adding a separate device or wiring.

According to an embodiment of the present invention, the LED module; A dimming converter that controls at least one of dimming and dimming of the LED module according to a dimming signal when AC power is applied; It includes; and a control module for detecting the AC current flowing in the conductor of the wall switch for opening and closing the AC power using a non-contact current sensor, and generating the dimming signal based on the detected AC current The wall switch includes two wall switches, and the control module detects an AC current flowing through each of the first and second switches of the two wall switches, and the first based on the detected AC current. An LED lighting device using a current sensor is provided, which generates the dimming signal according to a combination of on/off states of a switch and the second switch.
According to another embodiment of the present invention, the LED module; A dimming converter that controls at least one of dimming and dimming of the LED module according to a dimming signal when AC power is applied; It includes; and a control module for detecting the AC current flowing in the conductor of the wall switch for opening and closing the AC power using a non-contact current sensor, and generating the dimming signal based on the detected AC current The wall switch includes one wall switch, and the control module detects an alternating current flowing through the conductor of the wall switch of the first section, and based on the number of on/off times of the wall switch based on the detected alternating current. An LED lighting device using a current sensor, which generates a dimming signal, is provided.

According to another embodiment of the present invention, the LED module; A dimming converter that controls at least one of dimming and dimming of the LED module according to a dimming signal when AC power is applied; And a control module for sensing an AC current flowing in a conductor of a wall switch for opening and closing the AC power using a non-contact current sensor, and generating the dimming signal based on the detected AC current, wherein the non-contact The current sensor of the method includes at least one of a current sensor of a current transformer type and a current sensor of a Hall element type, and the wall switch includes two or more wall switches, and the control module comprises: the two or more wall switches LED using a current sensor that senses an alternating current flowing in each conductor and generates a dimming signal having a different pulse width according to a combination of on-off states for each of the two or more wall switches based on the sensed alternating current A lighting device is provided.

According to an embodiment of the present invention, by detecting the alternating current flowing in the conductor of the wall switch for opening and closing the AC power using a non-contact current sensor, and generating a dimming signal based on the detected AC current, separate It has the advantage of controlling at least one of dimming and dimming of the LED module without adding a device or wiring.

1A is a block diagram of a three-step dimming control LED lighting device having a two-hole switch and two current sensors according to an embodiment of the present invention.
1B is a block diagram of a dimming or dimming/light control LED lighting device having a two-hole switch and two current sensors according to an embodiment of the present invention.
2A is a block diagram of a three-step dimming control LED lighting device having a one-hole switch and one current sensor according to an embodiment of the present invention.
Figure 2b is a block diagram of a three-step dimming or dimming / dimming control LED lighting device having a one-hole switch and one current sensor according to an embodiment of the present invention.
FIG. 3A is a detailed circuit diagram of a control module included in the LED lighting device for dimming control shown in FIG. 1A.
3B is a waveform diagram of a main part of the LED lighting device for dimming control shown in FIG. 3A.
FIG. 4A is a detailed circuit diagram of the control module included in the color control LED lighting device shown in FIG. 1B.
4B is a waveform diagram of a main part of the LED lighting device for color tone control of FIG. 4A.
FIG. 5A is a detailed circuit diagram of a control module included in the dimming/light control LED lighting apparatus shown in FIG. 1B.
5B is a waveform diagram of a main part of the LED lighting device for dimming/color control of FIG. 5A.
FIG. 6A is a detailed circuit diagram of a control module included in the LED lighting device for dimming control shown in FIG. 2A.
6B is a waveform diagram of a main part of the LED lighting device for dimming control shown in FIG. 6A.
FIG. 7A is a detailed circuit diagram of the control module included in the LED lighting device for color control shown in FIG. 2B.
7B is a waveform diagram of a main part of the LED lighting device for color tone control of FIG. 7A.
8A is a detailed circuit diagram of a control module included in the LED lighting device for dimming/color control shown in FIG. 2B.
FIG. 8B is a waveform diagram of main parts of the LED lighting device for dimming/color control of FIG. 8A.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. However, the embodiments of the present invention may be modified in various other forms, and the scope of the present invention is not limited only to the embodiments described below. The shape and size of elements in the drawings may be exaggerated for clarity, and elements indicated by the same reference numerals in the drawings are the same elements.

1A is a block diagram of a three-step dimming control LED lighting device having a two-hole switch and two current sensors according to an embodiment of the present invention. And, Figure 1b is a block diagram of a dimming or dimming / dimming control LED lighting device having a two-hole switch and two current sensors according to an embodiment of the present invention.

Meanwhile, FIG. 3A is a detailed circuit diagram of a control module included in the LED lighting device for dimming control illustrated in FIG. 1A, and FIG. 3B is a waveform diagram of a main part of the LED lighting device for dimming control illustrated in FIG. 3A. FIG. 4A is a detailed circuit diagram of the control module included in the color control LED lighting device shown in FIG. 1B, and FIG. 4B is a waveform diagram of a main part of the color lighting control LED lighting device of FIG. 4A. FIG. 5A is a detailed circuit diagram of a control module included in the dimming/light control LED illuminating device shown in FIG. 1B, and FIG. 5B is a waveform diagram of a main part of the dimming/light control LED lighting device of FIG. 5A.

1A, 1B, and 3A to 5B are all applied to a three-step dimming control LED lighting device having a two-hole switch and two current sensors, and FIGS. 1A and 3A are three-step dimming control LED lighting devices 1B and 4A are applied to the LED lighting device for 3-step dimming control, and FIGS. 1B and 5A can be applied to the LED lighting device for 3-step dimming/light control.

First, as shown in Figures 1a and 1b, the LED lighting device 100 for three-step dimming control using two current sensors 41 and two-way switch 31 according to an embodiment of the present invention, LED When the AC power supply 1 is applied to the modules 11 and 12, the dimming converter 21 for controlling at least one of dimming and dimming of the LED modules 11 and 12 according to the dimming signals DIM, DIM1 and DIM2 22), using the non-contact current sensor 41 to detect the alternating current flowing in the conductor of the wall switch 31 for opening and closing the AC power supply 1, and based on the detected alternating current, dimming signal (DIM) , DIM1, DIM2) may be configured to include control modules 110 and 120.

According to an embodiment of the present invention, the above-described wall switch 31 is composed of two wall switches SW1 and SW2, and the current sensor module 41 may also be composed of two current sensors CT1 and CT2. have.

In addition, according to an embodiment of the present invention, the LED module 11 of FIG. 1A is composed of a single LED string having one color temperature (eg, 6500K), and the LED module 12 of FIG. 1B is a constant color. It may be composed of a first LED string having a temperature (eg, 6500K) and a second LED string having a different color temperature (eg, 3000K) from the first LED string. It should be noted that the specific values of the above-described color temperature are only for helping the understanding of the invention, and are not limited to the above-described specific values.

In addition, according to an embodiment of the present invention, the dimming converter 21 of FIG. 1A may be a single channel converter having one output, and the dimming converter 22 of FIG. 1B may be two channels having two outputs. It can be a converter. The dimming converters 21 and 22 of FIGS. 1A and 1B may be, for example, buck converters, but are not limited thereto.

The above-described control modules 110 and 120 detect alternating current flowing in the conducting wires of the first switch SW1 and the second switch SW2 among the two wall switches 31, and the first based on the sensed alternating current. Dimming signals DIM, DIM1, and DIM2 may be generated according to a combination of on/off states of the switch SW1 and the second switch SW2.

Specifically, as shown in FIGS. 1A, 1B, 3A, 4A, and 5A, the control modules 110 and 120 flow through the conductors of the first switch SW1 among the two wall switches 31 A second switch among the first sensing module 310 and the two wall switches 31, which sense the current and output the on/off state signal S1 of the first switch SW1 based on the sensed AC current A second sensing module 330 for sensing an alternating current flowing in the conducting wire of (SW2) and outputting an on/off state signal S2 of the second switch SW2 based on the detected alternating current, and a first switch A first generating a first dimming signal DIM1 by comparing the first reference voltage and the triangular wave Stri generated based on the ON/OFF state signals S1 and S2 of the SW1 and the second switch SW1. The dimming signal generation module 320 compares the second reference voltage and the triangular wave Stri generated based on the on/off state signals S1 and S2 of the first switch SW1 and the second switch SW2. The second dimming signal generation module 340 may generate a second dimming signal DIM2.

Meanwhile, the first sensing module 310 described above includes a first current sensor CT1 and a first current sensor for sensing an alternating current flowing in a conducting wire of the first switch SW1 among the two wall switch 31. The first switch (SW1) according to the output voltage of the first rectifying unit (311, 312) and the first rectifying unit (311, 312) for rectifying the AC voltage induced by the alternating current sensed by (CT1) to a DC voltage It may include a first logic circuit 313 for outputting the on / off state signal (S1).

In addition, the above-described second sensing module 330 includes a second current sensor CT2 and a second current sensor for sensing an alternating current flowing in a conducting wire of the second switch SW2 among the two wall switches 31. The second rectifiers 331 and 332 rectify the AC voltage induced by the AC current sensed by (CT2) as a DC voltage, and the second switch SW2 according to the output voltages of the second rectifiers 331 and 332 It may include a second logic circuit 333 for outputting the on / off state signal (S2).

The above-described current sensors CT1 and CT2 are non-contact current sensors, and may include, for example, at least one of a current transformer type current sensor and a Hall element type current sensor.

In addition, the above-described first rectifying unit 311, 312 is composed of four diodes and a rectifying circuit 311 for rectifying the alternating voltage Vac1 induced by the alternating current sensed by the first current sensor CT1. It consists of a smoothing unit 312 for smoothing the rectified AC voltage to a DC voltage (Vc1), the smoothing unit 312 may include a resistor (R1, R2), a Zener diode (ZD1), a smoothing capacitor (C1) have.

Similarly, the above-described second rectifying unit 331, 332 is composed of four diodes and a rectifying circuit 331 for rectifying the alternating voltage Vac2 induced by the alternating current sensed by the second current sensor CT2. It consists of a smoothing unit 332 for smoothing the rectified AC voltage to a DC voltage (Vc2), the smoothing unit 332 may include resistors (R1, R2), Zener diode (ZD1), smoothing capacitor (C1) have.

On the other hand, the above-described first logic circuit 313, one end is connected to the reference voltage (Vcc) through the first pull-up resistor (RP1), the other end is connected to ground, by the output terminal voltage of the first rectifier (312) The first switching element Q1 being turned on and off, one end is connected to the reference voltage Vcc through the second pull-up resistor RP2, the other end is connected to ground, and the first switching element Q1 and the first pull-up resistor It may include a second switching element (Q2) that is turned on and off by the connection voltage of (RP1).

In addition, the above-described second logic circuit 333, one end is connected to the reference voltage (Vcc) through the third pull-up resistor (RP3), the other end is connected to the ground, by the output terminal voltage of the second rectifier 332 The third switching element Q3 being turned on and off, one end is connected to the reference voltage Vcc through the fourth pull-up resistor RP4, the other end is connected to ground, and the third switching element Q3 and the third pull-up resistor A fourth switching element Q4 that is turned on and off by the connection voltage of (RP3) may be included.

Meanwhile, the triangular wave generation circuit 300 includes two resistors R311 and R312 connected in series to the reference voltage Vcc, a feedback resistor R313, an output resistor R314, a capacitor C315, and an OP amplifier. For the sake of simplicity of the invention, detailed operation description of the above-described triangular wave generation circuit 300 is omitted.

The above description is a configuration common to FIGS. 1A, 1B, 3A, 4A, and 5A, and repeated descriptions are omitted below for simplicity of the invention.

Hereinafter, a specific configuration and operation principle will be described according to each embodiment of the LED lighting device having a two-hole switch and two current sensors.

1. First Embodiment-Three-step dimming control (related drawings: FIGS. 1A, 3A, 3B)

The LED lighting device 100 of FIGS. 1A, 3A, and 3B is for three-step dimming control.

Here, the LED module 11 is driven by one of the first dimming signal DIM1, the second dimming signal DIM2, and the third dimming signal DIM3 (DIM) and has one color temperature (for example, 6500K). It can be composed of a single LED string with.

In addition, as shown in FIGS. 1A and 3A, when the first switch SW1 is only turned on, the first dimming has a first duty (eg, 10%) by the first dimming signal generation module 320. When the signal DIM1 is generated and only the second switch SW2 is turned on, the second dimming signal DIM2 having the second duty (for example, 50%) is generated by the second dimming signal generation module 340. Can be generated.

In addition, the control module 110, when the first switch (SW1) and the second switch (SW2) are both turned on, the full duty generation circuit 350 to generate a third dimming signal (DIM3) having a 100% duty It may further include.

Specifically, as illustrated in FIG. 3A, the above-described first dimming signal generation module 320 receives a triangular wave Stri as an inverting terminal and a reference voltage through a first distribution resistor RD1 as a non-inverting terminal. The first comparator (CMP1) to which (Vcc) is input, and one end is connected to the ground and the other end is connected to the non-inverting terminal of the first comparator (CMP1) through the second distribution resistor RD2 connected in series, and the first switch The fifth switching element Q5 is turned on and off according to the ON/OFF state signal S1 of (SW1), and is connected between the non-inverting terminal of the first comparator CMP1 and ground, and the second switch SW2 It may include a sixth switching element (Q6) on / off according to the on / off state signal (S2).

In addition, the above-described second dimming signal generation module 340, the triangular wave (Stri) is input to the inverting terminal, the reference voltage (Vcc) is input through the third distribution resistor (RD3) to the non-inverting terminal The comparator (CMP2), one end is connected to the ground and the other end is connected to the non-inverting terminal of the second comparator (CMP2) through a fourth distribution resistor (RD4) connected in series, the on/off state of the second switch (SW2) Connected between the seventh switching element Q7 turned on and off according to the signal S2 and the non-inverting terminal and the ground terminal of the second comparator CMP2, and the on/off state signal S1 of the first switch SW1 ) May include an eighth switching element Q8 that is turned on and off.

On the other hand, the full-duty generating circuit 350 described above, one end is connected to the reference voltage (Vcc) through the fifth pull-up resistor (RP5), the other end is connected to the ninth switching element (Q9), and one end is Sixth switching connected to the reference voltage Vcc through the pull-up resistor RP6, the other end connected to ground, and switched on and off by the connection voltage between the ninth switching element Q9 and the fifth pull-up resistor RP5 The element Q10 and the anode are connected to the base of the ninth switching element Q9, and the cathode is connected to the first diode D1 connected to the connection portion between the second switching element Q2 and the second pull-up resistor RP2. , The anode may be connected to the base of the ninth switching element Q9, and the cathode may include a second diode D2 connected to the connection portion of the fourth switching element Q4 and the fourth pull-up resistor RP4. Unexplained reference numeral RP7 is a pull-up resistor.

Meanwhile, the output terminal circuit 360 has one end connected to the reference voltage Vcc through the pull-up resistor R351 and the other end connected to ground, the first comparator CMP1, the second comparator CMP2, and the full duty generating circuit The first output switching element Qo1 that is turned on and off by any one of the outputs of 350, one end is connected to the reference voltage Vcc through the pull-up resistor R352, the other end is connected to ground, and the pull-up resistor R351 ) And a second output switching element Qo2 that is turned on and off by a connection voltage between the first output switching element Qo1.

Meanwhile, reference numerals 321 and 341 not described in FIG. 3A are RC filters composed of a resistor and a capacitor, reference numeral 370 is a constant voltage circuit composed of a capacitor and a zener diode, and reference numerals R322 and R342 are resistors.

Hereinafter, the operation of the first embodiment of the present invention will be described with reference to FIGS. 1A and 3A to 3B.

First, it is assumed that only the first switch SW1 is turned on.

The first current sensor CT1 senses AC alternating current flowing in the conducting wire of the first switch SW1, and the AC voltage Vac1 induced by the alternating current sensed by the first current sensor CT1 is the first rectifying unit. It is rectified to the DC voltage (Vc1) by (311, 312). Accordingly, the first switching element Q1 may be turned on, and the second switching element Q2 may be turned off. On the other hand, the third switching element Q3 is turned off, and accordingly, the fourth switching element Q4 may be turned on.

Meanwhile, the fifth switching element Q5 is turned on according to the on/off signal S1 of the first switch SW1, while the sixth switching element Q6 is the on/off signal of the second switch SW2 ( It may be turned off according to S2).

Accordingly, a first reference voltage is generated by voltage distribution of the first distribution resistor RD1 and the second distribution resistor RD2, and the generated first reference voltage is input to the non-inverting terminal of the first comparator CMP1. Can.

Meanwhile, the first reference voltage is compared with the triangular wave Stri generated by the triangular wave generation circuit 300, and the first dimming signal DIM1 having the first duty may be output. The first output switching element Qo1 and the second output switching element Qo2 are turned on and off by the first dimming signal DIM1 to output the dimming signal DIM.

Here, the first duty may be, for example, 10%, which may be determined by voltage distribution by the resistance value of the first distribution resistor RD1 and the resistance value of the second distribution resistor RD2.

On the other hand, since the eighth switching element Q8 is turned on according to the on/off signal S1 of the first switch SW1, a voltage of 0V is input to the non-inverting terminal of the second comparator CMP2, and thus 2 The output DIM2 of the comparator CMP2 may be low ('0').

Next, it is assumed that only the second switch SW2 is turned on.

The second current sensor CT2 senses AC alternating current flowing in the conducting wire of the second switch SW2, and the AC voltage Vac2 induced by the alternating current sensed by the second current sensor CT2 is the second rectifying unit It is rectified by the direct current voltage (Vc2) by (331, 332). Accordingly, the third switching element Q3 may be turned on, and the fourth switching element Q4 may be turned off. On the other hand, the first switching element Q1 is turned off, and accordingly, the second switching element Q2 may be turned on.

The seventh switching element Q7 is turned on according to the on/off signal S2 of the second switch SW2, while the eighth switching element Q8 is the on/off signal S1 of the first switch SW1. It can be turned off according to.

Accordingly, the second reference voltage is generated by the voltage distribution of the third distribution resistor RD3 and the fourth distribution resistor RD4, and the generated second reference voltage is input to the non-inverting terminal of the second comparator CMP2. Can.

The input second reference voltage is compared with the triangular wave Stri generated by the triangular wave generation circuit 300 and a second dimming signal DIM2 having a second duty may be output. The first output switching element Qo1 and the second output switching element Qo2 are turned on and off by the second dimming signal DIM2 to output the dimming signal DIM.

Here, the second duty may be, for example, 50%, which may be determined by voltage distribution based on the resistance value of the third distribution resistor RD3 and the resistance value of the fourth distribution resistor RD4.

On the other hand, since the sixth switching element Q6 is turned on according to the on/off signal S2 of the second switch SW2, a voltage of 0 V is input to the non-inverting terminal of the first comparator CMP1, and thus 1 The output DIM1 of the comparator CMP1 may be low ('0').

Meanwhile, according to the full duty generation circuit 350, when at least one of the second switching element Q2 or the fourth switching element Q4 is turned on, the first diode D1 or the second diode D2 is turned on. . Accordingly, the ninth switching element Q9 is turned off, the tenth switching element Q10 is turned on, and the third dimming signal DIM3 becomes low ('0').

Next, it is assumed that both the first switch SW1 and the second switch SW2 are turned on.

The first switching element Q1 and the third switching element Q3 are turned on, the second switching element Q2 and the fourth switching element Q4 are turned off, and accordingly the sixth switching element Q6 and the eighth Since the switching element Q8 is turned on, the outputs of the first comparator CMP1 and the second comparator CMP2 are both low ('0').

In the full duty generation circuit 350, the ninth switching element Q9 is turned on, and accordingly, the tenth switching element Q10 is turned off, so that the third dimming signal DIM3 has a reference voltage Vcc (high). do. As a result, since the first output switching element Qo1 is turned on and the second output switching element Qo2 is turned off, a dimming signal DIM having a duty of 100% can be generated.

The above contents are summarized in Table 1 below. Here, the PWM frequency may be the frequency of the dimming signal, that is, the frequency of the triangular wave (Stri).

division DIM PWM frequency SW1 turn on 10% 4KHz SW2 turn on 50% 4KHz SW1 and SW2 turn-on 100% 4KHz

On the other hand, Figure 3b is a main part waveform diagram of the LED lighting device for dimming control shown in Figure 3a, SW1 is the turn-on of the first switch, SW2 is the turn-on of the second switch, Vac1 is the alternating current induced by the first current sensor (CT1) The voltage, Vc1 is the DC voltage of the capacitor C1 of the first rectifying circuit 312, Vac2 is the AC voltage induced by the second current sensor CT2, Vc2 is the capacitor C1 of the second rectifying circuit 332 DC voltage, DIM of the dimming signal, LED represents the output of the LED module 11, the first waveform (A) of the LED output by the first duty (10%), the second waveform (B) the second duty The output by (50%), and the third waveform (C) shows the output by 100% duty. That is, as can be seen from the last LED waveform, it can be seen that only the brightness of the LED module 11 is adjusted by the duty.

2. The second embodiment-three-step color control (related drawings: FIGS. 1B, 4A, 4B)

The LED lighting device 100 of FIGS. 1B, 4A, and 4B is for three-step color control.

Here, the LED module 12 is a first LED string driven by the first dimming signal DIM1 and a second LED driven by the second dimming signal DIM2 and having a different color temperature from the first LED string. It can be composed of strings.

In addition, as shown in FIGS. 1B and 4A, when only the first switch SW1 is turned on, the second dimming signal DIM2 having a full duty of 100% is generated by the second dimming signal generating module 440. When only the second switch SW1 is turned on, the first dimming signal DIM1 having a full duty of 100% is generated by the first dimming signal generation module 420, and the first switch SW1 and When both the switches SW2 are turned on, the first dimming signal DIM1 having the first duty by the first dimming signal generating module 430 and the second duty by the second dimming signal generating module 440 The second dimming signal DIM2 is generated to control color matching.

Specifically, as illustrated in FIG. 4A, the above-described first dimming signal generation module 420 is input with a triangular wave (Stri) as an inverting terminal and a reference through a first distribution resistor (RD1) as a non-inverting terminal. The first comparator CMP1 to which the voltage Vcc is input, and one end is connected to the ground and the other end is connected to the non-inverting terminal of the first comparator CMP1 through the second distribution resistor RD2 connected in series. The fifth switching element Q5 is turned on and off according to the on/off state signal S1 of the switch SW1, and is connected between the non-inverting terminal of the first comparator CMP1 and ground, and the third switching element Q3 ) And a sixth switching element Q6 that is turned on and off by the connection voltage of the third pull-up resistor RP3.

In addition, the above-described second dimming signal generation module 440, the triangular wave (Stri) is input to the inverting terminal, the second voltage is input to the non-inverting terminal through the third distribution resistor (RD3) a reference voltage (Vcc) The comparator (CMP2), one end is connected to the ground and the other end is connected to the non-inverting terminal of the second comparator (CMP2) through a fourth distribution resistor RD4 connected in series, the on/off state of the second switch (SW2) The seventh switching element Q7 is turned on and off according to the signal S2, and is connected between the non-inverting terminal of the second comparator CMP2 and ground, and the first switching element Q1 and the first pull-up resistor RP1 It may include an eighth switching element (Q8) turned on and off by the connection voltage of the.

Meanwhile, the first output terminal circuit 430 has one end connected to the reference voltage Vcc through the pull-up resistor R432, the other end connected to ground, and the first dimming signal DIM1 of the first comparator CMP1. The first output switching element Qo1 that is turned on and off, one end is connected to the reference voltage Vcc through the pull-up resistor R433, the other end is connected to ground, the pull-up resistor R432 and the first output switching element Qo1 It may include a second output switching element (Qo2) that is turned on and off by the connection voltage between. A capacitor C435 is connected between the second output switching element Q2 and the connection portion of the resistor R433 and ground, and the resistor R431 and the resistor R434 are distribution resistors.

The second output terminal circuit 450 has one end connected to the reference voltage Vcc through the pull-up resistor R452, the other end connected to ground, and turned on and off by the second dimming signal DIM2 of the second comparator CMP2. The third output switching element (Qo3), one end is connected to the reference voltage (Vcc) through a pull-up resistor (R453), the other end is connected to ground, between the pull-up resistor (R452) and the third output switching element (Qo3) It may include a fourth output switching element (Qo4) that is turned on and off by the connection voltage. A capacitor C455 is connected between the connection of the fourth output switching element Qo4 and the resistor R453 and ground, and the resistor R451 and the resistor R454 are distribution resistors.

Meanwhile, reference numerals 421 and 441 not described in FIG. 3A are RC filters composed of a resistor and a capacitor, and reference numeral 370 is a constant voltage circuit composed of a capacitor and a zener diode.

Hereinafter, the operation of the second embodiment of the present invention will be described with reference to FIGS. 1B and 4A to 4B.

First, it is assumed that only the first switch SW1 is turned on.

Accordingly, the first switching element Q1 may be turned on, and the second switching element Q2 may be turned off. On the other hand, the third switching element Q3 is turned off, and the fourth switching element Q4 can be turned on.

As the third switching element Q3 is turned off, the sixth switching element Q6 is turned on, and as the sixth switching element Q6 is turned on, the first reference voltage of 0V is non-inverted by the first comparator CMP1. The first dimming signal DIM1, which is input to the terminal and is the output of the first comparator CMP1, may be low ('0').

In addition, as the first switching element Q1 is turned on, the eighth switching element Q8 is turned off, and the seventh switching element Q7 is also turned according to the on/off signal S2 of the second switch SW2. Can be turned off. As the seventh switching element Q7 is turned off, the reference voltage Vcc is input to the non-inverting terminal of the second comparator CMP2, and the second dimming signal having 100% full duty from the second comparator COM2 (DIM2) may be generated. The third output switching element Qo3 and the fourth output switching element Qo4 are turned on and off by the second dimming signal DIM2 to output the second dimming signal DIM2 having 100% full duty. .

Next, it is assumed that only the second switch SW2 is turned on.

In this case, the third switching element Q3 may be turned on, and the fourth switching element Q4 may be turned off. On the other hand, the first switching element Q1 is turned off, and accordingly, the second switching element Q2 may be turned on.

Meanwhile, since the connection voltage of the first switching element Q1 and the first pull-up resistor RP1 becomes the reference voltage Vcc as the first switching element Q1 is turned off, the eighth switching element Q8 is turned on. When the eighth switching element Q8 is turned on, a second reference voltage of 0V is input to the non-inverting terminal of the second comparator CMP2, and accordingly, the second dimming signal that is the output of the second comparator CMP2 ( DIM2) may be low ('0').

On the other hand, since the connection voltage of the third switching element Q3 and the third pull-up resistor RP3 is 0V, the sixth switching element Q6 is turned off, and the on/off signal S1 of the first switch SW1 is turned on. Accordingly, the fifth switching element Q5 may also be turned off. As the fifth switching element Q5 is turned off, the reference voltage Vcc is input to the non-inverting terminal of the first comparator CMP1, and the first dimming signal having 100% full duty from the first comparator COM1 (DIM1) may be generated. The first dimming signal DIM1 may turn on and off the first output switching element Qo1 and the second output switching element Qo2 to output the first dimming signal DIM1 having 100% full duty. .

Next, it is assumed that both the first switch SW1 and the second switch SW2 are turned on.

The first switching element Q1 and the third switching element Q3 are turned on, the second switching element Q2 and the fourth switching element Q4 are turned off, and accordingly the fifth switching element Q5 and the seventh The switching element Q7 is turned on, and the sixth switching element Q6 and the eighth switching element Q8 are turned off.

As the fifth switching element Q5 is turned on, a first reference voltage is generated by voltage distribution of the first distribution resistor RD1 and the second distribution resistor RD2, and the generated first reference voltage is the first comparator It can be input to the non-inverting terminal of (CMP1).

The input first reference voltage may be compared with the triangular wave Stri generated by the triangular wave generation circuit 300 to generate a first dimming signal DIM1 having a first duty. The first dimming signal DIM1 may turn on and off the first output switching element Qo1 and the second output switching element Qo2 to output the first dimming signal DIM1.

Here, the first duty may be, for example, 40%, which may be determined by voltage distribution based on the resistance value of the first distribution resistor RD1 and the resistance value of the second distribution resistor RD2.

On the other hand, as the seventh switching element Q7 is turned on, the second reference voltage is generated by the voltage distribution of the third distribution resistor RD3 and the fourth distribution resistor RD4, and the generated second reference voltage is 2 It can be input to the non-inverting terminal of the comparator (CMP2).

The input second reference voltage may be compared with the triangular wave Stri generated by the triangular wave generation circuit 300 to generate a second dimming signal DIM2 having a second duty. The second dimming signal DIM2 may be output by turning on and off the third output switching element Qo3 and the fourth output switching element Qo4 by the second dimming signal DIM2.

Here, the second duty may be, for example, 60%, which may be determined by voltage distribution by the resistance value of the third distribution resistor RD3 and the resistance value of the fourth distribution resistor RD4.

The above contents are summarized in Table 2 below. Here, the PWM frequency may be the frequency of the dimming signal, that is, the frequency of the triangular wave (Stri).

division DIM PWM frequency SW1 turn on DIM2 100% 4KHz SW2 turn-on DIM1 100% 4KHz SW1 and SW2 turn-on DIM1 40% DIM2 60% 4KHz

Meanwhile, FIG. 4B is a waveform diagram of the main part of the LED lighting device for dimming control shown in FIG. 4A, where SW1 is the turn-on of the first switch, SW2 is the turn-on of the second switch, and Vac1 is the AC induced by the first current sensor CT1 The voltage, Vc1 is the DC voltage of the capacitor C1 of the first rectifying circuit 312, Vac2 is the AC voltage induced by the second current sensor CT2, Vc2 is the capacitor C1 of the second rectifying circuit 332 DC voltage of DIM1 is the first dimming signal, DIM2 is the second dimming signal, LED is the output of the LED module 12, and the first waveform (A) of the LED is white as the output of the second dimming signal (DIM2). B, the second waveform (B) is the output color by the first dimming signal (DIM1), and the third waveform (C) is the composite color by the output by the first dimming signal (DIM1) and the second dimming signal (DIM2). Indicates. That is, as can be seen from the last LED waveform, it can be seen that the color adjustment of the LED module 11 is controlled by the first dimming signal and the second dimming signal.

3. Third Embodiment-Three-step dimming/color control (related drawings: FIGS. 1B, 5A, 5B)

The LED lighting device 100 of FIGS. 1B, 5A, and 5B is for three-step dimming/color control.

Similarly, the LED module 12 includes a first LED string driven by the first dimming signal DIM1 and a second LED driven by the second dimming signal DIM2 and having a different color temperature from the first LED string. It can be composed of strings.

In addition, as shown in FIGS. 1B and 5A, when only the first switch SW1 is turned on, the first dimming signal DIM1 and the second dimming having the first duty by the first dimming signal generation module 520 are shown. The second dimming signal DIM2 having the second duty is generated by the signal generating module 540, and when the second switch SW2 is turned on, the third duty 50 is generated by the second dimming signal generating module 540. %), a second dimming signal DIM2 may be generated.

In addition, the control module 110, when the first switch (SW1) and the second switch (SW2) are both turned on, a full duty generating circuit (550) for generating a first dimming signal (DIM1) having a 100% duty It may further include.

Specifically, as illustrated in FIG. 5A, the first dimming signal generation module 520 is input with a triangular wave Stri as an inverting terminal, and a reference voltage Vcc through a first distribution resistor RD1 as a non-inverting terminal. ) Is input to the first comparator COM1, one end is connected to the ground and the other end is connected to the non-inverting terminal of the first comparator CMP1 through the second distribution resistor RD2 connected in series, and the first switch SW1 ) Is connected between the fifth switching element (Q5) is turned on and off according to the on / off state signal, the non-inverting terminal of the first comparator (CMP1) and the ground terminal, the on / off state of the second switch (SW2) It may include a sixth switching element (Q6) that is turned on and off according to the signal (S2).

In addition, the second dimming signal generating module 540 is a second comparator (CMP2) to which a triangular wave is input to the inverting terminal, and a reference voltage (Vcc) is input through a third distribution resistor (RD3) to the non-inverting terminal, One end is connected to the ground and the other end is connected to the non-inverting terminal of the second comparator (CMP2) through the fourth distribution resistor RD4 connected in series, according to the on/off state signal S2 of the second switch SW2 It is connected to the inverting terminal of the second comparator CMP2 through the seventh switching element Q7 that is turned on and off, and the fifth distribution resistor RD5, to the on/off state signal S1 of the first switch SW1. Accordingly, the eighth switching element Q8 is turned on and off, and is connected between the non-inverting terminal of the second comparator CMP2 and ground, and is turned on and off by the output signal Full of the full duty generation circuit 550 It may include a switching element (Q11).

On the other hand, the above-described full duty generation circuit 550, one end is connected to the reference voltage (Vcc) through the fifth pull-up resistor (RP5), the other end is connected to the ninth switching element (Q9), and one end is Sixth switching connected to the reference voltage Vcc through the pull-up resistor RP6, the other end connected to ground, and switched on and off by the connection voltage between the ninth switching element Q9 and the fifth pull-up resistor RP5 The element Q10 and the anode are connected to the base of the ninth switching element Q9, and the cathode is connected to the first diode D1 connected to the connection portion between the second switching element Q2 and the second pull-up resistor RP2. , The anode may be connected to the base of the ninth switching element Q9, and the cathode may include a second diode D2 connected to the connection portion of the fourth switching element Q4 and the fourth pull-up resistor RP4. Reference numeral RP7 is a pull-up resistor.

Meanwhile, the first output terminal circuit 560 has one end connected to the reference voltage Vcc through the pull-up resistor R561, the other end connected to ground, and the first dimming signal DIM1 of the first comparator CMP1. The first output switching element Qo1 being turned on and off, one end is connected to the reference voltage Vcc through the pull-up resistor R562, the other end is connected to ground, the pull-up resistor R561 and the first output switching element Qo1 It may include a second output switching element (Qo2) that is turned on and off by the connection voltage between. A capacitor C575 is connected between the second output switching element Q2 and the connection portion of the resistor R562 and ground, and the resistor R563 and the resistor R564 are distribution resistors.

The second output terminal circuit 450 has one end connected to the reference voltage Vcc through the pull-up resistor R571, the other end connected to ground, and turned on and off by the second dimming signal DIM2 of the second comparator CMP2. The third output switching element (Qo3), one end is connected to the reference voltage (Vcc) through a pull-up resistor (R572), the other end is connected to ground, between the pull-up resistor (R571) and the third output switching element (Qo3) It may include a fourth output switching element (Qo4) that is turned on and off by the connection voltage. A capacitor C575 is connected between the fourth output switching element Qo4 and the connection portion of the resistor R572 and ground, and the resistor R573 and the resistor R574 are distribution resistors.

Meanwhile, reference numerals 521 and 541 not described in FIG. 5A are RC filters composed of resistors and capacitors.

Hereinafter, the operation of the third embodiment of the present invention will be described with reference to FIGS. 1B and 5A to 5B.

First, it is assumed that only the first switch SW1 is turned on.

Accordingly, the first switching element Q1 may be turned on, and the second switching element Q2 may be turned off. On the other hand, the third switching element Q3 is turned off, and the fourth switching element Q4 can be turned on.

As the second switching element Q2 is turned off, the fifth switching element Q5 and the eighth switching element Q8 are turned on, and as the fourth switching element Q4 is turned on, the sixth switching element Q6 and The seventh switching element Q7 may be turned off.

As the sixth switching element Q6 is turned off and the fifth switching element Q5 is turned on, a first reference voltage is generated by voltage distribution of the first distribution resistor RD1 and the second distribution resistor RD2. , The generated first reference voltage may be input to the non-inverting terminal of the first comparator CMP1.

The input first reference voltage may be compared with the triangular wave Stri generated by the triangular wave generation circuit 300 to generate a first dimming signal DIM1 having a first duty. The first dimming signal DIM1 may turn on and off the first output switching element Qo1 and the second output switching element Qo2 to output the first dimming signal DIM.

Here, the first duty may be, for example, 8%, which may be determined by voltage distribution by the resistance value of the first distribution resistor RD1 and the resistance value of the second distribution resistor RD2.

In addition, as the seventh switching element Q7 and the eleventh switching element Q6 are turned off, and the eighth switching element Q8 is turned on, the voltages of the third distribution resistor RD3 and the fifth distribution resistor RD5 are turned on. The second reference voltage is generated by the distribution, and the generated second reference voltage may be input to the non-inverting terminal of the second comparator CMP2.

The input second reference voltage may be compared with the triangular wave Stri generated by the triangular wave generation circuit 300 to generate a second dimming signal DIM2 having a second duty. The second dimming signal DIM2 may be output by turning on and off the third output switching element Qo3 and the fourth output switching element Qo4 by the second dimming signal DIM2.

Here, the second duty may be, for example, 12%, which may be determined by voltage distribution by the resistance value of the third distribution resistor RD3 and the resistance value of the fifth distribution resistor RD5.

Meanwhile, according to the full duty generation circuit 550, when at least one of the second switching element Q2 or the fourth switching element Q4 is turned on, the first diode D1 or the second diode D2 is turned on. . Accordingly, since the ninth switching element Q9 is turned off, the tenth switching element Q10 is turned on so that the third dimming signal DIM3 becomes low ('0'), resulting in the eleventh switching element Q11. Can be turned off.

Next, it is assumed that only the second switch SW2 is turned on.

Accordingly, the third switching element Q3 may be turned on, and the fourth switching element Q4 may be turned off. On the other hand, the first switching element Q1 may be turned off, and the second switching element Q2 may be turned on.

As the fourth switching element Q4 is turned off, the sixth switching element Q6 and the seventh switching element Q7 are turned on, and as the second switching element Q4 is turned on, the fifth switching element Q5 and The eighth switching element Q8 may be turned off.

As the sixth switching element Q6 is turned on, a voltage of 0 V is input to the non-inverting terminal of the first comparator CMP1, and therefore, the output of the first comparator CMP1 becomes 0, and accordingly, the first dimming signal. (DIM1) goes low ('0').

On the other hand, as the seventh switching element Q5 is turned on, a second reference voltage is generated by voltage distribution of the third distribution resistor RD3 and the fourth distribution resistor RD4, and the generated second reference voltage is 2 It can be input to the non-inverting terminal of the comparator (CMP2).

The input second reference voltage may be compared with the triangular wave Stri generated by the triangular wave generation circuit 300 to generate a second dimming signal DIM2 having a second duty. The second dimming signal DIM2 may be output by turning on and off the third output switching element Qo3 and the fourth output switching element Qo4 by the second dimming signal DIM2.

Here, the second duty may be, for example, 50%, which may be determined by voltage distribution based on the resistance value of the third distribution resistor RD3 and the resistance value of the fourth distribution resistor RD4.

Meanwhile, according to the full duty generation circuit 550, when at least one of the second switching element Q2 or the fourth switching element Q4 is turned on, the first diode D1 or the second diode D2 is turned on. . Accordingly, since the ninth switching element Q9 is turned off and the tenth switching element Q10 is turned on, the eleventh switching element Q11 can be turned off.

Next, it is assumed that both the first switch SW1 and the second switch SW2 are turned on.

The first switching element Q1 and the third switching element Q3 may be turned on, and the second switching element Q2 and the fourth switching element Q4 may be turned off.

As the second switching element Q2 and the fourth switching element Q4 are turned off, the fifth switching element Q5, the sixth switching element Q6, the seventh switching element Q7, and the eighth switching element Q8 ) Can be turned on.

As the eleventh switching element Q11 is turned on, a voltage of 0 V is input to the non-inverting terminal of the second comparator CMP2, and thus, the output of the second comparator CMP2 becomes low ('0'). Accordingly, the second dimming signal DIM2 becomes low ('0').

In addition, as the sixth switching element Q6 is turned on, a voltage of 0 V is input to the non-inverting terminal of the first comparator CMP1, so the output of the first comparator CMP1 is low ('0'). , Accordingly, the first dimming signal DIM1 becomes low ('0').

On the other hand, according to the full duty generation circuit 550, as the second switching element Q2 and the fourth switching element Q4 are turned off, the ninth switching element Q9 is turned on, and the tenth switching element Q10 Is turned off. Therefore, the full duty signal FULL having the reference voltage Vcc is input to the first output switching element Qo1 connected to the output of the first comparator CMP1, and the first output switching element Qo1 is turned on and second. Since the output switching element Qo2 is turned off, a dimming signal DIM having a duty of 100% can be output.

The above contents are summarized in Table 3 below. Here, the PWM frequency may be the frequency of the dimming signal, that is, the frequency of the triangular wave (Stri).

division DIM PWM frequency SW1 turn on DIM1 8%
DIM2 12% 4KHz SW2 turn-on DIM2 50% 4KHz SW1 and SW2 turn-on DIM1 100% 4KHz

On the other hand, Figure 5b is a main part waveform diagram of the LED lighting device for dimming control shown in Figure 5a, SW1 is the turn-on of the first switch, SW2 is the turn-on of the second switch, Vac1 is the alternating current induced by the first current sensor (CT1) The voltage, Vc1 is the DC voltage of the capacitor C1 of the first rectifying circuit 312, Vac2 is the AC voltage induced by the second current sensor CT2, Vc2 is the capacitor C1 of the second rectifying circuit 332 DC voltage of, DIM1 is the first dimming signal, DIM2 is the second dimming signal, LED is the output of the LED module 12, the first waveform (A) of the LED is the first dimming signal (DIM1) and the second dimming signal Synthetic color as the output by (DIM2), the second waveform (B) as the output by the second dimming signal (DIM2), and the third waveform (C) as the output by the first dimming signal (DIM1) by white. Indicates. That is, as can be seen from the last LED waveform, it can be seen that the dimming and dimming of the LED module 11 are both controlled by the first dimming signal and the second dimming signal.

Needless to say, the above-described embodiment is expandable in the case of two or more wall switches.

Therefore, the LED lighting device, when the AC module is applied to the AC power supply, the dimming converter for controlling at least one of dimming and dimming of the LED module according to the dimming signal, and a non-contact current sensor to open and close the AC power It includes a control module for sensing the alternating current flowing in the conductor of the wall switch for, and generating a dimming signal based on the detected alternating current, the non-contact type current sensor includes a current transformer type current sensor and a Hall element type current It includes at least one of the sensors, the wall switch includes two or more wall switches, the control module detects an alternating current flowing in each conductor of the two or more wall switches, and the two or more wall switches based on the sensed alternating current. It may be configured to generate dimming signals having different pulse widths according to a combination of on-off states for each.

On the other hand, Figure 2a is a block diagram of a three-level dimming control LED lighting device using one current sensor and one-hole switch according to an embodiment of the present invention, Figure 2b is one current sensor according to an embodiment of the present invention And a block diagram of a three-level dimming and dimming/light control LED lighting device using a 1-hole switch.

Meanwhile, FIG. 6A is a detailed circuit diagram of a control module included in the dimming control LED lighting device shown in FIG. 2A, and FIG. 6B is a waveform diagram of a main part of the dimming control LED lighting device shown in FIG. 6A. 7A is a detailed circuit diagram of the control module included in the color control LED lighting device shown in FIG. 2B, and FIG. 7B is a waveform diagram of a main part of the color control LED lighting device of FIG. 7A. FIG. 8A is a detailed circuit diagram of a control module included in the dimming/light control LED lighting device shown in FIG. 2B, and FIG. 8B is a waveform diagram of a main part of the dimming/light control LED lighting device of FIG. 8A.

2A, 2B and 6A to 8B described above are applied to a three-step dimming control LED lighting device having a one-hole switch and one current sensor. In particular, FIGS. 2A and 6A are three-step dimming control LED lighting Applied to the device, Figures 2b and 7a are applied to the LED lighting device for three-step dimming control, Figures 2b and 8a can be applied to the three-step dimming / dimming control LED lighting device.

First, as shown in Figures 2a and 2b, the LED lighting device 200 for three-step dimming control using one current sensor 42 and one-way switch 32 according to an embodiment of the present invention, LED When the AC power supply 1 is applied to the modules 11 and 12, the dimming converter 21 for controlling at least one of dimming and dimming of the LED modules 11 and 12 according to the dimming signals DIM, DIM1 and DIM2 22) and using the non-contact current sensor 42 to detect the alternating current flowing in the conductor of the wall switch 32 for opening and closing the alternating current power supply 1, and dimming signal DIM based on the detected alternating current , DIM1, DIM2) may be configured to include control modules 310 and 320.

According to an embodiment of the present invention, the above-described wall switch 32 is composed of one wall switch SW, and the current sensor module 42 may also be composed of one current sensor CT.

In addition, according to an embodiment of the present invention, the LED module 11 of FIG. 2A is composed of a single LED string having one color temperature (eg, 6500K), and the LED module 12 of FIG. 2B is a constant color It may be composed of a first LED string having a temperature (eg, 6500K) and a second LED string having a different color temperature (eg, 3000K) from the first LED string. It should be noted that the specific values of the above-described color temperature are only for helping the understanding of the invention, and are not limited to the above-described specific values.

In addition, according to an embodiment of the present invention, the dimming converter 21 of FIG. 2A may be a single channel converter having one output, and the dimming converter 22 of FIG. 2B may be two channels having two outputs. It can be a converter. The dimming converters 21 and 22 of FIGS. 2A and 2B may be, for example, buck converters, but are not limited thereto.

The above-described control modules 310 and 320 sense the AC current flowing in the lead wire of the wall switch 32 of one sphere, and the dimming signal DIM based on the number of on/off times of the wall switch 32 based on the detected AC current. , DIM1, DIM2).

Specifically, as shown in FIGS. 2A, 2B, 6A, 7A, and 8A, the control modules 310 and 320 sense alternating current flowing in the conductor of the wall switch 32 of one sphere, and sensed Based on the logic module output from the detection module 310 and the detection module 310 that outputs a logic signal of a high signal and a low signal counting the number of on/off times of the wall switch 32 of one sphere based on an alternating current. The first reference voltage is generated by comparing the triangular wave (Stri) to generate a first dimming signal (DIM1) based on the first dimming signal generation module 320 and the logic signal output from the sensing module 310 It may include a second dimming signal generation module 340 to generate a second dimming signal (DIM2) by comparing the second reference voltage and the triangular wave (Stri).

The above-described sensing module 310, the current sensor 42 for sensing the alternating current flowing in the lead wire of the wall switch 32 of one sphere, and the alternating voltage induced by the alternating current sensed by the current sensor 42 A rectifying unit 311, 312 rectifying with a DC voltage and a counter circuit unit outputting the number of on/off of the wall switch 32 of one sphere in a logical combination of high signal or low signal according to the output voltage of the rectifying unit 311, 312 (612, 613).

In addition, the above-described counter circuit units 612 and 613 include an input terminal that receives the output voltages of the rectifying units 311 and 312, and a first output terminal that counts and outputs the number of on/off times of the wall switch 32 of one sphere, and It has a second output terminal, the first output terminal is connected to the reference voltage (Vcc) through the first pull-up resistor (RP1), the second output terminal is the reference voltage (Vcc) through the third pull-up resistor (RP3) The counter circuit 612 is connected to, one end is connected to the reference voltage (Vcc) through the second pull-up resistor (RP2), the other end is connected to ground, by the output of the first output terminal of the counter circuit (612) The second switching element Q2 being turned on and off, one end is connected to the reference voltage Vcc through the fourth pull-up resistor RP4, the other end is connected to ground, and the output of the second output terminal of the counter circuit 612 It may include a fourth switching element (Q4) that is turned on and off.

The above-described current sensors CT1 and CT2 are non-contact current sensors, and may include, for example, at least one of a current transformer type current sensor and a Hall element type current sensor.

2A, 2B, 6A, 7A, and 8A are described above, and repeated descriptions are omitted below for the sake of simplicity of the invention.

Hereinafter, a specific configuration and operation principle will be described according to each embodiment of the LED lighting device having a one-hole switch and one current sensor. Basically, except for the fact that the first switching element Q1 of FIGS. 3A, 4A, and 5A is replaced by the counter circuit 612, the configuration and operation principle are the same, and duplicate description is omitted for simplicity of the invention. do.

4. Fourth embodiment-three-step dimming control (related drawings: FIGS. 2A, 6A, 6B)

The LED lighting device 200 of FIGS. 2A, 6A, and 6B is for three-step dimming control.

Here, the LED module 11 is driven by one of the first dimming signal DIM1, the second dimming signal DIM2, and the third dimming signal DIM3 (DIM) and has one color temperature (for example, 6500K). It can be composed of a single LED string with.

Also, as shown in FIGS. 2A and 6A, when the wall switch 32 of one sphere is turned on once, the first dimming signal DIM1 having the first duty is generated by the first dimming signal generation module 320. The second dimming signal DIM2 having the second duty may be generated by the second dimming signal generating module when the wall switch 32 of the first sphere is turned on twice.

In addition, the control module 110 may further include a full duty generation circuit 350 that generates a third dimming signal DIM3 having 100% duty when the wall switch 32 of one sphere is turned on three times. .

The first dimming signal generation module 320, the first comparator (Stri) is input to the inverting terminal, the reference voltage (Vcc) is input through the first distribution resistor (RD1) to the non-inverting terminal ( CMP1), one end is connected to ground and the other end is connected to the non-inverting terminal of the first comparator CMP1 through a second distribution resistor RD2 connected in series, the second switching element Q2 and the second pull-up resistor ( RP2) is connected between the fifth switching element (Q5) that is turned on and off according to the connection voltage between, and the non-inverting terminal and the ground terminal of the first comparator (CMP1), the fourth switching element (Q4) and the fourth pull-up resistor It may include a sixth switching element (Q6) that is turned on and off according to the connection voltage between (RP4).

On the other hand, in the above-described second dimming signal generation module 340, a triangular wave Stri is input to the inverting terminal, and a second reference voltage Vcc is input to the non-inverting terminal through the third distribution resistor RD3. The comparator CMP2, one end is connected to ground and the other end is connected to the non-inverting terminal of the second comparator CMP2 through a fourth distribution resistor RD4 connected in series, the fourth switching element Q4 and the fourth pull-up The seventh switching element Q7 is turned on and off according to the connection voltage between the resistor RP4, and is connected between the non-inverting terminal and the ground terminal of the second comparator CMP2, and the second switching element Q2 and the second An eighth switching element Q8 that is turned on and off according to the voltage of the connection between the pull-up resistor RP2 may be included.

The full-duty generating circuit 350 described above has one end connected to a reference voltage through a fifth pull-up resistor RP5, the other end connected to a ninth switching element Q9, and one end connected to a sixth pull-up resistor RP6 ) Is connected to the reference voltage and the other end is connected to the ground, the tenth switching element (Q10) and the anode is turned on and off by the connection voltage between the ninth switching element (Q9) and the fifth pull-up resistor (RP5) The first diode D1 is connected to the base of the ninth switching element Q9, the cathode is connected to the connection between the second switching element Q2 and the second pull-up resistor RP2, and the anode is the ninth switching element ( Connected to the base of Q9), the cathode may include a second diode D2 connected to the connection portion of the fourth switching element Q4 and the fourth pull-up resistor RP4.

Hereinafter, the operation of the fourth embodiment of the present invention will be described with reference to FIGS. 2A and 6A to 6B.

When the switch SW is turned on and off once, a high (H) is output to the first output terminal of the counter circuit 612 and a low (L) is output to the second output terminal.

On the other hand, when the switch SW is turned on and off twice in succession, a low (L) is output to the first output terminal of the counter circuit 612 and a high (H) is output to the second output terminal.

When the switch SW is turned on and off three times in succession, a high (H) is output to the first output terminal of the counter circuit 612 and a high (H) is output to the second output terminal.

As mentioned above, the above-described counter circuit 612 replaces the first switching element Q1, and then the operation according to the logic signals of the above-described first output terminal and second output terminal is the same as the first embodiment. Since it is the same, detailed description is omitted.

The above contents are summarized in Table 4 below. Here, the PWM frequency may be the frequency of the dimming signal, that is, the frequency of the triangular wave (Stri).

division Counter circuit output DIM PWM frequency SW turn-on 1st output terminal (H)/ 2nd output terminal (L) 10% 4KHz SW turn-on 1st output terminal (L)/ 2nd output terminal (H) 50% 4KHz SW turn-on 1st output terminal (H)/ 2nd output terminal (H) 100% 4KHz

On the other hand, Figure 6b is a main part waveform diagram of the LED lighting device for dimming control shown in Figure 6a, SW is the turn-on of the switch, Vac is the alternating voltage induced by the current sensor (CT), Vc is the capacitor of the rectifier circuit 312 ( DC voltage of C1), output 1 is the output of the first output terminal, output 2 is the output of the second output terminal, DIM is the dimming signal, LED is the output of the LED module 11, and the first waveform (A) of the LED Is the output by the first duty (10%), the second waveform (B) is the output by the second duty (50%), the third waveform (C) is the output by the 100% duty. That is, as can be seen from the last LED waveform, it can be seen that only the brightness of the LED module 11 is adjusted by the duty.

5. Fifth embodiment-three-step color control (related drawings: FIGS. 2B, 7A, 7B)

The LED lighting device 200 of FIGS. 2B, 7A, and 7B is for three-step color control.

Here, the LED module 12 is a first LED string driven by the first dimming signal DIM1 and a second LED driven by the second dimming signal DIM2 and having a different color temperature from the first LED string. It can be composed of strings.

In addition, as shown in FIGS. 2B and 7A, when the wall switch 32 of one sphere is turned on once, the second dimming signal having a full duty of 100% by the second dimming signal generation module 430 ( DIM2) is generated, when the wall switch 32 of the first sphere is turned on twice, the first dimming signal DIM1 having a full duty of 100% is generated by the first dimming signal generating module 420, 1 When the wall switch 32 of the sphere is turned on three times, the first dimming signal DM1 having the first duty by the first dimming signal generating module 430 and the second dimming signal generating module 440 A second dimming signal DIM2 having a duty may be generated.

The first dimming signal generation module 420, the first comparator (Stri) is input to the inverting terminal, the reference voltage (Vcc) is input through the first distribution resistor (RD1) to the non-inverting terminal ( CMP1), one end is connected to the ground and the other end is connected to the non-inverting terminal of the first comparator (CMP1) through a second distribution resistor (RD2) connected in series, the second switching element (Q2) and the second pull-up resistor ( RP2) is connected between the fifth switching element (Q5) that is turned on and off according to the connection voltage between the, and the non-inverting terminal of the first comparator (CMP1) and ground, the output of the second output terminal of the counter circuit 612 It may include a sixth switching element (Q6) that is turned on and off.

Meanwhile, in the second dimming signal generation module 440, a triangular wave is input to the inverting terminal, and a second comparator (CMP2) to which the reference voltage Vcc is input through the third distribution resistor RD3 to the non-inverting terminal. ), one end is connected to the ground, the other end is connected to the non-inverting terminal of the second comparator (CMP2) through the fourth distribution resistor (RD4) connected in series, the fourth switching element (Q4) and the fourth pull-up resistor (RP4) ) Is connected between the non-inverting terminal of the seventh switching element (Q7) and the second comparator (CMP2) on and off according to the connection voltage between, and the output of the first output terminal of the counter circuit 612 It may include an eighth switching element (Q8) that is on and off.

Hereinafter, the operation of the fifth embodiment of the present invention will be described with reference to FIGS. 2B and 7A to 7B.

When the switch SW is turned on and off once, a high (H) is output to the first output terminal of the counter circuit 612 and a low (L) is output to the second output terminal.

On the other hand, when the switch SW is turned on and off twice in succession, a low (L) is output to the first output terminal of the counter circuit 612 and a high (H) is output to the second output terminal.

When the switch SW is turned on and off three times in succession, a high (H) is output to the first output terminal of the counter circuit 612 and a high (H) is output to the second output terminal.

As mentioned above, the above-described counter circuit 612 replaces the first switching element Q1, and the operation according to the logic signals of the above-described first output terminal and second output terminal is the same as in the second embodiment Therefore, detailed description is omitted.

The above contents are summarized in Table 5 below. Here, the PWM frequency may be the frequency of the dimming signal, that is, the frequency of the triangular wave (Stri).

division Counter circuit output DIM PWM frequency SW turn-on 1st output terminal (H)/ 2nd output terminal (L) DIM2 100% 4KHz SW turn-on 1st output terminal (L)/ 2nd output terminal (H) DIM1 100% 4KHz SW turn-on 1st output terminal (H)/ 2nd output terminal (H) DIM1 40%
DIM2 60% 4KHz

On the other hand, Figure 7b is a main part waveform diagram of the LED lighting device for dimming control shown in Figure 7a, SW is the turn-on of the switch, Vac is the AC voltage induced by the current sensor (CT), Vc is the capacitor of the rectifier circuit 312 ( DC voltage of C1), output 1 is the output of the first output terminal, output 2 is the output of the second output terminal, DIM1 is the first dimming signal, DIM2 is the second dimming signal, LED is the output of the LED module 12 The first waveform (A) of the LED is white as the output by the second dimming signal (DIM2), the second waveform (B) is the light bulb color as the output by the first dimming signal (DIM1), and the third waveform (C) Indicates a composite color as an output by the first dimming signal DIM1 and the second dimming signal DIM2. That is, as can be seen from the last LED waveform, it can be seen that the color matching of the LED module 12 is controlled by the first dimming signal and the second dimming signal.

6. Sixth Embodiment-Three-step dimming/color control (related drawings: Figure 2B, Figure 8A, Figure 8B)

The LED lighting device 200 of FIGS. 2B, 8A, and 8B is for three-step dimming/color control.

Here, the LED module 12 is a first LED string driven by the first dimming signal DIM1 and a second LED driven by the second dimming signal DIM2 and having a different color temperature from the first LED string. It can be composed of strings.

In addition, as shown in FIGS. 2B and 8A, when the wall switch 32 of one sphere is turned on once, the first dimming signal DIM1 having the first duty by the first dimming signal generation module 520 is shown. And a second dimming signal DIM2 having a second duty is generated by the second dimming signal generating module 540, and when the wall switch 32 of the first sphere is turned on twice, the second dimming signal generating module 540 ) To generate a second dimming signal DIM2 having a third duty (50%), and the control module 320 is a first switch having 100% duty when the wall switch 32 of one sphere is turned on three times. A full duty generation circuit 550 that generates the dimming signal DIM1 may be further included.

Specifically, the first dimming signal generation module 520 described above is a first comparator through which a triangular wave (Stri) is input to an inverting terminal and a first reference voltage is input through a first distribution resistor (RD1) to a non-inverting terminal. (CMP1), one end is connected to the ground and the other end is connected to the non-inverting terminal of the first comparator (CMP1) through a second distribution resistor (RD2) connected in series, the second switching element (Q2) and the second pull-up resistor The fifth switching element Q5 is turned on and off according to the connection voltage between (RP2), and is connected between the non-inverting terminal and the ground terminal of the first comparator CMP1, and the fourth switching element Q4 and the fourth pull-up A sixth switching element Q6 that is turned on and off according to the connection voltage between the resistors RP4 may be included.

On the other hand, the above-described second dimming signal generation module 540, a triangular wave (Stri) is input to the inverting terminal, a second comparator to which the second reference voltage is input through the third distribution resistor (RD3) to the non-inverting terminal (CMP2), one end is connected to the ground, the other end is connected to the non-inverting terminal of the second comparator (CMP2) through a fourth distribution resistor (RD4) connected in series, the fourth switching element (Q4) and the fourth pull-up resistor Connected to the non-inverting terminal of the second comparator CMP2 through the seventh switching element Q7 which is turned on and off according to the connection voltage between (RP4) and the fifth distribution resistor RD5, and the second switching element Q2 ) And the eighth switching element Q8 that is turned on and off according to the connection voltage between the second pull-up resistor RP2 and the non-inverting terminal of the second comparator CMP2 and the ground, and a full duty generating circuit 550 ) May include an eleventh switching element Q11 that is turned on and off by an output signal.

The full-duty generation circuit 550 described above has a ninth switching element Q9, one end of which is connected to a reference voltage through a fifth pull-up resistor RP5, the other end of which is connected to ground, and one end of which is a sixth pull-up resistor RP6 ) Is connected to the reference voltage and the other end is connected to the ground, the tenth switching element (Q10) is turned on and off by the connection voltage of the ninth switching element (Q9) and the fifth pull-up resistor (RP5), and the anode 9 is connected to the base of the switching element (Q9), the cathode is a first diode (D1) connected to the connection between the second switching element (Q2) and the second pull-up resistor (RP2), and the anode is the ninth switching element (Q9) ), the cathode may include a second diode D2 connected to the connection portion of the fourth switching element Q4 and the fourth pull-up resistor RP4.

Hereinafter, the operation of the sixth embodiment of the present invention will be described with reference to FIGS. 2B and 8A to 8B.

When the switch SW is turned on and off once, a high (H) is output to the first output terminal of the counter circuit 612 and a low (L) is output to the second output terminal.

On the other hand, when the switch SW is turned on and off twice in succession, a low (L) is output to the first output terminal of the counter circuit 612 and a high (H) is output to the second output terminal.

When the switch SW is turned on and off three times in succession, a high (H) is output to the first output terminal of the counter circuit 612 and a high (H) is output to the second output terminal.

As mentioned above, the above-described counter circuit 612 replaces the first switching element Q1, and the operation according to the logic signals of the above-described first output terminal and second output terminal is the same as in the third embodiment Therefore, detailed description is omitted.

The above contents are summarized in Table 6 below. Here, the PWM frequency may be the frequency of the dimming signal, that is, the frequency of the triangular wave (Stri).

division Counter circuit output DIM PWM frequency SW turn-on 1st output terminal (H)/ 2nd output terminal (L) DIM1 8%
DIM2 12% 4KHz SW turn-on 1st output terminal (L)/ 2nd output terminal (H) DIM2 50% 4KHz SW turn-on 1st output terminal (H)/ 2nd output terminal (H) DIM1 100% 4KHz

On the other hand, Figure 8b is a main part waveform diagram of the LED lighting device for dimming control shown in Figure 8a, SW is the turn-on of the switch, Vac is the AC voltage induced by the current sensor (CT), Vc is the capacitor of the rectifier circuit 312 ( DC voltage of C1), output 1 is the output of the first output terminal, output 2 is the output of the second output terminal, DIM1 is the first dimming signal, DIM2 is the second dimming signal, LED is the output of the LED module 12 The first waveform (A) of the LED is a composite color as the output of the first dimming signal (DIM1) and the second dimming signal (DIM2), and the second waveform (B) is the output of the second dimming signal (DIM2). The electric bulb color and the third waveform (C) indicate white as the output by the first dimming signal (DIM1). That is, as can be seen from the last LED waveform, it can be seen that the dimming and dimming of the LED module 12 are controlled by the first dimming signal and the second dimming signal.

As described above, according to an embodiment of the present invention, an AC current flowing in a conductor of a wall switch for opening and closing an AC power is sensed using a non-contact current sensor, and a dimming signal is generated based on the detected AC current. By generating, there is an advantage that can control at least one of dimming and dimming of the LED module without adding a separate device or wiring.

In addition, in describing the present invention,'~ module' may be used in various ways, for example, a processor, program instructions executed by a processor, software module, micro code, computer program product, logic circuit, application specific integrated circuit, firmware And the like.

The present invention is not limited by the above-described embodiment and the accompanying drawings. It is intended to limit the scope of rights by the appended claims, and that various types of substitutions, modifications, and changes can be made without departing from the technical spirit of the present invention as set forth in the claims to those skilled in the art. It will be self-evident.

1: AC power
11, 12: LED module
21, 22: dimming converter
31, 32: wall switch
41, 42: current sensor
100, 200: LED lighting device
110, 120, 320, 320: control module
300: triangle wave generation module
310: first detection module
330: second detection module
320, 420, 520,: first dimming signal generation module
340, 440, 540: second dimming signal generation module

Claims (23)

delete LED module;
A dimming converter that controls at least one of dimming and dimming of the LED module according to a dimming signal when AC power is applied; And
It includes; a control module for detecting an AC current flowing in a conductor of a wall switch for opening and closing the AC power using a non-contact current sensor, and generating the dimming signal based on the detected AC current.
The wall switch includes two wall switches,
The control module,
Among the two wall switches, the AC current flowing in each of the first and second switches is sensed, and the dimming is performed according to a combination of ON/OFF states of the first switch and the second switch based on the sensed AC current. LED lighting device using a current sensor to generate a signal.
According to claim 2,
The control module,
A first sensing module for sensing an alternating current flowing in the conducting wire of the first switch among the two wall switches, and outputting an on/off state signal of the first switch based on the detected alternating current;
A second sensing module which senses an alternating current flowing in the conducting wire of the second switch among the two wall switches, and outputs an on/off state signal of the second switch based on the detected alternating current;
A first dimming signal generation module that generates a first dimming signal by comparing a first reference voltage and a triangular wave generated based on the on/off state signals of the first switch and the second switch; And
A second dimming signal generation module that generates a second dimming signal by comparing the triangular wave with a second reference voltage generated based on the on/off state signals of the first switch and the second switch;
Including, LED lighting device using a current sensor.
According to claim 3,
The first sensing module,
A first current sensor for sensing an alternating current flowing in the conducting wire of the first switch among the two wall switches, and a first rectifying an alternating voltage induced by the alternating current sensed by the first current sensor as a direct current voltage And a first logic circuit outputting an on/off state signal of the first switch according to the output voltage of the rectifying unit and the first rectifying unit,
The second sensing module,
A second current sensor for sensing an alternating current flowing in the conducting wire of the second switch among the two wall switches, and a second rectifying an alternating voltage induced by the alternating current sensed by the second current sensor as a direct current voltage And a second logic circuit outputting an on/off state signal of the second switch according to the output voltage of the rectifying unit and the second rectifying unit.
According to claim 4,
The first logic circuit,
A first switching element having one end connected to a reference voltage through a first pull-up resistor, the other end connected to ground, and turned on and off by the output terminal voltage of the first rectifier; And
A second switching element, one end of which is connected to the reference voltage through a second pull-up resistor, the other end of which is connected to ground, and which is turned on and off by a voltage of a connection between the first switching element and the first pull-up resistor;
Included, The second logic circuit,
A third switching element having one end connected to the reference voltage through a third pull-up resistor, the other end connected to ground, and turned on and off by the output terminal voltage of the second rectifying unit; And
A fourth switching element, one end of which is connected to the reference voltage through a fourth pull-up resistor, the other end of which is connected to ground, and is turned on and off by a voltage of a connection between the third switching element and the third pull-up resistor;
Including, LED lighting device using a current sensor.
The method of claim 5,
The LED module is composed of a single LED string driven by one of the first dimming signal, the second dimming signal, and the third dimming signal, and having one color temperature,
When only the first switch is turned on, the first dimming signal having a first duty is generated by the first dimming signal generation module,
When only the second switch is turned on, the second dimming signal having a second duty is generated by the second dimming signal generating module,
The control module,
A full duty generating circuit that generates the third dimming signal having 100% duty when both the first switch and the second switch are turned on;
Further comprising, LED lighting device using a current sensor.
The method of claim 5,
The LED module is composed of a first LED string driven by the first dimming signal and a second LED string driven by the second dimming signal and having a different color temperature from the first LED string.
When only the first switch is turned on, the second dimming signal having a full duty of 100% is generated by the second dimming signal generation module,
When only the second switch is turned on, the first dimming signal having a full duty of 100% is generated by the first dimming signal generation module,
When both the first switch and the second switch are turned on, a first dimming signal having a first duty by the first dimming signal generating module and a second dimming having a second duty by the second dimming signal generating module LED lighting device using a current sensor, the signal is generated.
The method of claim 5,
The LED module is composed of a first LED string driven by the first dimming signal and a second LED string driven by the second dimming signal and having a different color temperature from the first LED string.
When only the first switch is turned on, the first dimming signal having a first duty is generated by the first dimming signal generating module and the second dimming signal having a second duty is generated by the second dimming signal generating module, ,
When only the second switch is turned on, the second dimming signal having a duty of 50% is generated by the second dimming signal generating module,
The control module,
A full duty generating circuit that generates the first dimming signal having 100% duty when both the first switch and the second switch are turned on;
Further comprising, LED lighting device using a current sensor.
The method of claim 6,
The first dimming signal generation module,
A first comparator through which a triangular wave is input to the inverting terminal and the reference voltage is input to the non-inverting terminal through a first distribution resistor;
A fifth switching element having one end connected to ground and the other end connected to a non-inverting terminal of the first comparator through a second distribution resistor connected in series, and turned on and off according to an on/off state signal of the first switch;
A sixth switching element connected between the non-inverting terminal and the ground terminal of the first comparator and turned on and off according to an on/off state signal of the second switch; And
Including, the second dimming signal generation module,
A second comparator through which a triangular wave is input to the inverting terminal, and the reference voltage is input to a non-inverting terminal through a third distribution resistor;
A seventh switching element having one end connected to ground and the other end connected to the non-inverting terminal of the second comparator through a fourth distribution resistor connected in series, and turned on and off according to an on/off state signal of the second switch; And
It includes; an eighth switching element connected between the non-inverting terminal and the ground terminal of the second comparator and turned on and off according to the on/off state signal of the first switch;
The full duty generation circuit,
A ninth switching element having one end connected to the reference voltage through a fifth pull-up resistor and the other end connected to ground;
A tenth switching element, one end of which is connected to the reference voltage through a sixth pull-up resistor, the other end of which is connected to the ground, and is turned on and off by a connection voltage between the ninth switching element and the fifth pull-up resistor;
An anode connected to a base of the ninth switching element, and a cathode connected to a connection between the second switching element and the second pull-up resistor; And
An anode is connected to the base of the ninth switching element, the cathode comprises a second diode connected to the connection portion of the fourth switching element and the fourth pull-up resistor, LED lighting device using a current sensor.
The method of claim 7,
The first dimming signal generation module,
A first comparator through which a triangular wave is input to the inverting terminal and the reference voltage is input to the non-inverting terminal through a first distribution resistor;
A fifth switching element having one end connected to ground and the other end connected to a non-inverting terminal of the first comparator through a second distribution resistor connected in series, and turned on and off according to an on/off state signal of the first switch;
A sixth switching element connected between the non-inverting terminal of the first comparator and ground, and turned on and off by a voltage of a connection between the third switching element and the third pull-up resistor; And
Including, the second dimming signal generation module,
A second comparator through which a triangular wave is input to the inverting terminal, and the reference voltage is input to a non-inverting terminal through a third distribution resistor;
A seventh switching element having one end connected to ground and the other end connected to the non-inverting terminal of the second comparator through a fourth distribution resistor connected in series, and turned on and off according to an on/off state signal of the second switch; And
An eighth switching element connected between the non-inverting terminal of the second comparator and ground, and turned on and off by a voltage of a connection between the first switching element and the first pull-up resistor;
Including, LED lighting device using a current sensor.
The method of claim 8,
The first dimming signal generation module
A first comparator through which a triangular wave is input to the inverting terminal and the reference voltage is input to the non-inverting terminal through a first distribution resistor;
A fifth switching element having one end connected to ground and the other end connected to a non-inverting terminal of the first comparator through a second distribution resistor connected in series, and turned on and off according to an on/off state signal of the first switch;
A sixth switching element connected between the non-inverting terminal and the ground terminal of the first comparator and turned on and off according to an on/off state signal of the second switch; And
Including, The second dimming signal generation module,
A second comparator through which a triangular wave is input to the inverting terminal, and the reference voltage is input to a non-inverting terminal through a third distribution resistor;
A seventh switching element having one end connected to ground and the other end connected to a non-inverting terminal of the second comparator through a fourth distribution resistor connected in series, and turned on and off according to an on/off state signal of the second switch;
An eighth switching element connected to an inverting terminal of the second comparator through a fifth distribution resistor and turned on and off according to an on/off state signal of the first switch; And
An eleventh switching element connected between the non-inverting terminal of the second comparator and ground, and turned on and off by the output signal of the full duty generating circuit;
Included, The full-duty generation circuit,
A ninth switching element having one end connected to the reference voltage through a fifth pull-up resistor and the other end connected to ground;
A tenth switching element, one end of which is connected to the reference voltage through a sixth pull-up resistor, the other end of which is connected to the ground, and is turned on and off by a voltage of a connecting portion of the ninth switching element and the fifth pull-up resistor;
An anode connected to a base of the ninth switching element, and a cathode connected to a connection between the second switching element and the second pull-up resistor; And
An anode is connected to the base of the ninth switching element, the cathode comprises a second diode connected to the connection portion of the fourth switching element and the fourth pull-up resistor, LED lighting device using a current sensor.
LED module;
A dimming converter that controls at least one of dimming and dimming of the LED module according to a dimming signal when AC power is applied; And
It includes; a control module for detecting an AC current flowing in a conductor of a wall switch for opening and closing the AC power using a non-contact current sensor, and generating the dimming signal based on the detected AC current.
The wall switch includes one wall switch,
The control module,
An LED lighting device using a current sensor, which senses an alternating current flowing in a conductor of the wall switch of the first sphere and generates the dimming signal based on the number of on/off times of the wall switch based on the sensed alternating current.
The method of claim 12,
The control module,
A sensing module configured to sense an alternating current flowing through a lead wire of the wall switch of the first ball and output a logic signal of a high signal and a low signal counting the number of on/off of the wall switch of the first ball based on the detected AC current;
A first dimming signal generation module that generates a first dimming signal by comparing a triangular wave with a first reference voltage generated based on a logic signal output from the sensing module; And
A second dimming signal generation module that generates a second dimming signal by comparing the second reference voltage generated based on the logic signal output from the sense module and the triangular wave;
Including, LED lighting device using a current sensor.
The method of claim 13,
The sensing module,
A current sensor for sensing an alternating current flowing in the conducting wire of the wall switch of the first sphere; a rectifying unit rectifying an alternating voltage induced by the alternating current sensed by the current sensor into a DC voltage, and according to an output voltage of the rectifying unit And a counter circuit for outputting the number of on/off times of the wall switch of the first sphere as a combination of a high signal or a low signal through a first output terminal and a second output terminal.
The method of claim 14,
The counter circuit unit,
It has an input terminal for receiving the output voltage of the rectifier and a first output terminal and a second output terminal for counting and outputting the number of on/off times of the wall switch of the first sphere, wherein the first output terminal has a first pull-up resistor. A counter circuit connected to the reference voltage through the third pull-up resistor;
A second switching element having one end connected to the reference voltage through a second pull-up resistor, the other end connected to ground, and turned on and off by the output of the first output terminal of the counter circuit;
A fourth switching element having one end connected to the reference voltage through a fourth pull-up resistor, the other end connected to ground, and turned on and off by the output of the second output terminal of the counter circuit;
Including, LED lighting device using a current sensor.
The method of claim 15,
The LED module is composed of a single LED string driven by one of the first dimming signal, the second dimming signal, and the third dimming signal, and having one color temperature,
When the wall switch of the first sphere is turned on once, the first dimming signal having a first duty is generated by the first dimming signal generating module,
When the wall switch of the first sphere is turned on twice, the second dimming signal having the second duty is generated by the second dimming signal generating module,
The control module,
A full duty generating circuit that generates the third dimming signal having 100% duty when the wall switch of the first ball is turned on three times;
Further comprising, LED lighting device using a current sensor.
The method of claim 15,
The LED module is composed of a first LED string driven by the first dimming signal and a second LED string driven by the second dimming signal and having a different color temperature from the first LED string.
When the wall switch of the first ball is turned on once, the second dimming signal having a full duty of 100% is generated by the second dimming signal generating module,
When the wall switch of the first sphere is turned on twice, the first dimming signal having a full duty of 100% is generated by the first dimming signal generating module,
When the wall switch of the first sphere is turned on three times, the first dimming signal having the first duty by the first dimming signal generating module and the second dimming signal having the second duty by the second dimming signal generating module are LED lighting device using the generated current sensor.
The method of claim 15,
The LED module is composed of a first LED string driven by the first dimming signal and a second LED string driven by the second dimming signal and having a different color temperature from the first LED string.
When the wall switch of the first sphere is turned on once, the first dimming signal having a first duty by the first dimming signal generating module and the second dimming having a second duty by the second dimming signal generating module Signal is generated,
When the wall switch of the first ball is turned on twice, the second dimming signal having a duty of 50% is generated by the second dimming signal generating module,
The control module,
A full duty generation circuit that generates the first dimming signal having 100% duty when the wall switch of the first sphere is turned on three times;
Further comprising, LED lighting device using a current sensor.
The method of claim 16,
The first dimming signal generation module,
A first comparator through which a triangular wave is input to the inverting terminal and the reference voltage is input to the non-inverting terminal through a first distribution resistor;
One end is connected to the ground and the other end is connected to the non-inverting terminal of the first comparator through a second distribution resistor connected in series, the fifth being turned on and off according to the connection voltage between the second switching element and the second pull-up resistor Switching element;
A sixth switching element connected between the non-inverting terminal and the ground terminal of the first comparator, and turned on and off according to a connection voltage between the fourth switching element and the fourth pull-up resistor; And
Including, the second dimming signal generation module,
A second comparator through which a triangular wave is input to the inverting terminal, and the reference voltage is input to a non-inverting terminal through a third distribution resistor;
One end is connected to the ground and the other end is connected to the non-inverting terminal of the second comparator through a series-connected fourth distribution resistor, and the seventh is turned on and off according to the connection voltage between the fourth switching element and the fourth pull-up resistor Switching element; And
And an eighth switching element connected between the non-inverting terminal and the ground terminal of the second comparator, and turned on and off according to a connection voltage between the second switching element and the second pull-up resistor.
The full duty generation circuit,
A ninth switching element having one end connected to the reference voltage through a fifth pull-up resistor and the other end connected to ground;
A tenth switching element having one end connected to the reference voltage through a sixth pull-up resistor, the other end connected to the ground, and turned on and off by a connection voltage between the ninth switching element and the fifth pull-up resistor;
An anode connected to a base of the ninth switching element, and a cathode connected to a connection between the second switching element and the second pull-up resistor; And
An anode is connected to the base of the ninth switching element, the cathode comprises a second diode connected to the connection portion of the fourth switching element and the fourth pull-up resistor, LED lighting device using a current sensor.
The method of claim 17,
The first dimming signal generation module,
A first comparator through which a triangular wave is input to the inverting terminal and the reference voltage is input to the non-inverting terminal through a first distribution resistor;
One end is connected to the ground and the other end is connected to the non-inverting terminal of the first comparator through a second distribution resistor connected in series, the fifth being turned on and off according to the connection voltage between the fourth switching element and the fourth pull-up resistor Switching element;
A sixth switching element connected between the non-inverting terminal of the first comparator and ground, and turned on and off by the output of the second output terminal of the counter circuit; And
Including, the second dimming signal generation module,
A second comparator through which a triangular wave is input to the inverting terminal, and the reference voltage is input to a non-inverting terminal through a third distribution resistor;
One end is connected to the ground and the other end is connected to the non-inverting terminal of the second comparator through a series-connected fourth distribution resistor, and the seventh is turned on and off according to the connection voltage between the fourth switching element and the fourth pull-up resistor Switching element; And
An eighth switching element connected between the non-inverting terminal of the second comparator and ground, and turned on and off by the output of the first output terminal of the counter circuit;
Including, LED lighting device using a current sensor.
The method of claim 18,
A first comparator through which a triangular wave is input to the inverting terminal and the reference voltage is input to the non-inverting terminal through a first distribution resistor;
One end is connected to the ground and the other end is connected to the non-inverting terminal of the first comparator through a second distribution resistor connected in series, the fifth being turned on and off according to the connection voltage between the second switching element and the second pull-up resistor Switching element;
A sixth switching element connected between the non-inverting terminal and the ground terminal of the first comparator, and turned on and off according to a connection voltage between the fourth switching element and the fourth pull-up resistor; And
Including, the second dimming signal generation module,
A second comparator through which a triangular wave is input to the inverting terminal, and the reference voltage is input to a non-inverting terminal through a third distribution resistor;
One end is connected to the ground and the other end is connected to the non-inverting terminal of the second comparator through a series-connected fourth distribution resistor, and the seventh is turned on and off according to the connection voltage between the fourth switching element and the fourth pull-up resistor Switching element;
An eighth switching element connected to an inverting terminal of the second comparator through a fifth distribution resistor and turned on and off according to a voltage of a connection between the second switching element and the second pull-up resistor; And
An eleventh switching element connected between the non-inverting terminal of the second comparator and ground, and turned on and off by the output signal of the full duty generating circuit;
Including, The full duty generation circuit,
A ninth switching element having one end connected to the reference voltage through a fifth pull-up resistor and the other end connected to ground;
A tenth switching element, one end of which is connected to the reference voltage through a sixth pull-up resistor, the other end of which is connected to the ground, and is turned on and off by a voltage of a connecting portion of the ninth switching element and the fifth pull-up resistor;
An anode connected to a base of the ninth switching element, and a cathode connected to a connection between the second switching element and the second pull-up resistor; And
The anode is connected to the base of the ninth switching element, the cathode comprises a second diode connected to the connection portion of the fourth switching element and the fourth pull-up resistor, LED lighting device using a current sensor.
The method of any one of claims 2 and 12,
The non-contact current sensor,
An LED lighting device using a current sensor, comprising at least one of a current sensor of a current transformer type and a current sensor of a Hall element type.
LED module;
A dimming converter that controls at least one of dimming and dimming of the LED module according to a dimming signal when AC power is applied; And
It includes a control module for detecting the AC current flowing in the conductor of the wall switch for opening and closing the AC power using a non-contact current sensor, and generates the dimming signal based on the detected AC current,
The non-contact type current sensor includes at least one of a current transformer type current sensor and a Hall element type current sensor,
The wall switch includes two or more wall switches,
The control module senses an alternating current flowing in the conducting wire of each of the two or more wall switches, and has a different pulse width according to a combination of on-off states for each of the two or more wall switches based on the sensed alternating current. LED lighting device using a current sensor to generate a dimming signal.

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