KR20190128323A - Standby power saving SMPS - Google Patents

Abstract

The present invention relates to a standby power saving switching mode power supply (SMPS) for reducing standby power consumed during dimming 0% control. According to the present invention, the standby power saving SMPS comprises: a main SMPS supplying power to an LED module when an object is detected from an object detection sensor so as to control the LED module to be a preset first brightness; and a micro SMPS integratedly formed with the main SMPS and, if the object is not detected from the object detection sensor or brightness of the LED module is 0%, supplying power to the LED module so as to always operate the LED module and supply standby power for operating the object detection sensor.

Description

Standby power saving SMPS {Standby power saving SMPS}

The present invention relates to a standby power saving SMPS, and more particularly, to a standby power saving SMPS for reducing standby power consumed when dimming 0% control.

In general, the luminaire installed indoors is connected to the on-off switch, so that the luminaire can be turned on or off by manually operating the on-off switch.

On the other hand, these lighting fixtures are very inconvenient because the on-off switch must be manually operated according to the brightness of the room, and to keep the brightness of the room continuously above the desired brightness, the lighting fixtures should always be turned on. As a result, power consumption is extremely problematic.

In order to solve the inconvenience of manual operation and excessive power consumption, a luminaire has been developed that automatically dimmes the illuminance of the space where the luminaire is installed to match the preset illuminance. LED lighting fixtures are commonly used.

In order to control the LED luminaire, a switching mode power supply (SMPS) having high efficiency and small capacity compared to non-switching power is used as a power supply device. The SMPS maintains its operation for power supply even in the standby mode, in which the home appliance does not perform its original function, thereby consuming a considerable amount of power even in the standby mode.

In other words, the dimmable LED luminaire does not send output through SMPS when it is controlled to 0% dimming, but it consumes 2 ~ 3W of basic driving power, and consumes a lot of energy in the space where many lights are installed. there was.

Korea Patent Registration No. 10-1035026 (2011.05.09.)

Accordingly, an object of the present invention is to provide a standby power saving SMPS that can reduce energy consumption by reducing standby power consumed when dimming 0% control in a dimmable LED luminaire.

The standby power saving SMPS according to the present invention is formed integrally with the main SMPS, the main SMPS to supply power to the LED module when the object is detected from the object detection sensor, so that the LED module is controlled to a predetermined first brightness, the object detection When no object is detected from the sensor or the brightness of the LED module is 0%, the micro SMPS supplies power to the LED module to always drive the LED module and supplies standby power for driving the object detection sensor. It includes.

The standby power saving SMPS according to the present invention cuts off the power supplied from the main SMPS when controlling the brightness of the LED module to 0%, and the minimum required for waiting for signal input of the dimming control module from the micro SMPS built into the main SMPS. By only supplying power, the standby power consumed at the time of control to dimming 0% can be reduced to reduce energy consumption.

In addition, when the standby power saving SMPS according to the present invention detects an object through an object detection sensor, by gradually controlling the brightness of the LED module according to the time when the object is not detected by controlling the brightness to 0%, to reduce energy consumption Can be.

In addition, the standby power saving SMPS according to the present invention cuts off the power supplied from the main SMPS when controlling to 0% dimming, and supplies only the minimum power required for waiting for signal input of the dimming control module from the micro SMPS built into the main SMPS. In addition, it determines whether it is daytime or nighttime, and when nighttime is low, receives only standby power for driving the object sensor from the micro SMPS and cuts off the power applied to the LED module to reduce energy consumption. You can.

1 is a view showing the configuration of a dimmable energy-saving LED lighting fixture according to an embodiment of the present invention.
2 is a view showing the configuration of a dimming control module according to an embodiment of the present invention.
3 is a view showing a control method of a dimmable power saving type LED lighting device according to an embodiment of the present invention.

In the following description, only parts necessary for understanding the embodiments of the present invention will be described, it should be noted that the description of other parts will be omitted so as not to distract from the gist of the present invention.

The terms or words used in the specification and claims described below should not be construed as being limited to the ordinary or dictionary meanings, and the inventors are appropriate to the concept of terms in order to explain their invention in the best way. It should be interpreted as meanings and concepts in accordance with the technical spirit of the present invention based on the principle that it can be defined. Therefore, the embodiments described in the present specification and the configuration shown in the drawings are only preferred embodiments of the present invention, and do not represent all of the technical idea of the present invention, and various equivalents may be substituted for them at the time of the present application. It should be understood that there may be variations and variations.

Hereinafter, with reference to the accompanying drawings will be described in detail an embodiment of the present invention.

1 is a view showing the configuration of a dimmable energy-saving LED lighting fixture according to an embodiment of the present invention.

Referring to FIG. 1, a dimmable power saving LED lighting device according to an embodiment of the present invention includes a main SMPS 10, a micro SMPS 20, an object detecting sensor 40, an LED module 50, and a dimming control module 30. ).

The main SMPS 10 supplies power to the dimming control module 30 when the dimming brightness of the LED module 50 is 1 to 100%. The main SMPS 10 may rectify and smooth the input commercial power (AC 220V) and make a predetermined DC voltage required by the dimming control module 30 to supply main power.

Although not shown, the main SMPS 10 includes a DC-DC converter for converting a DC input voltage obtained from an AC input power through an input rectifying smoothing circuit to a DC output voltage, a feedback control circuit for stabilizing an output voltage, overvoltage, and overcurrent. And a protection circuit. The feedback control circuit may include an error amplifier for amplifying the error of the output voltage, a comparator for generating a driving pulse by comparing the triangular wave of the amplified error, a driving circuit for driving the main switch of the DC-DC converter, and the like. The DC-DC converter may be composed of a main switch, a reflux diode, and an LC filter which is a low pass filter.

When the main SMPS 10 controls the dimming brightness of the LED module 50 to 1 to 100% by the dimming control module 30, the main SMPS 10 supplies power to the dimming control module 30 at all times, and the dimming brightness is 0%. In the case of the control, the power supply is cut off by the dimming control module 30.

The micro SMPS 20 may be embedded in the main SMPS 10. The micro SMPS 20 may rectify and smooth commercial power with a small switched mode power supply (SMPS), and then supply a small amount of power required for the dimming control module 30 to the dimming control module 30 when it is ready. . For example, the micro SMPS 20 may use a flyback SMPS having a small capacity and high power efficiency.

Here, the micro SMPS 20 may supply only the minimum power that can directly drive the LED module 50 to the dimming control module 30.

The object detecting sensor 40 is built in the LED module 50 or is provided around the LED module 50 to detect an object around the LED module 50. That is, the object detecting sensor 40 may support driving the LED module 50 only when an object is detected around the LED module 50. The object detecting sensor 40 may detect a moving object such as a person or a vehicle entering a predetermined distance from the LED module and transmit a detection signal to the dimming control module 30. For example, the object detection sensor 40 may be an infrared sensor, a motion sensor, a microwave sensor and the like.

The LED module 50 may include an LED lamp to emit light. The LED module 50 may output brightness between 0 and 100% according to the control signal of the dimming control module 30. LED module 50 according to an embodiment of the present invention, when the object is detected from the object sensor 40 by the control of the dimming control module 30, outputs the light at a first brightness, the time when the object is not detected When the preset time is exceeded, light may be output at a preset second brightness that is darker than the first brightness. In addition, the LED module 50 may not output light when the time for which the object is not detected exceeds a preset time after outputting the light at the second brightness under the control of the dimming control module 30.

The dimming control module 30 may receive power for dimming the LED module 50 from the main SMPS.

In addition, the dimming control module 30 may be supplied with standby power for directly dimming the LED module 50 from the micro SMPS. Here, the dimming control module 30 may drive the LED module 50 at all times, and may receive a minimum power source capable of driving the object detection sensor 40 from the micro SMPS.

In addition, the dimming control module 30 may receive the object detection signal from the object detection sensor 40 and drive the LED module 50. Here, the dimming control module 30 may control the brightness of the LED module through PWM control of the power supplied from the main SMPS 10.

When the object is detected from the object detection sensor 40, the dimming control module 30 may receive power from the main SMPS 10 to control the LED module 50 to a predetermined first brightness. For example, the first brightness may be 100% dimming. That is, the dimming control module 30 controls the LED module 50 with the maximum brightness when the object detection sensor 40 detects an object such as a person or a car around the LED module 50, thereby controlling the LED module 50. ) Can emit light.

In addition, the dimming control module 30 receives power from the main SMPS 10 when the time for which the object is not detected from the object detecting sensor 40 exceeds the preset time after controlling to the first brightness. ) May be controlled to a preset second brightness that is darker than the first brightness. That is, when the dimming control module 30 determines that the object is out of a certain range through the detection time of the object detecting sensor 40 after the control at the first brightness, the dimming control module 30 controls the second brightness darker than the first brightness to consume unnecessary energy. Can be reduced. Here, the dimming control module 30 may control the LED module 50 to gradually lighten from the first brightness to emit light at the second brightness.

In addition, the dimming control module 30 may control the brightness of the LED module 50 by 0% when the time when the object is not detected from the object sensor 40 exceeds a preset time after controlling to the second brightness. .

Here, the dimming control module 30 may control the brightness of the LED module 50 to 0%, cut off the power supplied from the main SMPS 10, and receive standby power from the micro SMPS 20. Here, standby power is the minimum power for driving the LED module 50 at all times and driving the object detecting sensor 40.

For example, when the dimming control module 30 controls the brightness of the LED module 50 to 0%, the main driving power of 2 to 3W is used to dimm the LED module 50 at any time when dimming is required. From 10).

Accordingly, when the dimming control module 30 controls the brightness of the LED module 50 to 0%, the dimming control module 30 cuts off the power supplied from the main SMPS 10 and waits from the micro SMPS 20 supplying a small amount of power. When the power is applied, when the brightness of the LED module 50 is controlled by 0%, standby power may be reduced to 0.5W or less.

In addition, the dimming control module 30 determines whether the current is day or night after receiving standby power from the micro SMPS 20. Here, the dimming control module 30 is a micro SMPS (20) only for the power to drive the object detection sensor 40 when the time at which the object is not detected from the object detection sensor 40 exceeds the preset time when the current night. ) And the power applied to the LED module 50 is cut off.

That is, since the dimming control module 30 uses the LED module 50 less than the daytime when night, the standby power for dimming the LED module 50 at any time when the LED module 50 is required for dimming. In addition, it can be blocked, and only the object detection sensor 40 to operate.

The dimming control module 30 may control the LED module 50 to the first brightness by receiving power from the main SMPS 10 when an object is detected by the object detecting sensor 40.

Hereinafter, the dimming control module 30 according to an embodiment of the present invention will be described in more detail.

2 is a view showing the configuration of a dimming control module according to an embodiment of the present invention.

1 and 2, the dimming control module 30 according to the embodiment of the present invention includes an input unit 31, a storage unit 33, a power supply unit 35, and a control unit 37.

The input unit 31 may receive an input signal for controlling the LED module 50. The input unit 31 may receive the first brightness and the second brightness of the LED module 50, time to control the second brightness, time to control the LED module 50 to 0%, and micro SMPS 20. Time to cut off the standby power supply). The input unit 31 may be separately provided to receive an input signal for controlling the control unit 37 remotely.

The storage unit 33 may store an application program for controlling the LED module 50, an application program for controlling the power supply of the main SMPS 10, and the micro SMPS 20. In addition, the storage unit 330 may control the first brightness and the second brightness received from the input unit 31, the second brightness, the time of controlling the LED module 50 to 0%, and the standby of the micro SMPS 20. You can save the time when the power supply is turned off.

The power supply unit 35 may receive power from the main SMPS 10 or cut off the power supplied from the main SMPS 10 under the control of the controller 37. In addition, the power supply unit 35 may receive standby power from the micro SMPS 20 or cut off standby power supplied from the micro SMPS 20 under the control of the controller 37. In addition, the power supply unit 35 may supply power controlled by the controller 37 to the LED module 50 according to the brightness of the LED module 50.

When the object is detected by the object detecting sensor 40, the controller 37 controls the power supply unit 35 to receive power from the main SMPS 10 to receive the LED module 50 from the input unit 31. You can control the brightness.

In addition, the controller 37 after the control to the first brightness, if the time the object is not detected from the object sensor 40 exceeds the time received from the input unit 10, through the power supplied from the main SMPS (10) The LED module 50 may be controlled by the second brightness received from the input unit 10.

In addition, the controller 37 may control the brightness of the LED module 50 to 0% if the time when the object is not detected from the object sensor 40 exceeds the time input from the input unit 10 after controlling to the second brightness. Can be controlled.

Here, the control unit 37 controls the brightness of the LED module 50 to 0% and at the same time controls the power supply unit 35 to cut off the power supplied from the main SMPS 10, and standby power from the micro SMPS 20. Can be supplied.

In addition, the controller 37 determines whether the current is day or night after receiving standby power from the micro SMPS 20. For example, the controller 37 may distinguish day and night by time. Here, the controller 37 is the micro SMPS 20 except for the power supplied to the object detecting sensor 40 when the time when the object is not detected from the object detecting sensor 40 exceeds a preset time when it is currently night. Shut off standby power from the unit.

Hereinafter, a control method of a dimmable power saving type LED lighting device according to an embodiment of the present invention will be described.

3 is a view showing a control method of a dimmable power saving type LED lighting device according to an embodiment of the present invention.

Referring to FIG. 3, when an object is detected from an object detection sensor in step S10, the dimming control module may receive power from the main SMPS in step S20 to control the LED module to a predetermined first brightness. For example, the first brightness may be 100% dimming. That is, the dimming control module may control the LED module with the maximum brightness when the object detection sensor detects an object such as a person or a car around the LED module, so that the LED module emits light.

Next, after controlling the dimming control module to the first brightness in step S30, if the time for which the object is not detected from the object detection sensor exceeds a preset time, the dimming control module receives power from the main SMPS to make the LED module darker than the first brightness. Control may be at the set second brightness. That is, after the dimming control module determines that the object is out of a certain range through the detection time of the object detecting sensor after controlling to the first brightness, the dimming control module may control the second brightness darker than the first brightness to reduce unnecessary energy consumption. Here, the dimming control module may control the LED module to dim gradually at the first brightness to emit light at the second brightness.

Next, in step S40, the dimming control module may control 0% of the brightness of the LED module when the time for which the object is not detected from the object detection sensor exceeds the preset time after controlling to the second brightness.

Here, the dimming control module may control the brightness of the LED module to 0%, cut off the power supplied from the main SMPS, and receive standby power from the micro SMPS.

For example, if the dimming control module controls the brightness of the LED module to 0%, the main SMPS receives 2 ~ 3W of basic driving power so that the LED module can be dimmed at any time when dimming is required.

Accordingly, the dimming control module cuts off the power supplied from the main SMPS when controlling the brightness of the LED module to 0% and controls the brightness of the LED module by receiving standby power from the micro SMPS which supplies a small amount of power. The standby power can be reduced to less than 0.5W.

Next, in step S50, the dimming control module determines whether the current is day or night after receiving standby power from the micro SMPS.

The dimming control module cuts the standby power supplied from the micro SMPS except for the power supplied to the object detection sensor when the time at which the object is not detected from the object detection sensor exceeds the preset time in step S60 at night. .

That is, since the dimming control module uses less of the LED module at night than at daytime, the dimming control module can cut off the standby power for dimming the LED module at any time when the LED module is needed for dimming, and only the object detection sensor can operate. have.

If the current week in step S50 can be performed step S40.

As described above, the dimmable power saving type LED lighting device control method according to the embodiment of the present invention cuts off the power supplied from the main SMPS when controlling the brightness of the LED module to 0%, and controls the dimming from the micro SMPS embedded in the main SMPS. By supplying only the minimum power required to wait for the signal input of the module, it is possible to reduce the energy consumption by reducing the standby power consumed when controlling to dimming 0%.

In addition, the dimmable power-saving LED lighting device control method according to an embodiment of the present invention, when the object is detected through the object sensor, the LED module gradually controls the brightness according to the time when the object is not detected, and then control to 0% By doing so, energy consumption can be reduced.

In addition, the dimmable power-saving LED lighting device control method according to an embodiment of the present invention, when dimming 0% control, cut off the power supplied from the main SMPS, and waits for the signal input of the dimming control module from the micro SMPS built into the main SMPS In addition, after receiving only the minimum power required to determine whether it is daytime or nighttime, and in the case of low usage night, only the standby power required to drive the object sensor is received from the micro SMPS, and the power applied to the LED module. By blocking the energy consumption can be reduced.

On the other hand, the embodiments disclosed in the drawings are merely presented specific examples to aid understanding, and are not intended to limit the scope of the invention. It will be apparent to those skilled in the art that other modifications based on the technical idea of the present invention can be carried out in addition to the embodiments disclosed herein.

10: main SMPS 20: micro SMPS
30: dimming control module 31: input unit
33: storage 35: power supply
37: control unit 40: object detection sensor
50: LED module

Claims (1)

A main SMPS for supplying power to the LED module when an object is detected from the object detecting sensor so that the LED module is controlled to a predetermined first brightness;
When the object is not integrated with the main SMPS and an object is not detected from the object detection sensor or the brightness of the LED module is 0%, power is supplied to the LED module to always drive the LED module, and the object detection is performed. Micro SMPS for supplying standby power for driving the sensor;
Standby power saving SMPS comprising a.

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