KR101796919B1 - Appratus for controlling input power of LED lamp and LED lamp lighting system having it - Google Patents

Abstract

The present invention relates to an LED lighting input power source control device. The present invention relates to an LED lighting device which is connected to an LED lighting and controls an output voltage inputted to a lamp and outputs a DC voltage which fluctuates with time in a standby state which is not electrically connected to the LED illumination, A power supply unit for maintaining and outputting a direct current voltage at the time of the electrically connected load state, an object detecting unit for outputting a detection signal when an object is sensed within the sensing range, and an appropriate voltage range, A controller for receiving an output of the object detection unit and outputting a signal by determining a point of time when a DC voltage input from the power supply unit reaches an appropriate voltage range from a point of time when a detection signal is received from the object detection unit, And when the control unit receives the output signal, Supply unit presents a LED lighting device including a switching type power supply control, which electrically connected to the LED lights.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an LED lighting power supply control apparatus and an LED lighting lighting system having the same,

The present invention relates to an LED lighting input power source control device for controlling a power source signal input to an LED lighting device in a suitable form, and an LED lighting lighting system including the same.

Generally, a plurality of lights are installed in a building. Among these, the parking lot, the staircase, and the entrance are employed in such a manner that the lighting is turned on when an object is detected. When the sensor plays the role of the switch for turning on the light, the inconvenience of finding and turning on the switch is reduced, and the light can be turned on only when a person or an automobile is passing, which is advantageous for energy saving.

In recent years, LED is widely used as a light emitting material having low power and long life in the field of illumination. LED lights with more environmentally friendly properties are rapidly replacing conventional incandescent lamps and fluorescent lamps.

Among the lighting LEDs used in buildings, there is a type driven by direct current. In this case, a direct current supplied by the constant current type converter may be a DC current whose voltage varies with time such as a triangular wave in a standby state, and a voltage is maintained while the sensor senses an object, .

However, in this case, when the voltage at the time when the sensor senses the object is too high or too low, the power is supplied to the lighting too high or too low, and the life of the LED light is lowered due to heat generation, There is a problem that may not even be lit.

Korean Patent No. 10-1344919 (Dec. 18, 2013) Korean Patent No. 10-0965435 (June 15, 2010)

The present invention relates to an LED lighting input power control apparatus and a LED lighting lighting system including the LED lighting input power control apparatus, which can prevent burnout of the LED lighting, prevent abnormal operation, minimize energy loss, present.

The present invention also provides an LED lighting control method for supplying power of a voltage suitable for LED illumination.

Other objects and advantages of the present invention will become apparent to those skilled in the art from the following detailed description.

According to an embodiment of the present invention, there is provided an apparatus for controlling an output voltage to be supplied to a lamp, the apparatus being connected to an LED lighting device and outputting a DC voltage varying with time in a standby state, A power supply unit for maintaining and outputting a DC voltage at the time of the load state electrically connected to the LED illumination, an object detection unit for outputting a detection signal when an object is sensed within the sensing range, and information on an appropriate voltage range A control unit for receiving the output of the power supply unit and the object sensing unit and determining a point of time when the DC voltage input from the power supply unit reaches an appropriate voltage range from the time when the sensing unit receives the sensing signal from the object sensing unit, An output of the control unit and the power supply unit is inputted, When the output signal presents the power LED lighting unit including a switching input, which electrically connected to the LED lights and a power control system.

Here, the DC voltage fluctuating with time may be a triangular wave or a saw tooth file.

The object sensing unit may include an RF sensor.

The control unit may further include a voltage level sensing unit for monitoring a voltage value output from the power supply unit and a voltage level sensing unit for sensing a voltage of the voltage level sensing unit when the voltage input from the voltage level sensing unit is within an appropriate voltage range And an output time determining unit for outputting a signal to the switching unit and waiting for the voltage input from the voltage level sensing unit to fall within an appropriate voltage range outside the proper voltage range and outputting a signal to the switching unit.

Here, the output time determination unit receives the voltage value of the voltage output from the power supply unit from the voltage level sensing unit, and when the sensing signal is input from the voltage detection unit, the output time determination unit determines whether the voltage value is within the proper voltage range An output delay module for waiting for an output to be performed within an appropriate voltage range when the current voltage detected by the voltage range checking module is higher than or lower than an appropriate voltage range; And an output module for allowing an output from the power supply unit to be supplied to the LED illumination.

Also, in order to solve the above problems, the present invention provides an LED lighting control system including an LED lighting and an LED lighting input power control device for controlling an input voltage signal input to the LED lighting.

According to the embodiment of the present invention, it is possible to supply the power of the proper voltage to the LED illumination, thereby preventing burn-out of the LED illumination, preventing abnormal operation, and minimizing energy loss.

The effects of the present invention will be clearly understood and understood by those skilled in the art, either through the specific details described below, or during the course of practicing the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an LED lighting input power control apparatus and an LED lighting lighting management system according to an embodiment of the present invention; FIG.
2 is a block diagram showing a control part employed in the embodiment shown in Fig.
3 is a view showing a waveform output from the power supply unit shown in Fig.
Fig. 4 is a diagram showing an example of waiting for an output in a control unit adopted in the embodiment shown in Fig. 1; Fig.
FIG. 5 is a flowchart showing an operation of the LED illumination input power source control apparatus shown in FIG. 1. FIG.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, It will be possible. The present invention is capable of various modifications and various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an LED lighting input power control apparatus and an LED lighting lighting management system according to an embodiment of the present invention will be described in detail with reference to the drawings. In the present specification, the same reference numerals are assigned to the same components in different embodiments, and the description thereof is replaced with the first explanation.

1 is a block diagram illustrating an LED lighting input power control apparatus and an LED lighting lighting management system according to an embodiment of the present invention.

The LED lighting lighting management system 100 according to the embodiment of the present invention includes an LED illumination unit 20 and an LED illumination power source control unit 10. [

The LED lighting 20 is a generally used lighting fixture, specifically, a lighting used for a place where a lighting is turned on when an object such as a parking lot, a staircase, or a door of a building is detected.

The LED lighting input power source control device 10 generates electric power to be inputted to the LED illumination device 20 and supplies electric power having an appropriate voltage to the LED illumination device 20 and includes a power supply unit 1, 2, a control unit 3, and a switching unit 4. And may further include an operating power source generating unit 5 for operating the object detecting unit 2 and the control unit 3. [

Hereinafter, the configuration of each part will be described in detail with reference to the drawings.

The power supply unit 1 outputs a direct current voltage that fluctuates with time in a standby state that is not electrically connected to the LED illumination unit 20 and a direct current voltage at that point in a load state that is electrically connected to the LED illumination unit 20 And outputs it.

Specifically, the power supply unit 1 is an AC / DC converter that converts AC to DC and outputs the AC. The direct current outputted therefrom has a DC voltage varying with time in the standby state. Examples of this are triangular waves or sawtooth waves. While maintaining the DC voltage value at the time of being connected to the LED light 20 in a load state connected to the LED light 20 and being energized.

In addition, the power supply unit (1) includes an overvoltage / overcurrent protection unit for blocking the circuit when the overvoltage or overcurrent occurs in detail to prevent the components from being burned out, a noise filter unit for removing noise included in the alternating current, DC converter such as a rectifying part for converting a direct current into a direct current, a smoothing part for removing ripples contained in the rectified direct current, and an abnormal protection part for preventing burnout of constituent parts against a short circuit or disconnection on the load side can do.

The power generated and output from the power supply unit 1 may be used to turn on the LED illumination 20 and may be used as a power source used to operate the object detection unit 2 or the control unit 3 by converting the voltage into an appropriate voltage .

As the power supply unit 1, a constant current converter that controls a constant current to be supplied to the load (LED light) can be used.

When the object is detected within the detection range, the object detection unit 2 outputs a detection signal. The water sensor unit 2 may include a sensor, a signal amplification unit, and a signal filter unit. Here, an object can be a moving person, a car, or the like.

When an object is sensed by a sensor constituting the object detecting unit 2, the sensing signal of the sensor is amplified and filtered to output a sensing signal. The accurate detection signal can be outputted through the amplification and filtering process of the detection signal. The output detection signal is input to the control unit 3.

Meanwhile, the sensor can use a radio frequency (RF) sensor. In general, passive infrared (PIR) sensors used in lighting are often affected by weather conditions and can often cause malfunctions, which can adversely affect lamp life and energy consumption. In the case of the RF sensor, the above problem can be solved because the detection accuracy is high.

The control unit 3 receives the power signal from the power supply unit 1 and receives the detection signal from the object detection unit 2 with information on an appropriate voltage range. And outputs a signal to the switching unit 4 when it is determined that the DC voltage input from the power supply unit 1 reaches the appropriate voltage range from the time when a signal is received from the object detection unit 2. [

2 is a block diagram illustrating a control unit employed in the embodiment shown in FIG.

Referring to FIG. 1, the control unit 3 includes a voltage level sensing unit 31 and a output time determination unit 32.

The voltage level sensing unit 31 monitors the voltage level of the voltage signal input from the power supply unit 1. [ Meanwhile, the scale of the voltage signal can be converted and output to the output time determination unit 32.

Specifically, the voltage level sensing unit 31 monitors the level of the triangular wave DC voltage output from the power supply unit 1 to determine which position (including a few volts) of the triangular waveform in which the current voltage is formed .

The voltage level sensing unit 31 generates a signal to be input to the output time determination unit 32. The signal may be a triangular waveform signal whose scale is reduced as an electrical signal obtained from the triangular wave DC voltage input from the power supply unit 1 . It is preferable that the maximum voltage of the triangular waveform whose scale is reduced is smaller than the driving voltage for driving the output time determination unit 32, for example, 5 V or less.

The output time determination unit 32 outputs a signal when the signal input from the voltage level sensing unit 31 is within the proper voltage range at the time when the signal is received from the object detection unit 2, If the voltage is out of the proper voltage range, it waits until it reaches the proper voltage range, and then outputs the signal to the switching unit 4.

The output time determination unit 32 has a reference voltage level set by a program or the like, which is a criterion for determining whether or not the signal input from the voltage level sensing unit 31 falls within the reference voltage level. The reference voltage level may be a value corresponding to the reduced triangular waveform.

The output time determination unit 32 continuously receives from the voltage level sensing unit 31 the value of the voltage output from the current power supply unit 1. If an object detection signal is input from the object detection unit 2 during this time, the voltage value at the time when a signal is received from the object detection unit 2 is compared with the already inputted reference voltage level. If the voltage value is within the range of the reference voltage level, Or an object is detected, and applies an ON signal to the switching unit 4. On the other hand, if the voltage value is out of the range of the reference voltage level, it waits until it reaches the range of the reference voltage level and then applies the ON signal to the switching unit 4. [

To this end, the output time determination unit 32 includes a voltage range determination module 321, a delay time calculation module, and an output module 323.

The voltage range check module 321 checks whether the voltage input from the voltage level detector 31 is within the reference voltage level range when a detection signal is input from the object detection unit 2. [ Thus, it is confirmed whether the voltage input from the power supply unit 1 is within the proper voltage range.

3 is a diagram showing waveforms output from the power supply unit shown in FIG.

As shown in the figure, the LOW voltage of the power supply unit 1 in the sensor standby state is about 23 V, the HIGH voltage of the power supply unit 1 in the sensor standby state is about 54 V, and the appropriate voltage range is 30 V to 45 V I will. In this case, the appropriate voltage range can be set with a slight margin in consideration of the fact that the voltage input to the LED illumination may include a vibration component.

When the sensor detects a human body or an object and the time point at which the output time determination unit 32 applies the ON signal to the switching unit 4 is 42 V, it is determined that the output voltage is within the proper voltage range. Then, when an ON signal is applied to the switching unit 4 through the output module 323, a power of 42 V is supplied to the LED illumination unit 20.

In the output waiting module, when the current voltage determined by the voltage range checking module 321 is higher or lower than the proper voltage range, the output standby module waits until the voltage reaches the proper voltage range.

4 is a diagram showing an example of waiting for an output from the control unit employed in the embodiment shown in Fig.

If an ON signal is applied to the switching unit 4 when the voltage exceeds 45 V, an overcurrent flows to the LED light 20 by an amount exceeded when the LED light 20 is turned on to weaken the durability of the LED light 20 And the durability of the switching element of the switching unit 4 may be weakened.

Therefore, in order to compensate for this problem, when the ON standby signal is applied to the switching unit 4 after waiting for the voltage level to be lower than the reference voltage preset by the program or the like in the output standby module, the overcurrent flows to the LED illumination unit 20 . That is, when the current voltage is monitored by the voltage range checking module and the voltage level is lowered below the reference voltage, the output standby module releases the standby state and transmits a signal to the output module 323 (refer to FIG. 4 (a) ).

In addition, the voltage range checking module 321 monitors in real time that the voltage level in the standby state falls to the lowest level, and waits for the output from the output waiting module until the voltage level in the standby state becomes the lowest level of the reference voltage level The output module 323 may apply an ON signal to the switching section 4 (see Fig. 4 (b)). In this case, it is possible to stably operate the LED light 20 and save energy as much as possible.

The output module 323 outputs an operation signal for turning on the switching unit 4. [ The output module 323 may be an output port connected to the switching unit.

On the other hand, the control unit 3 may further include an output signal blocking module for blocking the output signal and returning the switching unit 4 to its original state after a predetermined time. The control unit 3 may be a microchip or a microcomputer having a signal memory and a central processing unit.

The switching unit 4 receives a signal from the control unit 3 and the power supply unit 1 and electrically connects the power supply unit 1 to the LED light 20 when receiving an operation signal from the control unit 3, 20). Thus, the LED illumination 20 is turned on. The switching unit 4 may include a switching element, and the switching element may be a switching transistor.

The operation power generation unit 5 receives the power from the power supply unit 1 and generates an operation voltage for operating the control unit 3 or the object detection unit 2. [ In many cases, the control unit 3 or the object detection unit 2 is a device that operates at a voltage different from that of the LED illumination 20. [ In this case, a separate power source for operating the control unit 3 and the object detection unit 2 is required. The output operating voltage may be 5V which is suitable for driving a DC sensor or microchip.

When the operating power generating unit 5 is provided, it is not necessary to provide a separate power supply unit because the power of the power supplying unit 1 can be used. As the working power generating unit 5, a transformer element or a transformer circuit can be used.

The lamp input power source control device configured as described above is operated as follows.

5 is a flowchart showing the operation of the lamp input power source control apparatus shown in FIG.

First, DC power of a triangular wave form is supplied from the power supply unit 1 (S10).

Next, the voltage level of the input DC power is monitored (S20), and a signal indicating whether the object is sensed or not is received from the object detection unit 2 (S30).

Next, when the object sensed signal is received, it is determined whether the voltage level of the input DC power source is within an appropriate voltage range (S40).

When the voltage level is within the proper voltage range, the switching unit 4 is turned on so that the power of the power supply unit 1 is supplied to the LED illumination unit 20 (S50).

If the voltage level is outside the proper voltage range, the power supply unit 1 is turned on to supply power to the LED illumination unit 20 by turning on the switching unit 4 (S60). The waiting time can be selected from a point in time that falls within an appropriate voltage range outside the appropriate voltage range or a point at which the voltage falls to the lowest level in the appropriate voltage range.

When the power is supplied to the LED illumination 20, the LED illumination is turned on (S70). The illuminated LED illumination can be turned off after a predetermined period of time when the detection sensor 2 is not receiving a detection signal.

Meanwhile, the voltage value supplied to the LED illumination unit 20 may be monitored to correct the voltage value to an appropriate voltage value if the voltage value is not within the proper voltage range.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

1: Power supply
2:
3:
31: voltage level sensing unit 32: output time determination unit
321: voltage range check module 322: output delay module 323: output module
4:
5:
100: LED lighting management system
10: LED lighting power supply control device 20: LED illumination

Claims (6)

And an output voltage that is connected to the LED light and is input to the lamp,
A power supply unit for outputting a DC voltage varying with time in a standby state that is not electrically connected to the LED illumination and maintaining and outputting a DC voltage at the time of a load state electrically connected to the LED illumination,
An object detection unit that outputs a detection signal when an object is sensed within a sensing range,
A time when a DC voltage input from the power supply unit reaches a proper voltage range from a time when a detection signal is received from the object detection unit is input to the power supply unit and the object detection unit, A control unit for outputting a signal
And a switching unit for receiving the output of the control unit and the power supply unit and electrically connecting the power supply unit to the LED illumination light when the control unit receives the output signal,

Wherein,
A voltage level sensing unit for monitoring the value of the voltage output from the power supply unit;
When the voltage input from the voltage level sensing unit is within an appropriate voltage range at the time of receiving a signal from the object detection unit, the switching unit outputs a signal, and the voltage input from the voltage level sensing unit is in an appropriate voltage range outside the proper voltage range And outputs a signal to the switching unit.
Wherein the LED lighting input power control device includes: The method according to claim 1,
Wherein the DC voltage varying with the time is a triangle wave or a sawtooth wave. The method according to claim 1,
Wherein the object detection unit includes an RF sensor. delete The method according to claim 1,
The output-
A voltage range checking module for receiving a voltage value of a voltage output from the power supply unit from the voltage level sensing unit and checking whether the voltage value is within an appropriate voltage range when a sensing signal is input from the object sensing unit,
An output delay module that waits for an output to be performed within an appropriate voltage range when the current voltage detected by the voltage range checking module is higher than or lower than an appropriate voltage range;
An output module for outputting a signal for operating the switching unit to supply an output from the power supply unit to the LED illumination unit;
Wherein the LED lighting input power control device comprises: LED lighting and
The LED light source power supply control device according to any one of claims 1 to 3, wherein the LED light source power source control device controls an input voltage signal input to the LED light source
And an LED lighting control system.

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