KR100893600B1 - Apparatus and method for regulating the illumination used to the energy saving lamp having automatic dimming function - Google Patents

Abstract

An apparatus and method for regulating illumination is provided to reduce fatigue of eyes and improve lifetime by controlling duty ratio and changing Vrms value. An illuminance automatic control apparatus comprises a sensing part, a controller, and a voltage regulator(200). The sensing part senses man or a vehicles and outputs the sensed signal, the voltage regulator supplies low level power to an electronic stabilizer and supplies high level power to the stabilizer according to the sensed signal. The switching unit controls the level of the power supply voltage inputted to the stabilizer since switching.

Description

Apparatus and method for regulating the illumination used to the energy saving lamp having automatic dimming function}

The present invention relates to an apparatus and method for automatically adjusting the illumination of an energy saving luminaire having an automatic dimming function. An apparatus and method for automatically adjusting the illumination of an energy-saving luminaire having an automatic dimming function having a dimmer for automatically adjusting the illumination.

In general, a conventional luminaire is composed of an electronic ballast and a fluorescent lamp, and receives a commercial AC power source to stabilize the voltage, and rectifies and performs high frequency oscillation again through an inverter, thereby lighting a lamp for a discharge lamp such as a fluorescent lamp.

However, various lamps having an automatic dimming function are known as a method for saving power consumption of such ballasts and discharge lamps.

1 is a block diagram showing a dimming control dimming apparatus of a fluorescent lamp according to the prior art.

First, as shown in Figure 1, the conventional fluorescent lamp illumination control dimming device is a system that implements a dimming method by applying a frequency variable method.

For example, by the 220V 60Hz commercial power supply (Vs), it is configured to drive the dimming dedicated fluorescent ballast 10 and the VDC variable dimmer 20, respectively, at this time the output voltage of DC 0 ~ 10V of the VDC variable dimmer DC voltage is configured to be applied to the inverter drive frequency variable by the input of a separate signal line.

More specifically, the VDC variable dimmer 20 for variable frequency outputs an AC input voltage by varying the DC input voltage to DC 0-10V through the dimmer, and outputs an inverter driving frequency of 45 in a circuit of the dimming-only electronic fluorescent ballast 10. It has a structure that changes the illuminance of the fluorescent lamp 30 while varying to ˜60 kHz.

However, the fluorescent lamp illuminance control device of the prior art has the advantage of good dimming characteristics, but since signal wiring for VDC control must be additionally installed, wiring work must be performed separately, and the price of the dimming electronic fluorescent ballast is high. In addition, the construction cost increases due to individual control for each dimmable electronic fluorescent ballast for each fluorescent lamp, and performance difference between power consumption and illuminance change according to illuminance control according to the ballast design method of the manufacturer making the dimmable electronic fluorescent ballast. Appears, and has a disadvantage of causing various problems when the dimming control of the lamps.

The present invention is to solve the above problems of the prior art, an object of the present invention, a general electronic fluorescent ballast 40, not a dimming dedicated electronic ballast for supplying a constant voltage to the fluorescent lamp 30 (10 of FIG. 1) Is provided, but by sensing the person or vehicle in the sensor 60 to control the energy saving device 50 for the illumination control, to provide another energy-saving fluorescent lamp illumination control device.

That is, the present invention is a localization of the dimming ballast that was dependent on the import through the expensive installation burden and complicated construction in an energy-saving method that varies depending on the place or time as needed, through dimming to maintain the fluorescent lamps of a constant brightness The duty control gate signal is applied to the use of MOSFET, IGBT element, and commercial power sine wave half-cycle, and the output voltage is controlled by duty voltage control. It's about making the functionality workable.

Moreover, despite the dimming control of a large number of general electronic fluorescent ballasts without using expensive dimming ballasts, which depended on imports, the illumination control of the fluorescent lamps can be constantly changed, thus softening the illumination of the light as a whole. In addition to the advantages, it is possible to provide an energy saving fluorescent lamp dimming device that can reduce the size of the electronic ballast.

In order to achieve the object of the present invention, the present invention is a luminaire comprising an illuminance control device and a fluorescent lamp of an energy-saving fluorescent lamp including a dimmer for illuminance control and an electronic ballast for providing a stable voltage to the fluorescent lamp. In the dimmer, the basic idea is to perform voltage control by adjusting the duty width of the commercial power half-cycle sine wave with an electronic switch signal so as to supply the required output voltage to the electronic ballast according to the location and time.

In order to achieve the object of the present invention, an automatic dimming device for an energy saving luminaire having an automatic dimming function according to an aspect of the present invention includes an electronic ballast for supplying a continuous voltage to a fluorescent lamp, A device for automatically adjusting the illuminance of an energy-saving luminaire for controlling the energy saving device for adjusting the illuminance by sensing, the sensing unit 60 (500; 600) for sensing a person or a vehicle; A controller 300 which detects a human body or a vehicle and outputs a detection signal by the sensing unit; And a power having a low level (FIG. 8 f: 90%, g: 75%, h: 50% dimming) is normally applied to the electronic ballast, and then the high level power is generated by the detection signal output from the controller. 8 e: voltage regulator 200 to allow 100% dimming) to be applied to the electronic ballast; It includes, but the voltage regulator normally by limiting a portion of the waveform incident to the ballast 100, so that a low level power is applied to the ballast, while the limiting operation while the detection signal from the controller This pause allows the high level power to be applied to the electronic ballast.

Preferably, the voltage regulator 200, the switching unit 210 for controlling the magnitude of the power supply voltage input to the ballast 100 by switching by the pulse waveform artificial waveform control signal (Vi) and, And a switching controller 220 for activating the switching of the switching unit 210 in response to the detection signal of the human body or the vehicle.

More preferably, the rectifier BD1 is positioned at an input terminal of the voltage regulator 200, and an input terminal of one side of the rectifier is connected in parallel with the ballast, and one side of an output terminal of the rectifier is formed of the switching unit 210. 1 is connected to the switching element Q2, and upon deactivation of the switching control unit 220, a limiting operation of the power applied to the ballast is performed depending on the waveform of the artificial waveform control signal Vi, and the switching adjustment When the unit 220 is activated, the limiting operation is stopped regardless of the waveform of the artificial waveform control signal Vi,

Also preferably, in the switching unit 210, full-wave rectification of the bridge diode BD1 is performed by turning on / off the first switching element Q2, which is switched by the artificial waveform control signal Vi. The waveform of the power supply voltage input to the ballast 100 is characterized in that the limit is made by the pulse width of the artificial waveform control signal (Vi),

More preferably, the first switching element Q2 of the switching unit 210 is the artificial waveform control signal Vi only when the second switching element Q11 of the switching control unit 220 is turned off. The limiting operation is performed in dependence on the waveform, and when the second switching element Q11 of the switching controller 220 is turned on, the limiting operation is stopped regardless of the waveform of the artificial waveform control signal Vi. It is done.

Also, preferably, the sensing unit may include an ultrasonic generator 400 generating ultrasonic waves at a place to be detected by a control signal of the controller 300, and an ultrasonic signal generated by the ultrasonic generator 400. It characterized in that it comprises an ultrasonic sensing unit 500 to inform the control unit;

And an infrared sensing unit 600 which detects infrared rays from the place to be detected and informs the controller.

In order to achieve the object of the present invention, the method of automatically adjusting the illuminance of an energy-saving luminaire having an automatic dimming function according to another aspect of the present invention includes an electronic ballast for supplying a continuous voltage to a fluorescent lamp, A method of illuminance control of an auto-illumination control device of an energy-saving luminaire that senses an energy-saving device for controlling an illuminance, comprising: (a) an artificial waveform control signal having a pulse waveform by the switching unit 210 of the voltage regulator 200; In response to (Vi), adjusting the magnitude of the power supply voltage input to the ballast by performing switching to limit a part of a half cycle of power supplied to the electronic ballast; (b) sensing a person or a vehicle by detecting ultrasonic waves, infrared rays, or both ultrasonic waves and infrared rays from a place to be detected by the ultrasonic sensing unit 500, the infrared sensing unit 600, or both the ultrasonic and infrared sensing units. ; And (c) suspending a limiting operation of the switching unit 210 of the voltage regulator 200 when sensing a person or a vehicle in the step (b); By including, the voltage regulator normally limits a portion of the waveform incident to the ballast 100, so that the low-level power is applied to the ballast, while the detection signal in the step (b) is By allowing the limiting operation to be paused, a high level power is applied to the electronic ballast.

As described above, according to the illumination intensity automatic control device of the energy-saving luminaire having the automatic dimming function according to the present invention, the Vrms value is changed by executing the duty width control, which can greatly improve the efficient use of the electronic fluorescent ballast. In addition, by further softening the illumination control of the fluorescent lamp can greatly reduce eye fatigue, and also improve the life of the fluorescent lamp, it is possible to relatively reduce the size of the electronic fluorescent ballast used for illumination control. In addition, even if the dimming control of several electronic fluorescent ballasts, the flicker phenomenon can be improved when controlling the illuminance of the fluorescent lamp.

Furthermore, by artificially setting the pulse width of the pulse wave of the artificial waveform control signal Vi, it has the additional advantage that the user can artificially specify how much illuminance to be normally maintained.

Other objects and advantages of the present invention in addition to the above object will be apparent from the detailed description of the embodiments with reference to the accompanying drawings.

Hereinafter, described with reference to the accompanying drawings a preferred embodiment of the present invention.

2 is a schematic block diagram showing an energy saving device of a fluorescent lamp according to the present invention, Figure 3 is a detailed block diagram showing an energy saving device of a fluorescent lamp according to the present invention. 4 is a detailed circuit diagram of the controller and the ultrasonic generator of FIG. 3, FIG. 5 is a detailed circuit diagram of the voltage regulator and the reference voltage generator of FIG. 3, FIG. 6 is a detailed circuit diagram of the ultrasonic sensing unit of FIG. 3, and FIG. Detailed circuit diagram of the infrared sensing unit. 8 is a waveform diagram of a rectified voltage of an electronic ballast according to a control signal input.

First, as shown in Figure 2, the fluorescent lamp illuminance control device of the present invention, a general electronic fluorescent ballast 40, not a dimming dedicated electronic ballast (10 of FIG. 1) for supplying a continuous voltage to the fluorescent lamp 30 Is provided, by sensing the person or vehicle in the sensor 60 to control the energy saving device 50 for the illumination control, to provide an energy-saving fluorescent lamp illumination control device.

Referring to FIG. 3 in detail, when the sensing unit 60 including the infrared sensing unit 600 and the ultrasonic sensing unit 500 detects a human body or a vehicle, the control unit 300 of the energy saving device 50 is included. Is to send a signal to the voltage regulator 200, the voltage regulator usually outputs a low voltage output to the ballast 100, when the detection signal of the human body or vehicle from the voltage regulator 200, to send out a high voltage waveform do. More strictly, the voltage regulator normally limits a portion of the waveform incident to the ballast 100 so that a low voltage is input to the ballast, and when a human body or a vehicle is detected, the high voltage waveform is stabilized by stopping the limiting operation. To be entered.

As a result, the dimming control is performed according to whether the human body or the vehicle is detected.

Separately, the controller 300 generates an ultrasonic wave through the ultrasonic generator 400 at a place to be detected. Reference numeral 800 denotes an oscillation unit, and 900 denotes a reset unit.

Now, referring to FIG. 4, the microprocessor U2A of the controller 300 outputs an ultrasonic wave generation signal to the ultrasonic wave generation unit 400 through the ultrasonic wave generation signal output terminal US OUT, and in response thereto, the ultrasonic wave generation unit ( 400 generates ultrasonic waves, for example, about 40 kHz in a predetermined direction through the chip (U1).

Again, when there is a human body or a vehicle, the reflected ultrasonic waves are detected by the chip U3 of the sensing unit 510 of FIG. 6 and then amplified by the amplifying and comparing unit 520. , And detected through the input terminal (US) of FIG.

Similarly, after being sensed by the chip U5 of the sensing unit 610 of FIG. 7, the infrared sensing unit 600 is amplified by the amplifying and comparing unit 720, and through the input terminal PIR of FIG. 3. Is detected.

4 and 5 again, the voltage regulator 200 is switched by an artificial waveform control signal Vi, thereby switching the switching unit 210 for adjusting the magnitude of the power voltage input to the ballast 100. And a switching controller 220 for activating whether the switching unit 210 is switched according to whether a human body or a vehicle is detected.

First, when the human body or the vehicle is not normally detected, the switching controller 220 is in an inactive state, and the artificial control signal Vi is connected to the diode D4 and the resistors R20, R21, and R28 through the connector CN2. Is applied to the gate of the FET Q2 as the switching element of the switching unit 210 (in the solid arrow direction in FIG. 5), and when the artificial control signal Vi is low, the FET Q2 is turned on. Since the bridge diode BD1 is in a normal state, the full wave rectified signal is applied to the ballast 100 (see FIG. 8A).

However, when the artificial control signal Vi is high, since the FET Q2 is turned off, the bridge diode BD1 as the rectifying unit does not operate normally, and the artificial control signal Vi is 'high'. The waveform applied to the ballast 100 during this time is limited (see FIGS. 8B to 8D). If the waveform of the artificial control signal Vi is extremely high (direct current), power may not be applied to the ballast 100 at all.

That is, a bridge diode BD1 as a rectifier is positioned at an input of the voltage regulator 200, and one input terminal of the bridge diode as the rectifier is connected in parallel with the ballast, and one side of an output terminal of the bridge diode as the rectifier is a switching unit ( Connected to the first switching element Q2 of 210, and upon deactivation of the switching control unit 220, a limiting operation of the power applied to the ballast is performed depending on the waveform of the artificial waveform control signal Vi. When the switching controller 220 is activated, the limiting operation is stopped regardless of the waveform of the artificial waveform control signal Vi.

Therefore, the illuminance in the usual manner can be adjusted by the pulse waveform of the artificial control signal Vi according to the place.

Now, when a human body or a vehicle sensing signal is applied from the microprocessor U2A of the controller of FIG. 4 to the base of the transistor Q12 that is a switching element of the switching controller 220 of FIG. Since the transistor Q12 is turned on, the total resistance (Req = (R40 + R42) / R40 · R42) is lowered by the parallel resistance of the voltage divider resistors R40 and R42, so that the transistor Q11, which is a switching element, is turned on. Therefore, the artificial control signal Vi is no longer directly applied to the gate of the FET Q2 as the switching element, but flows to the ground through the transistor Q11 (in the dotted arrow direction in FIG. 5). Therefore, when a human body or a vehicle detection signal is applied to the switching controller 220 from the microprocessor U2A, the FET Q2 is turned on regardless of whether or not the artificial control signal Vi is in the waveform. Intact full-wave rectified power is applied to the 100, and the fluorescent lamp 30 is dimmed to maximum brightness.

Of course, when the detection signal of the human body or the vehicle is no longer applied from the controller 300, the voltage regulator 200 is dimmed to a brightness predetermined by a pulse waveform of the artificial control signal Vi.

Operations of the reference voltage generator 700, the oscillator 800, and the reset unit 900 do not differ significantly from those of a general circuit, and thus detailed descriptions thereof will be omitted.

Now, summarizing the operation of the present invention with reference to Fig. 8, Figs. 8A to 8D are exemplary pulse waveforms of the artificial control signal Vi, and each of the Figs. As a result of switching to the pulse waveform of the artificial control signal Vi, the waveform of the full wave rectified power applied to the ballast 100 is obtained.

It can be seen that limiting is performed by the length of the pulse wave of the pulse waveform of the artificial control signal Vi. Therefore, it can be seen that the Vrms value is changed by executing the duty width control. As a result, it is possible not only to greatly improve the efficient use of the electronic fluorescent ballast, but also to soften the illumination control of the fluorescent lamp to further reduce eye fatigue, and to improve the lifetime of the fluorescent lamp. The size of the electronic fluorescent ballast used can be reduced relatively.

Although the present invention has been described with reference to the drawings in connection with specific embodiments, these are merely exemplary, and those skilled in the art will understand that various modifications and equivalent embodiments thereof are possible. . For example, the switching elements Q1, Q11, and Q12 may be formed by separate switching elements in addition to transistors, and other kinds of transistors may be used. Therefore, the true technical protection scope of the present invention will be defined only by the appended claims.

1 is a block diagram showing a dimming control dimming device of a fluorescent lamp according to the prior art.

2 is a schematic block diagram showing an energy saving device of a fluorescent lamp according to the present invention;

Figure 3 is a detailed block diagram showing the energy saving device of the fluorescent lamp according to the present invention.

4 is a detailed circuit diagram of a control unit and an ultrasonic wave generator of FIG. 3.

FIG. 5 is a detailed circuit diagram of the voltage regulator and reference voltage generator of FIG. 3. FIG.

6 is a detailed circuit diagram of the ultrasonic sensing unit of FIG. 3.

7 is a detailed circuit diagram of the infrared sensing unit of FIG. 3.

8 is a waveform diagram of a rectified voltage of an electronic ballast according to a control signal input.

* Explanation of Signs of Major Parts of Drawings *

30 fluorescent lamp 40 electronic ballast

50: sensor volume 60: sensor volume

100: ballast 200: voltage regulator

210: switching unit 220: switching control unit

300: control unit 400: ultrasonic generator

500: ultrasonic sensing unit 510: detection unit

510: amplification and comparison unit 600: infrared sensing unit

610: detector 620: amplification and comparison unit

700: reference voltage generator 800: oscillator

900 reset unit

Claims (8)

It is equipped with an electronic ballast that supplies a constant voltage to a fluorescent lamp, and it is an automatic dimming device of an energy-saving luminaire that senses a person or a vehicle from a sensor and controls an energy saving device for dimming. Sensing unit 60 (500, 600) for sensing a person or a vehicle; A controller 300 which detects a human body or a vehicle and outputs a detection signal by the sensing unit; And A voltage regulator (200) to allow a low level of power to be applied to the electronic ballast, and to allow a high level of power to be applied to the electronic ballast by the detection signal output from the controller; Including but not limited to: The voltage regulator normally limits a portion of a waveform incident to the ballast 100 so that a low level power is applied to the ballast, and the limiting operation is paused while the detection signal from the controller is received. And an automatic dimming device for an energy saving luminaire having an automatic dimming function, wherein a high level power is applied to the electronic ballast. The method of claim 1, wherein the voltage regulator 200, Switching unit 210 for controlling the magnitude of the power supply voltage input to the ballast 100 by the switching is made by the pulse waveform artificial waveform control signal (Vi), Illumination automatic adjustment device of the energy-saving luminaire having an automatic dimming function, characterized in that it comprises a switching controller 220 for activating the switching of the switching unit in response to the detection signal of the human body or the vehicle. The method of claim 2, A rectifier BD1 is positioned at an input terminal of the voltage regulator 200, and an input terminal of one side of the rectifier is connected in parallel with the ballast, and one side of an output terminal of the rectifier is a first switching element Q2 of the switching unit 210. When the switching control unit 220 is inactivated, a limiting operation of the power applied to the ballast is performed depending on the waveform of the artificial waveform control signal Vi, and the switching control unit 220 When activated, the illumination control device of the energy saving luminaire having an automatic dimming function, characterized in that the limiting operation is stopped irrespective of the waveform of the artificial waveform control signal (Vi). The method of claim 2, The switching unit 210 performs the full-wave rectification of the bridge diode BD1 by turning on / off the first switching element Q2 which is switched by the artificial waveform control signal Vi. 100) is an automatic dimming apparatus for energy saving luminaires with an automatic dimming function, characterized in that the waveform of the power supply voltage input to the limit is limited by the pulse width of the artificial waveform control signal (Vi). The method of claim 4, wherein The first switching device Q2 of the switching unit 210 depends only on the waveform of the artificial waveform control signal Vi only when the second switching device Q11 of the switching controller 220 is turned off. A limiting operation is performed, and when the second switching element Q11 of the switching controller 220 is turned on, the limiting operation is stopped regardless of the waveform of the artificial waveform control signal Vi. Illumination automatic adjustment device of the energy-saving luminaire having a. The method according to any one of claims 1 to 5, wherein the sensing unit, An ultrasonic wave generator 400 generating ultrasonic waves at a place to be detected by a control signal of the controller 300; Illumination automatic adjustment device of the energy-saving luminaire having an automatic dimming function, characterized in that it comprises an ultrasonic sensing unit 500 for detecting the ultrasonic signal generated by the ultrasonic generator 400 to inform the controller. The method according to any one of claims 1 to 5, wherein the sensing unit, Illumination automatic adjustment device of the energy-saving luminaire having an automatic dimming function, characterized in that it comprises an infrared sensing unit 600 to detect the infrared from the place to be detected and inform the control unit. An electronic ballast which supplies a constant voltage to a fluorescent lamp, which is a dimming control method of an automatic dimming device of an energy-saving luminaire that senses a person or a vehicle from a sensor to control an energy saving device for dimming control. (a) By the switching unit 210 of the voltage regulator 200, in response to the pulse waveform artificial waveform control signal Vi, the switching is performed to limit a part of a half cycle of the power supplied to the electronic ballast. Adjusting a magnitude of a power supply voltage input to the ballast; (b) sensing a person or a vehicle by detecting ultrasonic waves, infrared rays, or both ultrasonic waves and infrared rays from a place to be detected by the ultrasonic sensing unit 500, the infrared sensing unit 600, or both the ultrasonic and infrared sensing units. ; And (c) suspending a limiting operation of the switching unit 210 of the voltage regulator 200 when sensing a person or a vehicle in the step (b); By including The voltage regulator normally limits a portion of the waveform incident to the ballast 100 so that a low level power is applied to the ballast, and the limiting operation is temporarily suspended while the sensing signal in step (b) is present. A method of automatically adjusting illuminance of an energy-saving luminaire having an automatic dimming function, wherein the high level power is applied to the electronic ballast.

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