KR101246038B1 - Automatic dimmer for discharge lamp and method thereof - Google Patents

Abstract

PURPOSE: An automatic dimming control device for a discharge lamp and a method thereof are provided to reduce the consumption of start-up time by stably operating the discharge lamp with rated voltages. CONSTITUTION: A main circuit breaker(110) receives prevailing voltages from a load breaker. A rated voltage output device(120) receives the prevailing voltages. The rated voltage output device outputs rated voltages to a switch(102) by boosting or falling the prevailing voltages. A control circuit breaker(130) controls the supply and block of the prevailing voltages. A controller(200) controls a control circuit breaker and the rated voltage output device. [Reference numerals] (100) Automatic dimming control device for a discharge lamp; (120) Rated voltage output device; (200) Controller; (300) Central control terminal; (400) Illuminometer; (AA) LAN cable; (BB) 485 cable

Description

Automatic dimming control device and method for a discharge lamp {AUTOMATIC DIMMER FOR DISCHARGE LAMP AND METHOD THEREOF}

The present invention relates to a lighting control apparatus and method, and more particularly to an automatic dimming control apparatus and method for a discharge lamp.

Recently, the domestic power supply shortage is getting harder, and the power supply companies are also suffering from deficits. Unexpected increases in power consumption can also cause blackouts. For example, a national blackout occurred on September 15, 2011.

In preparation for such a power outage, the Korea Electric Power Exchange and KEPCO operate a five-step emergency response operation plan to increase reserve power in accordance with the "Power System Operation Manual". Step 1 is a mandatory power saving regulation, which mandates a 10% reduction in electricity consumption for high-pressure consumers who use around 1 million kWh, step 2 allows industry designated weekly to save 20%, and step 3 In order to reduce power consumption by reducing the voltage in the uncomfortable use of power, the 4th step cuts off some power from KEPCO, and the 5th step freely reduces the power consumption by contracting with a power-consuming factory. To be.

In this case, reducing the voltage by 2.5% in the third stage saves 1 million kW, and further reducing 5% has the effect of saving 400,000 kW. The third stage is applicable to most all power users, which would be very useful in eliminating power supply shortages if the voltage adjustments are available on a regular basis separate from the power supply company.

In particular, street lights using about 2.7 million discharge lamps are installed nationwide, and consume about 2.79 million MWh of electric energy annually. Reducing the power consumption of discharge lamps by 10% could save about 280,000 MWh per year and reduce the total of 260,000 tons of greenhouse gases annually. This is the amount of power used by about 200,000 households in Korea for one year. Looking more specifically as follows.

1 is a graph showing a change in current, power factor, and power consumption according to a change in voltage.

Referring to Figure 1, the voltage and current, power factor, consumption when the supply voltage is supplied to vary the applied voltage to 220 ~ 150 V to the high-pressure sodium lamp for power consumption 250 W, the rated voltage 220 V which is a kind of discharge lamps commonly used for highway street lights Correlation with power is shown.

(A) of FIG. 1 shows the relationship between voltage and current, (b) shows the relationship between voltage and power factor, and (c) shows the relationship between voltage and power consumption. As shown in Figure 1, it can be seen that the lower the voltage, the lower the power consumption.

The graph of Figure 1 is shown in a table more clearly as follows.

Voltage
[V] electric current
[A] Power factor
[pf] Active power
[W] Reactive power
[var] Apparent power
[VA] By deviation
Savings rate maximum
/at least 220 1.574 -0.9781 305.6 -65.0 312.4 - - 215 1.533 -0.9608 284.4 -82.1 296.0 6.94% 6.94% 210 1.522 -0.9661 273.2 -73.0 282.8 3.94% 10.60% 205 1.501 -0.9596 259.4 -76.1 270.4 5.05% 15.12% 200 1.473 -0.9558 247.0 -76.0 258.4 4.78% 19.18% 195 1.453 -0.9692 237.9 -60.4 245.4 3.68% 22.15% 190 1.416 -0.9700 224.5 -56.3 231.5 5.63% 26.54% 185 1.387 -0.9846 215.7 -38.3 219.0 3.92% 29.42% 180 1.380 -0.9836 203.7 -37.3 207.1 5.56% 33.34% 175 1.393 -0.9881 193.2 -30.0 195.6 5.15% 36.78% 170 1.380 -0.9899 182.2 -26.1 184.1 5.69% 40.38% 165 1.311 -0.9929 172.1 -20.6 173.3 5.54% 43.68% 160 1.234 -0.9948 162.3 -16.6 163.1 5.69% 46.89% 155 1.137 -0.9904 150.8 -21.0 152.3 7.09% 50.65% 150 1.086 -0.9949 142.1 -14.3 142.8 5.77% 53.50%

On the other hand, in view of this, the conventional dimming control device can be seen as such an application example. By the way, the conventional dimming control apparatus is mainly applied to an incandescent lamp and a fluorescent lamp. Conventional dimming control also adjusts the voltage to 0 V as needed.

By the way, in the case of a street lamp, not such an incandescent lamp or a fluorescent lamp, but a high-pressure mercury lamp, sodium lamp, metal halide lamp, fluorescent lamp sodium lamp, etc. are used. That is, the dimming control of the system different from the dimming control of a conventional incandescent lamp, fluorescent lamp, LED, etc. is calculated | required.

In more detail, street lamps are discharge lamps, and thus, unlike incandescent and fluorescent lamps, stabilization time and starting voltage are required. Initially, a starting voltage of a rated voltage is required for a predetermined time, and when the voltage is changed so rapidly that dimming control is performed, the lamp is turned off and the lamp may be turned on by restarting at least one minute or more. Thus, if the road lighting suddenly dark, there is a problem that both pedestrians and drivers have no choice but to panic.

2 is a graph showing a problem caused by the sudden voltage change of the discharge lamp.

Referring to FIG. 2, when the voltage variable is suddenly increased at 220V, the light may turn off at 190-195V. Due to the characteristics of the discharge lamp, dimming control is not possible with the conventional incandescent lamp dimming control. On the other hand, when slowly changing at 220V, it is turned off at 70-80V. In other words, only the voltage of less than half is turned off, and since the variable is made slow, the off does not occur.

That is, the dimming control according to the characteristics of the discharge lamp is required.

Korea Patent Office Registered Patent Publication 10-1193305 Korean Patent Office Publication No. 10-2009-0027822

An object of the present invention is to provide an automatic dimming control device for a discharge lamp.

Another object of the present invention is to provide an automatic dimming control method for a discharge lamp.

In the above-described automatic dimming control device for a discharge lamp according to the object of the present invention, in the automatic dimming control device for a discharge lamp of a discharge lamp system including a load breaker connected directly to the commercial power source and the on / off switch for performing on / off control, A main breaker receiving the commercial power supply voltage from the load breaker; A constant voltage power output unit configured to receive a commercial power supply voltage from the main breaker and boost or lower the received commercial power supply voltage to output a constant voltage to the open / close switch; A control circuit breaker connected in parallel with the main circuit breaker to control supply / interruption of a commercial power supply voltage input to the main circuit breaker; The control circuit breaker controls the commercial power supply voltage to be supplied to / off the main circuit breaker, the constant voltage output from the constant voltage power output after the lighting of the discharge lamp is 100% of the rated voltage for a predetermined time, and after the predetermined time The controller may be configured to include a controller for controlling the constant voltage power output unit so as to vary randomly in 1 V units within a range of 100% to 85% of the rated voltage according to illuminance.

In this case, the load breaker and the switch may be connected in series to be configured to dimming the discharge lamp.

More specifically, the controller may include an operation power supply unit for converting commercial power supplied through the control breaker into driving power; An input power detector for detecting voltage, current, power factor, power consumption, and power consumption of the commercial power supply; An output power detector for detecting a voltage, a current, a power factor, power consumption, and power consumption at an output terminal of the constant voltage power output unit; A voltage variable output unit configured to output a boost / step-down level signal for determining a step-up ratio or a step-down ratio of the constant voltage power output unit; Monitoring for real-time voltage, current, power factor, power consumption, power consumption, current illuminance, current time, current temperature, etc. detected by the input power detector and output power detector, and setting a target illuminance value, an operating time, and an operating temperature part; An external contact input unit for determining whether the on / off switch is operated; A temperature sensor configured to detect an internal temperature and an external temperature of the discharge lamp system; A ventilation fan configured to circulate the internal air when the internal temperature and the external temperature detected by the temperature sensing unit are abnormal; An abnormality alarm unit which notifies the abnormal blocking and the variable of the overcurrent, the overvoltage, the short circuit and the abnormal phenomenon set by the monitoring unit; An illuminance A / D unit which receives an external illuminance value measured by an illuminometer and converts it into a digital value; Communication unit for transmitting and receiving a control command via a LAN or 485 communication to enable remote monitoring and remote control of the central control terminal; Dimming the discharge lamp by comparing the external illuminance value converted by the illuminance A / D unit with the target illuminance value set by the monitoring unit and variably controlling the output voltage of the constant voltage power output so that the external illuminance value becomes a target illuminance value. If the internal temperature detected by the temperature sensor is higher than the operating temperature set by the monitoring unit, the ventilation fan is operated. When the detected internal temperature is higher than the operating temperature for a predetermined time, the abnormal alarm unit generates an abnormal alarm signal. And a central control unit configured to transmit and control the voltage variable output unit to cut off power.

The voltage variable output unit outputs a step-down level signal when the external illuminance value detected by the illuminance A / D unit is equal to or greater than the target illuminance value to drive a stepping motor of the slicks of the constant voltage power output device by using a reverse rotation circuit. The voltage winding applies a voltage stepped down to the excitation winding of the peripheral voltage so that the voltage output through the main winding is stepped down, and if the external illuminance value detected by the illuminance A / D part is equal to or less than the target illuminance value, a boosted level signal is output. The output voltage may be configured to drive the stepping motor of the slide motor of the constant voltage power output device with a constant rotation circuit so that the voltage output through the main winding is boosted by applying a voltage to which the proportional voltage winding is boosted to the excitation winding of the peripheral voltage transformer.

In the automatic dimming control method for a discharge lamp according to another object of the present invention described above, the central control unit for dimming the discharge lamp by varying the control of the output voltage from the monitoring unit input / output voltage, current, power factor, Receiving a power status of power; Receiving, by the central control unit, input and output voltages, currents, power factors, and power states of the commercial power supply and the constant voltage power output devices respectively detected by an input power unit detector and an output power detector; Receiving, by the central control unit, an external illuminance value from an illuminance A / D unit; Determining, by the central controller, whether the rated voltage of the discharge lamp is equal to the constant voltage of the constant voltage power output device applied to the discharge lamp; If the result of the determination is not the same, controlling the variable voltage output unit to maintain the constant voltage equal to the rated voltage for a predetermined time; Determining, by the central control unit, whether an operation state of an open / close switch input from an external contact input unit is in an on state; Boosting or stepping down the output voltage of the constant voltage power output unit by controlling the voltage variable output unit using the input power situation and external illuminance value; When the discharge lamp is turned off, the central controller may be configured to control the variable voltage output unit to maintain the rated voltage of the discharge lamp equal to the output voltage of the constant voltage power output device.

In this case, the step of controlling the voltage variable output unit to increase or decrease the output voltage of the constant voltage power output unit by using the input power situation and the external illuminance value may include inputting the external illuminance value through the monitoring unit. When the target illuminance value is equal to or greater than the target illuminance value, the voltage variable output unit outputs a step-down level signal to apply a step-down proportional voltage to the discharge lamp as an operating voltage to reduce power consumption of the discharge lamp. The variable output unit may be configured to output a boost level signal to increase a power consumption of the discharge lamp by applying a boost proportional voltage to the discharge lamp as an operating voltage.

The step of controlling the voltage variable output unit to increase or decrease the output voltage of the constant voltage power output unit by using the input power situation and external illuminance value may include outputting the voltage variable output unit to the illuminance A / D unit. When the external illuminance value input from the target illuminance value is greater than or equal to the target illuminance value, the step-down signal is outputted to drive the stepping motor of the slidax of the constant voltage power output device with a reverse rotation circuit so that the proportional voltage winding is stepped down to the excitation winding of the peripheral voltage regulator. When the voltage output through the main winding is applied to step down, and the external illuminance value input from the illuminance A / D unit is less than or equal to the target illuminance value, a boosted level signal is output to output the stepping motor of the slidax of the constant voltage power output device. It is driven by the forward rotation circuit and the proportional voltage winding is stepped up to the excitation winding of the peripheral Added may be configured such that the step-up voltage is output via the windings.

According to the automatic dimming control apparatus and method for the discharge lamp as described above, the discharge lamp is stably operated at a rated voltage of about 10 at the time of initial startup, thereby reducing the consumption of startup time caused by restarting according to the dimming control. .

In addition, when the discharge lamp dimming control by varying the voltage randomly in the unit of about 1V, there is an effect that can eliminate the problem of the lights out due to the sudden change in the voltage.

Thus, ultimately, the power consumption may be reduced due to dimming control of the discharge lamp.

1 is a graph showing a change in current, power factor, and power consumption according to a change in voltage.
2 is a graph showing a problem caused by the sudden voltage change of the discharge lamp.
3 is a block diagram of a discharge lamp system according to an embodiment of the present invention.
4 is a block diagram of a controller according to an embodiment of the present invention.
5 is a flowchart of an automatic dimming control method for a discharge lamp according to an embodiment of the present invention.

As the inventive concept allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description.

It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Like reference numerals are used for like elements in describing each drawing.

The terms first, second, A, B, etc. may be used to describe various elements, but the elements should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be.

On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise.

In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art.

Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

3 is a block diagram of a discharge lamp system according to an embodiment of the present invention.

Referring to Figure 3, the discharge lamp system 10 according to an embodiment of the present invention is configured to include a load breaker 101, automatic dimming control device 100 for the discharge lamp, the opening and closing switch 102, the discharge lamp 103 Can be.

The discharge lamp system 10 operates at a rated voltage by securing a startup time of approximately 10 minutes at the time of initial startup of the discharge lamp 103. Thus, the problem that can be turned off by the dimming control when the discharge lamp 103 is activated is eliminated. In addition, the dimming control does not abruptly change about 5 V, and the dimming control is performed by the stepless voltage change in units of about 1 V, thereby preventing the problem that the discharge lamp 103, which is the discharge lamp, may suddenly turn off. Hereinafter, the detailed configuration will be described.

The load breaker 101 is configured to cut off a load (discharge lamp) by being directly connected to a 220 V or 110 V AC power source that is a commercial power source of a power supply company.

The on / off switch 102 is a configuration for automatically or manually performing on / off control of the discharge lamp 103. The conventional open / close switch 102 may be configured to be automatically turned on or off automatically or manually by an external illuminometer (not shown), a timer (not shown), or a remote control terminal (not shown).

The discharge lamp 103 may be, for example, a high pressure mercury lamp, a sodium lamp, a metal halide lamp, a fluorescent lamp sodium lamp, or the like as a discharge lamp.

The dimming control apparatus 100 for the discharge lamp is configured to directly connect between the load breaker 101 and the open / close switch 102 to vary the voltage applied to the discharge lamp 103 to perform dimming control.

As shown in FIG. 3, the dimming control device 100 for a discharge lamp may be configured to include a main breaker 110, a constant voltage power output device 120, a control breaker 130, and a controller 200. And the controller 200 may be connected to the central control terminal 300 of the external remote and the illumination meter 400 provided outside the discharge lamp system 100 may be configured to transmit and receive data. Hereinafter, the detailed configuration will be described.

The main breaker 110 is configured to receive a commercial power supply voltage from the load breaker 101. The voltage applied to the constant voltage power output device 120 may be cut off by blocking the main breaker 110.

The constant voltage power output unit 120 is configured to receive a commercial power supply voltage from the main breaker 110, and is configured to output a constant voltage to the open / close switch 102 by boosting or lowering the input commercial power supply voltage. That is, the substantial change in voltage is performed at the constant voltage power output device 120.

The control breaker 130 is connected in parallel with the main breaker 110. And the control breaker 130 may be configured to control the supply / interruption of the commercial power supply voltage input to the main breaker (110). The control breaker 130 may be configured to be controlled by the controller 200 again.

The controller 200 may be configured to control the control circuit breaker 130 to supply / block the commercial power supply voltage to the main circuit breaker 110.

In addition, the controller 200 is configured to control the constant voltage output from the constant voltage power output device 120 after the lighting of the discharge lamp 103 to be 100% of the rated voltage for a predetermined time. At this time, the predetermined time may be about 10 extra.

After the predetermined time, the controller 200 controls the constant voltage power output unit 120 to vary in an arbitrary manner in 1 V units within a range of 100% to 85% of the rated voltage according to the external illuminance value provided from the illuminometer 400. It can be configured to. It is not limited to 100% to 85%, and may be determined so as not to be difficult when walking / driving to pedestrians or drivers around according to the brightness of the lamp 103 at about 100% to 90% or 100% to 80%.

The controller 200 may be connected by a LAN cable or a 485 wired cable from the central control terminal 300, and may be configured to receive direct control of the central control terminal 300. That is, whether or not the dimming control, the variable voltage section setting, the start time setting, etc. of the dimming control may be configured and controlled remotely.

4 is a block diagram of a controller according to an embodiment of the present invention.

Referring to FIG. 4, the controller 200 according to an embodiment of the present invention may include an operation power supply 201, an input power detector 202, an output power detector 203, a voltage variable output unit 204, and a monitoring unit ( 205, an external contact input unit 206, a temperature sensing unit 207, a ventilation fan 208, an abnormality alarm unit 209, an illuminance A / D unit 210, a communication unit 211, and a central control unit 212. It can be configured to. Hereinafter, the detailed configuration will be described.

The operation power supply unit 201 is configured to convert commercial power supplied through the control circuit breaker 130 into driving power.

The input power detector 202 is configured to detect the voltage, current, power factor, power consumption, and power consumption of the commercial power supply. The output power detector 203 is configured to detect a voltage, a current, a power factor, power consumption, and power consumption at an output terminal of the constant voltage power output device 120. It is a component to grasp the power situation and use the power situation as a data for dimming control. The input power detector 202 and the output power detector 203 transmit such a power situation to the central controller 212. In addition, such a power situation may be a data for calculating a change in power consumption according to the voltage change, through which a control change may be performed.

The voltage variable output unit 204 may be configured to output a boost / step-down level signal that determines a step-up ratio or a step-down ratio of the constant voltage power output device 120. The constant voltage power output unit 120 performs a voltage change according to the voltage rising / falling level signal of the voltage variable output unit 204.

More specifically, the voltage variable output unit 204 outputs a step-down level signal when the external illuminance value detected by the illuminance A / D unit 210 is equal to or greater than the target illuminance value, so that the voltage of the slicks of the constant voltage power output unit 120 is output. The stepping motor is driven by a reverse rotation circuit so that the proportional voltage winding applies the voltage stepped down to the excitation winding of the peripheral voltage so that the voltage outputted through the main winding is stepped down, and the external illuminance detected by the illuminance A / D unit 210. If the value is equal to or less than the target illuminance value, the boosting level signal is output to drive the stepping motor of the slidax of the constant voltage power supply output device 120 with the forward rotation circuit to apply a voltage at which the proportional voltage winding is boosted to the excitation winding of the peripheral voltage transformer. The voltage output through the step may be configured to step up.

In more detail, the slidax of the constant voltage power output unit 120 has a proportional voltage winding of 0 to 220 V at a rated voltage of 220 V, and the transformer has a main winding of 0 to 35 V and an excitation winding of 0. Assuming that the voltage applied to the constant voltage power output device 120 is applied as an initial voltage under the configuration of the constant voltage power output device 120 having ˜220 V, the input voltage is not increased or decreased by the constant voltage power output device 120. Since the output voltage is the same, V is 220 [V]: 35 [V] = X [V]: 0 [V], so X [V] becomes 0V.

In the proportional voltage winding of the slydax, the voltage detected by the output power detection unit 203 becomes 0 V by drawing out the step-down signal from the voltage variable output unit 204 so that the contact portion output through the tab provided on one side goes to 0 V. Stopping the stepping motor at this point and outputting it to the proportional voltage winding of the slidax so that the voltage applied to the excitation winding of the transformer is 0V and 0V induced to the main winding, so the output voltage is output the same as the input voltage.

On the other hand, in an embodiment in which the output to 200 V to control the illuminance value set after the initial time after the initial power-up, V is X by 220 [V]: 35 [V] = X [V]: 20 [V] V] becomes 126V.

The proportional voltage winding of the Slydax draws out the step-down signal from the voltage variable output unit 204 so that the contact portion output through the tap provided on one side reaches 126 V, so that the voltage detected by the output power detection unit 203 becomes 200 V. At the point, stop the stepping motor and output it to the proportional voltage winding of Slidax, and the voltage applied to the excitation winding of the transformer is 126V and 20V induced to the main winding, so the output voltage is maintained at 200V compared to the input voltage. Maintain constant illuminance.

The monitoring unit 205 may be configured to monitor the real-time voltage, current, power factor, power consumption, power consumption, and current illuminance, current time, and current temperature detected by the input power detector 202 and the output power detector 203. have. And set a target illuminance value, an operating time, and an operating temperature. The monitoring unit 205 may be configured to enable a user user interface.

The external contact input unit 206 may be configured to determine whether the open / close switch 102 is operated. That is, the configuration for sensing. When the on-off switch 102 itself is ON, dimming control is performed, and when OFF, it may be configured to maintain the rated voltage.

The temperature detector 207 is configured to detect the internal temperature and the external temperature of the discharge lamp system 10. The temperature sensor 207 is a configuration for temperature control according to the overload.

The ventilation fan 208 is configured to circulate the internal air in the event of abnormality of the internal temperature and the external temperature sensed by the temperature sensing unit 207. The ventilation fan 208 is configured to operate under the control of the central control unit 212 according to the sensing temperature of the temperature sensing unit 207.

The abnormality alarm unit 209 is configured to notify the abnormal blocking and the variable of the overcurrent, the overvoltage, the short circuit, and the abnormal phenomenon set by the monitoring unit 205. Such abnormal blocking or variable may be known as the central control terminal 300 through the communication unit 211.

The illuminance A / D unit 210 is configured to receive an external illuminance value measured by the illuminometer 400 and convert it to a digital value. The digital value is provided to the central control unit 212.

The communication unit 211 is configured to transmit and receive a control command via LAN communication or 485 communication to enable remote monitoring and remote control of the central control terminal 400. Then, the abnormal cutoff or variable of the abnormal alarm unit 209 is transmitted to the central control terminal 400 through the communication unit 211.

The central control unit 212 is configured to compare the external illuminance value converted by the illuminance A / D unit 210 with the target illuminance value set by the monitoring unit 205. The dimming control of the discharge lamp 103 is performed by variably controlling the output voltage of the constant voltage power output device 120 so that the external illuminance value becomes the target illuminance value. That is, dimming control is performed according to the change of the external illuminance value.

In addition, the central control unit 212 operates the ventilation fan 208 when the internal temperature detected by the temperature sensing unit 207 is higher than the operating temperature set by the monitoring unit 205 and the internal temperature previously detected for a predetermined time is the operating temperature. If higher, the abnormality alarm unit 209 is configured to generate and transmit an abnormality alarm signal. The central controller 212 may control the voltage variable output unit 204 to cut off power.

5 is a flowchart of an automatic dimming control method for a discharge lamp according to an embodiment of the present invention.

Referring to FIG. 5, first, the central control unit 212 that variably controls the output voltage to control the dimming lamp discharges from the monitoring unit 205 to the input / output voltage, current, power factor, and power of the commercial power supply and the constant voltage power output device 120. The power situation is received (S101).

Next, the central control unit 212 determines the power status of the input / output voltage, current, power factor, and power of the commercial power supply and the constant voltage power output device 120 detected by the input power detector 202 and the output power detector 203, respectively. It receives an input (S102).

Next, the central control unit 212 receives an external illuminance value from the illuminance A / D unit 210 (S103).

Next, the central controller 212 determines whether the rated voltage of the discharge lamp 103 is equal to the constant voltage of the constant voltage power output device 120 applied to the discharge lamp 103 (S104).

At this time, when the determination result is not the same, the central control unit 212 repeats controlling the voltage variable output unit 204 so that the constant voltage remains the same as the rated voltage for a predetermined time (S105).

However, if the determination result is the same, the central control unit 212 determines whether the operation state of the open / close switch 102 input from the external contact input unit 206 is in an on state (S106).

When the determination result is in the on state, the central controller 212 controls the voltage variable output unit 204 by using the previously input power condition and external illuminance value to step up or step down the output voltage of the constant voltage power output device 120 ( S107).

In this case, when the external illuminance value is greater than or equal to the target illuminance value input through the monitoring unit 205, the voltage variable output unit 204 outputs the step-down level signal to operate the step-down proportional voltage to the discharge lamp 103. Voltage is applied to reduce the power consumption of the discharge lamp 103, and if the external illuminance value is less than the target illuminance value, the voltage variable output unit 204 outputs a boosted level signal to the discharge lamp 103 to the boosted proportional voltage as the operating voltage Is applied to increase the power consumption of the discharge lamp 103.

The central controller 212 outputs the step-down level signal when the voltage variable output unit 204 inputs the illuminance A / D unit 210 to the target illuminance value or more, thereby outputting the slidance of the constant voltage power output unit 120. Drive the stepping motor of the reverse rotation circuit so that the proportional voltage winding applies the voltage stepped down to the excitation winding of the peripheral voltage so that the voltage outputted through the main winding is stepped down, and the external input from the illuminance A / D unit 210 is applied. When the illuminance value is equal to or less than the target illuminance value, the booster level signal is output to drive the stepping motor of the slidax of the constant voltage power supply output device 120 with the forward rotation circuit to apply a voltage at which the proportional voltage winding is boosted to the excitation winding of the peripheral voltage regulator. The voltage output through the line is configured to step up.

Next, when the discharge lamp 103 is turned off, the central control unit 212 controls the voltage variable output unit 204 to maintain the rated voltage of the discharge lamp 103 equal to the output voltage of the constant voltage power output device 120 ( S108).

Although described with reference to the above embodiments, those skilled in the art can understand that the present invention can be variously modified and changed without departing from the spirit and scope of the invention described in the claims below. There will be.

10: discharge lamp system 100: automatic dimming control device for the discharge lamp
101: load breaker 102: switching switch
103: discharge lamp 110: main breaker
120: constant voltage power output 130: control circuit breaker
200: controller 201: operation power supply
202: input power detector 203: output power detector
204: variable voltage output unit 205: monitoring unit
206: external power input unit 207: temperature sensing unit
208: ventilation fan 209: abnormal alarm
210: roughness A / D part 211: communication part
212: central control unit 300: central control terminal
400: illuminometer

Claims (6)

delete delete An automatic dimming control device for a discharge lamp of a discharge lamp system including a load breaker connected directly to a commercial power source and an on / off control switch.
A main breaker receiving a commercial power supply voltage from the load breaker;
A constant voltage power output unit configured to receive a commercial power supply voltage from the main breaker and boost or lower the received commercial power supply voltage to output a constant voltage to the open / close switch;
A control circuit breaker connected in parallel with the main circuit breaker to control supply / interruption of a commercial power supply voltage input to the main circuit breaker;
The control circuit breaker controls the commercial power supply voltage to be supplied to / off the main circuit breaker, the constant voltage output from the constant voltage power output after the lighting of the discharge lamp is 100% of the rated voltage for a predetermined time, and after the predetermined time A dimming control of a discharge lamp connected in series between the load breaker and the closure switch, including a controller controlling the constant voltage power output unit to vary in 1 V units within a range of 100% to 85% of the rated voltage according to the illuminance;
The controller,
An operation power supply unit for converting commercial power supplied through the control breaker into driving power;
An input power detector for detecting voltage, current, power factor, power consumption, and power consumption of the commercial power supply;
An output power detector for detecting a voltage, a current, a power factor, power consumption, and power consumption at an output terminal of the constant voltage power output unit;
A voltage variable output unit configured to output a boost / step-down level signal for determining a step-up ratio or a step-down ratio of the constant voltage power output unit;
Monitoring for real-time voltage, current, power factor, power consumption, power consumption, current illuminance, current time, current temperature, etc. detected by the input power detector and output power detector, and setting a target illuminance value, an operating time, and an operating temperature part;
An external contact input unit for determining whether the on / off switch is operated;
A temperature sensor configured to detect an internal temperature and an external temperature of the discharge lamp system;
A ventilation fan configured to circulate the internal air when the internal temperature and the external temperature detected by the temperature sensing unit are abnormal;
An abnormality alarm unit which notifies the abnormal blocking and the variable of the overcurrent, the overvoltage, the short circuit and the abnormal phenomenon set by the monitoring unit;
An illuminance A / D unit which receives an external illuminance value measured by an illuminometer and converts it into a digital value;
Communication unit for transmitting and receiving a control command via a LAN or 485 communication to enable remote monitoring and remote control of the central control terminal;
By comparing the external illuminance value converted by the illuminance A / D unit with the target illuminance value set by the monitoring unit, dimming the discharge lamp by variably controlling the output voltage of the constant voltage power output so that the external illuminance value becomes the target illuminance value. When the internal temperature detected by the temperature sensor is higher than the operating temperature set by the monitoring unit, the ventilation fan is operated. When the detected internal temperature is higher than the operating temperature for a predetermined time, the abnormal alarm unit generates an abnormal alarm signal. A central control for transmitting and controlling the voltage variable output to cut power;
The voltage variable output unit,
If the external illuminance value detected by the illuminance A / D unit is equal to or greater than the target illuminance value, a step-down level signal is output to drive the stepping motor of the slidax of the constant voltage power output device with a reverse rotation circuit so that the proportional voltage winding excites the peripheral voltage. Applying the voltage stepped down to the winding so that the voltage output through the main winding is stepped down, and if the external illuminance value detected by the illuminance A / D part is less than or equal to the target illuminance value, a boosted level signal is output to output the voltage of the constant voltage power output device. Automatic dimming control device for a discharge lamp, characterized in that configured to drive the stepping motor of the Slydax by a forward rotation circuit to apply a voltage boosted to the excitation winding of the peripheral voltage by boosting the voltage output through the main winding .
Receiving, by a central control unit, a dimming control of the discharge lamp by variably controlling the output voltage, the input / output voltage, current, power factor, and power status of the commercial power supply and the constant voltage power output unit from the monitoring unit;
Receiving, by the central control unit, input and output voltages, currents, power factors, and power states of the commercial power supply and the constant voltage power output devices respectively detected by an input power unit detector and an output power detector;
Receiving, by the central control unit, an external illuminance value from an illuminance A / D unit;
Determining, by the central controller, whether the rated voltage of the discharge lamp is equal to the constant voltage of the constant voltage power output device applied to the discharge lamp;
If the result of the determination is not the same, controlling the variable voltage output unit to maintain the constant voltage equal to the rated voltage for a predetermined time;
Determining, by the central control unit, whether an operation state of an open / close switch input from an external contact input unit is in an on state;
Boosting or stepping down the output voltage of the constant voltage power output unit by controlling the voltage variable output unit using the input power situation and external illuminance value;
And when the discharge lamp is off, the central control unit controls the voltage variable output unit to maintain the rated voltage of the discharge lamp equal to the output voltage of the constant voltage power output device.
5. The method of claim 4, wherein the central control unit steps up or down the output voltage of the constant voltage power output unit by controlling the variable voltage output unit using the received power condition and external illuminance value.
When the external illuminance value is greater than or equal to a target illuminance value input through the monitoring unit, the voltage variable output unit outputs a step-down level signal to apply a step-down proportional voltage to the discharge lamp as an operating voltage to reduce power consumption of the discharge lamp, And if the illuminance value is less than or equal to a target illuminance value, the voltage variable output unit outputs a boost level signal to apply a boost proportional voltage to the discharge lamp as an operating voltage to increase power consumption of the discharge lamp.
6. The method of claim 5, wherein the central control unit steps up or down the output voltage of the constant voltage power output unit by controlling the voltage variable output unit using the input power situation and the external illuminance value.
The voltage variable output unit outputs a step-down level signal when the external illuminance value inputted from the illuminance A / D unit is equal to or greater than the target illuminance value to drive a stepping motor of the slack dax of the constant voltage power output device with a reverse rotation circuit to provide a proportional voltage winding. By applying a voltage stepped down to the excitation winding of the peripheral voltage so that the voltage output through the main winding is stepped down, and if the external illuminance value input from the illuminance A / D unit is less than the target illuminance value and outputs a boosted level signal Discharge, characterized in that for driving the stepping motor of the slidax step of the constant voltage power output device by a forward rotation circuit to apply a voltage boosted by the excitation winding of the peripheral pressure transformer to boost the voltage output through the main winding How to automatically control dimming.

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