KR20140126631A - High power dimming system and method for light emitting diode lamp - Google Patents

Abstract

Disclosed are a remotely controlled high power dimming system for an LED lamp and a method thereof. The remotely controlled high power dimming system for an LED lamp of the present invention comprises: a server for generating and transmitting a dimming control signal; a gateway for receiving the dimming control signal from the server and transmitting the received dimming control signal by an RS485 communication method; a motion sensor which transmits a motion signal by zigbee communication or bluetooth communication by sensing surrounding motion; a local controller which receives the dimming control signal from the gateway, and transmits the received dimming control signal wirelessly by zigbee communication or bluetooth communication in case the motion signal is received from the motion sensor; a high power automatic dimmer which receives the dimming control signal from the local controller wirelessly, and controls dimming according to the wirelessly received dimming control signal; and a number of LED lamps whose dimming is controlled according to the dimming contrl of the high power automatic dimmer. According to this remotely controlled high power dimming system for an LED lamp and the method thereof, a high power automatic dimmer is comprised in order to control a number of LED lamps remotely. And the system can operate and manage the LED lamps remotely and conveniently, by controlling dimming or blocking a current by sensing temperature, luminance and a transient current automatically.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote control power dimming system and method for an LED lamp,

The present invention relates to a large power dimming system and method, and more particularly to a large power dimming system and method for remotely controlling a plurality of LED lamps.

Conventional dimmers are configured to precisely control the illuminance of lighting lamps such as fluorescent lamps and LEDs to prevent power wastage or safety accidents in advance.

However, in the case of conventional LEDs, since the dimmer is connected to the ballast output terminal of each LED and controls the dimming, a separate dimmer should be mounted to each LED and the like. In such a case, one dimmer can only control the dimming of one LED or the like. That is, there is a problem that it is not possible to control several LEDs with one dimmer.

On the other hand, conventional LEDs use a ballast with a built-in switching mode power supply (SMPS), which makes it impossible to apply dimming for large power for dimming control of a large number of LEDs.

Accordingly, in the conventional dimming control, a stabilizer for dimming control should be installed in an LED or the like, or a dimmer should be additionally installed for each LED in the absence of a stabilizer. Therefore, the cost is high and excessive construction work is required.

Conventionally, there is a large-power dimming control method using a solid state relay (SSR) device as the power control for large power. However, this method has a problem that excessive noise is generated and an impact voltage is applied to the LED, There is a problem that it is very high. Therefore, it is a very limited use for large electric power.

That is, the conventional dimmer is not operated systematically in a large building, a public office, an apartment, a parking lot, a factory, etc. where a central control is required, and LEDs are separately operated.

In addition, there is a problem in that, even if a problem arises due to a large-current radiation or a short circuit due to the absence of a central control system, appropriate measures can not be taken.

As described above, there is a need for a system capable of systematically dimming a large number of LEDs of a large power source remotely and preventing and detecting an overcurrent or a short circuit.

It is an object of the present invention to provide a remote control power dimming system for an LED lamp.

It is another object of the present invention to provide a remote control power dimming method for an LED lamp.

According to an aspect of the present invention, there is provided a remote control power dimming system for an LED lamp, comprising: a server for generating and transmitting a dimming control signal; A gateway for receiving a dimming control signal from the server and transmitting the dimming control signal through an RS485 communication system; A motion sensor for sensing a surrounding motion and transmitting the motion signal through a zigbee communication method or a Bluetooth communication method; A local controller receiving the dimming control signal from the gateway and wirelessly transmitting the received dimming control signal through a zigbee communication or a Bluetooth communication method when a motion signal is received from the motion sensor; A large power automatic dimmer that wirelessly receives a dimming control signal from the local controller and controls dimming according to a dimmed control signal received wirelessly; And a plurality of LED lamps which are dimmed and controlled according to dimming control of the high-power automatic dimmer.

Here, the large power automatic dimmer includes a wireless module for wirelessly receiving a dimming control signal from the local controller, a temperature sensor for detecting an ambient temperature, an illuminance sensor for detecting an ambient illuminance, A current transformer (CT) for detecting and outputting an amount of current, and a current controller (CT) for taking into consideration the ambient temperature sensed by the temperature sensor, the ambient illuminance sensed by the illuminance sensor, A central processing unit (CPU) for converting a dimming control signal wirelessly received by the PWM signal into a PWM signal and outputting a PWM signal, a MOSFET a PWM control module for controlling the plurality of LEs by removing PWM noise of AC 220V AC power controlled by the MOSFET module, D lamp. ≪ / RTI >

The CPU may be configured to turn off the plurality of LED lamps and notify the server when the amount of current sensed by the current sensor is equal to or greater than a predetermined peak value.

The CPU may be configured to turn off the plurality of LED lamps and notify the server when the ambient temperature sensed by the temperature sensor and the ambient illuminance sensed by the illuminance sensor are respectively equal to or greater than a predetermined peak value .

The CPU may be configured to convert the dimming control signal into a three-phase control PWM signal so that dimming control can be performed by dividing the plurality of LED lamps into three groups.

In addition, the CPU outputs a three-phase control PWM signal with relatively low output to the LED lamp group having relatively high illuminance among the plurality of LED lamps, and a three-phase control PWM signal with relatively high output as the LED lamp group moving away from the window And output a control PWM signal.

According to another aspect of the present invention, there is provided a remote control power dimming method for an LED lamp, the method comprising: generating and transmitting a dimming control signal by a server; The gateway receiving the dimming control signal from the server and transmitting the dimming control signal through the RS485 communication system; The local controller receiving a dimming control signal from the gateway; Transmitting the motion signal to the local controller through a zigbee communication method or a bluetooth communication method by sensing the motion of the motion sensor; Wirelessly transmitting the dimming control signal to a high-power automatic dimmer in a Zigbee or Bluetooth communication scheme when the wireless controller receives a motion signal from the motion sensor; Power automatic dimming device wirelessly receiving a dimming control signal from the local controller and dimming the plurality of LED lamps according to the received dimming control signal.

At this time, the high-power automatic dimmer wirelessly receives a dimming control signal from the local controller, and dimming control of a plurality of LED lamps according to the received dimming control signal is performed by the wireless module wirelessly receiving the dimming control signal, A temperature sensor detects an ambient temperature, an illuminance sensor senses an ambient illuminance, a current transformer senses and outputs an amount of current input to the plurality of LED lamps, and a central processing unit (CPU) Converts the dimming control signal wirelessly received by the local controller into a PWM signal in consideration of the ambient temperature sensed by the local sensor, the ambient illuminance sensed by the illuminance sensor, and the amount of current output by the current sensor, PWM control of the AC 220V AC power is performed by the PWM signal to output a power waveform of 120 Hz, The PWM noise of the AC 220V alternating current PWM controlled by the FET module may be removed and output to the plurality of LED lamps.

The step of wirelessly receiving the dimming control signal from the local controller and controlling the dimming control of the plurality of LED lamps according to the received dimming control signal may include the step of controlling the amount of current detected by the current sensor to a predetermined peak value or more , The CPU may be configured to turn off the plurality of LED lamps and notify the server.

And the step of wirelessly receiving the dimming control signal from the local controller and dimming control of the plurality of LED lamps according to the received dimming control signal may include the step of controlling the ambient temperature sensed by the temperature sensor, The CPU may turn off the plurality of LED lamps and inform the server of the turn-off of the LED lamps.

The step of wirelessly receiving the dimming control signal from the local controller and dimming control of the plurality of LED lamps according to the received dimming control signal may include dividing the plurality of LED lamps into three groups, The CPU may be configured to convert the dimming control signal into a three-phase control PWM signal and output it.

And the step of wirelessly receiving the dimming control signal from the local controller and dimming control of the plurality of LED lamps according to the received dimming control signal may include the steps of: The high window LED lamp group may be configured to output a relatively low output three phase control PWM signal and a relatively high output three phase PWM signal as the LED lamp group away from the window.

According to the remote control power dimming system and method of the LED lamp as described above, a large power automatic dimmer is provided to remotely control a plurality of LED lamps, and the dimming control of temperature, illumination, It is possible to conveniently and smoothly operate and manage a large number of LED lamps remotely. In addition, when a transient current or a leakage current is detected, it is notified to the server, so that it is possible to easily detect a fault remotely in real time. On the other hand, a plurality of LED lamps connected to one high-power automatic dimmer are controlled in three phases to perform different dimming control, thereby finely controlling power waste and exhibiting a lighting effect.

1 is a block diagram of a remote control power dimming system for an LED lamp according to an embodiment of the present invention.
2 is a detailed configuration diagram of a large power automatic dimmer according to an embodiment of the present invention.
3 is an exemplary circuit diagram of a remote control versus power dimming system for an LED lamp in accordance with an embodiment of the present invention.
4 is a flowchart of a remote control power dimming method for an LED lamp according to an embodiment of the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail to the concrete inventive concept.

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.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, .

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 in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise.

In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations 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 to which this invention belongs.

Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

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

1 is a block diagram of a remote control power dimming system for an LED lamp according to an embodiment of the present invention.

Referring to FIG. 1, a remote control power dimming system 100 (hereinafter, referred to as a 'large power dimming system') for an LED lamp according to an embodiment of the present invention includes a server 110, a gateway 120, A sensor 130, a local controller 140, a large power automatic dimmer 150, and an LED lamp 160. [

The large power dimming system 100 is a dimming system configured to allow a plurality of LED lamps 160 to be remotely controlled by the server 110. The dimming system is a dimming system that self-detects ambient temperature, ambient illuminance, . It is advantageous in that a plurality of LED lamps 160 can be easily controlled by using one high-power automatic dimmer 150 without installing dimmers in the LED lamps or adding additional equipment or construction to the existing LED lamps have. In addition, the LED lamp 160 of a large building, a public office, a park, or the like can be managed in real time by detecting a failure due to a transient current or the like and informing the server 110 of the failure. Particularly, by controlling three phases in one high-power automatic dimmer 150, it is possible to control the plurality of LED lamps 160 to have different illuminances and obtain a lighting effect or a power saving effect. Hereinafter, the detailed configuration will be described.

The server 110 may be configured to generate and transmit a dimming control signal to the local controller 140. [ The server 110 is a configuration for more conveniently managing and controlling dimming of a large-sized LED lamp, which is difficult to manage or maintain due to a small number of people, such as a public office, a park, a large building, a hotel, The server 110 may also be configured to receive a failure or the like of each LED lamp 160 from the large power automatic dimmer 150 and monitor it in real time.

The dimming control signal is a dimming control signal for each of the LED lamps 160 to control the dimming in various ways such as maintaining consistently low illuminance throughout the night or maintaining a high illuminance in the evening. The dimming control signal can also be used for forced ON / OFF control of the LED lamp 160. [

The motion sensor 130 may be a sensor for sensing movement of the surroundings and may be configured to transmit a motion signal to the local controller 140 through a zigbee communication method, a Bluetooth communication method, or a Wi-Fi communication method.

The gateway may be configured to receive the dimming control signal from the server 110 and to transmit the dimming control signal to the local controller 140 through the RS485 / RS422 / RS232 communication method. The local controller 140 may be configured such that the motion sensor 130 and the high-power automatic dimmer 150 are connected wirelessly. At this time, it is preferable that a plurality of motion sensors 130 and a plurality of large power automatic dimmers 150 are wirelessly connected to one local controller 140. It is preferable that the motion sensor 130 and the plurality of large power automatic dimmers 150 are provided in one pair, respectively. Accordingly, the large-power automatic dimmer 150 of the corresponding space may perform illumination control according to the motion sensed in various spaces.

The local controller 140 may be configured to receive a dimming control signal from the gateway 120. When a motion signal is received from the motion sensor 130, the local controller 140 transmits the received dimming control signal to the high-power automatic dimmer 150 through zigbee communication, Bluetooth communication, or Wi- Lt; / RTI >

The large power automatic dimmer 150 may be configured to wirelessly receive a dimming control signal from the local controller 140 and dimming the plurality of LED lamps 160 according to a dimmed control signal received wirelessly. The large power automatic dimming unit 150 has a feature that it can control a plurality of LED lamps by power dimming and control them remotely.

The LED lamp 160 may be configured to be dimming controlled according to the dimming control of the large power automatic dimmer 150. [

2 is a detailed configuration diagram of a large power automatic dimmer according to an embodiment of the present invention.

2, the large power automatic dimmer 150 includes a wireless module 151, a temperature sensor 152, an illuminance sensor 153, a current sensor 154, a CPU 155, a MOSFET module 156, Filter 157 as shown in FIG. Hereinafter, the detailed configuration will be described.

The wireless module 151 may be configured to wirelessly receive the dimming control signal from the local controller 140. [ The wireless module 151 may be configured according to a wireless scheme such as ZigBee, Bluetooth, WiFi, or the like.

The temperature sensor 152 may be configured to sense the ambient temperature. It is for LED dimming control according to ambient temperature. If the temperature exceeds the peak value, it can be used to prevent a failure or an error through measures such as shutting off power in real time.

The illuminance sensor 153 may be configured to sense ambient illuminance. Illumination can also be used to prevent faults or errors through measures such as shutting off power in real time when the peak value is exceeded.

A current transformer (CT) 154 may be configured to sense and output the amount of current input to the plurality of LED lamps 160. The current sensor 154 is a configuration necessary to prevent the LED lamp 160 from detecting in advance such damage as excessive current radiation or short-circuit. The existing dimmer does not have a self-diagnosis device, but the present invention has a self-diagnosis function in addition to a large-power remote function.

The central processing unit (CPU) 155 controls the operation of the local controller (not shown) in consideration of the ambient temperature sensed by the temperature sensor 152, the ambient illuminance sensed by the ambient light sensor 153, 140 to a pulse width modulation (PWM) signal and outputs the dimming control signal. The PWM signal is suitable for control of the illumination lamp. The CPU 155 may output a PWM signal having a period of 20 mu s to 40 mu s and causing the dimming output to be determined according to the pulse width. Thus, the PWM signal is very suitable for dimming control using the pulse width.

On the other hand, the CPU 155 may be configured to turn off the LED lamps 160 when the amount of current sensed by the current sensor 154 is equal to or greater than a predetermined peak value. In addition, the CPU 155 may be configured to notify the server 110 of this. Accordingly, the server 110 can monitor the transient current in real time.

On the other hand, when the ambient temperature sensed by the temperature sensor 152 and the ambient illuminance sensed by the illuminance sensor 153 are respectively equal to or more than a predetermined peak value, the CPU 155 turns off the LED lamps 160 Lt; / RTI > And notify it to the server 110. It is possible to detect a fire or other problem by detecting abnormal temperature of ambient temperature, and it is preferable to shut off the current at this time.

On the other hand, the CPU 155 may be configured to convert the dimming control signal into a three-phase control PWM signal and output the dimming control signal in order to divide the plurality of LED lamps 160 into three groups for dimming control. That is, the CPU 155 can control the illuminance of each LED lamp 160 differently by the three-phase signal. One PWM control signal is output to one high-power dimming controller 150 so that all the LED lamps 160 connected thereto are controlled at the same illuminance. However, when the PWM signal is composed of three-phase control signals, It is possible to divide and control the light intensity of the light source.

For example, the CPU 155 outputs a relatively low-power three-phase control PWM signal to the LED lamp group having a relatively high luminance among the plurality of LED lamps 160, and the LED lamp group moving away from the window Phase control PWM signal having a high output as shown in Fig.

As described above, the CPU 155 can perform various three-phase control as needed. In another example, the LED lamps 160 directly above the central table of the LED lamps 160 in the room are controlled to have high illumination, It is also possible to perform low illumination control on the LED lamp 160 around the other two walls.

The metal oxide silicon field effect transistor (MOSFET) module 156 may be PWM-controlled by the PWM signal output from the CPU 155 to AC 220 V AC power to amplify and output a power waveform of 120 Hz. Up to five MOSFET modules 156 may be provided and may be configured to provide an output of at least 1.5 kW. At this time, it is possible to finely control the output by 1%, 5%, and 10% units to control the dimming.

The filter 157 may be configured to remove the PWM noise of the AC 220V AC power PWM controlled by the MOSFET module 156 and output it to the plurality of LED lamps 160. [

On the other hand, the standby power of the large-power automatic dimmer 150 is preferably maintained at less than 2W. Generally, since the dimmer attached to each LED lamp consumes 0.5 W to 0.6 W per unit, the large-power automatic dimmer 150 that remotely controls the plurality of LED lamps 160 collectively controls the demand for standby power There is an advantage of shrinking. In the conventional 20 LED lamps, since the standby power is 10 W to 20 W, the efficiency of the large power automatic dimmer 150 according to the present invention is inevitably high.

3 is an exemplary circuit diagram of a remote control versus power dimming system for an LED lamp in accordance with an embodiment of the present invention.

3 is a circuit example of the large power automatic dimmer 150, which can be variously configured.

4 is a flowchart of a remote control power dimming method for an LED lamp according to an embodiment of the present invention.

Referring to FIG. 4, first, the server 110 generates and transmits a dimming control signal (S101).

Next, the gateway 120 receives the dimming control signal from the server 110 and transmits the dimming control signal through the RS485 communication method (S102).

Next, the local controller 140 receives the dimming control signal from the gateway 120 (S103).

Next, the motion sensor 130 senses the peripheral motion and transmits the motion signal to the local controller 140 through a zigbee communication method or a Bluetooth communication method (S104).

Next, when the local controller 140 receives a motion signal from the motion sensor 130, the dimming control signal is wirelessly transmitted to the large-power automatic dimmer 150 through a zigbee communication or a Bluetooth communication scheme (S105).

Next, the large power automatic dimmer 150 wirelessly receives the dimming control signal from the local controller 140, and controls the dimming control of the plurality of LED lamps 160 according to the received dimming control signal (S106). Here, when the wireless module 151 wirelessly receives the dimming control signal, the temperature sensor 152 senses the ambient temperature, the illuminance sensor 153 senses the ambient illuminance, and the current transformer 154 The central processing unit (CPU) 155 detects the ambient temperature sensed by the temperature sensor 152, the ambient temperature sensed by the ambient light sensor 153, The dimming control circuit 154 converts the dimming control signal wirelessly received by the local controller 140 into a PWM signal in consideration of the amount of current output by the current sensor 154 and outputs the PWM signal to the MOSFET module 156, The AC / 220V AC power is PWM-controlled to output a power waveform of 120 Hz, and the filter 157 removes the PWM noise of the AC 220V AC power which is PWM-controlled by the MOSFET module 156, Output.

At this time, if the amount of current sensed by the current sensor 154 is equal to or greater than a predetermined peak value, the CPU 155 may be configured to turn off the plurality of LED lamps 160 and notify the server 110 of the amount of current.

When the ambient temperature sensed by the temperature sensor 152 and the ambient illuminance sensed by the illuminance sensor 153 are respectively equal to or greater than a predetermined peak value, the CPU 155 turns off the LED lamps 160 and controls the server 110, < / RTI >

The CPU 155 may be configured to convert the dimming control signal into a three-phase control PWM signal and to output the dimming control signal so that the dimming control can be performed by dividing a plurality of LED lamps 160 into three groups.

Further, the CPU 155 outputs a relatively low-output three-phase control PWM signal to the LED lamp group of the window with relatively high illumination among the plurality of LED lamps 160, and the LED lamp group moving away from the window is relatively high Phase control PWM signal of the output.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the following claims. There will be.

110: Server
120: Gateway
130: Motion sensor
140: Local controller
150: Large power automatic dimmer
151: Wireless module
152: Temperature sensor
153: Light sensor
154: Current sensor
155: CPU
156: MOSFET module
157: Filter
160: LED lamp

Claims (10)

A server for generating and transmitting a dimming control signal;
A gateway for receiving a dimming control signal from the server and transmitting the dimming control signal through an RS485 communication system;
A motion sensor for sensing a surrounding motion and transmitting the motion signal through a zigbee communication method or a Bluetooth communication method;
A local controller receiving the dimming control signal from the gateway and wirelessly transmitting the received dimming control signal through a zigbee communication or a Bluetooth communication method when a motion signal is received from the motion sensor;
A large power automatic dimmer that wirelessly receives a dimming control signal from the local controller and controls dimming according to a dimmed control signal received wirelessly;
And a plurality of LED lamps controlled to be dimmed according to dimming control of the high-power automatic dimmer,
The large power automatic dimmer includes:
A light sensor for sensing ambient light intensity; a current sensor for sensing and outputting an amount of current input to the plurality of LED lamps; a current transformer CT, and a dimming control signal wirelessly received by the local controller in consideration of an ambient temperature sensed by the temperature sensor, an ambient illuminance sensed by the illuminance sensor, and an amount of current output by the current sensor A central processing unit (CPU) for converting the PWM signal into a PWM signal, a MOSFET (metal oxide silicon field effect transistor) module for performing PWM control of AC 220 V AC power by the PWM signal and outputting the PWM signal with a power waveform of 120 Hz, And a filter for removing PWM noise of AC 220V AC power controlled by the MOSFET module and outputting the PWM noise to the LED lamps Remote control for dimming LED lamp power system according to claim. The system according to claim 1,
Wherein the controller is configured to turn off the plurality of LED lamps and notify the server when the amount of current detected by the current sensor is greater than or equal to a predetermined peak value. 3. The apparatus according to claim 2,
Wherein the controller is configured to turn off the plurality of LED lamps and to notify the server of the turn-off control when the ambient temperature detected by the temperature sensor and the ambient illuminance detected by the illuminance sensor are respectively equal to or more than a predetermined peak value. Remote control vs. power dimming system. 4. The apparatus according to claim 3,
Wherein the dimming control signal is converted into a three-phase control PWM signal so that dimming control can be performed by dividing the plurality of LED lamps into three groups. 5. The apparatus according to claim 4,
Phase control PWM signal is output to the LED lamp group having relatively high brightness among the plurality of LED lamps and the relatively high output three phase control PWM signal is outputted as the LED lamp group moving away from the window Wherein the remote control power dimming system comprises: The server generating and transmitting a dimming control signal;
The gateway receiving the dimming control signal from the server and transmitting the dimming control signal through the RS485 communication system;
The local controller receiving a dimming control signal from the gateway;
Transmitting the motion signal to the local controller through a zigbee communication method or a bluetooth communication method by sensing the motion of the motion sensor;
Wirelessly transmitting the dimming control signal to a high-power automatic dimmer in a Zigbee or Bluetooth communication scheme when the wireless controller receives a motion signal from the motion sensor;
Power automatic dimming device wirelessly receiving a dimming control signal from the local controller and controlling dimming of the plurality of LED lamps according to the received dimming control signal,
Wherein the high power automatic dimming device wirelessly receives a dimming control signal from the local controller and dimming control the plurality of LED lamps according to the received dimming control signal,
The wireless module wirelessly receives the dimming control signal, the temperature sensor senses the ambient temperature, the illuminance sensor senses the ambient illuminance, the current transformer detects the amount of current input to the LED lamps, And a central processing unit (CPU) for controlling the dimming control by the local controller in consideration of the ambient temperature sensed by the temperature sensor, the ambient illuminance sensed by the illuminance sensor, and the amount of current output by the current sensor, And the PWM module PWM-controls the AC 220V AC power by the PWM signal to output the PWM signal to a power waveform of 120 Hz, and the filter is PWM-controlled by the MOSFET module. The AC 220V AC And the PWM noise of the power is removed and the LED lamps are output to the LED lamps. 7. The method of claim 6, wherein the large power automatic dimmer wirelessly receives a dimming control signal from the local controller and dimming control of the plurality of LED lamps according to the received dimming control signal comprises:
Wherein the CPU is configured to turn off the plurality of LED lamps and notify the server of the LED lamp when the amount of current detected by the current sensor is equal to or greater than a predetermined peak value. 8. The method of claim 7, wherein the large power automatic dimming device wirelessly receives a dimming control signal from the local controller and dimming control of the plurality of LED lamps according to the received dimming control signal,
Wherein the CPU is configured to turn off the plurality of LED lamps and notify the server when the ambient temperature sensed by the temperature sensor and the ambient illuminance sensed by the illuminance sensor are respectively equal to or greater than a predetermined peak value Remote control power dimming method for LED lamp. 9. The method of claim 8, wherein the large power automatic dimmer wirelessly receives a dimming control signal from the local controller and dimming control of the plurality of LED lamps according to the received dimming control signal comprises:
Wherein the CPU converts the dimming control signal into a three-phase control PWM signal so that dimming control can be performed by dividing the plurality of LED lamps into three groups. 10. The method of claim 9, wherein the large power automatic dimmer wirelessly receives a dimming control signal from the local controller, and dimming control of the plurality of LED lamps according to the received dimming control signal,
The CPU outputs a relatively low-output three-phase control PWM signal to the LED lamp group having a relatively high window intensity among the plurality of LED lamps, and a relatively high-output three-phase control PWM And outputting a signal to the remote control power dimming circuit for the LED lamp.

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