KR20120093741A - Remote dimming control and monitoring system of led street light using plc - Google Patents

Abstract

PURPOSE: A remote dimming control system for an LED street light using power line communication is provided to effectively control the dimming and the turn on and off of the LED street light by using power line communication in a remote main control center. CONSTITUTION: A protection circuit(301) protects a dimming controller(11a) from an excess current and a surge. A power line coupling part(302) and a power line communication part(303) communicate with a repeater through a power line. An LED constant current circuit(308) supplies a constant current to an LED lamp(11b) by the driving power generated from an LED driving SMPS circuit(307).

Description

Remote Dimming Control and Monitoring System of LED Street Light using PLC

The present invention relates to an LED street light illuminance remote control system using power line communication (PLC), and more particularly, a system for controlling on / off and dimming of an LED street light using power line communication at a remote location. It is about.

Street lamps are placed along the roadside for street lighting, traffic safety, or aesthetics, and are traditionally installed with metal halides or sodium. Street lamp remote control system, which assigns an identification number to each street lamp and controls each street lamp on / off (off) at the central control station.

That is, the conventional streetlight remote control system can only control the lighting or turning off each streetlight, it is not possible to precisely control the illumination according to the external illumination or traffic volume. That is, in the case of the conventional street light remote control system, some of the street lights are turned on and some are turned off to adjust the overall illuminance. When the illuminance is adjusted in such a manner, the dark and light sections are repeated to obtain uniform illuminance. There is a problem such as causing a traffic accident.

On the other hand, traditional street lamps made of metal halides or sodium lamps pose problems such as energy consumption and environmental pollution. Recently, LED street lamps have been replaced by LED street lamps. In addition, there is a need for a technique for more precise and uniform control of illuminance.

An object of the present invention devised to meet the needs of the prior art described above is to provide a system for controlling the lighting / lighting and illumination of a plurality of LED street lights using power line communication at a remote central control center.

LED street light illuminance remote control system using the power line communication according to the present invention for achieving the above object, the illumination controller for controlling the on / off and illuminance of the LED lamp provided in the LED street light, and the power line communication with the illumination controller In the LED street light illuminance remote control system using power line communication including a relay device to control the LED lamp,

The relay device and the illuminance controller each includes a power line coupling unit and a power line communication unit for mutual power line communication,

The power line communication unit may include a prefilter for filtering some frequency bands of the power line signal received from the power line coupling unit, a differential amplifier for stably differentially amplifying a gain of the frequency band filtered by the prefilter, and the differential amplified unit. Amplification & comparison for outputting a plurality of subband digital received signals by amplifying a main filter unit for separating a frequency band into a plurality of subbands and amplifying a plurality of subband received signals divided into the respective subbands and converting them into 1-bit digital values. And a reception signal processing unit for power line communication signal processing of a plurality of subband digital received signals inputted from the amplifying & comparing unit, and power line communication signal processing for transmission data so that the transmission data is included in each of the plurality of subbands. A transmission signal processor for modulating and generating a transmission signal; It is characterized by including a power drive unit for transmitting the transmission signal to the power line coupling portion.

As described above, according to the present invention, there is an effect of controlling the lighting / lighting off and illuminance of the LED street light by using power line communication.

1 is a block diagram illustrating a configuration of an LED street light illuminance remote control system using power line communication according to the present invention.
2 is an internal block diagram of the relay apparatus according to the present invention.
3 is a block diagram illustrating an internal configuration of an illuminance controller according to the present invention.
4 is a block diagram illustrating an internal configuration of a power line communication unit connected between a power line coupling unit and a microprocessor according to the present invention.
5 is a block diagram illustrating an internal configuration of a power line communication core unit according to the present invention.

Hereinafter, with reference to the accompanying drawings and described in detail the LED street light illuminance remote control system using power line communication according to an embodiment of the present invention.

1 is a block diagram illustrating a configuration of an LED street light illuminance remote control system using power line communication according to the present invention.

LED street light illuminance remote control system using the power line communication according to the present invention, the illumination controller 11a for directly controlling the on / off and illuminance of the LED (LED) lamp 11b provided in each LED street light 10 and And a relay device 12 which performs power line communication (PLC) with a plurality of illuminance controllers 11a to control on / off and illuminance of each of the plurality of LED lamps 11b, and the relay. A control server 14 communicating with a device 12 and a wireless communication network 13 to monitor the state of the plurality of LED street lights at a remote location and controlling the plurality of LED street lights 10 through the relay device 12, respectively. Include.

The control server 14 is provided in the central control center of the remote place is connected to the database for storing information and status, etc. for each LED street light (10). The wireless communication network 13 may be a CDMA network or a TRS network. The relay device 12 is installed in the street lamp distribution box, and communicates with the control server 14 of the central control center through the wireless communication network 13, and performs the power line communication with a plurality of illumination controllers (11a) each illumination controller (11a) Collecting the state of the LED street light through the transmission to the control server 14 and controls each roughness controller (11a) according to the control signal input from the control server (14). Here, the control signal transmitted from the control server 14 to each illuminance controller 11a includes an illuminance control signal, which is the illuminance of the LED lamp 11b from 0% (light off) to 100% (maximum). Lights in brightness).

2 is an internal block diagram of the relay apparatus according to the present invention.

The relay device according to the present invention includes a microprocessor 20, a drive power supply unit 21 for generating drive power from an external input power source and supplying the same to each component, and a control server 14 through a wireless communication network 13. Illumination controller of each LED street light 10 under the control of the wireless communication module 22 and GPS module 23 for receiving a GPS position (Global Positioning System) signal to determine the position, and the microprocessor 20 The power line coupling unit 24 and the power line communication unit 25 for power line communication with the 11a, and the magnetic contactor (MC) of electric power supplied to the LED street lights of each street light distribution box under the control of the microprocessor 26 are controlled. To detect the leakage current of the relay control unit 26, the ammeter (CT) 27 for detecting the current of the power line supplied to each of the LED street lights and providing it to the microprocessor 20, and the power line supplied to each of the LED street lights. A leakage current meter (ZCT) 28 provided to the microprocessor 20, a digital in / out circuit unit 29 for detecting the opening or closing of the distribution box door or the operation of the motion sensor and providing the microprocessor 20 to the microprocessor 20, and the microprocessor And a display unit 30 for displaying the operation state of the relay apparatus under the control of 20.

The repeater 12 may further include an RS485 drive for the microprocessor 20 to communicate with the electricity meter and the illumination sensor, and an RS232 drive for the microprocessor 20 to communicate with the GSM or TRS. have. Preferably, the wireless communication network 13 is a CDMA network and the wireless communication module 22 is a CDMA module. In this case, the RS232 drive may communicate with the control server 14 using a wireless communication network other than the CDMA network, that is, the GSM network. do.

The display unit 30 includes an LED display and an LCD display, and a communication state between the relay device 12 and the control server 14 and a communication state between the relay device 12 and each LED street light 10 and each LED street light ( The status of 10) is displayed.

In addition, the relay device 12 may further include a rechargeable battery so that the driving device 12 may be normally driven for a predetermined time even when an abnormality occurs in the driving power supply 21. The driving power supply unit 21 includes an overcurrent and surge protection circuit, a noise filter, and a switched-mode power supply (SMPS) to protect the relay device by blocking the overcurrent and surge voltage of the power line.

The power line coupling unit 24 separates a line separate from commercial power input to the driving power supply unit 21 and configures it in a three-phase four-wire form, and not only power line communication but also solid line in AC220V three-phase four-wire or AC220V single phase. It is preferable to be configured to enable the power line communication used.

The microprocessor 20 receives the illumination control signal of each LED street light through communication with the control server 14, and transmits the illumination control signal to the illumination controller of the corresponding LED street light. This illuminance control signal is a signal that causes illuminance of each LED lamp 11b to be 0% (light off) to 100% (lights up to the maximum brightness).

3 is a block diagram illustrating an internal configuration of the illuminance controller 11a according to the present invention.

A power line couple connected to a power line (AC input) to protect the illuminance controller 11a from overcurrent and surge, and a power line couple to perform power line communication from the power line input from which the overcurrent and surge voltage are removed from the protection circuit 301. Ring section 302 and power line communication section 303, SMPS power supply circuit 304 for generating driving power from power line input from which overcurrent and surge voltage is removed in protection circuit section 301, and overcurrent and surge in protection circuit section 301 The power factor correction circuit (PFC) 305 corrects the power factor so that the current and the voltage of the power line input from which the voltage is removed are in phase with each other, and are generated by the SMPS power supply circuit 304 and the power factor correction circuit 305. L for generating driving power for driving the LED lamp from the power line input whose power factor is corrected by the power factor correction circuit 305 and the noise & impedance filter 306 for separating impedance while reducing noise. ED drive SMPS circuit 307, LED constant current circuit 308 for supplying a constant current to the LED lamp (LED lamp) 11b from the drive power generated by the LED drive SMPS circuit 307, and the power line communication unit 303 A microprocessor 309 for performing power line communication with the relay device 12 and a power factor collection (PFC) driving blocking circuit for driving or driving the power factor correction circuit 305 under the control of the microprocessor 309. 310, an AD converter 311 that detects a leakage current from the leakage CT and provides it to the microprocessor 309, and a converter failure that detects a failure of the LED driving SMPS circuit 307 and provides it to the microprocessor 309. The illumination circuit 313 for controlling the intensity of the constant current supplied to the LED lamp 11b from the LED constant current circuit 308 under the control of the detection circuit 312, the microprocessor 309, and the LED lamp 11b. Load fault detection circuit 314 for detecting faults And an infrared ray (IR) circuit 315 for setting the device address of the illuminance controller 11a, and a plurality of LEDs 316 for indicating the state of the illuminance controller 11a and the power line communication state. .

The circuit operation of the above-described illuminance controller 11a will be described. The power line input is supplied to the power line coupling unit 302 and the impedance & noise filter 306 after the overcurrent and the surge voltage are removed through the protection circuit unit 301. The power line coupling unit 302 extracts a power line signal from the power line input, and the power line communication unit 303 extracts an illumination intensity control signal input from the relay device 12 from the power line signal and provides it to the microprocessor 309. The microprocessor 309 adjusts the pulse width of the pulse width modulation (PWM) signal of the illuminance control circuit 313 according to the illuminance control signal, and thus the intensity of the constant current supplied to the LED lamp 11b from the LED constant current circuit 308. To be adjusted. That is, when the illuminance of the LED lamp 11b is increased, the intensity of the constant current is increased, and when the illuminance of the LED lamp 11b is lowered, the intensity of the constant current is lowered. Of course, when the LED lamp 11b is turned off, the pulse width modulation signal of the illumination control circuit 313 is turned off so that the constant current is not supplied to the LED lamp 11b.

On the other hand, the microprocessor 309 detects the failure of the LED lamp 11b through the load fault detection circuit 314, and each of the LED driving SMPS circuits through the converter fault detection circuit 312 and the AD converter 311. 307 is detected and the leakage current is detected. The microprocessor 309 detects that the LED lamp 11b has failed in the load fault detection circuit 314 or that the LED driving SMPS circuit 307 has failed in the converter fault detection circuit 312 or in the AD converter 311. If the leakage current is detected and the LED lamp 11b cannot be turned on, or if the LED lamp 11b is to be turned off by the illuminance control signal input from the relay device, the PFC drive cutoff circuit 310 is operated to operate the power factor correction circuit. The driving of 305 is cut off. Of course, when the LED lamp 11b is normally turned on, the microprocessor 309 does not operate the PFC drive blocking circuit 310 regardless of the illuminance so that the power factor correction circuit 305 is normally driven.

The reason why the microprocessor 309 controls the PFC driving blocking circuit 310 to drive or block driving the power factor correction circuit 305 will be described.

The power factor correction circuit 305 is a circuit for reducing power consumption when the LED lamp 11b is turned on by making the voltage and current of the electric power supplied to the LED lamp 11b be in the same phase. However, even when the LED lamp 11b is turned off or cannot be turned on due to a failure, when the power factor correction circuit 305 is driven, unnecessary power consumption occurs due to the driving of the power factor correction circuit 305. In this case, in this case, the PFC drive blocking circuit 310 cuts off the drive of the power factor correction circuit 305 by the control of the microprocessor 309. Reduce.

In the present invention, the relay device 12 and the illumination controller 11a of the LED street light communicate through power line communication. To this end, the relay device 12 and the illuminance controller 11a include power line coupling units 24 and 302, power line communication units 25 and 303, and microprocessors 20 and 309, respectively.

4 is a block diagram illustrating an internal configuration of the power line communication units 25 and 303 connected between the power line coupling units 24 and 302 and the microprocessors 20 and 309 according to the present invention.

The power line coupling units 24 and 302 are connected to all three-phase four-wire (R, S, T and N) power lines, or any single-phase two-wire ((R or S or T) of the three-phase four-wire power lines and N, It is connected to the power line to transmit and receive the power line signal.

The power line communication units 25 and 303 stabilize the gain of the pre-filter 41 for filtering some frequency bands of the power line signals received from the power line coupling units 24 and 302 and the frequency band filtered by the pre-filter 41. And amplifying the differential amplifier 42 for differential amplification, the main filter unit 43 for separating the differentially amplified frequency band into a plurality of subbands, and a plurality of subband received signals separated for each subband, respectively. Amplification & comparison section 44 for converting to a 1-bit digital value, and subband digital reception signal inputted from the amplification & comparison section 44 to perform power line communication signal extraction to extract received data, and to extract the extracted received data into the microcomputer. A power communication core provided to the processors 20 and 309 and generating a transmission signal for power line communication by processing power line communication signals of the transmission data input from the microprocessors 20 and 309. A unit 46 and a power driver 45 for transmitting the transmission signal to the power line coupling unit (24, 302).

The power driver 45 includes a differential input and differential output amplifier (AMP). The output impedance of the amplifier is 7 ohm or less, the maximum current is 1Ap-p, and the power line signal is stably transmitted even in the low impedance environment of the power line. Allows remote receivers to reliably receive power line signals.

The operation of the power line communication units 25 and 303 configured as described above will be described. The prefilter 41 filters 20 to 400 kHz frequency bands of the power line signals received by the power line coupling units 24 and 302, and the differential amplifier 42 stabilizes the gain of the frequency band filtered by the prefilter 41. Amplify. The main filter unit 43 separates and filters the filtered frequency band into three subbands. Specifically, the main filter unit 43 separates three subbands of 110 to 195 Khz, 205 to 285 Khz, and 305 to 395 Khz to receive three sub bands. Get signal. The amplifying & comparing section 44 amplifies the three subband received signals separated by the main filter section 43 and converts them into 1-bit digital values to obtain a plurality of subband digital received signals. This 1-bit subband digital received signal contains the same frequency information as each subband received signal. The power line communication core unit 46 performs power line communication signal processing on the plurality of subband digital received signals to extract received data, and transmits the extracted received data to the microprocessors 20 and 309. A detailed process of the power line communication core unit 46 processing power line communication signals on a plurality of subband digital received signals to extract received data will be described later.

Meanwhile, the power line communication core unit 46 processes power line communication signals with respect to the transmission data input from the microprocessors 20 and 309, and transmits the data to a plurality of subbands (110 to 195 Khz, 205 to 285 Khz, and 305 to 395 Khz). The modulation is generated to generate a transmission signal, and transmits the generated transmission signal to the power driver 45. Then, the power driver 45 converts the transmission signal into a power line signal form and loads the transmission signal on the power line through the power line coupling units 24 and 302.

Here, the signal transmitted through the power line is modulated so that the transmission data is included in each of a plurality of frequency bands (subbands). The reason for this is that the power line rapidly increases the noise of a specific frequency band according to the load condition. Is generated, in which case it is difficult to receive a signal from the specific frequency band. For this reason, in the present invention, the transmitting side modulates the transmission data to be included in a plurality of frequency bands (for example, 110 to 195 Khz, 205 to 285 Khz, and 305 to 395 Khz), that is, three subbands, and transmits the same through the power line. The receiving side divides the received signal into three frequency bands (subbands), demodulates the received signal from each of the separated frequency bands, compares each other, and restores original received data. This increases the success rate of signal transmission because noise can be generated in a specific frequency band and a signal of the corresponding frequency band is damaged, since the original signal can be received and restored through another frequency band.

5 is a block diagram showing the internal configuration of the power line communication core unit 46 according to the present invention. The power line communication core unit 46 includes a transmission signal processor for processing power line communication signals input from the microprocessors 20 and 309 and providing them to the power driver 45, and a plurality of inputs from the amplifier & compare unit 44. And a reception signal processing unit for processing the subband digital reception signal of the power line communication signal, extracting the reception data, and providing the received data to the microprocessors 20 and 309. Here, the received data includes an illumination control signal.

The transmission signal processor divides the transmission data input from the microprocessors 20 and 309 into a plurality of blocks and attaches an error correction code (ECC) to each block, and the plurality of error correction codes. An interleaver 52 for dividing each of the appended blocks into a plurality of subblocks and rearranging the order of the plurality of subblocks, and storing a reference symbol including a plurality of subband intervals whose frequencies change with time; A modulator 53 for dividing the data rearranged in the interleaver 52 in units of n bits (where n is a natural number) and converting the n-bit data value into a data waveform having a predetermined length using the reference symbol; , A preamble 54 storing a preset synchronization waveform, a synchronization waveform received from the preamble 54, and data waveforms converted in n-bit units from the modulator 53. And a waveform transmitter 55 which combines successively, removes harmonic components using a window function, generates a transmission signal, and provides the power driver 45 to the power driver 45.

The synchronization waveform is composed of a predetermined number, for example, seven consecutive reference symbols, so that the time interval between any two reference symbols is different. Waveform transmitter 55 removes harmonic components by applying a window function between any two reference symbols.

The reference symbol is a first subband section that varies from the lowest frequency (110Khz) of the first frequency band (110-195Khz) to the highest frequency (195Kzh) over time, and the lowest of the second frequency band (205-285Khz) over time. The second sub band section that varies from frequency (205 kHz) to the highest frequency (285 Kzh), and the third sub band section that varies from the lowest frequency (305 Khz) to the highest frequency (395 Kzh) of the third frequency band (305 to 395 Khz) over time. It includes.

인 것이 바람직하다.The data waveform is composed of at least one continuous reference symbol that starts at a start point according to the n-bit data value and occurs during the predetermined length from the start point. Since the start point of the reference symbol is changed according to the n-bit data value, a data waveform of a predetermined length is generated. Thus, the first subband section within a preset length of the data waveform is generated according to the n-bit data value. And the position of the second sub band section and the third sub band section is different. Then, the receiving side can restore the n-bit data value according to the position of the first subband section, the second subband section, and the third subband section within a predetermined length of the data waveform. n is preferably 4, and the starting point of the reference symbol is based on a data value of n (= 4) bits.

Is preferably.

The reception signal processor includes a synchronization unit 56 which acquires synchronization by recognizing synchronization waveforms from the first subband digital reception signal to the third subband digital reception signal input from the amplification & comparison unit 44, and a frequency according to time. A demodulator for storing a reference symbol consisting of a first subband section to a third subband section, and demodulating n-bit data from a first subband digital reception signal to a third subband digital reception signal using the reference symbol; 57) an error correction code for the deinterleaver 58 for rearranging the order of the demodulated data in the demodulator 57 to the original state, and the data rearranged in the deinterleaver 58 to the original state. It includes a decoder 59 for error correction by using and to remove the error correction code to provide to the microprocessor (20, 309).

The demodulator 57 demodulates n-bit data from the first subband digital received signal by calculating a degree of correlation with the first subband digital received signal while varying the position of the first subband section. Compute the degree of correlation with the second subband digital reception signal while varying the position of the band section, demodulate n-bit data from the second subband digital reception signal, and vary the position of the third subband section. Compute a correlation between the third subband digital reception signal and demodulate n-bit data from the third subband digital reception signal, and demodulate the n-bit data and the second subband from the first subband digital reception signal. Comparing and combining the n-bit data demodulated from the digital received signal and the n-bit data demodulated from the third subband digital received signal, the final n-bit decoded. Extract the data.

The operation of the power line communication core section 46 described above will be described. The transmission data to be transmitted to the receiving side by the microprocessors 20 and 309 is performed by the power line communication signal processing in the transmission signal processing unit. Power line fluctuates greatly in power load, the noise temporarily increases according to the load fluctuation amount, and the attenuation of communication signal increases, so the transmitter needs to prepare for this. To this end, the present invention includes an encoder 51 and an interleaver 52. The encoder 51 divides transmission data input from the microprocessors 20 and 309 into a plurality of blocks and an error correction code (ECC) in each block. Error Correction Code is attached so that even if some data is damaged during power line communication, it can be recovered by using error correction code.

However, even if an error correction code is attached by the encoder 51, the number of error data that can be restored by this error correction code is limited. Therefore, if more than a recoverable number of errors occur in one block, the block cannot be restored. To this end, the interleaver 52 divides each of the plurality of error correction coded blocks into a plurality of subblocks and rearranges the plurality of subblocks of all the error correction coded blocks in a predetermined order. By dividing the error correction coded blocks into a plurality of subblocks and rearranging the order of the subblocks, even if the data is damaged by a temporary noise increase during power line communication, the continuous data can be prevented from being damaged.

The modulator 53 stores reference symbols formed of a first subband (110 to 195Khz) section and a third subband (305 to 395Khz) section whose frequency varies with time, and stores the rearranged data in the interleaver 52. n (where n is a natural number) is divided in units of bits, and the n-bit data value is converted into a data waveform having a predetermined length using the reference symbol. The data waveform is composed of at least one continuous reference symbol that starts at a start point according to the n-bit data value and occurs during the predetermined length from the start point.

The preamble 54 stores a preset synchronization waveform (consisting of a plurality of consecutive reference symbols having different time intervals between two symbols), and the waveform transmitter 55 converts the data converted in n-bit units in the modulator 53. Prior to transmitting the waveform, the synchronization waveform is received from the preamble 54 and transmitted. The modulator 53 then sequentially combines and transmits the data waveform converted in n-bit units. At this time, when the synchronization waveform and the data waveform are transmitted continuously, there is a fear that harmonic components of the waveform are generated. To this end, the waveform transmitter 55 removes harmonic components using a window function. As a result, the transmission data generated by the microprocessors 20 and 309 may be converted into a transmission signal for power line communication and transmitted to the receiving side through the power driver 45.

The power line signal received from the transmitting side is received by the power line communication core unit 46 through the pre-filter 41, the differential amplifier 42, the main filter unit 43, and the amplifying and comparing unit 44 described above. It is input to the signal processor.

The synchronization unit 56 obtains synchronization from the first subband digital receiving signal to the third subband digital receiving signal input from the amplifying & comparing unit 44, respectively.

The demodulator 57 stores a reference symbol including a first sub band 110 to 195 Khz section and a third sub band 305 to 395 Khz section in which frequency varies with time, similar to the modulator 53, and the reference symbol Demodulate n-bit data from the first subband digital receiving signal to the third subband digital receiving signal.

That is, the demodulator 57 demodulates n-bit data from the first subband digital received signal by calculating a correlation with the first subband digital received signal while varying the position of the first subband section. Calculate the correlation with the second subband digital reception signal while varying the position of the two subband sections, demodulate n-bit data from the second subband digital reception signal, and vary the position of the third subband section. And demodulating n-bit data from the third subband digital reception signal by calculating a degree of correlation with the third subband digital reception signal, and demodulating the n-bit data and the second demodulated data from the first subband digital reception signal. Comparing and combining the n-bit data demodulated from the subband digital received signal with the n-bit data demodulated from the third subband digital received signal, the final n ratio It extracts the data. That is, the demodulated n-bit data matched with the position of the subband section having the highest correlation with each received subband digital received signal, and compares and combines three n-bit data to extract the final n-bit data. It is preferable that n is 4.

The deinterleaver 58 rearranges the demodulated data in the demodulator 57 to the original state by performing the operation of the interleaver 52 in the reverse order.

The decoder 59 removes the error correction code attached from the encoder of the transmitting side while performing error correction on the data rearranged to the original state by the deinterleaver 58, and then removes the microprocessor 20,309. To provide.

Claims (8)

In the LED street light illuminance remote control system using a power line communication including an illumination controller for controlling the on / off and illuminance of the LED lamp provided in the LED street light, and a relay device for controlling the LED lamp by power line communication with the illumination controller In
The relay device and the illuminance controller each includes a power line coupling unit and a power line communication unit for mutual power line communication,
The power line communication unit may include a prefilter for filtering some frequency bands of the power line signal received from the power line coupling unit, a differential amplifier for stably differentially amplifying a gain of the frequency band filtered by the prefilter, and the differential amplified unit. Amplification & comparison for outputting a plurality of subband digital received signals by amplifying a main filter unit for separating a frequency band into a plurality of subbands and amplifying a plurality of subband received signals divided into the respective subbands and converting them into 1-bit digital values. And a reception signal processing unit for power line communication signal processing of a plurality of subband digital received signals inputted from the amplifying & comparing unit, and power line communication signal processing for transmission data so that the transmission data is included in each of the plurality of subbands. A transmission signal processor for modulating and generating a transmission signal; LED street lamp illumination remote control system using power line communication, characterized in that, including the power drive unit to pass to said power line coupling portion transmission signals. The encoder of claim 1, wherein the transmission signal processor divides the transmission data into a plurality of blocks and attaches an error correction code to each block, and divides each of the plurality of error correction coded blocks into a plurality of subblocks. An interleaver for rearranging the order of subblocks of the subblocks, and a reference symbol consisting of a plurality of subband sections whose frequencies change with time, and dividing the rearranged data in the interleaver by n bits (where n is a natural number). A modulator for converting the n-bit data value into a data waveform having a predetermined length using the reference symbol, a preamble storing a preset synchronization waveform, a synchronization waveform stored in the preamble, and n bits in the modulator. Continuously combine data waveforms converted into units to generate a transmission signal and provide it to the power driver. Comprises a wave transmitter,
And the data waveform comprises at least one continuous reference symbol that is determined from a start point according to the n-bit data value and occurs during the predetermined length from the start point. 3. The LED street light remote control system according to claim 2, wherein the synchronization waveform is composed of a predetermined number of consecutive reference symbols having different time intervals between symbols. 3. The LED street light remote control system using power line communication according to claim 2, wherein the waveform transmitter removes harmonic components using a window function. 3. The apparatus of claim 2, wherein the reception signal processor comprises a synchronization unit for obtaining synchronization from a plurality of subband digital received signals inputted from the amplification & comparison unit, and a plurality of subband sections whose frequencies change with time. A demodulator for storing a symbol and demodulating n-bit data from the plurality of subband digital received signals using the reference symbol, a deinterleaver for rearranging the order of the demodulated data in the demodulator to the original state; LED street light illuminance remote control system using a power line communication comprising a decoder for error correction by using an error correction code for the data rearranged in the interleaver to remove the error correction code. The method of claim 5, wherein the reference symbol is composed of a first subband period to a third subband period, and receives the first subband digital reception signal to the third subband digital reception signal from the amplification and comparison unit,
The demodulator demodulates n-bit data from the first subband digital received signal by calculating a degree of correlation with the first subband digital received signal while varying a position of the first subband period, and a second subband period. Compute a degree of correlation with the second subband digital reception signal while varying the position of the signal, demodulate n-bit data from the second subband digital reception signal, and vary the position of the third subband section. Calculate a correlation between the band digital received signal and demodulate n-bit data from the third subband digital received signal, and demodulate the n-bit data and the second subband digital received signal from the first subband digital received signal. Compares and combines the demodulated n-bit data with the demodulated n-bit data from the third subband digital received signal and combines the final n-bit data. LED street lamp illumination remote control system using power line communication, characterized in that to extract. The illuminance controller of claim 1, wherein the illuminance controller comprises: a power factor correction circuit for correcting a power factor by bringing the current and voltage of the electric power supplied to the LED lamp into the same phase; A microprocessor which receives and generates a pulse width modulated signal according to the illuminance control signal and controls the power factor correction circuit to be driven only while the LED lamp is normally turned on, and the power factor corrected by the power factor correction circuit. The LED driving SMPS circuit for generating a driving power for driving an LED lamp, and receiving the pulse width modulation signal to generate a constant current according to the pulse width of the pulse width modulation signal from the driving power generated by the LED driving SMPS circuit LED constant current circuit for supplying the LED lamp, and of the microprocessor LED street light illuminance remote control system using power line communication, characterized in that it comprises a PFC drive blocking circuit for driving or driving the power factor correction circuit under control. 8. The PFC driving circuit of claim 7, wherein the PFC driving blocking circuit comprises: a photocoupler including a light emitting portion and a light receiving portion; a first switching element for supplying or blocking power to the light emitting portion of the photocoupler under the control of the microprocessor; LED street light illumination remote control system using a power line communication, characterized in that it comprises a second switching element for shutting off the driving power supplied to the power factor correction circuit while power is supplied to the light emitting portion of the photocoupler.

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