KR20010056051A - apparatus for control speed of communication in a power line system - Google Patents

apparatus for control speed of communication in a power line system

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Publication number
KR20010056051A
KR20010056051A KR1019990057452A KR19990057452A KR20010056051A KR 20010056051 A KR20010056051 A KR 20010056051A KR 1019990057452 A KR1019990057452 A KR 1019990057452A KR 19990057452 A KR19990057452 A KR 19990057452A KR 20010056051 A KR20010056051 A KR 20010056051A
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South Korea
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voltage
power line
pulse
zero
zero crossing
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KR1019990057452A
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Korean (ko)
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KR100337398B1 (en
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이강욱
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윤종용
삼성전자 주식회사
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Publication of KR20010056051A publication Critical patent/KR20010056051A/en
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Publication of KR100337398B1 publication Critical patent/KR100337398B1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/54—Systems for transmission via power distribution lines
    • H04B3/56—Circuits for coupling, blocking, or by-passing of signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2203/00—Indexing scheme relating to line transmission systems
    • H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
    • H04B2203/5404—Methods of transmitting or receiving signals via power distribution lines
    • H04B2203/5412—Methods of transmitting or receiving signals via power distribution lines by modofying wave form of the power source
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2203/00—Indexing scheme relating to line transmission systems
    • H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
    • H04B2203/5404—Methods of transmitting or receiving signals via power distribution lines
    • H04B2203/542—Methods of transmitting or receiving signals via power distribution lines using zero crossing information

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

PURPOSE: A device for controlling a communication speed of a power line communication system is provided to increase a communication speed up to 120 bps by checking a signal in the front/rear of a zero-crossing point after loading a 120 KHz pulse thereto. CONSTITUTION: When an alternating voltage applied to a primary of a step-down trans(11) from a power input(1), the first step-down trans(11) drops down the alternating voltage, and applies to a secondary of the trans(11). The dropped alternating voltage is full-waver rectified to a direct voltage by a bridge rectifier, and ripple and noise components are filtered by condensers(C1,C2). The direct voltage is inputted to a power terminal(VCC) of controller(30) after being converted to a constant voltage by a constant-voltage device(15), and the controller(30) initializes a power line communication system. At this time, transistor(TR1) turns on/off by the direct voltage inputted to a base terminal of the transistor(TR1) through resistors of voltage divider(R1,R2). According to the operation of the transistor(TR1), a high or low level voltage signal is inputted to an interruptor terminal(INT) of the controller(30) from a collector terminal of the transistor(TR1), and a zero-crossing pulse synchronized to the zero-crossing point of an alternating voltage is inputted to the interruptor terminal(INT). After receiving the zero-crossing pulse as an interrupt signal from a zero-crossing sensor(20), the controller(30) outputs a data communication signal to a power line control device(40) through an output terminal(PORT). The power line control device(40) loads 120 KHz pulse in the front/real of the zero-crossing point and backs the loaded pulse to the controller(30). On the basis of sensing the loaded pulse, the controller(30) outputs 1 data in case a signal exists in not the real but the front of the zero-crossing point, and outputs 0 data on the contrary.

Description

전력선 통신시스템의 통신속도 제어장치 {apparatus for control speed of communication in a power line system}Communication speed control device of power line communication system {apparatus for control speed of communication in a power line system}

본 발명은 제로크로싱 시점에 동기하여 전력선 통신을 제어하는 전력선 통신시스템에 관한 것으로, 특히 제로크로싱 시점의 전후에 신호를 실어주어 통신속도를 높이는 전력선 통신시스템의 통신속도 제어장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power line communication system for controlling power line communication in synchronization with a zero crossing time point, and more particularly, to a communication speed control apparatus of a power line communication system that raises a communication speed by giving a signal before and after a zero crossing time point.

일반적으로, 전력선망을 이용한 데이터통신시스템에 있어서, 별도의 고속데이터 전용회선을 설치하지 않고 기존의 전력선을 이용하여 다수의 사용자가 동시에 데이터통신을 실행하는데 있어 동작의 안정성을 위해 교류입력전원의 제로크로싱을 감지하게 된다.In general, in a data communication system using a power line network, zero AC input power is required for the stability of operation when multiple users simultaneously perform data communication using an existing power line without installing a separate high-speed data dedicated line. The crossing will be detected.

이때, 제로크로싱을 감지하는 장치는, 트랜지스터의 컬렉터 단자로부터 출력되는 제로크로싱 펄스의 하강 에지(falling edge)를 제로크로싱 시점으로 잡아 제로크로싱 위치를 감지하고, 이 감지된 제로크로싱신호에 동기하여 전력선 통신을 수행하였다.At this time, the device for detecting the zero crossing, by holding the falling edge of the zero crossing pulse output from the collector terminal of the transistor to the zero crossing time point to detect the zero crossing position, the power line in synchronization with the detected zero crossing signal Communication was performed.

상기 전력선 통신을 하는데 있어, 도 1(a)에 도시한 바와같이, 교류입력파형의 한 주기당 한 개의 120KHz 펄스만을 제로크로싱 시점에 실어줌으로서 제로크로싱 시점에서 신호가 있고 다음 제로크로싱 시점에서 신호가 없으면 '1'과 '0'이 되어 '1'의 데이터를 출력하고, 반대로 제로크로싱 시점에 신호가 없고 다음 제로크로싱 시점에 신호가 있으면 '0'과 '1'이 되어 '0'의 데이터를 출력하므로 도 1(b)에 도시한 파형의 통신신호를 출력하였다.In the power line communication, as shown in Fig. 1 (a), only one 120KHz pulse per period of the AC input waveform is loaded at the zero crossing time point so that there is a signal at the zero crossing time point and the signal at the next zero crossing time point. If there is not, it becomes '1' and '0' and outputs data of '1'. On the contrary, if there is no signal at zero crossing time and there is a signal at next zero crossing time, it becomes '0' and '1' and '0' data. Since the output of the communication signal of the waveform shown in Figure 1 (b).

그런데, 이와같은 종래 전력선 통신시스템의 통신속도 제어장치에 있어서는, 한 주기당 한 개의 120KHz 펄스만을 제로크로싱 시점에 실어주어 통신속도가 최대 60bps밖에 나올 수 없으므로 통신속도가 느리다는 문제점이 있었다.By the way, in the communication speed control apparatus of the conventional power line communication system, only one 120KHz pulse per cycle is loaded at the zero crossing time, so the communication speed can only come out up to 60bps, there is a problem that the communication speed is slow.

따라서, 본 발명은 상술한 종래의 문제점을 해결하기 위하여 안출된 것으로, 제로크로싱 시점의 전후단에 120KHz 펄스를 실어주어 제로크로싱 시점전에 신호가 있고 후에 없으면 '1'의 데이터를 출력하고, 제로크로싱 시점전에 신호가 없고 후에 있으면 '0'의 데이터를 출력하므로 통신속도를 120bps로 높이는 전력선 통신시스템의 통신속도 제어장치를 제공하는데 그 목적이 있다.Accordingly, the present invention has been made in order to solve the above-mentioned conventional problems, by placing a 120KHz pulse at the front and rear ends of the zero crossing point, and outputting a data of '1' if there is a signal before the zero crossing point and afterwards, Its purpose is to provide a communication speed control device of a power line communication system that increases the communication speed to 120bps because there is no signal before and a zero data is output after.

상기 목적을 달성하기 위하여 본 발명에 의한 전력선 통신시스템의 통신속도 제어장치는, 교류전압이 영전위 근처인 제로크로싱을 감지하는 제로크로싱감지수단과, 상기 제로크로싱감지수단에 의해 감지된 제로크로싱 시점에 동기하여 교류입력파형에 펄스를 실어주기 위한 데이터통신신호를 출력하는 제어수단을 구비한 전력선 통신시스템에 있어서, 상기 제어수단으로부터 출력되는 데이터통신신호를 인가받아 펄스를 발생하여 이 펄스를 상기 제로크로싱 시점의 전후단에 실어주므로 통신속도를 변환시키는 전력선제어소자를 추가로 구비한 것을 특징으로 한다.In order to achieve the above object, a communication speed control apparatus of a power line communication system according to the present invention includes a zero crossing detection means for detecting a zero crossing in which an AC voltage is near zero potential, and a zero crossing time detected by the zero crossing detection means. A power line communication system having a control means for outputting a data communication signal for applying a pulse to an AC input waveform in synchronization with a signal, comprising: receiving a data communication signal output from the control means to generate a pulse to generate the pulse; Since it is loaded at the front and rear ends of the crossing time, it is characterized by further comprising a power line control element for converting the communication speed.

도 1은 종래에 의한 전력선 통신시스템의 출력파형도로서,1 is an output waveform diagram of a conventional power line communication system,

도 1(a)는 제로크로싱 시점에 펄스가 실리는 파형도,1 (a) is a waveform diagram in which a pulse is loaded at the time of zero crossing;

도 1(b)는 제로크로싱 시점에 펄스가 실리는 통신신호의 파형도,1 (b) is a waveform diagram of a communication signal carrying a pulse at the time of zero crossing,

도 2는 본 발명에 의한 전력선 통신시스템의 통신속도 제어장치의 회로구성도,2 is a circuit diagram of a communication speed control apparatus of a power line communication system according to the present invention;

도 3은 본 발명에 의한 통신속도 제어장치의 출력파형도로서,3 is an output waveform diagram of a communication speed control apparatus according to the present invention,

도 3(a)는 교류입력전압의 파형도,3A is a waveform diagram of an AC input voltage;

도 3(b)는 전파직류전압의 파형도,3 (b) is a waveform diagram of full-wave DC voltage;

도 3(c)는 제로크로싱 펄스의 파형도,3 (c) is a waveform diagram of a zero crossing pulse,

도 3(d)는 제로크로싱 시점의 전후단에 펄스가 실리는 파형도,3 (d) is a waveform diagram in which pulses are loaded at the front and rear ends of the zero crossing point of time;

도 3(e)는 제로크로싱 시점의 전후단에 펄스가 실리는 통신신호의 파형도.Fig. 3 (e) is a waveform diagram of a communication signal carrying pulses at the front and rear ends of the zero crossing time point.

<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>

10 : 전원수단 13 : 브리지정류기10: power supply means 13: bridge rectifier

20 : 제로크로싱감지수단 30 : 제어수단20: zero crossing detection means 30: control means

40 : 전력선제어소자40: power line control element

이하, 본 발명의 일실시예를 첨부된 도면을 참조하여 상세히 설명한다.Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

본 발명에 의한 전력선 통신시스템의 통신속도 제어장치는, 도 2에 도시한 바와같이, 전원입력단(1)으로부터 입력되는 교류전압을 소정의 직류전압(5V)으로 변환하여 출력하는 전원수단(10)과, 상기 전원입력단(1)으로부터 입력되는 교류전압이 영전위 근처인 제로크로싱(zero-crossing)을 감지하는 제로크로싱감지수단(20)과, 상기 제로크로싱감지수단(20)으로부터 출력되는 제로크로싱 펄스(영전위 펄스신호)를 인터럽트신호로 인가받아 제로크로싱 시점의 전후단에 120KHz의 펄스를 실어주기 위한 데이터통신신호를 출력하는 제어수단(30)과, 상기 제어수단(30)으로부터 출력되는 데이터통신신호를 인가받아 120KHz의 펄스를 발생하여 제로크로싱 120KHz의 전후단에 펄스를 송신하고 제로크로싱 120KHz의 전후단에 실리는 펄스를 수신하여 상기 제어수단(30)으로 전송하므로 전력선 통신속도를 제어하는 전력선제어소자(40)로 구성되어 있다.The communication speed control apparatus of the power line communication system according to the present invention, as shown in Fig. 2, the power supply means 10 for converting the AC voltage input from the power input terminal 1 to a predetermined DC voltage (5V) and outputs it. And zero crossing detection means 20 for detecting zero crossing in which an AC voltage input from the power input terminal 1 is near zero potential, and zero crossing output from the zero crossing detection means 20. Control means (30) for receiving a pulse (zero potential pulse signal) as an interrupt signal and outputting a data communication signal for carrying a pulse of 120 KHz at the front and rear ends of the zero crossing point, and the data output from the control means (30). Receives a communication signal and generates a pulse of 120KHz to transmit pulses at the front and rear ends of the zero crossing 120KHz, and receives the pulses loaded at the front and rear ends of the zero crossing 120KHz and transmits them to the control means 30. Therefore, the power line control device 40 is configured to control the power line communication speed.

상기 전원수단(10)은 상기 전원입력단(1)으로부터 입력되는 교류전압을 1차측에 인가받아 소정의 저전압으로 감압하여 2차측으로 유기하는 감압트랜스(11)와, 상기 감압트랜스(11)에 의해 감압된 교류전압을 소정의 직류전압으로 전파정류하는 브리지정류기(13)와, 상기 브리지정류기(13)의 출력단에 접속된 역류방지용 다이오드(D1)와, 상기 브리지정류기(13)에 의해 전파정류된 직류전압에 포함된 리플성분(저주파성분) 및 노이즈성분(고주파성분)을 필터링하는 콘덴서(C1)(C2)와, 상기 콘덴서(C1)(C2)에 의해 필터링된 직류전압을 받아서 일정레벨의 정전압(5V)을 출력하는 정전압소자(15)와, 상기 정전압소자(15)로부터 출력되는 정전압신호에 포함된 노이즈성분을 필터링하도록 상기 정전압소자(15)의 출력단에 일측이 병렬접속되고 타측이 접지된 콘덴서(C3)로 구성되어 있다.The power supply means (10) is applied by the AC voltage input from the power input terminal (1) to the primary side to reduce the voltage to a predetermined low voltage to the secondary side and the decompression transformer (11) by the decompression transformer (11) The bridge rectifier 13 for full-wave rectifying the reduced AC voltage to a predetermined DC voltage, the backflow prevention diode D1 connected to the output terminal of the bridge rectifier 13, and the full-wave rectification by the bridge rectifier 13 A capacitor C1 (C2) for filtering the ripple component (low frequency component) and noise component (high frequency component) included in the DC voltage, and a constant voltage having a constant level by receiving the DC voltage filtered by the capacitors C1 (C2). One side is connected in parallel to the output terminal of the constant voltage element 15 and the other side is grounded to filter the noise component included in the constant voltage signal output from the constant voltage element 15 and the constant voltage element 15 outputting (5V). With condenser (C3) There is sex.

상기 제로크로싱감지수단(20)은 상기 전원수단(10)의 브리지정류기(13)에 의해 전파정류된 직류전압을 분압하는 분압저항(R1)(R2)과, 상기 브리지정류기(13)에의해 전파정류된 직류전압에 포함된 노이즈성분을 필터링하는 콘덴서(C4)와, 상기 분압저항(R1)(R2)에 의해 분압된 전압신호를 인가받아 턴온/턴오프동작하는 트랜지스터(TR1)와, 상기 트랜지스터(TR1)의 턴온동작시 교류전압의 제로크로싱에 동기하는 하이레벨의 전압신호를 상기 제어수단(30)에 입력하는 저항(R3)(R4)과, 상기 제어수단(30)에 입력되는 전압신호에 포함된 노이즈성분을 필터링하는 콘덴서(C5)로 구성되어 있다.The zero crossing detecting means 20 propagates by the voltage divider R1 and R2 for dividing the DC voltage rectified by the bridge rectifier 13 of the power supply means 10 and the bridge rectifier 13. A capacitor C4 for filtering the noise component included in the rectified DC voltage, a transistor TR1 operating on / off by receiving a voltage signal divided by the voltage divider R1 and R2, and the transistor In the turn-on operation of TR1, resistors R3 and R4 for inputting a high level voltage signal in synchronization with the zero crossing of the AC voltage to the control means 30, and a voltage signal input to the control means 30. It consists of a capacitor C5 for filtering the noise component contained in.

이하, 상기와 같이 구성된 전력선 통신시스템의 통신속도 제어장치의 작용효과를 설명한다.Hereinafter, the effect of the communication speed control device of the power line communication system configured as described above will be described.

먼저, 전원입력단(1)으로부터 도 3의 (a)에 도시한 파형의 교류전압이 전원수단(10)의 감압트랜스(11) 1차측에 인가되면, 감압트랜스(11)에서는 1차측에 인가된 교류전압을 소정의 교류전압으로 감압하여 2차측으로 유기시킨다.First, when the AC voltage of the waveform shown in FIG. 3A from the power input terminal 1 is applied to the primary side of the decompression transformer 11 of the power supply means 10, the decompression transformer 11 is applied to the primary side. The AC voltage is reduced to a predetermined AC voltage and induced to the secondary side.

상기 감압트랜스(11)에 의해 감압된 교류전압은 브리지정류기(13)를 통해 도 3의 (b)에 도시한 파형의 소정의 직류전압으로 전파정류되고, 브리지정류기(13)에 의해 전파정류된 직류전압에 포함된 리플성분 및 노이즈성분은 콘덴서(C1)(C2)를 통해 필터링된다.The AC voltage decompressed by the decompression transformer 11 is full-wave rectified through the bridge rectifier 13 to a predetermined DC voltage having the waveform shown in FIG. 3B, and is full-wave rectified by the bridge rectifier 13. The ripple component and noise component included in the DC voltage are filtered through the capacitors C1 and C2.

상기 콘덴서(C1)(C2)에 의해 필터링된 직류전압은 정전압소자(15)를 통해 일정레벨의 정전압(5V)으로 변환되어 제어수단(30)의 전원단자(VCC)에 입력되고, 상기 제어수단(30)에서는 전력선 통신시스템을 초기화시킨다.The DC voltage filtered by the capacitors C1 and C2 is converted into a constant voltage 5V at a constant level through the constant voltage element 15 and input to the power supply terminal VCC of the control means 30. In 30, the power line communication system is initialized.

이때, 상기 브리지정류기(13)에 의해 전파정류된 도 3의 (b)에 도시한 파형의 직류전압은 분압저항(R1)(R2)을 통해 트랜지스터(TR1)의 베이스단자에 인가되어트랜지스터(TR1)가 턴온 또는 턴오프동작한다.At this time, the DC voltage of the waveform shown in (b) of FIG. 3, which is full-wave rectified by the bridge rectifier 13, is applied to the base terminal of the transistor TR1 through the voltage divider R1 and R2, and thus the transistor TR1. ) Turns on or off.

상기 트랜지스터(TR1)가 턴온 또는 턴오프동작함에 따라 트랜지스터(TR1)의 컬렉터단으로부터 로우 또는 하이레벨의 전압신호가 제어수단(30)의 인터럽트단자(INT)에 입력되는데, 상기 제어수단(30)의 인터럽트단자(INT)에는 교류전압의 제로크로싱 시점에 동기하는 도 3의 (c)에 도시한 파형의 제로크로싱 펄스가 입력된다.As the transistor TR1 is turned on or off, a low or high level voltage signal is input from the collector terminal of the transistor TR1 to the interrupt terminal INT of the control means 30. The control means 30 The zero crossing pulse of the waveform shown in Fig. 3C is input to the interrupt terminal INT of the waveform in synchronization with the zero crossing timing of the AC voltage.

따라서, 상기 제어수단(30)에서는 제로크로싱감지수단(20)으로부터 출력되는 제로크로싱 펄스(영전위 펄스신호)를 인터럽트신호로 인가받아 제로크로싱 시점의 전후단에 120KHz의 펄스를 실어주기 위한 데이터통신신호를 출력단자(PORT)를 통해 전력선제어소자(40)에 출력한다.Therefore, the control means 30 receives a zero crossing pulse (zero potential pulse signal) output from the zero crossing detecting means 20 as an interrupt signal and transmits 120 KHz pulses at the front and rear ends of the zero crossing time. The signal is output to the power line control element 40 through an output terminal PORT.

이에 따라, 상기 전력선제어소자(40)에서는 제어수단(30)으로부터 출력되는 데이터통신신호를 인가받아 120KHz의 펄스를 발생하여 제로크로싱 시점의 전후단에 도 3의 (d)에 도시한 바와같이, 120KHz의 펄스를 실어준다.Accordingly, the power line control element 40 receives a data communication signal output from the control means 30 to generate a pulse of 120 KHz, and as shown in (d) of FIG. 3 before and after the zero crossing point of time. It carries 120KHz pulse.

다음, 전력선제어소자(40)에서는 제로크로싱 시점의 전후단에 실리는 펄스를 다시 수신하여 제어수단(30)으로 전송한다.Next, the power line control element 40 receives the pulses loaded on the front and rear ends of the zero crossing time point and transmits them to the control means 30.

따라서, 상기 제어수단(30)에서는 전력선제어소자(40)로부터 전송되는 펄스를 감지하여 제로크로싱 시점전에 신호(펄스)가 있고 제로크로싱 시점후에 없으면 '1'의 데이터를 출력하고, 제로크로싱 시점전에 신호가 없고 제로크로싱 시점후에 있으면 '0'의 데이터를 출력하여 도 3의 (e)에 도시한 파형의 통신신호가 출력되므로 통신속도가 종래에 비해 2배 정도 빨라져 최대 120bps까지 가능해진다.Therefore, the control means 30 detects a pulse transmitted from the power line control element 40 and outputs a data of '1' if there is a signal (pulse) before the zero crossing point and after the zero crossing point, and before the zero crossing point. If there is no signal and is after the zero crossing time point, the data of '0' is outputted and the communication signal of the waveform shown in FIG. 3E is outputted, so that the communication speed is about twice as fast as the conventional one, up to 120bps.

따라서, 상기 전력선제어소자(40)에서는 종래에 비해 2배의 속도로 전력선 통신을 제어하여 전력선 통신신호의 전송속도를 높인다.Therefore, the power line control element 40 controls the power line communication at twice the speed as in the prior art, thereby increasing the transmission rate of the power line communication signal.

상기의 설명에서와 같이 본 발명에 의한 전력선 통신시스템의 통신속도 제어장치에 의하면, 제로크로싱 시점의 전후단에 120KHz 펄스를 실어주어 제로크로싱 시점전에 신호가 있고 후에 없으면 '1'의 데이터를 출력하고, 제로크로싱 시점전에 신호가 없고 후에 있으면 '0'의 데이터를 출력하므로 통신속도를 120bps로 높인다는 효과가 있다.As described above, according to the communication speed control apparatus of the power line communication system according to the present invention, a 120KHz pulse is applied to the front and rear ends of the zero crossing time point, and if there is a signal before the zero crossing time point, and if it is not thereafter, the data of '1' is outputted. For example, if there is no signal before the zero crossing point and if it is later, the data is outputted as '0', which increases the communication speed to 120bps.

Claims (3)

교류전압이 영전위 근처인 제로크로싱을 감지하는 제로크로싱감지수단과, 상기 제로크로싱감지수단에 의해 감지된 제로크로싱 시점에 동기하여 교류입력파형에 펄스를 실어주기 위한 데이터통신신호를 출력하는 제어수단을 구비한 전력선 통신시스템에 있어서,Zero crossing detection means for detecting zero crossing in which the AC voltage is near zero potential, and a control means for outputting a data communication signal for applying a pulse to the AC input waveform in synchronization with the zero crossing time detected by the zero crossing detection means. In the power line communication system provided with, 상기 제어수단으로부터 출력되는 데이터통신신호를 인가받아 펄스를 발생하여 이 펄스를 상기 제로크로싱 시점의 전후단에 실어주므로 통신속도를 변환시키는 전력선제어소자를 추가로 구비한 것을 특징으로 하는 전력선 통신시스템의 통신속도 제어장치.And a power line control device for converting a communication speed by receiving a data communication signal outputted from the control means and generating a pulse and placing the pulse at the front and rear ends of the zero crossing point of time. Communication speed control device. 제 1 항에 있어서,The method of claim 1, 상기 전력선제어소자는 제로크로싱 시점의 전후단에 펄스를 실어주어 통신속도를 높이는 것을 특징으로 하는 전력선 통신시스템의 통신속도 제어장치.The power line control device is a communication speed control device of the power line communication system, characterized in that to increase the communication speed by applying a pulse to the front and rear ends of the zero crossing time. 제 1 항 또는 제 2 항에 있어서,The method according to claim 1 or 2, 상기 펄스는 120KHz인 것을 특징으로 하는 전력선 통신시스템의 통신속도 제어장치.And said pulse is 120 KHz.
KR1019990057452A 1999-12-14 1999-12-14 apparatus for control speed of communication in a power line system KR100337398B1 (en)

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Publication number Priority date Publication date Assignee Title
KR101029121B1 (en) * 2010-01-06 2011-04-13 한국표준과학연구원 Apparatus and method for transmitting/receiving time broadcasting information coded with two tone fsk using power-line broadcasting
KR101052082B1 (en) * 2009-12-31 2011-07-27 한국표준과학연구원 Power line broadcasting transmission / reception apparatus and transmission / reception method of visual broadcasting information using complex frequency code
KR101052083B1 (en) * 2009-12-31 2011-07-27 한국표준과학연구원 Power line broadcasting transmission / reception apparatus of visual broadcast information, program recording medium recording power line transmission / reception method and transmission / reception method of visual broadcasting information

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US4300126A (en) * 1980-04-11 1981-11-10 General Electric Co. Method and apparatus, for power line communications using zero crossing load interruption
US4658241A (en) * 1985-09-17 1987-04-14 Allied Corporation Surveillance system including transmitter and receiver synchronized by power line zero crossings
KR920011065B1 (en) * 1990-08-09 1992-12-26 삼성전자 주식회사 Data communication circuit and the same method
US5264823A (en) * 1990-09-28 1993-11-23 Motorola Lighting, Inc. Power line communication system

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Publication number Priority date Publication date Assignee Title
KR101052082B1 (en) * 2009-12-31 2011-07-27 한국표준과학연구원 Power line broadcasting transmission / reception apparatus and transmission / reception method of visual broadcasting information using complex frequency code
KR101052083B1 (en) * 2009-12-31 2011-07-27 한국표준과학연구원 Power line broadcasting transmission / reception apparatus of visual broadcast information, program recording medium recording power line transmission / reception method and transmission / reception method of visual broadcasting information
KR101029121B1 (en) * 2010-01-06 2011-04-13 한국표준과학연구원 Apparatus and method for transmitting/receiving time broadcasting information coded with two tone fsk using power-line broadcasting

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