EP1135758A1 - Dispositif de transmission a ligne d'energie asynchrone - Google Patents

Dispositif de transmission a ligne d'energie asynchrone

Info

Publication number
EP1135758A1
EP1135758A1 EP00902167A EP00902167A EP1135758A1 EP 1135758 A1 EP1135758 A1 EP 1135758A1 EP 00902167 A EP00902167 A EP 00902167A EP 00902167 A EP00902167 A EP 00902167A EP 1135758 A1 EP1135758 A1 EP 1135758A1
Authority
EP
European Patent Office
Prior art keywords
pulse
impulse
power line
data signal
signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP00902167A
Other languages
German (de)
English (en)
Inventor
Seung-Dol Kim
Chang-Bok Joo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JOO CHANG BOK
Original Assignee
JOO CHANG BOK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by JOO CHANG BOK filed Critical JOO CHANG BOK
Publication of EP1135758A1 publication Critical patent/EP1135758A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/54—Systems for transmission via power distribution lines
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00—Electric signal transmission systems
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00—Electric signal transmission systems
    • G08C19/16—Electric signal transmission systems in which transmission is by pulses
    • G08C19/22—Electric signal transmission systems in which transmission is by pulses by varying the duration of individual pulses
    • 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
    • H04B2203/5425—Methods of transmitting or receiving signals via power distribution lines improving S/N by matching impedance, noise reduction, gain control
    • 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
    • H04B2203/5429—Applications for powerline communications
    • H04B2203/5433—Remote metering
    • 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
    • H04B2203/5429—Applications for powerline communications
    • H04B2203/5441—Wireless systems or telephone
    • 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
    • H04B2203/5429—Applications for powerline communications
    • H04B2203/5445—Local network
    • 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
    • H04B2203/5429—Applications for powerline communications
    • H04B2203/5458—Monitor sensor; Alarm systems

Definitions

  • the present invention relates to a data transmission apparatus through a network, and more particularly, to an asynchronous power line transmission apparatus for transmitting an impulse radio data signal through a power line.
  • Power line communication refers to a communication method using an AC 110V/220V power line as a communication media, for which communication equipments are communicated through the power line without installation of an extra telephone line or a dedicated line for data communication.
  • a power line transmission apparatus in use for the power line communication is applied to a high-speed power line communication modem, a power line communication unit of various sensors or driving apparatus, a unit of a sensor for measuring the physical quantity of electric power water or gas, a power line communication unit for constructing a high speed communication network (i.e., LAN, etc ) or for an industrial automation, or an applied field such as an Internet automatic telemetering
  • the power line communication systems employ a carrier synchronizing method to per orm communication
  • the communication method such as the FSK or the PSK adopted between transmitting/receiving terminals is disadvantageous in that due to the noise environment around the power line and the loading l effects of various loads connected to the power line the impedance that is a line constant, is much varied, so that a signal transmission rate is low and a signal detection is not so reliable
  • the low signal transmission rate through the power line and the low reliability in the signal detection are also resulted from a difficulty in synchronously 0 controlling a signal transmitted through the power line because of the hne characteristics change as a transmission channel or the noise
  • the communication system should be noise- resistant and the problem of the synchronization controlling should be solved.
  • the present invention proposes a method of transmitting a 1 -cycle sinusoidal shock pulse (referred to as an 'impulse data signal, hereinafter), that is, an 5 impulse data signal.
  • a 'impulse data signal referred to as an 'impulse data signal, hereinafter
  • the impulse data signal refers to a signal of which time average is O' and its pulse time width is below scores of [nsec], having characcteristics that it is evenly transmitted regardless of variation of the impedance, that is, a line constant, due to the environmental noise 10 of the power line, working and variation of loads of various electrical devices
  • an object of the present invention is to provide an asychronous power line transmission apparatus which is capable of transmitting a data at an ultra-high speed with reliability by employing a i signal detecting method of asychronous system for the impulse data signal transmitting method, and capable of simply constructing a transmitting/receiving apparatus
  • an asynchronous power line transmission apparatus including a transmitting circuit having an impulse data signalizing circuit for converting a transfer data pulse from a digital terminal such as a personal computer to an impulse data signal and transmitting the impulse data signal to the other party through a power line, and a receiving circuit having an amplifying and level clipping unit for receiving an impulse data signal transmitted from the 5 other party through the power line by its receiving terminal, removing a noise amplifying the impulse data signal to a certain level and clipping the impulse data signal by above a certain level, an impulse data signal separating and detecting unit for separating a positive (+) impulse and a negative (-) impulse of a transferred pulse corresponding a positive
  • a pulse reproducing unit for setting the positive (+) pulse interval of the impulse data signal separating and detecting unit as a positive (+) set pulse and the negative (-) pulse interval as a positive (+) reset pulse, arranging the pulses to set-reset pair of pulses and reset-set pair of pulses corresponding to 1 -cycle i s impulse data signal on time basis, selecting only a first pulse of each pair of pulses so that if the selected pulse is a set pulse a high level signal pulse is generated while if the selected pulse is a reset pulse, a low level pulse signal is generated, to thereby reproduce a transfer data pulse signal and transmit it to a PC interface 0
  • the positive edge and the negative edge of the data pulse are converted to an impulse data signal having a mutually inverted potential to be transmitted so that the transmission characteristics are constantly maintained regardless of the background noise around the power line or the load variation of the power line
  • the impulse noise pulse can be separated with the impulse data signal of a high frequency
  • a noise removing unit that employs a cascaded 2-stage processing frequency separating method in consideration of even a random particular noise, a i s reliability in reproducing the data pulse by the data pulse reproducing unit is highly improved and a ultra-high data transmission can be accomplished by the transceiver system of the impulse data signal having the duration of below [nsec]
  • Figure 1 is a schematic view showing a construction of a network adopting a general power line transfer system in accordance with a conventional art
  • Figure 2 is a schematic view showing a construction of a power line transmission apparatus in accordance with the present invention.
  • FIG. 3 is a view showing waveforms of input and output signal of each circuit of Figure 2 in accordance with the present invention
  • Figure 1 is a schematic view showing a construction of a network adopting a general power line transmission system which includes a single-phase two-wire power line 104 for supplying power, power line transmitting/receiving devices 103 and 105 for transmitting and receiving data through the power line 104, and interface units 102 and 106 for transmitting and receiving data between terminal equipments such as personal computers 101 and 107.
  • Figure 2 is a schematic view showing a construction of a power line transmission apparatus in accordance with the present invention
  • the asychronous power line transmission apparatus of the present invention includes a transmitting circuit consisting of an impulse circuit 130 for respectively converting a positive edge and a negative edge of an output pulse to an impulse pulse (an impulse signal) having a constant duration so as to transfer a data pulse transmitted by a clock generator of a predetermined frequency and an impulse data signal circuit 135 for receiving the impulse signal and converting it to an impulse data signal suitable for transmission through a power line 140, a receiving circuit consisting of a receiving signal transforming and noise removing unit 150 for receiving the impulse data signal transmitted from the other party (impulse data signal circuit 135) through the power line 140 and removing its noise, an amplifying and level clipping unit 160 for amplifying the impulse data signal outputted from the receiving signal transforming and noise removing unit 150 to a certain level and clipping the amplified impulse data signal by above a certain level to remove a noise again, an impulse data signal separating and detecting unit 170 for separating the output signal from the amplifying and level clipping unit 160 into
  • the impulse data signal circuit 135 includes a pulse transformer
  • the impulse signal outputted from the impulse data signal circuit 135 is a shock pulse signal of 1 -cycle or of 1/2-cycle sinusoidal that has been mutually phase-inverted
  • the impulse circuit of the transmitting circuit When a data pulse as shown in Figure 3A is generated and transmitted by a clock generator of the PC 110 having a certain data transmission rate through the interface 120 to the transmitting circuit, the impulse circuit of the transmitting circuit generates a positive (+) impulse having a predetermined duration corresponding to the positive edge and the negative edge of the data pulse and outputs it to the impulse data signal circuit 135 Upon receipt of the impulse signal from the impulse circuit 130, as shown in Figure 3B, the impulse data signal circuit 135 converts the positive edge of the data pulse to an impulse data signal with 1 cycle of positive (+) and negative (-) (or 1/2 cycle of positive (+)) having a certain duration from scores of pico seconds ([psec]) to scores of nano seconds ([nsec])
  • the impulse data signal circuit 135 converts the negative edge of the data pulse to a phase-inverted (the opposite to the phase of a signal obtained from the positive edge) impulse data signal with 1 cycle of negative (-) and positive (+) (or 1/2 cycle of negative (-)) having a certain duration from scores of pico seconds ([psec] to scores of nano seconds ([nsec])
  • the impulse data signal circuit 135 transmits the generated impulse data signal through the power line 140 to the other party
  • the receiving signal transforming and noise removing unit 150 The receiving signal transforming and noise removing unit 150
  • the amplifying and level clipping unit 160 Upon receipt of the impulse data signal from the receiving signal transforming and noise removing unit 150, the amplifying and level clipping unit 160 amplifies the impulse data signal to a certain level and clips the amplified impulse data signal to have a signal above a certain level so as to remove a noise
  • the positive (+) clipping impulse data signal as shown in Figure 3C
  • the negative (-) clipping impulse data signal as shown in Figure 3D
  • the impulse data signal separating and detecting unit 170 outputs the positive (+) impulse and the negative (-) impulse (a set signal and a reset signal) that were separated and detected by the amplifying and level clipping unit 160 to the data pulse reproducing unit 180
  • the data pulse reproducing unit 180 arranges the positive (+) pulse and the negative pulse (-) (the set signal and the reset signal) as separated and detected as a pair of the positive (+) set and reset pulses and a pair of the positive (+) reset and a set pulses corresponding to the 1 -cycle impulse data signal on a time basis
  • the data pulse reproducing unit 180 selects only a first pulse of each pulse pair, so that when the selected pulse is a set pulse the data pulse reproducing unit 180 generates a high level pulse signal while the selected pulse is a reset pulse, it generates a low level pulse signal, to thereby reproduce the data pulse signal transmitted through the power line and output the reproduced data pulse signal through the interface unit 120 to the PC 110
  • the asynchronous power line transmission apparatus transmits and receives the data through the power line
  • the amplitude of the random impulsive noise pulse that may be generated when a load of the power line is varied has a high level of about 20 ⁇ 50dB, higher by 10-300 times than the amplitude of the power line background noise having an amplitude of micro voltage unit ([ ⁇ V]), and the time-width of the impulsive noise pulse has a low frequency characteristic represented in a micro seconds ([ ⁇ sec]) But since the time-width of the impulse data signal has a high frequency characteristic below scores of nano seconds ([nsec]), the noise pulse can be removed by filtering through the frequency separating method
  • the noise removing unit adopting the cascaded two-stage processing of frequency separating method in consideration of even the random particular noise completely removes the noise, so that the data pulse reproducing unit can reproduce the reliable data pulse Also, the data can be transmitted at an ultra-high speed owing to the transmitting method that transmits the impulse data signal having a time-width of below scores of nano seconds ([nsec])
  • asynchronous power line transmission apparatus of the present invention thanks to the low signal attenuation characteristic of the power line and little signal decaying effect in an electric concentric-plug with respect to the impulse data signal transmitted having a certain time-width, a low level signal can be transmitted through the power line Also since the level of the transmitted signal is low, an electromagnetic interference (EMI) problem does not occur, and when the data is transmitted to a remote location, its constant signal transmission characteristic can be maintained
  • the asynchronous power line transmission apparatus can be applied to an ultra-high speed power line communication network (LAN) construction within 2-3 km radius, a CCTV network construction, a factory automation construction, an underground wireless relay network construction, and home appliance information network construction, or also can be applied to control various electromechanical apparatus and to a telemetering field
  • LAN ultra-high speed power line communication network
  • CCTV network construction within 2-3 km radius
  • factory automation construction a factory automation construction
  • underground wireless relay network construction an underground wireless relay network construction
  • home appliance information network construction or also can be applied to control various electromechanical apparatus and to a telemetering field

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • 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)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Dc Digital Transmission (AREA)

Abstract

Ce dispositif de transmission à ligne d'énergie asynchrone produit des signaux de données radio d'impulsion au niveau de fronts montants et de fronts descendants d'impulsions de données et transmet ces signaux, par le canal d'une ligne d'énergie, à un autre dispositif de transmission à ligne d'énergie asynchrone. Ce dispositif de transmission à ligne d'énergie asynchrone reçoit, de plus, des signaux de données radio d'impulsion émis par l'autre dispositif de transmission à ligne d'énergie asynchrone, écrête les niveaux de signaux de données radio d'impulsion, positifs et négatifs, afin de supprimer un bruit présent dans les signaux de données radio d'impulsion, respectivement, reconstruit des paires constituées, d'une part, d'une impulsion définie positive à partir des signaux de données radio d'impulsion et, d'autre part, d'une impulsion redéfinie positive à partir des signaux de données radio d'impulsion négatifs et reproduit les impulsions de données transmises par l'autre dispositif de transmission à ligne d'énergie asynchrone en ne sélectionnant qu'une première impulsion de chaque paire d'impulsions si l'impulsion sélectionnée est une impulsion définie positive. Une impulsion de signal de haut niveau est produite et, si l'impulsion sélectionnée est une impulsion redéfinie, c'est un signal d'impulsion de faible niveau qui est produite.
EP00902167A 1999-09-21 2000-01-22 Dispositif de transmission a ligne d'energie asynchrone Withdrawn EP1135758A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR9940687 1999-09-21
KR1019990040687A KR100336638B1 (ko) 1999-09-21 1999-09-21 비동기 전력선 전송장치
PCT/KR2000/000048 WO2001022380A1 (fr) 1999-09-21 2000-01-22 Dispositif de transmission a ligne d'energie asynchrone

Publications (1)

Publication Number Publication Date
EP1135758A1 true EP1135758A1 (fr) 2001-09-26

Family

ID=19612453

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00902167A Withdrawn EP1135758A1 (fr) 1999-09-21 2000-01-22 Dispositif de transmission a ligne d'energie asynchrone

Country Status (8)

Country Link
EP (1) EP1135758A1 (fr)
JP (1) JP2003510867A (fr)
KR (1) KR100336638B1 (fr)
CN (1) CN1314031A (fr)
AU (1) AU2329200A (fr)
IL (1) IL139423A0 (fr)
TW (1) TW488137B (fr)
WO (1) WO2001022380A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3925213B2 (ja) * 2002-01-24 2007-06-06 富士通株式会社 漏洩電磁界抑圧方法並びに漏洩電磁界抑圧送信方法及び装置
KR20040023309A (ko) * 2002-09-11 2004-03-18 김재홍 비동기식 고유 주파수방식을 이용한 전력선통신 방법 및 그장치
GB2393370B (en) * 2002-10-02 2004-10-20 Artimi Ltd Communication methods & apparatus
JP4565163B2 (ja) * 2006-04-28 2010-10-20 独立行政法人産業技術総合研究所 インパルス伝送方法及び受信装置
TWI401900B (zh) * 2008-04-21 2013-07-11 Integrated Technology Express Inc 依據雜訊特性分割週期的方法
CN102820872A (zh) * 2012-08-27 2012-12-12 中国电子科技集团公司第五十四研究所 一种数字异步脉冲无线低抖动传输方法
CN104363033B (zh) * 2014-09-24 2019-03-19 宁波创元信息科技有限公司 一种采用脉冲调制的电力线通信方法
CN110868242B (zh) * 2018-10-12 2022-04-19 南方电网数字电网研究院有限公司 一种基于异步通信的数据采集方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4556864A (en) * 1982-08-26 1985-12-03 Roy Joseph J Apparatus and method for communicating digital information on AC power lines
US4813057A (en) * 1984-12-03 1989-03-14 Charles A. Phillips Time domain radio transmission system
US4953206A (en) * 1986-11-17 1990-08-28 At&T Bell Laboratories Methods of and apparatus for providing substantially error-free transmitted data
JPH01190143A (ja) * 1988-01-26 1989-07-31 Matsushita Electric Works Ltd データ伝送方式
JP2706481B2 (ja) * 1988-09-05 1998-01-28 松下電器産業株式会社 データ伝送装置
KR940009159B1 (ko) * 1992-01-16 1994-10-01 삼성전자 주식회사 액정 디스플레이의 칼라 필터
JP2787976B2 (ja) * 1994-04-04 1998-08-20 株式会社アイオイ・システム 二線式送受電通信方法及び装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0122380A1 *

Also Published As

Publication number Publication date
TW488137B (en) 2002-05-21
AU2329200A (en) 2001-04-24
IL139423A0 (en) 2001-11-25
JP2003510867A (ja) 2003-03-18
KR20010028436A (ko) 2001-04-06
CN1314031A (zh) 2001-09-19
KR100336638B1 (ko) 2002-05-16
WO2001022380A1 (fr) 2001-03-29

Similar Documents

Publication Publication Date Title
US5554968A (en) Data communication using power lines
US8223880B2 (en) System and method for power line communication
EP1432099A3 (fr) Dispositif et méthode de contrôle, destinés à la gestion de communications entre plusieurs appareils électriques sur un réseau domestique d'alimentation électrique
WO1999007162A8 (fr) Gestion de la consommation pour les services telephoniques traditionnels et la transmission de donnees en modulation
EP0923202A3 (fr) Procédé de transmission d'information de contrôle de la puissance et dispositif d'émission et de réception
JPH01500867A (ja) 電力線通信装置
IT1320621B1 (it) Metodo, sistema ed apparati per la trasmissione di dati su reteelettrica
WO2012078600A2 (fr) Système et procédé permettant d'assurer les communications dans une source d'énergie sans fil
WO1994006229A1 (fr) Seuil adaptatif utilise dans un systeme de communication a spectre etale
EP1135758A1 (fr) Dispositif de transmission a ligne d'energie asynchrone
WO2004113676A3 (fr) Systeme de detection et procede pour communiquer des donnees entre un dispositif de fond et un lieu eloigne
EP2813074B1 (fr) Schéma à impédance variable pour la communication filaire grande vitesse
US20020024425A1 (en) System for transmitting information over a power distribution network, particularly for use in connection with domestic appliances
WO2002011377A3 (fr) Appareil et procede de transmission de donnees
US8797150B2 (en) Method and system for power line networking for industrial process control applications
KR20080039622A (ko) 전력선 통신용 브리지 회로를 이용한 공유 네트워크
CN215268269U (zh) 一种直流电源线载波通信系统电路
KR20020019683A (ko) 비동기 무선통신장치
KR20030037768A (ko) 비동기 전력선 통신장치
CN113206686A (zh) 一种直流电源线载波通信系统电路
KR20030004696A (ko) 에러검출 자동 보정 시스템 방식에 의한 양방향 전력선통신 제어 시스템 및 방법
Mazlan et al. Real-time communication routing protocol for home automation via power line
KR920013960A (ko) 다중전송매체간의 데이타 통신회로
Veerakumar et al. Wireless Networking for Sugar Industries through PLCC Technique
JPH06244762A (ja) 電力線搬送通信方式

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20001102

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 20020314