EP1114525A2 - Dispositif et procede pour la formation d'un signal global, dispositif et procede pour la formation d'un signal de courant et d'un premier signal de communication, systeme de communication et procede pour la transmission d'un premier signal global et d'un second signal global - Google Patents

Dispositif et procede pour la formation d'un signal global, dispositif et procede pour la formation d'un signal de courant et d'un premier signal de communication, systeme de communication et procede pour la transmission d'un premier signal global et d'un second signal global

Info

Publication number
EP1114525A2
EP1114525A2 EP99969193A EP99969193A EP1114525A2 EP 1114525 A2 EP1114525 A2 EP 1114525A2 EP 99969193 A EP99969193 A EP 99969193A EP 99969193 A EP99969193 A EP 99969193A EP 1114525 A2 EP1114525 A2 EP 1114525A2
Authority
EP
European Patent Office
Prior art keywords
signal
communication
frequency range
overall
communication 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Withdrawn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
EP99969193A
Other languages
German (de)
English (en)
Inventor
Askold Meusling
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP1114525A2 publication Critical patent/EP1114525A2/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Withdrawn legal-status Critical Current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
    • 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
    • H04B2203/5416—Methods of transmitting or receiving signals via power distribution lines by adding signals to the 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
    • H04B2203/5462—Systems for power line communications
    • H04B2203/5466—Systems for power line communications using three phases conductors

Definitions

  • the invention relates to an arrangement and a method for forming an overall signal from a current signal and a first communication signal, as well as an arrangement and a method for forming a current signal and a first communication signal from an overall signal, and a communication system and a method for transmitting a first overall signal and a second Total signal in a communication system.
  • Such devices and arrangements as well as such a communication system are known from [1].
  • Such a device has a connection at which an overall electrical signal can be tapped.
  • the overall signal has a current signal (carrier frequency signal) and an electrical signal modulated onto the current signal.
  • the modulated electrical signal is a communication signal.
  • a communication signal is to be understood as an electrical signal which enables transmission of electronic data, for example the transmission of textual data, image data or video data.
  • any type of modulation can be used for modulation, e.g. an amplitude modulation, a frequency modulation or a phase modulation.
  • the device known from [1] has a coupling element which is coupled to the energy supply network.
  • the communication signal is obtained from the overall signal in the coupling element.
  • the communication signal is modulated onto the current signal, whereby the overall signal is formed.
  • a second connection is provided which is connected to the coupling element.
  • the communication signal can be tapped or fed at the second connection, depending on the operating mode of the coupling element.
  • a communication signal to be modulated which represents the communication data, is present at the second connection or is supplied to it.
  • FIG. 2 shows an energy supply network 201 to which a house 202 is connected.
  • a base station 203 known from [3] is connected to the energy supply network 201 via an interface 204.
  • the base station 203 is connected to a communication network 206 via a network interface 205.
  • the base station 203 has a processor 207 which is connected via a bus 208 to data conversion cards 209 which are also known from [3] and which in turn are connected via coaxial lines.
  • gen 210 are connected to the interface 204.
  • a medium-voltage / low-voltage transformer element 211 is also provided in the energy supply network 201.
  • a medium voltage is further understood to mean a voltage of several kilovolts (KV), usually 10 KV, and a low voltage is a normal operating voltage of approximately 230 V.
  • the house 202 is connected to the energy supply network 201 via a house interface 212.
  • the house interface 212 is connected to the known device described above, which is designated 213 in FIG.
  • a low-voltage signal which is transmitted to power lines 214 of the power supply network 201, is modulated onto the base station 203 by a communication signal, hereinafter referred to as the signal to be modulated.
  • the low voltage signal is referred to below as the carrier frequency signal.
  • the carrier frequency signal usually has 220 V and a frequency of 50 Hz.
  • the first signal is fed via the house interface 212 to the device 213 described above.
  • the carrier frequency signal 220 is supplied to an electrical counter 216 in a known manner, and the modulated signal 221, which has been demodulated by the carrier frequency signal, is sent via a coaxial line 217 fed to a first computer 218 and a second computer 219.
  • a disadvantage of this scenario is that the coaxial cable 217 must be laid in the house 202 from the device 213 to each computer unit 218, 219, i.e. In the house 202, new lines have to be laid in every room in which a computer is provided in order to enable data communication via the energy supply network 201. This leads to a considerable additional effort in the planning of the house 202 and it also leads to a considerable inflexibility in the planning and furnishing of the house 202.
  • the communication signal is modulated onto the current signal in a frequency range of a few MHz, usually in the range between 1 MHz and approximately 8 MHz.
  • the limitation of the frequency range is due to the attenuation curve of the transmission medium used. At about 8 MHz, the attenuation of the communication signal is so strong that it is impossible to transmit the communication signal over long distances.
  • a separate transmission medium for example a coaxial cable, is used to transmit a signal that requires a higher bandwidth.
  • the invention is therefore based on the problem of specifying an arrangement and a method for forming an overall signal from a current signal and a first communication signal, and an arrangement and a method for forming a current signal and a first communication signal from an overall signal, with which one increased flexibility in planning and furnishing a house as well as an improved use of bandwidth is achieved.
  • the invention is also based on the problem of a communication system and a method for transmitting an Most total signal and a second total signal in a communication system with which an increased flexibility in the planning and furnishing of a house and an improved use of bandwidth is achieved.
  • An arrangement for forming an overall signal from a current signal and a first communication signal comprises the following features: a) a first connection to which the current signal can be supplied, b) a second connection to which the first communication signal can be supplied, c) an overall connection to which the overall signal can be tapped, d) a coupling element for forming the overall signal from the current signal and the first communication signal, which coupling element is coupled to the first connection, the second connection and the overall connection, e) the coupling element being set up in such a way that at the formation of the overall signal for the first communication signal, a first frequency range and for a second communication signal, which second communication signal can be modulated onto the current signal, a second frequency range are provided, the first frequency range at least partially comprising a frequency range of higher frequencies than the second Frequency range.
  • An arrangement for forming a current signal and a first communication signal from an overall signal comprises the following features: a) a first connection from which the current signal can be tapped, b) a second connection from which the first communication signal can be tapped, c) one Overall connection to which the overall signal can be fed d) a coupling element for forming the current signal and the first communication signal from the overall signal, which coupling element is coupled to the first connection, the second connection and the entire connection, e) the coupling element being set up in such a way that a first is formed when the first communication signal is formed Frequency range and for a second communication signal, which second communication signal can be modulated onto the current signal, a second frequency range are provided, the first frequency range at least partially comprising a frequency range of higher frequencies than the second frequency range.
  • a communication system with a first communication unit, a second communication unit and a power supply network, from which a current signal is made available has the following features: for a first communication signal formed by the first communication unit, which is added to the current signal to form a first overall signal, a first frequency range is provided, for a second communication signal formed by the second communication unit, which is added to the current signal to form a second overall signal, a second frequency range is provided, the first frequency range at least partially comprises a frequency range of higher frequencies than the second frequency range .
  • a first frequency range is provided for the formation of the overall signal for the first communication signal and a second frequency range is provided for a second communication signal, which second communication signal can be modulated onto the current signal, the first frequency range at least partially includes a frequency range of higher frequencies than the second frequency range.
  • a first frequency range is provided for the formation of the first communication signal and a second frequency range is provided for a second communication signal, which second communication signal can be modulated onto the current signal, the first frequency range at least partially includes a frequency range of higher frequencies than the second frequency range.
  • a method for transmitting a first overall signal and a second overall signal in a communication system with a first communication unit, a second communication unit and a power supply network, from which a current signal is made available comprises the following steps: a first communication signal is formed by the first communication unit, which is added to the current signal to form a first overall signal,
  • a first frequency range is provided for the first communication signal in the first overall signal, the first overall signal is transmitted to the second communication unit,
  • a second communication signal is formed by the second communication unit, which is added to the current signal to form a second overall signal, a second frequency range is provided for the second communication signal in the second overall signal,
  • the second overall signal is transmitted to the first communication unit
  • the first frequency range comprises at least partially a frequency range of higher frequencies than the second frequency range.
  • the invention can clearly be seen in the fact that the communication signal is modulated onto the current signal in a frequency range which at least partially contains frequencies which are greater than the frequencies of the frequency range in which the communication signal has been transmitted up to now. It has been recognized that, in particular in the case of a larger house with several residential units within each residential unit, a distance from the respective connection of the residential unit to the power supply network to a computer unit has to be bridged that is sufficiently small so that the damping is not yet so strong is that a transmission of the communication signal would not be possible.
  • the second communication signal in the second frequency range is preferably modulated onto the current signal.
  • a modulation / demodulation unit is provided, which is coupled to the overall connection, with which the first communication signal and / or the second communication signal can be modulated onto the current signal, with which the overall signal is formed or with which the first communication signal and / or the second communication signal can be demodulated by the current signal.
  • the modulation / demodulation unit is preferably coupled to an electrical device, wherein the electrical device can be a computer (computer unit).
  • the electrical device can be a computer (computer unit).
  • Figure 1 is a sketch of a conversion unit according to the embodiment
  • FIG. 2 shows a sketch of an energy supply network with a base station and a house connected to the energy supply network with a device according to the prior art
  • FIG. 3 shows a sketch of an energy supply network with a base station and a house connected to the energy supply network with a device according to the exemplary embodiment
  • FIG. 4 shows a sketch of a diagram with which an attenuation curve of the frequencies used for the modulation of the second communication signal 401 and of the first communication signal 402 is described.
  • FIG. 3 shows, like FIG. 2, using the same reference numerals for the same components, the base station 203, which is connected to the energy supply network 201 via the interface 204. Furthermore, the house 202 is connected to the energy supply network 201 via the house connection 212.
  • FIG. 3 shows the house 202 with a first residential unit 301 and a second residential unit 310.
  • a first computer 302 is present in the first residential unit 301 and a second computer 311 is present in the second residential unit 310.
  • the first computer 302 is connected via a communication cable 303 with a first modulation / Demodulation unit 304 connected.
  • the first modulation / demodulation unit 304 is connected to a first conversion unit 306, which is also described below, via a second power cable 305.
  • the second computer 311 is connected via a third power cable 312 to a second modulation / demodulation unit 313 described in the following, the second modulation / demodulation unit 313 being configured in the same way as the first modulation / demodulation unit
  • the second modulation / demodulation unit 313 is connected to a second conversion unit 315, which is also described below, the second conversion unit 315 being configured in the same way as the first conversion unit 306.
  • the structure of the first conversion unit 306, 100 is shown in FIG. 1.
  • the first conversion unit 306, 100 has a first connection 101, to which a current signal 102 can be fed or tapped depending on the operating mode.
  • a second communication signal is modulated onto the current signal 102 as a carrier frequency signal in a first operating mode.
  • the communication described below takes place from the energy supply network 201 or the communication network 206 to the first computer 302. Furthermore, the first conversion unit 306, 100 has a second connection 103, to which, depending on the operating mode, a first communication signal 104 can be fed or tapped.
  • the first conversion unit 306, 100 has an overall connection 105, to which an overall signal 106 can be fed or tapped depending on the operating mode.
  • the overall signal 106 contains the current signal 102 as a carrier frequency signal and the second communication signal modulated onto the current signal 102.
  • the second communication signal is modulated onto the current signal 102 in a second frequency range from approximately one to approximately four to eight MHz.
  • FIG. 4 shows in a sketch a diagram 400 with which an attenuation curve 403 of the modulation frequencies of the second communication signal 401 and of the first communication signal 402 is described with an increasing frequency 404.
  • the diagram 400 shows the transmission properties of the energy distribution network 201, 305, 314 in the frequency domain, with the greater distances in the network 201 for the second
  • Communication signal 401 due to the attenuation only modulation frequencies up to approximately 1 to 8 MHz can be used and, in addition, transmission of a second communication signal is no longer possible.
  • modulation frequencies up to approximately 20 to 30 MHz can be used, which means that significantly more band width is available for the first communication signal 402. This is described by the attenuation curve of the first communication signal 402.
  • the attenuation increases in this First occurs in a range of approximately ten to twenty MHz and only becomes so strong at twenty MHz that the modulation frequencies of the first communication signal 401 can no longer be transmitted.
  • the range of approximately ten to twenty Mbps (megabits per second) is referred to below as the first frequency range.
  • the first conversion unit 306 is set up in such a way that the overall signal 106 in the second operating mode has the current signal 102 as carrier frequency signal and the first communication signal 402, 104 modulated onto the current signal 102.
  • the first communication signal 402, 104 is modulated onto the current signal 102 in the first frequency range, i.e. for the transmission of the first communication signal 402 within a residential unit, a frequency range is used that contains frequencies that are greater than the frequencies of the second frequency range.
  • the first conversion unit 306 also has a coupling element 107 coupled to the first connection 101, the second connection 103 and the overall connection 105.
  • the coupling element 107 contains a circuit arrangement 108 which is set up in such a way that in the first operating mode the first communication signal 104, 402 is modulated onto the current signal 102 in the first frequency range, thus forming the overall signal 106.
  • the coupling element 107 is set up such that the second communication signal in the second operating mode 401, which is modulated onto the current signal 102 in the second frequency range, is fed via a network to a converter / demodulator unit 203 which is connected to the central connection 320.
  • the first communication signal 402 and the second communication signal 401 are combined in a manner known per se and fed to the communication network 206.
  • the first computer 302 sends a request message 330 using the Transport Control Protocol / Internet Protocol (TCP / IP).
  • TCP / IP Transport Control Protocol / Internet Protocol
  • the request message 330 information from the Internet, in which the communication network 206 is configured, is requested.
  • the request message 330 is fed to the first modulation / demodulation unit 304.
  • the request message 330 is modulated onto the current signal 102 as a second communication signal 401, which forms the overall signal 506. The modulation takes place in the second frequency range.
  • the overall signal 506 is fed from the first modulation / demodulation unit 304 via the second power cable 305 to the overall connection 105 of the first conversion unit 306, 100.
  • the overall signal 106 is connected via the first connection 101 as a current signal 102 with a modulated second communication signal 401, a first connecting cable 340 to an energy supply network according to FIG. 2 and within this energy supply network as the second signal modulated on the current signal Communication signal transmitted.
  • a device 203 which demodulates the second communication signal modulated onto the current signal and feeds the request message 330 to the central connection 320.
  • the request message 330 is fed to the communication network 206.
  • the request message 330 is sent to further computers 360, 361, 362, 363, to which it is directed according to the unique Internet address (IP address), in this example to a first further computer 360 which is set up as an Internet server .
  • IP address unique Internet address
  • the first further computer 360 After receiving the request message 330, the first further computer 360 forms a response message 370, which contains the information requested by the first computer 302.
  • the first further computer 360 sends the response message 370 to the first computer 302.
  • the response message 370 is fed to the central connection 320 via the communication network 206.
  • the response message 370 is fed from the central connection 320 via a second connection cable 350 to the first conversion unit 306, which is likewise connected to the second connection cable 350, as the first communication signal 402.
  • the first communication signal 402 is modulated onto the current signal 102, which forms the overall signal 106.
  • the first communication signal 402 is modulated in the first frequency range.
  • the overall signal 106 is fed to the first modulation / demodulation unit 304.
  • the response message 370 is demodulated as the first communication signal 402 from the overall signal 106 and fed to the first computer 302.
  • Any communication protocol can be used for data, ie the methods and arrangements are not limited to the communication protocol according to the TCP-IP standard.

Landscapes

  • 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)

Abstract

Lors de la formation d'un signal global, il est prévu d'utiliser, pour le premier signal de communication, une première plage de fréquences, et, pour un second signal de communication, lequel peut être adapté par modulation au signal de courant, une seconde plage de fréquences, la première plage de fréquences comprenant au moins partiellement une plage de fréquences plus élevées que celles de la seconde plage de fréquences.
EP99969193A 1998-09-15 1999-09-01 Dispositif et procede pour la formation d'un signal global, dispositif et procede pour la formation d'un signal de courant et d'un premier signal de communication, systeme de communication et procede pour la transmission d'un premier signal global et d'un second signal global Withdrawn EP1114525A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19842226 1998-09-15
DE19842226 1998-09-15
PCT/DE1999/002743 WO2000016496A2 (fr) 1998-09-15 1999-09-01 Dispositif et procede pour la formation d'un signal global, dispositif et procede pour la formation d'un signal de courant et d'un premier signal de communication, systeme de communication et procede pour la transmission d'un premier signal global et d'un second signal global

Publications (1)

Publication Number Publication Date
EP1114525A2 true EP1114525A2 (fr) 2001-07-11

Family

ID=7881044

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99969193A Withdrawn EP1114525A2 (fr) 1998-09-15 1999-09-01 Dispositif et procede pour la formation d'un signal global, dispositif et procede pour la formation d'un signal de courant et d'un premier signal de communication, systeme de communication et procede pour la transmission d'un premier signal global et d'un second signal global

Country Status (4)

Country Link
EP (1) EP1114525A2 (fr)
JP (1) JP2002525907A (fr)
CN (1) CN1319281A (fr)
WO (1) WO2000016496A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6998962B2 (en) 2000-04-14 2006-02-14 Current Technologies, Llc Power line communication apparatus and method of using the same
US7804763B2 (en) 2005-04-04 2010-09-28 Current Technologies, Llc Power line communication device and method
JP5654495B2 (ja) * 2010-01-13 2015-01-14 パナソニックＩｐマネジメント株式会社 電力供給装置および車両充電システム

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3606354A1 (de) * 1986-02-27 1987-09-03 Bbc Brown Boveri & Cie Verfahren zur uebermittlung von daten ueber die leitungen eines stromversorgungsnetzes
GB9222205D0 (en) * 1992-10-22 1992-12-02 Norweb Plc Low voltage filter
GB2299494B (en) * 1995-03-30 1999-11-03 Northern Telecom Ltd Communications Repeater

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0016496A3 *

Also Published As

Publication number Publication date
JP2002525907A (ja) 2002-08-13
CN1319281A (zh) 2001-10-24
WO2000016496A3 (fr) 2000-06-08
WO2000016496A2 (fr) 2000-03-23

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