GB1341025A - Data transmission over mains supplies - Google Patents
Data transmission over mains suppliesInfo
- Publication number
- GB1341025A GB1341025A GB5470070A GB1341025DA GB1341025A GB 1341025 A GB1341025 A GB 1341025A GB 5470070 A GB5470070 A GB 5470070A GB 1341025D A GB1341025D A GB 1341025DA GB 1341025 A GB1341025 A GB 1341025A
- Authority
- GB
- United Kingdom
- Prior art keywords
- amplitude
- pulse
- half cycle
- sequence
- gate
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00007—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using the power network as support for the transmission
- H02J13/0001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using the power network as support for the transmission using modification of a parameter of the network power signal
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/121—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using the power network as support for the transmission
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mobile Radio Communication Systems (AREA)
- Electronic Switches (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Selective Calling Equipment (AREA)
Abstract
1341025 Signalling over power circuits ENGLISH ELECTRIC CO Ltd 12 Nov 1971 [17 Nov 1970] 54700/70 Heading G4H [Also in Divisions H3-H5] In a system of signalling over power circuits by reducing the amplitude of selected half cycles of a given polarity of the supply waveform, a receiver for the signals compares each half cycle of the given polarity with the preceding half cycle and produces pulses of normal amplitude, reduced amplitude, or increased amplitude dependent on whether the current half cycle is equal to, of lesser amplitude, or of greater amplitude than the previous half cycle of that polarity. A detector then produces an output only when a reduced amplitude pulse is followed immediately by an increased amplitude pulse. Preferably the reduction of half cycle amplitude is carried out on a predetermined sequence of half cycles to call up a particular receiver and each receiver includes a pulse counting circuit producing a characteristic sequence of pulses which is compared with the incoming sequence to determine if a match exists. As described the power supply waveform is applied to terminal 15, Fig. 2, so that the positive peaks charge up capacitor C1 which slowly discharges through R1 so that each positive peak of normal amplitude results in a pulse of current of uniform amplitude flowing into capacitor C1 while a half cycle of reduced amplitude will result in little or no current flow and a succeeding half cycle of normal amplitude will cause a current pulse of double amplitude. The resulting voltage across R1 is differentiated and applied to transistor T1, which provides a signal on P1 having a pulse at the peak of every half cycle of normal or increased amplitude, and also to transistor T2 which is biased so that its output P2 comprises a pulse only on the first normal amplitude half cycle after a reduced amplitude half cycle, i.e. during the double amplitude charging pulse. An overall receiver is described with respect to the logic circuit of Fig. 4 in which block 21 represents the circuit of Fig. 2. The bi-stables Q1 and Q2 are set by the output P1 and P2 respectively of circuit 21 and reset by a timing pulse derived from the incoming waveform by K1. S1 is normally permanently set until a pulse P1 is missed, due to the occurrence of a reduced amplitude half cycle of the power waveform, allowing a clock pulse through the "and" gate to reset bi-stable S1. S1<SP>1</SP> output gates through the succeeding Q2 pulse, following the reduced amplitude half cycle, to an "exclusive-or" gate 40. If a pulse is not present on the output of gate 37 of a sequence generator the pulse from gate 22 passes through at a time determined by "and" gates 41 and 42, to reset the sequence generator counter A1-A6. Counter A subsequently counts up the clock pulses, fed through gate 43, to cause the generation of a predetermined sequence of pulses at the "or" gate 37. Only if the sequence received from the line is identical with that generated by the counter, A1-A6, will the counter complete its count without being reset, so as to generate an output on terminal A6. The interconnections between the gates 25 to 28 and 33 to 36 are adjustable to provide for generation of different sequence and in addition the connection can be adjusted after recognition of a transmitted sequences so that repetitions of the sequence will not cause a further operation but a different predetermined sequence will cause a further operation, e.g. to allow switching on and switching off of apparatus by the receiver.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5470070 | 1970-11-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1341025A true GB1341025A (en) | 1973-12-19 |
Family
ID=10471819
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5470070A Expired GB1341025A (en) | 1970-11-17 | 1970-11-17 | Data transmission over mains supplies |
Country Status (6)
Country | Link |
---|---|
AU (1) | AU461445B2 (en) |
CH (1) | CH543836A (en) |
DE (1) | DE2156705B2 (en) |
FR (1) | FR2114026B1 (en) |
GB (1) | GB1341025A (en) |
ZA (1) | ZA717607B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6111918A (en) * | 1995-04-04 | 2000-08-29 | Gotaas; Einar | Two-way data communicating method and system |
JP2000341884A (en) * | 1999-04-07 | 2000-12-08 | Stmicroelectronics Sa | Electromagnetic transponder operating by very close coupling |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3338808A1 (en) * | 1983-10-26 | 1985-05-15 | Diehl GmbH & Co, 8500 Nürnberg | Changeover device between a network and load circuits |
DE3909064A1 (en) * | 1989-03-20 | 1990-09-27 | Poelzl Helmut | Mains isolator |
DE9106677U1 (en) * | 1991-05-31 | 1991-07-25 | Incos Gmbh, 2000 Hamburg, De | |
DE19731150A1 (en) * | 1997-07-21 | 1999-02-25 | Elektrobau Oschatz Gmbh & Co K | Method and circuit arrangement for operating and monitoring discontinuously operated electrical consumers via power lines |
FR2780220A1 (en) | 1998-06-22 | 1999-12-24 | Sgs Thomson Microelectronics | TRANSMISSION OF DIGITAL DATA ON AN ALTERNATIVE POWER LINE |
FR2780221B1 (en) * | 1998-06-22 | 2000-09-29 | Sgs Thomson Microelectronics | TRANSMISSION OF AN OPERATING INSTRUCTION BY AN ALTERNATIVE POWER SUPPLY LINE |
FR2792134B1 (en) | 1999-04-07 | 2001-06-22 | St Microelectronics Sa | DISTANCE DETECTION BETWEEN AN ELECTROMAGNETIC TRANSPONDER AND A TERMINAL |
US6650226B1 (en) | 1999-04-07 | 2003-11-18 | Stmicroelectronics S.A. | Detection, by an electromagnetic transponder reader, of the distance separating it from a transponder |
FR2792135B1 (en) | 1999-04-07 | 2001-11-02 | St Microelectronics Sa | VERY CLOSE COMPLAGE OPERATION OF AN ELECTROMAGNETIC TRANSPONDER SYSTEM |
FR2792132B1 (en) | 1999-04-07 | 2001-11-02 | St Microelectronics Sa | READING TERMINAL OF AN ELECTROMAGNETIC TRANSPONDER OPERATING IN VERY CLOSE COUPLING |
FR2792136B1 (en) | 1999-04-07 | 2001-11-16 | St Microelectronics Sa | DUPLEX TRANSMISSION IN AN ELECTROMAGNETIC TRANSPONDER SYSTEM |
FR2808942B1 (en) | 2000-05-12 | 2002-08-16 | St Microelectronics Sa | VALIDATION OF THE PRESENCE OF AN ELECTROMAGNETIC TRANSPONDER IN THE FIELD OF A PHASE DEMODULATION READER |
FR2809235A1 (en) | 2000-05-17 | 2001-11-23 | St Microelectronics Sa | ANTENNA FOR GENERATING AN ELECTROMAGNETIC FIELD FOR TRANSPONDER |
US20030169169A1 (en) | 2000-08-17 | 2003-09-11 | Luc Wuidart | Antenna generating an electromagnetic field for transponder |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE716969C (en) * | 1940-06-20 | 1942-02-02 | Aeg | Remote control system |
-
1970
- 1970-11-17 GB GB5470070A patent/GB1341025A/en not_active Expired
-
1971
- 1971-11-12 ZA ZA717607A patent/ZA717607B/en unknown
- 1971-11-15 DE DE2156705A patent/DE2156705B2/en not_active Ceased
- 1971-11-16 AU AU35757/71A patent/AU461445B2/en not_active Expired
- 1971-11-17 FR FR7141207A patent/FR2114026B1/fr not_active Expired
- 1971-11-17 CH CH1672771A patent/CH543836A/en not_active IP Right Cessation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6111918A (en) * | 1995-04-04 | 2000-08-29 | Gotaas; Einar | Two-way data communicating method and system |
JP2000341884A (en) * | 1999-04-07 | 2000-12-08 | Stmicroelectronics Sa | Electromagnetic transponder operating by very close coupling |
Also Published As
Publication number | Publication date |
---|---|
AU461445B2 (en) | 1975-05-08 |
CH543836A (en) | 1973-10-31 |
ZA717607B (en) | 1972-08-30 |
FR2114026B1 (en) | 1976-12-03 |
DE2156705A1 (en) | 1972-05-18 |
FR2114026A1 (en) | 1972-06-30 |
AU3575771A (en) | 1973-05-24 |
DE2156705B2 (en) | 1981-06-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
429A | Application made for amendment of specification (sect. 29/1949) | ||
429H | Application (made) for amendment of specification now open to opposition (sect. 29/1949) | ||
429D | Case decided by the comptroller ** specification amended (sect. 29/1949) | ||
PCNP | Patent ceased through non-payment of renewal fee |