GB1309016A - Signal discriminating method and system - Google Patents
Signal discriminating method and systemInfo
- Publication number
- GB1309016A GB1309016A GB2302170A GB2302170A GB1309016A GB 1309016 A GB1309016 A GB 1309016A GB 2302170 A GB2302170 A GB 2302170A GB 2302170 A GB2302170 A GB 2302170A GB 1309016 A GB1309016 A GB 1309016A
- Authority
- GB
- United Kingdom
- Prior art keywords
- signal
- contact
- circuit
- detected
- frequency
- 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
- H02J13/00009—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 pulsed signals
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
-
- 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
- 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)
- Arrangements For Transmission Of Measured Signals (AREA)
- Control Of Stepping Motors (AREA)
Abstract
1309016 Signalling over power lines MATSUSHITA COMMUNICATION INDUSTRIAL CO Ltd and TOKYO ELECTRIC POWER CO 12 May 1970 [14 May 1969 (2)] 23021/70 Heading G4H In a signalling system of the kind in which a pulse of high frequency is superimposed on the current in power lines at a central station and an indicating contact at a remote consumer station changes the impedance of the circuit to that frequency so that the injected signal may be detected at the central station having an amplitude according to the indication at the remote station, the remote station is adapted to produce a reference signal with which the indicating signal may be compared to determine whether the indicating contact is in one position or the other. In the form of Fig. 3 and 4 power lines 14 connect the supply 116 to a consumer's load 113, the consumption of which is measured by a meter 110. The meter closes a contact 109 after each kilowatthour. The closure of the contact at a particular consumer is indicated in a particular time slot of the cycle, Fig. 4, by a contact 107 which closes in that time slot to connect a resonant circuit 106 across the lines, if switch 109 is also closed. The high-frequency signal is detected by a resonant circuit 103 which applies a signal to circuit 105 to start a synchronous motor 104. Contact 108 stops the motor after a complete cycle. Contacts 117 and 107 close as shown at k and l in Fig. 4 in the first and second halves of the time slot alloted to that remote station. Contact 107 connects the resonant circuit across the line and the high frequency signal injected at 101 is detected at 111 and applied to discriminator circuit 118. The amplitude of the detected signal depends on the line, the distance away from the central station, wherether the load is on and so on. In the second half the contact 107 closes. If contact 109 is closed the detected signal will be the same, if it is open the resonant circuit does not afford a path for the high frequency current and the detected signal is less. These conditions are shown in Fig. 4. The signal discriminator 118 consists of a timing control circuit and means to switch the reference signal in the first half of the time slot into a register where it is stored and used to produce a reference signal for comparing the read signal produced in the second half. In another form instead of using half the time slot to derive a reference signal two different frequencies are injected, the second frequency passing through a second resonant circuit connected with contact 117. The signals detected are separated in filters and the second frequency used to provide the reference level for discriminating the first. The system may be combined with a control circuit Fig. 9 comprising synchronous motor 804 which is started by detection of a pulse of signal frequency in resonant circuit 801. At a predetermined time, switch 807 closes and if a further pulse is then received resonance circuit 802 operates control circuit 810 to pick up relay 809, closing switch 812 (to energize the load 813) and switch 709 to signal that the load is switched on. In the second half of the slot contact 808 closes to allow a pulse at that instant to operate circuit 811 to disable relay 809. The operation of the relay 809 is monitored by the circuit including contact 709 as described above. (For Figures see next page.)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3863369A JPS5117705B1 (en) | 1969-05-14 | 1969-05-14 | |
JP3863069A JPS5039814B1 (en) | 1969-05-14 | 1969-05-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1309016A true GB1309016A (en) | 1973-03-07 |
Family
ID=26377899
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2302170A Expired GB1309016A (en) | 1969-05-14 | 1970-05-12 | Signal discriminating method and system |
Country Status (3)
Country | Link |
---|---|
US (1) | US3710373A (en) |
CA (1) | CA946493A (en) |
GB (1) | GB1309016A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2314432A (en) * | 1996-06-18 | 1997-12-24 | Motorola Inc | Data bus system, master module and slave module |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT962385B (en) * | 1972-07-04 | 1973-12-20 | Siemens Spa Italiana | HIGH FREQUENCY SIGNAL DISCONNECTION SYSTEM FROM CURRENT TO INDUSTRIAL FREQUENCY IN SYSTEMS USING MEDIA BETWEEN COMMON SIGNALS |
US3924224A (en) * | 1974-05-15 | 1975-12-02 | Sangamo Electric Co | Meter reading system |
US4527247A (en) * | 1981-07-31 | 1985-07-02 | Ibg International, Inc. | Environmental control system |
US4742475A (en) * | 1984-06-19 | 1988-05-03 | Ibg International, Inc. | Environmental control system |
US4800507A (en) * | 1986-12-15 | 1989-01-24 | Brown Christopher R | Proving safe operation |
EP0560071B1 (en) * | 1990-06-05 | 2000-08-23 | Siemens Metering Limited | Method of signalling |
US6313744B1 (en) * | 1998-03-25 | 2001-11-06 | Simplex Time Recorder Company | Alarm system with individual alarm indicator testing |
US6480510B1 (en) | 1998-07-28 | 2002-11-12 | Serconet Ltd. | Local area network of serial intelligent cells |
US6842459B1 (en) | 2000-04-19 | 2005-01-11 | Serconet Ltd. | Network combining wired and non-wired segments |
US7151968B2 (en) | 2001-11-01 | 2006-12-19 | Salton, Inc. | Intelligent coffeemaker appliance |
US20030083758A1 (en) * | 2001-11-01 | 2003-05-01 | Williamson Charles G. | Remote updating of intelligent household appliances |
US7069091B2 (en) | 2001-11-01 | 2006-06-27 | Salton, Inc. | Intelligent microwave oven appliance |
US20030083028A1 (en) * | 2001-11-01 | 2003-05-01 | Williamson Charles G. | Remote programming of radio preset stations over a network |
US20030080113A1 (en) * | 2001-11-01 | 2003-05-01 | Williamson Charles G. | Intelligent oven appliance |
IL154921A (en) * | 2003-03-13 | 2011-02-28 | Mosaid Technologies Inc | Telephone system having multiple distinct sources and accessories therefor |
CN107276459B (en) * | 2017-06-21 | 2019-11-08 | 常熟理工学院 | A kind of three-phase permanent magnet synchronous motor sensorless drive circuit |
AU2018311508A1 (en) * | 2017-08-02 | 2020-02-27 | Edge Electrons Limited | Device and method for monitoring power quality and performance of electricity distribution components in electricity distribution network |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2712128A (en) * | 1955-06-28 | woodruff | ||
US2582957A (en) * | 1945-11-26 | 1952-01-22 | Adolph W Borsum | Communication system |
US2833862A (en) * | 1953-09-11 | 1958-05-06 | William A Tolson | Multiplexing commutators |
US2753547A (en) * | 1954-03-02 | 1956-07-03 | Applied Science Corp Of Prince | Compensated data transmission |
US3082330A (en) * | 1958-07-25 | 1963-03-19 | Kinetics Corp | Generating arbitrary varying-amplitude step-wave using distributor having separate channel individual to each successive step |
US3264633A (en) * | 1961-03-22 | 1966-08-02 | Gen Electric | Automatic power meter reading over neutral power transmission line |
US3266018A (en) * | 1962-10-04 | 1966-08-09 | American Telephone & Telegraph | Telemetering system for reading remotely loacted utility meters |
US3268665A (en) * | 1963-03-04 | 1966-08-23 | Boeing Co | Automatic calibration apparatus for time sharing data transmission systems |
US3249883A (en) * | 1963-06-26 | 1966-05-03 | Beckman Instruments Inc | A. c. coupled pulse amplifier with floating input and grounded output |
US3461428A (en) * | 1965-08-30 | 1969-08-12 | Gen Time Corp | Remote control system including circuitry for superimposing higher frequency control signals on a supply line carrier wave |
-
1970
- 1970-05-11 US US00036368A patent/US3710373A/en not_active Expired - Lifetime
- 1970-05-12 GB GB2302170A patent/GB1309016A/en not_active Expired
- 1970-05-13 CA CA082,678A patent/CA946493A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2314432A (en) * | 1996-06-18 | 1997-12-24 | Motorola Inc | Data bus system, master module and slave module |
Also Published As
Publication number | Publication date |
---|---|
US3710373A (en) | 1973-01-09 |
CA946493A (en) | 1974-04-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1309016A (en) | Signal discriminating method and system | |
RU2060596C1 (en) | Receiving device which is controlled by transmitter | |
GB1285476A (en) | Telemetry circuit for an a.c. power system | |
US3080533A (en) | Phase-lock oscillator | |
GB1119118A (en) | Consumption metering apparatus | |
US3829682A (en) | Pulse coded railway signal system | |
GB935372A (en) | Improved transponder | |
US4399556A (en) | Device for locating audio surveillance apparatus | |
GB1366398A (en) | Signalling method and apparatus | |
GB1445002A (en) | Monitoring system | |
CA1047623A (en) | Inductive loop vehicle detector | |
JPS6046864B2 (en) | Signal transmission method | |
GB1425894A (en) | Telephone line testing devices | |
GB1504209A (en) | Measurement of motor speed when the supply to the motor is interrupted | |
GB1241860A (en) | A control system wherein use is made of electric signals having a single frequency | |
US3631399A (en) | Pulse code modulated transmitter-receiver transmission link | |
NO862686D0 (en) | PROCEDURE FOR TRANSFER OF MEASUREMENT VALUES IN A MONITORING SYSTEM. | |
SU843163A2 (en) | Pulsed frequency-phase discriminator | |
CA1065033A (en) | Inductive loop vehicle detector | |
US2540098A (en) | Relay circuit | |
US3144514A (en) | Recurring signalling condition detector | |
SU1260869A1 (en) | Device for measuring frequency of radio-telephone frequency-modulated signal | |
GB1377546A (en) | Ultrasonic detection apparatus | |
CA1098993A (en) | Inductively coupled keyable control circuit and keying circuit therefor using hybrid detection means | |
SU736117A1 (en) | Arrangement for determining stationary and unstationary portions of random process |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |