GB2140659A - Cash flow monitoring system - Google Patents
Cash flow monitoring systemInfo
- Publication number
- GB2140659A GB2140659A GB08412482A GB8412482A GB2140659A GB 2140659 A GB2140659 A GB 2140659A GB 08412482 A GB08412482 A GB 08412482A GB 8412482 A GB8412482 A GB 8412482A GB 2140659 A GB2140659 A GB 2140659A
- Authority
- GB
- United Kingdom
- Prior art keywords
- data
- carrier frequency
- pulse train
- carrier
- power
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/403—Bus networks with centralised control, e.g. polling
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
- H04B3/542—Systems for transmission via power distribution lines the information being in digital form
-
- 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
- H04B2203/5408—Methods of transmitting or receiving signals via power distribution lines using protocols
-
- 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
- H04B2203/5429—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
-
- 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
- H04B2203/5491—Systems for power line communications using filtering and bypassing
-
- 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
- H04B2203/5495—Systems for power line communications having measurements and testing channel
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Pipeline Systems (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
- Small-Scale Networks (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
A computerized monitoring system which incorporates the power lines (60) that provide electrical power to the remote devices (12) as the physical communications medium of a serial data bus for the computer system. The system comprises a central computer (10) and a plurality of computerized sensor modules (80) within the individual remote devices. The central computer and each of the sensor modules (80) has associated with it a respective data link (70, 87) for coupling respective signal generating and receiving means (65, 67, 82, 85) to the power distribution lines (60) and for manipulating the signals to and from a form suitable for transmission on the power distribution lines. Phase shift keying is used wherein binary bits of data are represented as 180<o> phase shifts of the pulses in a carrier pulse train. A data transmission rate of approximately 15,000 baud with a carrier frequency of 120 KHz is typical. A polling signal includes a preamble of pure carrier frequency, followed by the serial number of the device being polled, by the data (or instructions) defining the message content. Each data link has its own clock for generating a pulse train at a frequency very close to the common carrier frequency, and includes means for bringing its own carrier frequency pulse train approximately into a predetermined phase relationship with the carrier train that is appearing on the power lines.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/US1982/001334 WO1984001482A1 (en) | 1982-09-27 | 1982-09-27 | Cash flow monitoring system |
Publications (3)
Publication Number | Publication Date |
---|---|
GB8412482D0 GB8412482D0 (en) | 1984-06-20 |
GB2140659A true GB2140659A (en) | 1984-11-28 |
GB2140659B GB2140659B (en) | 1986-03-05 |
Family
ID=22168229
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB08412482A Expired GB2140659B (en) | 1982-09-27 | 1982-09-27 | Cash flow monitoring system |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0119999A1 (en) |
JP (1) | JPS59501808A (en) |
AU (1) | AU555336B2 (en) |
GB (1) | GB2140659B (en) |
WO (1) | WO1984001482A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2227453A (en) * | 1988-12-30 | 1990-08-01 | Alcatel Business Systems | Franking machine communication system |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU579363B2 (en) * | 1984-04-17 | 1988-11-24 | Electricity Trust Of South Australia, The | A Bi-Directional Multi-Frequency Ripple Control System |
GB8912276D0 (en) * | 1989-05-27 | 1989-07-12 | Allen John | Data communication apparatus |
US5218552A (en) * | 1990-07-30 | 1993-06-08 | Smart House, L.P. | Control apparatus for use in a dwelling |
GB9415594D0 (en) * | 1994-08-02 | 1994-09-21 | Ptf Consultants Ltd | Improvements in and relating to remote monitoring and signalling |
CN115865683B (en) * | 2023-03-02 | 2023-05-23 | 山东创安交通预警工程有限公司 | Intelligent community equipment management system |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1512857A (en) * | 1974-09-13 | 1978-06-01 | Bally Mfg Corp | Monitoring system for use with amusement game devices |
US4311986A (en) * | 1978-09-13 | 1982-01-19 | The Bendix Corporation | Single line multiplexing system for sensors and actuators |
US4300126A (en) * | 1980-04-11 | 1981-11-10 | General Electric Co. | Method and apparatus, for power line communications using zero crossing load interruption |
-
1982
- 1982-09-27 WO PCT/US1982/001334 patent/WO1984001482A1/en unknown
- 1982-09-27 JP JP50318182A patent/JPS59501808A/en active Pending
- 1982-09-27 GB GB08412482A patent/GB2140659B/en not_active Expired
- 1982-09-27 AU AU90504/82A patent/AU555336B2/en not_active Ceased
- 1982-09-27 EP EP19820903219 patent/EP0119999A1/en not_active Withdrawn
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2227453A (en) * | 1988-12-30 | 1990-08-01 | Alcatel Business Systems | Franking machine communication system |
GB2227453B (en) * | 1988-12-30 | 1993-03-31 | Alcatel Business Systems | Franking system |
Also Published As
Publication number | Publication date |
---|---|
GB8412482D0 (en) | 1984-06-20 |
JPS59501808A (en) | 1984-10-25 |
AU555336B2 (en) | 1986-09-18 |
EP0119999A1 (en) | 1984-10-03 |
AU9050482A (en) | 1984-04-24 |
GB2140659B (en) | 1986-03-05 |
WO1984001482A1 (en) | 1984-04-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |