| 摘要 |
Industrial invention of an electronic system able to use electric power supply lines, of parallel and/or series type, for transmitting data, remote sensing, remote controls, remote readings and the like. The system, called LDS (Line Data System) does not use modulated carrier power-line waves, but an original, fast and secure transmission technique which utilizes the same power supply lines without need for any modification or the adoption of costly components. The field units execute the commands emitted by the control and transmit back the data of the phenomena detected by means of transducers. More than one system can operate simultaneously for different uses on the same line without interfering with each other. Where the system uses the lines of a public lighting system the field detection units remain operational during the day hours without requiring the use of booster batteries. |
