Abb Research Ltd.

Power Plus Communications Ag

Josef Lehmann

Bernhard Deck

Daniel A Matter

Franz Zurfluh

Jakob Rhyner

Bernhard Doser

Bruno Sabbattini

Paul Rudolf

Ate Postma

Oddleif Westby

Stefan Ramseier

Marko Veselcic

In a data transmission system for a pipeline which is electrically conductive at least in sections, the pipeline itself forms a data line. For this purpose, a coupling element is present for the modulation of electrical signals onto a potential of the pipeline. A cost-effective data transmission system is created which can be used in remote regions.

Data transmission system for pipelines

The invention relates to a simplified and cost-effective apparatus for injecting signals into electrical power lines at the high-voltage or medium-voltage level. A coupling unit which is simple to assemble and is protected against direct contact is proposed, in which the connecting cable,is integrated in the housing,of the coupling capacitor,In the region where the conductor,passes through the grounded housing,of the coupling capacitor,the electrical field is reduced by means of the housing wall having a special shape,A smooth field distribution is achieved by suitable rounding of the formed region,which is provided for the insertion of the connecting cable

Coupling capacitor having an integrated connecting cable

A method and a system for rapid and interference-free data communication via power supply networks at any voltage levels. The combined effects of interference from signal distortion, frequency-selective signal attenuation or noise and from pulsed interference is reduced by using an MCM multicarrier modulation method. By combining the MCM method with a specially adapted interleaver (data scrambler) and error-protection coding, the error rates can be drastically reduced and the transmission rates can be increased to considerably more than 2 kbit/s.

Method and apparatus for information transmission via power supply lines

Growing community of inventors

Waldshut-Tiengen, Germany

Josef Lehmann