Hydro-quebec

Sylvain Riendeau

François Léonard

Louis Dupont

Pierre Gingras

François Bélanger

Patrick Picher

Michel Gauvin

Hugo Bertrand

Francois Belanger

François LÉONARD

A wireless telecommunication system for an equipment in an underground structure is disclosed. The system comprises a metal cover fitting in an opening of the underground structure while being supported by a shoulder. A porthole is formed in the cover. The porthole has a lens in plastic material letting radio waves pass. A cradle hangs across the opening. An antenna arrangement is mounted on the cradle and extends near and in alignment with the lens. A radio transceiver connects to the antenna arrangement and to the equipment in the underground structure to establish a wireless telecommunication with the equipment via the antenna arrangement and the lens.

Wireless telecommunication system for an equipment in an underground structure

According to the invention, a time synchronization of phase between measurement devices that do not share a same clock for their respective sampling of the signals is carried out by a time tagging of samples of the signals in time blocks followed by an adjustment of the phase values of components of interest of the signals in the regrouped time blocks so that the values refer to common time references between the measurement devices. The tagging is carried out with a synchronization signal available to the measurement devices, completed with count values provided by a counter operated by a reference clock for each measurement device.

Method and system for time synchronization of phase of signals from respective measurement devices

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Varennes, Canada

Sylvain Riendeau