Siemens Aktiengesellschaft

Helmut Ehringer

Norbert Muller

Jurgen Schweiger

A monitoring system for monitoring window panes of an interior of a space or chamber having a plurality of window panes and lateral and/or upper and/or lower walls surrounding the window panes, such as an interior of a motor vehicle to be monitored for intruders, includes at least one microphone configuration for detecting vibrations typically produced when a pane is broken. The microphone configuration is fastened in the interior and/or to at least one of the walls of the space in each case without mechanical contact with the window panes to be monitored, in such a way that the respective microphone configuration can receive essentially only the vibrations transmitted by the air in the interior. The number of the microphone configurations used to detect acoustic vibrations typically produced when a pane is broken and transmitted by the air in the interior is less than the number of window panes and/or door panes and/or roof panes to be monitored for pane breakage.

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Deuerling, Germany

Helmut Ehringer