Otis Elevator Company

Axel S Pfeffer

Peter L Herkel

Dirk Heinrich Tegtmeier

Michael Mann

Juergen Gewinner

Gianfranco Giannini

An elevator control system includes a control power supply, a computing core in communication with the control power supply, a communication power supply in communication with the computing core, and a sleep monitor in communication with the control power supply, the computing core, and the communication power supply. The sleep monitor is disposed to selectively turn on/off the control power supply and the computing core, and the sleep monitor is disposed to selectively change an operating state of the communication power supply to a low voltage state.

Elevator control system with sleep monitor

A method of monitoring the functionability of a brake lining () comprising the following steps: measuring a value that characterizes the dielectric constant of the lining material; comparing the measured value with a reference value for the new material; and determining the functionability when the measured value is within a specified tolerance range.

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Berlin, Germany

Axel S Pfeffer