Apparatus for contactless data and energy transmission and method for operating such an apparatus

US5329274A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Gunter Donig · Poing, DE
• Bruno Scheckel · Ebersberg, DE
• Karl-Reinhard Schon · Munich, DE
• Robert Reiner · Neubiberg, DE

Key dates

• Filing date: Apr 20, 1992
• Grant date: Jul 12, 1994
• Expiry date: Apr 20, 2012

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04B5/45
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

An apparatus for contactless data and energy transmission and includes a stationary part having device for transmitting and receiving data and device for generating energy. A movable part has a plurality of rectifier devices each with at least one output and modulators each being connected downstream of a respective one of the rectifier devices. A first pair of coils is connected to the device for transmitting and receiving data and to the rectifier device for transmitting data from the stationary part to the movable part. A second pair of coils is connected to the device for generating energy and to the rectifier device for transmitting energy from the stationary part to the movable part. The coils in the stationary part are arbitrarily associated with the coils in the movable part, and data is transmitted from the movable part to the stationary part by a load variation at the coil of the movable part not being used for energy transmission. Controllable semiconductor elements each having a load path are connected between the at least one output of a respective one of the rectifier devices and a charge capacitor at which an unregulated operating voltage can be picked up, for delive…