Method for reducing power loss in devices for contactless data and energy transfer, and apparatus for performing the method
AssigneeSiemens Aktiengesellschaft
InventorsGunter Donig, Bruno Scheckel, Karl-Reinhard Schon
Life of this patent
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Abstract
In a method and apparatus for reducing power loss in devices for contactless data and energy transfer, a function unit is provided in a movable part which ascertains the value of the current loss of a voltage regulator. This value is then either stored in memory or compared with a command value. A stationary part can read out this value or receive a signal if the command value is exceeded, which indicates to it that the energy supply must be reduced.
Claims12
A method for reducing power loss in devices for contactless data and energy transfer, including a stationary part having at least one coil for data and energy transfer, and a movable part having at least one coil for data and energy transfer and having a voltage regulator, which comprises:
- transferring a defined energy from the stationary part to the movable part;
- ascertaining a leakage current in the voltage regulator;
- transferring a signal which is equivalent to an ascertained value of the leakage current from the movable part to the stationary part;
- regulating the energy transfer from the stationary part to the movable part as a function of the ascertained value.
An apparatus for reducing power loss in devices for contactless data and energy transfer, comprising:
- a first and second control unit;
- a stationary part having means for performing contactless data transfer, means for performing contactless energy transfer, the first control unit connected to said means for contactless data transfer and to said means for contactless energy transfer;
- and
- a movable part having means for receiving transferred energy and means for receiving and transferring data, a voltage regulator which generates a leakage current in said movable part, an analog/digital converter connected to said voltage regulator for digitizing the value of the leakage current, a memory, and wherein the second control unit is connected between said analog/digital converter and said memory for storing the value of the leakage current in said memory;
- and wherein
- said first control unit controls said means for performing contactless energy transfer, thereby regulating energy supply to said movable part.
An apparatus for reducing power loss in devices for contactless data and energy transfer, comprising:
- a first and second control unit;
- a stationary part having means for contactless data transfer, means for performing contactless energy transfer, and wherein said first control unit is connected to said means for performing contactless data transfer and to said means for performing contactless energy transfer;
- and
- a movable part having means for receiving transferred energy and means for receiving and transferring data, a voltage regulator which generates a leakage current, an analog/digital converter connected to said voltage regulator for digitizing the value of the leakage current, a comparator connected to said analog/digital converter for comparing the value of the leakage current with a reference value, and wherein said second control unit is connected to said comparator for generating a signal to be transferred to said stationary part if the reference value is exceeded by the leakage current;
- and
- wherein said first control unit controls said means for contactless energy transfer for regulating energy supply to said movable part in response to said signal.
An apparatus for reducing power loss in devices for contactless data and energy transfer, comprising:
- a stationary part having means for performing contactless data transfer, means for performing contactless energy transfer, and a first control unit connected to said means for performing contactless data transfer and to said means for performing contactless energy transfer;
- and
- a movable part having means for receiving transferred energy and means for receiving and transferring data, a voltage regulator which generates a leakage current in said movable part, a comparator connected to said voltage regulator for comparing an analog value of the leakage current with a defined reference value, and a second control unit connected to said comparator for generating a signal to be transferred to said stationary part if the reference value is exceeded;
- and wherein
- said first control unit is operative for controlling said means for performing contactless energy transfer, thereby regulating energy supply to said movable part in response to said signal.
Dependencies are inferred from the claim text.