ROTATING UNIT WITH A DEVICE FOR WIRELESS DATA TRANSMISSION BETWEEN TWO PARTS MOVABLE RELATIVE TO ONE ANOTHER, AND METHOD FOR WIRELESS DATA TRANSMISSION BETWEEN TWO PARTS MOVABLE RELATIVE TO ONE ANOTHER

摘要

In a method and a device for wireless data transmission between two parts of a medical imaging device that are moving relative to one another, at least: a first communication device has at least one transmission unit to transmit at least one radio-frequency signal, a second communication device has at least one reception unit to receive at last one radio-frequency signal, and the first and second communication devices are arranged at the different parts of the rotating unit. A directional coupler has at least two radio-frequency conductors; with one of the radio-frequency conductors being connected at one end thereof with the first communication device, and the other end thereof is terminated with a real resistor. The second radio-frequency conductor is connected with the second communication device. One of the radio-frequency conductors extends annularly at least around the entire circumference of one of the two parts of the rotating unit that are movable relative to one another, while the other radio-frequency conductor is arranged on at least a portion of the circumference of the other part of the rotating unit; such that a constant power is extracted from the radio-frequency conductor connected with the communication device having at least one transmission unit.

主权项

1. A rotating assembly comprising:
two parts, each having a circumference, that are rotatable relative to each other with respect to the respective circumferences thereof; a wireless transmission device configured to transmit at least one type of data, selected from the group consisting of measurement data and operating data, between said two parts; said wireless transmission device comprising a first communication device comprising at least one transmission unit, situated on a first of said two parts, that transmits at least one radio frequency signal comprising said at least one type of data; said wireless transmission device comprising a second communication device comprising at least one reception unit, situated on a second of said two parts, that receives said at least one radio frequency signal; and a directional coupler comprising at least two radio frequency conductors, a first of said at least two radio frequency conductors being connected at one end thereof with said first communication device and having an opposite end terminated with a real resistance, and a second of said at least two radio frequency conductors being connected with said second communication device, said first and second of said at least two radio frequency conductors being configured in a conductor configuration that causes a constant power to be extracted from said first of said radio frequency conductors connected to said first communication device, said conductor configuration comprising said first of said at least two radio frequency conductors extending annularly around an entirety of the circumference of said first of said two parts, and said second of said at least two radio frequency conductors extending around at least a portion of the circumference of said second of said two parts.