CT Rotary Assembly Using Antenna Coupling Instead of Slip Rings
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Solution Overview
Problem
Existing computed tomography devices face issues with carbon powder generation and noise from carbon brushes, unreliable power and signal transmission due to slip ring faults, and manufacturing challenges with large-sized slip rings.
Innovation Solution
A rotary assembly with electromagnetically coupled transmitting and receiving antennas on a stator and rotor disk, along with a metal skeleton in the slip ring, ensures silent and stable power and data transmission, and maintains signal integrity during rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If carbon brushes and copper slideways are used for power and data transmission, then contact-based transmission is achieved, but carbon powder is generated and noise is produced
Solution Approach 1:
The patent replaces the mechanical contact-based transmission system (carbon brushes and copper slideways) with an electromagnetic coupling system using transmitting and receiving antennas. This substitution eliminates the mechanical friction that generates carbon powder and noise, while maintaining reliable power and data transmission through electromagnetic fields.
Solution Approach 2:
The patent introduces electromagnetic fields as an intermediary between the rotating and stationary components. The transmitting antenna on the rotating component and the receiving antenna on the stationary component (or vice versa) couple through the electromagnetic field, enabling contactless transmission of power and data without direct mechanical contact.
2Device complexity
If a single line is used for power and signal transmission via slip ring, then simple structure is achieved, but transmission reliability decreases when fault occurs
Solution Approach 1:
The patent segments the transmission system into multiple independent antenna elements (transmitting and receiving antennas) that can operate in parallel. This segmentation allows the system to continue functioning even if one antenna or transmission path fails, as other antennas can maintain the connection, thereby improving overall reliability without significantly increasing structural complexity.
3Adaptability or versatility
If large-sized slip ring is used to carry multiple data channels, then data transmission capability is improved, but manufacturing difficulty increases
Solution Approach 1:
The patent replaces the complex mechanical slip ring structure with multiple antennas that can be independently positioned and configured. This substitution allows for greater flexibility in designing multi-channel data transmission systems, as antennas can be arranged in various configurations without the manufacturing constraints of large slip rings, thereby improving adaptability while reducing manufacturing difficulty.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution reduces carbon powder pollution, noise, and enhances transmission reliability by using non-contact antenna coupling and a rigid slip ring design, ensuring stable data and power transmission even with coil faults.
Implementation Method 1
at least one transmitting antenna disposed on a mating surface of one of the stator disk or the rotor disk, and at least one receiving antenna disposed on the mating surface of the other of the stator disk or the rotor disk. The transmitting antenna and the receiving antenna are electromagnetically coupled to maintain signal integrity during relative rotation.
Data Source
AI summary
Embodiments of the present disclosure provide a rotary assembly. The rotary assembly comprises a stator disk, a rotor disk rotationally cooperated with the stator disk, at least one transmitting antenna disposed on a mating surface of one of the stator disk or the rotor disk, and at least one receiving antenna disposed on the mating surface of the other of the stator disk or the rotor disk. The transmitting antenna and the receiving antenna are electromagnetically coupled to maintain signal integrity during relative rotation.