Dual-Axis Rotating Ring Antennas for Wireless Power and Data
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Solution Overview
Problem
Existing short-range wireless communication systems that use electromagnetic field coupling for both data communication and power transmission are limited in their movable range, particularly in the tilt direction, as they typically rotate only about a single axis, restricting the camera's movement and functionality.
Innovation Solution
A wireless communication system comprising a first antenna forming part of a ring shape, a second antenna forming part of a ring shape capable of electromagnetic field coupling, and rotation control units that allow both antennas to rotate about two orthogonal axes, enabling expanded movable range and bidirectional communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the antenna pair rotates only about a single axis (pan direction), then the data communication and power transmission can be maintained in that direction, but the movable range in other directions (e.g., tilt direction) cannot be expanded
Solution Approach 1:
The patent applies dimensionality change by transitioning from single-axis rotation to dual-axis rotation. The antenna pairs are configured to rotate not only in the pan direction (horizontal axis) but also in the tilt direction (vertical axis), thereby expanding the movable range from one dimension to two dimensions. This allows the surveillance camera to cover a broader surveillance area while maintaining electromagnetic field coupling for wireless communication and power transmission.
Solution Approach 2:
The patent implements dynamics by making the rotation axes adaptable and configurable. The system allows selective activation of rotation axes based on installation requirements - the first rotation axis (pan) and second rotation axis (tilt) can be independently controlled. This dynamic configuration enables the system to adjust its degree of freedom according to different application scenarios, resolving the contradiction between expanded movable range and device complexity.
2Length of moving object
If wireless communication and power transmission are implemented in a movable portion, then the movable range can be expanded compared to wired connection, but the system complexity increases due to electromagnetic field coupling requirements
Solution Approach 1:
The patent applies universality by designing the antenna pairs to perform multiple functions simultaneously. The same antenna structure is used for both wireless data communication and wireless power transmission, eliminating the need for separate wired connections. This multi-functional approach enables the movable portion to operate wirelessly while maintaining compact system structure, thereby expanding movable range without proportionally increasing system complexity.
Solution Approach 2:
The patent replaces mechanical wired connections with electromagnetic field coupling for both data and power transmission. By substituting physical cables with wireless electromagnetic communication, the system eliminates mechanical constraints that limit movable range. The antenna pairs maintain continuous electromagnetic coupling during rotation, enabling full-range movement without the complexity of sliding contacts or rotary connectors required in wired systems.
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
This configuration allows for wireless power transmission and data communication while enabling the system to rotate in both the pan and tilt directions, thereby expanding the movable range and maintaining electromagnetic field coupling between antennas.
Implementation Method 1
a first antenna configured to form at least part of a shape of a first ring, a second antenna configured to four at least part of a shape of a second ring, where the second antenna is capable of being coupled to the first antenna by an electromagnetic field
Data Source
AI summary
A wireless system includes a first antenna configured to form at least part of the shape of a first ring, a second antenna configured to form at least part of the shape of a second ring, where the second antenna is capable of being coupled to the first antenna by an electromagnetic field, a first rotation control unit configured to rotate at least one of the first antenna and the second antenna about a first axis that passes through the substantial center of the first ring, and a second rotation control unit configured to rotate at least one of the first antenna and the second antenna about a second axis that passes through the substantial center of the second ring and that is substantially orthogonal to the first axis.