Wireless Joint Optical Communication and Power Transmission
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless transmission systems for robots face challenges in achieving a compact size while maintaining high reliability for bidirectional communication and power transmission, as they require separate optical communication spaces and transformer windings, which increase the joint portion size and are prone to light interference.
Innovation Solution
A wireless transmission system with a first and second substrate, each equipped with coils and light emitting/receiving elements arranged on their circumference, allowing for bidirectional optical communication within a single enclosed space, reducing size and minimizing external noise interference, and using magnetic field coupling for power transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate optical communication spaces are provided for upward and downward communication to avoid light interference, then communication reliability is improved, but the joint portion size is increased
Solution Approach 1:
The patent merges the upward and downward optical communication paths into a single shared optical communication space. By using bidirectional optical communication elements that can transmit and receive light in both directions along the same optical path, the system eliminates the need for separate communication spaces, thereby reducing joint portion size while maintaining communication reliability through the shared space configuration.
2Power
If transformer winding is arranged for wireless power transmission, then power transmission capability is achieved, but the joint portion size is increased
Solution Approach 1:
The patent implements multi-functionality by integrating wireless power transmission and bidirectional optical communication into a single joint structure. The transformer winding for power transmission and the optical communication elements share the same joint portion, allowing the structure to perform multiple functions (power transmission and communication) simultaneously without requiring separate dedicated spaces, thus avoiding size increase.
3Ease of operation
If coil-shaped lead wire or slip ring is used for communication between fixed body and rotating body, then wireless communication is achieved, but maintenance complexity increases
Solution Approach 1:
The patent replaces mechanical contact-based communication systems (coil-shaped lead wire or slip ring) with a wireless optical communication system. By using light transmission through the joint portion between the fixed body and rotating body, the system eliminates mechanical wear and contact issues, thereby improving ease of maintenance while reducing overall system complexity through the use of non-contact optical elements.
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 system achieves reliable bidirectional communication and power transmission in a compact form by integrating optical and magnetic components, reducing the size of the joint portion and enhancing signal-to-noise ratio, while preventing loopback latch phenomena through an interface circuit.
Implementation Method 1
electromagnetic induction using a transformer winding
Implementation Method 2
optical coupling using multiple light emitting elements and light receiving elements
Data Source
AI summary
A wireless transmission system includes a first substrate and a second substrate. A first coil used for wireless power transmission, a first light emitting element that is arranged inside the first coil and that is used for wireless communication, and a first light receiving element arranged on the same circumference as that of the first light emitting element are arranged on the first substrate. The first substrate and the second substrate are arranged so as to be opposed to each other so that a second light emitting element and a second light receiving element, which are arranged on the second substrate, are opposed to the first light emitting element and the first light receiving element.