Electromagnetic HMD Connector for Dynamic Mating
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Solution Overview
Problem
Virtual-reality head-mounted displays (HMDs) are restricted by cables that limit user movement and do not allow for quick and safe disconnection from computers without potential damage.
Innovation Solution
An electromagnetic connection system with a first connector featuring an electromagnet and a second connector with a magnetic element, allowing dynamic mating and un-mating by controlling the coupling force through a force transducer and controller, enabling secure and easy connection and disconnection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a cable is used to connect the HMD to the computer, then data communication is established, but user movement freedom is restricted
Solution Approach 1:
The connector uses an electromagnet to dynamically adjust the coupling force between connectors. The controller receives signals from a force transducer and adjusts the electromagnet current accordingly, allowing the connection to transition between strongly coupled (for data transfer) and loosely coupled (for movement freedom) states, resolving the contradiction between reliable connection and user mobility.
2Reliability
If a cable connection is established, then data transfer is enabled, but quick disconnection without damage is difficult
Solution Approach 1:
The patent replaces the traditional mechanical latch or snap-fit connector system with an electromagnetic coupling system. The electromagnet provides controlled magnetic attraction to hold connectors together during data transfer, and can be easily de-energized to allow safe, quick disconnection without mechanical damage, addressing both reliable connection and easy safe disconnection needs.
Solution Approach 2:
The force transducer continuously monitors the coupling force and provides feedback to the controller, which automatically adjusts the electromagnet current to maintain optimal connection strength. This self-regulating system ensures the connection remains secure during data transfer but can be easily released when needed, without requiring manual intervention or complex disconnection procedures.
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
Enables users to move freely without cable restrictions and allows for quick and safe disconnection of the HMD from the computer, enhancing the usability and safety of virtual-reality systems.
Implementation Method 1
a first connector (108) including an electromagnet (206)
Implementation Method 2
a force transducer (204) coupleable to the electromagnet (206) to measure a coupling force between the first and second connectors (108, 110)
Data Source
AI summary
An apparatus for electrically connecting electronic devices includes a first connector including an electromagnet. The apparatus also includes a second connector that includes a magnetic element and is detachably coupleable to the first connector. The electromagnet is energizeable to selectively couple and decouple the first and second connectors. The apparatus further includes a force transducer coupleable to the electromagnet to measure a coupling force between the first and second connector and transmit a signal based on the coupling force, and a controller coupleable to the force transducer to receive the signal from the force transducer. The controller is coupleable to a power source to control the electromagnet.