Dual-Transceiver Collision Detection in Wearable VR
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Solution Overview
Problem
In multi-user virtual reality environments, users face risks of collisions due to lack of effective location detection and warning systems, which can lead to physical interactions, especially when users are mobile, as existing methods rely on complex image processing and additional sensors, increasing costs.
Innovation Solution
A wearable device with a head-mounted display and input device that uses dual transceivers to monitor the position of peer input devices via radio signals, generating collision alerts when the distance falls below a threshold, providing visual, audio, or haptic warnings to prevent collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If complex image processing and additional sensors are used for location detection, then collision detection accuracy is improved, but device complexity and cost increase
Solution Approach 1:
The patent replaces complex mechanical/optical sensing systems (image processing cameras, additional depth sensors) with a wireless signal-based detection system. The dual transceiver architecture uses radio signal transmission and reflection characteristics to infer spatial relationships and collision risks, substituting physical sensing mechanisms with electromagnetic field-based detection that achieves comparable accuracy with reduced complexity
Solution Approach 2:
The patent introduces wireless signals as an intermediary medium for detection. Instead of direct optical or mechanical sensing between users, the system uses transmitted and reflected radio signals as intermediaries to carry spatial information. This intermediary approach enables indirect measurement of user positions and movements, achieving collision detection without requiring direct line-of-sight or complex sensor arrays
2Measurement precision
If additional sensors and image processing are deployed, then location detection capability is improved, but manufacturing cost increases
Solution Approach 1:
The patent makes the transceiver system multi-functional by having it perform both communication (data transmission between HMD and input device) and detection (collision and location monitoring) functions. This universal use of existing communication hardware eliminates the need for separate detection sensors, thereby reducing component count and manufacturing cost while maintaining location detection capability
Solution Approach 2:
The system enables self-service detection where the communication infrastructure serves its own detection needs. The transceivers that naturally exist for data communication automatically provide detection functionality by monitoring signal characteristics during normal operation, eliminating the need for additional dedicated detection hardware and reducing overall system cost
3Reliability
If dual transceivers are used for monitoring peer input device position, then collision prevention is improved, but device complexity increases
Solution Approach 1:
The patent segments the detection function into two independent transceivers with distinct roles: one transceiver handles communication with the local HMD while the other monitors peer input devices. This segmentation allows each transceiver to be optimized for its specific function and enables parallel operation, improving reliability through functional separation while managing complexity through modular architecture
Solution Approach 2:
The patent merges the communication and detection functions into a unified dual-transceiver architecture where both functions share the same physical platform and processing resources. By combining these functions in a integrated manner rather than using separate systems, the patent achieves collision prevention capability while controlling overall device complexity through resource sharing and unified control
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
Effectively prevents collisions in multi-user environments by providing timely and intuitive alerts, enhancing user safety without the need for external image processing or additional sensors, thus reducing costs and improving user awareness.
Implementation Method 1
a second transceiver to monitor a position of a peer input device associated with another HMD device in the physical environment
Data Source
AI summary
In an example, a wearable apparatus may include a display device and an input device. The input device may include a network interface device having a first transceiver and a second transceiver. Further, the input device may include a processor connected to the network interface device to communicate with the display device via the first transceiver. Furthermore, the processor may monitor a position of a peer input device via the second transceiver based on a radio signal exchanged between the input device and the peer input device. In response to a determination that the position of the peer input device is less than a threshold distance, the processor may generate a collision alert on the display device via the first transceiver.