HMD Protective System Using Sensor-Based Risk Assessment
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Solution Overview
Problem
Current head-mounted display (HMD) devices lack effective protective systems to prevent injuries to the wearer's sensitive body parts, such as the eyes, from components of the device itself, particularly in accidental scenarios.
Innovation Solution
A protective system for HMD devices that uses sensors to identify situational states and determine risk levels, deploying mechanisms like retract mechanisms, customized airbags, tubular structures, or detachment mechanisms to mitigate potential injuries based on identified risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If protective mechanisms are added to HMD device, then safety of wearer is improved, but device complexity increases
Solution Approach 1:
The protective system is divided into multiple independent protective mechanisms (retract mechanism, detachment mechanism, airbag mechanism) that can operate independently or in combination. Each mechanism targets specific components (display unit, processor unit, battery unit) and can be activated based on the type and severity of detected risk, allowing the system to provide comprehensive protection without requiring all mechanisms to be simultaneously active
Solution Approach 2:
The system performs preliminary risk assessment by continuously monitoring environmental data and user behavior patterns before actual harm occurs. The processor identifies potential risks (falling objects, collisions, improper usage) and activates appropriate protective mechanisms in advance, such as retracting the display unit before impact or detaching it during collision events, thereby preventing injury before it happens
2Reliability
If multiple protective mechanisms are provided, then protection coverage is improved, but ease of operation deteriorates
Solution Approach 1:
The protective system operates autonomously by automatically detecting risks through sensors, processing data to identify threat levels, and activating appropriate protective mechanisms without user intervention. The system monitors environmental conditions, user behavior, and device state continuously, making independent decisions about when and how to deploy protection, thereby maintaining ease of operation while providing comprehensive protection coverage
Solution Approach 2:
The system continuously monitors environmental data, user feedback, and sensor inputs to dynamically adjust protective mechanism activation. The processor receives real-time data from sensors, evaluates risk levels, and modifies protective actions accordingly, creating a closed-loop system that adapts to changing conditions while maintaining simple operation for the user
Data Source
AI summary
A head mounted display (HMD) device that includes a plurality of sensors, an actuator, a plurality of protective mechanisms, and a processor configured to identify a situational state of a user of the HMD device within a proximity of the user, based on sensor input received from the plurality of sensors. A risk-level of a potential injury to the user from a component of the HMD device is determined based on the identified situational state and the sensor input. A protective mechanism is selected from the plurality of protective mechanisms based on the identified situational state and the determined risk-level. The actuator is controlled to deploy the selected protective mechanism to mitigate injury to the user from the component of the HMD device, based on the identified situational state and the determined risk-level.