Wearable Display Device Sensor-Based Hazard Detection
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Solution Overview
Problem
Wearable head-mounted display (HMD) devices pose safety risks in outdoor environments due to their impact on the user's field of vision, potentially obstructing the view of dangerous objects such as cars, which can lead to safety hazards.
Innovation Solution
A wearable display device equipped with a sensor unit to detect surrounding conditions, a determiner part to assess danger, and an alarm information output part to alert the user, along with a function limiter that reduces image display or deactivates functions when danger is detected, ensuring the user's safety by minimizing visual obstruction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the HMD display is activated to provide visual information, then the user gains access to important data and images, but the user's field of vision is reduced and safety is compromised
Solution Approach 1:
The system performs preliminary detection of dangerous objects and conditions before the user encounters them through the display. The sensor unit continuously monitors the environment ahead of time, and the control unit prepares safety responses in advance, allowing the display to provide information without compromising safety by having safety mechanisms already in place before danger occurs
Solution Approach 2:
The system implements a feedback loop where sensor data about the user's environment and display usage is continuously monitored, and the control unit adjusts display activation and safety warnings in real-time based on this feedback. When dangerous objects are detected or unsafe conditions arise, the system provides feedback by limiting display functions or issuing warnings, thus maintaining both information access and safety
2Illumination intensity
If the display size is increased to improve visibility, then the user can see images more clearly, but the field of vision obstruction increases and safety risks rise
Solution Approach 1:
The display characteristics are made dynamic rather than static. The control unit adjusts display size, brightness, and activation state in real-time based on environmental conditions detected by the sensor unit. When dangerous objects are detected or unsafe conditions arise, the display automatically reduces its size or turns off, making the system adaptable to safety requirements while maintaining optimal visibility when safe
3Reliability
If continuous safety monitoring is implemented to detect dangerous objects, then user safety is improved, but energy consumption increases
Solution Approach 1:
Instead of continuous monitoring, the system uses periodic action by activating the sensor unit and safety monitoring functions only when needed. The control unit determines based on environmental conditions whether to activate the sensor unit and dangerous object detector, allowing the system to conserve energy during safe periods while maintaining safety detection capability when risks are present
Solution Approach 2:
The system changes operational parameters dynamically based on environmental conditions. The sensor unit and detection functions are activated or deactivated based on parameters such as outdoor/indoor environment detection, user movement state, and detected danger levels. This allows the system to maintain safety capability when needed while reducing energy consumption during safe periods by operating in a low-power state
Data Source
AI summary
A wearable display device equipped with a detection function is disclosed. The disclosed device includes an image viewer unit configured to show an image; a sensor unit configured to acquire a user's surrounding condition information; a determiner part configured to determine whether or not the user faces a dangerous condition based on information from the sensor unit; and an alarm information output part configured to output alarm information based on a determination result of the determiner part. The disclosed wearable display device makes it possible to increase the user's safety by effectively detecting dangerous objects, such as automobiles, and by suitably controlling the images on the device which may reduce the user's field of vision.