Eyewear Strain Gauge Detection for Consistent Power Management
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Solution Overview
Problem
Existing eyewear devices, such as smart glasses, lack efficient mechanisms to detect when they are being put on or taken off by a user, leading to inconsistent power management and user experience.
Innovation Solution
Incorporation of a strain gauge sensor to detect signature events like putting on or taking off the eyewear, with a processor controlling device functions based on these events, such as powering on or off the display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If no wear detection mechanism is used, then the device structure remains simple, but power management becomes inconsistent and user experience deteriorates
Solution Approach 1:
The patent replaces complex mechanical detection systems with strain gauge sensors that convert mechanical deformation into electrical signals. This allows for reliable detection of wear events through electrical measurements rather than complex mechanical switches or sensors, resolving the contradiction between reliability and device complexity.
Solution Approach 2:
The strain gauge sensor is integrated into the frame structure itself, allowing the frame to detect its own deformation when put on or taken off. This self-service approach eliminates the need for separate detection mechanisms, improving power management consistency while maintaining simple device structure.
2Ease of operation
If the device is always powered on, then user experience is improved with immediate responsiveness, but power consumption increases
Solution Approach 1:
The strain gauge sensor detects wear events in advance, allowing the processor to power on the device just before the user needs it. This preliminary detection enables the system to transition from a always-on state to an on-demand state, reducing power consumption while maintaining responsiveness when needed.
Solution Approach 2:
The system uses periodic sampling of strain gauge data to detect wear events, rather than continuous monitoring. This periodic action allows the device to remain in low-power mode between sampling intervals, reducing overall power consumption while still providing timely detection of wear events for immediate responsiveness.
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 seamless power management by automatically turning the device on when put on and off when removed, enhancing user experience and reducing power consumption.
Implementation Method 1
a strain gauge sensor to detect signature events like putting on or taking off the eyewear
Data Source
AI summary
An eyewear device including a strain gauge sensor to determine when the eyewear device is manipulated by a user, such as being put on, taken off, and interacted with. A processor identifies a signature event based on sensor signals received from the strain gauge sensor and a data table of strain gauge sensor measurements corresponding to signature events. The processor controls the eyewear device as a function of the identified signature event, such as powering on a display of the eyewear device as the eyewear device is being put on a user's head, and then turning off the display when the eyewear device is removed from the user's head.