Wearing Detection Module for Smart Spectacles
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing head-mounted devices with electronic spectacle frames face issues with unreliable wearing detection, leading to false positives when the device is not actually worn, such as when held in the hand.
Innovation Solution
A wearing detection module with a pair of sensors (infrared, capacitive, temperature, or resistive) on opposite surfaces of a spectacle frame element, coupled with a processing unit to determine if the device is worn by analyzing distance or physiological parameters, eliminating false positives.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single sensor is used to detect wearing status, then the device complexity is reduced, but the reliability of wearing detection deteriorates due to false positives
Solution Approach 1:
The wearing detection system is segmented into multiple independent sensors positioned at different locations on the spectacle frame. Each sensor provides independent detection data, and the processing unit combines these segments to make a reliable wearing status determination, eliminating false positives that would occur with a single sensor.
Solution Approach 2:
The processing unit is nested within the electronic spectacle frame system, receiving data from multiple sensors and performing integrated analysis. This nested structure allows the processing unit to combine information from distributed sensors and apply logical rules to determine accurate wearing status.
2Measurement precision
If multiple sensors are deployed on opposite surfaces, then the measurement precision of wearing status is improved, but the device complexity increases
Solution Approach 1:
The detection system transitions from single-point detection to multi-dimensional detection by placing sensors on opposite surfaces of the spectacle frame. This spatial dimensionality allows the system to detect whether the frame is being held in hand versus worn on the head, as the relative positions and orientations of sensors provide distinctive detection patterns for each scenario.
Solution Approach 2:
The processing unit is pre-configured with detection rules and logic that enable it to immediately analyze sensor data and determine wearing status without requiring complex real-time computation. The system performs preliminary analysis of sensor patterns to quickly distinguish between wearing and non-wearing states.
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
Provides accurate detection of whether the head-mounted device is worn, optimizing energy consumption and data analysis, and preventing false positives.
Implementation Method 1
at least one sensor is an infrared proximity sensor configured to emit light and to detect light reflected back
Implementation Method 2
at least one sensor is a capacitive sensor configured to measure the contact area or the distance between the spectacle frame element and the wearer
Implementation Method 3
at least one sensor is a temperature sensors configured to measure the temperature related to the distance between the spectacle frame element and the wearer
Implementation Method 4
at least one sensor is a resistive sensors configured to measure biological and/or physiological parameters of the wearer
Data Source
AI summary
A wearing detection module configured to be fixed on a spectacle frame element of a smart spectacle frame, the spectacle frame element including a first surface configured to face the wearer when using the smart spectacle frame and a second surface opposed to the first surface, and the wearing detection module including a pair of sensors configured to measure one parameter indicative of the distance between the spectacle frame element and the wearer, one sensor is arranged on the first surface and the other one is arranged on the second surface, and a processing unit configured to receive data indicative of the parameter sensed by each sensors and to determine a wearing data indicative of the use by the wearer of the smart spectacle frame based on the received data.