Magnetic Privacy Shutter for Removable Light Sensor Modules
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Solution Overview
Problem
Wearable audio devices with integrated sensors raise privacy concerns due to uncontrolled data collection by light sensors, necessitating a solution that allows users to selectively manage sensor data acquisition.
Innovation Solution
A removably attachable sensor module with a user-actuatable shutter mechanism using bistable magnets to block or unblock the light sensor's field of view, coupled with a switch to disconnect power when in the privacy position, ensuring user control over data collection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the light sensor is integrated into the wearable audio device, then the device can process and communicate environmental information, but user privacy is compromised due to uncontrolled data collection
Solution Approach 1:
The patent implements a movable shutter mechanism that can dynamically transition between open and closed positions to control the light sensor's exposure to the environment. This dynamic control allows the system to adapt between data collection mode (shutter open) and privacy protection mode (shutter closed), resolving the contradiction between environmental information processing and privacy protection.
Solution Approach 2:
The shutter mechanism is equipped with a bistable magnet that automatically returns the shutter to its default closed position after being opened for data collection. This self-service feature ensures that the system automatically protects user privacy by closing the shutter without requiring continuous user intervention, while still allowing controlled access for environmental sensing when needed.
2Ease of operation
If the shutter is made movable to control privacy, then user control over data collection is improved, but device complexity increases
Solution Approach 1:
The patent replaces complex electronic control systems with a simple magnetic actuation mechanism. The bistable magnet provides automatic positioning without requiring motors, sensors, or complex control circuits, significantly reducing device complexity while maintaining ease of operation through simple user interaction to trigger the shutter opening.
Solution Approach 2:
The shutter mechanism utilizes magnetic field parameter changes to control its position. The bistable magnet creates two stable magnetic states that correspond to the closed and open positions, allowing the shutter to be controlled through simple magnetic actuation rather than complex mechanical or electronic systems, thus reducing overall device complexity.
3Object-affected harmful factors
If the shutter blocks the light sensor field of view, then privacy protection is enhanced, but light sensor functionality is disabled
Solution Approach 1:
The shutter mechanism provides dynamic control over the light sensor's field of view, transitioning between blocked (privacy protected) and unblocked (functional) states. This dynamic capability allows the system to adapt between privacy protection mode and functional operation mode, ensuring the light sensor is available when needed while protecting privacy when required.
Solution Approach 2:
The bistable magnet automatically returns the shutter to its default closed position after being opened for data collection, providing self-service privacy protection. The system automatically restores privacy by closing the shutter without requiring continuous user intervention, while still ensuring the light sensor is functional when data collection is needed.
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 users with high privacy assurance by physically blocking and electrically disconnecting the sensor, thereby preventing data capture and reducing power consumption, while allowing flexible sensor configurations.
Implementation Method 1
The moveable shutter comprises a bistable magnet that repels the fixed magnet to urge the shutter into either a privacy position that blocks a field of view of the light sensor or an open position that does not block the field of view of the light sensor
Implementation Method 2
bistable magnet that repels the fixed magnet
Data Source
AI summary
Examples that relate to sensor modules removably attachable to wearable audio devices are disclosed. In one example, a removable sensor module comprises a light sensor, a fixed magnet, and a moveable shutter. The moveable shutter comprises a bistable magnet that repels the fixed magnet to urge the shutter into either a privacy position that blocks a field of view of the light sensor or an open position that does not block the field of view of the light sensor.