Wearable Device Wearing Detection via Capacitive Sensor
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Solution Overview
Problem
Existing wearable device wearing detection solutions face issues of structural complexity, difficulty in mass production, and high cost due to complex structures and high process requirements, particularly in optical and capacitance detection methods.
Innovation Solution
A wearable device with a capacitive sensor and a metal structural component inside the device housing, where the metal structural component is adhered to the capacitive sensor to increase the electrostatic induction region, allowing for real-time capacitance value and inherent capacitance value determination to detect the worn state without altering the device's structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If optical solution is used for wearing detection, then detection function is achieved, but structural complexity increases and manufacturing cost increases
Solution Approach 1:
The patent replaces the optical detection system with a capacitive sensing system. Instead of using optical sensors that require light paths and complex signal processing, the invention uses a capacitive sensor that detects changes in capacitance caused by the proximity of the human body, thereby simplifying the detection mechanism while maintaining functionality.
Solution Approach 2:
The patent extracts the essential detection function from the complex optical system and implements it through a simpler capacitive sensing mechanism. By taking out only the necessary sensing capability and implementing it through a different physical principle, the structural complexity is reduced while the wearing detection function is preserved.
2Reliability
If optical solution is used for wearing detection, then detection function is achieved, but manufacturing cost increases
Solution Approach 1:
The patent replaces the expensive optical detection system with a more cost-effective capacitive sensing system. The capacitive sensor requires fewer components, simpler circuitry, and less precise manufacturing tolerances, thereby reducing manufacturing costs while achieving the same wearing detection function.
Solution Approach 2:
The patent employs a capacitive sensor that can be implemented with inexpensive components and simple circuitry. This approach uses cheaper materials and manufacturing processes compared to optical systems, making the product more cost-effective for mass production while maintaining the essential detection capability.
3Reliability
If capacitance detection solution is used, then detection function is achieved, but structural complexity increases
Solution Approach 1:
The patent integrates the capacitive sensor with existing structural components of the wearable device, such as the housing or frame. By making these existing components serve dual purposes (both structural and sensing functions), the need for separate dedicated sensor structures is eliminated, thereby reducing structural complexity while maintaining the detection function.
Solution Approach 2:
The patent combines the capacitive sensing function with the existing structural elements of the device. Instead of adding a separate complex sensor structure, the invention merges the sensing capability into the housing or frame, thereby reducing the overall structural complexity while achieving the wearing detection function.
4Measurement precision
If sensor is placed in sensitive region, then detection sensitivity is improved, but structural complexity increases
Solution Approach 1:
The patent makes the housing or frame serve dual purposes: as a structural component and as a capacitive sensing element. By positioning the capacitive sensor to utilize the existing housing structure as part of the sensing mechanism, the sensor can be placed in the sensitive region without requiring additional complex structural modifications.
Solution Approach 2:
The patent enables the housing or frame to serve itself by acting as both a structural support and a capacitive sensing element. The existing structural components automatically contribute to the detection function, eliminating the need for separate dedicated sensor structures and reducing overall structural complexity while maintaining detection sensitivity.
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
This solution improves wearing detection performance, simplifies installation, reduces production costs, and enhances the anti-sweat effect and accuracy of detection, while maintaining the device's original structure and sound quality.
Implementation Method 1
the metal structural component is configured to increase an electrostatic induction region of the capacitive sensor
Data Source
AI summary
Embodiments of the present application provide a wearable device, a wearing detection method and a storage medium. The wearable device includes: a device housing; a capacitive sensor, a processing module and a metal structural component which are provided inside the device housing, where the metal structural component is adhered to the capacitive sensor. The metal structural component is configured to increase an electrostatic induction region of the capacitive sensor; the processing module is configured to: obtain a real-time capacitance value and an inherent capacitance value of the capacitive sensor to ground, determine a real-time difference between the real-time capacitance value and the inherent capacitance value, and determine the wearable device to be in a worn state when the real-time difference is greater than a preset threshold.