Capacitive Touch Sensor Door Handle for Biometric Authentication
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Solution Overview
Problem
Conventional security systems rely on password input or fingerprint identification, which may not provide enhanced security performance and convenience, especially in scenarios where direct touch authentication is desired.
Innovation Solution
A security device with a cover layer incorporating a touch sensor that generates touch information based on capacitance changes, allowing for authentication through touch, including fingerprint or palm print recognition, and optionally featuring pressure sensors, display panels, and haptic modules, integrated with a door locking and driving unit for secure and user-friendly operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a password input method is used for security authentication, then the system provides basic security functionality, but the user experience is inconvenient and security performance is not enhanced
Solution Approach 1:
The patent replaces traditional mechanical/password-based authentication systems with a capacitive touch sensor system that detects finger touch through capacitance changes. This substitution enables fingerprint-based authentication, simultaneously improving security performance through biometric verification and maintaining ease of operation by allowing simple touch-based interaction without requiring manual password input.
Solution Approach 2:
The patent introduces a cover layer with integrated touch sensors as an intermediary between the user's finger and the door handle. This cover layer contains sensor pixels that detect capacitance changes when touched, enabling the system to capture fingerprint information and touch patterns while protecting the underlying door handle structure, thus enhancing both security and usability.
2Reliability
If a fingerprint identification system is used, then security performance is improved, but the device complexity increases
Solution Approach 1:
The patent implements a multi-functional cover layer that serves multiple purposes: it acts as a protective cover for the door handle, integrates capacitive touch sensors for fingerprint recognition, detects touch position and pressure, and provides a user interface for authentication. By combining these functions into a single integrated component, the system achieves high security performance without proportionally increasing device complexity.
Solution Approach 2:
The patent merges the door handle cover, touch sensor array, fingerprint detection capability, and authentication interface into a single integrated cover layer structure. This consolidation allows the system to provide sophisticated fingerprint identification and touch-based authentication while avoiding the complexity of separate components for each function.
3Adaptability or versatility
If traditional password or fingerprint systems are used, then basic authentication is provided, but the ability to differentiate between authorized users or pets is limited
Solution Approach 1:
The patent utilizes the unique local quality of each user's fingerprint pattern and touch characteristics captured by the sensor pixels in the cover layer. By analyzing the specific capacitance distribution and touch patterns at different locations, the system can differentiate between multiple authorized users and even pets, enhancing adaptability while maintaining authentication accuracy through detailed local feature analysis.
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
The solution enables improved security performance by allowing authentication through direct touch, providing secure door control and user convenience, with the ability to differentiate between authorized users or pets based on touch patterns, enhancing security and usability.
Implementation Method 1
a sensor electrode which forms a second capacitor with a hand of a user when a touch occurs thereon by the user, and the touch sensor generates touch information based on a change in capacitance of the second capacitor corresponding to the touch
Data Source
AI summary
A security device includes a door handle unit disposed on a door body, a cover layer including a touch sensor and covering the door handle unit, a door locking unit which controls a locking of the door body. The touch sensor may include a plurality of sensor pixels, each including a sensor electrode which forms a second capacitor with a hand of a user when a touch occurs thereon by the user. The touch sensor may generate touch information based on a change in capacitance of the second capacitor corresponding to the touch.