Mechatronic Lock System Using Rotational Motion Pattern
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Solution Overview
Problem
Existing wireless mechatronic lock systems face issues with security due to feedback provided by user interfaces, increased complexity and cost from electronic components, and difficulty in creating single-controlled variants with robustness against tampering.
Innovation Solution
A lock system using a programmable motion pattern of rotational movements detected by sensors, where the control module matches the input pattern with a reference pattern to activate the lock, with all electronic components located in the inner knob, reducing the need for external sensors and maintaining mechanical simplicity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If electronic components (sensors, buttons) are added in the outer knob to detect angular position and confirming actions, then the lock system can detect user input, but the cost and complexity increase significantly and robustness against weather, vandalism, and tampering decreases
Solution Approach 1:
The lock system is divided into two functional zones: the outer knob remains purely mechanical with no electronics, while the inner knob housing contains all electronic components (sensor, controller, battery). This segmentation protects electronics from environmental damage and tampering while preserving user interaction capability through the mechanical outer knob.
Solution Approach 2:
A magnetic field intermediary is introduced between the mechanical outer knob and the electronic sensor in the inner knob. The magnet attached to the outer knob interacts with the magnetic field sensor without physical contact, allowing the outer knob to transmit rotational information to electronics without containing any electronic components itself.
2Ease of operation
If a user push button action is relayed mechanically through the lock system to the inner knob assembly, then the outer knob remains simple, but the cost and complexity still increase significantly and mechanical security level decreases
Solution Approach 1:
The mechanical button-pressing action is replaced by a magnetic field-based sensing system. Instead of mechanically relaying push actions through the lock mechanism, the system uses a magnet on the outer knob interacting with a magnetic field sensor in the inner knob housing, eliminating complex mechanical relay mechanisms while maintaining simplicity and security.
3Ease of operation
If feedback is provided through the user interface about code entry status, then the user knows how to input the code, but security details about the code are disclosed which lowers the security level
Solution Approach 1:
The system provides partial feedback - it confirms whether the correct motion pattern has been entered without providing any information about what the correct pattern should be. The LED indicator shows only binary success/failure states, deliberately withholding security-critical information while still guiding user operation.
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 enhances security by minimizing user feedback, reduces complexity and cost, and increases robustness against tampering, while being applicable to both single and double-controlled variants and late-stage configurations.
Implementation Method 1
a sensor, arranged for determining a rotational movement of the outer knob
Data Source
AI summary
The present invention relates generally to mechatronic locks and more specifically, wireless mechatronic smart lock systems for locking doors which can be activated through a rotational movement of the outer knob. In an aspect, the present disclosure describes a specific user interaction method and technical solution for activating the lock system. The user applies a predetermined or programmable motion pattern of rotational movements or motion pattern of the outer knob. The input movements or motions are detected by a sensor and matched with reference motion pattern descriptions by the intelligent controller in the lock system. Upon a positive match the lock system will be activated.