Motor Vehicle Anti-theft System with Disc Lock Detection
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Solution Overview
Problem
Existing anti-theft systems for motor vehicles, such as disc locks, can be tampered with, allowing unauthorized use of the vehicle since they do not provide a reliable method to ensure the disc lock is securely stored and engaged before the vehicle can be started.
Innovation Solution
An anti-theft system that includes a disc lock with a U-shaped metal body and a sliding pin, coupled with an electronic presence device to detect the disc lock's presence in a designated seat on the vehicle, which inhibits engine startup if the disc lock is not securely stored, and a bypass mechanism to allow starting the vehicle with a single key.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a disc lock is used to prevent wheel rotation, then basic anti-theft protection is provided, but the system can be tampered with allowing unauthorized vehicle use
Solution Approach 1:
The patent replaces the purely mechanical disc lock system with an electronic detection system. Sensors detect whether the disc lock is properly stored in its designated holder, and this detection signal is sent to the vehicle's control unit to enable or disable engine startup. This substitution of mechanical interlocking with electronic monitoring eliminates tampering vulnerabilities while maintaining security.
Solution Approach 2:
The system implements feedback by using sensors to continuously monitor the position and status of the disc lock in its holder. The sensor signals are fed back to the control unit, which automatically responds by enabling or disabling the engine startup function based on whether the disc lock is properly stored. This closed-loop feedback mechanism ensures reliable anti-theft protection without manual intervention.
2Reliability
If multiple keys are required for vehicle operation, then security is enhanced, but ease of operation is reduced
Solution Approach 1:
The patent merges the disc lock storage function with the vehicle's existing electronic key system. The disc lock holder is integrated into the vehicle structure with sensors that communicate with the control unit. When the disc lock is properly stored, the control unit automatically enables engine startup using the existing key, eliminating the need for separate keys while maintaining security through the integrated detection system.
3Reliability
If a disc lock holder with sensor detection is implemented, then tampering is prevented, but device complexity increases
Solution Approach 1:
The patent makes the disc lock holder multi-functional by integrating it with the vehicle's existing electronic systems. The holder not only stores the disc lock but also houses sensors that detect its presence and communicate with the control unit. This universal integration allows the same structure to perform storage, detection, and control functions, reducing overall system complexity while enhancing reliability.
Data Source
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AI summary
The anti-theft system for a motor vehicle (2) provided with a disc brake, comprising a disc lock (1) that is removably couplable with a disc (20) of a brake of said motor vehicle (2). The system comprises: a seat (3) for receiving said disc lock (1); a presence device (4) suitable for detecting whether the disc lock (1) is in the seat (3) and for producing a presence signal that is a function of the performed measurements; and a processing unit, connected to the presence device (4) and configured for inhibiting or permitting the startup of the motor vehicle (2) in function of the presence signal.