Car Module Housing Tamper Detection Using Electrical Fingerprints
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Solution Overview
Problem
Car modules are prone to unauthorized manipulation, posing safety risks for vehicles with advanced driver assistance and autonomous driving functions, as existing security measures are inadequate for ensuring reliability and integrity of electronic control units.
Innovation Solution
A tamper-detecting electronic control unit with a housing system that includes electrodes and electrically relevant material, creating a unique fingerprint that changes upon manipulation, allowing detection and secure state activation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If the housing is made accessible by removable parts for maintenance and upgrades, then ease of repair and adaptability are improved, but security against unauthorized manipulation deteriorates
Solution Approach 1:
The patent applies preliminary action by pre-distributing electrically relevant material between the electrodes in a specific pattern during manufacturing, creating a unique fingerprint before the housing is assembled. This initial configuration is stored as a reference value, enabling future comparison to detect any subsequent manipulations that occur during maintenance or upgrades.
Solution Approach 2:
The patent implements feedback by continuously monitoring the electrical parameter between electrodes and comparing it against the stored reference value. When the housing is opened for repair or modification, the redistribution of electrically relevant material changes the electrical parameter, triggering a detection mechanism that alerts to the manipulation and prevents unauthorized changes.
2Adaptability or versatility
If advanced driver assistance and autonomous driving functions are implemented, then vehicle functionality and safety are improved, but vulnerability to manipulation and safety risks deteriorate
Solution Approach 1:
The patent employs a cost-effective tamper detection system using simple electrodes and electrically relevant material distributed between them. This inexpensive mechanism provides continuous security monitoring for expensive autonomous driving systems, detecting manipulations that could compromise safety while maintaining economic feasibility for widespread implementation.
Solution Approach 2:
The patent introduces an intermediary tamper detection system between the electronic control unit and external manipulation attempts. The electrodes and electrically relevant material act as a mediator that detects physical interference or unauthorized access before it can reach the critical autonomous driving functions, providing a protective layer without interfering with normal operation.
3Reliability
If a tamper detection system is implemented, then security and reliability are improved, but device complexity increases
Solution Approach 1:
The patent applies self-service by allowing the electrically relevant material to automatically distribute itself between the electrodes during housing assembly, creating the unique fingerprint without requiring complex programming or calibration. The system self-configures when the housing is closed, eliminating the need for manual setup and reducing overall system complexity.
Solution Approach 2:
The patent replaces complex mechanical tamper detection mechanisms with an electrical measurement system. Instead of using mechanical switches, sensors, or complex locking mechanisms, the invention uses simple electrical parameter measurement between electrodes to detect housing manipulation, significantly reducing device complexity while maintaining high reliability.
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
Enables reliable detection of tampering attempts, ensuring safe operation by limiting functionality or alerting systems, thus enhancing security and safety in vehicles.
Implementation Method 1
measuring and storing a car module unique value of an electric parameter, in particular electrical resistance, impedance and/or capacity, measured between the first and the second electrode
Implementation Method 2
measuring and storing a car module unique value of an electric parameter, in particular electrical resistance, impedance and/or capacity, measured between the first and the second electrode
Data Source
Figure 1a~1b
Figure 2a~2d
Figure 3a~3c
AI summary
The invention relates to a car module (10) comprising a tamper detecting electronic control unit (1), wherein the electronic control unit (1) is configured to control at least one electrically controllable function of a vehicle, for instance a light function such as low beam or high beam of a vehicle headlight, said electronic control unit (1) comprising - at least one carrier (2), in particular a printed circuit board, comprising an electric circuit (2a) for performing the controlling by the electronic control unit (1), - a housing (3) enclosing the at least one carrier (2), wherein the housing (3) comprises at least two parts (3a, 3b), wherein a first part (3a) of the housing (3) is holding the carrier (2), and wherein a second part (3b) of the housing (3) is attached to the first part (3a) in order to close the housing (3) and as such enclose the carrier (2) within the housing (3), and - a system (4) for detecting opening of the housing (3).