SmartFuse Driver Authorization Circuit for Secure Vehicle Starting
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Solution Overview
Problem
Existing vehicle control systems fail to effectively prevent unsafe individuals from operating vehicles, as they often rely on disabling the ignition, which can be circumvented and poses risks during operation, particularly on busy roads.
Innovation Solution
A SmartFuse system integrated into a vehicle's fuse box, utilizing a microprocessor-controlled normally open electrical contact and wireless communication circuitry, which allows only authorized drivers to start the vehicle by matching their identity with a list stored on a smartphone app connected to the vehicle's network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the ignition is disabled to prevent unsafe drivers from operating the vehicle, then safety is improved, but the system becomes vulnerable to circumvention and may become disabled during operation
Solution Approach 1:
Instead of disabling the ignition for unsafe drivers, the system inverts the approach by enabling the ignition only for authorized drivers. The SmartFuse remains normally open and only closes when an authorized driver is identified, fundamentally changing from a prohibition-based system to an authorization-based system that is inherently more secure and less vulnerable to circumvention
2Reliability
If a breathalyzer device is integrated with ignition circuitry to prevent drunk driving, then alcohol-related safety is improved, but the system can be easily circumvented by renting or stealing a vehicle
Solution Approach 1:
The system extends beyond single-function alcohol detection to multi-functional driver identification and authorization. By integrating multiple identification methods (biometric, RFID, smartphone app) and maintaining authorization records in the cloud, the system creates multiple layers of security that must all be bypassed simultaneously, making circumvention significantly more difficult than simple vehicle theft
3Reliability
If the ignition is disabled for a specific unsafe person, then that person's safety risk is reduced, but the system lacks flexibility for authorized drivers who need to operate the vehicle
Solution Approach 1:
The system transitions from a static ignition disablement to a dynamic authorization system. The SmartFuse can change state based on real-time driver identification, and the authorization database can be dynamically updated to add or remove drivers. This allows the system to adapt to different situations - blocking unsafe drivers while permitting authorized ones - without requiring physical reconfiguration
Data Source
AI summary
A system for enabling a user to start a vehicle has a SmartFuse with a terminal coupled to vehicle battery voltage and a terminal coupled to a vehicle element to be powered to start the vehicle. The SmartFuse has a microprocessor, a first data repository, a normally open electrical contact in a conductor connected in series with a fuse filament, and first wireless communication circuitry. A smartphone executing a mobile application stores a list of identities of drivers authorized to operate the vehicle. A candidate driver identifies to the mobile application which determines if the candidate driver is on the list. If so, the smartphone signals the first microprocessor in the SmartFuse to close the normally open electrical contact in the SmartFuse, enabling the vehicle to be started.