Keyless Vehicle Authentication System for Unauthorized Operation Prevention
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Solution Overview
Problem
Current keyless ignition systems fail to adequately authenticate the presence of an authorized portable transceiver after the vehicle has been started, leading to potential unauthorized use or stranding if the transceiver is left outside.
Innovation Solution
A keyless authentication system utilizing a single controller device that wirelessly authenticates the presence of an authorized portable transceiver, including a sensor to transmit inquiry signals and shut off the vehicle's power plant if an unauthorized response is received when the brake or clutch pedal is pressed, ensuring the vehicle cannot be driven away without the authorized transceiver.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the vehicle allows starting without continuous transceiver presence, then ease of operation is improved, but security deteriorates as unauthorized users can drive the vehicle away
Solution Approach 1:
The system performs preliminary authentication of the portable transceiver before allowing the vehicle to be driven. The control module checks for the presence of an authorized transceiver in advance (when the ignition is on but the vehicle is not yet in drivable gear) and prevents engine shutdown by verifying authorization before the critical driving action occurs.
Solution Approach 2:
The system continuously monitors transceiver presence through wireless communication between the control module and portable transceiver. When the vehicle is in drivable gear, the system provides feedback by shutting off the engine if no authorized transceiver is detected, creating a closed-loop security mechanism that responds to real-time authentication status.
2Reliability
If the system continuously checks for transceiver presence, then security is improved, but device complexity increases
Solution Approach 1:
The control module performs multiple functions: it manages engine operation, monitors transmission gear position, and conducts wireless authentication of the portable transceiver. By consolidating these functions in a single control module rather than adding separate dedicated authentication hardware, the system achieves continuous security monitoring without proportionally increasing device complexity.
Solution Approach 2:
The portable transceiver contains embedded authentication credentials that automatically respond to inquiry signals from the control module. The transceiver serves itself by continuously broadcasting or responding to authentication requests without requiring active user intervention, thereby maintaining security without adding complex user interface elements.
3Reliability
If the engine shuts off without authorized transceiver, then security is improved, but loss of time occurs when operator accidentally leaves transceiver outside
Solution Approach 1:
The system performs authentication checking in advance when the ignition is on but the vehicle is not yet in drivable gear. This preliminary check allows the operator to correct the situation (retrieve the transceiver) before the engine shuts off, preventing both unauthorized driving and accidental stranding by providing a warning state before critical action occurs.
Solution Approach 2:
The system provides a cushioning period between ignition-on and drivable-gear states where authentication is verified but the engine will not shut off immediately. This creates a buffer zone that allows operators to respond to authentication failures without immediate engine shutdown, reducing the harshness of the security mechanism while maintaining its effectiveness.
Data Source
AI summary
The present teachings provide for a keyless authentication system for a vehicle including a sensor, a control module, and a portable transceiver and a method of authenticating the portable transceiver. The sensor can be configured to transmit a first sensor signal when a brake or clutch pedal of the vehicle is pressed. The control module can be configured to receive the first sensor signal and to wirelessly transmit a first inquiry signal if a power plant of the vehicle is on and the control module receives the first sensor signal. The portable transceiver can be configured to receive the first inquiry signal and to wirelessly transmit a first response signal in response to receiving the first inquiry signal. The control module can be configured to receive the first response signal and to shut off the power plant of the vehicle if the first response signal is not an authorized signal.