Keyless Ignition Interference Reduction via Device Deactivation
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Solution Overview
Problem
Conventional keyless ignition systems are susceptible to magnetic or electrical interference due to operating at low power levels and frequency bands, which can impede or prevent authentication, frustrating vehicle users.
Innovation Solution
A control system that temporarily deactivates potential interference sources within the vehicle during authentication, such as wireless charging systems and AC inverter circuits, and reactivates them upon successful validation, ensuring uninterrupted authentication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If keyless ignition systems operate at low power levels to limit authentication zone to passenger compartment, then security is improved, but susceptibility to magnetic or electrical interference increases
Solution Approach 1:
The control system temporarily deactivates potential interference sources (wireless charging systems, AC inverter circuits) before initiating the authentication process. This preliminary action prevents interference from occurring during authentication, resolving the contradiction by proactively eliminating harmful factors rather than increasing power levels.
Solution Approach 2:
The patent extracts and isolates the authentication process from interfering devices by temporarily removing their operational status during authentication. The control system separates the authentication function from other vehicle systems that may generate interference, allowing low-power authentication to proceed without susceptibility to magnetic or electrical interference.
2Reliability
If potential interference sources are permanently deactivated to prevent authentication interference, then authentication reliability is improved, but vehicle functionality and user convenience deteriorate
Solution Approach 1:
The control system dynamically adjusts the operational status of potential interference sources based on the authentication state. Devices are temporarily deactivated only when needed for authentication and automatically reactivated afterward, providing a dynamic solution that maintains both authentication reliability and vehicle functionality without permanent deactivation.
Solution Approach 2:
The system implements periodic deactivation of interference sources synchronized with the authentication process. The control system temporarily disables devices during authentication periods and restores them during normal operation periods, creating a periodic pattern that ensures authentication reliability while preserving ease of operation for vehicle functions.
3Object-affected harmful factors
If authentication process is delayed to manage interference, then interference reduction is improved, but user frustration and system efficiency worsen
Solution Approach 1:
The control system performs preliminary deactivation of interference sources immediately upon detecting an authentication event, before the authentication signal exchange begins. This timing optimization ensures interference reduction is achieved without delaying the actual authentication process, as the deactivation occurs in advance rather than during the critical authentication window.
Data Source
AI summary
Methods and apparatus are provided for interference reduction during keyless authentication. The apparatus includes a control system having a controller configured to detect an authentication event and deactivate at least one device within the vehicle. The control system is also configured to transmit an authentication command and to reactive the at least one device within the vehicle in response to receiving a valid authentication signal. The method includes an authentication method for a user to operate a vehicle wherein an authentication event is detected and at least one device within the vehicle is deactivated. An authentication command is transmitted and the at least one device within the vehicle is reactivated in response to receiving a valid authentication signal.