Vehicle Smart Key Authentication Using Terminal Proximity Detection
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Solution Overview
Problem
There is a need for a method to enable users to easily operate vehicles using their terminals, as traditional smart keys with UHF and LF modules are difficult to mount on smartphones due to size constraints and result in increased power consumption and heating.
Innovation Solution
A key authentication method using a terminal that receives and transmits signals through multiple communication modules to determine proximity to a vehicle, changing the vehicle's control mode based on the terminal's location, allowing for secure and efficient operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If UHF and LF modules are mounted on smartphones to enable vehicle operation, then vehicle control functionality is improved, but power consumption and heating increase
Solution Approach 1:
The patent extracts the UHF and LF communication modules from the smartphone and relocates them to the vehicle-mounted device. This allows the smartphone to function as a remote controller using only its existing communication capabilities, while the energy-intensive modules remain in the vehicle where they can operate without contributing to smartphone battery consumption or heating.
Solution Approach 2:
The vehicle-mounted device serves as an intermediary between the smartphone and the vehicle's control systems. It receives authentication signals from the smartphone, performs the actual vehicle control operations, and manages the power-intensive communication functions, thereby protecting the smartphone from excessive power consumption.
2Adaptability or versatility
If UHF and LF modules are mounted on smartphones to enable vehicle operation, then vehicle control functionality is improved, but heating increases
Solution Approach 1:
The patent extracts the UHF and LF communication modules from the smartphone and relocates them to the vehicle-mounted device. This allows the smartphone to function as a remote controller using only its existing communication capabilities, while the energy-intensive modules remain in the vehicle where they can operate without contributing to smartphone battery consumption or heating.
3Reliability
If traditional smart keys are used for vehicle operation, then reliable authentication is achieved, but ease of operation is reduced due to size constraints
Solution Approach 1:
The patent makes the smartphone serve multiple functions: it acts as both a remote controller and an authentication device. By utilizing the smartphone's existing communication modules and combining them with the vehicle-mounted device, the system achieves reliable authentication while maintaining the operational convenience of using a universally carried device like a smartphone.
Solution Approach 2:
The system creates a functional copy of the traditional smart key authentication mechanism within the vehicle-mounted device, which then communicates with the smartphone. This allows the smartphone to replace the physical smart key without requiring the smartphone itself to contain the specialized UHF/LF modules, thus maintaining authentication reliability while improving ease of operation.
Data Source
AI summary
A key authentication method of an apparatus is provided. The key authentication method includes receiving a signal from a terminal using a plurality of communication modules, determining whether the terminal is within a predetermined distance from the apparatus, on the basis of each signal received via the plurality of communication modules, and changing a control mode of a vehicle on which the apparatus is mounted, on the basis of whether the terminal is within the predetermined distance from the apparatus.