Vehicle Authentication Threshold Setting for Wireless Key Range
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Solution Overview
Problem
The communication area of an on-vehicle device can become inappropriate when the user arbitrarily varies the setting level of the radio waves of the wireless key.
Innovation Solution
An on-vehicle communication system that includes an antenna for close-range communication with a user terminal device and a control portion that executes an authentication process when the radio wave strength meets a threshold value, notifying the user of a target communication position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the user arbitrarily varies the setting level of the radio waves of the wireless key, then the communication area can be adjusted to different sizes, but the communication area may become inappropriate in some cases
Solution Approach 1:
The system measures the actual radio wave strength at the vehicle and uses this feedback to automatically adjust the communication area threshold, ensuring the communication area remains appropriate regardless of user settings on the wireless key
Solution Approach 2:
The system dynamically changes the communication area parameter based on measured radio wave strength, transitioning from fixed user-defined areas to dynamically adjusted areas that maintain appropriateness
2Ease of operation
If the communication area is expanded to accommodate user convenience, then the ease of operation improves, but the risk of unauthorized access increases
Solution Approach 1:
The system dynamically adjusts the radio wave strength threshold parameter based on actual measurement conditions, allowing the communication area to adapt to environmental factors while maintaining security appropriateness
Solution Approach 2:
The communication area is made dynamic rather than static, automatically adjusting its boundaries based on measured radio wave characteristics to balance accessibility and security
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
This solution prevents the communication area from becoming inappropriate, ensuring reliable communication between the on-vehicle device and the user terminal device.
Implementation Method 1
an antenna that is provided on a vehicle and performs a close-range communication with a user terminal device present in a communication area around the vehicle
Implementation Method 2
a control portion that is provided on the vehicle and executes a predetermined authentication process when a radio wave strength of a signal received from the user terminal device via the antenna
Data Source
AI summary
An on-vehicle communication system of an embodiment includes: an antenna that is provided on a vehicle and performs a close-range communication with a user terminal device present in a communication area around the vehicle; and a control portion that is provided on the vehicle and executes a predetermined authentication process when a radio wave strength of a signal received from the user terminal device via the antenna or a signal received by the user terminal device from the antenna is equal to or more than a threshold value, wherein the control portion notifies a user of information on a target communication position at which the user terminal device should be located when registering the threshold value by using a notification portion.