Vehicle Antenna Authentication Using Target Communication Position
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Solution Overview
Problem
The communication area between an on-vehicle device and a wireless key can become inappropriate when the user arbitrarily varies the setting level of radio waves, leading to potential security and functionality issues.
Innovation Solution
An on-vehicle communication system with an antenna for close-range communication 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 to ensure proper alignment and prevent inappropriate communication areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the user arbitrarily varies the setting level of radio waves of the wireless key, then the communication area can be adjusted to different sizes, but the communication area may become inappropriate leading to security and functionality issues
Solution Approach 1:
The system changes the radio wave setting level parameter dynamically based on the detected communication area. The control portion adjusts the radio wave level automatically to maintain an appropriate communication area, preventing both excessive and insufficient coverage while eliminating the need for manual user adjustment.
2Area of stationary object
If the radio wave strength threshold is set low to expand communication area, then more users can connect, but the communication area becomes inappropriate and security is compromised
Solution Approach 1:
The control portion continuously detects the actual communication area and compares it with the target communication area. Based on this feedback, the system automatically adjusts the radio wave setting level to maintain the appropriate communication area, preventing both over-expansion and under-coverage while ensuring security requirements are met.
3Reliability
If the radio wave strength threshold is set high to secure communication area, then security is improved, but the communication area becomes too limited for practical use
Solution Approach 1:
The system dynamically adjusts the radio wave setting level based on real-time detection of communication area conditions. Rather than using a fixed high threshold that would limit coverage, the control portion continuously adapts the radio wave level to maintain both security and adequate coverage, allowing the communication area to be appropriately sized for practical use while meeting security requirements.
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 effectively prevents inappropriate communication areas, ensuring secure and reliable communication between the on-vehicle device and the user terminal device by guiding the user to the optimal position for radio wave alignment.
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.