Vehicle Unlocking Control Using Shielding-Corrected Signal Strength
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Solution Overview
Problem
Existing unlocking systems for vehicles face accuracy issues in determining the positional relationship between a wireless terminal and a vehicle due to shielding bodies, leading to incorrect lock release and reduced user convenience.
Innovation Solution
An unlocking system that corrects lock release control based on strength information of wireless signals using shielding information to improve accuracy and convenience by analyzing radio wave strength and shielded states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the lock release control is based on the strength information of wireless signals, then the unlocking process can be automated and convenient, but the accuracy of determining positional relationship deteriorates when shielding bodies exist
Solution Approach 1:
The patent changes the parameter used for unlocking determination from raw signal strength to corrected signal strength that compensates for shielding effects. By introducing shielding information and correcting the strength information accordingly, the system maintains measurement accuracy despite the presence of shielding bodies, thus resolving the contradiction between automated convenience and measurement precision.
2Measurement precision
If shielding information is acquired and used to correct strength information, then the accuracy of unlocking control is improved, but the device complexity increases
Solution Approach 1:
The patent introduces shielding information as an intermediary element that mediates between the raw signal strength and the final unlocking decision. This shielding information acts as a correction factor that accounts for shielding effects without requiring fundamental changes to the system architecture, thus improving accuracy while minimizing the increase in device complexity.
3Measurement precision
If the lock is not released when actual positional relationship satisfies predetermined condition due to shielding, then measurement accuracy is maintained, but user convenience deteriorates
Solution Approach 1:
The patent converts the harmful effect of shielding bodies into a beneficial correction mechanism. By detecting and quantifying shielding effects through shielding information, the system can compensate for the signal attenuation caused by shielding, thus maintaining user convenience even when shielding bodies are present, while preserving measurement accuracy through the correction process.
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
Enhances the accuracy of unlocking processes and improves user convenience by accounting for shielded states, ensuring accurate lock release.
Implementation Method 1
a wireless signal transmitted from a wireless terminal (10), transferred via radio waves, and received by antennas (20a to 20e)
Data Source
AI summary
There is provided an unlocking system capable of improving convenience of a user. An unlocking system 100 includes: a DK acquisition unit 30a that acquires strength information RI on strength of radio waves of a wireless signal received by receiving antennas 20a to 20e; and a DK execution unit 30b and an unlocking execution unit 40b that execute a shielded state determining process Sa, a region determining process Sb, and an unlocking control process Sc as an unlocking process of controlling release of a lock 21, the DK execution unit 30b acquires shielding information SI on a shielded state of a wireless terminal 10 based on the strength information RI in the shielded state determining process Sa, and corrects the strength information RI by using the shielding information SI in the region determining process Sb, and the unlocking execution unit 40b executes control for releasing the lock 21 based on region information ZI acquired based on the corrected strength information RI in the unlocking control process Sc.