In-Cabin Mobile Terminal Threshold Tuning for Reliable Detection
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Solution Overview
Problem
Existing vehicle detection systems may erroneously detect that a mobile terminal is not present in the cabin when it actually is, due to setting the detection threshold too high.
Innovation Solution
A threshold setting device that dynamically adjusts the detection threshold based on the presence or absence of a mobile terminal in the cabin, ensuring accurate detection by changing the threshold to a smaller value when the mobile terminal is not detected and returning to a larger value when an external mobile terminal is detected.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the detection threshold is set to be high, then the reliability of avoiding false positive detection is improved, but the measurement precision of detecting mobile terminal presence deteriorates
Solution Approach 1:
The patent applies dynamics by making the detection threshold adjustable rather than fixed. The threshold can be dynamically changed based on detection results: when no mobile terminal is detected, the threshold is lowered to improve detection sensitivity; when external terminals are detected, the threshold is raised to maintain reliability. This dynamic adjustment resolves the contradiction between reliability and measurement precision.
Solution Approach 2:
The patent changes the threshold parameter based on detection conditions. By adjusting the threshold value according to whether mobile terminals are detected and their location (internal vs external), the system optimizes both reliability and measurement precision. The threshold parameter is modified to adapt to different operational states, resolving the trade-off between avoiding false positives and detecting actual presence.
2Reliability
If the detection threshold is set to be high, then the reliability of avoiding false positive detection is improved, but the productivity of detection coverage becomes insufficient
Solution Approach 1:
The system dynamically adjusts the detection threshold based on operational conditions. When no mobile terminal is detected, the threshold is lowered to expand detection coverage and improve productivity. When external terminals are detected, the threshold is raised to maintain reliability. This dynamic behavior resolves the contradiction between reliability and detection coverage.
Solution Approach 2:
The threshold parameter is changed based on detection results to balance reliability and productivity. By adjusting the threshold value according to whether mobile terminals are detected and their location, the system expands coverage when needed while maintaining reliability, resolving the contradiction between these two parameters.
Data Source
AI summary
When it is not determined that the execution device has detected the in-cabin mobile terminal, the execution device changes the threshold by a specified amount. Thereafter, when it is determined that the execution device detects the in-cabin mobile terminal and the execution device does not detect the external mobile terminal, the execution device ends the setting of the threshold. When the execution device detects the external mobile terminal after the process of changing the threshold to be small, the execution device changes the threshold to be larger than the value after the threshold is changed to be small. The execution device terminates the setting of the threshold after greatly changing the threshold.