Turn Indicator Diagnosis Using Steering and Speed Signals
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Solution Overview
Problem
Existing driving diagnosis systems struggle with low accuracy in determining short-time turn indicator operations, which can lead to safety issues and inconvenience to surrounding vehicles due to the inability to differentiate between erroneous operations and legitimate course changes.
Innovation Solution
A server and vehicle system that acquires and analyzes turn indicator operation time, steering angular velocity, and vehicle speed to differentiate between short-time turn indicators and legitimate operations, using predefined thresholds to improve diagnostic precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If turn indicator operation time alone is used for diagnosis, then the diagnosis process is simple, but the diagnostic precision is low
Solution Approach 1:
The patent applies parameter changes by introducing multiple diagnostic parameters (steering angular velocity, vehicle speed) in addition to turn indicator operation time. The control unit determines short-time turn indicators by evaluating combinations of these parameters against predefined thresholds, thereby improving diagnostic precision through multi-parameter analysis rather than relying on time alone.
2Measurement precision
If multiple parameters are analyzed for turn indicator diagnosis, then diagnostic precision improves, but processing complexity increases
Solution Approach 1:
The system implements feedback by continuously monitoring multiple parameters (turn indicator operation time, steering angular velocity, vehicle speed) and comparing them against predefined thresholds. The control unit provides diagnostic feedback by determining whether a short-time turn indicator has occurred based on the combined evaluation of these parameters, enabling precise identification of erroneous operations.
3Reliability
If short-time turn indicators are not accurately identified, then processing is simpler, but safety risks increase
Solution Approach 1:
The patent improves safety by changing from single-parameter (time) diagnosis to multi-parameter diagnosis involving turn indicator operation time, steering angular velocity, and vehicle speed. This comprehensive parameter analysis enables accurate identification of short-time turn indicators, thereby reducing safety risks associated with erroneous operations.
Data Source
AI summary
The control unit of the server acquires first information including a turn indicator operation time, a steering angular velocity, and a vehicle speed when the turn indicator is operated, from the first vehicle. Based on the acquired first information, the control unit of the server determines that the turn indicator operation performed in the first vehicle is an operation for notifying the behavior of the first vehicle and the turn indicator operation time is It is determined whether or not the operation corresponds to a short-time turn indicator, which is an operation that is equal to or less than the first time length.