Driving Assistance Control for Erroneous Switch Operation Handling
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Solution Overview
Problem
Conventional vehicle driving assistance systems may inadvertently prevent driving assistance controls due to erroneous switch operations by the driver, failing to consider the possibility of accidental switch activation based solely on road type.
Innovation Solution
The system determines an erroneous operation probability by considering driver frequency, market operation frequency, and recommendation degree, adjusting the execution state of driving assistance controls based on these factors, and optionally notifying the driver for approval before changing the state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the driving assistance control is started based only on road type detection, then the control can be activated on suitable roads, but it may fail to activate even when the driver intends to use it (false negative due to overly restrictive conditions)
Solution Approach 1:
The system changes the parameter for determining control activation from a binary road-type-based decision to a probabilistic decision based on erroneous operation probability. This probability is dynamically adjusted based on multiple factors including switch operation frequency, road type, and environmental conditions, allowing flexible activation decisions that balance reliability and ease of operation.
Solution Approach 2:
The system implements feedback by monitoring switch operation patterns and using this information to adjust the erroneous operation probability. When a switch is operated, the system evaluates the current situation (road type, weather, operation history) and determines whether to activate the control based on the calculated probability, creating a closed-loop system that learns from past operations.
2Ease of operation
If switches are provided on the steering wheel for easy operation, then the driver can easily activate driving assistance control, but the driver may operate the switches by mistake
Solution Approach 1:
The system applies dynamics by making the activation threshold dynamic rather than fixed. The erroneous operation probability is continuously updated based on real-time conditions such as road type, weather, and switch operation frequency. This allows the system to be more permissive under conditions where mistakes are less likely and more restrictive when mistakes are more probable, resolving the contradiction between ease of operation and reliability.
3Reliability
If the system restricts driving assistance control activation to prevent erroneous operations, then false activations are reduced, but legitimate activations are also prevented (false negatives)
Solution Approach 1:
The system performs preliminary action by pre-calculating and storing erroneous operation probabilities for different road types and conditions before actual switch operations occur. When a switch is operated, the system quickly retrieves and applies the pre-computed probability rather than performing complex real-time analysis, enabling fast and accurate activation decisions that prevent erroneous operations while allowing legitimate ones.
Data Source
AI summary
A vehicle driving assistance apparatus executes a driving assistance control to assist a driver of an own vehicle in driving operations. When an erroneous operation probability is equal to or less than a predetermined erroneous operation probability upon detecting a change operation performed by the driver to request a change in an execution state of the driving assistance control, the apparatus changes the execution state as requested by the detected change operation. The erroneous operation probability indicates a possibility that the driver erroneously performed the change operation, and increases as the possibility increases. When the erroneous operation probability is greater than the predetermined erroneous operation probability upon detecting the change operation, the apparatus does not change the execution state or perform a more gradual change in the execution state than requested by the detected change operation.