Steering Support Mode Switching During Window Cleaning
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Solution Overview
Problem
Existing driving support devices face instability in steering control when performing a cleaning process, as it temporarily disrupts the vehicle's ability to detect surroundings, potentially causing the vehicle to deviate from its intended lane.
Innovation Solution
A driving support device that selectively switches between two steering support modes based on the driver's state and the reliability of the vehicle's surroundings information, allowing cleaning only when the driver is confirmed to be touching the steering wheel in the first mode, thereby minimizing lane deviation during cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a cleaning process is performed during execution of steering support control, then the protective window is cleaned to improve detection accuracy, but the camera temporarily cannot detect vehicle-surroundings information causing steering support control to become destabilized
Solution Approach 1:
The system dynamically switches between two steering support control modes (first mode and second mode) depending on whether cleaning is required. When cleaning is detected, the system transitions from the first steering support control to the second steering support control, allowing the cleaning process to proceed without destabilizing the steering control. This dynamic adaptation resolves the contradiction by making the control system flexible enough to accommodate temporary detection disruptions while maintaining overall stability.
Solution Approach 2:
The system changes the control parameters by switching between different control modes. In the first mode, normal steering support control is applied. When cleaning is required, the system switches to the second mode with modified control parameters that account for the temporary loss of detection data. This parameter change allows the system to maintain stable steering control even during the cleaning process when detection accuracy would otherwise be compromised.
2Reliability
If the electric control unit always executes steering support control based on real-time vehicle-surroundings information, then the vehicle can maintain precise lane position, but cleaning of the protective window cannot be performed without causing lane deviation
Solution Approach 1:
The steering support control is segmented into two distinct modes: the first steering support control for normal operation with real-time detection, and the second steering support control for operation during cleaning. This segmentation allows the system to optimize for position accuracy during normal operation while enabling cleaning operations without causing lane deviation, as each mode is designed for its specific operational context.
Solution Approach 2:
The system performs preliminary assessment by detecting whether a cleaning process is required before executing the cleaning. When cleaning is detected, the system proactively switches to the second steering support control mode in advance, ensuring that the steering control is already adapted when the cleaning begins. This preliminary action prevents lane deviation by preparing the control system before the detection disruption occurs.
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 ensures that the vehicle remains stable and on course during cleaning by allowing immediate driver correction in the first mode, reducing the likelihood of prolonged lane deviation and maintaining effective steering control.
Implementation Method 1
a cleaning device configured to preform to clean by spraying at least one of a cleaning fluid and air onto the window portion
Data Source
AI summary
A driving support device includes an electric control unit and a cleaning device. The electric control unit is configured to select one mode of a first mode based on a premise that a driver is touching a steering wheel and a second mode not based on the premise that the driver is touching the steering wheel. The electric control unit is configured to permit cleaning of the cleaning device when a cleaning request is issued and the mode is the first mode and to prohibit cleaning of the cleaning device when the mode is the second mode.