Steering Vibration Warning System with Cumulative Duration Control
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Solution Overview
Problem
Existing driver warning systems that use steering wheel vibrations to alert drivers of imminent danger often deteriorate the steering function, requiring expensive over-sizing of the steering system and are unreliable due to variability among drivers.
Innovation Solution
A warning system that includes a vibration device connected to the steering system with a control unit that monitors the cumulative duration of vibrations and switches to alternative sensory signals, such as audio alerts, once the vibration duration exceeds a threshold, preventing mechanical fatigue and wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the steering system is over-sized to make it more robust to vibration, then the steering system becomes more reliable, but the cost increases
Solution Approach 1:
The vibration warning system serves itself by monitoring its own usage through the memory unit. By tracking cumulative vibration duration and self-regulating activation based on stored data, the system protects the steering system without requiring external protection mechanisms or oversized components, thereby reducing manufacturing costs
2Ease of operation
If vibrations are used for driver warning, then the driver is alerted effectively, but the steering system experiences wear and tear
Solution Approach 1:
The memory unit performs preliminary action by recording and storing vibration activation data before the steering system suffers damage. This proactive tracking allows the control unit to prevent excessive vibrations in advance, protecting the steering system while maintaining effective driver warnings
Solution Approach 2:
The system uses periodic vibration activations rather than continuous vibrations. By controlling the cumulative duration through the memory unit and comparing against threshold values, the system provides effective periodic warnings while allowing the steering system sufficient rest periods to avoid fatigue and wear
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
Ensures effective driver warning without compromising the durability of the steering system, allowing for continuous operation while reducing wear and tear, and is adaptable to various driver types at a lower cost.
Implementation Method 1
The vibrations introduced by the assist engine propagate in the steering column and then the steering wheel, thus transmitting the vibrations to the driver
Data Source
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AI summary
System for warning a driver for automotive vehicle, said system comprises: a first sensory element (17) linked with a system of the vehicle (1) able to emit a sensory signal to the driver, a second sensory element (29) able to emit a sensory signal to the driver, a means of detecting danger (19), a control command unit (21) generating an activation signal for the first sensory element as a function of the detection of a danger by the detection means (19). According to the invention, the system comprises a memory (25) of the aggregate duration of the first sensory element (17) and a means (23) of comparing the aggregate duration with a threshold value (S), and in that the control command unit (21) generates a signal controlling the first sensory element (17) and/or a second sensory element (29) as a function of the comparing means (23).