Vehicle Seat Drive Device Reciprocating Vibration for Driver Alert
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Solution Overview
Problem
Existing vehicle safety systems face challenges in securely and cost-effectively calling a driver's attention through physical sensations, as they require additional installation space and components, and existing vibration-based systems are not optimized for diverse attention states.
Innovation Solution
An attention calling system for vehicle seats that incorporates drive devices to adjust seat positions or parts in both positive and negative directions at a predetermined speed, using a vehicle information acquisition unit and control unit to determine attention states and control the drive devices to create vibrations at higher speeds, thereby intuitively alerting the driver.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a drive device is added to generate vibration for calling driver's attention, then attention calling effectiveness is improved, but device complexity and cost increase
Solution Approach 1:
The patent makes the existing seat drive device perform multiple functions: it continues to adjust seat position for comfort while simultaneously generating vibration for driver attention calling when safety risks are detected. This eliminates the need for a separate vibration generation device, reducing device complexity and cost while maintaining attention calling effectiveness.
2Reliability
If a separate vibration generation device is installed to call driver's attention, then attention calling effectiveness is improved, but installation space requirements increase
Solution Approach 1:
The patent merges the vibration generation function with the existing seat drive device. The same motor and mechanical structure used for seat position adjustment are utilized to generate attention-calling vibrations, eliminating the need for separate vibration generation components and reducing installation space requirements.
3Reliability
If the seat moves at high speed to generate vibration, then attention calling effectiveness is improved, but energy consumption increases
Solution Approach 1:
The patent implements periodic reciprocating motion of the seat at controlled frequencies to generate vibrations that effectively call the driver's attention. By using periodic action rather than continuous high-speed movement, the system achieves attention calling effectiveness while managing energy consumption through controlled, intermittent operation.
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
The system effectively calls the driver's attention through vibrations without the need for additional components, securely alerting the driver across various attention states, and can be integrated into existing electronic control units for seat position adjustment, enhancing attention recovery without increasing costs.
Implementation Method 1
the seat or the predetermined part of the seat reciprocally moves in both positive and negative directions with reference to a current position at a speed higher than the predetermined speed
Data Source
AI summary
An attention calling system for a vehicle seat having one or more drive devices incorporated therein, the attention calling system including: a vehicle information acquisition unit that is configured to acquire vehicle information; and a control unit that is configured to determine based on the vehicle information whether it is an attention state in which seated person's attention should be called and controls at least one of the drive devices when it is determined that it is the attention state, wherein the control unit is configured to control the at least one drive device so that the seat or the predetermined part of the seat reciprocally moves in both positive and negative directions with reference to a current position at a speed higher than a predetermined speed, in correspondence to the attention state.