Driver Assistance Warning Sequence With Kinesthetic Jerk
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Solution Overview
Problem
Existing driver assistance systems in vehicles often fail to provide reliable warnings that effectively inform drivers of impending interventions, particularly when multiple sensory channels are required for safety-critical situations.
Innovation Solution
A method involving a combination of optical, acoustic, and kinesthetic warnings, including a first warning signal and a subsequent main warning, with the kinesthetic jerk being a secondary signal to enhance criticality and ensure perception across different sensory channels, particularly using an electric drive to generate a brief and subtle longitudinal acceleration change.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single warning signal is used to inform the driver, then the device complexity is reduced, but the reliability of the warning is insufficient for safety-critical situations
Solution Approach 1:
The warning system is segmented into multiple independent warning channels (optical, acoustic, haptic) that can be activated individually or in combination. Each channel operates independently to convey the same warning information, ensuring that the failure of one channel does not compromise overall warning reliability.
Solution Approach 2:
The patent transitions from a single-dimensional warning approach to a multi-dimensional warning system by incorporating multiple sensory modalities (visual, auditory, tactile). This dimensional expansion ensures that warnings are perceived through at least one channel even if others fail, thereby improving reliability without proportionally increasing complexity.
2Reliability
If multiple warning signals are used to ensure driver perception, then the reliability of the warning is improved, but the device complexity increases
Solution Approach 1:
The warning system employs multiple warning signals that serve the same universal function of alerting the driver to hazardous situations. Each warning channel (optical, acoustic, haptic) is designed to perform the same core function, allowing the system to achieve high reliability through functional redundancy rather than through complex differentiated functions.
3Reliability
If a kinesthetic jerk is used as a warning signal, then the warning reliability is improved through multiple sensory channels, but the vehicle kinematics are influenced
Solution Approach 1:
The kinesthetic jerk is applied locally and temporarily to provide tactile feedback to the driver without significantly affecting the overall vehicle motion. The jerk is confined to a short duration and specific magnitude range that ensures driver perception while minimizing impact on vehicle kinematics and passenger comfort.
Solution Approach 2:
The patent carefully controls the parameters of the kinesthetic jerk (magnitude, duration, timing) to optimize the balance between warning effectiveness and vehicle kinematics disturbance. By adjusting these parameters, the system achieves sufficient driver alertness while keeping the disturbance to vehicle motion within acceptable limits.
4Reliability
If the kinesthetic jerk is made more pronounced to ensure driver perception, then the warning reliability is improved, but the annoyance to passengers increases
Solution Approach 1:
The kinesthetic jerk is calibrated to apply partial action - sufficient to ensure driver perception of the warning but not excessive to cause significant passenger annoyance. The magnitude and duration are optimized to achieve the minimum necessary effect on the driver while keeping the disturbance to passengers within tolerable limits.
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
Enhances warning reliability by ensuring the driver perceives the warning through multiple channels, minimizing vehicle kinematics influence and reducing annoyance, thus meeting safety and regulatory requirements.
Implementation Method 1
the second warning signal comprises a kinesthetic jerk; and providing a main warning subsequent to the advance warning before the intervention, wherein the main warning comprises an acoustic and/or an optical warning signal
Implementation Method 2
The kinesthetic jerk preferably comprises a temporary change in the longitudinal acceleration of the motor vehicle
Data Source
AI summary
A method for operating a driver assistance system includes capturing information indicating an imminent intervention of the driver assistance system in the guidance of the motor vehicle, providing an advance warning directed to a driver of the motor vehicle before the intervention, the advance warning comprising a first and a second warning signal, the first warning signal being optically and/or acoustically and/or haptically output, and the second warning signal comprising a kinesthetic jerk. The method also includes providing a main warning before the intervention, the main warning being subsequent to the advance warning, and the main warning comprising an acoustic warning signal and/or an optical warning signal.