Steering Wheel Haptic Notification via Hand Position Sensing
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Solution Overview
Problem
Existing vehicle notification systems divert the driver's attention from the road with fixed alert conditions, lacking dynamic communication and often requiring visual or auditory focus, which can lead to sensory overload and decreased safety.
Innovation Solution
A steering wheel haptic notification system that uses capacitive sensors or imaging units to detect hand position and object proximity, dynamically controlling haptic elements to provide proprioceptive feedback, allowing for subconscious communication of object positions without diverting the driver's gaze.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If visual indicators or auditory cues are used to provide driver feedback, then communication with the driver is achieved, but driver attention is diverted from the road causing sensory overload
Solution Approach 1:
The notification system is segmented into multiple independent haptic elements distributed around the steering wheel circumference. Each element can be independently activated to convey different directional information, allowing the system to communicate complex spatial data through tactile feedback without requiring driver visual attention
Solution Approach 2:
The haptic notification elements act as an intermediary between the vehicle's sensor system and the driver. Instead of directly presenting visual or auditory information that competes for the driver's attention, the system translates object position data into tactile patterns on the steering wheel that the driver can perceive subconsciously through proprioception
2Adaptability or versatility
If fixed alert conditions are used for notifications, then simple binary communication is achieved, but dynamic communication capabilities are lost
Solution Approach 1:
The notification system transitions from static fixed-state alerts to dynamic haptic feedback that adapts in real-time based on detected hand position and object location. The haptic elements can be selectively activated around the steering wheel circumference to dynamically indicate directional information, allowing the system to convey nuanced spatial data rather than simple binary alerts
Solution Approach 2:
The system changes the parameter of notification delivery from visual/auditory fixed states to tactile dynamic states. By varying which haptic elements are activated and their activation patterns based on real-time sensor input, the system encodes directional and positional information in the tactile feedback, enabling adaptable communication without proportionally increasing system complexity
3Measurement precision
If haptic notification elements are activated based on fixed positions, then simple notification is achieved, but precise object position indication is lost
Solution Approach 1:
Different regions of the steering wheel are assigned different notification functions based on the spatial location of detected objects. By activating specific haptic elements at specific positions on the steering wheel circumference, the system provides localized tactile feedback that precisely indicates the direction and position of objects relative to the vehicle, with each zone of the steering wheel serving a specific directional purpose
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 reduces driver sensory overload by providing dynamic, subconscious notifications of object positions, enhancing safety by maintaining the driver's focus on the road while conveying critical information through tactile feedback.
Implementation Method 1
The detected hand position is detected by at least one capacitive sensor of the steering wheel
Data Source
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AI summary
The present disclosure relates to systems, devices and methods for steering wheel haptic notification. In one embodiment, a method includes receiving a detected hand position relative to a steering wheel of a vehicle and detecting at least one object relative to the vehicle. Based on the hand position, actuation of at least one haptic notification element of the steering wheel may be controlled to indicate position of the object. In certain embodiments, hand position may be detected by capacitive sensing of the steering wheel. In other embodiments, the vehicle may include an imaging device facing the steering wheel to determine hand position. Object location may be mapped to the steering wheel based on hand position. The actuators of the steering wheel may increase the steering wheel thickness or raise at least a portion of the actuator area to indicate the direction of a detected object.