Vehicle Sonar Warning Prioritization for Reduced Driver Annoyance
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Solution Overview
Problem
Existing vehicle obstacle detection systems using corner sensors may cause driver annoyance due to unnecessary warnings while moving, despite reduced separation from objects.
Innovation Solution
A driving assistance device that utilizes a processor to optimize notification contents based on detection values from sonar sensors, shift range, and steering angle, adjusting notification levels according to calculated priorities and travel direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If alarms are activated based on object detection by sonar sensors, then obstacle detection capability is improved, but driver annoyance increases due to unnecessary warnings while moving
Solution Approach 1:
The system changes the notification output parameters based on vehicle movement state. When the vehicle is moving, the notification output is suppressed or reduced even if objects are detected by sonar sensors. This parameter change resolves the contradiction by maintaining reliable obstacle detection while eliminating unnecessary warnings that cause driver annoyance during vehicle movement
Solution Approach 2:
The notification system dynamically adjusts its behavior based on real-time vehicle state (moving vs. stationary). The controller modifies notification output according to the detected vehicle movement condition, making the system adaptive rather than static. This dynamic adjustment ensures warnings are provided when needed (stationary state) while avoiding unnecessary alerts during movement
2Quantity of substance
If notifications are output for all detected objects, then detection coverage is improved, but information relevance deteriorates due to low-priority warnings
Solution Approach 1:
The system applies different notification priorities to different sonar sensors based on their individual detection contexts. By calculating separate priorities for each sensor according to vehicle travel direction and steering angle, the system ensures that locally relevant obstacles receive appropriate attention while reducing notifications for less critical detections, thus maintaining information relevance across the entire detection coverage area
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
Optimizes notification contents to reduce driver annoyance by prioritizing warnings based on the likelihood of object approach, ensuring timely attention to relevant obstacles.
Implementation Method 1
obtaining first detection values outputted from a plurality of sonar sensors provided in the vehicle
Implementation Method 2
detecting objects around a vehicle based on detection values from sonar sensors
Data Source
AI summary
A driving assistance device (10) having a processor (12) that executes a process of detecting objects around a vehicle (1), wherein the processor is configured to execute following processes: obtaining first detection values outputted from a plurality of sonar sensors provided in the vehicle, second detection values indicating the state of the shift range, and third detection values corresponding to the steering angle of the steering device, controlling a notification device (20) that operates in conjunction with the first detection values and adjusting notification contents to be output, calculating the relative distance between the vehicle and the objects existing around the vehicle based on the first detection values, determining the traveling direction of the vehicle based on the second detected values, calculating priorities according to the sonar sensors individually based on the traveling direction and the steering angle, adjusting the notification contents according to level of the priorities.