Vehicle Parking Assistance Using Spatialized Audio
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Solution Overview
Problem
Conventional parking assistance devices rely on visual displays and auditory signals that require driver attention, failing to provide exact obstacle distance and position information effectively, especially in vehicles without displays and those with hearing impairments.
Innovation Solution
A parking assistance method using ultrasonic sensors to detect obstacles and generate human speech voice messages that convey distance, position, and nature of obstacles, with spatialized audio and adaptable language, allowing drivers to understand critical information without visual or auditory distractions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If visual displays are used to indicate obstacle position, then exact distance information is provided, but driver visual attention is required causing distraction
Solution Approach 1:
The patent replaces the visual display system with an acoustic signal system. Instead of using a screen to show obstacle distance and position, the system uses spatialized audio signals that convey the same information through sound direction and characteristics, allowing the driver to receive precise obstacle information without visual distraction.
Solution Approach 2:
The patent introduces an acoustic intermediary system that translates obstacle detection data into spatial audio signals. The audio system acts as a mediator between the obstacle detection sensors and the driver, conveying precise distance and position information through sound spatialization rather than direct visual display.
2Measurement precision
If loudspeaker arrays are used to indicate obstacle directivity, then spatial information is provided, but driver hearing ability is required which is not always available
Solution Approach 1:
The patent creates a universal communication system that can effectively convey obstacle information to all drivers regardless of their sensory capabilities. By using spatialized audio with visual confirmation options, the system ensures that both drivers with normal hearing and those with hearing impairments can receive and understand obstacle position and distance information.
Solution Approach 2:
The patent incorporates feedback mechanisms where the system adapts its output based on driver response and environmental conditions. The audio-visual system provides feedback loops that ensure information is effectively communicated, allowing drivers with various sensory capabilities to understand obstacle information through their preferred sensory channel.
3Ease of operation
If conventional beep signals are used, then warning is provided, but exact distance information is not conveyed to the driver
Solution Approach 1:
The patent changes the parameters of the acoustic signal to encode distance information. Instead of using simple beep signals, the system varies audio parameters such as frequency, duration, intensity, and spatial position to convey specific distance and position information about obstacles, allowing the driver to understand both the warning and the precise nature of the hazard.
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
Enables drivers to receive clear, intuitive, and critical information about obstacles without visual or auditory distractions, enhancing safety during parking maneuvers, even in vehicles without displays or for those with hearing impairments.
Implementation Method 1
A parking assistance method using ultrasonic sensors to detect obstacles
Data Source
AI summary
A method for vehicle parking assistance during a parking maneuver of the vehicle includes detecting an obstacle in a detection space outside the vehicle. Successive measurements are taken of the distance or distances separating the vehicle and the obstacle and the position or positions of the obstacle relative to the vehicle. Depending on the results of the measurements, human speech voice messages are generated that provide parking assistance. The voice messages are broadcasted in the passenger compartment of the vehicle.