Portable Device Acoustic Signal Visual Feedback
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Solution Overview
Problem
Entry-level vehicles equipped with driver assistance systems lack display devices, relying solely on sound signals for information, which limits the driver's ability to receive reliable visual feedback during vehicle maneuvers, such as parking, without a display device.
Innovation Solution
A portable communication device, like a smartphone or PDA, is used to receive acoustic sound signals from the vehicle's driver assistance system, processing them to generate visual displays of information, such as distance to obstacles, using a microphone and processor, enabling optical feedback even without a built-in display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If entry-level vehicles are equipped with driver assistance systems using only sound output devices, then the cost of the vehicle is reduced, but the reliability of information transmission to the driver deteriorates
Solution Approach 1:
The portable communication device serves as an intermediary between the driver assistance system and the driver. It receives sound signals from the vehicle's speaker, processes them, and converts them into visual display information showing distance to obstacles, thereby enhancing the reliability of information transmission without requiring modifications to the vehicle itself
Solution Approach 2:
The system replaces the acoustic information channel with an optical information channel by using the portable device's display screen to show visual representations of distance data, substituting the sound-based feedback mechanism with a visual feedback mechanism that provides more reliable and interpretable information
2Loss of information
If display devices are installed in all vehicles to provide visual feedback, then the driver's ability to receive visual information is improved, but the cost of the vehicle increases
Solution Approach 1:
The portable communication device acts as an external intermediary that provides the display function normally requiring integration into the vehicle. By using the driver's existing portable device with a built-in display, the system delivers visual feedback without requiring the vehicle manufacturer to install additional display hardware
Solution Approach 2:
The portable communication device serves multiple functions: it acts as a display device for the driver assistance system, a communication device, and potentially other functions. This multi-functionality eliminates the need for dedicated vehicle-specific display hardware, reducing costs while maintaining visual feedback capability
3Device complexity
If sound signals are used to indicate distance information, then the device complexity is reduced, but the measurement precision of distance perception deteriorates
Solution Approach 1:
The system substitutes acoustic distance indication with visual distance representation on a display screen. The portable device receives the sound signal containing distance data and converts it into a visual display showing the distance to obstacles, providing more precise and easily interpretable distance perception while maintaining simple system architecture
Solution Approach 2:
The system changes the parameter of information presentation from acoustic frequency/intensity to visual spatial representation. By displaying distance as a visual parameter on the screen rather than encoding it in sound characteristics, the system achieves more precise distance perception without increasing device complexity
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
This solution allows drivers to receive accurate and reliable visual information about the vehicle's distance to obstacles, enhancing parking precision and preventing collisions, even in vehicles without display devices, by converting sound signals into graphical displays on a portable device.
Implementation Method 1
acoustic sound is received by a microphone of a portable communication device
Data Source
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AI summary
The invention relates to a method for supporting a driver of a motor vehicle (2) while driving the vehicle (2), wherein a sound signal indicating an information generated by a driver assistance system (3) of the vehicle (2) is output by a sound output device(7, 8) of the driver assistance system (3). The method comprises receiving acoustic sound by a microphone of a portable communication device (9) and checking by the portable communication device (9) whether or not the received acoustic sound comprises the sound signal of the driver assistance system (3) as well as, upon detecting the sound signal of the driver assistance system (3), generating a display (15) on a display means (14) of the portable communication device (9) in dependence on the information extracted from the sound signal.