Vehicle Sensor Fusion and Windshield Display for Driver Assistance
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Solution Overview
Problem
Existing driver assistance devices for vehicles face challenges in providing cost-effective, efficient, and non-overwhelming safety-critical information to drivers, particularly due to high-resolution sensors being costly and not achieving 1:1 congruence between camera images and the real world on windshields.
Innovation Solution
A driver assistance system utilizing two sensors with different resolutions, one for visible light and the other for infrared, allowing for more precise information gathering and display, with a display device projecting attentiveness information onto the windshield in a restrictedly contact-analogous fashion to minimize information overload and enhance safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If high-resolution sensors are used for sensing surroundings, then measurement precision is improved, but device cost increases significantly
Solution Approach 1:
The sensing system is segmented into multiple sensors with different resolutions and spectral sensitivities. One sensor captures visible light while another captures infrared radiation, allowing the system to gather comprehensive environmental information without requiring all sensors to be high-resolution, thus reducing overall system cost while maintaining effective detection capabilities.
2Manufacturing precision
If completely contact-analogous display is implemented on windshield, then information visualization accuracy is improved, but device complexity increases
Solution Approach 1:
Instead of implementing a complex completely contact-analogous display system that requires precise 1:1 mapping between camera images and windshield areas, the patent uses a simplified projection approach that achieves sufficient visualization accuracy with considerably lower system complexity and cost.
3Loss of information
If multiple sensors with different spectral ranges are used, then information completeness is improved, but information overload increases
Solution Approach 1:
The system extracts and displays only the most safety-critical information from the multiple sensor inputs. By selectively presenting essential data about detected objects and potential hazards rather than displaying all raw sensor information, the system maintains comprehensive situational awareness while preventing information overload that could distract or confuse the driver.
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 provides enhanced safety by offering a more comprehensive information basis, reducing information overload, and allowing for precise localization of critical information without diverting the driver's attention, while being cost-effective and easy to manufacture.
Implementation Method 1
the first sensor is provided for sensing in the range of visible light
Implementation Method 2
the second sensor is provided for sensing in the range of infrared light, preferably in the range of far infrared
Implementation Method 3
image data is projected onto a windshield which functions as a screen
Data Source
AI summary
The invention relates to a driver assistance device for a vehicle and a method for visualizing the environment of the vehicle. Said driver assistance device is associated with two sensors for detecting the environment of the vehicle. The sensors have a different resolution and/or the driver assistance device is associated with a display device. Said display device is arranged in the region of the front disk in order to restrict analogic contact on the display which represents attentiveness information.