Vehicle Control Device Adapting Radar and Camera Parameters
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle driver assistance systems face challenges in accurately detecting the environment, particularly in tunnels and dark conditions, due to radar sensor limitations and camera blinding, leading to potential false detections and reduced performance.
Innovation Solution
A control device with location-dependent and time-dependent operating parameters for environment sensors, such as radar and camera systems, which adapt signal processing algorithms and exposure settings based on the vehicle's position and environmental conditions to enhance detection accuracy and reduce false positives.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If radar sensor is used for environment detection, then detection range is extended, but false detections increase in tunnel environments due to echo signals from roof and walls
Solution Approach 1:
The patent changes the operating parameters of the radar sensor based on location information. When approaching a tunnel, the system adjusts radar parameters (such as transmission power, pulse width, or detection thresholds) to differentiate between echo signals from tunnel structures and actual objects, thereby reducing false detections while maintaining detection accuracy.
Solution Approach 2:
The system performs preliminary actions by retrieving location-dependent operating parameters before entering a tunnel environment. Using map data and current position, the control device pre-adjusts radar parameters to anticipate and compensate for echo signal interference, preventing false detections before they occur.
2Loss of information
If camera is used for environment detection, then visual information is obtained, but detection quality deteriorates when entering or leaving tunnels due to darkness and blinding
Solution Approach 1:
The patent adjusts camera operating parameters (such as exposure time, gain, or ISO sensitivity) based on location-dependent conditions. When approaching or exiting a tunnel, the system pre-adjusts these parameters to compensate for rapid light changes, maintaining visual information quality and preventing detection degradation.
Solution Approach 2:
The system applies preliminary anti-action by anticipating light condition changes when approaching tunnels. The control device retrieves location data and proactively adjusts camera parameters to counteract the harmful effects of darkness or sudden brightness changes, preventing detection quality deterioration before it occurs.
3Extent of automation
If driver assistance system takes full control, then autonomous guidance is achieved, but driver situation awareness decreases
Solution Approach 1:
The patent implements feedback mechanisms where the driver assistance system continuously provides information about detected objects, environmental conditions, and system status to the driver. This maintains driver situation awareness even when the system operates autonomously, allowing the driver to understand the vehicle's environment and intervene if necessary.
Data Source
AI summary
A control device for a vehicle, with at least one environment sensor which is designed to detect the surroundings of the vehicle, with a computing device which is designed to detect the position of the vehicle and to operate the environment sensor on the basis of corresponding location-dependent operating parameters.