Vehicle Surroundings Recognition System Interference Handling
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Solution Overview
Problem
Existing vehicle environment detection systems, particularly those using ultrasonic sensors, fail to reliably detect objects due to interference from noise sources like motorcycles or trucks, leading to inaccurate distance and position calculations, which can result in missed collision warnings.
Innovation Solution
The system utilizes information from other vehicle systems, such as speed and steering angle signals, to determine the change in distance and position of objects relative to the vehicle, even when interference signals are present, by accessing the vehicle's bus system and combining this data with pre-interference distance information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ultrasonic sensors are used for object detection, then the system can detect objects in the surrounding area, but the sensors fail when interference signals from noise sources occur
Solution Approach 1:
The patent introduces an intermediary approach by using multiple sensor systems (camera, radar, lidar) in addition to ultrasonic sensors. When ultrasonic sensors are affected by interference, the system switches to or supplements with these intermediary sensor systems to maintain reliable object detection, thus resolving the contradiction between detection reliability and vulnerability to interference signals
Solution Approach 2:
The system dynamically changes the operational parameters by switching between different sensor modalities based on the detection environment. When interference is detected, the system changes from using ultrasonic sensors to using camera, radar, or lidar sensors, thereby maintaining reliable operation despite the harmful interference signals
2Productivity
If the system continues to process distance information during interference, then real-time detection is maintained, but the distance and position information becomes inaccurate
Solution Approach 1:
The system implements feedback mechanisms by continuously monitoring the quality of sensor signals and comparing them against threshold criteria. When interference is detected, the system receives feedback that triggers a switch to alternative sensor systems, allowing continuous detection while maintaining accuracy through adaptive sensor selection based on real-time signal quality assessment
Solution Approach 2:
The patent applies dynamics by making the sensor selection process adaptive and real-time. The system dynamically switches between ultrasonic, camera, radar, and lidar sensors based on the current detection environment and signal quality, enabling continuous operation that maintains both productivity and measurement precision through flexible, context-aware sensor switching
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 approach allows for continued accurate object detection and collision risk assessment, enabling timely warnings to the driver even in the presence of interference, ensuring reliable operation of the environment recognition system.
Implementation Method 1
The sensors used in such systems are typically based on ultrasonic or radar technology. Ultrasonic sensors, in particular, are prone to failure, particularly when background noise occurs.
Implementation Method 2
The sensors used in such systems are typically based on ultrasonic or radar technology.
Data Source
AI summary
The invention relates to a method for operating a vehicle's environment detection system, in particular a short-range detection or parking assistance system, with sensors for detecting objects in the vehicle's surroundings, wherein, during operation of the system, an object present in the sensors' detection range is detected and the distance and/or the object's relative position to the vehicle is determined. The invention is characterized in that, upon the occurrence and detection of interference signals, a change in the distance and/or the vehicle's relative position to the object is determined using information acquired by other vehicle systems. The invention also relates to a system for operating such a method.