Automated Lane Keeping With Asymmetric Sensor Processing
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Solution Overview
Problem
Existing automated lane keeping systems require extensive computational resources due to redundant sensor data processing, leading to high costs.
Innovation Solution
An automated lane keeping system with asymmetric mode operation, utilizing first and second processors to process sensor data from different sides and front of the vehicle, optimizing computational resource use by reallocating resources for redundant calculations without increasing overall demand.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If symmetric dual-processor architecture is used for automated lane keeping, then system reliability is improved through redundant calculations, but computational resource consumption increases
Solution Approach 1:
The patent applies asymmetry by implementing an asymmetric data processing architecture where the first processor handles sensor data from both the first and second environmental sensors, while the second processor only handles data from the second environmental sensor. This asymmetric allocation eliminates redundant calculations for the first sensor's data while maintaining safety through selective redundancy, thereby reducing overall computational resource consumption while preserving system reliability.
2Reliability
If redundant sensor data processing is implemented, then safety of automated lane keeping decisions is improved, but system cost increases due to high computational power requirements
Solution Approach 1:
The patent extracts and eliminates unnecessary redundant processing from the system. By analyzing the actual safety requirements, it removes the redundant processing path for the first environmental sensor's data, keeping only the essential redundancy for the second sensor's data. This extraction of excessive complexity reduces computational power requirements and thereby reduces system cost while maintaining adequate safety.
3Reliability
If both processors process all sensor data, then processing reliability is improved, but processing efficiency decreases due to redundant calculations
Solution Approach 1:
The patent applies partial action by implementing selective redundancy - the first processor processes data from both first and second environmental sensors, while the second processor only processes data from the second environmental sensor. This partial redundancy approach maintains processing reliability for critical data while avoiding excessive redundant calculations, thereby improving overall processing efficiency without sacrificing reliability.
Data Source
AI summary
An automated lane keeping system for a vehicle, including first, second, and third environmental sensors; a processing unit including first and second processors each of which is electrically connected to the first to third environmental sensors; and a control unit configured to: determine an availability condition for an asymmetric mode of an automated lane keeping function is met; if it is determined that the availability condition for the asymmetric mode is met, control the sensor unit and the processing unit to switch the automated lane keeping function to the asymmetric mode from a default mode. In the default mode, the second processor receives and processes the first sensor data, while the first processor receives and processes the second and third sensor data; in the asymmetric mode, the first and second processors respectively receive and process the second and third sensor data.