Driver Assistance Curve Warning Using Road Structure Data
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Drivers often fail to recognize sharp bends due to limited visibility, leading to potential safety risks as they may enter bends at excessively high speeds.
Innovation Solution
A control method and device for driver assistance that receives vehicle positioning information, obtains road structure data, and calculates a safe radius of curvature based on the road structure and minimum safe sight distance to determine if an alarm for a sharp bend is needed, using formulas such as Lmin=0.08*spd^2+0.8393*spd-6 and R=Lmin^2/22*W+W^2 to assess the risk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If drivers rely on self-observation in limited visibility scenarios, then driver autonomy is maintained, but safety risks increase due to erroneous determination of road conditions
Solution Approach 1:
The patent introduces road structure information (curvature radius, tangent length, sight distance) as an intermediary element that mediates between the driver's limited visual information and the actual road conditions. This intermediary data from mapping systems compensates for the driver's inability to see around bends, enabling safe driving decisions without requiring enhanced physical visibility.
2Productivity
If drivers enter bends at high speed, then productivity is maintained, but safety risks increase due to inability to recognize sharp bends
Solution Approach 1:
The patent performs preliminary calculation of safe bending speed before the vehicle enters the bend. By using road structure information (curvature radius R and tangent length L) to calculate the safe speed in advance according to the formula v=√(Rgμ), the system ensures that the driver can adjust speed appropriately before entering the bend, maintaining both productivity and safety.
3Reliability
If no alarm system is used, then device complexity is reduced, but safety risks increase due to lack of warning for sharp bends
Solution Approach 1:
The patent implements a feedback mechanism where the calculated safe bending speed is compared with the vehicle's actual speed. When the actual speed exceeds the safe speed, the system provides feedback through alarm signals (visual, auditory, or haptic) to warn the driver. This feedback loop ensures safety without requiring complex additional hardware, utilizing existing vehicle sensors and communication systems.
Data Source
AI summary
The disclosure relates to a control method for driver assistance. The method includes: receiving positioning information of a vehicle; obtaining information about a road structure ahead of the vehicle based on the positioning information; and determining, based on the information about the road structure, whether an alarm for a sharp bend is needed. The disclosure further relates to a control device for driver assistance, a computer storage medium, and a vehicle.