Vehicle-mounted HD Map Intersection Passage Assistance
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Solution Overview
Problem
Drivers face challenges in accurately determining whether they have enough time to pass through an intersection, as existing vehicle-to-traffic light communication systems lack prompt information based on captured images and vehicle location.
Innovation Solution
A vehicle-mounted apparatus utilizing a high-definition map, GPS, camera, and sensors to determine if a vehicle can pass through an intersection by calculating speed and intersection information, and providing prompts or controls to the driver based on this analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If drivers rely on driving experience to estimate time for passing through intersections, then the system complexity remains low, but the measurement precision of time estimation deteriorates
Solution Approach 1:
The patent introduces an intermediary system consisting of communication devices, servers, and processing units that mediate between the traffic light status and the driver. This intermediary processes captured images, determines traffic light colors, calculates passage times, and provides prompts to drivers, thereby improving time estimation accuracy without requiring direct complex interactions between vehicles and traffic lights.
Solution Approach 2:
The patent replaces the mechanical/cognitive estimation process (drivers visually estimating time based on experience) with an electronic/image processing system. The system captures images of traffic lights, processes them through communication devices and servers, and provides precise time calculations, substituting human cognitive estimation with automated optical and computational systems.
2Reliability
If no prompt information is provided based on captured images and vehicle location, then the device complexity is low, but the reliability of intersection passage determination deteriorates
Solution Approach 1:
The patent implements a feedback mechanism where the system continuously monitors traffic light status through captured images, compares current status with calculated passage requirements, and provides real-time prompts to drivers. This feedback loop ensures reliable determination of whether vehicles can safely pass through intersections by continuously updating drivers with accurate time information.
Solution Approach 2:
The system performs preliminary determination of traffic light status and passage time before the vehicle reaches the intersection. By capturing images in advance, processing them through communication devices, and calculating passage times beforehand, the system provides timely information to drivers, enabling them to make informed decisions about whether to proceed through the intersection.
Data Source
AI summary
A method for providing driving assistance based on a HD map includes acquiring information such as position of a vehicle and timing, and acquiring a speed of the vehicle based on the manner of driving, and acquiring distance an intersection in front of the vehicle and information from a HD map such as traffic light intersection ahead. Deciding such as whether the vehicle can pass through the intersection based on the speed of the vehicle, intersection distance, and the traffic light information and prompting and/or controlling the vehicle if it is determined that passage through is not possible. A vehicle-mounted apparatus applying the method is also disclosed.