Autonomous Driving Controller for Longitudinal Lateral System Switching
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing autonomous driving systems face challenges in safely coexisting and switching between longitudinal and lateral controlling systems, leading to potential vehicle instability and accidents when multiple systems are installed, as they lack a conversion mechanism to manage transitions between them.
Innovation Solution
A composite autonomous driving assistant system that includes a longitudinal-controlling device, a lateral-controlling device, and a sensing system to generate signals for a controller, which determines when to shut down or start each system based on vehicle and environmental states, using speed, distance, and turn angle signals to prevent collisions and maintain vehicle control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple autonomous assistant systems are installed on the vehicle, then the autonomous driving functionality is enhanced, but the system complexity and potential for dangerous interactions increase
Solution Approach 1:
The patent introduces a controller as an intermediary component that manages the interaction between the longitudinal-controlling autonomous assistant system and the lateral-controlling autonomous assistant system. The controller receives signals from both systems and determines whether to allow them to operate simultaneously based on predefined conditions, thereby mediating their interaction to prevent dangerous situations while maintaining the functionality of both systems
2Adaptability or versatility
If the longitudinal-controlling autonomous assistant system and lateral-controlling autonomous assistant system operate simultaneously, then the autonomous driving capability is improved, but the risk of vehicle instability and accidents increases
Solution Approach 1:
The patent implements a feedback mechanism where the longitudinal-controlling autonomous assistant system monitors the operating state of the lateral-controlling autonomous assistant system and vice versa. When one system detects that the other system is operating, it sends a stop instruction to prevent simultaneous operation, thereby maintaining vehicle stability while preserving autonomous driving capability through coordinated feedback
Data Source
AI summary
A composite autonomous driving assistant system for making decision and a method of using the same is provided. A longitudinal-controlling autonomous driving assistant device and a lateral-controlling autonomous driving assistant device start to automatically assist in driving a vehicle. Then, a sensing device senses states of the vehicle and an environment and generates one sensing signal. When a controller determines that the collision period is less than a preset collision period and that a deceleration signal of the sensing signal is larger than a preset deceleration, the controller generates a turn-stopping signal. When the controller determines that a turn angle signal of the sensing signal is larger than a preset angle, the controller generates a speed-stopping signal. The system establishes a switching threshold condition when the plurality autonomous driving assistant devices coexist.