Passive Wireless Lane Departure Apparatus for Mixed Traffic
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Solution Overview
Problem
Lane departure for autonomous vehicles in mixed environments, particularly with the presence of both autonomous and non-autonomous vehicles, is challenging due to the reliance on cameras and sensors that can be hindered by weather conditions and infrastructure power outages, leading to instability in vehicle operation.
Innovation Solution
The implementation of passive wireless communication devices powered by vehicles, which establish a secure communication channel to exchange information on vehicle position, speed, and braking distance, allowing for secure and reliable operation even in adverse conditions, using DICE-RIoT methodology for authentication and encryption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cameras and sensors are used to obtain information about surroundings, then autonomous vehicles can control speed and direction and recognize obstacles, but vehicle operation becomes unstable under adverse weather conditions and infrastructure power outages
Solution Approach 1:
The patent introduces wireless communication devices as an intermediary system that operates independently of traditional camera and sensor infrastructure. These devices receive information from infrastructure elements (like traffic lights and road signs) via wireless signals, allowing vehicles to obtain environmental information without relying on optical sensors that fail in adverse weather or when infrastructure power is lost.
Solution Approach 2:
The system changes the operational parameters of information acquisition by shifting from optical/electronic sensing (cameras and sensors requiring power and clear conditions) to wireless signal reception that can operate independently of weather conditions and infrastructure power status, thereby improving reliability under adverse conditions.
2Reliability
If passive wireless communication devices are used for information exchange, then redundancy is provided and operation remains reliable under adverse conditions, but device complexity increases
Solution Approach 1:
The wireless communication devices serve multiple functions: they receive information from infrastructure elements, transmit vehicle status information, and enable authentication and encryption. This multi-functionality reduces the need for separate specialized components, thereby managing complexity while providing redundancy and improved reliability.
Solution Approach 2:
The passive wireless communication devices are powered by the vehicles themselves rather than requiring external power infrastructure. This self-service approach eliminates dependency on infrastructure power and reduces system complexity by removing external power requirements while maintaining operational reliability.
3Reliability
If secure communication channels with authentication and encryption are implemented, then safe lane departure is ensured, but communication protocol complexity increases
Solution Approach 1:
Authentication and encryption protocols are established in advance before critical operations like lane departure. The system performs preliminary authentication of communication partners and sets up encrypted channels beforehand, ensuring security is already in place when safety-critical decisions are made, thereby reducing real-time complexity during actual lane departure operations.
Data Source
AI summary
A method and apparatus according to the invention can include energizing a wireless communication device coupled to a processor of a vehicular entity thus establishing a secure channel or communication area around the vehicular entity;exchanging information and data with other vehicular entities entering the established channel or communication area;regulating some vehicle parameters of said vehicular entity for driving the departure and/or travelling of the vehicular entity according to the received information and data.