Subsurface Vehicle Communication via Road Waveguide
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Solution Overview
Problem
Existing vehicle-to-vehicle communication systems face challenges in maintaining a precise and reliable minimum distance between vehicles, especially in autonomous driving scenarios, due to limited information about adjacent road users' future movement behavior, leading to increased safety distances and reduced traffic efficiency.
Innovation Solution
A communication arrangement with dedicated vehicle-to-vehicle communication apparatuses that transmit vehicle parameters wirelessly via a transmission path beneath the vehicles, utilizing a waveguide principle to ensure reliable and interference-free signal transmission, allowing for precise coordination and movement behavior monitoring between vehicles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional vehicle-to-vehicle communication systems are used, then vehicles can exchange basic information, but the signal transmission is unreliable and prone to interference, leading to increased safety distances
Solution Approach 1:
The patent transitions communication from traditional aerial radio wave transmission to subsurface electromagnetic wave transmission through the road. By changing the transmission dimension from air-to-air to ground-coupled, the system achieves more reliable signal transmission with less interference, enabling shorter safety distances between vehicles while maintaining communication reliability.
Solution Approach 2:
The road infrastructure serves as an intermediary medium for signal transmission. Instead of direct vehicle-to-vehicle radio communication, the system uses the road as a conducting medium to transmit electromagnetic signals between vehicles, improving reliability by utilizing the stable and controlled electromagnetic environment of the subsurface.
2Reliability
If larger safety distances are maintained between vehicles, then collision risk is reduced, but traffic flow efficiency decreases
Solution Approach 1:
The system implements continuous real-time monitoring and communication between vehicles through the subsurface transmission path. This feedback mechanism allows vehicles to dynamically adjust their spacing based on actual conditions, maintaining short distances while ensuring collision avoidance through constant information exchange about position, speed, and intended maneuvers.
Solution Approach 2:
The system enables vehicles to receive advance information about the behavior and intentions of adjacent vehicles through continuous subsurface communication. This preliminary information allows vehicles to take preventive actions before potential conflicts arise, maintaining shorter safety distances while preserving collision avoidance capability.
3Measurement precision
If precise movement determination between vehicles is achieved, then vehicle spacing control is improved, but the complexity of the communication system increases
Solution Approach 1:
The subsurface electromagnetic transmission system serves multiple functions simultaneously: it enables communication between vehicles, provides precise distance measurement through signal propagation characteristics, and offers collision avoidance capabilities. This multi-functionality reduces the need for separate dedicated systems for each function, thereby limiting the increase in overall system complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enables vehicles to maintain a consistently short and safe distance, reducing energy consumption and the likelihood of collisions, while improving traffic flow and allowing for more precise control of vehicle spacing, even at high speeds.
Implementation Method 1
The signal is transmitted via a transmission path between the first and the second communication apparatus, wherein a main transmission link of the transmission path runs beneath the first and/or second vehicle
Data Source
AI summary
A method for communication between and/or determination of the movement of at least two vehicles 2a, b, c travelling in succession by means of a communication arrangement 4, wherein the communication arrangement 4 has at least one first communication apparatus 3a for arrangement on a first vehicle 2a and at least one second communication apparatus 3b for arrangement on a second vehicle 2b, is proposed, in which a signal is transmitted via a transmission path between the communication apparatuses 3a, b, c, wherein a main transmission link H of the transmission path runs at least beneath the first and/or second vehicle 2a, b and/or in which the determination of movement is carried out on the basis of the propagation time and/or propagation time differences.