Vehicle Server Interface Road Profile Transmission
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Solution Overview
Problem
Current vehicle systems face challenges in efficiently transmitting and processing large amounts of data, particularly road condition information, to support predictive chassis systems and ensure safe and comfortable driving, especially in areas with weak data connections.
Innovation Solution
A method and system for transmitting a road height profile from a server to a vehicle, where height values are sent cyclically at speed-dependent intervals, allowing the vehicle's control unit to adapt its chassis for optimal ground contact and stability, using a vehicle-server interface to manage data efficiently even in low-bandwidth conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If large amounts of road condition data are transmitted from server to vehicle, then predictive chassis system accuracy is improved, but data transmission requirements and network bandwidth are increased
Solution Approach 1:
The road height profile data is segmented into discrete height values transmitted at specific spatial intervals (e.g., 10 meters) rather than continuous data streams. This segmentation reduces overall data volume while maintaining sufficient accuracy for predictive chassis control at different vehicle speeds.
Solution Approach 2:
The system transmits only the necessary portion of road profile data (height values at specific intervals) rather than complete road condition information. This partial action approach provides sufficient data for predictive chassis operation without transmitting excessive information that would consume network bandwidth.
2Reliability
If high-resolution road profile data is transmitted, then chassis prediction accuracy is improved, but data transmission time and bandwidth consumption are increased
Solution Approach 1:
The system changes the parameter of data resolution by transmitting height values at fixed spatial intervals (e.g., every 10 meters) rather than high-resolution continuous profiles. This parameter adjustment maintains reliability for predictive chassis control while significantly reducing data transmission time and bandwidth requirements.
3Productivity
If continuous road profile data transmission is implemented, then predictive chassis system performance is improved, but network bandwidth consumption and data processing load are increased
Solution Approach 1:
Instead of continuous data transmission, the system implements periodic action by transmitting height values at fixed spatial intervals (e.g., every 10 meters along the road profile). This periodic transmission maintains predictive chassis system performance while dramatically reducing network bandwidth consumption compared to continuous streams.
4Adaptability or versatility
If speed-dependent data transmission intervals are used, then data efficiency is improved, but system complexity is increased
Solution Approach 1:
The system implements dynamics by adjusting data transmission intervals based on vehicle speed. At higher speeds, shorter intervals (e.g., 10 meters) provide more frequent updates for accurate prediction, while at lower speeds, longer intervals suffice. This dynamic adaptation improves data transmission efficiency across varying operating conditions.
Solution Approach 2:
The transmission control unit changes the parameter of spatial interval between transmitted height values based on detected vehicle speed. This parameter adjustment optimizes the balance between data transmission efficiency and system complexity, providing adaptability without requiring overly complex control mechanisms.
Data Source
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AI summary
The invention relates to a method for transmitting information between a vehicle (10) and a vehicle-external server (20), in which a contour profile (14), stored on the server (20), of a road to be travelled along by the vehicle (10) is retrieved by the vehicle (10) via a vehicle-server interface (12), wherein contour values (H, G) of the road-surface contour profile (14) lying ahead of the vehicle (10) are transmitted cyclically from the server (20) to the vehicle (10) at a time interval (13, 15) which is to be defined, wherein one contour value (H, G) is transmitted per cycle, said contour value (H, G) lying at a speed-dependent distance (13, 15) ahead of the vehicle (10). Furthermore, the invention relates to a chassis system (30) for carrying out the method according to the invention, and to a vehicle (10) having a chassis system (30) according to the invention.