Dual CAN and Ethernet BUS Interface for Towing Vehicle Data Transmission
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Solution Overview
Problem
Current CAN BUS-based data systems for towing and trailer vehicles face limitations in data transmission rates and real-time data processing, particularly in advanced driver assistance systems and automated driving applications, where higher data volumes and speeds are required, leading to bottlenecks and inefficiencies.
Innovation Solution
Integration of an ETHERNET BUS system alongside the existing CAN BUS, with an intelligent switch that coordinates demand-based data transmission between towing and trailer vehicles, enabling higher data transmission rates and maintaining compatibility with ISO 11992 standards through a twisted-pair cable connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If CAN BUS is used for data transmission between towing and trailer vehicles, then compatibility with existing standards (ISO 11992) is maintained, but data transmission rate and real-time processing capability are limited
Solution Approach 1:
The patent segments the data transmission system into two distinct BUS systems: CAN BUS for maintaining compatibility with existing standards and ETHERNET BUS for high-speed data transmission. This segmentation allows each BUS system to operate independently with optimized characteristics, resolving the contradiction between maintaining standard compatibility and achieving high transmission speeds.
Solution Approach 2:
The interface device is designed with multi-functionality, supporting both CAN BUS and ETHERNET BUS protocols. This universal interface can adaptively select and switch between different BUS systems based on data transmission requirements, enabling the system to maintain compatibility with existing standards while simultaneously achieving high-speed data transmission for advanced driver assistance systems.
2Productivity
If ETHERNET BUS is integrated for high-speed data transmission, then data transmission capacity increases, but system complexity and compatibility with existing standards may be affected
Solution Approach 1:
The patent merges CAN BUS and ETHERNET BUS systems into a unified data transmission architecture through an intelligent interface device. This interface device consolidates multiple BUS protocols and communication paths into a single coordination point, managing the complexity of having dual BUS systems while enabling high-speed data transmission for sensor data, multimedia, LIDAR, and RADAR applications.
Solution Approach 2:
The interface device acts as an intermediary between the CAN BUS and ETHERNET BUS systems, translating and coordinating data transmission between these two different protocols. This mediator manages the complexity by providing a standardized interface that handles protocol conversion, data routing, and synchronization, thereby enabling high data transmission capacity without overwhelming system complexity.
3Loss of time
If intelligent switch is used for demand-based coupling, then real-time data processing improves, but device complexity increases
Solution Approach 1:
The interface device incorporates dynamic switching capabilities that adaptively couple or decouple the towing and trailer vehicle data systems based on real-time data transmission demands. This dynamic behavior allows the system to optimize real-time data processing by activating high-speed ETHERNET BUS connections only when necessary for advanced driver assistance systems, while maintaining lower-complexity CAN BUS operation during normal conditions.
Data Source
AI summary
A data system of a towing vehicle and/or trailer vehicle includes a control device, a sensor system configured to record and process sensor data, and a BUS system configured to transfer the sensor data between the control device and the sensor system. The BUS system has a first BUS device in the form of a CAN BUS and a second BUS device in the form of an ETHERNET BUS, and the BUS system further has a first interface configured to transfer the sensor data to a second interface of a second BUS system of a second data system of a second towing vehicle and/or trailer vehicle. The data system additionally includes an intelligent switch, coupled to the control device and/or to the first interface, the intelligent switch being configured to couple the first towing vehicle and/or trailer vehicle to the second towing vehicle and/or trailer vehicle in a coordinated manner.