Vehicle Data Interaction Architecture for Real-Time i-VIL Testing
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Solution Overview
Problem
Intelligent vehicle-in-the-loop (i-VIL) systems face challenges in ensuring real-time and efficient data communication and interaction between test vehicles due to the complexity of integrated electronic systems, leading to poor full-vehicle performance and operation response during tests.
Innovation Solution
A vehicle data communication and interaction system is constructed using a first test vehicle on an environment perception platform and a second test vehicle on a rotating hub platform, equipped with intelligent-electronic control units (i-ECUs), vehicle control units (VCUs), engine control modules (ECMs), transmission control units (TCUs), electric power steering (EPS) systems, stabilization control systems (SCS), and network gateways, which form a vehicle controller local area network bus to facilitate efficient data transmission and interaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a complex integrated electronic system is used in intelligent test vehicles, then the functionality and capability of the vehicle are improved, but the real-time performance of data communication and interaction deteriorates
Solution Approach 1:
The patent segments the complex electronic control system into multiple independent ECUs (Engine Control Unit, Transmission Control Unit, Brake Control Unit, Steering Control Unit, etc.), each responsible for specific functions. This segmentation allows parallel data processing and communication across multiple units, improving real-time performance while maintaining comprehensive functionality.
Solution Approach 2:
The patent introduces a dedicated communication bus system as an intermediary between ECUs and the central controller. This communication bus acts as a mediator that enables high-speed, real-time data exchange between distributed control units, resolving the conflict between system complexity and real-time communication performance.
2Measurement precision
If multiple control units and sensors are integrated in test vehicles, then the test capability and data accuracy are improved, but the system complexity and communication overhead increase
Solution Approach 1:
The patent employs a universal communication bus protocol and standardized ECU interfaces that can handle multiple types of data (sensor readings, control signals, diagnostic information) through a single communication infrastructure. This multi-functionality reduces the need for separate communication channels for each sensor or control unit, thereby reducing overall system complexity while maintaining high data accuracy.
Solution Approach 2:
The patent optimizes communication parameters such as data transmission priority levels, sampling rates, and communication protocols based on the specific requirements of different sensors and control units. By dynamically adjusting these parameters, the system achieves high data accuracy for critical measurements while minimizing communication overhead and system complexity.
3Speed
If real-time data communication is implemented across all vehicle systems, then the operation response performance is improved, but the communication load and processing time increase
Solution Approach 1:
The patent implements periodic data sampling and communication cycles with different priorities for different vehicle systems. Critical systems (braking, steering) use high-frequency periodic communication, while less critical systems use lower-frequency updates. This periodic action with varying frequencies reduces overall communication load and processing time while maintaining fast response for critical operations.
Solution Approach 2:
The patent incorporates feedback mechanisms where the central controller monitors communication load and system performance in real-time, then dynamically adjusts communication frequencies and priorities. This feedback control ensures that critical operations maintain fast response times while non-critical communications are throttled during high-load periods, optimizing the balance between response speed and processing time.
Data Source
AI summary
The present invention relates to a vehicle data communication and interaction system and a construction method thereof. The system includes a first test vehicle placed in an environment perception test platform and a second test vehicle placed in a rotating hub test platform, an intelligent-electronic control unit (i-ECU), a vehicle control unit (VCU), and a vehicle bottom electronic control unit that are communicatively connected with each other are mounted on each of the first test vehicle and the second test vehicle, and a sensor is further mounted on the first test vehicle. The first test vehicle is communicatively connected to the second test vehicle, and specifically, the VCU or a network gateway is connected via the sensor, to implement a communication connection between the two test vehicles.