Review on Communication Technologies used in Electric Vehicles
S Prerana, Niranjan N Reddy, Susan G Varghese, N. S. Jayalakshmi · 2024
The automotive industry relies on wide range of networking protocols to facilitate effective communication and data exchange within vehicles. Local Interconnect Network (LIN) is a cost-effective protocol commonly utilized for non- critical tasks such as controlling interior lighting and transmitting basic sensor data. Similarly, Control Area Network (CAN) is a widely accepted protocol that enables high-speed real-time networking between electronic control units (ECUs), sensors, and actuators. CANopen is a protocol built after CAN, offers standardized communication profiles and advanced features to seamlessly integrate devices in embedded systems across various industries, including automotive. Time- Triggered CAN (TTCAN) enhances traditional CAN by incorporating time-triggered communication capabilities, ensuring deterministic behavior and predictable response times crucial for safety-critical applications. SAE J1939, which is based on CAN is commonly used in heavy-duty vehicles for standardized communication and diagnostics among different vehicle components. FlexRay, known for its high-speed and deterministic characteristics, is used in safety-critical automotive systems like active suspension and steer-by-wire applications, providing fault tolerance and advanced control functionalities. A comprehensive understanding of these automotive networking protocols is vital for establishing reliable and efficient communication networks that support a wide array of functionalities and safety features in modern vehicles.