Vehicle Switches Help The Rapid Development Of Intelligent Vehicles

Vehicle network is a very complex system, and there are multiple communication networks. Even common CAN buses can be divided into different speed CAN buses, such as engine control and transmission control of the power system. High speed 500K CAN bus control will be adopted, while comfort systems, such as doors, lights, and windows, will be controlled using 125K CAN bus. With the rapid development of processor computing power and hardware, the demand for new features such as ADAS, high-quality in-vehicle entertainment, and remote upgrades has led to an explosive growth in ECU network bandwidth requirements, and has also prompted vehicle switches (aslo can be called car switches or automobile switches) to become a member of the in-vehicle network.

The vehicle switch is the core of on-board Ethernet. In the electronic control units of these networks, vehicle switches play a crucial role, and their importance is gradually increasing, whether it is the currently few highly centralized architectures driven by high-performance computers, or the future more decentralized regional architectures.

Future application trends of vehicle switches:

1) Upgrade the on-board diagnostic system, especially for large data volume scanning and writing;

2) Intelligent driving, targeting the transmission of large data audio and video traffic from lidars and cameras;

3) Development of vehicle information and entertainment systems, especially for multi-screen interactive connection and hardware integration design of entertainment systems;

4) Integrated development of information interconnection systems, especially for scenarios involving different communication media such as wireless interconnection and V2X.

Main functions of vehicle switch:

1) Supports packet forwarding and conversion between multiple 100/1000BASE-T1 ports and between RJ45 ports;

2) Supports 802.1q (VLAN), 802.1Q in Q (Double VLAN)

3) Clock synchronization: Support EES as the 802.1AS (gPTP) master clock, or external master clock

4) External master clock supports 802.1AS (gPTP) and IEEE 1588 (PTPv2)

5) Support TSN protocols 802.1Qav, Qci, Qbv, and Qbu based on specific requirements;

6) The upper computer does not need to install additional software, and performs functional configuration through a web page; Including master/slave, enable/disable, port forwarding, mirroring, VLAN tags, etc. of the port;

7) Support remote command control (UDP Commands) for functional configuration;

8) Support sleep and wake-up; With LED status display lamp; Support dynamic and static configuration of MAC address forwarding lists;

9) Vehicle specification level connector ensures stable and reliable wiring harness connection on the platform and vehicle;


Take the example of Houshi IS6000-6218RE-2GF-4G Series Gigabit Managed Vehicle Switch, which is designed for industrial applications in harsh environments. IS6000-6218RE-2GF-4G series vehicle switches are tightly and securely connected through solid M12 connectors, ensuring stable operation of network equipment without worrying about problems caused by external environmental disturbances such as vibration and shock. This series of on-board Ethernet switches supports multiple Gigabit Ethernet M12 ports, IEEE802.3/802.3u/802/3x, 10/100/1000M, full/half duplex, MDI/MDI-X adaptive, providing an economical solution for industrial Ethernet communication.

This series of on-board Ethernet switches supports a wide temperature working environment of - 40 to 85 ° C. In addition, the IS6000-6218RE-2GF-4G industrial on-board Ethernet switch complies with the EN50155 standard and is suitable for rail vehicle applications, including operating temperature, power input voltage, surge, ESD, and vibration, making it suitable for various industrial applications.

Currently, on-board Ethernet is deeply affecting the overall system architecture of intelligent networked vehicles. As a leading industrial Ethernet solution provider in the industry, Houshi has independently developed a number of vehicle switches  (car switches or automobile switches) that provide high-speed and reliable data connection systems for vehicle Ethernet, contributing to the rapid development of intelligent networked vehicles.