Comparative advantages of J1939 cable compared to other common cables

Comparative advantages of J1939 cable compared to other common cables

Compared to ordinary power cables, the mission of J1939 cables is completely different. Ordinary power cables are mainly responsible for transmitting electrical energy and have high requirements for insulation performance and current carrying capacity to ensure stable power supply. J1939 cable focuses on data communication, ensuring high-speed and accurate data transmission in complex environments such as vehicles and ships. Its shielding design is extremely precise and can effectively resist electromagnetic interference, which ordinary power cables do not have, after all, the sensitivity of power transmission to electromagnetic interference is much lower than that of data communication.

The commonly used RS-485 cable in the industrial field, although also used for data transmission, has differences in transmission speed and application scenarios compared to J1939 cable. RS-485 cables generally have relatively low transmission rates and are commonly used for connecting equipment with short distances and small data volumes in industrial automation. J1939 cable, with a transmission rate of 250kbit/s or even higher, excels in transmitting a large amount of key information such as engine operating parameters and vehicle diagnostic data between complex systems of large equipment such as heavy vehicles and construction machinery.

Low voltage wire harnesses are widely present in the internal wiring of automobiles, but they are mainly used to connect various low-voltage devices inside the car and achieve simple electrical control. J1939 cable is a high-speed communication network between vehicle electronic control units, with more complex and high-end transmission functions and technical requirements. It is the core supporting cable for the development of vehicle intelligence and automation, and plays its own role in its respective fields, together with other common cables, to build the operational foundation of modern equipment and systems.