In-vehicle communication system, in-vehicle relay device and in-vehicle control device

摘要

PROBLEM TO BE SOLVED: To provide an in-vehicle communication system, an in-vehicle relay device and an in-vehicle control device for improving communication reliability. A first relay device is mounted in a first area of a vehicle, and a second relay device is mounted in a second area. The first relay device and the second relay device are connected via a communication trunk line across the first area and the second area. The main control device and the auxiliary control device are mounted in the first area and are connected to the first relay device via a communication branch line. The controlled device is mounted in the second area and is connected to the second relay device via a communication branch line. The first input device is mounted in the first area and inputs information to the main control device or the auxiliary control device. The second input device is mounted in the second area, is connected to the second relay device via a communication branch line, and inputs information to the main control device or the auxiliary control device via the first relay device and the second relay device. .. The first relay device and the controlled device communicate with each other via an auxiliary communication line provided across the first area and the second area. [Selection diagram] Fig. 1