COMMUNICATION SYSTEM, BUS LOAD MONITORING DEVICE, AND BUS LOAD MONITORING METHOD

摘要

An object of the present invention is to monitor the load of a bus (20) with high accuracy. A bus load monitoring device (10) includes a determination circuit that determines whether the bus load monitoring device (10) is in a bus-off state or a normal state, a first monitoring circuit that monitors the load of a bus when the bus load monitoring device (10) is in the normal state, a second monitoring circuit that monitors the load of the bus when the bus load monitoring device (10) is in the bus-off state, and a switching circuit that switches a monitoring circuit monitoring the load of the bus to the first monitoring circuit or the second monitoring circuit on the basis of the determination result of the determination circuit.