| 摘要 |
PROBLEM TO BE SOLVED: To specify a power consumption factor of a battery and prevent battery exhaustion before occurrence.SOLUTION: A central G/W (Gate Way) 1 acquires node information related to each of ECUs 41 to 44 through an in-vehicle network, and time sequentially stores it into a memory bank. The node information includes information indicating an activation factor when the ECU starts, and a time stamp. The central G/W 1 monitors the state of a battery, and if detecting an abnormality of the battery state, the central G/W 1 notifies information related to the time sequential node information stored in the memory bank to an external object (such as a user or a center server). |
