| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an in-vehicle database system capable of grasping a system operating state and analyzing a cause to a fault or executing like processing by leaving a history of data recorded in a database and utilizing the history. <P>SOLUTION: The in-vehicle database system includes an in-vehicle LAN provided with: database distribution nodes each provided to each of a plurality of groups; one or more ECUs provided to each group; a transmission line for sequentially connecting the database distribution nodes, and each database distribution node is characterized in including: an ECU side transmission reception means for transmitting/receiving the data to/from the ECU in a group; a processing section including a database for recording received data from the ECU side transmission reception means and a distribution node side transmission reception means, and at least one of the database distribution nodes includes a log information recording means that records required recording data among the data recorded in the database as time series history information at a prescribed time interval. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
