公开(公告)号：US20180316584A1

公开(公告)日：2018-11-01

申请号：US16026040

申请日：2018-07-02

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： YOSHIHIRO UJIIE ,  TOMOYUKI HAGA ,  MANABU MAEDA ,  HIDEKI MATSUSHIMA ,  TAKESHI KISHIKAWA ,  JUNICHI TSURUMI ,  HISASHI KASHIMA ,  YUKINO TORIUMI ,  TAKUYA KUWAHARA

IPC: H04L12/26 ,  H04L12/40

CPC classification number: H04L12/28 ,  H04L12/40

Abstract: An abnormality detection method is provided. The abnormality detection method is for detecting an abnormality that may be transmitted to a bus in an on-board network system. The on-board network system includes a plurality of electronic controllers that transmit and receive messages via the bus in a vehicle according to a CAN protocol. In the abnormality detection method, for example, a gateway transmits vehicle identification information to a server and receives a response determining a unit time. An operation process is performed using feature information based on a number of messages received from the bus per the determined unit time and using a model indicating a criterion in terms of a message occurrence frequency. A judgment is made as to an abnormality according to a result of the operation process.