Patent ID: 11971982
Assignee: DENSO CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 11:
12. A log analysis device comprising:
a receiver unit that receives a plurality of logs from an electronic control system mounted in a movable object, each log indicating status of the electronic control system mounted in the movable object;
a log analyzer unit that analyzes an abnormality in the electronic control system by using the plurality of logs received by the receiver unit;
a priority determiner unit that, depending on a result of the analyzing of the plurality of logs by the log analyzer unit, determines, on a log-by-log basis, a priority of each subsequent log of a plurality of subsequent logs for the electronic control system to transmit to the log analysis device;
an instruction generator unit that generates instruction information that provides an instruction for, based on the result of the analyzing of the plurality of logs by the log analyzer unit and based on the priority determined by the priority determiner unit, controlling transmission of each subsequent log; and
a transmitter unit that transmits the instruction information generated by the instruction generator unit to the electronic control system;
wherein:
the log analysis device is provided outside of the movable object and wirelessly communicates with the electronic control system of the movable object;
the plurality of logs and the plurality of subsequent logs each include a log recording a dynamic status that is constantly changing in relation to the electronic control system and a log recording a static status that is unchanging in relation to the electronic control system;
the log analyzer unit, the priority determiner unit, and the instruction generator unit are implemented by a processor and memory storing instructions that are executable by the processor;
the priority determiner unit determines a power supply status of the movable object as one of: the power supply status of the movable object is in an OFF state; an accessory power supply of the movable object is in an ON state; and an ignition power supply of the movable object is in an ON state; and
the priority determiner unit determines the priority of each subsequent log of the plurality of subsequent logs according to a power supply status of an electronic control unit changing in accordance with a change in the determined power supply status of the movable object.