Toyota Jidosha Kabushiki Kaisha

Denso Corporation

Ryo Ito

Masanao Idogawa

Noritake Mitsutani

Katsumi Kono

Tetsuya Taira

Yoshihisa Yamada

Kaiji Itabashi

Hiroyuki Hirano

Takahiro Shidai

Seiji Miyamoto

Hiroki Nakano

Waka Noda

Yohsuke Satoh

Shunsuke Fujishima

Takashi Yanai

An electronic control unit is incorporated as one of a plurality of electronic controllers composing a system for controlling in-vehicle devices on a distributed and mutually-synchronized control manner in a vehicle. The plurality of electronic control units are communicably connected with each other via an in-vehicle network to communicate information including the time-dependent data among the electronic control units. Each electronic control unit comprises a control member, an elapsed-time calculation component, and a validity determination component. The control member performs the control on the basis of time-dependent data acquired in time series relating to the vehicle. The elapsed-time calculation component is configured to calculate an elapsed time elapsing from acquisition of the time-dependent data. The validity determination component is configured to use the calculated elapsed time to determine whether or not the time-dependent data is valid or not for the control in terms of freshness of the time-dependent data.

Electronic control units for controlling in-vehicle devices using time-dependent data and vehicle control system integrating such units for real-time distributed control

A method and device for managing a task upraised according to receiving a processing request of services in in-vehicle electronic control units are provided. The method and device include the steps of: allocating a plurality of services to one task and determining whether or not the task assigned with the service is in process of execution in receiving the processing request of the service; and upraising the task to process the service of the received processing request when determination is made that the task is not in process of execution in the determining step, and making the task in process of execution continuously process the service of the received processing request without newly upraising the task when determination is made that the task is in process of execution in the determining step.

Method and device for managing tasks of in-vehicle electronic control unit

A vehicle control system is configured by basic control units of a power train control unit, a steering control unit and a brake control unit that are arranged in a lower control hierarchy level, a vehicle motion control manager unit that is arranged in a middle control hierarchy level, and a driving support control unit that is arranged in an upper control hierarchy level. The basic control units transmits input data to vehicle motion control manager unit of middle control hierarchy level and/or driving support control unit of upper control hierarchy level, and receives a calculation result of the input data substituted into a predetermined calculation formula at vehicle motion control manager unit and/or driving support control unit. If the input data and the calculation result data are not consistent, it determines that there is a failure in vehicle motion control manager unit and/or driving support control unit.

Failure sensing device of vehicle control system

A data storage device executes a program including the steps of: determining whether or not a storage instruction to include data to be stored, along with a class generated as a label common among application software, has been obtained; detecting a class in the contents of the storage instruction when the storage instruction is obtained; determining a storage manner based on the class and a table defining in advance storage manners; and storing data in an appropriate storage medium with appropriate data redundancy based on the determined storage manner.

Data processing device in vehicle control system

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Toyota, Japan

Ryo Ito