Nippondenso Co., Ltd.

Denso Corporation

Toyota Jidosha Kabushiki Kaisha

Toyota Jidosha Kogyo Kabushiki Kaisha

Nippondenco Co., Ltd.

Susumu Akiyama

Katsunori Ito

Yuji Hirabayashi

Masumi Kinugawa

Yoshihisa Sato

Tiaki Mizuno

Toshitaka Yamada

Katsuhiro Ina

Norio Omori

Kenzo Ito

Hiroyasu Fukaya

Atsushi Suzuki

Takao Saito

Tomoaki Abe

Takahide Kawamura

Yuzi Hirabayashi

Haruhiko Ogiso

Masakazu Ninomiya

Tetsuo Tanigawa

Satoshi Hirano

Tsutomu Tashiro

Masahiro Ohba

Kazuaki Minami

Naoto Ooka

Hidemichi Tanabe

Yuuji Hirabayashi

Hideya Fujisawa

Naoki Maeda

Kazushi Akutsu

Takayuki Toya

Kengo Sugiura

Kiyohumi Kage

Ito Katsunori

Yugi Hirabayashi

Katsonori Ito

Toshi Suda

A method of preparing a vehicle control system having an intended function by using at least two ECUs is provided. One of the at least two ECUs is used for adaptively incorporating a modified portion of the intended function of the vehicle control system through re-design in a short period, while the rest of the ECUs in the vehicle control system sustain and support an unchanging portion of the intended function of the vehicle control system.

Method for providing control system of vehicle, electric control unit and headlight control system

Method for providing control system of vehicle

An integrated vehicle control system includes various functionalized networks, such as power train group, vehicle motion group, and power source group, each including a plurality of ECUs connected via an individual communication line. A managing ECU in each network determines operation directives to be supplied to individual ECUs belonging to its own network based on information obtained from these individual ECUs as well as information obtained from other ECUs of different networks via a host communication line L. The determined operation directives are transmitted to corresponding ECUs to cause respective individual ECUs to operate subordinately according to the given operation directives, thereby realizing a collective control of specific functions. The managing ECU also executes abnormality detection processing for detecting abnormality occurring in the integrated vehicle control system.

Integrated vehicle control system

A vehicle LAN is formed of networks of ECUs with each network controlling a specific basic system of the vehicle such as the power train, and each network including a supervisory ECU with the supervisory ECUs able to mutually communicate via a high-level communication line. Each supervisory ECU coordinates the control operations of its own network, based on status information from that network and on control requests transmitted from other networks, so that only small amounts of data need be transferred within the system.

Vehicle data communication system having supervised coordination of networks which control respective basic operating functions of vehicle

A vehicle agent system controls operation of relevant in-vehicle devices as execution of a practical response for acting for a driver. When a command is inputted by the driver or a notification is inputted from an in-vehicle network, an assumed response is selected from driver information stored in a RAM, based on the command or the notification. The selected assumed response including parameters is presented to the driver. When the driver inputs a command for permitting the selected assumed response or the driver inputs no command for a predetermined period, the selected assumed response is determined to be the practice response. When the driver inputs modification, the selected assumed response is modified into the practical response.

Vehicle agent system acting for driver in controlling in-vehicle devices

A power supply integrated circuit is provided which makes it possible to make an on-vehicle apparatus compact and to allow power supply cable communication having resistance to noise. The power supply integrated circuit is connected to a micro-controller incorporated in an ECU and a power supply cable. The power supply integrated circuit has an LPF and a regulator. The power supply integrated circuit also has an interface circuit, a BPF, a transmitting section, and a receiving section. The LPF passes only the power supply voltage, and the BPF passes only transmission signal.

Power supply integrated circuit having communication function

A gateway ECU identifies a requested ECU from a plurality of ECUs through a LAN based on an access request of an external device for requesting access to the requested ECU and determines whether the external device has been authorized to access the ECUs based on first authentication information of the external device. Furthermore, the gateway ECU determines whether a trouble of the vehicle currently exists based on data transmitted from each ECU through the LAN. If the trouble exists, the gateway identifies a failed part, which causes the current trouble in the vehicle, based on information transmitted from each corresponding ECU by executing a detection and diagnostic program obtained from a customer server.

Vehicular relay device, in-vehicle communication system, failure diagnostic system, vehicle management device, server device and detection and diagnostic program

A vehicular communication system communicates information among a plurality of ECUs installed in a vehicle. The communication system includes a plurality of transceiver circuits for communicating information, and each transceiver circuit is provided in an associated one of the ECUs. The transceiver circuits are divided into groups of transceiver circuits. Each transceiver circuit of a given group communicates with the transceiver circuits of the same group using one of a predetermined communication frequency and a predetermined code, which is allocated to the given group and is different from that of any other group.

Vehicular communication system for communicating information among electronic devices installed in vehicle

A communication system includes a plurality of separate transmission units. A common signal line connects the units. A token is transferred from a first of the units to a second of the units during one sequence. The token is a right to output data to the common signal line. When the token is rejected by the second unit, the token is retransferred from the first unit at maximum a predetermined number of times during that sequence to the second unit. When the retransferred token is rejected by the second unit, the token may be transferred from the first unit to a third of the units during that sequence. In a next sequence, said predetermined maximum number of times said token is retransmitted to said second unit is then reduced.

Communication system

A plurality of control units are connected via a common signal line through which they communicate. Each control unit is operative to control an apparatus according to certain information the control unit normally receives directly through an exclusive signal line by operation of a directly-inputting device. A check is made to determine whether the directly-inputting device is operating normally. If not, then the required information is inputted from its source indirectly through another control unit by way of the common signal line.

Communication control system

Control units are mutually connected by separate common signal lines. A data link is provided between the control units via a preselected one of the common signal lines. A check is made as to whether the preselected common signal line is operating normally or abnormally. When the preselected common signal line is operating abnormally, the preselected common signal line is replaced by another common signal line in the data link.

A plurality of control systems mounted on a vehicle such as an automobile, and provided for different controlled objects are respectively made of control computers. These control computers are linked by a common data bus. These computers exclusively execute, for example, an engine control, a transmission control, a brake control, a suspension control, and a auto drive control. The data bus is further connected to a diagnosis computer. Each control computer detects a signal from the sensor provided corresponding to each controlled object, and outputs the detect signal to the data bus. Each control computer executes the logical operation for its control on the basis of its detect signal and various data transferred to the data bus. The diagnosis computer supervises an operating state of each control system on the basis of the data transferred to the data bus. When an abnormality is detected, the diagnosis computer stores this data in a large-capacity memory, and displays the abnormality.

Overall diagnosis apparatus for vehicle-mounted control devices

A communication control unit for controlling communication between an electronic control unit and other equipment or other electronic control units, the communication control unit functioning to judge whether or not the operation of the electronic control unit is normal and, if it is judged that the electronic control unit is operating abnormally, the communication control unit acts to reset the electronic control unit to an initial operating status in order to attempt recovery from the abnormal condition, while halting transmission by the electronic control unit until it is judged that the electronic control unit has commenced to operate normally.

Communication control unit providing isolation of failure condition of

A data network system for a vehicle having a plurality of separate and distinct control computers carrying out a predetermined control function of the vehicle and a data communication line for communicating data among the control computers. One of the control computers determines the number of the other computers which are linked with the data communication line, and in response to that number a data transfer rate output from each of the control computers to the data communication line is determined.

Network system for data communication in a vehicle

A rotation signal Ne is generated for every 1.degree. of rotation of the engine crankshaft together with a crankshaft angle signal G for every 360.degree. of crankshaft rotation. In response to each rotation signal Ne, a pseudo random number generator generates random number data which is converted to analog data by a D/A converter and supplied to a comparator circuit. An intake air pressure detection data Pim is also supplied to the comparator circuit and the two signals are compared. When the detection data Pim is larger than the converted analog data, the comparator output level is high. The output from the comparator is read for every rotation signal Ne and, when the detection data is larger than the analog data from the D/A converter, a counter is incremented. The count value is read for every generation of the crankshaft signal G and is supplied to the engine control unit as the intake air pressure detection data. The counter is then reset to the initial count value.

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Kariya, Japan

Susumu Akiyama