Hitachi, Ltd.

Mitsumi Electric Company Ltd.

Hitachi Automotive Systems, Ltd.

Hitachi Astemo Ltd.

Other

Renesas Technology Corp.

Hitachi Construction Machinery Co., Ltd.

Mitsumi Electric, Ltd.

Kohei Sakurai

Nobuyasu Kanekawa

Masatoshi Hoshino

Shoji Sasaki

Mitsuru Watabe

Yuichiro Morita

Kotaro Shimamura

Fumio Murabayashi

Satoshi Otsuka

Kenichi Kurosawa

Hiromichi Yamada

Yoshiaki Takahashi

Yoichi Takano

Kentaro Yoshimura

Masahiro Matsumoto

Toshimichi Minowa

Keiji Hanzawa

Minoru Ohsuga

Tatsumi Yamauchi

Yasuhiro Nakatsuka

Atsushi Miyazaki

Atsushi Kanke

Kenji Tabuchi

Hidetoshi Teraoka

Tasuku Ishigooka

Kunihiko Tsunedomi

Masahiro Matsubara

Toshio Hayashibara

Kenichi Osada

Yutaka Nishimura

Fumio Narisawa

Katsuya Oyama

Noriyoshi Urushiwara

Shinichiro Maki

Satoshi Tanaka

Akihiro Terada

Neeraj Suri

Tetsuya Yamada

Kazuyoshi Serizawa

Yutaka Takaku

Takashi Ogawa

Fumio Arakawa

Kazuo Fujishima

Yoichi Iihoshi

Naoki Yada

Mitsuhiro Kitani

Taisetsu Tanimichi

Seikou Suzuki

Masaaki Shimizu

Masahiro Komachiya

Fumiharu Nakahara

Ken Naono

Tomohito Ebina

Yuki Horita

Takahiro Iida

Toshifumi Yoshikawa

Shinsuke Inoue

Mikio Kataoka

Hiromichi Ito

Makoto Kudo

Marco Serafini

Mittsuru Watabe

Habib Saissi

Nobuya Kanekawa

Thorsten Piper

Stefan Winter

Atsuhiro Ohno

A current detecting circuit includes a first switching element, a second switching element, and a third switching element electrically coupled in series with the first switching element. An output side of the third switching element is electrically coupled to an output terminal. The current detecting circuit includes a current amplifier configured to detect a difference between a first output voltage of the first switching element and a second output voltage of the second switching element. The current amplifier outputs a relative current to be used for detecting an output current that flows out from the output terminal. A ratio of resistance associated with the first switching element to resistance associated with the second switching element is n:1.

Current detecting circuit and switching circuit

A power supply semiconductor IC includes: an output transistor connected between a voltage-input terminal and a voltage-output terminal; a control circuit that controls the output transistor based on a feedback voltage of an output voltage; a current-limit circuit that limits an output current of the output transistor such that the output current is not equal to or greater than a current limit; a first transistor constituting a current-mirror circuit with the output transistor; a short-circuit-fault detection circuit that detects a short circuit of the voltage-output terminal based on a voltage across a resistor connected in series to the first transistor; and a first output terminal that outputs a detection result of the short-circuit-fault detection circuit. The current limit is within a detection range of the short-circuit-fault detection circuit. The short-circuit-fault detection circuit detects a short circuit of the voltage-output terminal even while the current limit circuit limits the output current.

Power supply semiconductor integrated circuit including a short-circuit-fault detection circuit that detects a short circuit of the voltage-output terminal

An in-vehicle processing device includes: a signal input unit that generates input data based on an input signal from outside; a processing unit that executes arithmetic processing for calculating output data based on the input data; a signal output unit that generates an output signal based on the output data to output the output signal to the outside; and a storage unit that stores application software for causing the processing unit to execute the arithmetic processing. The application software includes: a data management layer for managing object data which is a collection of data corresponding to a given target element on the storage unit; a data adaptation layer for generating the object data based on the input data to output the generated object data to the data management layer; and a data operation layer for acquiring the object data from the data management layer to calculate the output data based on the acquired object data.

In-vehicle processing device

A power supply semiconductor integrated circuit includes an output transistor, a control circuit, a first-fault detection circuit, a second-fault detection circuit, a delay circuit, and a latch circuit. The output transistor is connected between a voltage-input terminal to which a DC voltage is input and a voltage-output terminal. The control circuit controls the output transistor. The first-fault detection circuit detects a first fault. The second-fault detection circuit detects a second fault different from the first fault. The delay circuit delays an output of the first-fault detection circuit and an output of the second-fault detection circuit. The latch circuit captures and holds an output of the delay circuit. The delay circuit includes: a constant current source for charging a delay capacitor; a discharge switch for discharging the delay capacitor; and a voltage comparator circuit that compares a charge voltage across the delay capacitor and a predetermined voltage.

Power supply semiconductor integrated circuit

A software update device is connected to a control device and includes an update control unit executing an update process of causing software for the control device to transit from a non-updated state to a completely updated state, a recovery control information managing unit acquiring recovery control information, and a recovery control unit executing a recovery process of causing the software to transit to the completely updated state on a basis of the recovery control information in a case where an abnormality in the update process has prevented the software from transiting to the completely updated state.

Software update device, software update method, and software update system

The present invention makes it possible to reduce the volume of communication data necessary for updating the configuration of a circuit unit of a reconfigurable circuit device. In an vehicle control systemincluding an FPGA, the FPGAincludes a circuit unit including a reconfigurable circuit and a circuit SRAM that stores configuration information of the circuit unit. A transfer check unit that acquires a difference command regarding a change part of a circuit element in the circuit unit, and a data conversion unitthat updates the configuration information based on the difference command are provided. Further, in the vehicle control system, a non-volatile memorythat stores the configuration information to be stored in the circuit SRAM is further provided. The data conversion unitmay update the configuration information stored in the non-volatile memorybased on the difference command acquired by the transfer check unit.

Electronic control system for updating circuit

In the present invention, control feasibility in a vehicle control system architecture is efficiently determined by performing determination based on control feasibility in a physical element based on a converted parameter when a logical architecture is arranged in a physical architecture. The present invention includes: an arrangement unitthat arranges a logical architecture, which includes a linkage of each of logical functions and an execution time constraint of the linkage, in a physical architecture; a delay time calculation unitthat calculates a processing delay time based on a converted parameter when the logical architectureis arranged in the physical architecture; and a verification unitthat verifies whether a total of the processing delay time satisfies the execution time constraint.

Vehicle control system validation technique and validation device, and control device

The autonomous driving ECU includes a first communication unit that transmits and receives autonomous driving data to and from the plurality of data ECUs, and a vehicle control unit that controls a vehicle on the basis of the autonomous driving data transmitted from the plurality of data ECUs. Each data ECU includes a data construction unit that performs a construction of the autonomous driving data transmitted to the autonomous driving ECU, and a second communication unit that transmits and receives the autonomous driving data to and from the autonomous driving ECU. If a predetermined event occurs, among the data ECUs, the data construction unit of the data ECU in which the predetermined event occurs constructs the autonomous driving data so that a total amount of the autonomous driving data transmitted from the data ECU in which the predetermined event occurs is not greater than a predetermined amount of data.

Autonomous driving system, autonomous driving control method, data ECU, and autonomous driving ECU

The purpose of the present invention is to provide a system in which the reliability of an automatic driving system can be excellently complemented by a different control system while the automatic driving system is effectively used. The vehicle control device outputs to a drive device one of a first control signal generated on the basis of automatic driving control information, and a second control signal generated on the basis of the relative information between a vehicle and a surrounding object. If an abnormality is detected in the automatic driving control information, the second control signal is output to the drive device in place of the first control signal.

Vehicle control device and vehicle control system

The present invention provides a technology for comprehensive verification of the safety of the design of functions, on the basis of a safety analysis result. The disclosed vehicle control system verification device is equipped with a storage device that stores programs for verifying the safety of the logical architecture of a vehicle control system, and a processor that reads the programs from the storage device and verifies the safety of the logical architecture. On the basis of safety analysis result information that is supplied, the processor executes a process for verifying whether the logical architecture has logical functions corresponding to the safety analysis result.

Vehicle control system verification device, vehicle control system, and vehicle control system verification method

The purpose of the present invention is to provide a system such that functions of a vehicle control system can be quickly reconfigured. The present invention is a processing device connected to at least one processing device, wherein during a period in which the one processing device executes a control operation on the basis of a control program installed in the one processing device, the processing device acquires a substitute program for the control program. In another aspect, the present invention is an on-board control system equipped with multiple processing devices, wherein during a period in which one processing device among the multiple processing devices executes a control operation on the basis of a control program installed in the one processing device, another processing device acquires a substitute program for the program in the one processing device.

Processing device and vehicle control system

In order to address the problem of providing a high-safety vehicle control system and action plan system, the present invention provides a vehicle control system comprising a trajectory generation determination unit () having an emergency trajectory generating unit () for calculating an emergency trajectory while driving is being switched from a system to a driver at the time of a fault, and a motion control unit () having a trajectory retaining unit () for retaining the emergency trajectory and a trajectory switching unit () for switching whether to travel in the emergency trajectory retained by the trajectory retaining unit on the basis of a fault state detected by a malfunction detection unit.

Vehicle control system and action plan system provided with same

The purpose of the present invention is to provide a vehicle control technique that enables the safety of function substitution to be increased. This vehicle control device determines whether a substitution was successful by monitoring the operations which follow initiation of the substitution.

A negative power supply control circuit which controls a negative voltage regulator circuit based on a positive voltage control signal, the negative power supply control circuit including: a control signal input terminal a negative voltage input terminal; a negative voltage input control signal output terminal; a voltage current conversation circuit; a first current source; and a first clamp circuit, wherein the first clamp circuit clamps a voltage at a first intermediate point between the first clamp circuit and the first current source by limiting a current flowing in the first clamp circuit according to the voltage at the first intermediate point in a period when a current flows in the voltage current conversation circuit, and the negative voltage controls signal is generated based on a voltage or a current in a current path through the voltage current conversation circuit, the first clamp circuit and the first current source.

Negative power supply control circuit and power supply device

A power circuit includes an input terminal to which an input voltage is applied; a control element which generates an output voltage obtained by regulating the input voltage; an output terminal from which the output voltage is output; a discharge circuit which discharges by extracting an electric charge from the control element on a side of the output terminal; a drive circuit which generates a drive current for causing the discharge circuit to operate using power of the control element on the side of the input terminal; a detection circuit which detects the output voltage; and a discharge control circuit which decreases a current value of the drive current to a current value enabling the discharge circuit to continuously operate in a case where the detection circuit detects that the output voltage reaches a setup voltage by an operation of the discharge circuit.

Power circuit

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Hitachi, Japan

Kohei Sakurai