Denso Corporation

Murata Manufacturing Co., Ltd.

Yusuke Takahashi

Akito Ito

Kotaro Tanaka

Keisuke Atsumi

Toru Itabashi

Shigeki Nishiyama

Ryoichi Shiraishi

Takahiko Furuta

Yuuki Mikami

Hiroaki Nakamura

Yudai Hosoi

A drive device includes a driver, a determination storage, a comparator, and at least one of a control storage and a monitor storage. The control storage stores a control pattern that includes a signal instructing a conduction state of each of loads. The driver control semiconductor switches respectively corresponding to the loads according to the control pattern. The determination storage stores a determination pattern. The monitor storage stores a monitor pattern that is a result of monitoring the conduction state of each of the loads. The comparator compares the determination pattern with a comparison pattern that is at least one of the control pattern and the monitor pattern, and determine that an abnormality of the comparison pattern has occurred in response to that the determination pattern and the comparison pattern satisfy a predetermined correspondence relationship.

Drive circuit for controlling conduction states of multiple loads

A vehicle control system is communicably connected with an electronic controller and a control circuit. The control circuit is controlled by the electronic controller as a control target. The vehicle control system communicates with the electronic controller using a control communication frame and communicates with the control circuit using a circuit communication frame. The control communication frame and the circuit communication frame have different formats from one another. The vehicle control system includes at least one of a first sequence circuit converting the control communication frame into the circuit communication frame or a second sequence circuit converting the circuit communication frame into the control communication frame.

Vehicle control system and circuit device

A drive device includes: a control storage unit of a current value of a control signal indicating a drive state of each of loads; a drive unit of the switches according to the current value; an acquisition unit of a current drive state of each load; a determination storage unit of a transition determination value; and a determination unit that compares a correlated drive state of each load correlated with the current value with the transition determination value, and determines that the current value is abnormal when the correlated drive state and the transition determination value satisfy a predetermined corresponding relationship.

Drive device

A drive device includes: a receiving unit of a load control signal indicative of a drive state of each load; a control storage unit of the load control signal; a drive unit of the switches according to the load control signal; an acquisition unit of a current drive state of each load at a present time, or a current vehicle state; a determination storage unit of a transition determination value; and a determination unit that compares a correlated drive state of each load correlated with the load control signal with the transition determination value, and determines that the load control signal is abnormal when the correlated drive state and the transition determination value satisfy a predetermined corresponding relationship.

Drive device and driving system

A load drive system includes a communication bus; a controller; and a driver. The controller has a CAN transceiver and a CAN controller that transmit an instruction message instructing a drive state of a solenoid of an automatic transmission via the communication bus. The driver has (i) a CAN transceiver and a CAN controller that receive the instruction message via the communication bus, and (ii) a drive circuit that drives the solenoid according to the received instruction message. The controller transmits a first periodic message in a first cycle and a second periodic message in a second cycle, respectively as the instruction message.

Load drive system

A load drive system, capable of providing certainty about instructions transmitted from a load control device to a load drive device as well as suppressing an increase of processing load, includes an ECU, a drive device, a communication bus to which the ECU and the drive device are connected, and a third signal line different from the communication bus connecting the ECU and the drive device. The ECU generates a frame including a drive instruction message, and transmits the message to the drive device via the communication bus. The drive device receives the frame via the communication bus, and extracts the drive instruction message from data of data field in the received frame. The drive device converts the drive instruction message into a load drive signal, and notifies the converted load drive signal to the ECU via the third signal line.

An electronic control device includes a substrate, a plurality of component-mounted wires, a plurality of electronic components, a common wire, an interrupt wire and a protective layer. The component-mounted wires and the common wire are disposed on the substrate. The electronic components are mounted on the respective component-mounted wires and are coupled with the common wire. The interrupt wire is coupled between one component-mounted wire and the common wire, and is configured to melt in accordance with heat generated by an overcurrent to interrupt a coupling between the component-mounted wire and the common wire. The protective layer covers a surface of the substrate including the interrupt wire and defines an opening portion so that at least a portion of the interrupt wire is exposed.

Growing community of inventors

Kariya, Japan

Yusuke Takahashi