公开(公告)号：US20150175170A1

公开(公告)日：2015-06-25

申请号：US14520482

申请日：2014-10-22

Applicant: DENSO CORPORATION

Inventor： Mitsuru AOKI

IPC: B60W50/00

CPC classification number: H04L12/6418 ,  B60W50/023 ,  B60W2050/0006

Abstract: An ECU for controlling a system providing a safety function with a high-order ASIL and for providing safety mechanisms with low-order ASILs includes: CPUs including first and second CPUs; a memory; and an anti-interference device. Each CPU executes first and second monitoring functions according to the low-order ASILs. The first monitoring function provides to monitor whether a control function of the system is properly executed, and the second monitoring function provides to monitor whether the first monitoring function is properly executed. The memory has a first area for the first CPU and a second area for the second CPU. The anti-interference device executes a prevention of an interference or a record of a history of the interference. The interference includes a first interference provided to the second area by the first CPU and a second interference provided to the first area by the second CPU.

Abstract translation: 用于控制提供具有高阶ASIL的安全功能的系统并用于提供具有低阶ASIL的安全机制的ECU包括：包括第一和第二CPU的CPU; 记忆 和抗干扰装置。 每个CPU根据低阶ASIL执行第一和第二监视功能。 第一监视功能用于监视系统的控制功能是否正确执行，第二监视功能用于监视第一监视功能是否正确执行。 存储器具有用于第一CPU的第一区域和用于第二CPU的第二区域。 抗干扰装置执行防止干扰历史或干扰历史的记录。 干扰包括由第一CPU提供给第二区域的第一干扰和由第二CPU提供给第一区域的第二干扰。

公开(公告)号：US20180076703A1

公开(公告)日：2018-03-15

申请号：US15701661

申请日：2017-09-12

Applicant: DENSO CORPORATION

Inventor： Yasuhiko HARADA ,  Mitsuru AOKI

IPC: H02M1/08 ,  H02M3/156 ,  H02P8/12

CPC classification number: H02M1/08 ,  H02M3/156 ,  H02M3/158 ,  H02M2001/0009 ,  H02M2003/1555 ,  H02P8/12

Abstract: A load driving apparatus supplies an electric power to a load via a full-bridge circuit. The load driving apparatus detects a load current by a current sensing resistor. A controller in the load driving apparatus generates a drive signal by switching between a first reference circuit outputting a first reference signal with a first reference cycle and a second reference signal outputting a second reference signal with a second reference cycle. A calculator in the load driving apparatus is used to supply a drive signal to the full-bridge circuit for supplying power to the load. When the controller 13 detects that the value of the load current is not reaching predetermined current threshold values, within either of the first reference cycle or the second reference cycle due to temperature fluctuations, the controller switches to either the first reference circuit or the second reference circuit to stabilize the value of the load current around an average value.

公开(公告)号：US20220057364A1

公开(公告)日：2022-02-24

申请号：US17403601

申请日：2021-08-16

Applicant: DENSO CORPORATION

Inventor： Mitsuru AOKI

IPC: G01N27/626 ,  G01N33/00 ,  H03M1/56

Abstract: A gas concentration detection device includes: a gas concentration sensor having a gas sensor element that outputs an electric signal according to a gas concentration and a heater that heats the gas sensor element; a heater controller controlling energization and de-energization of the heater; a sensor controller having an ADC AD-converting the electric signal from an analog signal to a digital signal in synchronization with a sampling clock (fs) and detecting the gas concentration based on an output signal of the AD converter; and a timing adjuster shifting a switching timing of energization control from a conversion timing at which the AD converter performs the AD conversion.

公开(公告)号：US20200381913A1

公开(公告)日：2020-12-03

申请号：US16889951

申请日：2020-06-02

Applicant: DENSO CORPORATION

Inventor： Yasuhiko HARADA ,  Mitsuru AOKI

IPC: H02H3/16 ,  H01F7/06 ,  H02H1/00

Abstract: In an inductive load control device, an energization controller controls an operation of an H-bridge circuit to switch from an energized state to a regenerative state when a load current value is equal to or greater than a first threshold value at a time after a mask time has elapsed from a start time of a reference cycle, and a short-circuit determination processor determines whether the short-circuit abnormality has occurred based on whether the load current value is equal to or greater than a second threshold value greater than the first threshold value. The short-circuit determination processor further determines whether the short-circuit abnormality has occurred based on the regenerative current value in the regenerative state when the load current value does not reach the second threshold value within the mask time.

公开(公告)号：US20200295685A1

公开(公告)日：2020-09-17

申请号：US16812635

申请日：2020-03-09

Applicant: DENSO CORPORATION

Inventor： Kenta IMAMIYA ,  Mitsuru AOKI ,  Yasuhiko HARADA

IPC: H02P8/38

Abstract: A bipolar stepper motor driving device drives a stepper motor including stator coils having plural phases. The bipolar stepper motor driving device includes H-bridge circuits, a current detector, a control circuit, and a re-turning-on instruction unit. The H-bridge circuits are provided correspondingly to the phases of the respective stator coils. The current detector detects current flowing in the stator coils. The control circuit executes drive control of the H-bridge circuits. The re-turning-on instruction unit commands the control circuit to switch into a short-circuited state a stator coil which has shifted from an energized state to an off-state among the stator coils, on a condition that an absolute value of a reverse current detected by the current detector has changed from a value larger than a threshold current value to a value smaller than the threshold current value.

公开(公告)号：US20190294488A1

公开(公告)日：2019-09-26

申请号：US16288523

申请日：2019-02-28

Applicant: DENSO CORPORATION

Inventor： Daichi MARUI ,  Mitsuru AOKI

IPC: G06F11/07 ,  F02D41/26 ,  F02D11/10 ,  G06F11/22 ,  G06F11/30 ,  H01H47/00

Abstract: An electronic control unit includes a computer that outputs a monitoring signal and an external monitoring circuit that monitors a state of the computer based on the monitoring signal. The computer includes a monitoring signal output section that generates and outputs the monitoring signal to the external monitoring circuit by performing a software process; a self-diagnostic section that self-diagnoses the computer and detects an abnormality by identifying a cause of the abnormality; and a break signal output section that outputs a break signal to interrupt an input of the monitoring signal to the external monitoring circuit by performing a hardware process when an abnormality in the monitoring signal output section is detected.

公开(公告)号：US20160357237A1

公开(公告)日：2016-12-08

申请号：US15071253

申请日：2016-03-16

Applicant: DENSO CORPORATION

Inventor： Mitsuru AOKI

IPC: G06F1/26 ,  G06F1/28

CPC classification number: G06F1/26

Abstract: An electronic control unit includes a microcomputer, a power supply IC and a peripheral circuit part. The microcomputer includes a core operable with a first power supply voltage and an input/output circuit operable with a second power supply voltage higher than the first power supply voltage. The power supply IC generates the first power supply voltage and the second power supply voltage. The peripheral circuit part has a first input terminal for the first power supply voltage, a second input terminal for the second power supply voltage, and an internal circuit operable with a potential between the first power supply voltage and the second power supply voltage. A core input terminal for the first power supply voltage, a first output terminal for the first power supply voltage in the power supply IC and the first input terminal are electrically connected one another.

Abstract translation: 电子控制单元包括微型计算机，电源IC和外围电路部分。 微型计算机包括可操作的第一电源电压的核和可操作于高于第一电源电压的第二电源电压的输入/输出电路。 电源IC产生第一电源电压和第二电源电压。 外围电路部分具有用于第一电源电压的第一输入端子，用于第二电源电压的第二输入端子以及可在第一电源电压和第二电源电压之间的电位工作的内部电路。 用于第一电源电压的核心输入端子，用于电源IC中的第一电源电压的第一输出端子和第一输入端子彼此电连接。

公开(公告)号：US20150178144A1

公开(公告)日：2015-06-25

申请号：US14525259

申请日：2014-10-28

Applicant: DENSO CORPORATION

Inventor： Mitsuru AOKI

IPC: G06F11/07

CPC classification number: G06F11/0757 ,  G06F11/0739 ,  G06F11/076

Abstract: An ECU having a microcomputer for controlling a control object includes: a detection device that detects an anomalous operation of the microcomputer; a first reset device that outputs a reset signal for the microcomputer when the detection device detects the anomalous operation; a failsafe control device that executes a failsafe control operation for controlling the control object to be safer than the control object before resetting the microcomputer when the microcomputer is reset to a normal state; a counting device that counts a number of times of occurrence of the anomalous operation when the detection device detects the anomalous operation again after the failsafe control device starts to execute the failsafe control operation; and a second reset device that outputs the reset signal and holds an output of the reset signal when the number of times of occurrence reaches a predetermined number of times.

Abstract translation: 具有用于控制控制对象的微型计算机的ECU包括：检测微型计算机异常运行的检测装置; 第一复位装置，当检测装置检测到异常操作时，输出微机的复位信号; 故障保护控制装置，当微型计算机复位到正常状态时，执行用于在将微型计算机复位之前将控制对象控制得比控制对象更安全的故障保护控制装置; 计数装置，在所述故障保护控制装置开始执行所述故障保护控制动作之后，当所述检测装置再次检测出异常动作时，对所述异常动作的发生次数进行计数; 以及第二复位装置，当发生次数达到预定次数时，输出复位信号并保持复位信号的输出。