公开(公告)号：US20140114599A1

公开(公告)日：2014-04-24

申请号：US14058427

申请日：2013-10-21

Applicant: DENSO CORPORATION

Inventor： Tomoya YOSHIZAKI ,  Keita OOMI ,  Daisuke KAWAKAMI

IPC: G01D5/244

CPC classification number: G01D3/028

Abstract: An in-vehicle electronic control unit (ECU) for correcting an error introduced to a sensor output signal as a result of amplification is provided. An output voltage of first and second voltage generators and after-amplification voltages of such output voltages are respectively A/D converted for input into a linear function. A microcomputer adjusts the output voltage of the first and second voltage generators which are amplified by the amplification circuit so that the output signals of the first and second voltage generators are adjusted to increase a voltage difference between the two. The increased voltage difference allows accurate identification of the linear function and removal of the error that is introduced to the sensor output signal during the course of processing by the amplification circuit.

Abstract translation: 提供了一种用于校正作为放大的结果引入传感器输出信号的误差的车载电子控制单元（ECU）。 这种输出电压的第一和第二电压发生器的输出电压和后置放大电压分别被A / D转换成线性函数。 微型计算机调节由放大电路放大的第一和第二电压发生器的输出电压，使得调整第一和第二电压发生器的输出信号以增加两者之间的电压差。 增加的电压差允许在放大电路的处理过程中精确地识别线性函数和去除引入到传感器输出信号的误差。

公开(公告)号：US20130246007A1

公开(公告)日：2013-09-19

申请号：US13798267

申请日：2013-03-13

Applicant: DENSO CORPORATION

Inventor： Keita OOMI

IPC: G06F3/00

CPC classification number: G06F3/007 ,  F02D35/027 ,  F02D41/009

Abstract: A microcomputer which constitutes an ECU transmits a start/stop signal and a crank angle signal to an analog input circuit. The analog input circuit is activated when the start/stop signal is received. The A/D converter converts a sensor signal into a digital signal. The digital processor detects a peak value of the digital signal. A counter restarts a counting operation when the crank angle signal is received. A data register sends a detected data of the peak value as a specified information adding by a count value and an information of the crank angle signal to the microcomputer. The microcomputer acquires the crank angle of the specified information by computing the crank angle from the detected data.

Abstract translation: 构成ECU的微型计算机向模拟输入电路发送开始/停止信号和曲柄角信号。 当接收到启动/停止信号时，模拟输入电路被激活。 A / D转换器将传感器信号转换为数字信号。 数字处理器检测数字信号的峰值。 当接收到曲柄角信号时，计数器重新开始计数操作。 数据寄存器将检测到的峰值的数据作为附加计数值的指定信息和曲柄角信号的信息发送给微型计算机。 微型计算机通过从检测到的数据计算曲轴角度来获取指定信息的曲柄角。

公开(公告)号：US20130275070A1

公开(公告)日：2013-10-17

申请号：US13793450

申请日：2013-03-11

Applicant: DENSO CORPORATION

Inventor： Keita OOMI

IPC: G01L19/04

CPC classification number: G01L19/04 ,  F02D35/00 ,  F02D45/00 ,  G01L9/085 ,  G01L23/10

Abstract: An electronic control system includes a microcomputer and a signal processing circuit, and receives output signals of an in-cylinder pressure sensor and a crank angle sensor. The output signal of the pressure sensor indicates an output voltage of a piezoelectric transducer and a reference voltage. The signal processing circuit includes a hold circuit and a differential amplifier circuit. The differential amplifier circuit amplifies a difference between the output signal of the pressure sensor and the output signal of the hold circuit and outputs the result to the microcomputer. The hold circuit switches over the output signals in response to a switchover instruction of the microcomputer. When the switchover instruction is a set instruction, the hold circuit holds as its output signal the output signal of the pressure sensor outputted at the time of receiving the set instruction. The microcomputer outputs the set instruction to the hold circuit in response to the output signal of the crank angle sensor.

Abstract translation: 电子控制系统包括微型计算机和信号处理电路，并且接收缸内压力传感器和曲柄角传感器的输出信号。 压力传感器的输出信号表示压电换能器的输出电压和参考电压。 信号处理电路包括保持电路和差分放大电路。 差分放大器电路放大压力传感器的输出信号与保持电路的输出信号之间的差，并将结果输出到微计算机。 保持电路响应于微计算机的切换指令切换输出信号。 当切换指令为设定指令时，保持电路作为其输出信号保持接收设定指令时输出的压力传感器的输出信号。 微型计算机响应于曲轴转角传感器的输出信号将设定指令输出到保持电路。