公开(公告)号：US08467441B2

公开(公告)日：2013-06-18

申请号：US13157906

申请日：2011-06-10

申请人： Hideo Sawaoka ,  Yasuaki Makino ,  Toshihiko Matsuoka

发明人： Hideo Sawaoka ,  Yasuaki Makino ,  Toshihiko Matsuoka

IPC分类号： H03K7/08

CPC分类号： H03K7/08 ,  H04L25/4902

摘要： In a PWM communication system, a sensor unit transmits as reference pulses transmission signals, which exhibit duty cycles of 100% and 0%, respectively, prior to transmission of a transmission signal, which has data items compressed thereinto by a signal processing circuit. An input capture circuit of an ECU measures the duty time and the PWM cycle of the transmission signal according to a timer clock of a timer circuit. A signal processing circuit of the ECU produces a duty cycle correction factor k based on the measured duty times and PWM cycles of the reference pulses, produces receiving data based on the duty time and the PWM cycle of the transmission signal, and the duty cycle correction factor, and separates the receiving data into sensor output values of a pressure sensor and a temperature sensor.

摘要翻译： 在PWM通信系统中，传感器单元作为参考脉冲发送传输信号，传输信号在传输信号之前分别表现出占有率为100％和0％的传输信号，传输信号具有由信号处理电路压缩的数据项。 ECU的输入捕捉电路根据定时器电路的定时器时钟来测量发送信号的占空比和PWM周期。 ECU的信号处理电路基于测量的占空比时间和参考脉冲的PWM周期产生占空比校正因子k，基于发送信号的占空比和PWM周期产生接收数据，并且占空比校正 因子，并将接收数据分离成压力传感器和温度传感器的传感器输出值。

公开(公告)号：US20110310954A1

公开(公告)日：2011-12-22

申请号：US13157906

申请日：2011-06-10

申请人： Hideo Sawaoka ,  Yasuaki Makino ,  Toshihiko Matsuoka

发明人： Hideo Sawaoka ,  Yasuaki Makino ,  Toshihiko Matsuoka

IPC分类号： H03K7/08

CPC分类号： H03K7/08 ,  H04L25/4902

摘要： In a PWM communication system, a sensor unit transmits as reference pulses transmission signals, which exhibit duty cycles of 100% and 0%, respectively, prior to transmission of a transmission signal, which has data items compressed thereinto by a signal processing circuit. An input capture circuit of an ECU measures the duty time and the PWM cycle of the transmission signal according to a timer clock of a timer circuit. A signal processing circuit of the ECU produces a duty cycle correction factor k based on the measured duty times and PWM cycles of the reference pulses, produces receiving data based on the duty time and the PWM cycle of the transmission signal, and the duty cycle correction factor, and separates the receiving data into sensor output values of a pressure sensor and a temperature sensor.

摘要翻译： 在PWM通信系统中，传感器单元作为参考脉冲发送传输信号，传输信号在传输信号之前分别表现出占有率为100％和0％的传输信号，传输信号具有由信号处理电路压缩的数据项。 ECU的输入捕捉电路根据定时器电路的定时器时钟来测量发送信号的占空比和PWM周期。 ECU的信号处理电路基于测量的占空比时间和参考脉冲的PWM周期产生占空比校正因子k，基于发送信号的占空比和PWM周期产生接收数据，并且占空比校正 因子，并将接收数据分离成压力传感器和温度传感器的传感器输出值。

公开(公告)号：US07117081B2

公开(公告)日：2006-10-03

申请号：US10687662

申请日：2003-10-20

申请人： Hideo Sawaoka

发明人： Hideo Sawaoka

IPC分类号： G01M15/04 ,  G01L25/00

CPC分类号： G01M15/04

摘要： An evaluation system for a fault diagnosis function has an engine ECU. The ECU is connected to an engine, sensors, and a MIL. The ECU diagnoses the sensors. The ECU also determines whether a diagnosis process of the diagnosis function for the sensors is completed. A memory stores a plurality of the completion result. When at least one of the diagnosis processes is completed in the last ten completion result, it is determined that the diagnosis function is in a normal condition. Otherwise, it is determined that the diagnosis function is in an abnormal condition, and the MIL indicates the abnormal condition.

摘要翻译： 用于故障诊断功能的评估系统具有发动机ECU。 ECU连接到发动机，传感器和MIL。 ECU诊断传感器。 ECU还确定传感器诊断功能的诊断过程是否完成。 存储器存储多个完成结果。 当在最后十个完成结果中完成至少一个诊断过程时，确定诊断功能处于正常状态。 否则判断为诊断功能处于异常状态，MIL表示异常状态。