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    • 12. 发明授权
    • Displacement information detecting apparatus and doppler velocimeter
apparatus
    • 位移信息检测装置和多普勒速度计装置
    • US5483332A
    • 1996-01-09
    • US419746
    • 1995-04-10
    • Makoto TakamiyaJun AshiwaHidejiro KadowakiYasuhiko Ishida
    • Makoto TakamiyaJun AshiwaHidejiro KadowakiYasuhiko Ishida
    • G01F1/66G01P3/36G01P5/00G01P5/26G01S7/481G01S17/58
    • G01P3/366G01P5/26G01S17/58G01S7/4812
    • A doppler velocimeter determines the velocity of an object moving through a beam intersection area by using a doppler frequency obtained by detecting light from the beam intersecting area. The doppler velocimeter includes: a light source; a diffraction grating for diffracting light received from the light source; first and second lens systems for transmitting diffracted light from the diffraction grating to irradiate a portion of a movable object to be examined, the first and second lens systems having the same focal length F; and a detector device for receiving light from the portion of the object irradiated with the light which has been transmitted through the first and second lens systems and for obtaining a doppler signal used for velocity determination. The interval between the first and second lens systems is twice as long as the focal length F. Spherical aberration caused by a portion of the first lens system through which the diffracted light travels is offset by spherical aberration caused by a portion of the second lens system through which the diffracted light travels. This simple construction achieves equidistant interference fringes over the beam intersection area.
    • 多普勒速度计通过使用通过检测来自光束相交区域的光获得的多普勒频率来确定移动通过光束交叉区域的物体的速度。 多普勒测速仪包括:光源; 用于衍射从光源接收的光的衍射光栅; 第一和第二透镜系统,用于从衍射光栅发射衍射光以照射待检查的可移动物体的一部分,第一和第二透镜系统具有相同的焦距F; 以及检测器装置,用于接收来自已经透过第一和第二透镜系统的光照射的物体的部分的光,并且用于获得用于速度确定的多普勒信号。 第一透镜系统和第二透镜系统之间的间隔是焦距F的两倍。由衍射光穿过的第一透镜系统的一部分引起的球面像差由第二透镜系统的一部分引起的球面像差 衍射光通过其传播。 这种简单的结构在光束交叉区域上实现了等距离的干涉条纹。
    • 13. 发明授权
    • Velocimeter, signal processing method, and driving system using the same
    • 速度计,信号处理方法和使用其的驱动系统
    • US5831720A
    • 1998-11-03
    • US734542
    • 1996-10-21
    • Yasuhiko IshidaMakoto Takamiya
    • Yasuhiko IshidaMakoto Takamiya
    • G01P3/36G01S7/48G01S17/58
    • G01P3/366
    • A velocimeter includes a light source for irradiating light onto an object to be measured, a light-receiving element for receiving scattered light from the object and outputting a light-receiving signal upon receiving the scattered light, a signal processing circuit for obtaining velocity information of the object to be measured by performing signal processing of the light-receiving signal output from the light-receiving element, a bandpass filter arranged in the signal processing circuit and having a function of passing frequency components near the frequency of the light-receiving signal to be obtained when the object to be measured is in a still state, and a switch arranged in the signal processing circuit to activate the bandpass filter substantially in the signal processing circuit when the moving velocity of the object to be measured is low.
    • 一种速度计包括用于将光照射到被测量物体上的光源,用于从物体接收散射光并在接收到散射光时输出光接收信号的光接收元件,用于获得速度信息的信号处理电路 通过对从光接收元件输出的光接收信号进行信号处理来测量的物体,配置在信号处理电路中的带通滤波器,具有将接收光信号的频率附近的频率分量通过的功能, 当待测量对象处于静止状态时,以及布置在信号处理电路中的开关,当待测量对象的移动速度低时,基本上在信号处理电路中激活带通滤波器。
    • 19. 发明授权
    • Engine control apparatus including A/D converter failure detection
element and method therefor
    • 发动机控制装置,包括A / D转换器故障检测元件及其方法
    • US5184302A
    • 1993-02-02
    • US647967
    • 1991-01-30
    • Yasuhiko IshidaKatsuhiko Kondo
    • Yasuhiko IshidaKatsuhiko Kondo
    • F02D43/00F02D41/22F02D41/24F02D41/26F02D45/00
    • F02D41/28F02D41/22F02D41/266
    • An engine control apparatus includes an operational condition detecting device for detecting the operational condition of an engine, an A/D converter for converting an analog output from the operational condition detecting device into a digital output, an abnormality detecting device for detecting an abnormality in the A/D converter, an arithmetic circuit for calculating a control quantity for the engine based on the digital output of the A/D converter and a driver for actuating selected devices included in the engine in accordance with the control quantity. According to one aspect of the invention, the control quantity for the engine is replaced by a control quantity calculated based on a previously determined fixed value based on whether an abnormal state in the A/D converter is detected. According to another aspect of the invention, the driver performs the actuation of the sections of the engine in accordance with a control quantity from a backup circuit, which resets the arithmetic circuit when an abnormal state in the A/D converter is detected. Methods of operating a control system in the event of A/D converter failure are also discussed.
    • 一种发动机控制装置,包括用于检测发动机的运转状况的运转状态检测装置,将来自运转状态检测装置的模拟输出转换成数字量输出的A / D转换器,检测上述运转状态检测装置的异常的异常检测装置 A / D转换器,用于基于A / D转换器的数字输出计算发动机的控制量的运算电路和用于根据控制量致动包括在发动机中的选定装置的驱动器。 根据本发明的一个方面,基于是否检测到A / D转换器中的异常状态,将基于先前确定的固定值计算的控制量替换为发动机的控制量。 根据本发明的另一方面,驱动器根据来自备用电路的控制量来执行发动机的各部分的动作,该备用电路当检测到A / D转换器中的异常状态时复位运算电路。 还讨论了在A / D转换器故障的情况下操作控制系统的方法。