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    • 96. 发明授权
    • Method for calibrating an analog sensor
    • 校准模拟传感器的方法
    • US07194377B1
    • 2007-03-20
    • US11235388
    • 2005-09-26
    • Masashi SaitoBrian Wightman
    • Masashi SaitoBrian Wightman
    • G06F15/00
    • G01D5/24452G01D5/145
    • A method for determining the absolute angle of an angle position sensor over a predetermined rotation range and in which the sensor generates a repeating periodic analog signal across the rotation range. The initial position of the sensor is stored in memory when the sensor is in a predetermined initial angular position. Thereafter, the angular position of the sensor within the rotation range is determined as a function of both the sensor output signal and the stored angular position of the sensor. The current position of the sensor is iteratively stored in memory. Additionally, the sensor output is calibrated by dividing the sensor output into a plurality of arc segments across the rotation range. A polynomial curve fit is then applied to each arc segment to determine the calibration for the sensor and this calibration data is subsequently utilized to provide a signal representative of the absolute angle of the position sensor over the rotation range.
    • 一种用于确定角度位置传感器在预定旋转范围内的绝对角度的方法,其中所述传感器在所述旋转范围内产生重复周期性模拟信号。 当传感器处于预定的初始角位置时,传感器的初始位置被存储在存储器中。 此后,传感器在旋转范围内的角位置被确定为传感器输出信号和传感器存储的角位置的函数。 传感器的当前位置被迭代地存储在存储器中。 此外,传感器输出通过将传感器输出分成多个跨越旋转范围的弧段进行校准。 然后将多项式曲线拟合应用于每个弧段以确定传感器的校准,并且该校准数据随后被用于提供表示位置传感器在旋转范围上的绝对角度的信号。
    • 97. 发明申请
    • Stroke determination unit and method of measuring stroke in a multi-cylinder four-cycle engine
    • 一个多缸四冲程发动机的行程确定单元和测量方法
    • US20060218998A1
    • 2006-10-05
    • US11389324
    • 2006-03-24
    • Kenichi MachidaMasashi Saito
    • Kenichi MachidaMasashi Saito
    • G01L3/26
    • F02D41/009F02D2200/0406
    • A stroke determination unit for a 4-cycle engine uses intake pressure as a parameter to provide accurate stroke determination. A combined pressure combines the detected pressures of intake ports of the first to third cylinders, and stroke determination is carried out by recognizing, within a combined pressure waveform based on a detection value for the combined pressure, shapes of the combined pressure waveform for a specified phase period of a crankshaft. The pressure pattern recognition is carried out by storing variation patterns of pressure values measured within the specified crankshaft phase period, and collating patterns with a data map stored within an ECU. Alternatively, the pattern recognition is carried out by collating with condition equations representing “rising” or “upward peak”. With the latter, pressure variation due to contamination such as electrical noise to the pressure sensor is made negligible, and noise suppression of the stroke determination unit is improved.
    • 用于四轮发动机的冲程确定单元使用进气压力作为参数来提供精确的冲程确定。 组合压力将检测到的第一至第三气缸的进气口的压力相结合,并且通过基于组合压力的检测值在组合压力波形内识别针对特定的压力波形的组合压力波形的形状来进行行程确定 曲轴的相位周期。 压力模式识别通过存储在规定的曲轴相位周期内测量的压力值的变化模式,以及将存储在ECU内的数据图形对照图案进行。 或者,通过与表示“上升”或“上升”的条件方程对照来进行模式识别。 后者由于诸如电压噪声对压力传感器的污染引起的压力变化可以忽略不计,并且提高了行程确定单元的噪声抑制。
    • 99. 发明授权
    • Electronic still camera
    • 电子静物相机
    • US07053955B2
    • 2006-05-30
    • US11113491
    • 2005-04-25
    • Masashi SaitoYasutoshi Fujii
    • Masashi SaitoYasutoshi Fujii
    • H04N5/222
    • G02B7/28G02B7/32H04N5/23212
    • An electronic still camera, comprises a lens to form an image of a subject; a distant measuring section to measure a distance to a subject and to output a distance signal; an image capturing focusing section having a driving section to shift the lens within a scanning range determined based on the distance signal, an image capturing element to output an image signal of the image of the subject and a detecting section to detect a focusing point of the lens based on the image signal; and a light measuring section to measure a luminance of the subject and to output a luminance signal. The image capturing focusing section changes the scanning range of the lens in accordance with the luminance signal measured by the light measuring section.
    • 一种电子静态照相机,包括用于形成被摄物体的图像的透镜; 远程测量部分,用于测量到被摄体的距离并输出距离信号; 图像拍摄聚焦部分,具有驱动部分,用于在基于距离信号确定的扫描范围内移动透镜;图像捕获元件,用于输出被摄体图像的图像信号;以及检测部分, 透镜基于图像信号; 以及光测量部分,用于测量被摄体的亮度并输出亮度信号。 图像捕获聚焦部根据由光测量部测量的亮度信号来改变透镜的扫描范围。
    • 100. 发明申请
    • Non-contact position sensor
    • 非接触式位置传感器
    • US20050028614A1
    • 2005-02-10
    • US10910418
    • 2004-08-04
    • Masashi Saito
    • Masashi Saito
    • G01B7/30G01B7/00G01D3/036G01D5/14G01D5/18G01D5/244F02D41/00
    • G01D5/24452G01D3/0365G01D5/145G01D5/2448G01D5/24485G01D5/2449
    • A non-contact position sensor having improved rotational angle measuring accuracy is provided. A magnet is attached To a rotating shaft. An angle sensor element detects magnetic field changes generated from the magnet due to rotation of the rotating shaft. A signal processor, on the basis of a temperature detected by a temperature sensor, corrects variance between the sensors including the sensor element, the signal processor, and the magnet by correcting an amplitude value and/or an offset value of a signal or variance due to time of the amplitude value. The sensor element 1 outputs the first and second outputs v1 and v2 and the signal processor obtains the temperature coefficients of the amplitude values of the output v1 and output v2, or the temperature coefficients of the offset values, or the coefficients of variance due to time of the amplitude values, obtains the ratio of the first and second outputs corrected by these coefficients, and calculates the angle using the corrected ratio.
    • 提供了具有改进的旋转角度测量精度的非接触位置传感器。 磁铁附着在旋转轴上。 角度传感器元件检测由于旋转轴的旋转而从磁体产生的磁场变化。 信号处理器基于由温度传感器检测到的温度,通过校正信号的幅度值和/或信号的偏移值或方差来校正包括传感器元件,信号处理器和磁体的传感器之间的差异 到振幅值的时间。 传感器元件1输出第一和第二输出v1和v2,并且信号处理器获得输出v1和输出v2的振幅值的温度系数,或偏移值的温度系数或由于时间的方差系数 获得由这些系数校正的第一和第二输出的比率,并使用校正的比率来计算角度。