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公开(公告)号：US07786719B2
公开(公告)日：2010-08-31
申请号：US11817958
申请日：2006-03-01
IPC分类号： G01R31/00
CPC分类号： G01R15/247
摘要： A simple constitution together with an easy calibration of output by realizing a fast light intensity detection method is realized without using the carrier signal.An optical sensor, including: a sensor to which light from a light source is lead, and by which light intensity of the light is modulated based on a physical value; light receiving elements 61 and 62 receiving two elements of divided light PA and PB having polarized waves which are orthogonally crossing each other; a variable optical attenuator operating light which is received by the light receiving elements 61 and 62; and a variable amplifier operating output signals from the light receiving elements 61 and 62, wherein both a zero point of a sensor output and sensitivity are calibrated based on a light attenuation factor or an amplification factor which is adjusted when a physical value is detected by calculating a ratio between a sum and a difference of outputs of the light receiving elements 61 and 62.
摘要翻译： 在不使用载波信号的情况下实现简单的结构以及实现快速的光强度检测方法的输出的容易的校准。 一种光学传感器，包括：来自光源的光引导的传感器，并且基于物理值调制光的光强度; 光接收元件61和62接收具有彼此正交交叉的偏振波的分割光PA和PB的两个元件; 由光接收元件61和62接收的可变光衰减器操作光; 以及来自光接收元件61和62的输出信号的可变放大器，其中传感器输出和灵敏度的零点都基于光衰减因子或当通过计算检测到物理值时调节的放大系数来校准 光接收元件61和62的输出的和之和的比率。
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2.发明授权公开(公告)号：US07655900B2
公开(公告)日：2010-02-02
申请号：US11817955
申请日：2006-03-01
IPC分类号： G01R15/24 , G01R19/00 , G01R33/032
CPC分类号： G01R15/247
摘要： An influence on a sensor output is suppressed to a minimum degree even in the case when there is a ripple in a light source, thereby improving the measurement accuracy. In an intensity modulation type optical sensor, light from a light source 1 is guided to a sensor head 6, the intensity of the light is modulated on the basis of an alternating current (AC) measured object (for example, a current i) changing with time, the modulated light is received in a light receiving element 81 and converted into an electrical signal, and a normalized received signal Xs indicating a degree of modulation is acquired from a ratio of an AC component As and a DC component Ds of the electrical signal to thereby acquiring a value of the AC measured object. Further in this invention, a reference signal Vr is acquired by separating and receiving part of light incident on the sensor head 6, a normalized reference signal Xr is acquired from a ratio of an AC component Ar and a DC component Dr of the reference signal, and the normalized reference signal Xr is subtracted from the normalized received signal Xs, thereby reducing noises and improving the accuracy.
摘要翻译： 即使在光源中存在纹波的情况下，对传感器输出的影响也被抑制到最小程度，从而提高了测量精度。 在强度调制型光学传感器中，来自光源1的光被引导到传感器头6，基于交流（AC）测量对象（例如，电流i）的变化来调制光的强度 随着时间的推移，调制光被接收在光接收元件81中并被转换为电信号，并且从交流分量As和电气的直流分量Ds的比率获得表示调制度的归一化接收信号Xs 信号，从而获得AC测量对象的值。 此外，在本发明中，通过分离和接收入射在传感器头6上的一部分光获取参考信号Vr，从参考信号的AC分量Ar和DC分量Dr的比率获取归一化参考信号Xr， 并且从归一化接收信号Xs中减去归一化参考信号Xr，从而减少噪声并提高精度。
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3.发明申请Method for Reducing Temperature-Dependent Error in Photocurrent Sensor, and Photocurrent Sensor Device 失效降低光电流传感器和光电流传感器设备温度依赖误差的方法公开(公告)号：US20070273358A1
公开(公告)日：2007-11-29
申请号：US11574249
申请日：2005-08-17
IPC分类号： G01R15/24
CPC分类号： G01R15/246 , G01R19/32
摘要： [Problem] To permit reduction in the temperature dependence of a sensor, which is ascribable to the temperature dependence of the Verdet constant of a sensor fiber, at a low cost. [Means for Resolution] In a prior-art optical sensor fiber of reflection type, reduction in the temperature dependence of a sensor is coped with by, e.g., duplexing a signal processing circuit and a receiving optical system, so as to execute the mean processing of modulation signals, whereas in this invention, the elimination of the temperature dependence of a modulation signal is realized by selecting a ferromagnetic Faraday rotor 13 so that a modulation degree (Sout) expressed by the ratio between an AC component and a DC component may become constant or within a certain range, so as to especially simplify a configuration and to attain a lower cost.
摘要翻译： 为了降低传感器的温度依赖性，能够以低成本降低传感器光纤的Verdet常数的温度依赖性。 [解决方法]在现有的反射型光传感器光纤中，通过例如双工信号处理电路和接收光学系统来应对传感器的温度依赖性的降低，以便执行平均处理 的调制信号，而在本发明中，通过选择铁磁法拉第转子13来实现调制信号的温度依赖性的消除，使得由一个调制信号之间的比率表示的调制度（S OUT） AC分量和DC分量可能变得恒定或在一定范围内，以便特别简化配置并获得更低的成本。
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4.发明授权Method for reducing temperature-dependent error in photocurrent sensor, and photocurrent sensor device 失效降低光电流传感器温度依赖误差的方法和光电流传感器公开(公告)号：US07589515B2
公开(公告)日：2009-09-15
申请号：US11574249
申请日：2005-08-17
CPC分类号： G01R15/246 , G01R19/32
摘要： [Problem] To permit reduction in the temperature dependence of a sensor, which is ascribable to the temperature dependence of the Verdet constant of a sensor fiber, at a low cost.[Means for Resolution] In a prior-art optical sensor fiber of reflection type, reduction in the temperature dependence of a sensor is coped with by, e.g., duplexing a signal processing circuit and a receiving optical system, so as to execute the mean processing of modulation signals, whereas in this invention, the elimination of the temperature dependence of a modulation signal is realized by selecting a ferromagnetic Faraday rotor 13 so that a modulation degree (Sout) expressed by the ratio between an AC component and a DC component may become constant or within a certain range, so as to especially simplify a configuration and to attain a lower cost.
摘要翻译： 为了降低传感器的温度依赖性，能够以低成本降低传感器光纤的Verdet常数的温度依赖性。 [解决方法]在现有的反射型光传感器光纤中，通过例如双工信号处理电路和接收光学系统来应对传感器的温度依赖性的降低，以便执行平均处理 的调制信号，而在本发明中，通过选择铁磁法拉第转子13来实现调制信号的温度依赖性的消除，使得由AC分量和DC分量之间的比率表示的调制度（Sout）可以变为 恒定或在一定范围内，以便特别简化配置并获得更低的成本。
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公开(公告)号：US20090212763A1
公开(公告)日：2009-08-27
申请号：US11817958
申请日：2006-03-01
IPC分类号： G01R31/00
CPC分类号： G01R15/247
摘要： [Object] A simple constitution together with an easy calibration of output by realizing a fast light intensity detection method is realized without using the carrier signal.[Solution] An optical sensor, including: a sensor to which light from a light source is lead, and by which light intensity of the light is modulated based on a physical value; light receiving elements 61 and 62 receiving two elements of divided light PA and PB having polarized waves which are orthogonally crossing each other; a variable optical attenuator operating light which is received by the light receiving elements 61 and 62; and a variable amplifier operating output signals from the light receiving elements 61 and 62, wherein both a zero point of a sensor output and sensitivity are calibrated based on a light attenuation factor or an amplification factor which is adjusted when a physical value is detected by calculating a ratio between a sum and a difference of outputs of the light receiving elements 61 and 62.
摘要翻译： 通过实现快速的光强度检测方法，可以实现简单的结构以及简单的输出校准，而不使用载波信号。 [解决方案]一种光学传感器，包括：来自光源的光引导的传感器，并且基于物理值调制光的光强度; 光接收元件61和62接收具有彼此正交交叉的偏振波的分割光PA和PB的两个元件; 由光接收元件61和62接收的可变光衰减器操作光; 以及来自光接收元件61和62的输出信号的可变放大器，其中传感器输出和灵敏度的零点都基于光衰减因子或当通过计算检测到物理值时调节的放大系数来校准 光接收元件61和62的输出的和之和的比率。
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6.发明申请INTENSITY MODULATION TYPE OPTICAL SENSOR AND OPTICAL CURRENT / VOLTAGE SENSOR 失效强度调制型光电传感器和光电流/电压传感器公开(公告)号：US20090090842A1
公开(公告)日：2009-04-09
申请号：US11817955
申请日：2006-03-01
IPC分类号： G01J1/32
CPC分类号： G01R15/247
摘要： An influence on a sensor output is suppressed to a minimum degree even in the case when there is a ripple in a light source, thereby improving the measurement accuracy.In an intensity modulation type optical sensor, light from a light source 1 is guided to a sensor head 6, the intensity of the light is modulated on the basis of an alternating current (AC) measured object (for example, a current i) changing with time, the modulated light is received in a light receiving element 81 and converted into an electrical signal, and a normalized received signal Xs indicating a degree of modulation is acquired from a ratio of an AC component As and a DC component Ds of the electrical signal to thereby acquiring a value of the AC measured object. Further in this invention, a reference signal Vr is acquired by separating and receiving part of light incident on the sensor head 6, a normalized reference signal Xr is acquired from a ratio of an AC component Ar and a DC component Dr of the reference signal, and the normalized reference signal Xr is subtracted from the normalized received signal Xs, thereby reducing noises and improving the accuracy.
摘要翻译： 即使在光源中存在纹波的情况下，对传感器输出的影响也被抑制到最小程度，从而提高了测量精度。 在强度调制型光学传感器中，来自光源1的光被引导到传感器头6，基于交流（AC）测量对象（例如，电流i）的变化来调制光的强度 随着时间的推移，调制光被接收在光接收元件81中并被转换为电信号，并且从交流分量As和电气的直流分量Ds的比率中获取表示调制度的归一化接收信号Xs 信号，从而获得AC测量对象的值。 此外，在本发明中，通过分离和接收入射在传感器头6上的一部分光获取参考信号Vr，从参考信号的AC分量Ar和DC分量Dr的比率获取归一化参考信号Xr， 并且从归一化接收信号Xs中减去归一化参考信号Xr，从而减少噪声并提高精度。
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