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1.发明授权
公开(公告)号：US5336994A
公开(公告)日：1994-08-09
申请号：US979655
申请日：1992-11-20
申请人： Neil C. Griffen , Mark Ayzenberg
发明人： Neil C. Griffen , Mark Ayzenberg
CPC分类号： G01P1/00 , G01P3/487 , Y10T29/49002
摘要： A tachometer assembly for monitoring the rotation of an output shaft for measuring the rotational velocity and position of rotating shafts, and more specifically, to a magneto-resistive tachometer assembly which incorporates a dual purpose cover which, during normal use, fits over the tachometer drum and electronic sensor package to give physical protection to the unit. In a shipping mode, however, the cover is reversed and performs the function of an alignment tool in that a radial gap between the magnetic drum and magneto-resistive sensor may be preset at the factory during assembly of the unit. Reversal of the cover to its normal in use position is done in such a way that the preset radial gap is undisturbed.
摘要翻译： 一种用于监测用于测量旋转轴的旋转速度和位置的输出轴的旋转的转速计组件，更具体地，涉及一种磁阻转速计组件，该组合包括双重用途的盖，其在正常使用期间装配在转速计鼓 和电子传感器封装，为本机提供物理保护。 然而，在运送模式下，盖子被反转并执行对准工具的功能，因为在组装单元期间，可以在出厂时预先设定磁鼓和磁阻传感器之间的径向间隙。 盖子的正常使用位置的倒转是以预设的径向间隙不受干扰的方式进行的。
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公开(公告)号：US5076375A
公开(公告)日：1991-12-31
申请号：US523253
申请日：1990-05-14
申请人： Benny N. Dillon , Neil C. Griffen , Mark E. Weihs
发明人： Benny N. Dillon , Neil C. Griffen , Mark E. Weihs
CPC分类号： G01G3/18 , B66C23/48 , G01G3/1406
摘要： A digital load cell includes a rocker pin, guided beam torsion ring or other counterforce, a circuit board mounted on the counterforce and an enclosure sealing the circuit board and all but the load bearing surfaces of the counterforce. The circuit board includes an A/D converter and a micrcomputer. Digital communication is provided with the circuit board through a connector mounted on the enclosure. Weight data are corrected digitally. The load cell may be calibrated, characterized, controlled and monitored digitally through the connector from a remote location without physically penetrating the enclosure. One or a number of digital load cells may be connected to a computer or controller to form one or more weighing scales.
摘要翻译： 数字测力传感器包括摇杆，导向梁扭转环或其他反作用力，安装在反作用力上的电路板和密封电路板以及反作用力的所有承载表面的外壳。 电路板包括A / D转换器和微计算机。 数字通信通过安装在外壳上的连接器与电路板一起提供。 数字校正重量数据。 负载传感器可以通过连接器从远程位置进行数字校准，表征，控制和监控，而不会实际穿透外壳。 一个或多个数字称重传感器可以连接到计算机或控制器以形成一个或多个称重秤。
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公开(公告)号：US5680042A
公开(公告)日：1997-10-21
申请号：US366580
申请日：1994-12-30
申请人： Neil C. Griffen , Richard S. Stokes
发明人： Neil C. Griffen , Richard S. Stokes
摘要： A magnetoresistive sensor for use in a rotary encoder having a drum having a circumference covered with a magnetic track at a predetermined pitch includes a plurality of magnetoresistive elements positioned opposite the drum and connected in a bridge circuit such that when the drum rotates an output signal from the bridge indicates a rotary angle of the drum. The magnetoresistive elements include one or more complementary pairs of elements positioned 180.degree. out of phase. Each of such pair of complementary magnetoresistive elements is connected in one leg of a bridge circuit such that jitter effects caused by asymmetric magnetic fields and physical differences between sensor elements are cancelled.
摘要翻译： 一种用于旋转编码器的磁阻传感器，其具有以具有预定间距的磁道覆盖的圆周的滚筒，包括多个磁阻元件，该磁阻元件与滚筒相对设置，并连接在桥接电路中，使得当滚筒旋转输出信号时 桥表示滚筒的旋转角度。 磁阻元件包括一个或多个位于相位180度的互补元件对。 这种互补磁阻元件中的每一个连接在桥式电路的一个支路中，从而消除由不对称磁场引起的抖动效应和传感器元件之间的物理差异。
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公开(公告)号：US4815547A
公开(公告)日：1989-03-28
申请号：US126272
申请日：1987-11-30
申请人： Benny N. Dillon , Neil C. Griffen , Mark E. Weihs
发明人： Benny N. Dillon , Neil C. Griffen , Mark E. Weihs
CPC分类号： G01G3/1406 , G01G3/18
摘要： A digital load cell includes a rocker pin, guided beam, torsion ring or other counterforce, a circuit board mounted on the counterforce and an enclosure sealing the circuit board and all but the load bearing surfaces of the counterforce. The circuit board includes an A/D converter and a microcomputer. Digital communication is provided with the circuit board through a connector mounted on the enclosure. Weight data are corrected digitally. The load cell may be calibrated, characterized, controlled and monitored without physically penetrating the enclosure. One or a number of digital load cells may be connected to a computer or controller to form one or more weighing scales.
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公开(公告)号：US4691290A
公开(公告)日：1987-09-01
申请号：US638272
申请日：1984-08-06
申请人： Neil C. Griffen
发明人： Neil C. Griffen
CPC分类号： G01G23/01 , G01G23/16 , G01G23/3714 , G01G3/1414
摘要： A digital scale compensated for creep by first obtaining and storing a mathematical representation of creep as a function of time for the particular scale. The current "creep state" of the scale is continually calculated, stored and used to correct the current weight indication for creep. The current creep state is obtained by calculating the increment of creep since the previous determination of creep state and combining it with the stored previous creep state.
摘要翻译： 通过首先获得并存储蠕变的数学表示作为特定刻度的时间的函数，数字刻度补偿了蠕变。 秤的当前“蠕变状态”被持续计算，存储并用于纠正当前的爬行重量指示。 通过计算自先前确定蠕变状态并将其与存储的先前蠕变状态组合的蠕变增量计算得到当前蠕变状态。
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公开(公告)号：US06300758B1
公开(公告)日：2001-10-09
申请号：US09452450
申请日：1999-12-02
申请人： Neil C. Griffen , Richard S. Stokes
发明人： Neil C. Griffen , Richard S. Stokes
IPC分类号： G01B714
摘要： A magnetoresistive sensor for use in detecting relative motion between the sensor and a further object bearing an alternating pattern of north/south magnetic poles. The sensor includes one or more pairs of magnetoresistive elements positioned so that each element within a pair magnetically complements the corresponding element in that pair. That is, whenever an element is exposed to a north pole of the magnetic pattern, a corresponding complementary element is exposed to a south pole so as to provide a magnetically complemented output. Such pair of complementary magnetoresistive elements are connected into a bridge circuit such that jitter effects caused by asymmetric magnetic fields and physical differences between sensor elements are cancelled. The quadrature sensor output is frequency multiplied to provide frequency multiplied output signals in quadrature. The sensing arrangement can be used, for example, in the context of a rotary encoder having a drum having a circumference covered with a magnetic track at a predetermined pitch, and may include a plurality of magnetoresistive elements positioned opposite the drum and connected in a bridge circuit such that when the drum rotates an output signal from the encoder indicates rotary motion of the drum.
摘要翻译： 一种磁阻传感器，用于检测传感器与另一个物体之间的相对运动，该对象承载着北/南磁极的交替图案。 该传感器包括一对或多对磁阻元件，其定位成使得一对中的每个元件与该对中的相应元件磁性地相互补充。 也就是说，每当元件暴露于磁性图案的北极时，相应的互补元件暴露于南极，以便提供磁性补充的输出。 这种互补磁阻元件被连接到桥式电路中，从而消除由不对称磁场引起的抖动效应和传感器元件之间的物理差异。 正交传感器输出频率相乘以提供正交的倍频输出信号。 感测装置可以用于例如在旋转编码器的上下文中，旋转编码器具有以预定间距以磁道覆盖的圆周的滚筒，并且可以包括多个位于滚筒相对并连接在桥中的磁阻元件 电路使得当滚筒旋转时，来自编码器的输出信号指示滚筒的旋转运动。
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7.发明授权Magneto-resistive tachometer sensor module with different resolution outputs for the same magnetic drum 失效磁阻式转速计传感器模块，具有不同分辨率的输出，用于同一磁鼓
公开(公告)号：US5654633A
公开(公告)日：1997-08-05
申请号：US435267
申请日：1995-05-05
摘要： A tachometer for monitoring the rotation of an output shaft (e.g. of a motor, where the motor is enclosed within a standard NEMA housing), includes an enclosure (e.g. adapted to be secured to an end plate of the motor housing), the enclosure having a radial center and a longitudinal axis which, when the enclosure is secured to the housing, are aligned with a longitudinal axis of the output shaft. The enclosure has at least one mounting surface in a peripheral wall portion thereof, the mounting surface having an aperture formed therein which opens in a radial direction. A sensor module including a pair of axially aligned magneto-resistive sensors is mountable on the mounting surface of the enclosure such that the module protrudes through the aperture with the sensors facing radially inwardly. An annular drum having a pair of magnetic patterns arranged on a peripheral end surface thereof is operatively fixed on the motor output shaft via a hub member such that the magnetic patterns on the drum are automatically aligned with the sensors and radially spaced therefrom by a predetermined radial gap when the drum is fixed to the output shaft and the enclosure is mounted on the end plate in an operatively assembled relationship.
摘要翻译： 用于监测输出轴（例如马达封闭在标准NEMA外壳内的马达）的旋转的转速计包括外壳（例如适于固定在马达外壳的端板上），外壳具有 径向中心和纵向轴线，当外壳固定到壳体时，其与输出轴的纵向轴线对准。 所述外壳在其周壁部分具有至少一个安装表面，所述安装表面具有形成在其中的径向方向开口的孔。 包括一对轴向对准的磁阻传感器的传感器模块可安装在外壳的安装表面上，使得模块通过孔径突出，传感器面向径向向内。 具有布置在其周边端面上的一对磁性图案的环形鼓通过轮毂构件可操作地固定在马达输出轴上，使得滚筒上的磁性图案与传感器自动对准并且与其径向间隔开预定径向 当滚筒固定到输出轴并且外壳以可操作地组装的关系安装在端板上时的间隙。
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8.发明授权Self-aligning tachometer with interchangeable elements for different resolution outputs 失效具有可互换元件的自调心转速计，用于不同的分辨率输出
公开(公告)号：US5293125A
公开(公告)日：1994-03-08
申请号：US822016
申请日：1992-01-17
摘要： A tachometer for monitoring the rotation of an output shaft (e.g. of a motor, where the motor is enclosed within a standard NEMA housing), includes an enclosure (e.g. adapted to be secured to an end plate of the motor housing), the enclosure having a radial center and a longitudinal axis which, when the enclosure is secured to the housing, are aligned with a longitudinal axis of the output shaft. The enclosure has at least one mounting surface in a peripheral wall portion thereof, the mounting surface having an aperture formed therein which opens in a radial direction. A sensor module including a pair of axially aligned magneto-resistive sensors is mountable on the mounting surface of the enclosure such that the module protrudes through the aperture with the sensors facing radially inwardly. An annular drum having a pair of magnetic patterns arranged on a peripheral end surface thereof is operatively fixed on the motor output shaft via a hub member such that the magnetic patterns on the drum are automatically aligned with the sensors and radially spaced therefrom by a predetermined radial gap when the drum is fixed to the output shaft and the enclosure is mounted on the end plate in an operatively assembled relationship.
摘要翻译： 用于监测输出轴（例如马达封闭在标准NEMA外壳内的马达）的旋转的转速计包括外壳（例如适于固定在马达外壳的端板上），外壳具有 径向中心和纵向轴线，当外壳固定到壳体时，其与输出轴的纵向轴线对准。 所述外壳在其周壁部分具有至少一个安装表面，所述安装表面具有形成在其中的径向方向开口的孔。 包括一对轴向对准的磁阻传感器的传感器模块可安装在外壳的安装表面上，使得模块通过孔径突出，传感器面向径向向内。 具有布置在其周边端面上的一对磁性图案的环形鼓通过轮毂构件可操作地固定在马达输出轴上，使得滚筒上的磁性图案与传感器自动对准并且与其径向间隔开预定径向 当滚筒固定到输出轴并且外壳以可操作地组装的关系安装在端板上时的间隙。
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公开(公告)号：US4799558A
公开(公告)日：1989-01-24
申请号：US61273
申请日：1987-06-12
申请人： Neil C. Griffen
发明人： Neil C. Griffen
CPC分类号： G01G23/01 , G01G3/1408 , G01G3/1412 , G01G7/06
摘要： A digital weighing scale is compensated for the effects of off-center loading by determining the position of the load and calculating a corrected weight value according to such position. Position sensing transducers are mounted on the load cell to provide information regarding the position of the load on the weighing scale. An expression for corrected weight as a function of load position and magnitude is determined for the particular scale and stored. The expression is used to calculate corrected weight according to the magnitude and position of each weight placed on the scale. The load cell may include a counterforce of substantially any type including single bending beam, dual bending beam or capacitive structure, and the load magnitude and position sensors may be of substantially any type including strain gages and capacitive sensors.
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10.发明授权Magnetoresistive sensor with reduced output signal jitter and temperature compensation 失效具有降低输出信号抖动和温度补偿的磁阻传感器公开(公告)号：US06246233B1
公开(公告)日：2001-06-12
申请号：US08863339
申请日：1997-05-27
申请人： Neil C. Griffen , Richard S. Stokes
发明人： Neil C. Griffen , Richard S. Stokes
IPC分类号： G01B730
摘要： A magnetoresistive sensor for use in a rotary encoder with a drum having a circumference covered with a magnetic track at a predetermined pitch includes a plurality of magnetoresistive elements positioned opposite the drum and connected in a bridge circuit such that when the drum rotates an output signal from the bridge indicates a rotary angle of the drum. The magnetoresistive elements include one or more complementary pairs of elements positioned 180° out of phase. Each of such pair of complementary magnetoresistive elements is connected in one leg of a bridge circuit such that jitter effects caused by asymmetric magnetic fields and physical differences between sensor elements are cancelled. Magnetoresistive sensor element configurations for minimizing the impact of temperature gradients across the magnetoresistive sensor are also disclosed.
摘要翻译： 用于旋转编码器的磁阻传感器，其具有以预定间距以磁道覆盖的圆周的滚筒，包括多个位于滚筒相对的磁阻元件，并连接在桥接电路中，使得当滚筒旋转输出信号时 桥表示滚筒的旋转角度。 磁阻元件包括位于180°异相位置的一个或多个互补元件对。 这种互补磁阻元件中的每一个连接在桥式电路的一个支路中，从而消除由不对称磁场引起的抖动效应和传感器元件之间的物理差异。 还公开了用于最小化跨越磁阻传感器的温度梯度的影响的磁阻传感器元件配置。
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