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公开(公告)号：US11432751B2
公开(公告)日：2022-09-06
申请号：US17399345
申请日：2021-08-11
摘要： According to one embodiment, a magnetic sensor includes a first magnetic element, a second magnetic element, a third magnetic element located between the first and second magnetic elements in a first direction, a fourth magnetic element located between the third and second magnetic elements in the first direction, a first conductive member, a second conductive member, a third conductive member located between the first and second conductive members in the first direction, a fourth conductive member located between the third and second conductive members in the first direction, a first magnetic member, a second magnetic member, a third magnetic member located between the first and second magnetic members in the first direction, a fourth magnetic member located between the third and second magnetic members in the first direction, and a fifth magnetic member located between the third and fourth magnetic members in the first direction.
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公开(公告)号：US10135200B2
公开(公告)日：2018-11-20
申请号：US15232416
申请日：2016-08-09
IPC分类号： G01R19/00 , H01R13/66 , H01R11/05 , G01R31/02 , G08C19/02 , G01R31/44 , H01R31/06 , G01R5/00 , H04L29/08 , H01R24/22 , H01R24/30 , H01R24/60 , H01B7/36 , G01R15/20
摘要： A platform embedded in an electrical cable that stores and transmits data or information related to the electrical cable is designed. The embedded platform includes a non-volatile memory element to store product data describing at least one of electrical characteristics and certifications of the electrical cable. The platform also includes a current detector to detect a current that flows in the electrical cable based on a magnetic field generated by the current. The platform further includes a communication circuit to transmit at least one of the stored product data and information related to the detection of the current to a remote device.
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公开(公告)号：US20110098952A1
公开(公告)日：2011-04-28
申请号：US12983530
申请日：2011-01-03
申请人： Avery Long , Ronald W. Carter
发明人： Avery Long , Ronald W. Carter
CPC分类号： G01R21/133 , G01R19/2513
摘要： A method of monitoring the electrical power in multiple branch circuits of an AC electrical power distribution system comprises monitoring at least one voltage common to said multiple branch circuits using a main meter unit, monitoring currents of the multiple branch circuits using multiple current cards that receive a plurality of current inputs from current transducers in the multiple branch circuits, sampling the monitored voltage in the main meter unit and the monitored currents in the current cards multiple times in each cycle of the AC power signal, determining the magnitudes and angles of spectral components of the sampled current in the current cards, sending data representing the magnitudes and angles of at least selected spectral components from the current cards to the main meter unit, and storing the voltage samples and the magnitudes and angles of at least the selected spectral components in the main meter unit.
摘要翻译： 一种监测交流配电系统的多个分支电路中的电力的方法包括使用主计量单元来监测所述多个分支电路公用的至少一个电压，使用接收 多个分支电路中的电流传感器的多个电流输入，在AC功率信号的每个周期中多次采样主计单元中监视的电压和当前卡中的监视电流，确定频谱分量的幅度和角度 当前卡中的采样电流，将表示至少所选频谱分量的幅度和角度的数据从当前卡发送到主计单元，并将至少所选频谱分量的电压样本和幅度和角度存储在 主仪表单元。
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公开(公告)号：US5221933A
公开(公告)日：1993-06-22
申请号：US723368
申请日：1991-06-28
摘要： A beam scanning galvanometer is disclosed which oscillates a mirror in a non-resonant mode. The moving parts of the galvanometer are made with as small a moment of inertia as possible because the mirror is oscillated in a non-resonant mode. The galvanometer uses two sets of crossed leaf-springs to support the mirror instead of bearings which are usually used in non-resonant galvanometers. Each of the sets of leaf-springs is formed of a single strip of cold rolled stainless steel. The springs are embedded in uniquely shaped cavities in a permanent magnet that supports the mirror at a distance very close to an axis of rotation of the mirror. The mirror is specially shaped with beveled edges so that its moment of inertia is low and so that it can oscillate in very close proximity to a driving current coil which surrounds the mirror supporting magnet. A magnetic position sensor is used to detect an angular position of the mirror during operation of the galvanometer. A compensating system eliminates distorting magnetic field effects from a magnetic driving system from adversely influencing the magnetic position sensor. Signals from the magnetic position sensor are usable to provide accurate feedback information to a galvanometer driving system.
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5.发明授权
公开(公告)号：US4223266A
公开(公告)日：1980-09-16
申请号：US948174
申请日：1978-10-02
申请人： Edward F. Scannell
发明人： Edward F. Scannell
摘要： Adjustment of an electrical measuring instrument of the D'Arsonval type is achieved by rotation of an annular leaf spring contact mounted to rotate between an annular plate and a flanged eyelet extending through the plate and leaf spring. A conducting coil spring attached to the spring contact transmits rotary orientation of the spring contact to an armature assembly disposed for rotation against the return force of the coil spring in an magnetic field.
摘要翻译： D'Arsonval型电气测量仪的调整是通过安装在环形板和延伸穿过板和板簧的法兰孔眼之间旋转的环形板簧接触件的旋转实现的。 附接到弹簧接触件的导电螺旋弹簧将弹簧触头的旋转取向传递到抵抗螺旋弹簧在磁场中的返回力旋转的衔铁组件。
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公开(公告)号：US4142149A
公开(公告)日：1979-02-27
申请号：US796272
申请日：1977-05-12
申请人： Julius Nador
发明人： Julius Nador
CPC分类号： G01R1/02 , G01D13/26 , G01R19/16576
摘要： A control meter is disclosed having a structural arrangement readily adaptable for usage as either a potentiometric or photoelectric type of instrument. Commonality of parts for the two types is maximized and only a few additions are required to operably complete the structure of either type.
摘要翻译： 公开了具有易于适用于电位计或光电式仪器的结构布置的控制计。 两种类型的部件的共同性最大化，只需要几个加法来可操作地完成任一类型的结构。
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公开(公告)号：US3588516A
公开(公告)日：1971-06-28
申请号：US3588516D
申请日：1968-07-23
发明人： FRIEDMAN JOEL S
摘要： A CONTROL METER RELAY HAVING ONE OR MORE SET POINTS, THE SET POINT CONTROLS EXTENDING CONCENTRICALLY FROM THE FRONT OF THE METER COAXIAL WITH THE AXIS OF ROTATION OF THE METER MOVEMENT, ALLOWING CONTROL OF THE SET POINTS FROM ONE LOCATION ON THE FRONT OF THE INSTRUMENT. ANOTHER FEATURE IS THAT THE ZERO ADJUSTMENT MEANS OF THE METER MOVEMENT MAY ALSO BE CONCENTRIC WITH THE SET POINT CONTROLS.
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公开(公告)号：US20220410792A1
公开(公告)日：2022-12-29
申请号：US17807089
申请日：2022-06-15
发明人： Ji Eung LEE
摘要： A headlamp leveling device and a headlamp leveling method. The headlamp leveling device may include a control voltage generator that generates a control voltage based on a width of a pulse, a control integrated circuit (IC) that controls a rotation direction of a motor by comparing a voltage level of a feedback voltage with a voltage level of the control voltage, a shaft position detector that generates a voltage corresponding to a position of the shaft moving with rotation of the motor, and a feedback voltage generator that generates the feedback voltage based on a voltage generated to correspond to the position of the shaft.
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公开(公告)号：US20200225066A1
公开(公告)日：2020-07-16
申请号：US16631000
申请日：2017-08-01
申请人： Siemens Energy, Inc.
摘要： A sensor for detecting an amount of current flowing in a wire wherein displacement of a sensing mirror is used in an interferometer to enable determination of the amount of current. The sensor includes a magnetostrictive element located within a magnetic field formed by the wire. The sensor also includes a position sensor that detects a size increase of the magnetostrictive element. In addition, the sensor includes an amplifying device that amplifies the size increase of the magnetostrictive element by a predetermined amplification factor to provide an amplified size increase. Further, the sensor includes a displacement device that displaces the sensing mirror by an amount corresponding to the amplified size increase.
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公开(公告)号：US06853162B2
公开(公告)日：2005-02-08
申请号：US10310370
申请日：2002-12-05
CPC分类号： H02P8/22 , G05B2219/39181 , G05B2219/41326 , H02P8/32
摘要： The present invention comprises a method and apparatus for driving and homing a stepper motor. In a preferred embodiment, 24 micro step pulse width modulated (PWM) voltage signals are used to drive the coils of the stepper motor. The phases between the driving signals are 90° out of phase. Thus, a sine/cosine methodology is used to drive the motor. Using micro-programmable pulse width modulation (PWM) levels involves the microprocessor reading stored voltage levels from a table stored in memory which corresponds to the amount of angular displacement desired by the motor. These voltage levels are then applied to the motor's coils. The microprocessor performs these operations by executing software instructions stored in memory. The software can be stored in memory located in the controller or in a separate logic block or logic chip. The magnitude of the bounce of a pointer attached to the output shaft of the motor and the magnitude of the noise generated as the pointer contacts a mechanical stop, are both directly related to the applied voltage and speed or frequency of the homing strategy. To reduce the bounce of the pointer and the generated noise to barely discernable levels, the applied voltage is reduced to between 15% and 30% of the normal driving voltage (approximately 1 volt for a 5 volt system). Additionally, the speed of homing is set to a value below the new start-stop frequency of the motor.
摘要翻译： 本发明包括用于驱动和归位步进电机的方法和装置。 在优选实施例中，使用24微步脉冲宽度调制（PWM）电压信号来驱动步进电机的线圈。 驱动信号之间的相位相差90°。 因此，使用正弦/余弦方法来驱动电动机。 使用微型可编程脉冲宽度调制（PWM）电平涉及微处理器从存储在存储器中的表中读取存储的电压电平，其对应于电动机所期望的角位移量。 然后将这些电压电平施加到电动机的线圈。 微处理器通过执行存储在存储器中的软件指令来执行这些操作。 软件可以存储在位于控制器或单独的逻辑块或逻辑芯片中的存储器中。 连接到电动机的输出轴上的指示器的反弹的大小以及当指示器接触机械停止时产生的噪声的大小都与所施加的电压和归位策略的速度或频率直接相关。 为了减少指针的反弹和产生的噪音几乎不能识别的水平，施加的电压降低到正常驱动电压的15％至30％（5伏系统约为1伏）。 此外，归位速度设定为低于电机新的起始 - 停止频率的值。
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