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公开(公告)号：US5768062A
公开(公告)日：1998-06-16
申请号：US802467
申请日：1997-02-19
IPC分类号： G11B33/12 , G11B5/31 , G11B5/41 , G11B5/60 , G11B19/04 , G11B21/02 , G11B21/21 , G11B23/50 , G11B5/48 , G11B5/55
CPC分类号： G11B5/6005 , G11B5/3106 , G11B19/04 , G11B23/505 , G11B5/314 , G11B5/41
摘要： A disk drive having a pair of axially spaced disks has a rotary actuator/head assembly in which a single rigid actuator arm projects between the axially spaced disks. A gimbal spring is mounted to each surface of the opposite surfaces at one distal end of the rigid actuator arm. Each gimbal spring mounts a slider having a magnetic head, the individual magnetic heads confronting the respective disk surfaces. The proximal ends of respective cantilever load springs are mounted to opposite surfaces of the rigid arm and their distal ends engage and spring bias the respective sliders against the respective disk surfaces. A printed circuit coil on one or both surfaces of the other distal end of the rigid actuator arm is the armature of an axial gap actuator motor, having a permanent magnet stator. Printed circuit traces mounted to the rigid actuator arm connect the printed circuit coil to bonding pads of a group of bonding pads on the rigid actuator arm at a location on the rigid actuator arm adjacent the axis of rotation. Other printed circuit traces mounted to the gimbal springs and to the rigid arm, connect the respective magnetic heads to other bonding pads of the group of bonding pads. Individual circuits of a flat flexible cable are connected to respective bonding pads for coupling electrical signals to and from said magnetic heads and for coupling bi-polar direct current to said printed circuit coil.
摘要翻译： 具有一对轴向间隔开的盘的盘驱动器具有旋转致动器/头组件，其中单个刚性致动器臂在轴向间隔开的盘之间伸出。 在刚性致动器臂的一个远端处，将万向弹簧安装到相对表面的每个表面上。 每个万向节弹簧安装具有磁头的滑块，各个磁头面对相应的磁盘表面。 各个悬臂装载弹簧的近端安装在刚性臂的相对表面上，并且它们的远端接合并弹簧将相应的滑块偏压抵靠各个盘表面。 在刚性致动器臂的另一远端的一个或两个表面上的印刷电路线圈是具有永磁体定子的轴向间隙致动器电动机的电枢。 安装到刚性致动器臂的印刷电路迹线将刚性致动器臂上的一组接合焊盘的印刷电路线圈连接到邻近旋转轴线的刚性致动器臂上的位置。 安装到万向弹簧和刚性臂的其它印刷电路迹线将相应的磁头连接到该组焊盘的其它接合焊盘。 扁平柔性电缆的单独电路连接到相应的接合焊盘，用于将电信号耦合到所述磁头和从所述磁头耦合，并将双极直流电耦合到所述印刷电路线圈。
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公开(公告)号：US10102473B1
公开(公告)日：2018-10-16
申请号：US15702640
申请日：2017-09-12
摘要： Digitized images of the propagated waveforms returned by Time-Domain (TD) sensors reveal the effects of bound water in soil samples, causing errors in the volumetric water content reported for samples due to soil type. Pattern analysis yields not only correct volumetric water content values but also the soil type from which the waveform was taken. Collection and analysis of waveforms from soils having precisely known properties yield computer-generated algorithms to improve the accuracy and number of reporting variables for integrated TD sensors. These algorithms can be deployed in the Cloud for external analysis, or can be incorporated within the sensor to report highly accurate readings of water content, conductivity and soil type under all conditions of these variables with no interpretive burden placed on the user of the sensor. Machine learning algorithms are intended to externally augment data measured by these sensors, or can be added to similar sensors.
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公开(公告)号：US07068051B2
公开(公告)日：2006-06-27
申请号：US10905417
申请日：2005-01-03
申请人： Scott K. Anderson
发明人： Scott K. Anderson
CPC分类号： G01N33/246
摘要： Narrow pulses transmitted wirelessly from a transmitting antenna to a receiving antenna are used to measure the electrical permittivity of the medium of interest between the two antennas. Timing signals are transmitted along a shielded transmission line coincident with the wireless transmission through the medium. The received waveform is digitized in the time domain and analyzed to determine the propagation time. The effects of dispersion caused by the conductive and dielectric properties of the medium on the transmitted waveform are overcome through analysis of the digitized waveform, resulting in an accurate measurement of the propagation time and thus the permittivity of the medium, from which volumetric moisture content may be derived.
摘要翻译： 使用从发射天线到接收天线无线发送的窄脉冲来测量两个天线之间的感兴趣介质的介电常数。 定时信号沿着与通过介质的无线传输一致的屏蔽传输线传输。 接收到的波形在时域被数字化，并进行分析以确定传播时间。 通过分析数字化波形来克服介质导电和介电性质对传输波形的影响，从而精确测量传播时间，从而准确测量介质的介电常数，从而可以从中体积含水量 被派生。
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4.发明授权Recording/reproducing device employing device housing and printed circuit board and electronics as structural and functional part of media drive motor and the media drive motor 失效采用设备外壳和印刷电路板和电子设备作为介质驱动电机和介质驱动电机的结构和功能部件的记录/再现装置
公开(公告)号：US5392176A
公开(公告)日：1995-02-21
申请号：US97812
申请日：1993-07-26
申请人： Scott K. Anderson
发明人： Scott K. Anderson
CPC分类号： G11B33/121 , G11B19/2009 , G11B25/043
摘要： A disk drive in which the disk spindle motor for a rotatable recording/reproducing media has a printed circuit stator winding on a printed circuit board within the disk drive housing, fitted between axially spaced circular flanges of a bobbin-shaped motor rotor. Alternately poled, equally circumferential spaced, axial permanent magnet fields between the axially spaced circular flanges link radially disposed printed circuit winding sections. Electronic elements on the printed circuit board are linked internally of the housing with the magnetic head and the actuator motor winding which powers the actuator for moving the magnetic head to different radial locations on the rotatable media. Bi-polar energization of the stator winding of the disk spindle motor is under the control of a commutating circuit controlled by a Hall sensor linked by the axial permanent magnet fields. Motor speed control is achieved by controlling the voltage level of the commutating circuit or by controlling the duty cycle of the voltage coupled to the stator winding. The disk drive design integrates the disk drive housing and the printed circuit assembly and its electronics with the disk spindle motor within the disk drive housing.
摘要翻译： 一种盘式驱动器，其中用于可旋转记录/再现介质的盘主轴电机具有在盘驱动器壳体内的印刷电路板上的印刷电路定子绕组，其装配在线轴形电机转子的轴向间隔开的圆形凸缘之间。 在轴向间隔开的圆形凸缘之间的交替极化，等周向间隔的轴向永久磁场将径向布置的印刷电路绕组部分连接起来。 印刷电路板上的电子元件与壳体内部与磁头和致动器电动机绕组相连，致动器电动机绕组为致动器供电，用于将磁头移动到可旋转介质上的不同径向位置。 圆盘主轴电动机的定子绕组的双极通电由通过由轴向永久磁场相连的霍尔传感器控制的换向电路控制。 通过控制整流电路的电压电平或通过控制耦合到定子绕组的电压的占空比来实现电动机速度控制。 磁盘驱动器设计将磁盘驱动器外壳和印刷电路组件及其电子设备与磁盘驱动器外壳中的磁盘主轴电机集成。
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公开(公告)号：US08947102B1
公开(公告)日：2015-02-03
申请号：US13404491
申请日：2012-02-24
IPC分类号： G01R27/04
CPC分类号： G01N33/246 , G01N27/223
摘要： Soil water content and bulk electrical conductivity may be determined by time domain reflectometry at multiple depths in the soil such that the entire soil profile from the surface to a user-selected depth may be characterized. A short rise-time pulse is passed into an electrode and the reflected pulse is captured at multiple times. A waveform of reflection coefficient versus time is determined, which may be used to determine the pulse travel time, effective frequency and reflection coefficients at times necessary for the determination of the soil water content and bulk electrical conductivity.
摘要翻译： 土壤水含量和体电导率可以通过土壤中多个深度的时域反射测定来确定，从而可以表征从表面到用户选择深度的整个土壤剖面。 短的上升时间脉冲进入电极，反射的脉冲被多次捕获。 确定反射系数对时间的波形，其可用于确定测定土壤含水量和体电导率所需的时间的脉冲行进时间，有效频率和反射系数。
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6.发明授权公开(公告)号：US06831468B2
公开(公告)日：2004-12-14
申请号：US10659645
申请日：2003-09-10
IPC分类号： G01R2726
CPC分类号： G01N33/246
摘要： Methods and apparatuses are described for detecting volumetric moisture content and conductivity in various media based on a time-domain reflectometry (TDR) system wherein successive fast transitions are injected into a transmission line immersed in a medium of interest, and a characteristic received waveform is digitized and analyzed by continuously sampling multiple received waveforms at short time intervals. One method transmits a timing signal along a shielded transmission line while a coincident signal is transmitted through the medium of interest. Another method propagates the waveform along a transmission line, that may be either shorted or open-ended, and observes a reflected, rather than transmitted, waveform with a receiver connected to the same end of the transmission line as the transmitter. The effects of dispersion caused by the conductive and dielectric properties of the medium on the waveform in an unshielded transmission line are extrapolated by detecting the bulk propagation time and the slope of the distorted rising edge of the characteristic received waveform. Absolute volumetric moisture percentage is inferred from propagation time, and absolute conductivity is inferred from the maximum slope value of the distorted rising edge of the characteristic received waveform.
摘要翻译： 描述了用于基于时域反射（TDR）系统检测各种介质中的体积水分含量和电导率的方法和装置，其中将连续的快速跃迁注入浸入感兴趣的介质中的传输线，特征接收波形被数字化 并以短时间间隔连续采样多个接收波形进行分析。 一种方法是沿着屏蔽传输线发送定时信号，同时通过感兴趣的介质发送一致的信号。 另一种方法沿着传输线传播波形，其可以是短路的或开路的，并且观察到反射的而不是发射的波形，其中接收器连接到与发射机的传输线的同一端。 通过检测体积传播时间和特征接收波形的失真上升沿的斜率，外推了介质导电和介质特性对非屏蔽传输线上波形的影响。 绝对体积湿度百分比是从传播时间推断的，绝对电导率是根据特征接收波形失真上升沿的最大斜率推断的。
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公开(公告)号：US4013840A
公开(公告)日：1977-03-22
申请号：US595100
申请日：1975-07-11
申请人： Scott K. Anderson
发明人： Scott K. Anderson
摘要： A plurality of communicating stations have transmitters, receivers and control means. The transmitters are tunable across a broad radio frequency spectrum and transmit an amplitude modulated selected carrier frequency. Each receiver is set to receive only one preselected amplitude modulated carrier frequency fixed and identified with each particular station. Stations may be regarded as telephones having signaling means and a chassis. The control means includes means to receive TDM control signals from and to supply TDM control signals to a remote common equipment unit. The control signals and amplitude modulated carriers are sent and received over common cabling. The common equipment unit includes processor means to process and generate control signals and means to interface with an external telephone system.
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公开(公告)号：US08285503B1
公开(公告)日：2012-10-09
申请号：US13305363
申请日：2011-11-28
申请人： Scott K. Anderson
发明人： Scott K. Anderson
摘要： The described apparatus and methods use Time Domain Reflectometry (TDR) to determine the absolute volumetric moisture content of various media. The effects of dispersion caused by conductive and dielectric properties of the medium on the waveform are extrapolated by detecting the bulk propagation time and the slope of the distorted transition of the characteristic reflected waveform. Fast transitions are injected by a differential step function generator into a two-conductor waveguide, which is immersed in soil or other medium of interest. Unlike previous single-ended TDR systems, a differential digitizer senses the probes. Timing control between the two digitizers is critical. Use of an integrated fully differential system eliminates the need for a coaxial cable and an associated balancing transformer, or balun. This enables a two-conductor probe that is more easily inserted into soil, rather than requiring three conductors. Non-conductive probe tips may be pointed to facilitate insertion without causing measurement ambiguity.
摘要翻译： 所描述的装置和方法使用时域反射计（TDR）来确定各种介质的绝对体积含水量。 通过检测体积传播时间和特征反射波形的失真转变的斜率，外推了由介质导电和介质特性引起的色散对波形的影响。 快速跃迁由差分步进函数发生器注入到双导体波导中，该导体波导浸入土壤或其他感兴趣的介质中。 与以前的单端TDR系统不同，差分数字化仪感测探头。 两个数字化仪之间的时序控制至关重要。 使用集成的全差分系统不需要同轴电缆和相关的平衡变压器或平衡 - 不平衡转换器。 这使得能够更容易地插入土壤中的双导体探针，而不需要三根导体。 非导电探针尖端可以指向以便于插入而不引起测量模糊。
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公开(公告)号：US07562832B1
公开(公告)日：2009-07-21
申请号：US12015988
申请日：2008-01-17
申请人： Scott K. Anderson
发明人： Scott K. Anderson
CPC分类号： A01G25/167 , Y10T137/189
摘要： An absolute moisture sensor is coupled to a controller circuit with the combination being integrated into a single device as a moisture-activated switch. The resultant switch is coupled in series with a power control line of a moisture-controlling device and can be placed within the medium for which moisture is to be controlled. In one typical use, the switch is buried in soil for control of valves that supply irrigation water. Since the moisture sensor is selected to provide an absolute reading of moisture, the switch programs itself when power from an external source is first applied. A communication protocol provides for readout of sensor values and allows for a remote reset of the controller.
摘要翻译： 绝对水分传感器耦合到控制器电路，其组合被集成到单个设备中作为水分激活的开关。 所得开关与湿气控制装置的功率控制线串联耦合，并且可以放置在要控制湿气的介质内。 在一个典型的用途中，开关被埋在土壤中，用于控制供应灌溉水的阀门。 由于选择湿度传感器以提供绝对读数的湿度，所以当首次施加来自外部源的电源时，开关自行编程。 通信协议提供传感器值的读出并允许控制器的远程复位。
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公开(公告)号：US07091830B2
公开(公告)日：2006-08-15
申请号：US10688190
申请日：2003-10-16
IPC分类号： G05B11/01
CPC分类号： G01N22/04 , G01N25/56 , Y10T137/189
摘要： A combination of frequency and time division multiplexed signals communicates using bursts of higher frequency sinusoidal waves superimposed upon the alternating current in a two-wire power distribution network. A synchronization pattern precedes data, all bursts having the same frequency to overcome problems caused by varying reactances, and all bursts being confined within negative half-cycles of the AC power. Such networks minimize the amount of wire needed to connect large numbers of devices to a common controller while covering large distances, and requiring no particular connection pattern or terminations, whether near the surface, above ground, or in deep earth wells. In an irrigation system they accommodate at once solenoid valves and distributed environmental sensors. Landscape changes that would otherwise require new wiring to accommodate new irrigation zones are facilitated by merely tapping into the two-wire communications lines at the nearest accessible point. Outdoor lighting controls and security sensors are easily accommodated.
摘要翻译： 频率和时分复用信号的组合使用叠加在双线配电网络中的交流电流上的较高频率正弦波的脉冲串。 同步模式在数据之前，所有突发具有相同的频率，以克服由变化的电抗引起的问题，并且所有脉冲串被限制在AC功率的负半周期内。 这样的网络最大限度地减少了将大量设备连接到公共控制器同时覆盖较大距离所需的电线量，并且不需要特定的连接模式或终端，无论是靠近地面，地面还是在深水井。 在灌溉系统中，它们可以容纳一次电磁阀和分布式环境传感器。 通过仅在最近的可接近点进入双线通信线路，便于通过新的布线来适应新的灌溉区域的景观变化。 户外照明控制和安全传感器易于安装。
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