Extending the read range of passive RFID tags
    2.
    发明授权
    Extending the read range of passive RFID tags 有权
    扩展无源RFID标签的读取范围

    公开(公告)号:US08395525B2

    公开(公告)日:2013-03-12

    申请号:US12392736

    申请日:2009-02-25

    摘要: An embodiment of the present invention improves the efficiency of radio frequency identification (RFID) systems and helps to extend the effective read range for certain configurations of closely spaced RFID tags. Specifically, an embodiment helps to minimize energy losses that result when there is excess energy from the excitation source. This excess energy has the potential to damage the circuitry in RFID tags. A shunt regulator is often used to protect the RFID circuitry by clamping the voltage, but has the undesirable effect of converting this excess excitation energy into heat. Various embodiments are directed toward using only as much of the excitation energy as necessary to power the RFID circuitry. These embodiments include circuitry for a constant current power supply that can be implemented either with discrete components or built into a new ASIC design; a network that minimizes the amount of energy that is converted to heat by the shunt regulator built into many RFID circuits; and/or a sleep mode for reducing the energy consumed by an RFID tag after it has been read. An embodiment may have the benefit of making more of the excitation energy available to power other RFID tags nearby—thereby improving system performance and read range.

    摘要翻译: 本发明的一个实施例提高了射频识别(RFID)系统的效率,并且有助于扩展紧密间隔的RFID标签的某些配置的有效读取范围。 具体地,实施例有助于最小化当来自激发源的能量过剩时所产生的能量损失。 这种多余的能量有可能损坏RFID标签中的电路。 分流调节器通常用于通过钳位电压来保护RFID电路,但是具有将这种过量的激发能量转换成热量的不期望的效果。 各种实施例旨在仅使用必要的激励能量来为RFID电路供电。 这些实施例包括可以使用分立元件或内置于新的ASIC设计中的恒定电流电源的电路; 通过内置于许多RFID电路中的分流调节器将能量转化为最小化的网络; 和/或睡眠模式,用于降低RFID标签在读取之后所消耗的能量。 一个实施例可以有益于使更多的激励能量可用于为附近的其他RFID标签供电,从而提高系统性能和读取范围。

    ENHANCING THE EFFICIENCY OF ENERGY TRANSFER TO/FROM PASSIVE ID CIRCUITS USING FERRITE CORES
    3.
    发明申请
    ENHANCING THE EFFICIENCY OF ENERGY TRANSFER TO/FROM PASSIVE ID CIRCUITS USING FERRITE CORES 有权
    提高能源转移到使用铁饼的被动标识电路的效率

    公开(公告)号:US20090179741A1

    公开(公告)日:2009-07-16

    申请号:US12351774

    申请日:2009-01-09

    IPC分类号: H04Q5/22

    摘要: In one embodiment the present invention includes an RFID gaming token with a ferrite core. When the RFID gaming tokens are stacked, the ferrite cores steer the flux field from the excitation antenna through the center of the annular antennas in each token. The resulting flux field increases the efficiency of the energy transfer from the excitation antenna to the passive tags. This increased efficiency also improves the data transfer to and from the passive tags. This increased efficiency allows for reading RFID gaming tokens at a higher stack height (or at a better error rate for a given stack height) as compared to existing air core gaming tokens.

    摘要翻译: 在一个实施例中,本发明包括具有铁氧体磁芯的RFID游戏令牌。 当RFID游戏令牌堆叠时,铁氧体磁芯通过每个令牌中的环形天线的中心引导激励天线的磁场。 所产生的磁通场增加了从激励天线到无源标签的能量传递的效率。 这种提高的效率也改善了与无源标签之间的数据传输。 与现有的空中游戏令牌相比,这种增加的效率允许以更高的堆栈高度(或者给定堆栈高度的更好的错误率)读取RFID游戏令牌。

    Multiple axis data input apparatus and method employing positionable
electrode assemblies
    4.
    发明授权
    Multiple axis data input apparatus and method employing positionable electrode assemblies 失效
    多轴数据输入装置和采用可定位电极组件的方法

    公开(公告)号:US5959863A

    公开(公告)日:1999-09-28

    申请号:US122490

    申请日:1998-07-24

    IPC分类号: G05G9/047 G06F3/038 G05B9/02

    摘要: A multiple axis joystick employs positionable and fixed electrode assemblies having mutually orthogonal sets of spaced apart electrodes. The electrode spacings depend on the rotational and translational movements of the positional electrodes relative to the fixed electrodes. A signal generator applies an electromagnetic signal to one set of the electrodes. The signal is coupled to the closest associated electrodes of the other set of electrodes to a degree dependent on the rotation- and translation-induced spacings. A controller sequentially detects and processes each coupled signal voltage to determine a degree of deflection in the X-, Y-, Z-, roll-, pitch-, and yaw-axis directions of one set of the electrodes relative to the other set of electrodes.

    摘要翻译: 多轴操纵杆采用具有相互正交的间隔开的电极组的可定位和固定电极组件。 电极间距取决于位置电极相对于固定电极的旋转和平移运动。 信号发生器对一组电极施加电磁信号。 信号耦合到另一组电极的最靠近的相关电极,其程度取决于旋转和平移引起的间隔。 控制器顺序地检测和处理每个耦合的信号电压,以确定一组电极相对于另一组电极的X,Y,Z-,滚动,俯仰和偏航轴方向的偏转程度 电极。

    Multiple axis data input apparatus and method
    5.
    发明授权
    Multiple axis data input apparatus and method 失效
    多轴数据输入装置及方法

    公开(公告)号:US5687080A

    公开(公告)日:1997-11-11

    申请号:US492655

    申请日:1995-06-20

    IPC分类号: G05G9/047 G06F3/038 G06K11/18

    摘要: A six axis joystick (110) employs a 13 pole E-core (112) that includes a center pole (114) and four triads of outer poles (116, 118, 120, 122) that protrude from four orthogonally separated arms (124, 126, 128, 130) of the E-core. A drive winding (132) is wound around the center pole of the E-core, and sense windings (134, 136, 138, 140) are wound around each outer pole in each triad of outer poles. A compression spring (144) suspends a ferromagnetic swash plate (142) at substantially equal distances from the center pole and each of the outer poles. A user employs an actuator handle (148) to axially and rotationally deflect the swash plate to assume varying distances from the center pole and each of the outer poles. A varying magnetic flux induced by the center pole is conducted through the swash plate to each of the outer poles to a degree dependent on the spacing between each outer pole and a bottom surface (146) or a periphery (147) of the swash plate. Corresponding signal currents are induced in the sense windings. Each of the signal currents is proportional to the degree of magnetic flux flowing in its associated outer pole. A peak amplitude is detected for each signal current and the differences among the peak amplitudes are used to determine a degree of deflection of the swash plate in each of the X-, Y-, Z-, roll-, pitch-, and yaw-axis directions.

    摘要翻译: 六轴操纵杆(110)采用13极E型芯(112),其包括中心极(114)和从四个正交分离的臂(124,124)突出的四个三极管(16,118,120,122) 126,128,130)。 驱动绕组(132)缠绕在E型芯的中心极上,并且感测绕组(134,136,138,140)缠绕在每个三极管外极的每个外极上。 压缩弹簧(144)以与中心极和每个外极大致相等的距离悬挂铁磁旋转斜盘(142)。 用户使用致动器手柄(148)来轴向地和旋转地偏转斜盘,以假定与中心极和每个外极的变化的距离。 由中心极引起的变化的磁通量通过旋转斜盘传导到每个外极,其程度取决于每个外极与斜盘的底表面(146)或周边(147)之间的间隔。 在感应绕组中感应出相应的信号电流。 每个信号电流与在其相关外极中流动的磁通量成比例。 对于每个信号电流检测峰值振幅,并且使用峰值振幅之间的差异来确定斜盘在X,Y,Z,滚动,俯仰和偏航中每个中的偏转程度, 轴方向。

    Slack Rope and Lift Control For Use With Plow
    8.
    发明申请
    Slack Rope and Lift Control For Use With Plow 有权
    松紧绳索和电梯控制用于犁

    公开(公告)号:US20120138881A1

    公开(公告)日:2012-06-07

    申请号:US12961060

    申请日:2010-12-06

    IPC分类号: B66D1/56 B66D1/48

    CPC分类号: B66D1/505 E02F3/848

    摘要: A system for controlling slack in a winch rope associated with a vehicle can include a winch, a plow, and a support member pivotably coupled to the plow and carrying a pulley that receives the rope for raising and lowering the plow. A limit switch can be operatively associated with the winch and configured to selectively enable and disable lowering of the plow by the winch. A first member can be carried by the support member and operatively associated with the switch. A biasing member can bias the support member to a first position when a load on the winch rope is below a predetermined threshold. The first member can be in at least substantial alignment with the switch when in the first position. The switch can change an activation state upon the first member being in the first position to automatically disable lowering of the plow by the winch.

    摘要翻译: 用于控制与车辆相关联的绞车绳索松弛的系统可以包括绞盘,犁和支撑构件,其可枢转地联接到犁,并且承载接收用于升高和降低犁的绳索的滑轮。 限位开关可以与绞盘可操作地相关联并且被配置为选择性地启用和禁止由绞盘降低犁。 第一构件可以由支撑构件承载并且可操作地与开关相关联。 当绞盘绳上的负载低于预定阈值时,偏置构件可将支撑构件偏压到第一位置。 当处于第一位置时,第一构件可以与开关至少基本对准。 开关可以在第一构件处于第一位置时改变激活状态,以自动禁止由绞盘降低犁。

    Reaction, performance and response time testing system
    9.
    发明申请
    Reaction, performance and response time testing system 有权
    反应,性能和响应时间测试系统

    公开(公告)号:US20090129205A1

    公开(公告)日:2009-05-21

    申请号:US11732518

    申请日:2007-04-02

    IPC分类号: G04F10/00

    CPC分类号: A63B69/0053 A61B5/162

    摘要: An athletic performance measurement system determines the reaction time, performance time and response time for an athlete to perform an event. A timing processor is in communication with two spaced-apart switches and when the athlete activates the first switch, it sets in motion a system for randomly activating a transducer that alerts the athlete to start the test. The athlete manipulates the first switch in response to detecting the activated transducer while the device measures the time it takes for this activity, thereby defining the athlete's reaction time. Then, the athlete manipulates the spaced apart second switch while the system monitors the time it takes to perform this task, thereby defining the athlete's performance time. The total response time is then calculated by adding the reaction time to the performance time. A testing protocol for performing a plurality of timed tests and averaging the scores is also disclosed.

    摘要翻译: 运动表现测量系统确定运动员执行事件的反应时间,表现时间和响应时间。 定时处理器与两个间隔开关的开关通信,并且当运动员激活第一开关时,它将运动中的系统用于随机地激活用于警告运动员开始测试的换能器。 响应于检测到激活的换能器,运动员操纵第一开关,同时该装置测量该活动所需的时间,从而定义运动员的反应时间。 然后,运动员操纵间隔开的第二开关,同时系统监视执行该任务所需的时间,从而定义运动员的演奏时间。 然后通过将反应时间添加到执行时间来计算总响应时间。 还公开了用于执行多个定时测试并平均分数的测试协议。

    Untethered oceanographic sensor platform
    10.
    发明授权
    Untethered oceanographic sensor platform 失效
    无阻塞的海洋传感器平台

    公开(公告)号:US4777819A

    公开(公告)日:1988-10-18

    申请号:US44591

    申请日:1987-04-30

    摘要: Method and apparatus for making depth related measurements from an untethered, gravity driven oceanographic platform. The platform is a smooth streamlined, torpedo shaped body releasably carrying ballast in its nose and covered with syntactic foam for buoyancy. At the appropriate depth, the ballast is released and the body ascends under control of an interferometric homing system which guides it to a recovery vessel. The ballast may be an iron slug held in place electromagnetically.

    摘要翻译: 用于从无牵引重力驱动的海洋平台进行深度相关测量的方法和装置。 该平台是一个光滑的流线型鱼雷形体,可释放地在其鼻子上承载镇流器,并覆盖有用于浮力的复合泡沫。 在适当的深度,镇流器被释放,并且机体在干涉引导系统的控制下上升,引导它到回收容器。 镇流器可能是电磁放置的铁屑。