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11. 发明授权

US3161459A Automatic null-balancing electrical measuring recorders 失效
标题翻译：自动零平衡电子测量记录仪
公开(公告)号：US3161459A
公开(公告)日：1964-12-15
申请号：US17615062
申请日：1962-02-27
申请人： CONKLIN CHARLES E
发明人： CONKLIN CHARLES E
IPC分类号： G01D3/06 , G01D18/00
CPC分类号： G01D3/06 , G01D18/00

12. 发明授权

US2322498A Means for generating balancing signals 失效
标题翻译：用于产生平衡信号的手段
公开(公告)号：US2322498A
公开(公告)日：1943-06-22
申请号：US42594642
申请日：1942-01-07
申请人： SPERRY PROD INC
发明人： ALEXANDER ZEITLIN
IPC分类号： G01D3/06
CPC分类号： G01D3/06 , Y10T307/505 , Y10T307/713

13. 发明授权

US2113436A Measuring system 失效
公开(公告)号：US2113436A
公开(公告)日：1938-04-05
申请号：US73685334
申请日：1934-07-25
申请人： LEEDS & NORTHRUP CO
发明人： WILLIAMS JR ALBERT J
IPC分类号： G01D3/06
CPC分类号： G01D3/06 , Y10S33/03 , Y10S73/11

14. 发明申请

US20100211342A1 Current Generating Device for the Generation and Simultaneous Monitoring of a Measuring Current 有权
标题翻译：用于产生和同时监测测量电流的电流发生装置
公开(公告)号：US20100211342A1
公开(公告)日：2010-08-19
申请号：US12694878
申请日：2010-01-27
申请人： Andreas Blessing
发明人： Andreas Blessing
IPC分类号： G01R19/15 , G06F19/00
CPC分类号： G01D3/06
摘要： The generation and monitoring of a load-independent output current for a level meter, pressure gauge, flowmeter or evaluation device are described. A current that is equal or unequal to the measuring current, but inverted relative thereto, can be generated continuously or within certain time intervals in a switching circuit that is realized independently of the network generating the measuring current. The generated current can be fed into the measuring circuit at a comparison point and added. The compensation principle makes it possible to determine whether the measuring current corresponds to the nominal value, wherein a testing current is fed into the first electric circuit by means of a second switching circuit that contains a second current source. A certain expectancy value of a voltage to be tapped can be calculated in dependence on the testing current being fed in and the nominal value. If the measured voltage deviates from the expectancy value, a deviation of the measuring current from the nominal value is detected and can be output for a user.
摘要翻译：描述了对液位计，压力表，流量计或评估装置的负载无关输出电流的产生和监测。可以在独立于产生测量电流的网络实现的开关电路中连续地或在一定时间间隔内产生与测量电流相等或不相等但相反的电流。产生的电流可以在比较点进给到测量电路并加入。补偿原理使得可以确定测量电流是否对应于标称值，其中通过包含第二电流源的第二开关电路将测试电流馈送到第一电路中。可以根据馈入的测试电流和标称值来计算待点火电压的某一预期值。如果测量电压偏离预期值，则检测到测量电流与标称值的偏差，并且可以为用户输出。

15. 发明授权

US4414852A Automatic zero balance circuit 失效
标题翻译：自动零平衡电路
公开(公告)号：US4414852A
公开(公告)日：1983-11-15
申请号：US301628
申请日：1981-09-14
申请人： Thomas J. McNeill
发明人： Thomas J. McNeill
IPC分类号： G01D3/06 , G01B7/00 , H04B1/12
CPC分类号： G01D3/06
摘要： An automatic zero balance circuit for nulling the initial offset signal received from a test transducer. A quadrature oscillator powers a carrier transducer with the phase reference signal. A summing circuit receives the return signal from the transducer and sums it with two other signals. The resultant summation signal is divided into two components, the phase reference component and the quadrature reference component which are fed back into the summing circuit as the two other signals. The component values nullify the return signal thereby cancelling the initial offset signal.
摘要翻译：一种用于使从测试传感器接收的初始偏移信号归零的自动零平衡电路。正交振荡器为相位参考信号的载波换能器供电。求和电路从换能器接收返回信号并将其与两个其它信号相加。所得到的求和信号被分为两个分量，相位参考分量和正交参考分量，作为另外两个信号反馈到求和电路中。分量值使返回信号无效，从而抵消初始偏移信号。

16. 发明授权

US4253051A Phase locked loop having electrical zeroing 失效
标题翻译：锁相环具有电调零功能
公开(公告)号：US4253051A
公开(公告)日：1981-02-24
申请号：US938595
申请日：1978-08-31
申请人： Rudy L. Schneider
发明人： Rudy L. Schneider
IPC分类号： G01D3/06
CPC分类号： G01D3/06
摘要： In apparatus for measuring the relative position between a fixed member and a movable member, as in a flight simulator, means for electrically offsetting the position measurement to compensate for mechanical offsets and the like. The relative position may be extracted by applying reference oscillator signals to a stator winding, thereby inducing a signal in a rotor winding. The rotor signal is communicated to a digitally closed phase lock loop including a phase detector, an integrator, a loop filter, a voltage controlled oscillator, and a frequency divider having a counter. The invention provides value setting means such as thumbwheel switches, and comparison means coupled between the value setting means and the frequency divider counter, for generating a pulse signal when the counter contents corresponds to the value set in the value setting means. This varies the timing of the feedback in the loop and allows an arbitrary number to be present in the counter at a particular time in the reference oscillator cycle. To avoid spurious pulses in the feedback loop, the feedback signal is synchronized to a fixed point in the cycle of the voltage controlled oscillator output which occurs generally in the middle of the pulse from the comparison means.
摘要翻译：在用于测量固定构件和可动构件之间的相对位置的装置中，如在飞行模拟器中，用于电气偏移位置测量以补偿机械偏移等的装置。可以通过将参考振荡器信号施加到定子绕组来提取相对位置，从而在转子绕组中引起信号。转子信号被传送到包括相位检测器，积分器，环路滤波器，压控振荡器和具有计数器的分频器的数字闭合锁相环。本发明提供了诸如指轮开关的值设定装置，以及耦合在值设定装置和分频计数器之间的比较装置，用于当计数器内容对应于在值设定装置中设定的值时产生脉冲信号。这改变了回路中的反馈时序，并允许在参考振荡器周期的特定时间在计数器中存在任意数量。为了避免反馈回路中的杂散脉冲，反馈信号与压控振荡器输出的周期中的固定点同步，这通常出现在来自比较装置的脉冲的中间。

17. 发明授权

US4108007A Manometers with measurement range multiplication 失效
标题翻译：压力表具有测量范围乘法
公开(公告)号：US4108007A
公开(公告)日：1978-08-22
申请号：US798827
申请日：1977-05-20
申请人： Kurt Neubeck , Karl-Heinz Schwing , Kurt Klein
发明人： Kurt Neubeck , Karl-Heinz Schwing , Kurt Klein
IPC分类号： G01D3/024 , G01D3/06 , G01L7/04
CPC分类号： G01D3/06 , G01D3/024 , G01L7/048
摘要： Manometers with a tube spring metering element are provided with multiple range measurement capability by means of a stop element which is adjustable and yieldable so as to convert non-linear movement of the associated part of the tube spring metering element to linear movement.
摘要翻译：具有管弹簧计量元件的压力计通过可调节和可屈服的止动元件提供多个范围测量能力，以便将管弹簧计量元件的相关部分的非线性运动转换成线性运动。

18. 发明授权

US2503085A Measuring system 失效
标题翻译：测量系统
公开(公告)号：US2503085A
公开(公告)日：1950-04-04
申请号：US58551145
申请日：1945-03-29
申请人： LEEDS & NORTHRUP CO
发明人： WILLIAMS JR ALBERT J
IPC分类号： G01D3/06
CPC分类号： G01D3/06

19. 发明授权

US08405378B2 Current generating device for the generation and simultaneous monitoring of a measuring current 有权
标题翻译：用于产生和同时监测测量电流的电流产生装置
公开(公告)号：US08405378B2
公开(公告)日：2013-03-26
申请号：US12694878
申请日：2010-01-27
申请人： Andreas Blessing
发明人： Andreas Blessing
IPC分类号： G01R31/02
CPC分类号： G01D3/06
摘要： The generation and monitoring of a load-independent output current for a level meter, pressure gauge, flowmeter or evaluation device are described. A current that is equal or unequal to the measuring current, but inverted relative thereto, can be generated continuously or within certain time intervals in a switching circuit that is realized independently of the network generating the measuring current. The generated current can be fed into the measuring circuit at a comparison point and added. The compensation principle makes it possible to determine whether the measuring current corresponds to the nominal value, wherein a testing current is fed into the first electric circuit by means of a second switching circuit that contains a second current source. A certain expectancy value of a voltage to be tapped can be calculated in dependence on the testing current being fed in and the nominal value. If the measured voltage deviates from the expectancy value, a deviation of the measuring current from the nominal value is detected and can be output for a user.
摘要翻译：描述了对液位计，压力表，流量计或评估装置的负载无关输出电流的产生和监测。可以在独立于产生测量电流的网络实现的开关电路中连续地或在一定时间间隔内产生与测量电流相等或不相等但相反的电流。产生的电流可以在比较点进给到测量电路并加入。补偿原理使得可以确定测量电流是否对应于标称值，其中通过包含第二电流源的第二开关电路将测试电流馈送到第一电路中。可以根据馈入的测试电流和标称值来计算待点火电压的某一预期值。如果测量电压偏离预期值，则检测到测量电流与标称值的偏差，并且可以为用户输出。

20. 发明授权

US06972553B2 Sensor readout circuit 失效
标题翻译：传感器读出电路
公开(公告)号：US06972553B2
公开(公告)日：2005-12-06
申请号：US10075754
申请日：2002-02-14
申请人： Anthony Petrovich , John R. Williams , Christopher E. Dubé
发明人： Anthony Petrovich , John R. Williams , Christopher E. Dubé
IPC分类号： G01D3/06 , G01H13/00 , G01N27/00 , G01R23/00 , G01G3/16 , G01R29/22
CPC分类号： G01N29/036 , G01D3/06 , G01H13/00 , G01N2291/0256
摘要： A sensor readout circuit which provides a frequency signal output including a phase detector circuit responsive to an output signal from a sensor and an input signal to the sensor and configured to detect the phase difference between the input signal and the output signal, and a drive circuit responsive to the phase detector circuit and configured to maintain a fixed phase difference between the input signal and the output signal.
摘要翻译：传感器读出电路，其提供频率信号输出，所述频率信号输出包括响应于来自传感器的输出信号的相位检测器电路和对所述传感器的输入信号，并且被配置为检测所述输入信号和所述输出信号之间的相位差;以及驱动电路响应于相位检测器电路并且被配置为保持输入信号和输出信号之间的固定相位差。

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