公开(公告)号：US06566856B2

公开(公告)日：2003-05-20

申请号：US10172663

申请日：2002-06-14

Applicant: David A. Sandquist ,  James E. Lenz ,  Dale F. Berndt

Inventor： David A. Sandquist ,  James E. Lenz ,  Dale F. Berndt

IPC: G01R3300

CPC classification number: G01R15/205

Abstract: A magnetoresistive sensor system having resistive elements changing in ohmic value in the presence of a magnetic field of a current being measured. The variant values of the elements are amplified by some electronics that inherently add offset to the resultant values. The elements themselves also add an offset. The output of the electronics is modulated and then buffered as an output. This output is demodulated and integrated. The resultant signal is fed back to the input of the electronics to null out the offsets. The output of the buffer also goes to an inductive coil that is magnetically coupled to the resistive elements to null out the magnetic field from the current being measured. The buffer output indicates the magnitude of the current being measured. An oscillator outputs a signal to actuate the modulator and the demodulator. The oscillator signal also goes to a set/reset circuit for setting and resetting the resistive elements of the magnetoresistive sensor.

公开(公告)号：US06445171B2

公开(公告)日：2002-09-03

申请号：US09430468

申请日：1999-10-29

Applicant: David A. Sandquist ,  James E. Lenz ,  Dale F. Berndt

Inventor： David A. Sandquist ,  James E. Lenz ,  Dale F. Berndt

IPC: G01R3300

CPC classification number: G01R15/205

Abstract: A magnetoresistive sensor system having resistive elements changing in ohmic value in the presence of a magnetic field of a current being measured. The variant values of the elements are amplified by some electronics that inherently add offset to the resultant values. The elements themselves also add an offset. The output of the electronics is modulated and then buffered as an output. This output is demodulated integrated. The resultant signal is fed back to the input of the electronics to null out the offsets. The output of the buffer also goes to an inductive coil that is magnetically coupled to the resistive elements to null out the magnetic field from the current being measured. The buffer output indicates the magnitude of the current being measured. An oscillator outputs a signal to actuate the modulator and the demodulator. The oscillator signal also goes to a set/reset circuit for setting and resetting the resistive elements of the magnetoresistive sensor.

Abstract translation: 一种磁阻传感器系统，其具有在存在正被测量的电流的磁场的情况下以欧姆值变化的电阻元件。 这些元件的变体值由一些电子设备放大，固有地增加了偏移到所得到的值。 元素本身也增加了一个偏移量。 电子设备的输出被调制，然后作为输出进行缓冲。该输出被解调集成。 所得到的信号被反馈到电子设备的输入端以消除偏移。 缓冲器的输出也到达磁耦合到电阻元件的感应线圈，以从被测量的电流中消除磁场。 缓冲区输出指示正在测量的电流的大小。 振荡器输出一个信号来驱动调制器和解调器。 振荡器信号也到达设置/复位电路，用于设置和复位磁阻传感器的电阻元件。

公开(公告)号：US5363194A

公开(公告)日：1994-11-08

申请号：US931941

申请日：1992-08-18

Applicant: Joseph E. Killpatrick ,  Keith R. Fritze ,  Dale F. Berndt

Inventor： Joseph E. Killpatrick ,  Keith R. Fritze ,  Dale F. Berndt

IPC: G01C19/66 ,  H01S3/083 ,  H01S5/00 ,  H01S5/30 ,  G01B9/02

CPC classification number: G01C19/661

Abstract: A laser gyro start up apparatus and method that safely and quickly starts a laser gyro. A microprocessor sequences the mechanical and electrical systems of the laser gyro such that the gyro is started up quickly in the proper sequence. The microprocessor also executes tests on the gyro and provides a health signal in the timing sequence. The start up apparatus starts the laser block dither, laser discharge and acquires the path length controllers. Optical start up operations may be performed including the calibration of volts per mode.

Abstract translation: 一种激光陀螺启动装置和方法，可安全，快速地启动激光陀螺仪。 微处理器对激光陀螺仪的机械和电气系统进行排序，使得陀螺仪以适当的顺序快速启动。 微处理器还对陀螺仪执行测试，并在时序中提供健康信号。 启动装置启动激光块抖动，激光放电并获取路径长度控制器。 可以执行光启动操作，包括每模式的伏特率的校准。

公开(公告)号：US20080042637A1

公开(公告)日：2008-02-21

申请号：US11506339

申请日：2006-08-18

Applicant: David A. Sandquist ,  Dale F. Berndt ,  Andrzej Peczalski

Inventor： David A. Sandquist ,  Dale F. Berndt ,  Andrzej Peczalski

IPC: G01R15/18

CPC classification number: G01R15/18 ,  G01R15/185

Abstract: A current sensor includes a transformer comprising a primary and a secondary, wherein the current sensor is operable to measure current in the primary. A sensing circuit is operable to detect an impedance of the secondary, where the impedance of the secondary changes with an amount of current in the primary and is used to indicate the current in the primary.

Abstract translation: 电流传感器包括包括初级和次级的变压器，其中电流传感器可操作以测量初级电流中的电流。 感测电路可操作以检测次级的阻抗，其中次级的阻抗以主电流中的电流量改变并且用于指示主电流中的电流。

公开(公告)号：US5450198A

公开(公告)日：1995-09-12

申请号：US134368

申请日：1993-10-01

Applicant: Joseph E. Killpatrick ,  Dale F. Berndt ,  Keith R. Fritze

Inventor： Joseph E. Killpatrick ,  Dale F. Berndt ,  Keith R. Fritze

IPC: G01C19/66

CPC classification number: G01C19/665

Abstract: A laser digital path length control method and apparatus for precisely controlling a laser path length to obtain a laser mode and change a laser mode. The invention uses a microprocessor to control a path length control circuit that continuously adjusts the position of path length control mirrors. The mirrors may be positioned in response to the microprocessor to acquire a particular mode of the laser or change the mode of the laser. While the gyro mode is changed the microprocessor increases the gyro run current to prevent loss of gyro function returning the current to its normal value following the mode change. The microprocessor adjusts the position of the two path length control mirrors such that total path length follows a predetermined or dynamic range. The invention allows the calculation of volts per mode of the laser by providing a means to monitor laser intensity as a function of voltage supplied to the laser path length controllers. The method and apparatus of the invention may be used in a laser gyro to improve system path length control and to help compensate for changes in system component parameters.

Abstract translation: 一种用于精确地控制激光路径长度以获得激光模式并改变激光模式的激光数字路径长度控制方法和装置。 本发明使用微处理器来控制路径长度控制电路，其连续地调节路径长度控制反射镜的位置。 反射镜可以响应于微处理器定位以获取激光器的特定模式或改变激光器的模式。 当陀螺仪模式改变时，微处理器增加陀螺运行电流，以防止在模式改变之后将电流返回到其正常值的陀螺仪功能的损失。 微处理器调节两个路径长度控制反射镜的位置，使得总路径长度遵循预定或动态范围。 本发明允许通过提供一种监测作为提供给激光路径长度控制器的电压的函数的激光强度的装置来计算激光器的每个模式的电压。 本发明的方法和装置可用于激光陀螺仪中以改善系统路径长度控制并帮助补偿系统部件参数的变化。

公开(公告)号：US5371754A

公开(公告)日：1994-12-06

申请号：US9165

申请日：1993-01-26

Applicant: Dale F. Berndt ,  Joseph E. Killpatrick

Inventor： Dale F. Berndt ,  Joseph E. Killpatrick

IPC: G01C19/66 ,  H01S3/097 ,  H02J1/00 ,  H02M3/337 ,  H01S3/083

CPC classification number: G01C19/661 ,  H01S3/097

Abstract: The invention provides a laser gyro with a single transformer power supply. The power supply receives a single 15 volt DC supply that is converted to a 320 volt DC supply, a 280 volt DC supply and a 500 volt DC supply. The invention implements a Royer Oscillator by providing a transformer with four windings each center-tapped. Two control transistors control the output of the transformer. The invention also provides a high speed output controlled start-up to prevent meta-stability in the Royer Oscillator.

Abstract translation: 本发明提供了具有单个变压器电源的激光陀螺仪。 电源接收单个15伏直流电源，转换为320伏直流电源，280伏直流电源和500伏直流电源。 本发明通过提供一个具有四个绕组中心抽头的变压器来实现罗伊振荡器。 两个控制晶体管控制变压器的输出。 本发明还提供了高速输出控制启动，以防止在Royer振荡器中的元稳定性。

公开(公告)号：US4785422A

公开(公告)日：1988-11-15

申请号：US907757

申请日：1986-09-15

Applicant: Dale F. Berndt ,  David L. McCall ,  Thomas R. Arneberg

Inventor： Dale F. Berndt ,  David L. McCall ,  Thomas R. Arneberg

IPC: G11C5/00 ,  G11C8/16 ,  G11C11/40 ,  G11C11/34 ,  G11C7/00 ,  G11C7/02

CPC classification number: G11C5/005 ,  G11C11/40 ,  G11C8/16

Abstract: An alpha particle resistant memory cell and array with complementary, differential data in, data out and write enable inputs capable of independent, simultaneous read/write operations. During write operations, clocked differential write and data inputs steer cell current to induce differential cell voltages indicative of the stored data. During read operations, a read select input shifts the voltage levels of the selected cell to produce a distinguishable output which dominates over the other cells to appropriately steer current at a sense amplifier to identify the binary cell contents. A 64 row by 12 bit register stack, with split word write, master reset and read enable is also disclosed.

Abstract translation: 具有互补，差分数据输入，数据输出和写入使能输入的能够进行独立，同时读/写操作的α粒子抗性存储单元和阵列。 在写操作期间，时钟差分写入和数据输入引导单元电流，以引发指示存储数据的差分单元电压。 在读取操作期间，读取选择输入移位所选择的单元的电压电平，以产生一个可辨别的输出，该输出在其他单元上占主导地位，以适当地引导读出放大器的电流，以识别二进制单元内容。 还公开了64行×12位寄存器堆栈，分离字写入，主复位和读使能。

公开(公告)号：US5299211A

公开(公告)日：1994-03-29

申请号：US936155

申请日：1992-08-27

Applicant: Dale F. Berndt ,  Joseph E. Killpatrick

Inventor： Dale F. Berndt ,  Joseph E. Killpatrick

IPC: G01C19/66 ,  H01S3/03 ,  H01S3/083 ,  H01S3/097 ,  G01C19/64

CPC classification number: H01S3/03 ,  G01C19/661 ,  H01S3/097

Abstract: A high voltage start circuit includes a high voltage start module and high voltage pulse generator apparatus. The high voltage pulse generator amplifies a five volt pulse at 60 KHz duty cycle to an output of 280 volts pulses at approximately 50% duty cycle. A PN junction high voltage diode with a high forward voltage drop and a resistor divider drives and holds a first transistor out of saturation. A low voltage diode creates a dead band such that two high voltage start module transistors are never on at the same time. The high voltage module contains two high voltage blocking diodes which protect the laser gyro active current control circuitry during start up. Two small ballast resistors and a parallel 10 times voltage multiplier generate at least a 2500 VDC output. The high voltage start circuit is contained within a laser gyro housing and is configured to have a volume less than the volume of the ring laser gyro block.

Abstract translation: 高电压启动电路包括高电压启动模块和高电压脉冲发生器装置。 高电压脉冲发生器以大约50％的占空比将60KHz占空比的5伏特脉冲放大到280伏脉冲的输出。 具有高正向压降的PN结高压二极管和电阻分压器驱动并保持第一晶体管不饱和。 低压二极管产生一个死区，使得两个高电压启动模块晶体管不会同时导通。 高压模块包含两个高压阻塞二极管，用于在启动期间保护激光陀螺有源电流控制电路。 两个小型镇流电阻和并联10倍电压倍增器产生至少2500 VDC输出。 高压启动电路被包含在激光陀螺仪外壳内并被配置为具有小于环形激光陀螺仪块体积的体积。

公开(公告)号：US5249031A

公开(公告)日：1993-09-28

申请号：US805122

申请日：1991-12-11

Applicant: Keith R. Fritze ,  Joseph E. Killpatrick ,  Dale F. Berndt

Inventor： Keith R. Fritze ,  Joseph E. Killpatrick ,  Dale F. Berndt

IPC: G01C19/66

CPC classification number: G01C19/664

Abstract: A dither stripper for laser gyro dither including a digital microcomputer which controls the stripping of the dither signal from the inertial navigation signal of the laser gyro. The dither stripper schedules internal A/D conversions using an A/D conversion arbitration scheme as well as calculates the expected system sample clock. Accurate dither stripping is achieved using a phase locked loop feedback system which compensates for real time changes in dither pickoff components while incorporating an accurate gain control mechanism.

Abstract translation: 用于激光陀螺仪抖动的抖动剥离器，包括控制从激光陀螺仪的惯性导航信号中去除抖动信号的数字微计算机。 抖动剥离器使用A / D转换仲裁方案调度内部A / D转换，并计算预期的系统采样时钟。 使用锁相环反馈系统实现精确的抖动剥离，该系统补偿抖动检测元件的实时变化，同时结合精确的增益控制机制。

公开(公告)号：US5225889A

公开(公告)日：1993-07-06

申请号：US805124

申请日：1991-12-11

Applicant: Keith R. Fritze ,  Joseph E. Killpatrick ,  Dale F. Berndt

Inventor： Keith R. Fritze ,  Joseph E. Killpatrick ,  Dale F. Berndt

IPC: G01C19/70

CPC classification number: G01C19/70

Abstract: A direct digital dither drive for a laser gyro dither motor including a digital microcomputer which controls the dithering of a laser gyro to prevent lock in of the laser beams. The digital drive senses a dither position and schedules internal A/D conversions using an A/D conversion arbitration scheme. The period frequency and location of the minimum and maximum drive are determined using the microcontroller. Accurate dither drive is accomplished using a digital analog feedback system which compensates for real time changes in dither pickoff and dither drive components.

Abstract translation: 一种用于激光陀螺仪抖动电动机的直接数字抖动驱动器，包括控制激光陀螺仪抖动以防止激光束锁定的数字微计算机。 数字驱动器检测抖动位置，并使用A / D转换仲裁方案调度内部A / D转换。 使用微控制器确定最小和最大驱动的周期频率和位置。 使用数字模拟反馈系统实现精确的抖动驱动，可以补偿抖动传感器和抖动驱动部件的实时变化。