公开(公告)号：US5560115A

公开(公告)日：1996-10-01

申请号：US478378

申请日：1995-06-07

申请人： J. Thomas Fowler

发明人： J. Thomas Fowler

IPC分类号： G01C17/30 ,  G01R33/04 ,  G01C17/28

CPC分类号： G01R33/04 ,  G01C17/30

摘要： An apparatus for mounting a magnetometer including a frame and a platform mounted for rotation within the frame. The magnetometer and one or more counterweights are mounted within the platform such that gravity acting on the counterweights maintains the magnetometer in a horizontal orientation. A first coil is coupled in parallel with the magnetometer and is wound around the perimeter of the platform. A second coil is wound around the perimeter of the frame such that the first and second coils form an air core transformer. The second coil terminates in two terminals which provide a communication port. A sensing circuit coupled to the port electrically communicates with the magnetometer via the inductive coupling provided by the transformer. In alternative embodiments, each of the first and second coils is implemented as two coils with associated diodes. The coils are wound such that they create four transformers, two of the transformers being characterized by a first coupling coefficient and two of the transformers being characterized by a second coupling coefficient. In this embodiment, the inductive coupling provided by the four transformers permits a sensing circuit to apply a bias signal to the magnetometer thereby driving the magnetometer to null balance so that it does not magnetically interfere with any other magnetometers in close proximity, and to allow the magnetometer to operate in a more linear fashion.

摘要翻译： 一种用于安装磁力计的装置，包括框架和安装成用于在框架内旋转的平台。 磁力计和一个或多个配重被安装在平台内，使得作用在配重上的重力将磁力计维持在水平方向。 第一线圈与磁力计平行地联接并缠绕在平台的周边。 第二线圈围绕框架的周边缠绕，使得第一和第二线圈形成空气变压器。 第二线圈终止于提供通信端口的两个端子。 耦合到端口的感测电路经由变压器提供的感应耦合与磁力计电连通。 在替代实施例中，第一和第二线圈中的每一个被实现为具有相关二极管的两个线圈。 卷绕线圈使得它们形成四个变压器，其中两个变压器的特征在于第一耦合系数，并且两个变压器的特征在于第二耦合系数。 在该实施例中，由四个变压器提供的电感耦合允许感测电路将偏置信号施加到磁力计，从而驱动磁力计零平衡，使得其不会紧密地与任何其他磁力计相互干扰，并且允许 磁力计以更线性的方式操作。

公开(公告)号：US5381603A

公开(公告)日：1995-01-17

申请号：US99046

申请日：1993-07-27

申请人： John S. Lee

发明人： John S. Lee

IPC分类号： G01C17/32 ,  G01C17/30 ,  G01C17/10

CPC分类号： G01C17/30

摘要： An electronic compass has a display including a reference pointer that indicates a reference heading stored in response to an input signal. The reference heading is the current heading at the time of the input signal, and the reference pointer in the display is updated as the orientation of the compass changes.

摘要翻译： 电子罗盘具有显示器，其包括指示响应于输入信号存储的参考标题的参考指针。 参考标题是输入信号时的当前标题，随着指南针的方向改变，显示中的参考指针被更新。

公开(公告)号：US5331563A

公开(公告)日：1994-07-19

申请号：US984207

申请日：1992-11-30

申请人： Yutaka Masumoto ,  Satoshi Odagawa

发明人： Yutaka Masumoto ,  Satoshi Odagawa

IPC分类号： G01C17/30 ,  G01C19/00 ,  G01C21/00 ,  G01C21/28 ,  G06F15/50

CPC分类号： G01C21/28

摘要： The navigation device includes vehicle condition discriminating unit for discriminating whether the vehicle is stopped or not, angular velocity detecting unit for detecting change of direction of the vehicle and producing angular velocity data on the basis of the detected change of direction, absolute direction detecting unit for detecting geomagnetism and producing absolute direction data on the basis of the detected geomagnetism, offset processing unit for producing corrected angular velocity data from the angular velocity data and a first reference value, and offset reset unit for renewing the first reference value. The offset reset unit renews the first reference value with the angular velocity data which is obtained when the vehicle is discriminated to be stopped, a change rate of the angular velocity data is within a predetermined second reference value and a change rate of the absolute direction data is within a predetermined third reference value.

摘要翻译： 该导航装置包括用于判断车辆是否停止的车辆状态判定单元，用于检测车辆的方向变化的角速度检测单元，并且根据检测到的方向变化产生角速度数据，绝对方向检测单元， 基于检测到的地磁检测地磁并产生绝对方向数据;偏移处理单元，用于从角速度数据和第一参考值产生校正的角速度数据;以及偏移重置单元，用于更新第一参考值。 偏移复位单元利用当车辆被判定为停止时获得的角速度数据来更新第一参考值，角速度数据的变化率在预定的第二参考值内，并且绝对方向数据的变化率 在预定的第三参考值内。

公开(公告)号：US5241270A

公开(公告)日：1993-08-31

申请号：US692798

申请日：1991-04-29

申请人： Kim Kwee Ng

发明人： Kim Kwee Ng

IPC分类号： G01C17/28 ,  G01C17/30

CPC分类号： G01C17/28 ,  G01C17/30

摘要： A Hall effect device with appropriate electronic circuits can sense a very weak magnetic field and it is thus useful to be used as a compass. It can also be configured as two or more directional indicators as desired.

摘要翻译： 具有适当电子电路的霍尔效应装置可感测到非常弱的磁场，因此可用作罗盘。 它也可以根据需要配置为两个或更多个方向指示器。

公开(公告)号：US5187437A

公开(公告)日：1993-02-16

申请号：US637352

申请日：1991-01-04

申请人： Bertil Rydergren ,  Jan Silfven ,  Roger Malmhall

发明人： Bertil Rydergren ,  Jan Silfven ,  Roger Malmhall

IPC分类号： G01C17/30 ,  G01R33/02 ,  G01R33/04

CPC分类号： G01R33/04

摘要： A magnetic field detecting device, particularly for detecting the earth's magnetic field, includes one or more amorphous or microcrystalline magnetic fibres having two bistable magnetization states and surrounded by one single measuring coil (103). The measuring coil is supplied with a periodically changing control signal (101a) which is superposed with a detected signal (103a) contingent on the sensed magnetic field. The detected signal is caused to control a flip-flop (122) which influences the working direction of an integrator (101), the output signal of which forms a performance signal in addition to forming said control signal. The performance signal (101c, 106a) is processed in a microprocessor (107), to which a control signal (122b) is also delivered from the flip-flop, and is able to restart the circuit when a control signal fails to appear.

摘要翻译： 特别是用于检测地球磁场的磁场检测装置包括一个或多个具有两个双稳态磁化状态并由一个单个测量线圈（103）围绕的非晶或微晶磁性纤维。 测量线圈被提供有周期性变化的控制信号（101a），该控制信号与检测到的信号（103a）叠加，这取决于感测的磁场。 使检测到的信号控制影响积分器（101）的工作方向的触发器（122），除了形成所述控制信号之外，其积分器的输出信号形成演奏信号。 性能信号（101c，106a）在微处理器（107）中被处理，控制信号（122b）也从触发器发送到该微处理器（107），并且当控制信号不能出现时能够重启该电路。

公开(公告)号：US5090231A

公开(公告)日：1992-02-25

申请号：US413950

申请日：1989-09-28

申请人： Lawrence W. Gallagher

发明人： Lawrence W. Gallagher

IPC分类号： G01C17/30 ,  G01C17/38

CPC分类号： G01C17/38 ,  G01C17/30

摘要： A digital compass system for use in a wide variety of motor vehicle models, especially in the automotive aftermarket, and including various features which simplify installation and calibration by non-professionals. A knowledge of magnetic direction is not required. During calibration, only true geographic directions are used throughout. While searching for a suitable location within the vehicle to mount the magnetic sensor, the installer is advised by the digital display unit of the system as to whether or not a given location contains excessively strong magnetic components.

摘要翻译： 一种数字罗盘系统，用于各种机动车辆模型，特别是汽车售后市场，并且包括简化非专业人员的安装和校准的各种功能。 不需要磁知识。 在校准期间，只有真正的地理方向才能使用。 当在车辆内寻找合适的位置来安装磁性传感器时，系统的数字显示单元建议安装者确定给定位置是否包含过大的磁性部件。

公开(公告)号：US5010653A

公开(公告)日：1991-04-30

申请号：US427894

申请日：1989-10-20

申请人： John T. Fowler

发明人： John T. Fowler

IPC分类号： G01C17/30 ,  G01C17/38 ,  G01R33/02 ,  G05D1/08

CPC分类号： G01R33/0206 ,  G01C17/30 ,  G01C17/38

摘要： Apparatus and method for determining the azimuth (heading), pitch and roll which include a magnetometer-type sensor providing signals measured in three axes relative to a reference frame, and coil elements wound around the magnetometer which selectively impose specific magnetic fields about the sensor. Three axes field components of the magnetic field are measured from the sensor with and without the selective energization of the magnetic coils and stored, from which the azimuth, pitch and roll are calculated. Furthermore, quadrant correction is applied such that a unique reading is produced for all angles through 360.degree. of azimuth, pitch or roll.

摘要翻译： 用于确定方位角（俯仰），俯仰和滚动的装置和方法，其包括提供相对于参考系的三个轴测量的信号的磁力计型传感器，以及围绕磁力计缠绕的线圈元件，其选择性地施加围绕传感器的特定磁场。 磁传感器的三轴场分量由磁传感器进行测量，并且不存在磁存储器的选择性激励，从而计算方位角，俯仰角和滚动角。 此外，应用象限校正，使得通过360°的方位，俯仰或滚动，对于所有角度产生独特的读数。

公开(公告)号：US4733179A

公开(公告)日：1988-03-22

申请号：US763143

申请日：1985-07-31

申请人： Harald Bauer ,  Gerhard Hettich

发明人： Harald Bauer ,  Gerhard Hettich

IPC分类号： G01C17/30 ,  G01C17/38 ,  G01R33/02

CPC分类号： G01C17/38

摘要： To calibrate a electronic compass provided with a magnetometer and being fixedly mounted in a motor vehicle the magnitude, and direction of interference magnetic field must be determined. For this purpose, a constant magnetic field Hg containing an earth's field component He' and the interference field component Hs, is measured by the magnetometer in a first position of the vehicle (Hg1) and then in a second position (Hg2) in which the vehicle is turned by 180.degree.. From the measured constant field magnitudes and directions, (Hg1, Hg2) the interference field component Hs is calculated according to vector equation H.sub.s +1/2 (Hg 1+Hg 2).

摘要翻译： PCT No.PCT / DE84 / 00242 Sec。 371日期：1985年7月31日 102（e）日期1985年7月31日PCT提交1984年11月14日PCT公布。 第WO85 / 02902号公报 日期：1985年7月4日。为了校准配有磁力计的电子罗盘，固定地安装在机动车辆中，必须确定干扰磁场的大小和方向。 为此，通过磁力计在车辆的第一位置（Hg1）中测量含有地球场分量He'和干扰场分量Hs的恒定磁场Hg，然后在第二位置（Hg2）中测量 车辆转180度。 根据测量的恒定磁场强度和方向（Hg1，Hg2），根据矢量方程Hs + 1/2（Hg 1 + Hg 2）计算干扰场分量Hs。

公开(公告)号：US4694583A

公开(公告)日：1987-09-22

申请号：US844175

申请日：1986-03-26

申请人： Peter G. Blaney

发明人： Peter G. Blaney

IPC分类号： G01C17/30

CPC分类号： G01C17/30

摘要： An electronic display device for presenting directional information to the operator of a motor vehicle. The display simultaneously shows current vehicle direction of travel as well as the relative directions of the 4 major compass axes by converting the direction information from an electronic flux gate compass. The device is further optimized to reduce the number of pin connections to the display and associated driver complexity and is readily applicable to LED, LCD or vacuum fluorescent type display elements.

摘要翻译： 一种用于向机动车辆的操作者呈现定向信息的电子显示装置。 通过转换来自电子通量门罗盘的方向信息，显示同时显示当前车辆行进方向以及4个主罗盘轴的相对方向。 该器件进一步优化以减少与显示器的引脚连接数量和相关的驱动器复杂性，并且容易适用于LED，LCD或真空荧光型显示元件。

公开(公告)号：US4673913A

公开(公告)日：1987-06-16

申请号：US418529

申请日：1982-09-15

申请人： Shigeyuki Akita ,  Yoshiyuki Kago

发明人： Shigeyuki Akita ,  Yoshiyuki Kago

IPC分类号： G01C17/30 ,  B60R16/02 ,  B60R16/023 ,  B60Q1/00 ,  G01C17/28

CPC分类号： B60R16/0231

摘要： In a zigzag running warning system for automotive vehicles which detects and gives a warning of zigzag running of a vehicle, a terrestrial magnetism sensor generates an electric signal having an amplitude varying in dependence on the direction of travel of the vehicle with respect to the direction of the terrestrial magnetism. An electronic unit in the system discriminates that vehicle is running in a zigzag direction when the amplitude of the electric signals changes in excess of a predetermined value at a period which is less than a predetermined time, and informs the driver of the zigzag running by a speaker, lamp or the like.

摘要翻译： 在检测并给出车辆之字形运行的警告的用于汽车的之字形运行警告系统中，地磁传感器产生电信号，该电信号的幅度根据车辆行进方向相对于 地磁。 当电信号的振幅在预定时间以上的时间内超过预定值时，系统中的电子单元判断车辆是以锯齿形方向运行，并且通过一个 扬声器，灯等。