公开(公告)号：US06937954B2

公开(公告)日：2005-08-30

申请号：US10660608

申请日：2003-09-12

申请人： Ha Woong Jeong ,  Won Tae Choi ,  Han Chul Jo ,  Jin Yong Kang ,  Chang Hyun Kim ,  Oh Jo Kwon

发明人： Ha Woong Jeong ,  Won Tae Choi ,  Han Chul Jo ,  Jin Yong Kang ,  Chang Hyun Kim ,  Oh Jo Kwon

IPC分类号： G01C17/28 ,  G01C17/00 ,  G01C17/32 ,  G01C17/38 ,  G01P21/00 ,  G01R15/00 ,  G01S17/00 ,  H03M1/10 ,  H03M1/12 ,  G06F19/00

CPC分类号： G01C17/00 ,  G01C17/38

摘要： In a signal processor for use in an electronic compass for controlling an offset voltage generated in an analog signal process and automatically controlling an amplification gain, an analog signal processor 52 amplifies signals Sx and Sy, and controls an offset voltage and amplitude A generated during an amplification process. An analog/digital (AD) converter 53 converts analog signals Vadcx and Vadcy from the analog signal processor 52 into a digital signal. A digital signal processor 54 measures a maximum value Vadc—max and a minimum value Vadc—min associated with the digital signal from the AD converter 53, and outputs, to the analog signal processor 52, an offset control signal Soc and a gain control signal Sgc based on the maximum value Vadc—max and minimum value Vadc—min. The signal processor can maintain levels of signals, to be inputted into the AD converter, to be within a reference voltage range.

摘要翻译： 在用于控制在模拟信号处理中产生的偏移电压并自动控制放大增益的电子罗盘中的信号处理器中，模拟信号处理器52放大信号Sx和Sy，并且控制信号Sx和Sy产生的偏移电压和振幅A 放大过程。 模拟/数字（AD）转换器53将模拟信号Vadcx和Vadcy从模拟信号处理器52转换为数字信号。 数字信号处理器54测量最大值V SUB和最小值V adc最小值 与AD转换器53的数字信号相关联的 - 分钟，并向模拟信号处理器52输出偏移 控制信号Soc和增益控制信号Sgc，并且基于最大值V max和/或最小值V 。 信号处理器可以将输入到AD转换器的信号电平保持在参考电压范围内。

公开(公告)号：US06871411B1

公开(公告)日：2005-03-29

申请号：US10757497

申请日：2004-01-15

申请人： Jin Yong Kang ,  Won Tae Choi ,  Chang Hyun Kim ,  Ha Woong Jeong ,  Han Chul Jo ,  Oh Jo Kwon

发明人： Jin Yong Kang ,  Won Tae Choi ,  Chang Hyun Kim ,  Ha Woong Jeong ,  Han Chul Jo ,  Oh Jo Kwon

IPC分类号： G01C17/32 ,  G01C17/38

CPC分类号： G01C17/38

摘要： An automatic calibration method for use in an electronic compass. Using the automatic calibration method, the electronic compass automatically calculates and corrects offset and scale values of a geomagnetic signal by detecting one rotation of a geomagnetic axis during a predetermined period of time. The electronic compass calculates an azimuth angle upon receiving geomagnetic data from the geomagnetic sensor, and finds maximum and minimum values of sensor signals of individual axes of the geomagnetic sensor using the received geomagnetic data such that it can correct or calibrate deviation of the azimuth angle. When a time consumed for calibration is the same or shorter than a maximum calibration effective time, the electronic compass determines whether a current state of the detected entry signal indicates a predetermined steady-state flow. If the current state indicates the steady-state flow, at the same time a signal indicative of one rotation of the geomagnetic sensor is received, and the time consumed for calibration is longer than a predetermined minimum calibration effective time, the electronic compass calculates offset and scale values using the maximum and minimum values and stores the calculated offset and scale values.

摘要翻译： 一种用于电子罗盘的自动校准方法。 使用自动校准方法，电子罗盘通过在预定时间段内检测地磁轴的一次旋转，自动计算和校正地磁信号的偏移和比例值。 电子罗盘在从地磁传感器接收地磁数据时计算方位角，并使用接收到的地磁数据找出地磁传感器各个轴的传感器信号的最大值和最小值，使其可以校正或校准方位角的偏差。 当校准消耗的时间与最大校准有效时间相同或更短时，电子罗盘确定检测到的进入信号的当前状态是否表示预定的稳态流。 如果当前状态指示稳态流，则同时接收到表示地磁传感器一次旋转的信号，并且校准消耗的时间长于预定的最小校准有效时间，电子罗盘计算偏移和 使用最大值和最小值进行比例值，并存储计算的偏移量和比例值。

公开(公告)号：US06957156B2

公开(公告)日：2005-10-18

申请号：US10770503

申请日：2004-02-04

申请人： Han Chul Jo ,  Won Tae Choi ,  Chang Hyun Kim ,  Jin Yong Kang ,  Oh Jo Kwon ,  Ha Woong Jeong

发明人： Han Chul Jo ,  Won Tae Choi ,  Chang Hyun Kim ,  Jin Yong Kang ,  Oh Jo Kwon ,  Ha Woong Jeong

IPC分类号： G01C17/32 ,  G01C17/38 ,  G01F17/00

CPC分类号： G01C17/38

摘要： A method of finding a dip angle in a tilt-compensated electronic compass includes the steps of a) setting a predetermined azimuth angle indicative of a horizontal status of a geomagnetic sensor to a reference azimuth angle; b) if the compass is slightly tilted, stepwise-increasing a dip angle within a predetermined dip angle search range, and calculating azimuth angles associated with individual dip angles; c) comparing the calculated azimuth angles with the reference azimuth angle, and finding one azimuth angle, which is closest to the reference azimuth angle, among the calculated azimuth angles; and d) setting the dip angle applied to the closest azimuth angle to a specific dip angle associated with a corresponding azimuth angle, such that a more accurate azimuth angle can be detected by the on the basis of the calculated dip angle.

摘要翻译： 在倾斜补偿电子罗盘中找到倾角的方法包括以下步骤：a）将指示地磁传感器的水平状态的预定方位角设置为参考方位角; b）如果指南针稍微倾斜，在预定倾角搜索范围内逐步增加倾角，并计算与各个倾角相关的方位角; c）将所计算的方位角与参考方位角进行比较，并找出最接近参考方位角的方位角之间的计算方位角; 以及d）将施加到最接近的方位角的倾角设置为与对应的方位角相关联的特定倾角，使得可以通过基于所计算的倾角来检测更准确的方位角。