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    • 23. 发明授权
    • Compass device and method for a compass device
    • 指南针装置和罗盘装置的方法
    • US07905026B2
    • 2011-03-15
    • US12153505
    • 2008-05-20
    • Mikko MartikkaErik Lindman
    • Mikko MartikkaErik Lindman
    • G01C17/38
    • G01C17/38
    • The invention relates to a method for defining a compass direction by means of an electronic compass device. In the method at least two field components of an external magnetic field are measured, from which a set of data points is formed, which correspond to the different orientations of the device relative to the external magnetic field, so that the location of the data points in a set of co-ordinates depends on the Earth's magnetic field and the magnetic disturbances of the environment. From the data points it is determined whether the set of data points correspond to a measurement, in which the device has remained on the horizontal plane with a predefined accuracy, or the tilting of the device is detected relative to the horizontal plane during measurement and the set of data points is corrected to correspond to a measurement in which the device has remained on the horizontal plane with a predefined accuracy. If the set of data points corresponds to a measurement in which the device has remained on the horizontal plane with a predefined accuracy, or the said correction of the set of data points has been performed, a new compass direction is defined by using the disturbance correction made on the basis of the said set of data points. The invention achieves a practical way of displaying an accurate direction.
    • 本发明涉及一种通过电子罗盘装置定义罗盘方向的方法。 在该方法中,测量外部磁场的至少两个场分量,从其形成一组数据点,其对应于装置相对于外部磁场的不同取向,使得数据点的位置 在一组坐标取决于地球的磁场和环境的磁力扰动。 从数据点,确定该组数据点是否对应于其中设备已经以预定的精度保持在水平面上的测量,或者在测量期间相对于水平面检测到设备的倾斜,并且 校正数据点集合以对应于设备以预定义的精度保持在水平面上的测量。 如果该组数据点对应于设备以预定精度保持在水平面上的测量或者已经执行了该组数据点的所述校正,则通过使用干扰校正来定义新的罗盘方向 在所述数据点集的基础上做出。 本发明实现了显示精确方向的实用方法。
    • 27. 发明授权
    • Outdoor computer
    • 户外电脑
    • US07324002B2
    • 2008-01-29
    • US11012219
    • 2004-12-16
    • Jari Iso-HeikoTapio SavolainenTerho Lahtinen
    • Jari Iso-HeikoTapio SavolainenTerho Lahtinen
    • G01W1/00
    • G01C5/00G01W1/10
    • A method for implementing a weather alarm in an outdoor computer includes defining atmospheric-pressure data repeatedly, defining altitude data repeatedly and essentially simultaneously with the atmospheric-pressure data, with the aid of a satellite positioning system, and converting both measured variables into the same measurement unit, either pressure or altitude. The difference between the converted variables is determined and is stored as a reference value, the difference between the converted variables is repeatedly monitored, and when the difference changes by more than a preset limit-value relative to the reference value, a weather alarm is given. Also an apparatus for performing the method.
    • 一种用于在户外计算机中实现天气报警的方法包括:重复定义大气压力数据,借助于卫星定位系统,重复定义高空数据并与大气压数据基本同时地定义高度数据,并将两个测量变量转换为相同的 测量单位,压力或高度。 确定转换变量之间的差异并将其存储为参考值,重复监视转换变量之间的差异,并且当差值相对于参考值改变超过预设极限值时,给出天气报警 。 也是用于执行该方法的装置。