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发明公开
EP2222063A1 Automatic activation of speed measurement in mobile device based on available motion 审中-公开
自动的基础上，在便携式装置中检测到的运动激活的速度测量的

Automatic activation of speed measurement in mobile device based on available motion
摘要：
A system and method for speed measurement of a mobile device (300), using a speed sensor (460) such as a satellite navigation system (460) or an accelerometer, does not need such speed sensor (460) to be continually activated. The system and method make use of a monitor (471) for monitoring at least one motion indicium for indicating that the speed of the mobile device (300) is above an initial threshold (112), including but not limited to: monitoring the Doppler shift measurements of a timing signal; monitoring the timing advance of a cellular radio signal; monitoring the number of base stations (511) visible to the mobile device (300); monitoring the frequency of base station handover, however determined; monitoring the level crossings and/or the autocorrelation of an RSSI signal; and/or triangulation of the position of the mobile device (300). When the monitor (471) determines that the mobile device (300) may be travelling in excess of a threshold speed (112), a speed sensor (460) is activated to confirm the indication. If the speed sensor (460) determines that the mobile device (300) is travelling at a speed below a second threshold (171), the speed sensor (460) is deactivated.
摘要（中）：

一种用于在移动设备（300）的速度测量，使用速度传感器（460）的系统和方法：诸如卫星导航系统（460）或在加速度计，不需要搜索速度传感器（460），以被连续地激活。 用于指示所述系统和方法使得使用用于监视至少一个运动标记的监视器（471）的没有所述移动设备（300）的速度高于在初始阈值（112），包括但不限于：监测所述多普勒频移 的定时信号的测量值; 监视蜂窝无线电信号的定时提前; 监视基站的数目（511）可见的移动设备（300）; 监视基站切换的频率但是确定性开采; 监测电平交叉和/或RSSI信号的自相关; 和/或所述移动设备（300）的位置的三角测量。 当监视器（471）bestimmt，DASS模具移动装置（300）可以以超过阈值速度（112）的行进，速度传感器（460）被激活，以确认所述指示。 如果速度传感器（460）bestimmt，DASS模具移动装置（300）在低于第二阈值（171）的速度行驶时，所述速度传感器（460）被去激活。

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