公开(公告)号：US07450332B2

公开(公告)日：2008-11-11

申请号：US11166770

申请日：2005-06-24

申请人： Fabio Pasolini ,  Michele Tronconi ,  Wen Lin ,  William R. Raasch

发明人： Fabio Pasolini ,  Michele Tronconi ,  Wen Lin ,  William R. Raasch

IPC分类号： G11B21/02 ,  G11B19/02

CPC分类号： G01P15/0891 ,  G01P15/18 ,  G11B19/04

摘要： In an integrated free-fall detection device for a portable apparatus an acceleration sensor generates acceleration signals correlated to the components of the acceleration of the portable apparatus along three detection axes. A dedicated purely hardware circuit connected to the acceleration sensor generates a free-fall detection signal in a continuous way and in real-time. The free-fall detection signal has a first logic value in the event that the acceleration signals are simultaneously lower than a respective acceleration threshold, and is sent to a processor unit of the portable apparatus as an interrupt signal to activate appropriate actions of protection for the portable apparatus. Preferably, the acceleration sensor and the dedicated purely hardware circuit are integrated in a single chip and the acceleration sensor is made as a MEMS.

摘要翻译： 在用于便携式装置的集成自由落体检测装置中，加速度传感器产生与沿着三个检测轴的便携式装置的加速度的分量相关的加速度信号。 连接到加速度传感器的专用纯硬件电路以连续的方式实时生成自由落体检测信号。 在加速度信号同时低于相应的加速度阈值的情况下，自由落体检测信号具有第一逻辑值，并且作为中断信号被发送到便携式设备的处理器单元，以激活适当的保护动作 便携式设备。 优选地，加速度传感器和专用纯硬件电路集成在单个芯片中，并且加速度传感器被制成为MEMS。