公开(公告)号：US5764034A

公开(公告)日：1998-06-09

申请号：US630359

申请日：1996-04-10

申请人： George Bowman ,  Grace Esche

发明人： George Bowman ,  Grace Esche

IPC分类号： A61M5/00 ,  A61M5/14 ,  G01R31/36 ,  H02J7/00 ,  H42J7/04 ,  A61M31/00

CPC分类号： G01R31/3624 ,  A61M5/14 ,  G01R31/3648 ,  G01R31/3682 ,  A61M5/1413 ,  G01R31/361 ,  Y10S320/21

摘要： The present invention provides an estimate of the amount of time left on the battery by monitoring not only the voltage available from the battery, but also the amount of current flowing from the battery. It has been found that periodic sampling of the battery voltage and current drain enables accurate battery monitoring. The sampling technique alternates between sampling battery voltage and sampling current drain. An electric circuit is provided which enables the cost-effective sampling to occur. A method is then applied to the sampling signals by a microprocessor which determines the amount of time left under battery power. In a preferred embodiment, a graphic representation is provided of the amount of battery time left.

摘要翻译： 本发明通过监视电池可用的电压以及从电池流出的电流量来提供电池剩余时间的估计。 已经发现，电池电压和电流消耗的周期性采样使得能够精确地进行电池监视。 采样技术在采样电池电压和采样电流消耗之间交替。 提供了一种能够进行成本有效的采样的电路。 然后通过微处理器将取样信号应用于一种方法，微处理器确定电池电量剩余时间。 在优选实施例中，提供剩余电池时间量的图形表示。