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    • 9. 发明申请
    • ENERGY MONITOR FOR A POWER SOURCE
    • 用于电源的能源监测器
    • US20150091550A1
    • 2015-04-02
    • US14040346
    • 2013-09-27
    • EFRAIM ROTEMNIR ROSENZWEIGJEFFREY A. CARLSONPHILIP R. LEHWALDERNADAV SHULMANDORON RAJWAN
    • EFRAIM ROTEMNIR ROSENZWEIGJEFFREY A. CARLSONPHILIP R. LEHWALDERNADAV SHULMANDORON RAJWAN
    • G01R19/252
    • G01R31/3648G01R21/133G01R22/10G01R31/3624
    • Examples are disclosed for an integrated circuit (IC) device coupled to a battery-operated power supply unit, such as an IC in a mobile computing device or wireless phone, to accurately determine energy usage drawn from the power supply unit under rapidly dynamic circumstances. A current sense signal of a power line from the power supply unit is digitized. The digitized current sense is added to an accumulator at a rate that is approximately proportional to a voltage of the power line from the power supply unit. The accumulator is then outputted and scaled to units relevant to energy measurements. The energy measurement is used to estimate remaining battery life. Triggering the digitization of the current sense signal may be by use of a pulse generation circuit, or by use of an overflow indicator of an accumulator for a digitized voltage sense signal. Other examples are described and claimed.
    • 公开了用于耦合到诸如移动计算设备或无线电话中的IC的电池供电单元的集成电路(IC)设备的实例,以在快速动态的情况下精确地确定从电源单元获取的能量使用。 来自电源单元的电力线的电流感测信号被数字化。 数字化电流检测以与来自电源单元的电力线的电压近似成比例的速率被添加到累加器。 然后将累加器输出并缩放到与能量测量相关的单位。 能量测量用于估计剩余电池寿命。 触发电流检测信号的数字化可以通过使用脉冲发生电路,或者通过使用累加器的溢出指示符来进行数字化的电压检测信号。 其他的例子被描述和要求保护。