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    • 130. 发明申请
    • POWER MEASUREMENT CIRCUIT
    • 功率测量电路
    • US20110291642A1
    • 2011-12-01
    • US12842256
    • 2010-07-23
    • Surinder Pal SINGHKaushik SAHA
    • Surinder Pal SINGHKaushik SAHA
    • G01R1/20
    • H04L67/025G01R19/22G01R21/133H04L41/32
    • A system for power measurement in an electronic device includes a sensing unit, an analog-to-digital converter (ADC) and a controller. The sensing unit senses voltage across a power source and modulates a carrier signal based on the sensed voltage. The ADC converts a combination of the modulated carrier signal and audio signals received by the electronic device to generate a digitized combined signal and provides the digitized combined signal to the controller. The controller separates digitized modulated carrier signal and digitized audio signals. The digitized modulated carrier signal is demodulated to generate an output signal that provides a measure of the power consumed by the electronic device.
    • 电子设备中的功率测量系统包括感测单元,模数转换器(ADC)和控制器。 感测单元感测电源两端的电压,并根据检测到的电压调制载波信号。 ADC转换由电子设备接收的调制载波信号和音频信号的组合,以生成数字化的组合信号,并将数字化的组合信号提供给控制器。 控制器分离数字化调制载波信号和数字化音频信号。 数字化调制载波信号被解调以产生提供电子设备消耗的功率的量度的输出信号。