如何簡化高精度多相電能表的設(shè)計

　　Internet of Things（ITT）的團(tuán)隊承諾的高分辨率數(shù)據(jù)，可以analyzed能源監(jiān)測。在一次能源計量是largely約束兩個接口之間的電力公用設(shè)施和客戶的組織，是尋找更詳細(xì)的個人信息從機(jī)器設(shè)備和部件。

　　設(shè)計的激光能量測量子可以是一個重大的挑戰(zhàn)，因為他們需要認(rèn)真注意的模擬信號鏈和復(fù)雜的computational的能力。在的情況下的三相計量應(yīng)用ADI的受害者，一個單芯片解決方案，ade9078，這dramatically simplifies實施方案的效用米和電力監(jiān)控應(yīng)用。

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　　The energy monitoring signal chain

　　Engineers have in the past relied on discrete devices and analog-to-digital converters （ADCs） to build energy meters. The emergence of analog front-end （AFE） ICs allowed engineers to replace complex signal acquisition circuits with a single device that integrated ADCs， amplifiers， and filters into an optimized signal chain. Instead of dealing with the device matching and circuit tuning required by discrete solutions， engineers could rely on the integrated AFE to deliver a properly conditioned signal to an MCU or DSP for calculation of power characteristics.

　　The integration of MCU or DSP cores into specialized metrology AFEs provided developers with an even more effective solution. Using these devices， engineers could rapidly develop residential energy meters for common single-phase power lines.

　　For more complex three-phase energy measurement， developers found few effective options aside from once again building custom signal chains using high-performance multi-channel ADCs and amplifiers. Using this approach， however， developers were left to deal with the challenge of not only building tuned signal chains， but also ensuring synchronization of measurements across each phase. Engineers typically opted instead for polyphase meter designs using a separate AFE for each phase as shown in Figure 1.