基于RN8302三相多功能防窃电电能表的设计

摘要

To overcome the shortcomings——simple function and low degree of accuracy——of the meters which are designed to use ADE7758 as the chip to measure electric energy,a new design scheme of the tri-phase multifunctional meter with the ability of preventing electric larceny has been proposed.In this scheme the chips RN8302 and PIC16F877A are used to produce the new meters which can not only measure multiple electric energy parameters to meet various demands,but also trim the parameters in the register to achieve the high measuring accuracy.%　　本文针对采用ADE7758作为电能计量芯片而设计的电表存在着功能简单和精度低等缺点，提出了一种新型数字式三相多功能防窃电电能表的设计方案。该方案采用RN8302芯片和PIC16F877A芯片，不仅能计量多种电能参数以满足不同的实际需求，而且可对芯片内部寄存器的参数进行微调，使其达到很高的计量精度。