基于ATT7022B的实时分段三相电度表

Three-phase Ammeter of real-time subsection Based on ATT7022B

本文以实现在超低负荷和正常负荷两种情况都能精确计量为目标,提出了实时分段计量的电能表设计方案。本设计从负荷信号检测端就采取了按负荷的额度进行分段的措施,通过切换控制,将检测到的不同负荷额度信号,基于ATT7022B计量芯片的处理,进行不同量程的计算,进而进行多功能电表所要求的输出处理。实验结果表明,该设计已实现了全量程的精度均衡和精确计量。

To calculate super-low and normal burthen precisely, this text put forward a design project of real-time subsection calculation. From the port of carry signal examination, this design adopts the step of subsection according to the magnitude of the burthen, then through switch-controlling, calculates these signal of different measurement base on the handling of IC ATT7022B, then handles exportation of muhi-function ammeter＇s request. The result of experiment expresses that this design has realized precision-balance and precise calculation of all measurement.