摘要
针对目前市场上单相电能表的情况,该文设计了普通用户使用的低功耗的单相电能表。给出了以MSP430FE427为控制芯片以及电能计量芯片的电能表的总体方案。硬件方面重点介绍了的电能信息采集电路和电源电路的总体设计及计算。根据430内部ESP的工作原理,推导出了电压、电流功率及电能的计算公式。软件方面,重点介绍了单片机MSP430FE427内部的ESP模块的运行,并给出了程序流程图。最后,描述了该电能表的误差修正。
View of the current situation on the market of single-phase meter,the paper design the low-power single-phase energy meter for user.It is given to MSP430FE427 control and energy metering IC chip energy meter overal scheme.Hardware focuses on the overal design and calculation of energy information acquisi-tion circuit and power supply circuit.According to the principle of internal ESP deduced formulas voltage,cur-rent,power and energy.Software,focusing on the operation of the internal microcontrol er MSP430FE427 ESP modules,and gives the program flow chart.Final y,the description of the meter error correction.
出处
《电子质量》
2015年第11期19-23,共5页
Electronics Quality
