基于单片机通信技术的多参数分布式显示系统的设计  

Design of Multi Parameter Distributed Display System Based on MCU Communication Technology

作　　者：王鹏宇 陈东阳[1] 杨建飞 

机构地区：[1]石家庄铁道大学,河北石家庄050043

出　　处：《廊坊师范学院学报（自然科学版）》2017年第3期53-56,共4页Journal of Langfang Normal University(Natural Science Edition)

摘　　要：设计了一款三相变压器电参数监测系统,以MSP430F149作为主控芯片,ATT7022B为电参数采集计量芯片,RS485智能数码管作为电参数的显示装置。介绍了信号调理电路和RS485接口电路的设计,阐述了MSP430与ATT7022B之间的SPI通信流程以及MSP430与智能数码管之间通过Modbus-RTU协议通信的链路控制方案,关注了实际应用中所要注意的问题,实现了对三相变压器电压电流有效值、电流夹角、功率因数等参数的分布式显示,具有应用灵活、成本低廉、开发周期短等特点。An electrical parameter monitoring system for three-phase transformer is designed,MSP430F149 is used as the MCU,ATT7022B is used as the electric parameter sample and measure unit,and intelligent digital tube which has RS485 interface is used as the display unit.The design of signal conditioning circuit and RS485 interface circuit is introduced,the SPI communication between MSP430 and ATT7022B is expounded,the link control program between MSP430 and intelligent digital tube through Modbus-RTU is illustrated,and several issues that should be focus on in practical application are noticed.The distributed display of voltage,current and power factor of three-phase transformer is realized.The designed system has the advantages of flexible application,low cost and short development cycle,etc.

关 键 词：MSP430 ATT7022B MODBUS 分布式显示 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]