基于MSP430的超低功耗电容式涡街流量计  

ULP Smart Capacitance Vortex Flowmeter Based on MSP430

作　　者：汤剑[1] 李昌禧[1] 李跃忠[1] 

机构地区：[1]华中科技大学控制科学与工程系,武汉430074

出　　处：《自动化与仪表》2007年第1期21-23,共3页Automation & Instrumentation

摘　　要：介绍了超低功耗智能电容式涡街流量计的硬件组成、软件设计和实验测试结果。系统以16位超低功耗单片机MSP430为核心,采用新型环路供电DAC芯片AD421与HART专用调制解调芯片HT20C15,实现了现场测量实时显示以及与HART设备通信等功能。试验结果表明,该系统测量精度高,抗干扰能力强,功耗低,方便易用,降低了使用成本。In this paper,the hardware composition,software design and test conclusion of ultra-low power（ULP）capacitahoe vortex flow-meter based on MSP430 are introduced. The system is cored on 16 bit ULP SCM MSP430,and achieves the functions of real-time display and communication with HART equipment by new type DAC AD421 with the function of loop-powered and special HART modulator-demodulator HT20C15. Test conclusion shows the flowmeter have characteristics of high measurement precision,high anti-interference power,low consumed power and convenience application,meanwhile the cost is greatly reduced.

关 键 词：涡街流量计 超低功耗 环路供电 HART协议 

分 类 号：TP274.5[自动化与计算机技术—检测技术与自动化装置]