智能气体流量计若干关键技术的研究  

Intelligent gas meter number of key technologies

作　　者：李翠霞[1] 姜印平[1] 王威涛[1] 张振波 

机构地区：[1]天津大学电气工程与自动化学院,天津300072 [2]中海石油有限公司深圳分公司西江作业区,深圳518067

出　　处：《自动化与仪器仪表》2014年第9期5-8,共4页Automation & Instrumentation

摘　　要：为了实时监测气体的流速和流量,本文设计了以MSP430F149为控制核心,存储器、时钟、温度压力检测模块、双电源供电模块、液晶显示模块等模块为外围电路的硬件系统。该系统使用双电源供电,能满足不同应用场合的用户需求,而且降低了系统功耗。并提出了一种降低液晶显示器功耗的解决方案。设计4mA-20mA信号输出模块,提高了系统的精度和抗干扰能力,且输出公式的片内计算,以及功能模块开关的可编程,提高了系统的通用性。In order to realize real-time monitoring of the gas velocity and flow, the paper designs a system which control MSP430F149. The peripheral circuit of the system is circled by memory, clock, temperature and pressure detection module, double power supply module, LCD module etc. The use of double power supply makes the system satisfied the users＇ requirements in different application field, and reduced the system power consumption. A new solution which reduces the power consumption of the system effectively have been put forward. 4mA-20mA output improves the precision and anti-interference ability of the system, and it is calculated on chip and programmable settings of each function module switch, which increase the versatility of the system.

关 键 词：MSP430F149 涡轮流量计 低功耗 双电源供电 液晶显示 

分 类 号：TP29[自动化与计算机技术—检测技术与自动化装置]