摘要
针对油气输送站场现场温湿度监控系统设计了一种低功耗温湿度数据采集节点。利用高性能、低功耗的MSP430F149单片机通过单总线控制DHT11温湿度传感器,实现油气站场内的温湿度数据采集,自定义设计MCU主程序,在满足数据可靠传输的同时,将单片机LPM3低功耗功能及Timer-A定时器的中断功能合理搭配使用。测试结果表明,基于MSP430F149定时温湿度采集节点运行电流降低了27.38 mA,在同容量、同放电深度的蓄电池供电下,蓄电池维持基于MSP430F149定时温湿度采集节点正常工作的最大持续工作时间约为传统实时采集节点的3倍。
In this paper,a low-power temperature and humidity data acquisition node is designed for the on-site temperature and humidity monitoring system of oil and gas transmission station.The high-performance and low-power MSP430 F149 single chip microcomputer is used to control the DHT11 temperature and humidity sensor through a single bus to realize the temperature and humidity data acquisition in the oil and gas station.LPM3 low-power function and timer-a timer interrupt function are equipped in the MSP430 F149 single chip microcomputer,to enable the function of data acquisition and transmission.The experimental results show that the operating current of the timing temperature and humidity acquisition node based on MSP430 F149 is reduced by 27.38 mA.Under the same capacity and discharge depth of the power supply,the maximum duration of the battery for maintaining the normal acquisition of the temperature and humidity is about 3 times longer than that of the traditional real-time acquisition node.
作者
黄安贻
徐心怡
HUANG Anyi;XU Xinyi(School of Mechanical and Electronic Engineering,Wuhan University of Technology,Wuhan 430070,China)
关键词
油气输送
温湿度传感器
数据采集
低功耗
oil and gas transportation
temperature and humidity sensor
data acquisition
low power consumption
作者简介
黄安贻(1965-),男,湖北武汉人,武汉理工大学机电工程学院博士,教授.
