基于MSP430的热带花卉无线温湿度传感器节点设计  

Wireless sensor node based on MSP430 for monitoring temperature and humidity in the greenhouse of tropical flowers

作　　者：黄建清[1] 刘德兵[1] 袁琦[2] 高家宝[1] 

机构地区：[1]海南大学应用科技学院,海南儋州571737 [2]海南大学机电工程学院,海南海口570228

出　　处：《电子设计工程》2017年第6期123-126,131,共5页Electronic Design Engineering

基　　金：海南省自然科学基金项目(20153096)

摘　　要：为了实现热带花卉环境参数实时监测,文中设计了一种以MSP430F149为核心的无线温湿度传感器节点。节点通过传感器AM2306采集温湿度数据、n RF905射频芯片无线发送数据、MAX3232芯片将数据发送至PC机、LT1129-3.3和LT1129-5组成的电路提供3.3 V和5 V电源,节点软件以IAR Embedded Workbench为开发环境,采用单片机C语言开发。节点具有体积小、功耗低、测量准确的特点,测试表明,节点平均工作电流约为0.78 m A,温度和湿度的最大相对误差分别为5.78%和1.37%,可以满足热带花卉数据采集的应用要求。To collect data in the greenhouse of tropical flowers, the paper designs a wireless sensor node to monitor temperature and humidity. The node hardware platform is composed of processing module, sensor module, wireless communication, serial communication and power module. The processing module uses a MSP430F149 as the processing core. The sensor module uses AM2306 to measure temperature and humidity in the greenhouse of tropical flowers. The wireless communication module uses an RF905 RF chip and its periphery circuits to receive and send data.. The serial communication module uses an MAX3232 chip to send data to computer. And the power module uses LTl129-3.3 chip, LT1129-5 chip and their periphery circuits to supply 3.3 V and 5 V voltage for node modules. The node software is compiled using C Language in IAR Embedded Workbench. The results demonstrate that the node average operating current is 0.78 mA, and the maximum relative errors of temperature and humidity are about 5.78% and 1.37% respectively. It indicates that the node with characteristics of small volume, low cost and high flexibility, can implement real-time monitoring of parameters in the greenhouse of tropical flowers.

关 键 词：热带花卉 MSP430F149 温湿度 传感器节点 

分 类 号：TN92[电子电信—通信与信息系统]