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基于ZigBee的多点温度监控系统

2014-07-24刘科峰邓秀勤刘志煌

现代电子技术 2014年14期

刘科峰+邓秀勤+刘志煌

摘 要: 针对传统温度监控系统存在布线困难、线路容易老化等缺点, 开发了一种以CC2430为核心的多点无线温度监控系统。该系统采用ZigBee协议组成树状网络实现各节点之间的数据传输,采用单线数字温度传感器 DS18B20 采集现场温度数据。在给出系统总体结构的基础上, 阐述了系统硬件电路的设计和软件的实现方法。系统具有界面友好、组网灵活、成本低等优点。经测试,该系统取得了较为满意的监控效果。稍加修改,还可广泛应用于各领域的环境参数自动监控。

关键词: ZigBee; CC2430; 温度监控; DS18B20

中图分类号: TN964?34 文献标识码: A 文章编号: 1004?373X(2014)14?0081?03

Multi?point temperature monitoring system based on ZigBee

LIU Ke?feng, DENG Xiu?qin, LIU Zhi?huang

(School of Applied Mathematics, Guangdong University of Technology, Guangzhou 510520, China)

Abstract: A multi?point wireless temperature monitoring system with CC2430 as its core is developed to overcome the shortcomings in traditional system, such as difficult wiring and easily aging circuit. In the system, a tree?shaped network constructed by ZigBee protocol is adopted to implement data transmission among nodes, and the single digital temperature sensor DS18B20 is used to collect on?site temperature data. The overall structure, hardware circuit design and software implementation method are elaborated in this paper. There are many advantages in this new system, such as friendly interface, flexible networking, low cost and so on. A satisfactory monitoring result was achieved in the test of this system. It can also be widely used in automatic monitoring of environmental parameters in various fields.

Keywords: ZigBee; CC2430; temperature monitoring; DS18B20

温度在工农业生产中起着举足轻重的作用,在冶金、医药、食品制造和化学制造等行业尤其显得重要。在适当的温度下生产的产品质量、产量和合格率会大大的提高[1]。传统的温度监控系统大部分是通过有线的方式组网传送数据。但是这种传输方式存在布线麻烦、线路容易老化和网络扩展性差等问题。所以无线温度监控系统越来越受到人们的青睐。

ZigBee是一种新兴的短距离、低功耗、低数据率、低复杂度的无线网络技术[2], 相对于传统的无线网络技术,ZigBee具有支持多跳路由协议、自组网,低功耗,低成本等特点[3?4],主要用于距离短、功耗低且传输速率不高的各种电子设备之间进行数据传输[5]。用ZigBee组成的无线网络取代有线网络是个不错的选择。本文设计的温度监控系统能够在监控端的上位机上对多个位置的温度进行设置、检测和控制。……

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