基于ZigBee 自动抄表的无磁热量表的设计与实现[J].docxVIP

第 23卷第 8期2009年 8月电子测量与仪器学报JOURNAL OF ELECTRONIC MEASUREMENT AND INSTRUMENTVol. 23 No. 8· 95·基于 ZigBee自动抄表的无磁热量表的设计与实现*邵光侯加林吴文峰(山东农业大学机械与电子工程学院,泰安 271018)摘要:采用 MSP430FW427单片机作为热量表的核心处理器。使用 SCANIF模块结合 LC振荡电路实现流量的低功耗无磁测量,用内置比较器使用??-△技术形成一个 16位的高精度 AD结合 PT1000铂电阻进行温度测量,流量温度信息积分后得到热量,分开检验的方式表明该测量方式误差极低,达到国家标准中关于热量表的要求。同时结合 ZigBee模块实现无线抄表方案,ZigBee节点模块采用高性能微控制器 CC2430无线收发模块,移植 ZigBee2006协议栈。通过四个月的运行测试,结果表明该系统具有功耗低、传输准确、抗干扰性强等显著特点,具有广阔的推广价值和经济价值。关键词: ZigBee2006；自动抄表；无磁热量表中图分类号: TP393.17文献标识码: A国家标准学科分类代码: 510.99Design and implementation of non-magnetic heat meter based onZigBee automatic meter readingShao GuangHou JialinWu Wenfeng(Mechanical and Electronic Engineering College, Shandong Agricultural University, Taian 271018, China)Abstract: MSP430 ultra-low power 16-bit single-chip microcomputer is used as the core of heat meter. Thelow-power, non-magnetic measurement of flow is realized using SCANIF module and combining with LC concussioncircuit. A built-in comparator andΣ? technology are used to form a high accurate 16-bit A/D convertor, and com-bining with PT1000 platinum resistance the temperature is measured. The heat is obtained after the integral of flowtemperature information. The test shows that the error of this measurement method is extreme low and meets the re-quirements of heat meter in the National Standard. Combining with ZigBee module to implement wireless reading me-ter program, ZigBee node module uses high-performance microcontroller module CC2430 wireless transmission mod-ule and transplants ZigBee2006 protocol stacks. Four months’ running and testing is carried out, and the results showthat the system has outstanding benefits of low power consumption, low transmission error rate and high anti-interfer-ence performance.Keywords: ZigBee2006; automatic meter reading; non-magnetic heat meter1引言目前,我国大部分地区的供暖收费系统仍按用户的住宅面积计费,而不是按用户实际用热量计算,这种计费方式会造成大量的能源浪费。同时,即使用户家中无人仍然要缴纳同样的取暖费。如果按照用户实际消耗热量来计费则相对比较科学合理,也可以被用户和供热部门认可。传统的抄表方式大多是上门抄表或者使用普通无线模块抄表,上门抄表容易出现少抄、漏抄和错抄现象,