基于单片机的电表抄表系统

《基于单片机的电表抄表系统》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、基于单片机的电表抄表系统摘要自动抄表是指采用通信和计算机网络等技术自动读取和处理表计数据。发展电能自动抄表技术是提高用电管理水平的需要，也是网络和单片机技术迅速发展的必然。采用自动抄表技术，不仅能节约人力资源，更重要的是可提高抄表的准确性，减少因估计或誊写而造成账单出错，使供用电管理部门能及时准确获得数据信息。本例中介绍的抄表方案可方便移植到煤气表、水表等各种智能抄表系统。本例抄表系统主要由主站端数据采集计算机、客户端基于单片机的抄表模块、计量电表三部分组成。客户终端单片机模块和数据采集计算机通过RS

2、-485串行通信口连接，实现数据传输。本例中被测量的电表为威胜3型电表。本例主要介绍客户端基于单片机的电表抄表终端的设计和实现方案在设计本例抄表系统时，以上功能均需要满足，其中主要部分是供电方式设计、数据掉电保护。功能设计、终端抄表模块与数据采集计算机通信协议设计、实时时钟功能设计。其中终端单片机抄表模块主要功能如下：采用三相四线（3ｘ220/380V）供电方式，在三相交流电压断一相或二相的条件下，交流电源能维持终端正常工作，并且系统具有备用电池供电功能;具有实时测量用户用电电量功能;具有掉电数据保护

3、功能，能保存用户用电电量信息。支持DL/T—645电表通信规约。终端和数据采集计算机通过RS-485通信，终端和主站通信具备数据完整性认证机制以保。终端具有实时时钟功能，并且有对时功能。关键词：单片机；抄表系统；串行通信；目录摘要Abstract1绪论·······························································································································

4、······················11.1本课题的研究背景··················································································································11.2电表抄表系统的国内外研究动态·······················································································

5、···11.3电表抄表系统的目的及意义··································································································32系统的总体设计·······························································································································

6、·32.1系统的组成······························································································································412.2电表抄表系统的功能说明及论文要求···················································································42.3电表抄表的关键问题

7、···············································································································53系统的电路设计·································································································································63.1

8、单片机简介······························································································································63.2技术方面具体体现······················································································