电子式热分配表的设计开发

文档编号:JD555 文档字数:22349,页数:54

摘  要
本文主要讨论了热分配表特性、分流系数的影响以及有关设计参数的选择，并提出了一些设计新概念。实现热计量收费后，供热系统增加了可调性，各个散热器和用户安装了温控阀。用户可以根据自己的需要，随时调节散热装置的散热量。供热系统的基本情况发生了变化，因此应对原来的供热设计参数和设计方法进行修正，以适用热计量收费后的新情况。对目前国内、外所使用的各种热计量仪表进行分析与比较，指出在我国集中供热的现有条件下，电子式热分配表是一种比较使用的热计量表，是测量温度与相应时间的电子装置，其热数值是散热器表面测量的特征温度对时间积分的近似值或是散热器表面温度与室内温度的差值对时间的积分，是计算各户散热器依据也是进行计算各户热费的依据。电子式热分配表按照其测量原理以及探头的数量的不同，可以分为两探头式电子式热分配表和多探头式电子式热分配表。本文档主要针对两探头式电子式热分配表在热计量中的应用进行设计开发。以超底功耗单片机MSP430F149为核心，研究一款可实现读数简单、维护工作量小、便于联网远程抄表。集中供热按实际用热量的多少向用户收取采暖费是合理的，也是节能的重要措施。
关键词：热分配表；两探头式电子式热分配表；单片机MSP430F149；无磁流量计集中供热；电子式热分配表

  Abstract
This article mainly discussed the hot distribution list characteristic, the divergence coefficient influence as well as the related design variable choice, and proposed some design new concept. After realizing the hot measurement charge, the heating system increased the controllability, each radiator and the customer set-up have controlled the valve warm. The user may according to own need, momentarily adjust the heat dissipating arrangement the heat dissipating capacity. The heating system's basic situation has had the change, therefore deals with the original heating design variable and the design method carries on the revision, after is suitable the hot measurement charge new situation. To each kind of hot metering device which present domestic, outside uses carries on analyzes and compares, pointed out that under our country central heat supply's existing condition, the electronic formula hot distribution list is one kind of comparison use hot gauge table, Is surveys the temperature and the corresponding time electronic installation, its hot value is the radiator surface survey characteristic temperature to the time integral approximate value perhaps the radiator surface temperature and the indoor temperature differential value to the time integral, is calculates each household radiator basis is also carries on calculates each household hot expense the basis. The electronic formula hot distribution list according to its survey principle as well as probe head's quantity's difference, may divide into two probe head type electronic formula hot distribution list and the multi-probe head type electronic formula hot distribution list. Take ultra bottom power loss monolithic integrated circuit MSP430F149 as the core, studies one section to be possible to realize the reading to be simple, the maintenance work load small, is advantageous for the networking long-distance to copy the table. The central heat supply charges the heating expense according to the reality with thermal how many to the user is reasonable, is also the energy conservation important measure.
Keywords: Hot distribution list; Two probe head type electronic formula hot distribution list; Monolithic integrated circuit MSP430F149; Electronic formula hot distribution list目  录
中文摘要 I
Abstract II
1 绪论 1
    1.1概述 1
      1.1.1研究背景 1
      1.1.2国内外的研究现状 2
1.1.3本课题的研究意义 2
2 电子式热分配表介绍 4
    2.1电子式热分配表的结构 4
    2.2电子式热分配表的特点 4
2.3电子式热分配表的测量原理 5
    2.4电子式热分配表的分类  6
    2.5电子式热分配表的应用 6
    2.6电子式热分配表使用注意事项 7
3 系统总体方案设计 8
3.1电子式热分配表的设计开发 8
    3.2 设计方案  9
3.2.1两探头式电子式热分配表设计方案一 9
3.2.2两探头式电子式热分配表设计方案二 9
3.3方案比较 10
4 系统硬件设计 11
    4.1 系统硬件功能描述 11
4.2 系统硬件设计 11
  4.2.1单片机MSP430F149介绍 11
4.2.2串行通信电路 15
4.2.3报警电路 21
4.2.4测温电路 21
4.2.5电源复位电路 22
4.2.6显示电路 23
5 系统软件设计 25
   5.1系统软件设计原理 25
   5.2系统软件编程  25
     5.2.1采集模块程序 25
     5.2.2显示模块程序 28
     5.2.3报警模块程序 30
     5.2.4串口通信模块程序 31
5.2.5主处理模块程序 32
结论 39
致谢 40
参考文献 41
附录 42
外文翻译 46

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