電子式熱分配表的設計開發

電子機電論文編號:JD555 論文字數:22349,頁數:54

目  錄
中文摘要 I
Abstract II
1 緒論 1
    1.1概述 1
      1.1.1研究背景 1
      1.1.2國內外的研究現狀 2
1.1.3本課題的研究意義 2
2 電子式熱分配表介紹 4
    2.1電子式熱分配表的結構 4
    2.2電子式熱分配表的特點 4
2.3電子式熱分配表的測量原理 5
    2.4電子式熱分配表的分類  6
    2.5電子式熱分配表的應用 6
    2.6電子式熱分配表使用注意事項 7
3 系統總體方案設計 8
3.1電子式熱分配表的設計開發 8
    3.2 設計方案  9
3.2.1兩探頭式電子式熱分配表設計方案一 9
3.2.2兩探頭式電子式熱分配表設計方案二 9
3.3方案比較 10
4 系統硬件設計 11
    4.1 系統硬件功能描述 11
4.2 系統硬件設計 11
  4.2.1單片機MSP430F149介紹 11
4.2.2串行通信電路 15
4.2.3報警電路 21
4.2.4測溫電路 21
4.2.5電源復位電路 22
4.2.6顯示電路 23
5 系統軟件設計 25
   5.1系統軟件設計原理 25
   5.2系統軟件編程  25
     5.2.1采集模塊程序 25
     5.2.2顯示模塊程序 28
     5.2.3報警模塊程序 30
     5.2.4串口通信模塊程序 31
5.2.5主處理模塊程序 32
結論 39
致謝 40
參考文獻 41
附錄 42
外文翻譯 46

摘  要
本文主要討論了熱分配表特性、分流系數的影響以及有關設計參數的選擇，并提出了一些設計新概念。實現熱計量收費后，供熱系統增加了可調性，各個散熱器和用戶安裝了溫控閥。用戶可以根據自己的需要，隨時調節散熱裝置的散熱量。供熱系統的基本情況發生了變化，因此應對原來的供熱設計參數和設計方法進行修正，以適用熱計量收費后的新情況。對目前國內、外所使用的各種熱計量儀表進行分析與比較，指出在我國集中供熱的現有條件下，電子式熱分配表是一種比較使用的熱計量表，是測量溫度與相應時間的電子裝置，其熱數值是散熱器表面測量的特征溫度對時間積分的近似值或是散熱器表面溫度與室內溫度的差值對時間的積分，是計算各戶散熱器依據也是進行計算各戶熱費的依據。電子式熱分配表按照其測量原理以及探頭的數量的不同，可以分為兩探頭式電子式熱分配表和多探頭式電子式熱分配表。本論文主要針對兩探頭式電子式熱分配表在熱計量中的應用進行設計開發。以超底功耗單片機MSP430F149為核心，研究一款可實現讀數簡單、維護工作量小、便于聯網遠程抄表。集中供熱按實際用熱量的多少向用戶收取采暖費是合理的，也是節能的重要措施。
關鍵詞：熱分配表；兩探頭式電子式熱分配表；單片機MSP430F149；無磁流量計集中供熱；電子式熱分配表

  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