【正文】 34P0.6/AD633P0.7/AD732P1.01P1.12P1.23PSEN29XTAL218RD/P3.717WR/P3.616TXD/P3.111ALE/PROG30P2.7/A1528P2.6/A1427P2.5/A1326P1.78P1.67P1.56P1.45P1.34P2.4/A1225P2.3/A1124P2.2/A1023P2.1/A922P2.0/A821U?STC89C52 VCC設定時間（前三位）剩余時間（后三位）復位電路振蕩電路單片機電路8位鎖存器38譯碼器40GND20保溫加熱器出煲煮加熱器出選擇輸入120分輸入180分輸入清零輸入70度比較80度比較4D14D2564333154D34D44D5IN4148X54R14R24R34R44RT130K按鍵中斷入3D13D4IN41483S23S33S4VCC3R13R41KGND3S1按鍵電路4R5 33030K電位器4VR1VCC電壓比較器4U1 LM393675GND4R6100K4R7100K4R85.1K4C10.01uF熱敏電阻溫度檢測電路GND4D6IN41484R91K4C2100PGND6位數碼管時間顯示電路6R14.7K測溫輸入 蜂鳴器輸出訊響電路6VT190136B1蜂鳴器GNDVDD2VT19013GND2VD1IN4001繼電器線圈2J12R151功率控制電路2R44.7K2VT290132R3220+10VVDD2C1470u/25VGNDVin1G N D2Vout35VLM7805穩(wěn)壓GNDVCC +5V2C2100u2C30.01uGNDGND12342B1整流橋堆GND2T1電源變壓器2F110AAC220VNL保險絲2K1常開觸點 2C40.01u2C50.001/600V2L1300W2L2100W2R58M2R2100煲煮加熱器保溫加熱器2VS1可控硅GND加熱電路90度比較100度比較測溫微電腦控制藥膳煲的控制部分設計電信0903 李晏 附錄 26 附錄 B： C 語言程序 C 語言程序 include include define uchar unsigned char sbit bwjr=P0^0。s daily life gradually occupy a certain position. This makes the tableware medicated pot gradually bee the electrical equipment family indispensable. Due to the use of singlechip design of product has the characteristics of small volume, low price, plete functions, flexible application, so the chip has been in constant development. This paper studies the timing control of the microcontroller technology to design a Diet pot, to achieve the product39。 temperature control。 // 定義為 “選擇按鍵 ”輸入口 sbit rsaj=P0^3。 //關閉保溫加熱 zfjr=0。s attention, especially diet regimen, with its unique advantages in people39。 medicinal cooker 目錄 i 目 錄 第 1 章 緒論 .......................................................................................................... 1 課題背景 ............................................................................................................................... 1 課題來源與意義 ................................................................................................................. 1 藥膳煲的簡介 .................................................................................................................... 1 研究內容 ............................................................................................................................... 1 擬采用的研究方法 ............................................................................................................... 1 第 2 章 相關知識及原理介紹 .............................................................................. 3 藥膳煲工作原理 ................................................................................................................... 3 單片機介紹 ........................................................................................... 錯誤 !未定義書簽。 // 定義為 “120 分按鍵 ”輸入口 。 單向可控硅的工作原理 ...................................................................................................... 3 單向可控硅的使用注意事項 ............................................................................................... 3 繼電器介紹 ........................................................................................................................... 4 繼電器的工作原理和特性 ................................................................................................... 4 繼電器的 作用 .................................................................................................................... 4 繼電器的 技術參數 ............................................................................................................. 4 繼電器的 參數選擇 ............................................................................................................. 5 繼電器的 測試點 ................................................................................................................. 5 74HC138 38 譯碼器 介紹 ..................................................................................................... 5 74HC245 8 位鎖存器 介紹 .................................................................................................... 6 三端穩(wěn)壓器 LM7805 介紹 .................................................................................................. 6 LM7805在使用時的注意事項 .............................................................................................. 6 LM7805的引腳序號與引腳功能 .......................................................................................... 7 電壓比較器 LM393 介紹 ..................................................................................................... 7 第 3 章 控制電路設計 .......................................................................................... 9 藥膳煲的總電路設計方案 .......................................................................................