A. 璇剧▼璁捐¤烘枃鎬庝箞鍐欏晩锛
浜.绯荤粺杞浠惰捐
鍥4 绯荤粺绋嬪簭娴佺▼鍥
2.1 绯荤粺绋嬪簭娴佺▼鍥
绯荤粺绋嬪簭娴佺▼鍥惧傚浘4鎵绀恒
2.2 娓╁害閮ㄥ垎杞浠惰捐
DS18B20鐨勪竴绾垮伐浣滃崗璁娴佺▼鏄锛氬垵濮嬪寲鈫扲OM鎿嶄綔鎸囦护鈫掑瓨鍌ㄥ櫒鎿嶄綔鎸囦护鈫掓暟鎹浼犺緭銆傚叾宸ヤ綔鏃跺簭鍖呮嫭鍒濆嬪寲鏃跺簭銆佸啓鏃跺簭鍜岃绘椂搴忋傛晠涓绘満鎺у埗DS18B20瀹屾垚娓╁害杞鎹㈠繀椤荤粡杩囦笁涓姝ラわ細姣忎竴娆¤诲啓涔嬪墠閮借佸笵S18B20杩涜屽嶄綅锛屽嶄綅鎴愬姛鍚庡彂閫佷竴鏉ROM鎸囦护锛屾渶鍚庡彂閫丷AM鎸囦护锛岃繖鏍锋墠鑳藉笵S18B20杩涜岄勫畾鐨勬搷浣溿傚嶄綅瑕佹眰涓籆PU灏嗘暟鎹绾夸笅鎷500寰绉掞紝鐒跺悗閲婃斁锛孌S18B20鏀跺埌淇″彿鍚庣瓑寰16锝60寰绉掑乏鍙筹紝鍚庡彂鍑60锝240寰绉掔殑瀛樺湪浣庤剦鍐诧紝涓籆PU鏀跺埌姝や俊鍙疯〃绀哄嶄綅鎴愬姛銆傜▼搴忎富瑕佸嚱鏁伴儴鍒嗗備笅锛
锛1锛夊垵濮嬪寲鍑芥暟
//璇讳竴涓瀛楄妭鍑芥暟
ReadOneChar(void)
{unsigned char i=0; <br/>unsigned char dat = 0; <br/>for (i=8;i>0;i--) <br/>{ DQ = 0; // 缁欒剦鍐蹭俊鍙 <br/>dat>>=1; <br/>DQ = 1; // 缁欒剦鍐蹭俊鍙 <br/>if(DQ) <br/>dat|=0x80; <br/>delay(4);}
return(dat);}
//鍐欎竴涓瀛楄妭鍑芥暟
WriteOneChar(unsigned char dat)
{unsigned char i=0; <br/>for (i=8; i>0; i--) <br/>{DQ = 0; <br/>DQ = dat&0x01; <br/>delay(5); <br/>DQ = 1; <br/>dat>>=1;}}
锛2锛夎诲彇娓╁害骞惰＄畻鍑芥暟
ReadTemperature(void)
{unsigned char a=0; <br/>unsigned char b=0; <br/>unsigned int t=0; <br/>float tt=0; <br/>Init_DS18B20(); <br/>WriteOneChar(0xCC); // 璺宠繃璇诲簭鍙峰垪鍙风殑鎿嶄綔 <br/>WriteOneChar(0x44); // 鍚鍔ㄦ俯搴﹁浆鎹 <br/>Init_DS18B20(); <br/>WriteOneChar(0xCC); //璺宠繃璇诲簭鍙峰垪鍙风殑鎿嶄綔 <br/>WriteOneChar(0xBE); //璇诲彇娓╁害瀵勫瓨鍣ㄧ瓑锛堝叡鍙璇9涓瀵勫瓨鍣锛 鍓嶄袱涓灏辨槸娓╁害 <br/>a=ReadOneChar(); <br/>b=ReadOneChar(); <br/>t=b; <br/>t<<=8; <br/>t=t|a; <br/>tt=t*0.0625; <br/>t= tt*10+0.5; //鏀惧ぇ10鍊嶈緭鍑哄苟鍥涜垗浜斿叆---姝よ屾病鐢 <br/>锛3锛変富绋嬪簭閮ㄥ垎瑙佸墠 <br/>return(t);}
涓. 缁撴潫璇
AT89C2051鍗曠墖鏈轰綋绉灏忋侀噸閲忚交銆佹姉骞叉壈鑳藉姏寮恒佸圭幆澧冭佹眰涓嶉珮銆佷环鏍间綆寤夈佸彲闈犳ч珮銆佺伒娲绘уソ銆傚嵆浣挎槸闈炵數瀛愯＄畻鏈轰笓涓氫汉鍛橈紝閫氳繃瀛︿範涓浜涗笓涓氬熀纭鐭ヨ瘑浠ュ悗涔熻兘渚濋潬鑷宸辩殑鎶鏈鍔涢噺鏉ュ紑鍙戞墍甯屾湜鐨勫崟鐗囨満搴旂敤绯荤粺銆 鏈鏂囩殑娓╁害鎺у埗绯荤粺鍙鏄鍗曠墖鏈哄箍娉涘簲鐢ㄤ簬鍚勮屽悇涓氫腑鐨勪竴渚嬶紝鐩镐俊璇昏呬細渚濋潬鑷宸辩殑鑱鏄庢墠鏅轰娇鍗曠墖鏈虹殑搴旂敤鏇村姞骞挎硾鍖栥傚彟澶栧规湰渚嬪瓙鍙浠ヤ綔涓浜涙墿灞曪紝鍗曠墖鏈虹殑搴旂敤瓒婃潵瓒婂箍娉,鐢变簬鍗曠墖鏈虹殑杩愮畻鍔熻兘杈冨樊,寰寰闇瑕佸熷姪璁＄畻鏈虹郴缁,鍥犳ゅ崟鐗囨満鍜孭C鏈鸿繘琛岃繙绋嬮氫俊鏇村叿鏈夊疄闄呮剰涔夈傜洰鍓嶆よ捐″凡鎴愬姛搴旂敤浜庨捇浜曟ā鎷熷櫒瀹為獙瀹ゅゆ俯鎺у埗銆
鏈鏂囦綔鑰呭垱鏂拌傜偣锛氶噰鐢ㄧ殑鍗曠墖鏈篈T89C2051鎬т环姣旈珮锛岃屼笖娓╁害浼犳劅鍣―S18B20杞鍖栨俯搴︾殑鏂规硶闈炲父绠娲佷笖绮惧害楂樸佹祴璇曡寖鍥磋緝骞裤
鍙傝冩枃鐚
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[2]鑼冮庡己绛.鍗曠墖鏈鸿瑷C51搴旂敤瀹炴垬闆嗛敠 鍖椾含锛氱數瀛愬伐涓氬嚭鐗堢ぞ 2005
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[4]澶忚矾鏄撶瓑.鐢佃矾鍘熺悊鍥句笌鐢佃矾鏉胯捐℃暀绋 鍖椾含锛氬寳浜甯屾湜鐢靛瓙鍑虹増绀 2002
[5]璧垫櫠.Protel99楂樼骇搴旂敤 鍖椾含锛氫汉姘戦偖鐢靛嚭鐗堢ぞ 2000
[6]鑱傛瘏.鍗曠墖鏈哄畾鏃跺櫒涓鏂鏃堕棿璇宸鐨勫垎鏋愬強琛ュ伩[J] 寰璁＄畻鏈轰俊鎭 2002,18(4):37~38