A. 璇劇▼璁捐¤烘枃鎬庝箞鍐欏晩錛
浜.緋葷粺杞浠惰捐
鍥4 緋葷粺紼嬪簭嫻佺▼鍥
2.1 緋葷粺紼嬪簭嫻佺▼鍥
緋葷粺紼嬪簭嫻佺▼鍥懼傚浘4鎵紺恆
2.2 娓╁害閮ㄥ垎杞浠惰捐
DS18B20鐨勪竴綰垮伐浣滃崗璁嫻佺▼鏄錛氬垵濮嬪寲鈫扲OM鎿嶄綔鎸囦護鈫掑瓨鍌ㄥ櫒鎿嶄綔鎸囦護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繪椂搴忋傛晠涓繪満鎺у埗DS18B20瀹屾垚娓╁害杞鎹㈠繀欏葷粡榪囦笁涓姝ラわ細姣忎竴嬈¤誨啓涔嬪墠閮借佸笵S18B20榪涜屽嶄綅錛屽嶄綅鎴愬姛鍚庡彂閫佷竴鏉ROM鎸囦護錛屾渶鍚庡彂閫丷AM鎸囦護錛岃繖鏍鋒墠鑳藉笵S18B20榪涜岄勫畾鐨勬搷浣溿傚嶄綅瑕佹眰涓籆PU灝嗘暟鎹綰誇笅鎷500寰縐掞紝鐒跺悗閲婃斁錛孌S18B20鏀跺埌淇″彿鍚庣瓑寰16鍀60寰縐掑乏鍙籌紝鍚庡彂鍑60鍀240寰縐掔殑瀛樺湪浣庤剦鍐詫紝涓籆PU鏀跺埌姝や俊鍙瘋〃紺哄嶄綅鎴愬姛銆傜▼搴忎富瑕佸嚱鏁伴儴鍒嗗備笅錛
錛1錛夊垵濮嬪寲鍑芥暟
//璇諱竴涓瀛楄妭鍑芥暟
ReadOneChar(void)
{unsigned char i=0; <br/>unsigned char dat = 0; <br/>for (i=8;i>0;i--) <br/>{ DQ = 0; // 緇欒剦鍐蹭俊鍙 <br/>dat>>=1; <br/>DQ = 1; // 緇欒剦鍐蹭俊鍙 <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;}}
錛2錛夎誨彇娓╁害騫惰＄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); // 璺寵繃璇誨簭鍙峰垪鍙風殑鎿嶄綔 <br/>WriteOneChar(0x44); // 鍚鍔ㄦ俯搴﹁漿鎹 <br/>Init_DS18B20(); <br/>WriteOneChar(0xCC); //璺寵繃璇誨簭鍙峰垪鍙風殑鎿嶄綔 <br/>WriteOneChar(0xBE); //璇誨彇娓╁害瀵勫瓨鍣ㄧ瓑錛堝叡鍙璇9涓瀵勫瓨鍣錛 鍓嶄袱涓灝辨槸娓╁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; //鏀懼ぇ10鍊嶈緭鍑哄苟鍥涜垗浜斿叆---姝よ屾病鐢 <br/>錛3錛変富紼嬪簭閮ㄥ垎瑙佸墠 <br/>return(t);}
涓. 緇撴潫璇
AT89C2051鍗曠墖鏈轟綋縐灝忋侀噸閲忚交銆佹姉騫叉壈鑳藉姏寮恆佸圭幆澧冭佹眰涓嶉珮銆佷環鏍間綆寤夈佸彲闈犳ч珮銆佺伒媧繪уソ銆傚嵆浣挎槸闈炵數瀛愯＄畻鏈轟笓涓氫漢鍛橈紝閫氳繃瀛︿範涓浜涗笓涓氬熀紜鐭ヨ瘑浠ュ悗涔熻兘渚濋潬鑷宸辯殑鎶鏈鍔涢噺鏉ュ紑鍙戞墍甯屾湜鐨勫崟鐗囨満搴旂敤緋葷粺銆 鏈鏂囩殑娓╁害鎺у埗緋葷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鎬俊璇昏呬細渚濋潬鑷宸辯殑鑱鏄庢墠鏅轟嬌鍗曠墖鏈虹殑搴旂敤鏇村姞騫挎硾鍖栥傚彟澶栧規湰渚嬪瓙鍙浠ヤ綔涓浜涙墿灞曪紝鍗曠墖鏈虹殑搴旂敤瓚婃潵瓚婂箍娉,鐢變簬鍗曠墖鏈虹殑榪愮畻鍔熻兘杈冨樊,寰寰闇瑕佸熷姪璁＄畻鏈虹郴緇,鍥犳ゅ崟鐗囨満鍜孭C鏈鴻繘琛岃繙紼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
鏈鏂囦綔鑰呭壋鏂拌傜偣錛氶噰鐢ㄧ殑鍗曠墖鏈篈T89C2051鎬т環姣旈珮錛岃屼笖娓╁害浼犳劅鍣―S18B20杞鍖栨俯搴︾殑鏂規硶闈炲父綆媧佷笖綺懼害楂樸佹祴璇曡寖鍥磋緝騫褲
鍙傝冩枃鐚
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[2]鑼冮庡己絳.鍗曠墖鏈鴻璦C51搴旂敤瀹炴垬闆嗛敠 鍖椾含錛氱數瀛愬伐涓氬嚭鐗堢ぞ 2005
[3]璋嫻╁己.C璇璦紼嬪簭璁捐★紙絎浜岀増錛 鍖椾含錛氭竻鍗庡ぇ瀛﹀嚭鐗堢ぞ 1999
[4]澶忚礬鏄撶瓑.鐢佃礬鍘熺悊鍥句笌鐢佃礬鏉胯捐℃暀紼 鍖椾含錛氬寳浜甯屾湜鐢靛瓙鍑虹増紺 2002
[5]璧墊櫠.Protel99楂樼駭搴旂敤 鍖椾含錛氫漢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墮棿璇宸鐨勫垎鏋愬強琛ュ伩[J] 寰璁＄畻鏈轟俊鎮 2002,18(4):37~38