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涓婂紡涓�锛孯T锛氳娓�(c猫)閴戦浕闃诲偝鎰熷櫒闆婚樆鍊�锛況锛氬偝鎰熷櫒寮曠窔闆婚樆鍊硷紱k锛氶亱(y霉n)绠楁斁澶у櫒绶氭�ф斁澶х郴绲�(t菕ng)锛堥�氬父鐢卞鐩婇浕闃籖g瑷�(sh猫)瀹氾級锛沄OUT锛氶亱(y霉n)绠楁斁澶у櫒杓稿嚭闆诲鍊�銆�

寰烇紙2锛夊紡涓彲浠ョ湅鍑�锛岀敤鍏╃窔鍒跺偝杓�锛屾渻(hu矛)甯朵締2r鐨勬脯(c猫)閲忚宸�傛脯(c猫)閲忕郴绲�(t菕ng)涓敤鐨勫偝杓哥窔姣忕背闆婚樆绱勭偤0.061 惟锛�2r鐐�0.122 惟銆傚亣瑷�(sh猫)绯荤当(t菕ng)涓脯(c猫)閲忛浕闃昏垏娓�(c猫)閲忛浕璺殑寮曠窔鏈�50 m闀�(zh菐ng)锛屽墖寮曠窔闆婚樆鐢�(ch菐n)鐢熺殑瑾ゅ樊灏囬仈(d谩)鍒�3.05 惟锛屽嵆婧害娓�(c猫)閲忚宸皣閬�(d谩)鍒�7.6鈩冿紙绯荤当(t菕ng)涓墤闆婚樆姣忚畩鍖�1鈩冩檪(sh铆)鐨勯浕闃昏畩鍖栫磩鐐�0.398 惟宸﹀彸锛夈��

鍙锛屽湪娓�(c猫)閲忕郴绲�(t菕ng)鑸囧偝鎰熷櫒涔嬮枔璺濋洟杓冮仩(yu菐n)鏅�(sh铆)锛屽墖绶氶浕闃籸灏�(du矛)閴戦浕闃婚噰闆嗙簿搴︾殑褰遍熆闈炲父澶�锛屽洜姝ゅ叐绶氬埗閴戦浕闃诲儏閬╁悎浜庡紩绶氳窛闆㈡瘮杓冭繎锛屾脯(c猫)閲忕簿搴﹁姹備竴鑸殑鍫�(ch菐ng)鍚�銆�

3 涓夌窔鍒堕浕闃绘脯(c猫)閲忛浕璺�

3.1 鎯犳柉閫氶浕姗嬶紙Wheatstone Bridge锛�

 

鐣�(d膩ng)闆婚樆姗嬮仈(d谩)鍒板钩琛�锛岀敱寮忥紙3锛夊彲浠ョ湅鍑猴紝閫欐檪(sh铆)鐒¤珫婵�鍕�(l矛)婧愭槸闆绘祦鍨嬮倓鏄浕婧愬瀷锛屼篃鐒¤珫婵�鍕�(l矛)婧愮殑澶у皬锛孷0鍧囪几鍑虹偤闆�銆傚洜姝�锛屽鏋淩2/R3鏄竴鍊�(g猫)鍥哄畾绯绘暩(sh霉)K锛屽墖鐣�(d膩ng)R1=K脳R4鏅�(sh铆)锛岄浕姗�?q奴)鈶(d谩)鍒板钩琛�锛屽嵆鏈夛細Vo=0銆�

閫欑ó骞宠　鍊兼脯(c猫)閲忔柟娉曢�氬父鐢ㄥ湪鍙嶉鎺у埗绯荤当(t菕ng)涓�锛岀暥(d膩ng)姗嬭噦涓婄殑闆婚樆鍗充娇鍛堢従(xi脿n)闈炲父寰皬鐨勮畩鍖栦篃鏈�(hu矛)鍙嶆槧鍦ㄨ几鍑洪浕澹撶殑鏀硅畩锛岄�氶亷鐩�(ji膩n)娓�(c猫)姗嬫槸鍚﹀钩琛″彲浠ュ(sh铆)鏅�(sh铆)鐩�(ji膩n)娓�(c猫)鍌虫劅鍣ㄧ洠(ji膩n)娓�(c猫)灏�(du矛)璞★紙鍔�銆佹韩搴︾瓑锛夌殑璁婂寲鎯呮硜銆傚皣闆绘⿱鐨勮几鍑洪浕澹揤O鍋氱偤鍩�(zh铆)琛屾(j墨)妲�(g貌u)鐨勫弽楗嬩俊铏�(h脿o)锛屽(sh铆)鏅�(sh铆)鐩�(ji膩n)娓�(c猫)鍩�(zh铆)琛屽亸宸�锛屼笉鏂蜂慨姝ｅ煼(zh铆)琛屾寚浠ゃ�傚父鐢ㄤ簬鍔涚煩娓�(c猫)閲�銆侀浕鐔辫(di脿o)绡�(ji茅)鎺у埗鍣ㄩ牁(l菒ng)鍩�銆�

閫氬父鎯呮硜涓�锛屾垜鍊戣獚(r猫n)鐐烘縺鍕�(l矛)婧怴R鏄竴鍊�(g猫)鍥哄畾鍊�锛岀敱寮忥紙1锛夊彲浠ョ湅鍑猴紝姗嬭几鍑洪浕澹揤O鐨勫ぇ灏忚垏婵�鍕�(l矛)闆绘簮VR鍛堢窔鎬ф瘮渚嬮棞(gu膩n)绯�锛屽洜姝よ┎娓�(c猫)閲忕郴绲�(t菕ng)鐨勭簿搴︽案閬�(yu菐n)涓嶅彲鑳芥瘮婵�鍕�(l矛)闆绘簮鐨勭簿搴﹂珮銆�

3.2 涓夌窔鍒跺紩绶氶潪骞宠　闆绘⿱娓�(c猫)閲忛浕璺�

鐢辨儬鏂壒闆绘⿱鐞嗚珫鍙煡锛岃嫢闆绘⿱宸ヤ綔鏅�(sh铆)锛岄浕姗嬬殑4鍊�(g猫)姗嬭噦涓婃湁1鍊�(g猫)鐧�(f膩)鐢熶簡璁婂寲锛屽嵆R1璁�?y艒u)闀解��=R1 鈻硆锛岄偅涔堟儬鏂壒闆绘⿱鐨勫钩琛″氨鏈�(hu矛)琚墦鐮�锛屽嵆鍦�2涓�锛屽墖A銆丅闁撳瓨鍦ㄤ竴瀹氱殑闆诲嫝(sh矛)宸甎L锛屽墖绋辨闆绘⿱?y脿n)姒夌灖鑳舵�嗗棰嶎儣浠庤牻O=UL鈮�0銆�

鍒╃敤闈炲钩琛￠浕姗嬪師鐞嗐�傚皣鍚勭ó闆婚樆鍨嬪偝鎰熷櫒RT鎺ュ叆闆绘⿱鍥炶矾锛屾⿱璺殑闈炲钩琛￠浕澹撳氨鑳藉弽鏄犲嚭姗嬭噦闆婚樆鐨勫井灏忚畩鍖�锛屽洜姝わ紝灏卞彲浠ユ娓�(c猫)鍑哄鐣岀墿鐞嗛噺鐨勮畩鍖栵紙婧害銆佸鍔涚瓑锛�锛孯鏄脯(c猫)閲忕郴绲�(t菕ng)閬稿畾鐨勭簿瀵嗘⿱鑷傞浕闃�锛孯T鐐鸿娓�(c猫)闆婚樆銆�

 

鍏╂杓稿叆绔帴鍏ラ珮杓稿叆闃绘姉鐨勯亱(y霉n)绠楁斁澶у櫒锛岄�欐ǎ鐢卞亸缃浕娴佸湪绶氶浕闃讳笂寮曡捣鐨勫闄嶆渻(hu矛)闄嶅埌灏�锛岄�欐ǎ鏈�(hu矛)闄愬害鐨勬笡灏忔紡闆绘祦锛屾寜鐓у熀鐖鹃湇澶浕娴侀浕澹撳畾寰嬪彲鐭ワ細

鐢卞叕寮忥紙4锛夊彲浠ョ湅鍑哄湪姝ゆ脯(c猫)閲忕郴绲�(t菕ng)涓�锛岀暥(d膩ng)RT銆婻鏅�(sh铆)锛屽洜姗嬭噦鐨勮几鍑洪浕澹揤OUT鐐鸿矤(f霉)鍊硷紝鍥犳鐐轰繚璀塚OUT涓�鐩磋几鍑虹偤姝�锛屽墖瑭叉脯(c猫)閲忕郴绲�(t菕ng)姗嬭噦闆婚樆鍊糝鎳�(y墨ng)鐣�(d膩ng)澶т簬琚脯(c猫)闆婚樆RT鐨勪笂闄愰浕闃诲�硷紝浠T1000鐐轰緥锛�0鈩冩檪(sh铆)鍏堕浕闃诲�肩偤1 000 惟锛屽叾闆婚樆鏈夋晥璁婂寲鑼冨湇鐐�803 惟锝�2 120 惟锛堝嵆婧害璁婂寲鑼冨湇鐐�-50鈩冿綖300鈩冿級锛屽墖姗嬭噦闆婚樆R鐨勬噳(y墨ng)鐣�(d膩ng)閬稿彇澶т簬鍏堕墤闆婚樆鍊肩殑璁婂寲涓婇檺锛�2120 惟锛�锛屽湪鏈緥涓�锛屾⿱鑷傞浕闃籖閬稿彇2 700 惟锛屽畬鍏ㄦ豢瓒虫脯(c猫)閲忛渶姹備笖涓嶆渻(hu矛)鐧�(f膩)鐢熸孩鍑虹従(xi脿n)璞�銆�

鍦ㄦ縺鍕�(l矛)闆绘祦婧愮偤鍏稿瀷鍊�1 mA鐨勬浠朵笅锛屾鏅�(sh铆)VAB鐨勮畩鍖栬寖鍦嶇偤153锝�575mV锛孉MP鐐篢I鍏徃鐨勯珮绮惧害閬�(y霉n)绠楁斁澶у櫒AD620锛孉D620閲囩敤宸垎鏀惧ぇ鍣ㄥ皣姗嬭噦杓稿嚭鐨勯浕澹撳樊杞�(zhu菐n)鎻涚偤鍠闆诲骞堕��(j矛n)琛屾斁澶э紝鍏跺樊鍒嗘斁澶у櫒鐨勫け瑾�(di脿o)闆诲寰堝皬锛屾秷闄ゅけ瑾�(di脿o)鎰忓懗钁楄几鍑虹寰皬宸垎淇¤櫉(h脿o)寰楀埌鏀惧ぇ鑰屽け瑾�(di脿o)闆诲涓嶈鏀惧ぇ锛屽叾澧炵泭闆婚樆閬告搰闃诲�肩偤5 k惟鐨勯珮绮惧害闆婚樆锛屽墖閬�(y霉n)绠楁斁澶у櫒澧炵泭鐐簁=10.88锛屽墖閫氶亷鍏紡锛�4锛夎▓(j矛)绠楀彲鐭ワ紝VOUT鏈夋晥杓稿嚭闆诲鑼冨湇鐐�1.667锝�6.259 V銆�

3.2.1 鍌虫劅鍣ㄧ暟甯告儏娉佷笅閲囬泦绲�(ji茅)鏋�

鍦ㄩ墤闆婚樆娓�(c猫)婧郴绲�(t菕ng)涓�锛岄墤闆婚樆鍌虫劅鍣ㄧ殑宸ヤ綔鐠�(hu谩n)澧冮�氬父姣旇純鎯″姡锛屽緸鍌虫劅鍣ㄥ紩绶氱鍒版脯(c猫)閲忕郴绲�(t菕ng)鐨勫紩绶氶�氬父閬�(d谩)鍗佷綑绫筹紝鍦ㄨō(sh猫)瑷�(j矛)鏅�(sh铆)灏�(du矛)寮曠窔鐨勪繚璀�(h霉)涔熼潪甯搁噸瑕�锛岃閬垮厤鍑虹従(xi脿n)鏂烽枊浠ュ強鐩镐簰鐭矾鐨勭従(xi脿n)璞＄櫦(f膩)鐢�锛屽湪鏌愪簺鐗规畩闋�(l菒ng)鍩燂紙渚嬪鑸┖宸ユキ(y猫)銆佺煶娌瑰嫎鎺級锛岀郴绲�(t菕ng)瑕佹眰鐣�(d膩ng)鍑虹従(xi脿n)椤炰技鐨勬晠闅滄檪(sh铆)娓�(c猫)閲忕郴绲�(t菕ng)鎳�(y墨ng)鐣�(d膩ng)鑳藉涓诲嫊(d貌ng)璀�(sh铆)鍒�锛岃姹傜郴绲�(t菕ng)鍏锋湁鍛婅鑳藉姏銆�

3.2.1.1 鍦ㄥ偝鎰熷櫒闁嬭矾鎯呮硜

鍌虫劅鍣ㄩ枊璺紝灏�(du矛)浜庢脯(c猫)瑭︾郴绲�(t菕ng)鍙互鍒嗙偤浠ヤ笅骞剧ó鎯呮硜渚嗗垎鏋�銆�

鐢变笂琛�1鍙煡锛岀暥(d膩ng)鍌虫劅鍣ㄥ嚭鐝�(xi脿n)浜嗛枊璺晠闅�锛岄亱(y霉n)绠楁斁澶у櫒鐨勮几鍑洪浕澹揤OUT=13.6 V鎴朧OUT=-12.7 V锛屽嵆鍦ㄥ偝鎰熷櫒闁嬭矾姊濅欢涓嬶紝閬�(y霉n)绠楁斁澶у櫒閫�(j矛n)鍏ラ＝鍜岀媭鎱�(t脿i)锛涜�屽湪鍌虫劅鍣ㄦ甯稿伐浣滄浠朵笅锛岄亱(y霉n)绠楁斁澶у櫒鐨勮几鍑洪浕澹揤OUT鍧囧湪姝ｅ父鏀惧ぇ鍗�(q奴)鍏�(n猫i)銆�

3.2.1.2 鍦ㄥ偝鎰熷櫒鐭矾鎯呮硜

閫氬父鎯呮硜涓嬮墤闆婚樆鍌虫劅鍣ㄤ笉鏈�(hu矛)鍑虹従(xi脿n)鐭矾鐨勬儏娉�锛屽湪浣跨敤涓嶇暥(d膩ng)锛屼緥濡傚偝鎰熷櫒寮曠窔纾ㄦ悕灏�(d菐o)鑷寸窔闁撶煭璺�锛岄偅涔堢敱寮忥紙4锛夊彲鐭ャ��

姝ゆ檪(sh铆)VOUT杓稿嚭鐐洪亱(y霉n)绠楁斁澶у櫒姝ｇ殑椋藉拰鍊硷紙13.6V锛�銆�

鍥燱ire1銆�2鏈韩灏辨槸寰炰竴绔紩鍑�锛屾晠Wire1銆�2涓嶅瓨鍦ㄧ煭璺晠闅滅媭鎱�(t脿i)銆傜敱涓婅〃2鍙煡锛岀暥(d膩ng)鍌虫劅鍣ㄥ嚭鐝�(xi脿n)浜嗙煭璺晠闅滐紝閬�(y霉n)绠楁斁澶у櫒鐨勮几鍑洪浕澹揤OUT=13.6 V锛屽嵆鍦ㄥ偝鎰熷櫒鐭矾姊濅欢涓嬶紝閬�(y霉n)绠楁斁澶у櫒閫�(j矛n)鍏ラ＝鍜岀媭鎱�(t脿i)锛涜�屽湪鍌虫劅鍣ㄦ甯稿伐浣滄浠朵笅锛岄亱(y霉n)绠楁斁澶у櫒鐨勮几鍑洪浕澹揤OUT鍧囧湪姝ｅ父鏀惧ぇ鍗�(q奴)鍏�(n猫i)銆�

3.2.1.3 鍦ㄥ偝鎰熷櫒鐣板父鎯呮硜鍛婅鍔熻兘

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