鎽� 瑕�:鐩墠浠ヨ▓绠楁鐐烘牳蹇冪殑鐝�(xi脿n)浠ｉ浕瀛愭娓剙琛ㄧ郴绲�(t菕ng)鐧�(f膩)灞曡繀閫�,琚脯灏嶈薄闈炲父寤ｆ硾銆傜偤浜嗘豢瓒虫暩(sh霉)瀛楃郴绲�(t菕ng)鎬ц兘涓嶆柗鎻愰珮鐨勯渶姹�,鍜岄珮闆嗘垚搴﹂檷浣庤姱鐗囩敓鐢�(ch菐n)鐨勬垚鏈殑闇€瑕�,闁嬬櫦(f膩)浣庡姛鑰楀鍔熻兘鐨勬櫤鑳藉剙琛ㄧ郴绲�(t菕ng)灏遍’寰楀挨鐐洪噸瑕�銆傛湰鏂囬鍏堝垎鏋愮爺绌朵簡褰遍熆鍔熻€楃殑鍚勭ó鍥犵礌,骞朵互浣庡姛鑰椾綔鐐轰富瑕佺洰妯�,闁嬬櫦(f膩)鍑轰竴绋熀浜嶮SP430鑺墖鐨勯€氱敤鍨嬪鐢ㄩ€斾綆鍔熻€楀剙琛ㄧ郴绲�(t菕ng)銆傛枃涓粙绱逛簡MSP430鑺墖鐨勭壒榛�,骞朵粩绱板湴鍒嗘瀽浜嗚粺纭欢鐨勫悇鍔熻兘妯″,骞堕€茶浜嗗劒(y艒u)鍖栬ō(sh猫)瑷�銆�

闂�(gu膩n)閸佃: 浣庡姛鑰�, MSP430, 鍎€琛ㄧ郴绲�(t菕ng)

Designation of Low Cost Instrument System Based on MSP430 XIE Min

Abstract: At present modern electrical testing instruments is developing rapidly. Because of the improvement of the digital systems capability and the requirement of the low producing cost, it is so important to develop a all-purpose and muti-function low cost instrument. Aiming at the low system cost, Many factors which affect the system cost were analyzed in the paper, then I give out a new all-purpose and muti-function low cost instrument based on the MSP430.In the article, the characteristics of the MSP430 were introduced, and also the design of the main function module of the hardware and software. At last some optimal and anti-jamming improvements were developed and used in the low cost system.

Keywords: low system cost, MSP430, instrument

1 寮曡█

鍦ㄧ瀛�(xu茅)鎶€琛�(sh霉)鑸囩ぞ鏈冪敓鐢�(ch菐n)楂樺害鐧�(f膩)閬旂殑浠婂ぉ,鏅鸿兘娓│鍎€鍣ㄨ垏鍎€鍣ㄥ剙琛ㄧ郴绲�(t菕ng)鐧�(f膩)灞曡繀閫�,琚脯灏嶈薄鐨勮法搴︽棦寤ｆ硾鍙堝叿鏈夊妯ｆ€�銆傝▓绠楁鎶€琛�(sh霉)鐨勮繀鐚涚櫦(f膩)灞曚娇鍎€鍣ㄥ剙琛ㄧ殑鐧�(f膩)灞曚笂浜嗕竴鍊嬫柊鑷洪殠,鍌崇当(t菕ng)鐨勬娓ō(sh猫)鍌欒鏅鸿兘鍖栧剙鍣ㄦ墍鍙栦唬銆傛櫤鑳藉寲鍎€琛ㄧ殑鍏╁€嬩富瑕佺殑鐧�(f膩)灞曟柟鍚戞槸澶у瀷鑷嫊娓│绯荤当(t菕ng)鍜屼究鏀滃紡浣庡姛鑰楁櫤鑳藉剙琛�,鍔熺巼鍟忛涔熷氨鎴愮偤闆昏矾瑷�(sh猫)瑷堟墍闇€鑰冩叜鐨勯噸瑕佸洜绱犱箣涓€銆傚湪鏈枃涓�,鎴戝皣鎻愬嚭涓€绋熀浜嶮SP430鐨勯€氱敤鍨嬩綆鍔熻€楀剙琛ㄧ郴绲�(t菕ng)鐨勮ō(sh猫)瑷堟柟妗�銆傝┎浣庡姛鑰楃郴绲�(t菕ng)鑸囦笉鍚岀殑鍌虫劅鍣ㄧ浉绲�(ji茅)鍚�,鑳藉?q奴)宕縁(xi脿n)鏁�(sh霉)鎿�(j霉)鐨勯噰闆嗚垏铏曠悊,骞跺叿鍌欓嵉鐩よ几鍏ヨ垏LCD椤ず鍔熻兘,鑳介仼鍚堝悇绋伐浣滃牬鍚�銆�

2 浣庡姛鑰楀剙琛ㄧ郴绲�(t菕ng)纭欢瑷�(sh猫)瑷�

2.1纭欢绯荤当(t菕ng)绺介珨瑷�(sh猫)瑷�

鏈剙琛ㄧ郴涓伕鐢ㄧ殑鏄疢SP430鑺墖銆侻SP430绯诲垪鏄竴娆惧叿鏈夌簿绨℃寚浠ら泦鐨�16浣嶈秴浣庡姛鑰楁贩鍚堝瀷鍠墖姗熴€傚畠鍖呭惈棣渚濇浖绲�(ji茅)妲�(g貌u)灏嬪潃鏂瑰紡锛圡AB锛夊拰鏁�(sh霉)鎿�(j霉)瀛樺劜鏂瑰紡锛圡DB锛夌殑闈堟椿鏅傞悩绯荤当(t菕ng),鐢变簬鍚湁涓€鍊嬫婧栫殑鍦板潃鏄犲皠鍜屾暩(sh霉)瀛楁ā鎿鍦嶆帴鍙ｇ殑CPU,MSP430鐐烘贩鍚堜俊铏熸噳(y墨ng)鐢ㄩ渶姹傛彁渚涗簡瑙ｆ焙鏂规銆�

MSP430绯诲垪鐨勪富瑕佺壒寰佹湁:瓒呬綆鑳借€楃殑楂旂郴绲�(ji茅)妲�(g貌u)澶уぇ寤堕暦浜嗛浕姹犲＝鍛�;閬╃敤浜庣簿瀵嗘脯閲忕殑鐞嗘兂楂樻€ц兘妯℃摤鐗规€�;16浣峈ISC CPU鐐烘瘡涓€鏅傞枔鐗囪檿鐞嗙殑浠ｇ⒓娈靛閲忔彁渚涙柊鐨勭壒鎬�,绯荤当(t菕ng)鍙法绋嬬殑Flash瀛樺劜鍣ㄥ彲浠ュ弽寰�(f霉)鎿﹀浠ｇ⒓銆佸垎濉婃摝瀵拰鏁�(sh霉)鎿�(j霉)杓夊叆銆傚湒3-1绲﹀嚭浜嗛浕鑳借〃鐨勭‖浠舵鍦�:

鍦�1 绯荤当(t菕ng)纭欢妗嗗湒

鍦�1涓殑纭欢鎸夊姛鑳藉彲鍒嗙偤鏁�(sh霉)鎿�(j霉)閲囬泦銆佹斁澶ц垏婵炬尝銆佸柈鐗囨銆侀嵉鐩ゃ€丩CD椤ず銆佹檪閻橀浕璺�銆佹暩(sh霉)鎿�(j霉)瀛樺劜銆丏AC銆佸牨璀︺€佺湅闁€鐙楅浕璺�銆丷S485閫氫俊鍜岄浕婧愮鐞嗙瓑鍔熻兘妯″銆�

2.2 妯″瑷�(sh猫)瑷�

2.2.1闆绘簮妯″瑷�(sh猫)瑷�

鍦ㄦ暣鍊嬬郴绲�(t菕ng)涓�,鎴戠敤鍒颁簡±5V銆�±12V, 2.5V, 3V銆傚皪浜�±5V鍜�±12V閫欏叐绲勯浕澹撴槸閲囩敤灏堥杸鐨勯浕婧愭ā濉婁締渚涢浕鐨�銆傜敱浜嶮SP430鍨嬪柈鐗囨鏄綆鍔熻€楃殑鍠墖姗�,閲囩敤3V渚涢浕,瑕佺敤灏堢敤鐨勯浕婧愭ā濉婁締灏嶅柈鐗囨閫茶渚涢浕銆傚柈鐗囨鐨勪緵闆绘ā濉婃槸寰峰窞鍎€鍣ㄥ叕鍙哥殑TPS76301,閫欏€嬮浕婧愭ā濉婃槸琛ㄩ潰璨肩墖寮忕殑,杓稿嚭闆诲閫ｇ簩(x霉)鍙(di脿o),鍙互杓稿嚭1.6-5.0V鐨勯浕澹�銆傚彧鏈�5鍊嬬鑵�銆傚畠鍙互鎻愪緵l50mA鐨勯浕娴�,杓稿嚭闆诲鐨勬噳(y墨ng)鐢ㄩ浕璺鍦�2鎵€绀�銆�

鍦�2 TPS76301鐨勬噳(y墨ng)鐢ㄩ浕璺�

闆婚樆R1鍜孯2涓婄殑闆绘祦蹇呴爤鏄�7μA宸﹀彸銆傚啀浣庝竴榛炵殑闆婚樆涔熷彲浠ョ敤,浣嗘槸娴不浜嗗姛鐜�,澶珮鐨勯浕闃讳篃涓嶈兘鐢�,鍥犵偤閫欐ǎ鏈冨紩璧稦B绔殑娉勬紡闆绘祦澧炲姞鍜屽紩璧烽浕澹撻尟瑾ゃ€傛帹钖︾殑闆婚樆鍊煎氨鏄伕鎿嘡2=169KΩ,骞朵笖璁撴祦閬嶳1鍜孯2闆婚樆鐨勯浕娴佺偤7μA宸﹀彸,鐢变笅寮忚▓绠桼1:

涓€浜涢浕闃诲拰杓稿嚭闆诲鐨勫吀鍨嬪€煎琛�1鎵€绀�: 

琛�1 宸ヨ几鍑洪浕澹撳拰闆婚樆鐨勫吀鍨嬪€�

2.2.2 鏀惧ぇ鑸囨烤娉㈡ā濉�

鎴戝湪瑭蹭綆鍔熻€楃郴绲�(t菕ng)鐨勮几鍏ラ€氶亾涓噰鐢ㄧ殑鍓嶇疆鏀惧ぇ鍣ㄦ槸TI鍏徃鐨凮PA349銆傝几鍏ラ€氶亾闆昏矾濡傚湒3鎵€绀�,瑭查浕璺櫎浜嗘斁澶у姛鑳�,閭勮兘鍏锋湁婵炬尝鍔熻兘,娑堥櫎鐒￠棞(gu膩n)鐨勪氦娴佸垎閲�銆�

鍦�3 鏀惧ぇ鑸囨烤娉㈤浕璺湒

2.2.3 RS-485閫氳▕闆昏矾

閫氳▕妯″鏄湰绯荤当(t菕ng)鐨勪竴鍊嬮噸瑕佺祫鎴愰儴鍒嗘銆傛帶鍒跺櫒閫氶亷閫氳▕妯″瀵︾従(xi脿n)姝峰彶閬嬭鏁�(sh霉)鎿�(j霉)鍙婃湁闂�(gu膩n)淇℃伅鐨勪笂鍌冲拰鍩烘湰鍙冩暩(sh霉)銆佹帶鍒跺懡浠ょ瓑鐨勬帴鏀�,瑷�(sh猫)瑷堜竴鍊嬭純鎴愬姛鐨勯€氫俊闆昏矾灏囩洿鎺ュ奖闊垮埌鎺у埗鍣ㄧ殑瑾�(di脿o)瑭�銆佸姛鑳界櫦(f膩)鎻強鍏堕€氱敤鎬�銆�

鍦�4 RS-485涓茶閫氳▕

鍦�4鐐篟S-485閫氳▕鎺ュ彛闆昏矾,鍠墖姗熻垏涓婁綅姗熶箣闁撶殑鏁�(sh霉)鎿�(j霉)鍌抽€佺稉(j墨ng)閬嶳S485鏀剁櫦(f膩)鍣∟AX485,鐢卞柈鐗囨鐨刄SARTI鐧�(f膩)閫佸拰鎺ユ敹銆傞€氳▕鏂瑰紡鐐哄崐闆欏伐,鐢卞柈鐗囨鐨凱3.5鍙ｆ帶鍒舵暩(sh霉)鎿�(j霉)鐧�(f膩)閫佸拰鎺ユ敹銆傜偤浜嗘彁楂樻暩(sh霉)鎿�(j霉)鍌宠几?sh霉)鐩灑钃確鎬�,RS-485鐐�+5V鍠崹渚涢浕,閲囩敤楂橀€熷厜鑰﹁垏鍏朵粬闆绘簮瀹屽叏闅旈洟,涓嶅叡鍦�銆傜敱浜庡偝杓哥窔杓冮暦鑰屼笖鐝�(xi脿n)鍫村彲鑳芥湁闆荤骞叉摼,鎵€浠ュ湪鍌宠几绶氫笂骞惰伅(li谩n)鐬畩闆诲鎶戝埗鍣═VSC,涓茶伅(li谩n)鐔旀柗鍣�,骞朵笖鍌宠几绶氫娇鐢ㄥ付灞忚斀灞ょ殑闆荤簻銆�

鍙﹀閭勬湁鏅傞悩闆昏矾妯″, A/D杞�(zhu菐n)鎻涙ā濉�, LCD椤ず鎺ュ彛瑷�(sh猫)瑷�, 閸电洡鎺ュ彛妯″, 瀛樺劜鎿村睍妯″灏变笉瑭崇窗浠嬬垂銆�

鍦�5鏅鸿兘绲傜涓荤▼搴忔祦绋嬪湒

3 浣庡姛鑰楃郴绲�(t菕ng)杌熶欢閮ㄥ垎瑷�(sh猫)瑷�

鍠墖姗熸噳(y墨ng)鐢ㄧ郴绲�(t菕ng)鐨勮粺浠惰ō(sh猫)瑷堝拰涓€鑸殑绋嬪簭瑷�(sh猫)瑷堜笉鍚�,鏃㈡湁鍚勭ó瑷堢畻绋嬪簭銆佹帶鍒剁瓥鐣ョ▼搴忕殑瑷�(sh猫)瑷�,閭勮绲�(ji茅)鍚堝叿楂旂殑纭欢闆昏矾閫茶鍚勭ó杓稿叆杓稿嚭绋嬪簭瑷�(sh猫)瑷堛€傛湰鍎€琛ㄧ郴绲�(t菕ng)杌熶欢閲囩敤妯″鍖栫祼(ji茅)妲�(g貌u)瑷�(sh猫)瑷�,灏囧悇鍔熻兘妯″瑷�(sh猫)瑷堢偤鐛ㄧ珛鐨勭法绋嬭(di脿o)瑭︾▼搴忓,閫欐ǎ鏈夊埄浜庝粖鍚庡鐝�(xi脿n)鍔熻兘鎿村睍,鑰屼笖渚夸簬瑾�(di脿o)瑭﹀拰閫ｆ帴,鏇存湁鍒╀簬绋嬪簭鐨勭Щ妞嶅拰淇敼銆�

鏈郴绲�(t菕ng)鐨勮粺浠惰ō(sh猫)瑷堜娇鐢ㄧ殑鏄仼鐢ㄤ簬MSP430绯诲垪鐨凜瑾炶█,閫欑óC瑾炶█鑸囨婧朇瑾炶█鍏煎绋嬪害寰堥珮銆傞枊鐧�(f膩)骞宠嚭浣跨敤鐨勬槸IAR鍏徃灏堢偤MSP430绯诲垪鎻愪緵鐨勯泦鎴愯(di脿o)瑭︾挵(hu谩n)澧僂mbedded Workbench鍜孋瑾炶█瑾�(di脿o)瑭﹀櫒C-SPY銆�

3.1 鍩轰簬鏅傞枔瑙哥櫦(f膩)鐨勬贩鍚堝紡瑾�(di脿o)搴︿粙绱�

瑾�(di脿o)搴﹀櫒灏卞儚鏄竴鍊嬬啊鍠殑鎿嶄綔绯荤当(t菕ng),鍙互鍛ㄦ湡鐨勬垨鍠鐨勮(di脿o)鐢ㄤ换鍕�(w霉)銆傚闅涗笂,瑾�(di脿o)搴﹀櫒灏辨槸涓€鍊嬭ū澶氫笉鍚屼换鍕�(w霉)鍏变韩鐨勫畾鏅備腑鏂锋湇鍕�(w霉)绋嬪簭,鍙鍒濆鍖栦竴鍊嬪畾鏅傚櫒,灏卞彲浠ヨ(di脿o)搴﹀鍊嬩换鍕�(w霉)銆備换鍕�(w霉)鐨勭壒寰佸垎鐐�4閮ㄥ垎:浠诲嫏(w霉)鍑芥暩(sh霉)鐨勬寚閲�,寤堕伈鏅傞枔,浠诲嫏(w霉)鍩�(zh铆)琛屽懆鏈熷拰浠诲嫏(w霉)鍙惁鍩�(zh铆)琛屾瑷�銆傝(di脿o)搴﹀櫒閫氶亷瀹氭檪鍣ㄧ敘(ch菐n)鐢熶竴瀹氱殑鏅傞枔闁撻殧,鏍规摎(j霉)浠诲嫏(w霉)鍙惁鍩�(zh铆)琛屾瑷樹締鍒ゆ柗骞惰(di脿o)搴﹁鍩�(zh铆)琛岀殑浠诲嫏(w霉)

鏈€氱敤鏅鸿兘绲傜涓�,浠诲嫏(w霉)AD杞�(zhu菐n)鎻�銆侀枊闂�(gu膩n)閲忛噰闆�銆丩CD椤ず銆佽几鍑烘帶鍒剁瓑鏄悎浣滃紡浠诲嫏(w霉),鎸夌収寤堕伈鏅傞枔鍜屽懆鏈熶締闋嗗簭鍩�(zh铆)琛�;閸电洡鎺冩弿鍒嗚В鎴愮煭浠诲嫏(w霉)铏曠悊;485閫氫俊鐐轰腑鏂峰紡浠诲嫏(w霉),鍩�(zh铆)琛屼笂浣嶆鍛戒护浠诲嫏(w霉),瀵﹂殯涓婂ぇ閮ㄥ垎鍛戒护浠诲嫏(w霉)閮芥槸鏍规摎(j霉)鍛戒护瑕佹眰,鏀硅畩鏌愪簺璁婇噺鎴栧瘎瀛樺櫒鐨勫収(n猫i)瀹�,鍩�(zh铆)琛岄€熷害寰堝揩,鍙互姣忎締涓€娆″懡浠ゅ煼(zh铆)琛屼竴娆�,灞簬鍠浠诲嫏(w霉)銆傜敱绯荤当(t菕ng)浠诲嫏(w霉)鍜岃(di脿o)搴﹀櫒瑷�(sh猫)瑷堝師鍓�,绲﹀嚭瑾�(di脿o)搴﹀櫒浠诲嫏(w霉)鐨勫爆鎬у垪琛ㄥ琛�2鎵€绀�銆�

琛�2 浠诲嫏(w霉)灞€ц〃

3.2 涓荤▼搴忚ō(sh猫)瑷�

鏈ō(sh猫)瑷堥噰鐢ㄦ檪闁撹Ц鐧�(f膩)鐨勬贩鍚堝紡瑾�(di脿o)搴﹀櫒绯荤当(t菕ng),瑾�(di脿o)搴﹀櫒鏍规摎(j霉)浠诲嫏(w霉)鐨勫煼(zh铆)琛屽懆鏈熷拰寤堕伈鏅傞枔渚嗛爢搴忚(di脿o)搴﹀苟鍩�(zh铆)琛屼换鍕�(w霉),淇濊瓑涓€娆″彧铏曠悊涓€鍊嬩簨浠�,闄嶄綆浜咰PU鐨勮矤鑽�,娓涘皯浜嗗瓨鍎插櫒鐨勪娇鐢ㄩ噺,寰炶€屽寮蜂簡绯荤当(t菕ng)鐨勫彲闈犳€у拰鎿村睍鎬�,骞朵娇寰楃郴绲�(t菕ng)浣庡姛鑰楄ō(sh猫)瑷堟槗浜庡鐝�(xi脿n)銆傜郴绲�(t菕ng)涓荤▼搴忎富瑕佸寘鎷郴绲�(t菕ng)鍒濆鍖栧瓙绋嬪簭鍜屼换鍕�(w霉)鍑芥暩(sh霉)瑾�(di脿o)搴﹀瓙绋嬪簭銆傜郴绲�(t菕ng)涓荤▼搴忔祦绋嬪鍦�5鎵€绀�

4 绺界祼(ji茅)

閫氶亷灏嶅奖闊跨郴绲�(t菕ng)鍔熻€楃殑鍚勭ó鍥犵礌鐨勫垎鏋�,纰哄畾浜嗚寰炵‖浠堕伕鎿囧拰杌熶欢瑷�(sh猫)瑷堝叐鏂归潰鍚屾檪鑰冩叜銆佽粺纭祼(ji茅)鍚堜締鏈€澶ч檺搴︾殑闄嶄綆鍔熻€椼€傛湰鏂囩爺绌剁殑澶氱敤閫斾綆鍔熻€楀剙琛ㄧ郴绲�(t菕ng), 鍙綔鐐烘垜鍦嬬殑姘磋〃銆佺噧姘ｈ〃銆佺啽閲忚〃銆侀浕鑳借〃浠ュ強鍚勭ó妾㈡脯鍎€銆佺洠(ji膩n)鎺у櫒绛夋€ラ渶闆诲瓙鏅鸿兘鍖栫殑瀵︾従(xi脿n)鏂规銆�

鏈枃浣滆€呭壍(chu脿ng)鏂伴粸: 鏈枃浠ラ檷浣庡姛鑰椾綔鐐轰富瑕佺洰妯�,鎵€鐮旂┒鐨勫鐢ㄩ€斾綆鍔熻€楀剙琛ㄧ郴绲�(t菕ng),鏄究鏀滃紡銆佷綆鍔熻€楄ō(sh猫)鍌欑殑涓€鍊嬫瘮杓冨叿楂旂殑閫氱敤鍨嬪鐝�(xi脿n)鏂规銆傚彧瑕佹牴鎿�(j霉)瀵﹂殯闇€瑕佸姞涓婄浉鎳�(y墨ng)鐨勫偝鎰熷櫒鍜屼慨鏀逛竴涓嬪叿楂旇粺浠�,瑭茬郴绲�(t菕ng)鑳藉鏂逛究鐨勬噳(y墨ng)鐢ㄤ簬闇€瑕侀浕姹犱緵闆荤殑澶氱ó妾㈡脯瑷�(sh猫)鍌欍€�

鍙冭€冩枃鐛�:

[1] 榄忓皬榫�.MSP430绯诲垪鍠墖姗熸帴鍙ｆ妧琛�(sh霉)鍙婄郴绲�(t菕ng)瑷�(sh猫)瑷堝渚�.鍖椾含:鍖椾含鑸┖鑸ぉ澶у(xu茅)鍑虹増绀�,2002, 11

[2] 鑳″ぇ鍙�.MSP430鍠墖姗烠瑾炶█绋嬪簭瑷�(sh猫)瑷堣垏闁嬬櫦(f膩).鍖椾含:鍖椾含鑸┖鑸ぉ澶у(xu茅)鍑虹増绀�,2003, 1

[3] 楂樻捣鐢�, 妤婃枃鐓�. 鍠墖姗熸噳(y墨ng)鐢ㄦ妧琛�(sh霉)澶у叏.瑗垮畨:瑗垮畨浜ら€氬ぇ瀛�(xu茅)鍑虹増绀�, 1996, 10

[4] 寰愬織杌�, 澶ц(gu墨)?锛熷垹骞婅涪澹垮瑘楠奉拑鎹岄嫼?y墨ng)鐢�,闆诲瓙绉戞妧澶у(xu茅)鍑虹増绀�,2000

[5] 鍛ㄦ枃鑸�. 鍩轰簬鍠墖姗熺磪澶栫劇绶氶€氫俊鐨勬妱琛ㄧ郴绲�(t菕ng)[J],寰▓绠楁淇℃伅, 2006锛�2-2锛� : P45-47銆丳113

[6] MSP430-FET浠跨湡宸ュ叿浣跨敤鎸囧崡.鍒╃埦閬斾腑鍦嬫湁闄愬叕鍙�