测量霍尔元件灵敏度的方法

① 濡备綍娴嫔畾闇嶅皵𨱔垫晱搴︼纻瀹冨拰鍝浜涘洜绱犳湁鍏筹纻涓烘彁楂橀湇灏斿师浠剁殑𨱔垫晱搴︿綘灏嗛噰鐢ㄤ粈涔堟柟娉曪纻

闇嶅皵鍏冧欢锛堢敱阌戝寲阈熷埗鎴愶级镄勭伒鏁忓害姣旇缉濂芥祴閲忥纴鐩稿悓镄勭数铡嫔拰纾佸満𨱒′欢涓嬶纴杈揿嚭鐢靛帇楂樼殑鍒欑伒鏁忓害楂.

闇嶅皵闆嗘垚鐢佃矾锛圛C)镄勭伒鏁忓害镄勬祴閲忚佸垎涓ょ嶏细

锛1) 瀵逛簬寮鍏冲瀷锛屾祴閲忓彲浠ヤ娇hall IC镓揿紑锛堜竴鑸杈揿嚭鐢遍珮鍙树绠锛夌殑纾佸満寮哄害锛屼娇hall镓揿紑镄勭佸満瓒婂急鍒欑伒鏁忓害瓒婇珮銆

锛2锛夊逛簬绾挎hall锛屽垯闇瑕佺粰鑺鐗囦竴涓纾佸満鍙橀噺锛堟瘆濡傜佸満鍙桦寲100GS锛夌湅杈揿嚭鐢靛帇鍙桦寲鍊肩殑澶у皬锛岀数铡嫔彉鍖栫殑鍒欑伒鏁忓害楂樸

瀵逛簬镐庢牱鎻愰珮𨱔垫晱搴︼纴鍦╤all𨱒愭枡宸茬粡纭瀹氱殑𨱍呭喌涓嫔彧鑳介潬澶栧姞鏀惧ぇ鍣ㄧ瓑鐢靛瓙鐢佃矾𨱒ュ彉鐩哥殑瀹炵幇銆

镓╁𪾢璧勬枡锛

闇嶅皵绾挎у櫒浠剁殑绮惧害楂樸佺嚎镐у害濂斤绂闇嶅皵寮鍏冲櫒浠舵棤瑙︾偣銆佹棤纾ㄦ崯銆佽緭鍑烘尝褰㈡竻鏅般佹棤鎶栧姩銆佹棤锲炶烦銆佷綅缃閲嶅岖簿搴﹂珮锛埚彲杈疚纠 绾э级锛岄噰鐢ㄤ简钖勭嶈ˉ锅垮拰淇濇姢鎺鏂斤纴闇嶅皵鍣ㄤ欢镄勫伐浣沧俯搴﹁寖锲村斤纴鍙杈撅紞55鈩冿綖150鈩冦

鍦ㄧ佸満涓嶅お寮烘椂锛岄湇灏旂数锷垮樊UH涓庢縺锷辩数娴両鍜岀佹劅搴斿己搴B镄勪箻绉鎴愭ｆ瘆锛屼笌闇嶅皵鐗囩殑铡氩害未鎴愬弽姣旓纴鍗砋H =RH*I*B/未锛屽纺涓镄凴H绉颁负闇嶅皵绯绘暟锛屽畠琛ㄧず闇嶅皵鏁埚簲镄勫己寮便 鍙RH=渭*蚁鍗抽湇灏斿父鏁扮瓑浜庨湇灏旂墖𨱒愭枡镄勭数阒荤巼蚁涓庣数瀛愯縼绉荤巼渭镄勪箻绉銆

绾挎ч湇灏旀晥搴斾紶镒熷櫒 IC 镄勭数铡嬭緭鍑轰细绮剧‘璺熻釜纾侀氩瘑搴︾殑鍙桦寲銆傚湪闱欐侊纸镞犵佸満锛夋椂锛屼粠鐞呜轰笂璁诧纴杈揿嚭搴旂瓑浜庡湪宸ヤ綔鐢靛帇鍙婂伐浣沧俯搴﹁寖锲村唴镄勭数婧愮数铡嬬殑涓鍗娿傚炲姞鍗楁瀬纾佸満灏嗗炲姞𨱒ヨ嚜鍏堕润镐佺数铡嬬殑鐢靛帇銆

鐩稿弽锛屽炲姞鍖楁瀬纾佸満灏嗗炲姞𨱒ヨ嚜鍏堕润镐佺数铡嬬殑鐢靛帇銆傝繖浜涢儴浠跺彲娴嬮噺鐢垫祦镄勮掋佹帴杩戞с佽繍锷ㄥ强纾侀氶噺銆傚畠浠鑳藉熶互纾佸姏椹卞姩镄勬柟寮忓弽鏄犳満姊颁簨浠躲

鍙傝冭祫鏂欐潵婧愶细锏惧害锏剧戋斺旈湇灏斿厓浠

② 闇嶅皵鍏冧欢镄勭伒鏁忓害鏄濡备綍琛ㄥ緛镄勶纻

1銆侀湇灏旂数铡婨=KIB锛孠涓虹伒鏁忓害绯绘暟锛孖涓哄伐浣灭数娴侊纴B涓轰笌闇嶅皵鐗囧强I鍨傜洿镄勭佹劅搴斿己搴︾殑鍒嗛噺銆
涔熷氨鏄璇达纴闇嶅皵鐢靛帇涓庣数娴佸强纾佹劅搴斿己搴︾殑涔樼Н鎴愭ｆ瘆銆
2銆佸伐浣灭数娴佷负浜ゅ彉鐢垫祦镞讹纴濡傛灉澶栫佸満鏄鎭掑畾纾佸満锛岄湇灏旂数铡嬩负涓庡伐浣灭数娴佸悓棰戠巼镄勭数铡嬩俊鍙枫
3銆佸傛灉澶栭儴纾佸満涔熸槸浜ゅ彉纾佸満锛岄湇灏旂数铡嬬殑娉㈠舰涓轰袱涓淇″彿镄勪箻绉镄勬尝褰锛屽傛灉宸ヤ綔鐢垫祦鍜屽栫佸満鏄钖岄戞ｅ鸡娉锛岀数铡嬩负鍖呭惈鐩存祦鍒嗛噺镄勫嶉戠殑姝ｅ鸡娉锛堢浉浣90掳镞讹纴涓嶅惈鐩存祦鍒嗛噺锛夈

③ 闇嶅皵鏁埚簲瀹为獙鎶ュ憡濡备綍鐢ㄥ疄楠屾祴閲忛湇灏斿厓浠剁殑𨱔垫晱搴︼纻璁捐″疄楠

姹傚嚭U锛欼涓烘枩鐜啧1锛孠1=𨱔垫晱搴︿箻浠B銆傜敤鏂灭巼闄や互纾侀氶噺锛孊=CIm

④ 濡备綍娴嬮湇灏旀晥搴旂伒鏁忓害

闇嶅皵鍏冧欢锛堢敱阌戝寲阈熷埗鎴愶级镄勭伒鏁忓害姣旇缉濂芥祴閲忥纴鐩稿悓镄勭数铡嫔拰纾佸満𨱒′欢涓嬶纴杈揿嚭鐢靛帇楂樼殑鍒欑伒鏁忓害楂樸

闇嶅皵闆嗘垚鐢佃矾锛圛C锛夌殑𨱔垫晱搴︾殑娴嬮噺瑕佸垎涓ょ嶏细

锛1锛夊逛簬寮鍏冲瀷锛屾祴閲忓彲浠ヤ娇hallIC镓揿紑锛堜竴鑸杈揿嚭鐢遍珮鍙树绠锛夌殑纾佸満寮哄害锛屼娇hall镓揿紑镄勭佸満瓒婂急鍒欑伒鏁忓害瓒婇珮銆

锛2锛夊逛簬绾挎hall锛屽垯闇瑕佺粰鑺鐗囦竴涓纾佸満鍙橀噺锛堟瘆濡傜佸満鍙桦寲100GS锛夌湅杈揿嚭鐢靛帇鍙桦寲鍊肩殑澶у皬锛岀数铡嫔彉鍖栫殑鍒欑伒鏁忓害楂樸

瀵逛簬镐庢牱鎻愰珮𨱔垫晱搴︼纴鍦╤all𨱒愭枡宸茬粡纭瀹氱殑𨱍呭喌涓嫔彧鑳介潬澶栧姞鏀惧ぇ鍣ㄧ瓑鐢靛瓙鐢佃矾𨱒ュ彉鐩哥殑瀹炵幇銆

镓╁𪾢璧勬枡锛

闇嶅皵鍏冧欢镄勭伒鏁忓害涓庨湇灏旂郴鏁版垚姝ｆ瘆锛岃屼笌闇嶅皵鍏冧欢镄勫帤搴ξ存垚鍙嶆瘆锛屽嵆KH=RH/未锛屽崟浣崭负mV/(mA.G)锛屽畠阃氩父鍙浠ヨ〃寰侀湇灏斿父鏁般傚彟澶栵纴濡傛灉鏄鎸澶у︾墿鐞閲岀殑闇嶅皵瀹为獙闾ｄ釜𨱔垫晱搴﹀硷纴鍏蜂綋杩桦缑鐪嫔疄楠岀敤鍏枫

瀹为檯镄勯湇灏斿厓浠讹纴阃氩父鍒嗕负寮鍏冲瀷鎴栫嚎镐у瀷涓ょ嶏纴寮鍏冲瀷涓鑸涓嶆爣绉扮伒鏁忓害锛岃岀嚎镐у瀷阃氩父鐢垫祦I鐢卞唴閮ㄧ数璺鍐冲畾銆傚洜姝わ纴𨱔垫晱搴︾殑瀹氢箟鍙戠敓浜嗗彉鍖栥

绾挎у瀷闇嶅皵鍏冧欢涓锛屼粠铡熺悊涓婄湅锛岀敱VH=KHIB鍙树负VH=KHB锛屽崟浣嶅彉涓簃V/G锛屾ゆ椂𨱔垫晱搴︿竴鑸鍦1~5mV/G宸﹀彸銆