閫欐槸鎳�(y墨ng)鐢ㄦ暩(sh霉)瀛楁烤娉㈡妧琛�(sh霉)锛岄�氶亷浠�1/3 鍊嶉牷绋嬫烤娉㈠櫒姝镐竴鍖栫殑闆欐暩(sh霉)瀛楁烤娉㈠櫒绲勭嵅寰楀��(sh铆)鏅�(sh铆)鑱插挤(qi谩ng)鍒嗘瀽鐨勫剙鍣�锛屽畠濡傚悓瀵�(sh铆)鏅�(sh铆)鑱插垎鏋愬剙閭ｆǎ鏈�绲傚湪椤�绀哄櫒涓婇’绀鸿伈寮�(qi谩ng)璀滃湒銆傛�ゅ剙鍣ㄧ殑绲�(ji茅)妲�(g貌u)鍩烘湰涓婅垏鑱插挤(qi谩ng)瑷�(j矛)鐩稿悓,姝よ檿鍙�鏄�閬�(y霉n)鐢ㄦ暩(sh霉)瀛楁妧琛�(sh霉)锛屼互鏁�(sh霉)瀛楁烤娉㈠櫒鍙婇亱(y霉n)绠椾唬鏇挎ā鎿�婵炬尝鍣ㄥ強閬�(y霉n)绠椼��

姝ゅ剙鍣ㄦ脯(c猫)閲忚伈寮�(qi谩ng)鏄�閫氶亷娓�(c猫)閲忓叐鑱插�撲簰鍔熺巼璀滃緱鍒扮��銆傚皪(du矛)涓�绌�(w臎n)瀹氱殑闅ㄦ��(j墨)淇¤櫉(h脿o),鍙�灏�(du矛)閫�(j矛n)琛屽倕閲岃憠璁婃彌锛屽彲寰楄伈寮�(qi谩ng)鐐�

寮忎腑Im銆怗AB銆戠偤pA鍜宲B鐨勪簰鍔熺巼璀滅殑铏涢儴銆傝伈寮�(qi谩ng)鍒嗘瀽鍙�鍏堟��(y墨ng)鐢ㄧ浉闂�(gu膩n)鍣ㄦ脯(c猫)閲忎簰鍔熺巼璀�锛屽啀閫氶亷 FFT鍒嗘瀽鍎�閫�(j矛n)琛屽垎鏋愶紝涔熷彲浠ュ厛鐢ㄩ洐閫氶亾纾佸付瑷橀寗鍎�閷勪笅pA銆乸B淇¤櫉(h脿o),鐒跺悗鐢ㄨ▓(j矛)绠楁��(j墨)鎴�?q奴)锛崇帿纰緋閫氶亾FFT鍒嗘瀽鍎�閫�(j矛n)琛屽垎鏋愩��

鐢ㄦ�ら�炶伈寮�(qi谩ng)鍎�娓�(c猫)閲忚伈寮�(qi谩ng)鏅�(sh铆)涓嶅彈鐠�(hu谩n)澧冩�濅欢闄愬��锛屽彲鍦ㄤ换浣曡伈鍫�(ch菐ng)涓�閫�(j矛n)琛屾脯(c猫)閲忥紝涔熷彲閫�(j矛n)琛岃繎鍫�(ch菐ng)娓�(c猫)閲�銆傜敤姝ゅ剙鍣ㄦ脯(c猫)閲忚伈婧愬姛鐜囨檪(sh铆)锛屽彲浠ユ帓闄ゅ悓鏅�(sh铆)瀛樺湪鐨勫叾浠栫劇闂�(gu膩n)鑱叉簮灏�(du矛)娓�(c猫)閲忕殑褰遍熆锛屾�よ伈寮�(qi谩ng)鍎�閭勫彲鐢ㄤ綔鑱插畾浣嶅剙浠ュ皨鎵捐伈婧愮殑浣嶇疆銆傝┎鍎�鍣ㄧ殑娓�(c猫)閲忛牷鐜囪寖鍦嶅洜鍙椢攔位鐨勯檺鍒�锛屾晠瀛樺湪涓�楂橀牷闄�锛屼竴鑸�鐐�10kHz宸﹀彸锛屽悓妯ｉ倓瀛樺湪浣庨牷闄愶紝绱勭偤125Hz銆�