跪求用单片机做输出50HZ输出
\u5982\u4f55\u5c06\u5355\u7247\u673a\u8f93\u51fa\u768450Hz\u65b9\u6ce2\u4fe1\u53f7\u53d8\u6362\u621050HZ\u7684\u6b63\u5f26\u6ce2\u4fe1\u53f7?\u7b80\u5316\u4e00\u4e0b\u8bf4\uff0c\u628a\u6b63\u5f26\u6ce2\u6b63\u534a\u5468\u5206\u6210\u56db\u4efd\uff0c\u52302.5ms\u65f6\u8f93\u51fa\u901a\u8fc7\u7535\u963b\u5bf9\u7535\u5bb9\u51b2\u7535\u52302.7V\uff08\u63a7\u5236\u51b2\u7535\u8109\u5bbd\u5e94\u57280.5ms\u5185\u5b8c\u6210\uff09\uff0c\u52305ms\u65f6\u8f93\u51fa\u901a\u8fc7\u7535\u963b\u5bf9\u7535\u5bb9\u51b2\u7535\u52303V\uff08\u63a7\u5236\u51b2\u7535\u8109\u5bbd\u5e94\u57280.5ms\u5185\u5b8c\u6210\uff09\uff0c\u52307.5ms\u65f6\u8f93\u51fa\u901a\u8fc7\u7535\u963b\u5bf9\u7535\u5bb9\u51b2\u7535\u52302.7V\uff08\u63a7\u5236\u51b2\u7535\u8109\u5bbd\u5e94\u57280.5ms\u5185\u5b8c\u6210\uff09\uff0c\u523010ms\u65f6\u8f93\u51fa\u901a\u8fc7\u7535\u963b\u5bf9\u7535\u5bb9\u51b2\u7535\u52302V\uff08\u63a7\u5236\u51b2\u7535\u8109\u5bbd\u5e94\u57280.5ms\u5185\u5b8c\u6210\uff09\u3002\u4ee5\u4e0a\u4ee5\u5cf0\u503c1V\uff0c\u6700\u4f4e1V\uff0c\u6700\u9ad83V\u7684\u542b2V\u76f4\u6d41\u6210\u5206\u7684\u6b63\u5f26\u6ce2\u4e3a\u4f8b\uff0c\u6700\u540e\u7528\u7535\u5bb9\u9694\u79bb2V\u76f4\u6d41\u6210\u5206\uff0c\u5373\u5f97\u5cf0\u503c1V\u7684\u6b63\u5f26\u6ce2\u3002
\u628a\u6b63\u5f26\u6ce2\u6b63\u534a\u5468\u5206\u6210\u7684\u4efd\u6570\u8d8a\u591a\uff0c\u5145\u7535\u8d8a\u5feb\u6ce2\u578b\u5c31\u8d8a\u63a5\u8fd1\u6b63\u5f26\u6ce2\u3002\u4e00\u822c\u628a\u4e00\u4e2a\u5b8c\u6574\u7684\u6b63\u5f26\u6ce2\u5206\u621040\u4efd\u8db3\u591f\u4e86\u3002\u6574\u4e2a\u8fc7\u7a0b\u53ef\u7406\u89e3\u6210A/D\u8f6c\u6362\u9006\u8fc7\u7a0b\u3002\u7a0b\u5e8f\u4e2d\u5404\u6bb5\u5145\u7535\u7684\u7535\u538b\u503c\u653e\u5230\u8868\u4e2d\uff0c\u7531\u7535\u538b\u503c\u786e\u5b9a\u5145\u7535\u8109\u51b2\u5bbd\u5ea6\u3002\u4f46\u6700\u5bbd\u4e0d\u80fd\u9ad8\u4e8e\u6bcf\u4efd\u6b63\u5f26\u6ce2\u5bbd\uff0c\u540c\u65f6\u5145\u7535\u8fc7\u7a0b\u8fd8\u7684\u80fd\u5b8c\u6210\u3002
\u63a5\u4e00\u4e2a\u5e26\u901a\u6ee4\u6ce2\u5668,\u4e2d\u5fc3\u9891\u7387\u53d650Hz\u5c31\u53ef\u4ee5\u4e86.
有源或者无源的晶振好像没有50HZ的吧。简单的可用NE555来做，没几个元件，可输出三角波，正弦波，矩形波等。频率可调。查看NE555的数据手册，有相关标例。网上也有大堆的电路图。用定时来做，软件定时或者硬件定时都可以。定时20mS，定时结束之后对输出位取反，继续定时20mS，定时结束之后再对输出位取反，定时、取反、定时、取反，如此循环
你可以用PWM来做啊
绛旓細鍗犵┖姣斿彲浠ヤ笉鍙橈紝涓鐩存槸鐧惧垎涔50锛岀洿鎺ユ敼鍙樺畾鏃跺櫒瀹氭椂鏃堕暱 鍛ㄦ湡=1/棰戠巼 瀹氭椂鏃堕暱=鍛ㄦ湡/2 鍋囪鏅舵尟棰戠巼12M,瀹氭椂鍣ㄥ彲浠ュ畾鏃1us鑷65ms 1000HZ鏃跺懆鏈1ms锛屽畾鏃500us 50HZ鏃跺懆鏈熶负20ms 瀹氭椂10ms,鍒氬ソ鍦ㄥ叾瀹氭椂鑼冨洿鍐 鍋囪key1鏄鍔犻敭锛宲luse鏄浜х敓鏂规尝鐨勭鑴氾紝绋嬪簭璇彞濡備笅锛歩f(key1锛=0){ ...
绛旓細鍒嗘瀽:50Hz,鍛ㄦ湡涓20ms,鍗犵┖姣斾负10%,鎵浠ラ珮鐢靛钩2ms,浣庣數骞18ms,鏈绠鍗曠殑鍔炴硶,鐢ㄥ畾鏃跺櫒,瀹氭椂2ms,鍦ㄥ畾鏃跺櫒鍐呰缃竴涓彉閲,褰撳彉閲忎负0鏃,杈撳嚭楂樼數骞,鍚﹀垯杈撳嚭浣庣數骞.鍋囪浣犵殑鏃堕挓鏄12MHz sbit PWM = P1^0;unsigned char Counter = 0;void main(void){ TMOD = 0x10; //---瀹氭椂鍣1宸ヤ綔浜庢柟寮1...
绛旓細锛1锛夎绠楄鏁板垵鍊糥 50Hz瀵瑰簲鍛ㄦ湡涓20mS锛孭1.0闇瑕10mS鍙嶇浉涓娆°12MHz鏅舵尟瀵瑰簲鏈哄櫒鍛ㄦ湡 = 1us 10mS闇瑕佹満鍣ㄥ懆鏈熸暟锛10mS/1uS=10000 璁鹃渶瑕佽鍏0鐨勫垵鍊间负X: X = 65536 − 10000 = 55536銆俋 鍖栦负鍗佸叚杩涘埗鏁帮細 55536 = D8F0H 銆俆0鐨勫垵鍊...
绛旓細鎶婃寮︽尝鐨勪竴涓懆鏈熷垎鎴16娈碉紝绠楀嚭鍏朵腑16涓偣瀵瑰簲鐨杈撳嚭鐢靛帇鐨勫 鏍规嵁杈撳嚭鐢靛帇姹傚嚭杈撳叆鏁版嵁 纭畾P1鍙ｇ殑鍊 绋嬪簭鐢ㄥ惊鐜粨鏋 鍒嗘瓒婂锛屽畠灏辫秺鎺ヨ繎姝ｅ鸡娉㈠舰 鎴戝ぇ姒傜粰浣犲啓涓 浣犲畬鍠勪笅 include<reg51.h> include<absacc.h> void delay();void code abc[ ]={杩欓噷鍐欎綘绠楀嚭鏉ョ殑涓绯诲垪鐨勫紏锛泇oid main...
绛旓細ORG 0000HLJMP MAINORG 000BHLJMP T0ISRORG 0030HMAIN: MOV TMOD,#02H MOV TH0,#6 MOV TL0,#6 SETB TR0 SETB ET0 SETB EA MOV R2,#40 SJMP $T0ISR: DJNZ R2,T0E CPL P0.0T0E: RETI END ...
绛旓細void main(void){ TMOD | = 0x01;TH0(65536-20000)/256;TL0(65536-20000)%256;ET0=1;TR0=1;EA=1;while(1);} void Timer0(void){ TH0(65536-20000)/256;TL0(65536-20000)%256;P1_0=~P1_0;}
绛旓細50hz锛屾瘡绉50涓剦鍐诧紝灏辨槸100娆¤烦鍙樸1/100 =10ms 杩欐槸棰戠巼锛岀敤杩欎釜棰戠巼鍘诲仛灏卞彲浠ヤ簡
绛旓細include <reg51.h>sbit port=P1^1;void Timer0Init(void)//10姣@12.000MHz{TMOD &= 0xF0;//璁剧疆瀹氭椂鍣ㄦā寮廡MOD |= 0x01;//璁剧疆瀹氭椂鍣ㄦā寮廡L0 = 0xF0;//璁剧疆瀹氭椂鍒濆糡H0 = 0xD8;//璁剧疆瀹氭椂鍒濆糡F0 = 0;//娓呴櫎TF0鏍囧織TR0 = 1;//瀹氭椂鍣0寮濮嬭鏃秨void main(){ Timer0Init(...
绛旓細绋嬪簭涓嶇湅锛屽厛妫鏌ヨ繖涓紝5000HZ 鐨勪腑鏂懆鏈熸槸澶氬皯锛 0.1ms锛岃鐪嬩綘鐨勪腑鏂▼搴忕敤鍒颁簡闄ゆ硶鍜屼箻娉曪紝杩欎釜杩愮畻鏄緢娴垂鏃堕棿鐨勫摝銆傘傘傚埌鏈鍚庡氨鏄綘鐨勪腑鏂墽琛屾椂闂寸殑2鍊嶇殑鍊掓暟灏辨槸浣犵殑鏈澶杈撳嚭棰戠巼浜嗐傘傘傚懙鍛 浣犲彲浠ュ皢涓柇鍑芥暟涓殑 TH0=(65536-a)/256;TL0=(65536-a)%256 鏀规垚 TH0=c;TL0=d;瑕...
绛旓細PwmD = 50;//鍗犵┖姣 鍙皟uint PwmF = 500;//棰戠巼 鍙皟 10 = 1HZ 500 =50HZuint PwmCnt = 0;//鍗犵┖姣旇鏁板紆int FreCnt = 0;//棰戠巼鍒嗛鍊紇oid T0 interrupt 1{ ...//璧嬪糡O璁℃暟鍊 50us if(++FreCnt>= (1000/PwmF))//閫氳繃鏀瑰彉PwmF 杈惧埌鍒嗛鏁堟灉 鏀瑰彉杈撳嚭棰戠巼 ...
