{"id":589,"date":"2021-08-11T05:53:25","date_gmt":"2021-08-11T05:53:25","guid":{"rendered":"http:\/\/gongyikun.cn\/?p=589"},"modified":"2022-03-27T05:36:09","modified_gmt":"2022-03-27T05:36:09","slug":"%e6%a8%a1%e6%8b%9f%e9%87%8f%e5%88%86%e8%be%a8%e7%8e%87%e4%b8%8e%e7%b2%be%e5%ba%a6%e7%9a%84%e9%97%ae%e9%a2%98","status":"publish","type":"post","link":"https:\/\/blog.gongyikun.cn\/?p=589","title":{"rendered":"\u6a21\u62df\u91cf\u5206\u8fa8\u7387\u4e0e\u7cbe\u5ea6\u7684\u95ee\u9898"},"content":{"rendered":"<h3>\u9996\u5148\u786e\u5b9a\u4e00\u4e2a\u6982\u5ff5\u5c31\u662f\uff1a\u7cbe\u5ea6\u2260\u5206\u8fa8\u7387<\/h3>\n<h4>\u9ad8\u7cbe\u5ea6\u5fc5\u987b\u8981\u9ad8\u5206\u8fa8\u7387\uff0c\u4f46\u662f\u9ad8\u5206\u8fa8\u7387\u4e0d\u8868\u793a\u9ad8\u7cbe\u5ea6<\/h4>\n<p><!--more--><br \/>\n<strong>\u5206\u8fa8\u7387\uff1a\u5c06\u6574\u4e2a\u91cf\u7a0b\u5206\u6210\u591a\u5c11\u7b49\u4efd\uff0c\u80fd\u6d4b\u91cf\u7684\u6700\u5c0f\u523b\u5ea6<\/strong><br \/>\n<strong>\u7cbe  \u5ea6\uff1a\u00a0\u6d4b\u91cf\u503c\u548c\u5b9e\u9645\u503c\u7684\u504f\u5dee\uff0c\u6d4b\u91cf\u7684\u51c6\u786e\u5ea6<\/strong><br \/>\n\u5206\u8fa8\u73878\u4f4d\u300112\u4f4d\u300113\u4f4d\u300116\u4f4d\u5bf9\u5e94\u7684\u5c31\u662f2\u8fdb\u5236\u7684\u4f4d\u6570\uff0c\u5bf9\u5e94\u5404\u81ea\u7684\u7cbe\u5ea6\u5c31\u662f1\/256\u30011\/4096\u30011\/8192\u30011\/65536\u3002<br \/>\n\u7528\u6a21\u62df\u91cf\u5bf9\u5e94\u7684\u5b9e\u9645\u7269\u7406\u91cf\u505a\u9664\u6cd5\u8fd0\u7b97\uff0c\u770b\u5bf9\u5e94\u8bef\u5dee\u7684\u8303\u56f4\u5bf9\u5426\u80fd\u591f\u63a5\u53d7\u3002<br \/>\n\u6bd4\u5982\u9600\u95e8\u5f00\u5ea60-100\uff0c\u90a3\u4e48<strong>\u8bef\u5dee\u7387<\/strong>\u5206\u522b\u4e3a\uff1a<br \/>\n8\u4f4d\u5206\u8fa8\u7387\uff1a100\/2^8(256)=0.4\u4e2a\u5f00\u5ea6\uff0c<br \/>\n12\u4f4d\u5206\u8fa8\u7387\uff1a100\/2^12(4096)=0.025\u4e2a\u5f00\u5ea6\u3002<br \/>\n13\u4f4d\u5206\u8fa8\u7387\uff1a100\/2^13(8196)=0.012\u4e2a\u5f00\u5ea6<br \/>\n16\u4f4d\u5206\u8fa8\u7387\uff1a100\/2^16(65536)=0.0015\u4e2a\u5f00\u5ea6<br \/>\n\u62ff8\u4f4d\u5206\u8fa8\u7387\u4e3a\u4f8b,\u53ea\u6709\u9600\u95e8\u5927\u4e8e\u7b49\u4e8e0.4\u4e2a\u5f00\u5ea6\u7684\u53d8\u5316\u624d\u80fd\u88abPLC\u6216\u4e0a\u4f4d\u673a\u91c7\u96c6\u5230\uff0c0.4\u4e2a\u5f00\u5ea6\u4ee5\u4e0b\u7684\u53d8\u5316\u90fd\u4e0d\u4f1a\u88ab\u91c7\u96c6\u5230\u300216\u4f4d\u7684\u5206\u8fa8\u7387\u5219\u6bd4\u8f83\u7075\u654f\uff0c0.0015\u4e2a\u5f00\u5ea6\u5219\u4f1a\u88ab\u91c7\u96c6\u5230\u3002\u6240\u4ee5\u9ad8\u5206\u8fa8\u7387<\/p>\n<h3>\u9ad8\u5206\u8fa8\u7387\u2260\u9ad8\u7cbe\u5ea6<\/h3>\n<p>\u62ffADC\u82af\u7247\u6765\u8bf4\uff0c\u4e00\u4e2a12\u4f4d\u7684ADC\uff0c\u5b83\u7684\u5206\u8fa8\u7387\u5c31\u662f1\/4096\uff0c\u8fd9\u662f\u56fa\u5b9a\u4e0d\u53d8\u7684\u3002\u800c\u5b83\u7684\u7cbe\u5ea6\u662f\u7531\u6240\u9009\u7528\u7684\u57fa\u51c6\u7535\u538b\u7684\u7cbe\u5ea6\uff0c\u4ee5\u53caAD\u672c\u8eab\u7684\u975e\u7ebf\u6027\u8bef\u5dee\u7b49\u6765\u51b3\u5b9a\u7684\u3002\u5982\u679c\u9009\u7528\u7684\u57fa\u51c6\u7535\u538b\u7cbe\u5ea6\u4e3a1%\uff0c\u90a3\u4e48AD\u91c7\u6837\u7684\u7cbe\u5ea6\u6700\u591a\u53ea\u80fd\u8fbe\u52301%\uff0c\u5b9e\u9645\u4e0a\u8fd8\u6709\u5176\u4ed6\u8bef\u5dee\u5f71\u54cd\uff0c\u80af\u5b9a\u8fbe\u4e0d\u52301%\u3002\u5373\u4f7f\u7528\u5206\u8fa8\u7387\u66f4\u9ad8\u7684AD\u82af\u7247\uff0c\u7cbe\u5ea6\u4e5f\u4e0d\u4f1a\u63d0\u9ad8\u3002<\/p>\n<p>\u4e3e\u4e2a\u5177\u4f53\u7684\u4f8b\u5b50\uff0c\u7528AD\u91c7\u68371.000V\u548c1.001V\u4e24\u4e2a\u7535\u538b\uff0c\u91c7\u6837\u7ed3\u679c\u662f0.800V\u548c0.801V\u3002\u53ef\u4ee5\u770b\u5230\uff0cAD\u80fd\u591f\u5206\u8fa8\u51fa0.001V\u7684\u7535\u538b\u53d8\u5316\uff0c\u4e5f\u5c31\u662f\u8bf4\u5206\u8fa8\u7387\u53ef\u4ee5\u8fbe\u52300.001V\u3002\u4f46\u6d4b\u91cf\u7cbe\u5ea6\u5374\u53ea\u67090.2V\u3002\u6240\u4ee5\u8bf4\u9ad8\u5206\u8fa8\u7387\u5e76\u4e0d\u7b49\u4e8e\u9ad8\u7cbe\u5ea6\u3002\u9ad8\u5206\u8fa8\u7387\u6bd4\u8f83\u5bb9\u6613\u5b9e\u73b0\uff0c\u4e00\u4e2a16\u4f4d\u7684AD\uff0c\u5206\u8fa8\u7387\u5c31\u53ef\u4ee5\u8fbe\u52301\/65536\uff0c\u800c\u7cbe\u5ea6\u8981\u8fbe\u5230\u4e07\u5206\u4e4b\u4e00\u662f\u975e\u5e38\u56f0\u96be\u7684\u3002<\/p>\n<h3>\u9ad8\u5206\u8fa8\u7387\u662f\u9ad8\u7cbe\u5ea6\u7684\u4fdd\u8bc1<\/h3>\n<p>\u5206\u8fa8\u7387\u548c\u7cbe\u5ea6\u662f\u4e24\u4e2a\u6982\u5ff5\uff0c\u4f46\u4e5f\u4e0d\u662f\u5b8c\u5168\u6ca1\u6709\u5173\u7cfb\u3002\u8fd8\u662f\u62ffAD\u91c7\u6837\u6765\u8bf4\uff0c\u5982\u679c\u6211\u8981\u8fbe\u52300.1%\u7684\u7cbe\u5ea6\uff0c\u90a3AD\u7684\u5206\u8fa8\u7387\u5fc5\u987b\u8981\u4f18\u4e8e0.1%\u624d\u884c\u3002<\/p>\n<p>\u7ee7\u7eed\u62ff\u7535\u538b\u6d4b\u91cf\u6765\u4e3e\u4f8b\u3002\u5047\u8bbeAD\u7684\u6d4b\u91cf\u8303\u56f4\u4e3a0~1V\uff0c\u7cbe\u5ea6\u8981\u8fbe\u5230\u6ee1\u91cf\u7a0b\u7684\u00b10.1%\uff0c\u5373\u00b11mV\uff0c\u90a3\u4e48\u6d4b\u91cf\u4e00\u4e2a2mV\u7684\u7535\u538b\u65f6\uff0c\u6d4b\u91cf\u7ed3\u679c\u5e94\u8be5\u57281\uff5e3mV\u4e4b\u95f4\u3002\u5982\u679c\u8fd9\u65f6\u9009\u7528\u7684\u662f\u4e00\u4e2a8\u4f4d\u7684AD\uff0c\u90a3\u4e48\u5b83\u7684\u5206\u8fa8\u7387\u53ea\u67091V\/256\uff0c\u5927\u7ea6\u662f4mV\uff0c\u6d4b\u91cf2mV\u7684\u7535\u538b\uff0c\u8981\u4e48\u6d4b\u7684\u7ed3\u679c\u662f0\uff0c\u8981\u4e48\u6d4b\u7684\u7ed3\u679c\u662f4mV\u3002\u663e\u7136\u8fd9\u662f\u8fbe\u4e0d\u5230\u8981\u6c42\u7684\u7cbe\u5ea6\u7684\u3002\u5fc5\u987b\u9009\u7528\u66f4\u9ad8\u5206\u8fa8\u7387\u7684AD\u624d\u884c\u3002\u6240\u4ee5\u8bf4\u9ad8\u5206\u8fa8\u7387\u662f\u9ad8\u7cbe\u5ea6\u7684\u4fdd\u8bc1\u3002<\/p>\n<h3>\u6a21\u62df\u91cf\u7684\u8f6c\u6362\u516c\u5f0f\u5982\u4e0b\uff1a<\/h3>\n<h4>AD\u8f6c\u6362\uff08\u6a21\u62df\u91cf\u8f6c\u6570\u5b57\u91cf-\u6a21\u62df\u91cf\u8f93\u5165\uff09<\/h4>\n<p>1.\u5148\u8ba1\u7b97\u5b9e\u9645\u6a21\u62df\u91cf\u8f93\u5165\u6570\u5b57\u5360\u8f93\u5165\u8303\u56f4\u7684\u6bd4\u503c\uff1b \u4f8b\u5982\uff1a\u8f93\u5165\u503c\u4e3a5693\uff0c\u8f93\u5165\u8303\u56f4\u4e3a-27648 ~ 27648<br \/>\n1.\u518d\u4f7f\u7528\u8be5\u6bd4\u503c\u4e58\u4ee5\u5b9e\u9645\u8bbe\u5907\u7684\u6570\u503c\u8303\u56f4\uff1b\u4f8b\u5982\uff1a\u5b9e\u9645\u6e29\u5ea6\u5355\u4f4d\u4e3a 0 ~ 400\u2103<br \/>\n1.\u518d\u52a0\u4e0a\u5b9e\u9645\u8bbe\u5907\u8303\u56f4\u7684\u6700\u5c0f\u503c\u3002<\/p>\n<pre><code class=\"language-csharp line-numbers\">FUNCTION FC_AD : REAL \/\/ \u6a21\u6570\u8f6c\u6362\nVAR_INPUT\n    I_RealADValue : LREAL;\/\/ \u6a21\u62df\u91cf\u8f93\u5165\u503c\n\n    I_HardWareNMin  : LREAL:=0;\/\/ \u6a21\u62df\u91cf\u6a21\u5757\u6700\u5c0f\u8f93\u5165\u7535\u538b\u5bf9\u5e94\u7684\u6570\u5b57\u91cf\n    I_HardWareNMax  : LREAL:=20050;\/\/ \u6a21\u62df\u91cf\u6a21\u5757\u6700\u5927\u8f93\u5165\u7535\u538b\u5bf9\u5e94\u7684\u6570\u5b57\u91cf\n\n    I_RealMin : LREAL;\/\/ \u5b9e\u9645\u8bbe\u5907\u7684\u6700\u5c0f\u503c\uff0c\u4f8b\u5982\u6e29\u63a7\u5668\u6700\u5c0f\u8bbe\u7f6e0\u5ea6\n    I_RealMax : LREAL;\/\/ \u5b9e\u9645\u8bbe\u5907\u7684\u6700\u5927\u503c\uff0c\u4f8b\u5982\u6e29\u63a7\u5668\u6700\u5927\u8bbe\u7f6e400\u5ea6\n\nEND_VAR\nVAR\n\nEND_VAR\n<\/code><\/pre>\n<pre><code class=\"language-csharp line-numbers\">FC_AD := (I_RealADValue - I_HardWareNMin) \/ ( I_HardWareNMax - I_HardWareNMin ) * (I_RealMax - I_RealMin ) + I_RealMin;\n<\/code><\/pre>\n<h4>DA\u8f6c\u6362\uff08\u6570\u5b57\u91cf\u8f6c\u6a21\u62df\u91cf-\u6a21\u62df\u91cf\u8f93\u51fa\uff09<\/h4>\n<p>1\u3001\u5148\u8ba1\u7b97\u5b9e\u9645\u9700\u8981\u8bbe\u7f6e\u7684\u6570\u503c\u5360\u53ef\u8bbe\u7f6e\u6570\u503c\u8303\u56f4\u7684\u6bd4\u503c;  \u4f8b\u5982\uff1a\u9700\u8981\u8bbe\u7f6e100\u2103\uff0c\u5b9e\u9645\u53ef\u8bbe\u7f6e\u8303\u56f4\u4e3a0~400\u2103<br \/>\n2\u3001\u518d\u4f7f\u7528\u8be5\u6bd4\u503c\u4e58\u4ee5\u6a21\u62df\u91cf\u5bf9\u5e94\u7684\u6570\u5b57\u91cf\u8303\u56f4;   \u4f8b\u5982\uff1a\u6a21\u62df\u91cf\u8bbe\u7f6e\u8303\u56f4\u4e3a-27648 ~ 27648<br \/>\n3\u3001\u518d\u52a0\u4e0a\u6a21\u62df\u91cf\u5bf9\u5e94\u7684\u6700\u5c0f\u6570\u5b57\u91cf\u7684\u503c\u3002\u56e0\u4e3a\u6a21\u62df\u91cf\u5bf9\u5e94\u7684\u6570\u5b57\u91cf\u6709\u53ef\u80fd\u4e3a\u8d1f\u6570<\/p>\n<pre><code class=\"language-csharp line-numbers\">FUNCTION FC_DA : INT \/\/ \u6570\u6a21\u8f6c\u6362\nVAR_INPUT\n    I_RealValue : LREAL;\/\/ \u8f93\u5165\u5b9e\u9645\u8bbe\u5907\u8f93\u51fa\u7684\u8bbe\u5b9a\u503c\uff0c\u4f8b\u5982\u6e29\u63a7\u5668\u8bbe\u7f6e\u6e29\u5ea6100\u5ea6\n\n    I_HardWareNMin  : LREAL:=0;\/\/ \u6a21\u62df\u91cf\u6a21\u5757\u6700\u5c0f\u8f93\u51fa\u7535\u538b\u5bf9\u5e94\u7684\u6570\u5b57\u91cf\n    I_HardWareNMax  : LREAL:=20050;\/\/ \u6a21\u62df\u91cf\u6a21\u5757\u6700\u5927\u8f93\u51fa\u7535\u538b\u5bf9\u5e94\u7684\u6570\u5b57\u91cf\n\n    I_RealOutMin : LREAL;\/\/ \u5b9e\u9645\u8bbe\u5907\u8f93\u51fa\u7684\u6700\u5c0f\u503c\uff0c\u4f8b\u5982\u6e29\u63a7\u5668\u6700\u5c0f\u8bbe\u7f6e0\u5ea6\n    I_RealOutMax : LREAL;\/\/ \u5b9e\u9645\u8bbe\u5907\u7684\u8f93\u51fa\u6700\u5927\u503c\uff0c\u4f8b\u5982\u6e29\u63a7\u5668\u6700\u5927\u8bbe\u7f6e400\u5ea6\nEND_VAR\nVAR\nEND_VAR\n<\/code><\/pre>\n<pre><code class=\"language-csharp line-numbers\">FC_DA := LREAL_TO_INT((I_RealValue- I_RealOutMin) \/ (I_RealOutMax - I_RealOutMin) * ( I_HardWareNMax - I_HardWareNMin) + I_HardWareNMin);\n<\/code><\/pre>\n<div class=\"clearfix\"><\/div>","protected":false},"excerpt":{"rendered":"<p>\u9996\u5148\u786e\u5b9a\u4e00\u4e2a\u6982\u5ff5\u5c31\u662f\uff1a\u7cbe\u5ea6\u2260\u5206\u8fa8\u7387 \u9ad8\u7cbe\u5ea6\u5fc5\u987b\u8981\u9ad8\u5206\u8fa8\u7387\uff0c\u4f46\u662f\u9ad8\u5206\u8fa8\u7387\u4e0d\u8868\u793a\u9ad8\u7cbe\u5ea6<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[18],"tags":[],"_links":{"self":[{"href":"https:\/\/blog.gongyikun.cn\/index.php?rest_route=\/wp\/v2\/posts\/589"}],"collection":[{"href":"https:\/\/blog.gongyikun.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.gongyikun.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.gongyikun.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.gongyikun.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=589"}],"version-history":[{"count":9,"href":"https:\/\/blog.gongyikun.cn\/index.php?rest_route=\/wp\/v2\/posts\/589\/revisions"}],"predecessor-version":[{"id":1023,"href":"https:\/\/blog.gongyikun.cn\/index.php?rest_route=\/wp\/v2\/posts\/589\/revisions\/1023"}],"wp:attachment":[{"href":"https:\/\/blog.gongyikun.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=589"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.gongyikun.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=589"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.gongyikun.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=589"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}