{"id":2144,"date":"2019-02-25T14:06:06","date_gmt":"2019-02-25T14:06:06","guid":{"rendered":""},"modified":"2019-02-25T22:06:38","modified_gmt":"2019-02-25T14:06:38","slug":"%e5%9f%ba%e4%ba%8e%e9%87%87%e7%94%a8%e7%a3%81%e8%80%a6%e9%9a%94%e7%a6%bb%e5%92%8c%e7%a1%ac%e4%bb%b6%e9%9b%b6%e5%bb%b6%e6%97%b6%e6%8a%80%e6%9c%af%e7%9a%84rs485%e6%80%bb%e7%ba%bf%e8%8a%82","status":"publish","type":"post","link":"http:\/\/www.szryc.com\/?p=2144","title":{"rendered":"\u57fa\u4e8e\u91c7\u7528\u78c1\u8026\u9694\u79bb\u548c\u786c\u4ef6\u96f6\u5ef6\u65f6\u6280\u672f\u7684RS485\u603b\u7ebf\u8282"},"content":{"rendered":"

\n\t\u5f15\u8a00<\/p>\n

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\n\t <\/div>\n

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\n\tADuM2483\u91c7\u7528\u9650\u6446\u7387\u9a71\u52a8\u5668\uff0c\u8f83\u4f4e\u6446\u7387\u964d\u4f4e\u4e86\u4e0d\u6070\u5f53\u7684\u7ec8\u7aef\u5339\u914d\u548c\u63a5\u5934\u4ea7\u751f\u7684\u8bef\u7801\u3002\u5176\u63a5\u6536\u8f93\u5165\u5177\u6709\u771f\u6b63\u7684\u5931\u6548\u4fdd\u62a4\u529f\u80fd\uff0c\u5f53\u63a5\u6536\u5668\u8f93\u5165\u4e3a\u5f00\u8def\u3001\u77ed\u8def\u3001\u6216\u7a7a\u95f2\u65f6\uff0c\u771f\u6b63\u7684\u5931\u6548\u4fdd\u62a4\u53ef\u4f7f\u63a5\u6536\u5668\u7684\u8f93\u51fa\u903b\u8f91\u53d8\u9ad8\u3002\u5728\u4e0a\u7535\u8fc7\u7a0b\u4e2d\u6216\u63a5\u5165\u4e00\u4e2a\u5df2\u4e0a\u7535\u7684\u5e95\u677f\u65f6\uff0c\u5176\u70ed\u63d2\u62d4\u56de\u8def\u53ef\u6d88\u9664\u7531\u4e8e\u5bf9\u4f7f\u80fd\u548c\u5dee\u5206\u63a5\u6536\u5668\u8f93\u5165\u7aef\u7684\u6270\u52a8\u800c\u5bfc\u81f4\u7684\u9519\u8bef\u6570\u636e\u3002ADuM2483\u7684\u9a71\u52a8\u5668\u5177\u6709\u77ed\u8def\u7535\u6d41<\/u>\u9650\u5236\uff0c\u5e76\u53ef\u4ee5\u901a\u8fc7\u70ed\u5173\u65ad\u4fdd\u62a4\u7535\u8def<\/u>\u5c06\u9a71\u52a8\u5668\u8f93\u51fa\u7f6e\u4e3a\u9ad8\u963b\u72b6\u6001\uff0c\u9632\u6b62\u8fc7\u5ea6\u7684\u529f\u7387\u635f\u8017\u3002\u82af\u7247\u5c01\u88c5\u91c7\u7528\u6613\u4e8e\u4f7f\u7528\u7684SOW16\u5c01\u88c5\uff0c\u5de5\u4e1a\u7ea7\u6e29\u5ea6\u8303\u56f4\u5185\u65e0\u9700\u4efb\u4f55\u5206\u7acb\u5143\u4ef6\u5c31\u53ef\u5b9e\u73b0RS485\u529f\u80fd\u3002\u5176\u4e3b\u8981\u7279\u70b9\u5982\u4e0b\uff1a<\/p>\n

\n\t\u25c6\u4f20\u8f93\u901f\u7387\u9ad8\uff0c\u6700\u9ad8\u53ef\u8fbe500 kbps\uff1b<\/p>\n

\n\t\u25c6\u5e26\u8f7d\u80fd\u529b\u5f3a\uff0c\u603b\u7ebf\u4e0a\u6700\u591a\u53ef\u4ee5\u6302\u63a5256\u4e2a\u8282\u70b9\uff1b<\/p>\n

\n\t\u25c6\u5177\u6709±2 kV\u7684ESD\u4fdd\u62a4\u529f\u80fd\u548c\u70ed\u5173\u65ad\u4fdd\u62a4\u529f\u80fd\uff1b<\/p>\n

\n\t\u25c6\u5de5\u4e1a\u7ea7\u6e29\u5ea6\u8303\u56f4\u4e3a\uff0d40\uff5e+85\u2103\uff1b<\/p>\n

\n\t\u25c6\u77ac\u6001\u9ad8\u5171\u6a21\u6291\u5236\u80fd\u529b\uff0c\u771f\u6b63\u9632\u6545\u969c\u88c5\u7f6e\u7684\u63a5\u6536\u8f93\u5165\u7aef\uff1b<\/p>\n

\n\t\u25c6\u4f4e\u529f\u8017\uff0c\u6700\u59272\uff0e5 mA\u7684\u5de5\u4f5c\u7535\u6d41\uff1b<\/p>\n

\n\t\u25c6\u4f53\u79ef\u66f4\u5c0f\uff0c\u96c6\u6210\u5ea6\u9ad8\uff0c\u5927\u5927\u51cf\u5c0f\u4e86\u5370\u5236\u7535\u8def\u677f\u7684\u9762\u79ef\u3002<\/p>\n

\n\t3 RS485\u603b\u7ebf\u8282\u70b9\u8bbe\u8ba1<\/p>\n

\n\tADuM2483\u6240\u9694\u79bb\u7684\u4e24\u7aef\u6709\u5404\u81ea\u7684\u7535\u6e90\u548c\u53c2\u8003\u5730\u3002\u5176\u4e2d\uff0c\u903b\u8f91\u7aef\u7535\u538b\u4e3a2\uff0e7\uff5e5\uff0e5 V\uff0c\u53ef\u4ee5\u5b9e\u73b0\u4f4e\u7535\u538b\u4f9b\u7535\uff0c\u4ece\u800c\u8fdb\u4e00\u6b65\u964d\u4f4e\u7cfb\u7edf\u529f\u8017\uff1b\u603b\u7ebf\u7aef5 V\u4f9b\u7535\uff0c\u672c\u6587\u8bbe\u8ba1\u7684\u63a5\u53e3\u7535\u8def\u7684\u903b\u8f91\u7aef\u7535\u538b\u91c7\u75285 V\u4f9b\u7535\u3002\u7535\u6e90\u548c\u53c2\u8003\u5730\u4e4b\u95f4\u9700\u63a5\u51650\uff0e1μF\u9f9f\u5bb9\uff0c\u4ee5\u6ee4\u9664\u9ad8\u9891\u5e72\u6270\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff1a\u56fe\u4e2d\uff0cGND1\u4e0eGND2\u662f2\u4e2a\u4e0d\u540c\u7684\u53c2\u8003\u5730\uff0c\u5426\u5219\u5c06\u8fbe\u4e0d\u5230\u9694\u79bb\u7684\u6548\u679c\u3002<\/p>\n

\n\tADuM2483\u72ec\u5177\u7684PV\uff08Power\uff0dValid\uff09\u7535\u6e90\u76d1\u63a7\u529f\u80fd\uff0c\u53ef\u6839\u636e\u4f9b\u7535\u7535\u6e90\u7684\u7a33\u5b9a\u60c5\u51b5\u800c\u5f00\u65ad\u82af\u7247\u5de5\u4f5c\u3002\u4e3a\u4e86\u907f\u514dGND1\u7f13\u6162\u4e0a\u7535\uff0f\u6389\u7535 \uff08\u300b100 μs\uff0fV\uff09\u5f15\u8d77\u7684A\u3001B\u8f93\u51fa\u6296\u52a8\u60c5\u51b5\uff0cADuM2483\u8bbe\u8ba1\u4e86PV\u5f15\u811a\u3002\u5f53\u7535\u5e73\u4f4e\u4e8e2\uff0e0 V\u65f6\uff0c\u6b64\u5f15\u811a\u4e3a\u4f4e\uff0c\u82af\u7247\u4e0d\u5de5\u4f5c\uff1b\u9ad8\u4e8e2\uff0e3 V\u65f6\uff0c\u6b64\u5f15\u811a\u4e3a\u9ad8\uff0c\u82af\u7247\u6b63\u5e38\u5de5\u4f5c\u3002D1\u4e0eD2\u7528\u6765\u9632\u6b62\u603b\u7ebf\u4e0a\u7684\u77ac\u53d8\u5e72\u6270\u3002RS485\u603b\u7ebf\u63a5\u53e3\u7535\u8def\u5982\u56fe2\u6240\u793a\u3002<\/p>\n

\n\t\"\u57fa\u4e8e\u91c7\u7528\u78c1\u8026\u9694\u79bb\u548c\u786c\u4ef6\u96f6\u5ef6\u65f6\u6280\u672f\u7684RS485\u603b\u7ebf\u8282\u70b9\u8bbe\u8ba1\"<\/p>\n

\n\t\u91c7\u7528\u91d1\u5347\u9633<\/u>\u516c\u53f8\u7684B0505S\u9694\u79bb\u6a21\u5757\u5b9e\u73b0\u6536\u53d1\u5668\u4e24\u7aef\u7535\u6e90\u4e0e\u5730\u5b8c\u5168\u9694\u79bb\u3002\u5176\u9694\u79bb\u7535\u8def\u5982\u56fe3\u6240\u793a\u3002<\/p>\n

\n\t\"\u57fa\u4e8e\u91c7\u7528\u78c1\u8026\u9694\u79bb\u548c\u786c\u4ef6\u96f6\u5ef6\u65f6\u6280\u672f\u7684RS485\u603b\u7ebf\u8282\u70b9\u8bbe\u8ba1\"<\/p>\n

\n\t4 RS485\u603b\u7ebf\u96f6\u5ef6\u65f6\u6536\u53d1\u7684\u5b9e\u73b0<\/p>\n

\n\t\u5728RS485\u603b\u7ebf\u8282\u70b9\u7535\u8def\u8bbe\u8ba1\u4e2d\uff0c\u4e00\u822c\u8981\u5c06\u6536\u53d1\u5668\u7684\u63a5\u6536\u5141\u8bb8\uff08RE\uff09\u548c\u53d1\u9001\u5141\u8bb8\uff08DE\uff09\u4e24\u4e2a\u5f15\u811a\u77ed\u63a5\uff0c\u7531\u4e00\u6839\u4fe1\u53f7\u7ebf\u6765\u63a7\u5236\u6536\u53d1\u7684\u5207\u6362\u3002\u5728\u63a7\u5236\u7535\u8def\u4e2d\uff0c\u4e00\u822c\u7528\u5355\u7247\u673aI\uff0fO\u5f15\u811a\u6765\u63a7\u5236RS485\u6536\u53d1\u5668\u7684\u6536\u53d1\u8f6c\u6362\uff0c\u8fd9\u6837\u5c31\u9700\u8981\u7531\u8f6f\u4ef6\u6765\u63a7\u5236\u5355\u7247\u673aI\uff0fO\u5f15\u811a\u7684\u7535\u5e73\uff0c\u4ee5\u8fbe\u5230\u63a7\u5236RS485\u6536\u53d1\u8f6c\u6362\u7684\u76ee\u7684\u3002RS485 \u6536\u53d1\u5668\u901a\u5e38\u5904\u4e8e\u63a5\u6536\u72b6\u6001\uff0c\u5f53\u8981\u53d1\u9001\u6570\u636e\u65f6\uff0c\u7531\u7a0b\u5e8f\u63a7\u5236RE\uff0fDE\u53d8\u4e3a\u9ad8\u7535\u5e73\uff0c\u4e32\u884c\u901a\u4fe1\u5355\u5143\u53d1\u9001\u6570\u636e\uff1b\u7b49\u5f85\u53d1\u9001\u5b8c\u6bd5\u540e\uff0c\u7a0b\u5e8f\u518d\u5c06RS485\u6536\u53d1\u5668\u8f6c\u6362\u5230\u63a5\u6536\u72b6\u6001\u3002\u53d1\u9001\u5b8c\u6bd5\u7684\u6807\u5fd7\u4e00\u822c\u7531\u4e32\u884c\u901a\u4fe1\u7684\u7279\u5b9a\u5bc4\u5b58\u5668<\/u>\u63d0\u4f9b\u72b6\u6001\u6307\u793a\uff0c\u518d\u7531\u7a0b\u5e8f\u53bb\u67e5\u8be2\u3002\u8fd9\u6837\u9020\u6210RS485\u901a\u4fe1\u5b58\u5728\u4ee5\u4e0b\u95ee\u9898\uff1a<\/p>\n

\n\t\u25c6\u5728\u60f3\u8981\u53d1\u9001\u6570\u636e\u548c\u771f\u6b63\u80fd\u53d1\u9001\u6570\u636e\u4e4b\u95f4\uff0c\u5b58\u5728\u4e00\u5b9a\u7684\u5ef6\u65f6\uff1b<\/p>\n

\n\t\u25c6\u5982\u679c\u53d1\u9001\u5230\u63a5\u6536\u7684\u8f6c\u6362\u65f6\u673a\u4e0d\u5f53\uff0c\u5219\u4f1a\u9020\u6210\u6570\u636e\u4e22\u5931\uff1b<\/p>\n

\n\t\u25c6\u5728\u63a5\u6536\u548c\u53d1\u9001\u6570\u636e\u8f6c\u6362\u671f\u95f4\uff0c\u5bb9\u6613\u5f15\u5165\u5e72\u6270\uff0c\u6536\u5230\u591a\u4f59\u7684\u6742\u4e71\u6570\u636e\u3002<\/p>\n

\n\t\u5728\u8bbe\u8ba1RS485\u603b\u7ebf\u63a5\u53e3\u7535\u8def\u65f6\u5145\u5206\u8003\u8651\u5230\u4e86\u603b\u7ebf\u7684\u5ef6\u65f6\u95ee\u9898\uff0c\u5e94\u7528\u4e00\u4e2a\u9ad8\u901f\u7684NPN\u4e09\u6781\u7ba1\u63a7\u5236\u5b9e\u73b0RS485\u603b\u7ebf\u7684\u96f6\u5ef6\u65f6\u6536\u53d1\uff0c\u5982\u56fe2\u6240\u793a\u3002<\/p>\n

\n\t\u4e0d\u53d1\u9001\u6570\u636e\u65f6\uff0c\u903b\u8f91\u7aefTXD\u4fe1\u53f7\u4e3a\u9ad8\u7535\u5e73\u3002\u6b64\u65f6Q1\u5bfc\u901a\uff0c\u4f7fRE\uff0fDE\u4fe1\u53f7\u7ebf\u4e0a\u4e3a\u4f4e\u7535\u5e73\uff0cADuM2483\u63a5\u6536\u5141\u8bb8\u3002\u53d1\u9001\u6570\u636e\u65f6\uff0c\u82e5TXD\u4e3a\u4f4e\u7535\u5e73\uff0cQ1 \u5173\u65ad\uff0c\u4ece\u800c\u4f7fRE\uff0fDE\u4fe1\u53f7\u7ebf\u4e0a\u4e3a\u9ad8\u7535\u5e73\uff0c\u53d1\u9001\u5141\u8bb8\uff0cADuM2483\u7684\u8f93\u51fa\u7aefA\u3001B\u4e0a\u4ea7\u751f\u8868\u793a\u4f4e\u7535\u5e73\u7684\u5dee\u5206\u4fe1\u53f7\u3002\u5f53TXD\u4e3a\u9ad8\u7535\u5e73\u65f6\uff0cQ1\u5bfc\u901a\uff0c\u4f7f RE\uff0fDE\u4fe1\u53f7\u7ebf\u4e0a\u4e3a\u4f4e\u7535\u5e73\uff0cADuM2483\u7684A\u3001B\u7aef\u5904\u4e8e\u9ad8\u963b\u6001\u3002\u6b64\u65f6\u9760\u7535\u963bR1\u548cR2\u7684\u4e0a\u62c9\u548c\u4e0b\u62c9\u4f5c\u7528\uff0c\u4f7f\u603b\u7ebf\u4e0a\u4ea7\u751f\u6b63\u7684\u5dee\u5206\u4fe1\u53f7\uff0c\u4ece\u800c\u5c06TXD\u7684\u9ad8\u7535\u5e73\u4fe1\u53f7\u9001\u51fa\u3002<\/p>\n

\n\t\u7531\u4ee5\u4e0a\u5206\u6790\u770b\u51fa\uff0c\u5728\u4f7f\u7528\u8fd9\u4e2a\u7535\u8def\u65f6\uff0c\u53ea\u8981\u7a0b\u5e8f\u80fd\u4fdd\u8bc1\u4e0d\u540c\u65f6\u8fdb\u884c\u63a5\u6536\u548c\u53d1\u9001\u7684\u64cd\u4f5c\uff0c\u5373\u4fdd\u8bc1\u662f\u534a\u53cc\u5de5\u4f20\u9001\u6570\u636e\uff0c\u5219\u4e0d\u5fc5\u7528\u8f6f\u4ef6\u63a7\u5236RE\uff0fDE\u8fdb\u884c\u63a5\u6536\u548c\u53d1\u9001\u7684\u8f6c\u6362\uff0c\u53ef\u7531\u786c\u4ef6\u672c\u8eab\u5b8c\u6210\uff0c\u4ece\u800c\u63d0\u9ad8\u4e86RS485\u603b\u7ebf\u63a5\u6536\u3001\u53d1\u9001\u6570\u636e\u7684\u9ad8\u901f\u7387\u548c\u9ad8\u53ef\u9760\u6027\u3002<\/p>\n

\n\t\u7ed3\u8bed<\/p>\n

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