{"id":4591,"date":"2019-08-01T14:02:08","date_gmt":"2019-08-01T06:02:08","guid":{"rendered":"https:\/\/blog.hoyo.idv.tw\/?p=4591"},"modified":"2023-04-14T09:17:01","modified_gmt":"2023-04-14T01:17:01","slug":"esp8266-%e6%87%89%e7%94%a8%e4%b8%80%ef%bc%9a%e6%99%ba%e8%83%bd%e6%8f%92%e5%ba%a7-4-acs712-%e4%ba%a4%e6%b5%81%e9%9b%bb%e6%b5%81%e5%81%b5%e6%b8%ac","status":"publish","type":"post","link":"https:\/\/blog.hoyo.idv.tw\/?p=4591","title":{"rendered":"ESP8266 \u61c9\u7528\u4e00\uff1a\u667a\u80fd\u63d2\u5ea7 .4 ACS712 \u4ea4\u6d41\u96fb\u6d41\u5075\u6e2c"},"content":{"rendered":"<h2>\u4e8b\u524d\u53ee\u5680\uff1a<\/h2>\n<ol>\n<li>\u96fb\u6d41\u5075\u6e2c\u5728\u641c\u5c0b\u8cc7\u6599\u6642\uff0c\u8acb\u5148\u78ba\u8a8d\u8a72\u61c9\u7528\u5834\u5408\u662f\u76f4\u6d41\u9084\u662f\u4ea4\u6d41\uff1f\u4ea4\u6d41\u662f\u6b63\u5f26\u6ce2\uff0c\u5c0d\u65bc\u91cf\u6e2c\u4e26\u4e0d\u662f\u76f4\u63a5\u53d6\u4e00\u6b21\u6a23\u5c31\u53ef\u4ee5\u641e\u5b9a<\/li>\n<li>\u76ee\u524d\u770b\u5230\u7db2\u8def\u5f71\u7247\u8cc7\u6599\uff0c\u6975\u5927\u591a\u6578\u90fd\u6c92\u6709\u67e5\u770b datasheet \uff0c\u5728\u6700\u5927\u503c\u8f38\u51fa\u96fb\u58d3\u5168\u90e8\u90fd\u662f\u932f\u7684\uff0c5A \u53ea\u5230 3.5V\uff0c20A 30A \u4e5f\u53ea\u5230 4.5V\uff0c\u6240\u4ee5\u8a08\u7b97\u516c\u5f0f\u5168\u662f\u932f\u7684<\/li>\n<li>ACS712 \u53ea\u80fd\u4f7f\u7528 5V \uff0c\u8f38\u51fa\u81ea\u7136\u4e5f\u662f 5V \uff0cESP8266 \u7576\u7136\u4e0d\u652f\u63f4\uff0c\u7db2\u8def\u4e0a\u770b\u5230\u53ef\u4ee5\u4f7f\u7528\u96fb\u5e73\u8f49\u63db\u6216\u662f\u96fb\u963b\u5206\u58d3\u7684\u65b9\u5f0f\u63a5\u5165\uff0c\u4e0d\u904e\u70ba\u4e86\u66f4\u7cbe\u6e96\u7684\u91cf\u6e2c\u6700\u5f8c\u6c7a\u5b9a\u5347\u7d1a\u6210\u300c\u96d9\u6838\u300d\u7248\u672c\uff0c\u4f7f\u7528 Arduino UNO + ESP8266 \u4f86\u9054\u5230 ACS712 + WiFi \u7684\u76ee\u7684<\/li>\n<li>\u6709\u770b\u5230\u642d\u914d ADS1115 \u7684\u4f7f\u7528\u65b9\u5f0f\uff0c\u6c92\u4f7f\u7528\u904e\u4e0d\u78ba\u5b9a\u6548\u679c<\/li>\n<\/ol>\n<p>--<\/p>\n<h2>\u4ec0\u9ebc\u662f ACS712<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.allegromicro.com\/~\/media\/files\/datasheets\/acs712-datasheet.ashx\" target=\"_blank\" rel=\"noopener\">ACS712 - Allegro Microsystems<\/a><\/li>\n<li><a href=\"https:\/\/www.electronicshub.org\/interfacing-acs712-current-sensor-with-arduino\/\" target=\"_blank\" rel=\"noopener\">Interfacing ACS712 Current Sensor with Arduino \u2013 Measure Current with Arduino<\/a><\/li>\n<\/ul>\n<p>\u7c21\u55ae\u8aaa\u5c31\u662f\uff0c\u4e00\u9846\u6e2c\u91cf\u96fb\u6d41\u5f8c\u8f49\u63db\u6210\u96fb\u58d3\u5927\u5c0f\u7684 IC \uff0c\u6839\u64da\u96fb\u58d3\u5927\u5c0f\u5373\u53ef\u63db\u7b97\u7528\u96fb<\/p>\n<p>--<\/p>\n<h2>\u61c9\u7528\u786c\u9ad4\u7dda\u8def<\/h2>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>--<\/p>\n<h2>Datasheet \u5c0d\u65bc\u91cf\u6e2c\u5f8c\u8f38\u51fa\u96fb\u58d3\u7684\u89e3\u91cb<\/h2>\n<p>ACS712 \u6709\u4e09\u500b\u578b\u865f 5A, 20A, 30A \u6211\u5011\u5c31\u770b 5A \u548c 30A \u5c31\u597d\u4e86<\/p>\n<p>\u5148\u770b 5A \u7684<\/p>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-4421\" src=\"https:\/\/blog.hoyo.idv.tw\/wp-content\/uploads\/2018\/04\/Image-176.png\" alt=\"\" width=\"323\" height=\"230\" srcset=\"https:\/\/blog.hoyo.idv.tw\/wp-content\/uploads\/2018\/04\/Image-176.png 323w, https:\/\/blog.hoyo.idv.tw\/wp-content\/uploads\/2018\/04\/Image-176-300x214.png 300w\" sizes=\"(max-width: 323px) 100vw, 323px\" \/><\/p>\n<p>\u7576 Vcc \u70ba 5V \u6642\uff0c\u8f38\u51fa 2.5V \u70ba 0 \u8ca0\u8f09\uff0c\u6eff\u8ca0\u8f09\u662f <span style=\"color: #ff0000;\"><strong>3.5V<\/strong><\/span><\/p>\n<p>\u7136\u5f8c\u662f 30A \u7684<\/p>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-4422\" src=\"https:\/\/blog.hoyo.idv.tw\/wp-content\/uploads\/2018\/04\/Image-177.png\" alt=\"\" width=\"322\" height=\"232\" srcset=\"https:\/\/blog.hoyo.idv.tw\/wp-content\/uploads\/2018\/04\/Image-177.png 322w, https:\/\/blog.hoyo.idv.tw\/wp-content\/uploads\/2018\/04\/Image-177-300x216.png 300w\" sizes=\"(max-width: 322px) 100vw, 322px\" \/><\/p>\n<p>\u4e00\u6a23 Vcc \u70ba 5V \u6642\uff0c2.5V \u70ba 0 \u8ca0\u8f09\uff0c\u6eff\u8ca0\u8f09 30A \u6642\u70ba <strong><span style=\"color: #ff0000;\">4.5V<\/span><\/strong><\/p>\n<p>\u7121\u8ad6\u54ea\u500b\u578b\u865f\uff0c\u8f38\u51fa\u96fb\u58d3\u7d50\u679c\u90fd\u662f<span style=\"color: #ff0000;\"><strong>\u7dda\u6027<\/strong><\/span>\u7684\uff0c\u63db\u53e5\u8a71\u8aaa\u5c31\u662f\u53ef\u4ee5\u76f4\u63a5\u628a \u300c\u8f38\u51fa\u96fb\u58d3 - 2.5\u300d \u7136\u5f8c\u548c\u6975\u9650\u96fb\u58d3\u4f86\u505a\u7c21\u55ae\u7684\u8a08\u7b97\u5373\u53ef\u5f97\u5230\u771f\u6b63\u7684\u8ca0\u8f09\u96fb\u6d41<\/p>\n<p>--<\/p>\n<h2>\u63a5\u4e0a Arduino \u7684\u60c5\u6cc1<\/h2>\n<p>\u7576\u6211\u4f7f\u7528\u4e00\u9846 ACS712 30A \u7684\u5075\u6e2c\u5668\u6642\uff0c\u63a5\u5230 A0 \u7684\u985e\u6bd4\u8173\u4f4d\uff0c0 \u8ca0\u8f09\u6642\u7406\u60f3\u503c\u662f\u6536\u5230 511 \u5de6\u53f3\u7684\u503c\uff0c\u9019\u662f\u56e0\u70ba ACS712 0 \u8ca0\u8f09\u6642\u6703\u8f38\u51fa 2.5V \u7684\u96fb\u58d3<\/p>\n<p>\u63db\u53e5\u8a71\u8aaa\uff0c\u5982\u679c\u4f7f\u7528 30A \u9019\u9846 IC \u7684\u8a71\uff0c\u90a3\u5c31\u53ea\u80fd\u5f97\u5230 408 ( (1024\/5) * (4.5-2.5) = 408 ) \u500b\u53d6\u6a23\uff0c\u6bcf\u500b\u53d6\u6a23\u70ba 0.074A\uff0c\u63a5\u5230 110V \u4ea4\u6d41\u96fb\u5c31\u662f 8.1W<\/p>\n<p>\u4e5f\u5c31\u662f\u8aaa\u7cbe\u5ea6\u5c31\u662f 0.074A\uff0c\u6578\u503c\u6296\u4e00\u4e0b\u5c31\u662f 8.1W \u7684\u5dee\u7570\uff0c\u7576\u7136\u9019\u6a23 30A \u7684\u60c5\u6cc1\uff0c\u5982\u679c\u662f 5A \u7684\u8a71\u56e0\u70ba\u6eff\u8ca0\u8f09\u662f 3.5V \u6240\u4ee5\u5c31\u8981\u81ea\u5df1\u63db\u7b97\u4e00\u4e0b (\u7b49 Hoyo \u81ea\u5df1\u6709\u7528\u5230\u518d\u63db\u7b97\u66f4\u65b0\u4e0a\u4f86 )<\/p>\n<p>--<\/p>\n<h2>AC <strong>\u4ea4\u6d41<\/strong>\u96fb<\/h2>\n<ul>\n<li>https:\/\/ngsir.netfirms.com\/capplets\/rms\/rms.pdf<\/li>\n<\/ul>\n<p>\u4ea4\u6d41\u96fb\u8ca0\u8f09\u7684\u60c5\u6cc1\u5c31\u662f\u4ea4\u6d41\u96fb\u300c\u6b63\u5f26\u6ce2\u300d\u7684\u6a23\u5b50\uff0c\u56e0\u6b64\u5fc5\u9808\u81f3\u5c11\u53d6\u6a23\u4e00\u500b\u4ee5\u4e0a\u7684\u9031\u671f\u5f8c\u7684\u6578\u64da\u624d\u80fd\u8a08\u7b97\u96fb\u6d41\u3002<\/p>\n<p>\u53f0\u7063\u4ea4\u6d41\u96fb\u70ba 60HZ \u6240\u4ee5\u4e00\u6b21\u7684\u53d6\u6a23\u81f3\u5c11\u4e0d\u80fd\u4f4e\u65bc 1\/60 = 0.0167 \u79d2 \u624d\u662f\u4e00\u500b\u9031\u671f<\/p>\n<p><a href=\"https:\/\/blog.hoyo.idv.tw\/wp-content\/uploads\/2019\/05\/Image-20190518-155058.png\" data-rel=\"lightbox-image-0\" data-rl_title=\"\" data-rl_caption=\"\" title=\"\"><img loading=\"lazy\" class=\"alignnone size-medium wp-image-5892\" src=\"https:\/\/blog.hoyo.idv.tw\/wp-content\/uploads\/2019\/05\/Image-20190518-155058-300x165.png\" alt=\"\" width=\"300\" height=\"165\" srcset=\"https:\/\/blog.hoyo.idv.tw\/wp-content\/uploads\/2019\/05\/Image-20190518-155058-300x165.png 300w, https:\/\/blog.hoyo.idv.tw\/wp-content\/uploads\/2019\/05\/Image-20190518-155058-768x422.png 768w, https:\/\/blog.hoyo.idv.tw\/wp-content\/uploads\/2019\/05\/Image-20190518-155058-500x275.png 500w, https:\/\/blog.hoyo.idv.tw\/wp-content\/uploads\/2019\/05\/Image-20190518-155058.png 884w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p><a href=\"https:\/\/blog.hoyo.idv.tw\/wp-content\/uploads\/2019\/05\/Image-20190518-194703.png\" data-rel=\"lightbox-image-1\" data-rl_title=\"\" data-rl_caption=\"\" title=\"\"><img loading=\"lazy\" class=\"alignnone size-medium wp-image-5893\" src=\"https:\/\/blog.hoyo.idv.tw\/wp-content\/uploads\/2019\/05\/Image-20190518-194703-300x113.png\" alt=\"\" width=\"300\" height=\"113\" srcset=\"https:\/\/blog.hoyo.idv.tw\/wp-content\/uploads\/2019\/05\/Image-20190518-194703-300x113.png 300w, https:\/\/blog.hoyo.idv.tw\/wp-content\/uploads\/2019\/05\/Image-20190518-194703-768x290.png 768w, https:\/\/blog.hoyo.idv.tw\/wp-content\/uploads\/2019\/05\/Image-20190518-194703-1024x386.png 1024w, https:\/\/blog.hoyo.idv.tw\/wp-content\/uploads\/2019\/05\/Image-20190518-194703-500x189.png 500w, https:\/\/blog.hoyo.idv.tw\/wp-content\/uploads\/2019\/05\/Image-20190518-194703.png 1288w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>--<\/p>\n<h2>\u9031\u671f\u53d6\u6a23\u8a08\u7b97 Arduino \u7a0b\u5f0f<\/h2>\n<pre class=\"lang:default decode:true \">float value;\r\n\r\n\/\/\r\nvoid setup() {\r\n\r\n    Serial.begin(9600);\r\n}\r\n\r\nvoid loop() {\r\n    unsigned long start_time = millis();\r\n    int i = 1;\r\n    float total;\r\n    float RMS;\r\n    float W;\r\n    while (1){\r\n        if ( millis() - start_time  &gt;= 166 ) break; \/\/ 60HZ = 1000\/60=16.6\r\n\r\n        value = analogRead(A0) - 512;\r\n        total += value*value;\r\n        i++;\r\n    }\r\n\r\n    RMS = (sqrt(total\/i) -1 ); \/\/ 1 \u662f\u89c0\u5bdf\u5f8c\u5728\u7121\u8ca0\u8f09\u6642\u51fa\u73fe\u7684\u96dc\u8a0a\u503c\r\n    W = RMS*0.074*110;\r\n    Serial.print(RMS);\r\n    Serial.print(\" \");\r\n    Serial.print(W);\r\n    Serial.println();\r\n}<\/pre>\n<p>--<\/p>\n<h2><span style=\"color: #000000; font-style: normal; font-weight: bold;\">SoftwareSerial -\u00a0<\/span>Arduino + ESP8266 \u96d9\u6838\u901a\u8a0a<\/h2>\n<p>Arduino \u548c ESP8266 \u4f7f\u7528\u00a0SoftwareSerial \u9054\u5230\u96d9\u5411\u8cc7\u8a0a\u4ea4\u63db\uff0c\u9700\u8981\u6ce8\u610f\u4e32\u5217\u9b91\u7387(Baud Rate) \u4e0d\u80fd\u8a2d\u5b9a\u592a\u4f4e\uff0c\u6703\u6389\u8cc7\u6599<\/p>\n<p>Arduino \u7aef\uff0c\u63a5 ACS712<\/p>\n<pre class=\"lang:default decode:true\">#include &lt;SoftwareSerial.h&gt;\r\nSoftwareSerial mySerial(10, 11); \/\/ RX, TX\r\n\r\n\/\/ \u5f15\u5165\u6240\u9700\u51fd\u5f0f\u5eab\r\n\r\n\/\/ ACS712\r\nfloat value;\r\nint i = 1;\r\nfloat total;\r\nfloat RMS;\r\nfloat W;\r\n\r\nunsigned char senBuf[9] = {0};\r\n\r\nstatic int count = 0;\r\n\r\n\/\/ \u7e7c\u96fb\u5668\u8a2d\u5b9a\r\nconst int relayPin = 5;\r\n\r\n\/\/ \u6eab\u6fd5\u5ea6\u8a2d\u5b9a\r\nfloat t;\r\nfloat h;\r\nint   w;\r\n\r\nvoid setup() {\r\n    Serial.begin(57600);\r\n    mySerial.begin(57600);\r\n    delay(100);\r\n\r\n    \/\/ \u7e7c\u96fb\u5668\r\n    pinMode(relayPin, OUTPUT);\r\n    digitalWrite(relayPin, HIGH);\r\n\r\n    \/\/\r\n    pinMode(16, INPUT);\r\n\r\n}\r\n\r\nvoid loop() {\r\n\r\n    acs712();\r\n\r\n\r\n}\r\n\r\nvoid acs712() {\r\n    value = analogRead(A0);\r\n    Serial.println( value );\r\n\r\n    unsigned long start_time = millis();\r\n    total = 0;\r\n    i = 0;\r\n    while (1) {\r\n        if ( millis() - start_time  &gt;= 166 ) break; \/\/ 60HZ = 1000\/60=16.6\r\n\r\n        value = analogRead(A0) - 512;\r\n        total += value * value;\r\n        i++;\r\n    }\r\n\r\n    RMS = (sqrt(total \/ i) - 1 ); \/\/ 1 \u662f\u89c0\u5bdf\u5f8c\u5728\u7121\u8ca0\u8f09\u6642\u51fa\u73fe\u7684\u96dc\u8a0a\u503c\r\n    if ( RMS &gt;= 0 ) {\r\n        RMS = RMS;\r\n    }\r\n    else {\r\n        RMS = 0;\r\n    }\r\n    W = RMS * 0.074 * 110;\r\n    Serial.print(\"RMS: \");\r\n    Serial.print(RMS);\r\n    Serial.print(\" W:\");\r\n    Serial.print(W);\r\n    Serial.println();\r\n\r\n    mySerial.print(\"{\\\"W\\\":\\\"\");\r\n    mySerial.print(RMS);\r\n    mySerial.print(\"\\\",\\\"W\\\":\\\"\");\r\n    mySerial.print(W);\r\n    mySerial.print(\"\\\"}\");\r\n    mySerial.println();\r\n \r\n    delay(100);\r\n}<\/pre>\n<p>ESP8266<\/p>\n<pre class=\"lang:default decode:true\">#include &lt;SoftwareSerial.h&gt;\r\n\r\nSoftwareSerial mySerial(13, 15); \/\/ RX, TX\r\n\r\nvoid setup() {\r\n    Serial.begin(57600);\r\n    mySerial.begin(57600);\r\n}\r\n\r\nvoid loop() {\r\n    if ( mySerial.available() ) {\r\n        Serial.println(mySerial.readStringUntil('\\n'));\r\n    }\r\n}<\/pre>\n<p>--<\/p>\n<h2>ADS1115<\/h2>\n<ul>\n<li><a href=\"http:\/\/henrysbench.capnfatz.com\/henrys-bench\/arduino-voltage-measurements\/arduino-ads1115-module-getting-started-tutorial\/\" target=\"_blank\" rel=\"noopener\">Arduino ADS1115 Module Getting Started Tutorial<\/a><\/li>\n<li><a href=\"https:\/\/cms.35g.tw\/coding\/arduino-%E4%BD%BF%E7%94%A8-sct013-%E9%87%8F%E9%9B%BB%E6%B5%81ads1115\/\" target=\"_blank\" rel=\"noopener\">Arduino \u4f7f\u7528 SCT013 \u91cf\u96fb\u6d41(ADS1115)<\/a><\/li>\n<\/ul>\n<p>\u66f4\u6e96\u7684\u985e\u6bd4\u6578\u4f4d\u8f49\u4f4d\u5668\u4ee5\u53ca\u53ef\u61c9\u7528\u5728 ESP8266 \u4e0a<\/p>\n<p>--<\/p>\n<div class=\"pvc_clear\"><\/div>\n<p class=\"pvc_stats all \" data-element-id=\"4591\" style=\"\"><i class=\"pvc-stats-icon medium\" aria-hidden=\"true\"><svg aria-hidden=\"true\" focusable=\"false\" data-prefix=\"far\" data-icon=\"chart-bar\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\" class=\"svg-inline--fa fa-chart-bar fa-w-16 fa-2x\"><path fill=\"currentColor\" d=\"M396.8 352h22.4c6.4 0 12.8-6.4 12.8-12.8V108.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v230.4c0 6.4 6.4 12.8 12.8 12.8zm-192 0h22.4c6.4 0 12.8-6.4 12.8-12.8V140.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v198.4c0 6.4 6.4 12.8 12.8 12.8zm96 0h22.4c6.4 0 12.8-6.4 12.8-12.8V204.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v134.4c0 6.4 6.4 12.8 12.8 12.8zM496 400H48V80c0-8.84-7.16-16-16-16H16C7.16 64 0 71.16 0 80v336c0 17.67 14.33 32 32 32h464c8.84 0 16-7.16 16-16v-16c0-8.84-7.16-16-16-16zm-387.2-48h22.4c6.4 0 12.8-6.4 12.8-12.8v-70.4c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v70.4c0 6.4 6.4 12.8 12.8 12.8z\" class=\"\"><\/path><\/svg><\/i> &nbsp;14,772&nbsp;total views, &nbsp;1&nbsp;views today<\/p>\n<div class=\"pvc_clear\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u4e8b\u524d\u53ee\u5680\uff1a \u96fb\u6d41\u5075\u6e2c\u5728\u641c\u5c0b\u8cc7\u6599...<\/p>\n<div class=\"pvc_clear\"><\/div>\n<p class=\"pvc_stats all \" data-element-id=\"4591\" style=\"\"><i class=\"pvc-stats-icon medium\" aria-hidden=\"true\"><svg aria-hidden=\"true\" focusable=\"false\" data-prefix=\"far\" data-icon=\"chart-bar\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\" class=\"svg-inline--fa fa-chart-bar fa-w-16 fa-2x\"><path fill=\"currentColor\" d=\"M396.8 352h22.4c6.4 0 12.8-6.4 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