{"id":9468,"date":"2023-09-19T09:59:00","date_gmt":"2023-09-19T09:59:00","guid":{"rendered":"https:\/\/www.fambach.net\/?p=9468"},"modified":"2024-01-26T16:43:09","modified_gmt":"2024-01-26T16:43:09","slug":"preview-strommessung-mit-dem-acs712","status":"publish","type":"post","link":"https:\/\/www.fambach.net\/en\/preview-strommessung-mit-dem-acs712\/","title":{"rendered":"Preview &#8211; Strommessung mit dem ACS712"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_73 ez-toc-wrap-left counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.fambach.net\/en\/preview-w600-pico-v1-0-0-1mb-flash\/#Fakten\" title=\"Facts\">Facts<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.fambach.net\/en\/preview-w600-pico-v1-0-0-1mb-flash\/#Ansichten\" title=\"Views\">Views<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.fambach.net\/en\/preview-w600-pico-v1-0-0-1mb-flash\/#Sonstiges\" title=\"Miscellaneous\">Miscellaneous<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.fambach.net\/en\/preview-w600-pico-v1-0-0-1mb-flash\/#MicroPython\" title=\"MicroPython\">MicroPython<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.fambach.net\/en\/preview-w600-pico-v1-0-0-1mb-flash\/#Verwandte_Beitrage\" title=\"Related Posts\">Related Posts<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.fambach.net\/en\/preview-w600-pico-v1-0-0-1mb-flash\/#Quellen\" title=\"Sources\">Sources<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n\n<p>Der ACS712 erm\u00f6glicht es, angeschlossen an einen Microcontroller, den Strom zu messen. Den Chip gibt es mit einer kleinen Schaltung fertig auf Platine. Es gibt diese in verschiedenen Varianten abh\u00e4nger von der maximal zu messenden Stromst\u00e4rke (5,20,30 Ampere). Die gemessene Stromst\u00e4rke wird in eine proportionale Spannung umgewandelt und an einem Pin ausgegeben. Dieser kann \u00fcber einen analogen Port gelesen werden.<\/p>\n\n\n\n<p><strong>Was ist ein Preview<\/strong>: Da ich immer mehr den \u00dcberblick \u00fcber die bestellte Hardware verliere, werde ich nach der Bestellung eine kleine Vorschau schreiben. Wenn ich dann zu der Hardware komme werde ich das ensprechende Preview erweitern oder durch einen richtigen Beitrag ersetzen. Somit erhaltet ihr die M\u00f6glichkeit schon mal die bald Kommende Hardware zu besichtigen und zu kommentieren. Die Beitr\u00e4ge werde ich dann nach euren Kommentaren oder nach meiner Laune und Zeit priorisieren ;). <\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"800\" data-id=\"9472\" src=\"https:\/\/www.fambach.net\/wp-content\/uploads\/Halle-Aktuelle-Sensor-Modul-ACS712-modul-5A-20A-30A-Halle-Aktuelle-Sensor-Modul-5A-20A-30A.jpg\" alt=\"\" class=\"wp-image-9472\"\/><\/figure>\n<\/figure>\n\n\n\n<h1 class=\"wp-block-heading\">Description<\/h1>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Beschreibugn<\/th><th>5A<\/th><th>20A<\/th><th>30A<\/th><\/tr><\/thead><tbody><tr><td>Versorgungsspannung<\/td><td>5V<\/td><td>5V<\/td><td>5V<\/td><\/tr><tr><td>Max Spannung bei 0Ampere<\/td><td>2,5V<\/td><td>2,5V<\/td><td>2,5V<\/td><\/tr><tr><td>Skalierung<\/td><td>185 mV\/A<\/td><td>100 mV\/A<\/td><td>66 mV\/A<\/td><\/tr><tr><td>Chip<\/td><td>ACS712ELC-05A<\/td><td>ACS712ELC-20A<\/td><td>ACS712ELC-30A<\/td><\/tr><tr><td>Temperaturbereich<\/td><td>-40\u00b0C bis 85\u00b0C<\/td><td>-40\u00b0C bis 85\u00b0C<\/td><td>-40\u00b0C bis 85\u00b0C<\/td><\/tr><tr><td><\/td><td><\/td><td><\/td><td><\/td><\/tr><tr><td><\/td><td><\/td><td><\/td><td><\/td><\/tr><tr><td><\/td><td><\/td><td><\/td><td><\/td><\/tr><tr><td>Ma\u00dfe<\/td><td>33mm x 13mm x 15mm<\/td><td>33mm x 13mm x 15mm<\/td><td>33mm x 13mm x 15mm<\/td><\/tr><tr><td>Gewicht<\/td><td>5g<\/td><td>5g<\/td><td>5g<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">Technische Daten von diversen Quellen (siehe unten)<\/figcaption><\/figure>\n\n\n\n<p>Liegt kein Strom an gibt der ACS eine Spannung von 2,5V aus. Liegt ein Strom an, steigt oder sinkt die Spannung je nach Polung \u00fcber oder unter dem Mittelwert. <\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"592\" height=\"370\" src=\"https:\/\/www.fambach.net\/wp-content\/uploads\/ACS712_AmperToVoltDiagram.jpg\" alt=\"\" class=\"wp-image-9469\"\/><figcaption class=\"wp-element-caption\">Source: <a href=\"https:\/\/www.allegromicro.com\/~\/media\/files\/datasheets\/acs712-datasheet.ashx\" target=\"_blank\" rel=\"noreferrer noopener\">Datenblatt<\/a><\/figcaption><\/figure>\n\n\n\n<p>Abh\u00e4ngig vom Sensor ergeben sich bei einer 8Bit ADC folgende Aufl\u00f6sung:<\/p>\n\n\n\n<p>5A \/ (1024\/2) = 5A \/ 512 = 0,009766A = 9,766mA<\/p>\n\n\n\n<p>20A\/ 512 = 0,0390625A = 39mA<\/p>\n\n\n\n<p>30A\/ 512 = 0,05859375A = 59mA<\/p>\n\n\n\n<div data-wp-interactive=\"core\/file\" class=\"wp-block-file\"><object data-wp-bind--hidden=\"!state.hasPdfPreview\"  class=\"wp-block-file__embed\" data=\"https:\/\/www.fambach.net\/wp-content\/uploads\/ACS712-Datasheet.pdf\" type=\"application\/pdf\" style=\"width:100%;height:600px\" aria-label=\"Embed of ACS712-Datasheet.\"><\/object><a id=\"wp-block-file--media-edb3c85b-6179-45af-b30f-67ec163e84bc\" href=\"https:\/\/www.fambach.net\/wp-content\/uploads\/ACS712-Datasheet.pdf\">ACS712-Datasheet<\/a><a href=\"https:\/\/www.fambach.net\/wp-content\/uploads\/ACS712-Datasheet.pdf\" class=\"wp-block-file__button wp-element-button\" download aria-describedby=\"wp-block-file--media-edb3c85b-6179-45af-b30f-67ec163e84bc\">Download<\/a><\/div>\n\n\n\n<h1 class=\"wp-block-heading\">Libraries<\/h1>\n\n\n\n<p>Ich habe in der Aruino zwei Bibliotheken hierzu gefunden, unter Github gibt es noch ein paar mehr.<\/p>\n\n\n\n<p><a href=\"https:\/\/github.com\/RobTillaart\/ACS712\">https:\/\/github.com\/RobTillaart\/ACS712<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/github.com\/Warlib1975\/Irms_calc\">https:\/\/github.com\/Warlib1975\/Irms_calc<\/a><\/p>\n\n\n\n<p>Die erste Bibliothek enth\u00e4lt ausgefeilte Gl\u00e4ttungsalgorithmen die zweite ist eher klein gehalten.<\/p>\n\n\n\n<p>Die folgende Bibliothek ist unter Github verf\u00fcgbar muss aber manuell eingebunden werden. Sie erm\u00f6glicht das kontinuierliche Monitoring und die Berechnung der Energie.<\/p>\n\n\n\n<p><a href=\"https:\/\/github.com\/pieman64\/ESPecoMon\">https:\/\/github.com\/pieman64\/ESPecoMon<\/a><\/p>\n\n\n\n<p><\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Conclusion<\/h1>\n\n\n\n<p>Der Sensor macht was er soll, die Genauigkeit steht und f\u00e4llt mit dem verwendeten ADC, siehe hierzu auch Wolles Beitrag in den gelinkten Quellen.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Related Posts<\/h1>\n\n\n<div class=\"display-posts-listing\">\n<div class=\"listing-item\"><a class=\"image\" href=\"https:\/\/www.fambach.net\/en\/preview-prototyping-platinen\/\"><img loading=\"lazy\" decoding=\"async\" width=\"200\" height=\"128\" src=\"https:\/\/www.fambach.net\/wp-content\/uploads\/20240209_135846.jpg\" class=\"attachment-thumbnail size-thumbnail wp-post-image\" alt=\"\" \/><\/a> <a class=\"title\" href=\"https:\/\/www.fambach.net\/en\/preview-prototyping-platinen\/\">Preview &#8211; Prototyping Platinen<\/a><\/div>\n<div class=\"listing-item\"><a class=\"image\" href=\"https:\/\/www.fambach.net\/en\/preview-irf520n-mosfet-auf-board\/\"><img loading=\"lazy\" decoding=\"async\" width=\"200\" height=\"78\" src=\"https:\/\/www.fambach.net\/wp-content\/uploads\/SingleMOSFETBoard_banner.jpg\" class=\"attachment-thumbnail size-thumbnail wp-post-image\" alt=\"\" \/><\/a> <a class=\"title\" href=\"https:\/\/www.fambach.net\/en\/preview-irf520n-mosfet-auf-board\/\">Preview &#8211; IRF520N MOSFET auf Board<\/a><\/div>\n<div class=\"listing-item\"><a class=\"image\" href=\"https:\/\/www.fambach.net\/en\/preview-template\/\"><img loading=\"lazy\" decoding=\"async\" width=\"200\" height=\"99\" src=\"https:\/\/www.fambach.net\/wp-content\/uploads\/20240202_180600.jpg\" class=\"attachment-thumbnail size-thumbnail wp-post-image\" alt=\"\" \/><\/a> <a class=\"title\" href=\"https:\/\/www.fambach.net\/en\/preview-template\/\">Preview &#8211; Open-Smart USB\/Serial Adapter<\/a><\/div>\n<div class=\"listing-item\"><a class=\"image\" href=\"https:\/\/www.fambach.net\/en\/preview-strommessung-mit-dem-acs712\/\"><img loading=\"lazy\" decoding=\"async\" width=\"200\" height=\"150\" src=\"https:\/\/www.fambach.net\/wp-content\/uploads\/20a-range-acs712-current-sensor-module.jpg\" class=\"attachment-thumbnail size-thumbnail wp-post-image\" alt=\"\" \/><\/a> <a class=\"title\" href=\"https:\/\/www.fambach.net\/en\/preview-strommessung-mit-dem-acs712\/\">Preview &#8211; Strommessung mit dem ACS712<\/a><\/div>\n<div class=\"listing-item\"><a class=\"image\" href=\"https:\/\/www.fambach.net\/en\/preview-atmel-tiny-85\/\"><img loading=\"lazy\" decoding=\"async\" width=\"200\" height=\"149\" src=\"https:\/\/www.fambach.net\/wp-content\/uploads\/Digipark-1.jpg\" class=\"attachment-thumbnail size-thumbnail wp-post-image\" alt=\"\" \/><\/a> <a class=\"title\" href=\"https:\/\/www.fambach.net\/en\/preview-atmel-tiny-85\/\">Preview &#8211; Atmel Tiny 85<\/a><\/div>\n<div class=\"listing-item\"><a class=\"title\" href=\"https:\/\/www.fambach.net\/en\/preview-aht15-i%c2%b2c-temp-freuchte-sensor\/\">Preview &#8211; AHT15 I\u00b2C Temp &#038; Freuchte Sensor<\/a><\/div>\n<div class=\"listing-item\"><a class=\"image\" href=\"https:\/\/www.fambach.net\/en\/preview-tt-motoren-mit-hal-sensor\/\"><img loading=\"lazy\" decoding=\"async\" width=\"200\" height=\"61\" src=\"https:\/\/www.fambach.net\/wp-content\/uploads\/20230321_163633.jpg\" class=\"attachment-thumbnail size-thumbnail wp-post-image\" alt=\"\" \/><\/a> <a class=\"title\" href=\"https:\/\/www.fambach.net\/en\/preview-tt-motoren-mit-hal-sensor\/\">Preview &#8211; TT Motoren mit Hal Sensor<\/a><\/div>\n<div class=\"listing-item\"><a class=\"image\" href=\"https:\/\/www.fambach.net\/en\/preview-arduino-motor-shield-mit-l298p\/\"><img loading=\"lazy\" decoding=\"async\" width=\"200\" height=\"96\" src=\"https:\/\/www.fambach.net\/wp-content\/uploads\/20230321_152656.jpg\" class=\"attachment-thumbnail size-thumbnail wp-post-image\" alt=\"\" \/><\/a> <a class=\"title\" href=\"https:\/\/www.fambach.net\/en\/preview-arduino-motor-shield-mit-l298p\/\">Preview \u2013 Arduino Motor Shield with L298P<\/a><\/div>\n<div class=\"listing-item\"><a class=\"image\" href=\"https:\/\/www.fambach.net\/en\/preview-esp01-relais-modul\/\"><img loading=\"lazy\" decoding=\"async\" width=\"200\" height=\"81\" src=\"https:\/\/www.fambach.net\/wp-content\/uploads\/ESP01RelaisModul-perspectiveLeft.jpg\" class=\"attachment-thumbnail size-thumbnail wp-post-image\" alt=\"\" \/><\/a> <a class=\"title\" href=\"https:\/\/www.fambach.net\/en\/preview-esp01-relais-modul\/\">ESP01 \u2013 Relay Board<\/a><\/div>\n<div class=\"listing-item\"><a class=\"image\" href=\"https:\/\/www.fambach.net\/en\/preview-w600-pico-v1-0-0-1mb-flash\/\"><img loading=\"lazy\" decoding=\"async\" width=\"200\" height=\"113\" src=\"https:\/\/www.fambach.net\/wp-content\/uploads\/H894ba9ad00a34528a8d0ee254f411cd9D.jpg\" class=\"attachment-thumbnail size-thumbnail wp-post-image\" alt=\"\" \/><\/a> <a class=\"title\" href=\"https:\/\/www.fambach.net\/en\/preview-w600-pico-v1-0-0-1mb-flash\/\">Preview \u2013 W600-Pico V1.0.0 1MB Flash<\/a><\/div>\n<\/div>\n\n\n\n<h1 class=\"wp-block-heading\">Sources<\/h1>\n\n\n\n<p><\/p>\n\n\n\n<p><a href=\"https:\/\/wolles-elektronikkiste.de\/acs712-stromsensor\">https:\/\/wolles-elektronikkiste.de\/acs712-stromsensor<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/funduino.de\/nr-41-stromstaerkesensor-arduino\">https:\/\/funduino.de\/nr-41-stromstaerkesensor-arduino<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/github.com\/RobTillaart\/ACS712\">https:\/\/github.com\/RobTillaart\/ACS712<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/github.com\/Warlib1975\/Irms_calc\">https:\/\/github.com\/Warlib1975\/Irms_calc<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/github.com\/pieman64\/ESPecoMon\">https:\/\/github.com\/pieman64\/ESPecoMon<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1509\/1638\/files\/ACS712_Stromsensor_mit_20A_Datenblatt_e1f4bcee-65bf-48b4-9146-04dad9f5a57d.pdf?v=1656500138\" target=\"_blank\" rel=\"noreferrer noopener\">Datenblatt von AZ Delivery<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/www.christians-shop.de\/Stromsensor-ACS712-5A\">https:\/\/www.christians-shop.de\/Stromsensor-ACS712-5A<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Der ACS712 erm\u00f6glicht es, angeschlossen an einen Microcontroller, den Strom zu messen. Den Chip gibt es mit einer kleinen Schaltung fertig auf Platine. Es gibt diese in verschiedenen Varianten abh\u00e4nger von der maximal zu messenden Stromst\u00e4rke (5,20,30 Ampere). Die gemessene Stromst\u00e4rke wird in eine proportionale Spannung umgewandelt und an einem Pin ausgegeben. Dieser kann \u00fcber &#8230;<\/p>\n<a href=\"https:\/\/www.fambach.net\/en\/preview-w600-pico-v1-0-0-1mb-flash\/\" class=\"read-more-link\">Continue reading <span class=\"screen-reader-text\">\"Preview &#8211; W600-Pico V1.0.0 1MB Flash\"<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a>","protected":false},"author":1,"featured_media":9473,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"no","_lmt_disable":"no","footnotes":""},"categories":[625,701],"tags":[702,703,705,704,706],"modified_by":"sfambach","_links":{"self":[{"href":"https:\/\/www.fambach.net\/en\/wp-json\/wp\/v2\/posts\/9468"}],"collection":[{"href":"https:\/\/www.fambach.net\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fambach.net\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fambach.net\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fambach.net\/en\/wp-json\/wp\/v2\/comments?post=9468"}],"version-history":[{"count":5,"href":"https:\/\/www.fambach.net\/en\/wp-json\/wp\/v2\/posts\/9468\/revisions"}],"predecessor-version":[{"id":10169,"href":"https:\/\/www.fambach.net\/en\/wp-json\/wp\/v2\/posts\/9468\/revisions\/10169"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.fambach.net\/en\/wp-json\/wp\/v2\/media\/9473"}],"wp:attachment":[{"href":"https:\/\/www.fambach.net\/en\/wp-json\/wp\/v2\/media?parent=9468"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fambach.net\/en\/wp-json\/wp\/v2\/categories?post=9468"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fambach.net\/en\/wp-json\/wp\/v2\/tags?post=9468"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}