{"id":107,"date":"2021-06-30T13:01:53","date_gmt":"2021-06-30T13:01:53","guid":{"rendered":"http:\/\/nk-energi.dk\/?page_id=107"},"modified":"2021-07-27T15:34:42","modified_gmt":"2021-07-27T15:34:42","slug":"relativ-fugtighed-og-temperatur","status":"publish","type":"page","link":"http:\/\/nk-energi.dk\/?page_id=107","title":{"rendered":"Relativ fugtighed og temperatur"},"content":{"rendered":"<p>Denne sider viser hvordan man laver en god indeklimam\u00e5ler hvor der kan tilsluttes mange sensorer med en Raspberry Pi. for at kunne forst\u00e5 denne gennemgang kr\u00e6ves der grundl\u00e6ggende viden omkring brug af <a href=\"http:\/\/nk-energi.dk\/?page_id=88\">Linux CLI<\/a>, download af <a href=\"http:\/\/nk-energi.dk\/?page_id=113\">libraries<\/a>, det vil ogs\u00e5 v\u00e6re en fordel at have lidt kendskab til <a href=\"http:\/\/nk-energi.dk\/?page_id=90\">Python programmering<\/a>.<\/p>\n<p>Her ses et diagram over hele ops\u00e6tningen, der skal bruges:<\/p>\n<ul>\n<li>3 DHT22 sensorer (flere kan sidde i alt 26 sensorer p\u00e5 en Raspberry Pi)<\/li>\n<li>Jumper wires<\/li>\n<\/ul>\n<p><img loading=\"lazy\" class=\"alignnone wp-image-487 size-full\" src=\"http:\/\/nk-energi.dk\/wp-content\/uploads\/2021\/07\/DHT22-scematic.png\" alt=\"\" width=\"1802\" height=\"818\" srcset=\"http:\/\/nk-energi.dk\/wp-content\/uploads\/2021\/07\/DHT22-scematic.png 1802w, http:\/\/nk-energi.dk\/wp-content\/uploads\/2021\/07\/DHT22-scematic-300x136.png 300w, http:\/\/nk-energi.dk\/wp-content\/uploads\/2021\/07\/DHT22-scematic-1024x465.png 1024w, http:\/\/nk-energi.dk\/wp-content\/uploads\/2021\/07\/DHT22-scematic-768x349.png 768w, http:\/\/nk-energi.dk\/wp-content\/uploads\/2021\/07\/DHT22-scematic-1536x697.png 1536w\" sizes=\"(max-width: 1802px) 100vw, 1802px\" \/><\/p>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-500\" src=\"http:\/\/nk-energi.dk\/wp-content\/uploads\/2021\/07\/dht22ops.png\" alt=\"\" width=\"924\" height=\"785\" srcset=\"http:\/\/nk-energi.dk\/wp-content\/uploads\/2021\/07\/dht22ops.png 924w, http:\/\/nk-energi.dk\/wp-content\/uploads\/2021\/07\/dht22ops-300x255.png 300w, http:\/\/nk-energi.dk\/wp-content\/uploads\/2021\/07\/dht22ops-768x652.png 768w\" sizes=\"(max-width: 924px) 100vw, 924px\" \/><\/p>\n<table style=\"width: 120%; text-align: left; background-color: lightgrey;\">\n<tbody>\n<tr>\n<td>Her ses de library som skal importeres<\/td>\n<\/tr>\n<tr>\n<td><img loading=\"lazy\" class=\"alignnone size-full wp-image-491\" src=\"http:\/\/nk-energi.dk\/wp-content\/uploads\/2021\/07\/DHT22import.png\" alt=\"\" width=\"855\" height=\"89\" srcset=\"http:\/\/nk-energi.dk\/wp-content\/uploads\/2021\/07\/DHT22import.png 855w, http:\/\/nk-energi.dk\/wp-content\/uploads\/2021\/07\/DHT22import-300x31.png 300w, http:\/\/nk-energi.dk\/wp-content\/uploads\/2021\/07\/DHT22import-768x80.png 768w\" sizes=\"(max-width: 855px) 100vw, 855px\" \/><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<table style=\"width: 120%; text-align: left; background-color: lightgrey;\">\n<tbody>\n<tr>\n<td>Her f\u00e5r hver sensor tildelt en variablerne sensor1 osv. Hern\u00e6st oprettes der en funktion som:<\/p>\n<ul>\n<li>l\u00e6ser sensordata<\/li>\n<li>deler m\u00e5lingerne op i to s\u00e6t variabler en for temperatur og en anden til fugt<\/li>\n<li>afrunder m\u00e5lingerne til et decimal<\/li>\n<li>deler m\u00e5lingerne op i to lister<\/li>\n<\/ul>\n<\/td>\n<\/tr>\n<tr>\n<td><img loading=\"lazy\" class=\"alignnone size-full wp-image-492\" src=\"http:\/\/nk-energi.dk\/wp-content\/uploads\/2021\/07\/DHT22temp_measurement.png\" alt=\"\" width=\"855\" height=\"237\" srcset=\"http:\/\/nk-energi.dk\/wp-content\/uploads\/2021\/07\/DHT22temp_measurement.png 855w, http:\/\/nk-energi.dk\/wp-content\/uploads\/2021\/07\/DHT22temp_measurement-300x83.png 300w, http:\/\/nk-energi.dk\/wp-content\/uploads\/2021\/07\/DHT22temp_measurement-768x213.png 768w\" sizes=\"(max-width: 855px) 100vw, 855px\" \/><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<table style=\"width: 120%; text-align: left; background-color: lightgrey;\">\n<tbody>\n<tr>\n<td>Der laves en funktion som henter dato og tid<\/td>\n<\/tr>\n<tr>\n<td><img loading=\"lazy\" class=\"alignnone size-full wp-image-493\" src=\"http:\/\/nk-energi.dk\/wp-content\/uploads\/2021\/07\/DHT22tid.png\" alt=\"\" width=\"855\" height=\"127\" srcset=\"http:\/\/nk-energi.dk\/wp-content\/uploads\/2021\/07\/DHT22tid.png 855w, http:\/\/nk-energi.dk\/wp-content\/uploads\/2021\/07\/DHT22tid-300x45.png 300w, http:\/\/nk-energi.dk\/wp-content\/uploads\/2021\/07\/DHT22tid-768x114.png 768w\" sizes=\"(max-width: 855px) 100vw, 855px\" \/><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<table style=\"width: 120%; text-align: left; background-color: lightgrey;\">\n<tbody>\n<tr>\n<td>\n<ul>\n<li>Der \u00e5bnes en .csv fil og der oprettes overskrifter til .csv filen<\/li>\n<li>Der laves et while loop som henter m\u00e5lingerne fra temp_measurement() funktionen<\/li>\n<\/ul>\n<\/td>\n<\/tr>\n<tr>\n<td><img loading=\"lazy\" class=\"alignnone size-full wp-image-496\" src=\"http:\/\/nk-energi.dk\/wp-content\/uploads\/2021\/07\/DHT22csv.png\" alt=\"\" width=\"854\" height=\"208\" srcset=\"http:\/\/nk-energi.dk\/wp-content\/uploads\/2021\/07\/DHT22csv.png 854w, http:\/\/nk-energi.dk\/wp-content\/uploads\/2021\/07\/DHT22csv-300x73.png 300w, http:\/\/nk-energi.dk\/wp-content\/uploads\/2021\/07\/DHT22csv-768x187.png 768w\" sizes=\"(max-width: 854px) 100vw, 854px\" \/><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<table style=\"width: 120%; text-align: left; background-color: lightgrey;\">\n<tbody>\n<tr>\n<td>Her ses hele koden samlet<\/td>\n<\/tr>\n<tr>\n<td><img loading=\"lazy\" class=\"alignnone size-full wp-image-480\" src=\"http:\/\/nk-energi.dk\/wp-content\/uploads\/2021\/07\/DHT22kode.png\" alt=\"\" width=\"855\" height=\"669\" srcset=\"http:\/\/nk-energi.dk\/wp-content\/uploads\/2021\/07\/DHT22kode.png 855w, http:\/\/nk-energi.dk\/wp-content\/uploads\/2021\/07\/DHT22kode-300x235.png 300w, http:\/\/nk-energi.dk\/wp-content\/uploads\/2021\/07\/DHT22kode-768x601.png 768w\" sizes=\"(max-width: 855px) 100vw, 855px\" \/><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<table style=\"width: 120%; text-align: left; background-color: lightgrey;\">\n<tbody>\n<tr>\n<td>Installer library og inds\u00e6t koden i et et dokument p\u00e5 din Raspberry Pi<\/td>\n<\/tr>\n<tr>\n<td>$ sudo pip install Adafruit_DHT<\/td>\n<\/tr>\n<tr>\n<td><a href=\"http:\/\/nk-energi.dk\/wp-content\/uploads\/2021\/07\/DHT22kode.rtf\">DHT22kode<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"<p>Denne sider viser hvordan man laver en god indeklimam\u00e5ler hvor der kan tilsluttes mange sensorer med en Raspberry Pi. for at kunne forst\u00e5 denne gennemgang kr\u00e6ves der grundl\u00e6ggende viden omkring brug af Linux CLI, download af libraries, det vil ogs\u00e5 &hellip; <a href=\"http:\/\/nk-energi.dk\/?page_id=107\">L\u00e6s resten <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"onecolumn-page.php","meta":[],"_links":{"self":[{"href":"http:\/\/nk-energi.dk\/index.php?rest_route=\/wp\/v2\/pages\/107"}],"collection":[{"href":"http:\/\/nk-energi.dk\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"http:\/\/nk-energi.dk\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"http:\/\/nk-energi.dk\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/nk-energi.dk\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=107"}],"version-history":[{"count":22,"href":"http:\/\/nk-energi.dk\/index.php?rest_route=\/wp\/v2\/pages\/107\/revisions"}],"predecessor-version":[{"id":540,"href":"http:\/\/nk-energi.dk\/index.php?rest_route=\/wp\/v2\/pages\/107\/revisions\/540"}],"wp:attachment":[{"href":"http:\/\/nk-energi.dk\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=107"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}