{"id":32549,"date":"2022-04-05T08:00:08","date_gmt":"2022-04-05T06:00:08","guid":{"rendered":"https:\/\/botland.com.pl\/blog\/?p=32549"},"modified":"2025-01-17T09:35:43","modified_gmt":"2025-01-17T08:35:43","slug":"sygnal-pwm-czym-jest","status":"publish","type":"post","link":"https:\/\/botland.com.pl\/blog\/sygnal-pwm-czym-jest\/","title":{"rendered":"Sygna\u0142 PWM \u2013 czym jest?"},"content":{"rendered":"<span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Czas czytania:<\/span> <span class=\"rt-time\"> 3<\/span> <span class=\"rt-label rt-postfix\">min.<\/span><\/span>\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"32549\" class=\"elementor elementor-32549\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-23c7b1d elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"23c7b1d\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-5d521e9\" data-id=\"5d521e9\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-9ce0888 elementor-widget elementor-widget-heading\" data-id=\"9ce0888\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Co to jest PWM i w jaki spos\u00f3b mo\u017cna go odczytywa\u0107?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-ce6d448 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"ce6d448\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-4811003\" data-id=\"4811003\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-4686fd9 elementor-widget elementor-widget-text-editor\" data-id=\"4686fd9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Pod poj\u0119ciem PWM kryje si\u0119 angloj\u0119zyczny skr\u00f3t \u201ePulse Width Modulation\u201d, kt\u00f3ry oznacza modulacj\u0119 szeroko\u015bci impuls\u00f3w. Jest to nic innego jak <b>metoda sterowania uk\u0142adami elektronicznymi przy pomocy manipulacji samym sygna\u0142em steruj\u0105cym<\/b>, a konkretniej jego parametrami technicznymi.\u00a0<span style=\"font-size: 1rem;\">Wynika to z samej charakterystyki fizycznej sygna\u0142u PWM, kt\u00f3ry sk\u0142ada si\u0119 ze wspomnianych wcze\u015bniej impuls\u00f3w. Ich podstawowe <b>parametry dotycz\u0105 czasu pozostania w stanie wysokim<\/b> (warto\u015b\u0107 logiczna\u00a0<\/span><span style=\"font-size: 1rem;\">1) <\/span><b style=\"font-size: 1rem;\">oraz cz\u0119stotliwo\u015bci prze\u0142\u0105czania sygna\u0142u<\/b><span style=\"font-size: 1rem;\"> PWM. Co to dok\u0142adnie oznacza?<\/span><\/p><div class=\"blog-special\" style=\"margin: 15px 0;\"><strong>Sygna\u0142 PWM pompy<\/strong> &#8211; Z\u0142\u0105cze do sterowania sygna\u0142em PWM (modulacja szeroko\u015bci impulsu) umo\u017cliwia szybkie pod\u0142\u0105czenie elektroniki pompy do sterownika, np. z pieca gazowego lub pompy ciep\u0142a. Gdy sygna\u0142 PWM jest pod\u0142\u0105czony, praca pompy jest kontrolowana przez ten sygna\u0142, a w jego braku przez wewn\u0119trzny sterownik pompy.<\/div><p><br \/>Mianem szeroko\u015bci okre\u015bla si\u0119 <b>stosunek czasu, w kt\u00f3rym podczas jednego impulsu PWM do pod\u0142\u0105czonego odbiornika dostarczany by\u0142 \u0142adunek elektryczny<\/b>. Przyk\u0142adowo, je\u015bli pomiar sygna\u0142u PWM wyka\u017ce cz\u0119stotliwo\u015b\u0107 wynosz\u0105c\u0105 300 Hz, to czas poszczeg\u00f3lnego pe\u0142nego impulsu wyniesie 1\/300 sekundy [3,(3) milisekundy].\u00a0<span style=\"font-size: 1rem;\">Analogicznie przeliczy\u0107 mo\u017cna czas, przez jaki w ci\u0105gu jednego impulsu PWM zostanie podany pr\u0105d \u2013 wystarczy tylko otrzymany wcze\u015bniej wynik przemno\u017cy\u0107 przez wype\u0142nienie.<\/span><\/p><p>Zatem jak odbywa si\u0119 pomiar sygna\u0142u PWM? <b>Najpro\u015bciej mo\u017cna dokona\u0107 tego, badaj\u0105c go przy pomocy <a href=\"https:\/\/botland.com.pl\/577-oscyloskopy\" data-wpel-link=\"internal\">oscyloskopu<\/a><\/b> laboratoryjnego. Uzyskuje si\u0119 wtedy tak\u017ce jego bezpo\u015bredni\u0105 interpretacj\u0119 graficzn\u0105.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-934a833 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"934a833\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-b30cd1d\" data-id=\"b30cd1d\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-285ef89 elementor-widget elementor-widget-text-editor\" data-id=\"285ef89\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Pr\u0105d b\u0119dzie p\u0142yn\u0105\u0107 przez dany uk\u0142ad skokowo, a <b>szeroko\u015b\u0107 poszczeg\u00f3lnego impulsu wyznacza\u0107 b\u0119dzie wsp\u00f3\u0142czynnik wype\u0142nienia<\/b> ilustruj\u0105cy czas, w kt\u00f3rym do odbiornika podane zosta\u0142o zasilanie. Im poszczeg\u00f3lne \u201eg\u00f3rki\u201d b\u0119d\u0105 szersze, tym d\u0142u\u017cej podawana b\u0119dzie energia.<\/p><p>Z kolei, je\u015bli pomiar sygna\u0142u PWM na oscyloskopie laboratoryjnym poka\u017ce lini\u0119 ci\u0105g\u0142\u0105 (zak\u0142adaj\u0105c wi\u0119ksz\u0105 ni\u017c 0 warto\u015b\u0107), to znaczy, \u017ce do pod\u0142\u0105czonego odbiornika ci\u0105gle p\u0142ynie pr\u0105d, a tym samym wsp\u00f3\u0142czynnik wype\u0142nienia wynosi\u0107 b\u0119dzie 100%.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-aae5cb1\" data-id=\"aae5cb1\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-7cfe626 elementor-widget elementor-widget-image\" data-id=\"7cfe626\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"768\" height=\"437\" src=\"https:\/\/botland.com.pl\/blog\/wp-content\/uploads\/2022\/03\/sygnal-PWM-50-768x437.jpg\" class=\"attachment-medium_large size-medium_large wp-image-33413\" alt=\"Sygna\u0142 PWM\" srcset=\"https:\/\/botland.com.pl\/blog\/wp-content\/uploads\/2022\/03\/sygnal-PWM-50-768x437.jpg 768w, https:\/\/botland.com.pl\/blog\/wp-content\/uploads\/2022\/03\/sygnal-PWM-50-300x171.jpg 300w, https:\/\/botland.com.pl\/blog\/wp-content\/uploads\/2022\/03\/sygnal-PWM-50.jpg 789w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Przyk\u0142adowy przebieg sygna\u0142u PWM o wsp\u00f3\u0142czynniku wype\u0142nienia 50%<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-2cded75 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"2cded75\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-3bc52ea\" data-id=\"3bc52ea\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-ee4c4cf elementor-widget elementor-widget-heading\" data-id=\"ee4c4cf\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Gdzie PWM znajduje swoje zastosowanie?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-e40abbc elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"e40abbc\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-f0f105f\" data-id=\"f0f105f\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-89cc896 elementor-widget elementor-widget-text-editor\" data-id=\"89cc896\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Sygna\u0142 PWM <b>stosowany jest mi\u0119dzy innymi w <a href=\"https:\/\/botland.com.pl\/895-zasilacze-dogniazdkowe\" data-wpel-link=\"internal\">zasilaczach impulsowych<\/a><\/b>, kt\u00f3re dzi\u0119ki niemu s\u0105 w stanie sterowa\u0107 pod\u0142\u0105czonymi do niego urz\u0105dzeniami. Najcz\u0119\u015bciej jednak tego typu sygna\u0142y odpowiadaj\u0105 za <b>precyzyjn\u0105 regulacj\u0119 pr\u0119dko\u015bci obrotowej silnika<\/b> elektrycznego, chocia\u017c <b>mo\u017ce on tak\u017ce pe\u0142ni\u0107 funkcj\u0119 sterownika o\u015bwietleniowego<\/b>. Stosuj\u0105c do sterowania sygna\u0142 PWM o niskim wsp\u00f3\u0142czynniku wype\u0142nienia otrzymujemy efekt spowolnienia pracy silnika lub efekt \u015bciemnienia w przypadku \u017ar\u00f3de\u0142 o\u015bwietlenia. Zwi\u0119kszaj\u0105c jego warto\u015b\u0107 silnik obraca si\u0119 szybciej, a dioda LED emituje wi\u0119cej \u015bwiat\u0142a.<\/p><p>R\u00f3wnie cz\u0119sto impuls PWM <b>jest stosowany w <a href=\"https:\/\/botland.com.pl\/531-wentylatory-montazowe\" data-wpel-link=\"internal\">wentylatorach<\/a><\/b>. Pozwala to na dostosowanie wydajno\u015bci przep\u0142ywu przet\u0142aczanego przez nie powietrza, przy jednoczesnej minimalizacji ha\u0142asu generowanego przez poszczeg\u00f3lne \u0142opaty wiatraka.<\/p><p>PWM mo\u017cna tak\u017ce spotka\u0107 <b>we wzmacniaczach impulsowych<\/b>, a tak\u017ce uk\u0142adach sterowniczych, kt\u00f3rych podstawowym zadaniem jest <b>zarz\u0105dzanie prac\u0105 serwomotor\u00f3w<\/b>. To w\u0142a\u015bnie dlatego precyzyjny pomiar sygna\u0142u PWM jest tak wa\u017cny w projektach opartych o mikrokomputery z rodziny <a href=\"https:\/\/botland.com.pl\/234-arduino\" data-wpel-link=\"internal\">Arduino<\/a> oraz <a href=\"https:\/\/botland.com.pl\/399-raspberry-pi\" data-wpel-link=\"internal\">Raspberry Pi<\/a>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-9c86f41 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"9c86f41\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-94d4750\" data-id=\"94d4750\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-4796400 elementor-widget elementor-widget-heading\" data-id=\"4796400\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">W jaki spos\u00f3b zastosowa\u0107 modulacj\u0119 sygna\u0142u PWM?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-f116484 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"f116484\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-f3a915a\" data-id=\"f3a915a\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-f242920 elementor-widget elementor-widget-text-editor\" data-id=\"f242920\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Wiesz ju\u017c, gdzie stosowany jest sygna\u0142 PWM. Co to wszystko jednak oznacza w praktyce? Zwi\u0105zek z tym maj\u0105 wszelkiego rodzaju odbiorniki pr\u0105du, takie jak mi\u0119dzy innymi silniki elektryczne, \u017car\u00f3wki, diody LED, a tak\u017ce serwomotory. Wszystkie tego typu\u00a0<b>urz\u0105dzenia mog\u0105 by\u0107 sterowane dzi\u0119ki zastosowaniu zjawiska modulacji szeroko\u015bci impuls\u00f3w<\/b>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-153880c elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"153880c\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-9c3aaaf\" data-id=\"9c3aaaf\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-e8d4cf5 elementor-widget elementor-widget-image\" data-id=\"e8d4cf5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"540\" height=\"540\" src=\"https:\/\/botland.com.pl\/blog\/wp-content\/uploads\/2021\/10\/Arduino-Uno-rev-3.jpg\" class=\"attachment-large size-large wp-image-30384\" alt=\"Minikomputer Arduino\" srcset=\"https:\/\/botland.com.pl\/blog\/wp-content\/uploads\/2021\/10\/Arduino-Uno-rev-3.jpg 540w, https:\/\/botland.com.pl\/blog\/wp-content\/uploads\/2021\/10\/Arduino-Uno-rev-3-300x300.jpg 300w, https:\/\/botland.com.pl\/blog\/wp-content\/uploads\/2021\/10\/Arduino-Uno-rev-3-150x150.jpg 150w\" sizes=\"(max-width: 540px) 100vw, 540px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-93cdd17 elementor-align-center elementor-widget elementor-widget-button\" data-id=\"93cdd17\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/botland.com.pl\/arduino-seria-podstawowa-oryginalne-plytki\/1060-arduino-uno-rev3-a000066-8058333490090.html\" data-wpel-link=\"internal\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">SPRAWD\u0179<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-8aa7f20\" data-id=\"8aa7f20\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-e014a18 elementor-widget elementor-widget-text-editor\" data-id=\"e014a18\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><\/p>\n<p>Dlatego te\u017c sygna\u0142 PWM stanowi serce wielu projekt\u00f3w opartych o p\u0142ytki rozwojowe z rodziny Arduino. Przy pomocy minikomputer\u00f3w tego rodzaju mo\u017cliwy jest nie tylko sam pomiar sygna\u0142u PWM, lecz r\u00f3wnie\u017c jego praktycznie dowolna generacja.&nbsp;Wystarczy tylko, posi\u0142kuj\u0105c si\u0119 funkcjami \u201epwmCounter\u201d oraz \u201epwmValue\u201d,&nbsp;<b>napisa\u0107 stosunkowo prosty kod,&nbsp;<\/b>kt\u00f3rego celem b\u0119dzie zarz\u0105dzanie zewn\u0119trznymi modu\u0142ami i urz\u0105dzeniami pod\u0142\u0105czonymi do&nbsp;<a href=\"https:\/\/botland.com.pl\/234-arduino\" data-wpel-link=\"internal\">minikomputera Arduino<\/a>. Najpro\u015bciej rzecz ujmuj\u0105c,&nbsp;<b>okre\u015blony pin wyj\u015bciowy p\u0142ytki b\u0119dzie naprzemiennie podawa\u0142 i odcina\u0142 napi\u0119cie w \u015bci\u015ble okre\u015blonym, niewielkim odst\u0119pie czasu<\/b>. W praktyce oznacza to, \u017ce \u015brednia warto\u015b\u0107 napi\u0119cia na danym pinie, zmniejszy si\u0119 adekwatnie do parametr\u00f3w zastosowanego sygna\u0142u PWM.&nbsp;<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-b75651f elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"b75651f\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-d985225\" data-id=\"d985225\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5d0fa3d elementor-widget elementor-widget-text-editor\" data-id=\"5d0fa3d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-size: 1rem;\">Zatem jak wykorzysta\u0107 sygna\u0142 PWM w praktyce? <\/span><b style=\"font-size: 1rem;\">Przy jego pomocy mo\u017cna w \u0142atwy spos\u00f3b dostosowa\u0107 jasno\u015b\u0107 diody LED<\/b><span style=\"font-size: 1rem;\"> wykorzystywanej np. do do\u015bwietlania otoczenia znajduj\u0105cego si\u0119 w kadrze kamery pod\u0142\u0105czonej do mikrokomputera.\u00a0<\/span><span style=\"font-size: 1rem;\">W tym przypadku nale\u017cy jednak pami\u0119ta\u0107, by cz\u0119stotliwo\u015b\u0107 generowanego sygna\u0142u PWM pokrywa\u0142a si\u0119 z parametrem przes\u0142ony aparatu \u2013 w przeciwnym wypadku obraz b\u0119dzie nara\u017cony na powstawanie charakterystycznych artefakt\u00f3w pogarszaj\u0105cych jako\u015b\u0107 zapisywanego filmu.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-3b0b022 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"3b0b022\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-6e21511\" data-id=\"6e21511\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-f3ce132 elementor-widget elementor-widget-text-editor\" data-id=\"f3ce132\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div id=\"k-faq-accord\">\n<h2>Sygna\u0142 PWM &#8211; FAQ<\/h2>\n\n<div class=\"tabs\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/FAQPage\">\n<div class=\"tab\" itemprop=\"mainEntity\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Question\"><input id=\"chck1\" type=\"checkbox\" \/>\n<h3><label class=\"tab-label\" itemprop=\"name\" for=\"chck1\">Czym jest sygna\u0142 PWM?<label><\/h3>\n<div class=\"tab-content\" itemprop=\"acceptedAnswer\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Answer\">\n\n<div itemprop=\"text\">Sygna\u0142 PWM (z ang. pulse width modulation \u2013 modulacja szeroko\u015bci impuls\u00f3w) jest wykorzystywany do sterowania r\u00f3\u017cnego rodzaju uk\u0142adami elektrotechnicznymi za po\u015brednictwem manipulowania sygna\u0142em steruj\u0105cym. Sygna\u0142 PWM jest z\u0142o\u017cony z impuls\u00f3w. Kluczowe parametry wspomnianych impuls\u00f3w to czas pozostawania w tak zwanym stanie wysokim i cz\u0119stotliwo\u015b\u0107 z jak\u0105 jest prze\u0142\u0105czany sygna\u0142u PWM.\n<\/div>\n\n<\/div>\n<\/div>\n\n<div class=\"tab\" itemprop=\"mainEntity\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Question\"><input id=\"chck2\" type=\"checkbox\" \/>\n<h3><label class=\"tab-label\" itemprop=\"name\" for=\"chck2\">Co to jest PWM w samochodzie?<\/label><\/h3>\n<div class=\"tab-content\" itemprop=\"acceptedAnswer\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Answer\">\n\n<div itemprop=\"text\">Sygna\u0142 PWM jest wykorzystywany w pojazdach mechanicznych m.in. do sterowania zaworami recyrkulacji spalin. Ponadto steruje prac\u0105 przepustnicy, a tak\u017ce zawor&oacute;w elektropneumatycznych oraz pompy paliwowej. Wi\u0119cej na temat sygna\u0142u PWM i jego zastosowania mo\u017cna znale\u017a\u0107 w <a href=\"https:\/\/botland.com.pl\/blog\/sygnal-pwm-czym-jest\/\" data-wpel-link=\"internal\">artykule<\/a> zamieszczonym na \u0142amach naszego bloga.\n<\/div>\n\n<\/div>\n<\/div>\n\n<div class=\"tab\" itemprop=\"mainEntity\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Question\"><input id=\"chck3\" type=\"checkbox\" \/>\n<h3><label class=\"tab-label\" itemprop=\"name\" for=\"chck3\">Jak powstaje sygna\u0142 PWM?<\/label><\/h3>\n<div class=\"tab-content\" itemprop=\"acceptedAnswer\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Answer\">\n\n<div itemprop=\"text\">Sygna\u0142 PWM nale\u017cy do grupy sygna\u0142\u00f3w cyfrowych generowanych przez kontrolery PWN. Opisywany sygna\u0142 wykorzystuje si\u0119 do kodowania poziom\u00f3w r\u00f3\u017cnego rodzaju sygna\u0142\u00f3w analogowych.\n<\/div>\n\n<\/div>\n<\/div>\n\n<div class=\"tab\" itemprop=\"mainEntity\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Question\"><input id=\"chck4\" type=\"checkbox\" \/>\n<h3><label class=\"tab-label\" itemprop=\"name\" for=\"chck4\">Jak sterowa\u0107 PWM?<\/label><\/h3>\n<div class=\"tab-content\" itemprop=\"acceptedAnswer\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Answer\">\n\n<div itemprop=\"text\">Sygna\u0142 PWM mo\u017ce by\u0107 z powodzeniem wykorzystywany do sterowania r&oacute;\u017cnymi odbiornikami pr\u0105du, takimi jak \u017car&oacute;wki, serwomotory, diody LED, a tak\u017ce silniki elektryczne. Do sterowania sygna\u0142em PWM doskonale nadaje si\u0119 <a href=\"https:\/\/botland.com.pl\/234-arduino\" data-wpel-link=\"internal\">Arduino<\/a>. Wykorzystuj\u0105c funkcje &bdquo;pwmValue&rdquo; i &bdquo;pwmCounter&rdquo; wystarczy napisa\u0107 prosty kod umo\u017cliwiaj\u0105cy sterowanie pod\u0142\u0105czonymi urz\u0105dzeniami i modu\u0142ami.\n<\/div>\n\n<\/div>\n<\/div>\n\n\n<\/div>\n<\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Chyba ka\u017cda osoba zajmuj\u0105ca si\u0119 elektronik\u0105 u\u017cytkow\u0105 spotka\u0142a si\u0119 ze skr\u00f3tem PWM. Co to jest i do czego mo\u017cna to wykorzysta\u0107 w praktyce?<\/p>\n","protected":false},"author":20,"featured_media":62801,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[136,20],"tags":[35,147,168],"class_list":["post-32549","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ciekawostki","category-porady","tag-arduino-tag","tag-elektronika","tag-nauka"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Sygna\u0142 PWM \u2013 czym jest? - Botland<\/title>\n<meta name=\"description\" content=\"Chyba ka\u017cda osoba zajmuj\u0105ca si\u0119 elektronik\u0105 u\u017cytkow\u0105 spotka\u0142a si\u0119 ze skr\u00f3tem PWM. 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