{"id":16,"date":"2015-07-22T16:07:32","date_gmt":"2015-07-22T22:07:32","guid":{"rendered":"http:\/\/ferrustronix.com\/blog\/?p=16"},"modified":"2015-07-22T16:16:05","modified_gmt":"2015-07-22T22:16:05","slug":"medir-distancias-con-el-sensor-ultrasonico-hc-sr04","status":"publish","type":"post","link":"http:\/\/ferrustronix.com\/blog\/2015\/07\/22\/medir-distancias-con-el-sensor-ultrasonico-hc-sr04\/","title":{"rendered":"Medir distancias con el Sensor Ultras\u00f3nico HC-SR04"},"content":{"rendered":"<div style=\"text-align: center;\"><strong>Video<\/strong><\/div>\n<div>\n<div class=\"video-container\"><iframe loading=\"lazy\" title=\"Ultrasonidos y Arduino UNO midiendo distancias\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/cYt-a1Emqdc?feature=oembed&#038;wmode=opaque\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/div>\n<\/div>\n<p><strong>Material necesario<\/strong><\/p>\n<ul>\n<li><a href=\"http:\/\/ferrustronix.com\/store\/mx\/sensores\/16-sensor-ultrasonico-hc-sr04.html\" target=\"_blank\">Sensor ultrasonidos HC-SR04<\/a><\/li>\n<li><a href=\"http:\/\/ferrustronix.com\/store\/mx\/arduinos\/8-arduino-mega-2560-r3-generico-cable-usb.html\" target=\"_blank\">Placa Arduino UNO<\/a><\/li>\n<li><a href=\"http:\/\/ferrustronix.com\/store\/mx\/conectores\/12-paquete-40-cables-dupont-macho-macho.html\" target=\"_blank\">Cables<\/a><\/li>\n<li><a href=\"http:\/\/ferrustronix.com\/store\/mx\/arduinos\/8-arduino-mega-2560-r3-generico-cable-usb.html\" target=\"_blank\">Cable USB<\/a><\/li>\n<li>Protoboard<\/li>\n<\/ul>\n<p>Recuerda que todo el material necesario lo puedes encontrar en nuestra tienda on-line<strong><a href=\"http:\/\/www.ferrustronix.com\/store\" target=\"_blank\"> Ferrustronix<\/a><\/strong> con env\u00edo a toda la Republica Mexicana.<\/p>\n<p><strong>\u00bfQu\u00e9 es un Sensor de Ultrasonido\/Ultras\u00f3nico?<\/strong><\/p>\n<div>El sensor de ultrasonidos entra dentro de la categor\u00eda de sensores para medir distancias o superar obst\u00e1culos.<\/div>\n<div>En el siguiente ejemplo, vamos a ocupar un sensor ultras\u00f3nico HC-SR04 para medir distancias. El sensor funciona enviando un ultrasonido (inaudible para el o\u00eddo humano por su alta frecuencia) mediante uno de los cilindros (transductor) y espera a que dicho sonido rebote sobre un objeto y vuelva, siendo captado por el otro\u00a0cilindro.<\/div>\n<div><\/div>\n<div>Este sensor en concreto tiene un rango de distancias sensible entre 3cm y 3m con una precisi\u00f3n de 3mm.<\/div>\n<div><\/div>\n<div>\n<div id=\"attachment_17\" style=\"width: 310px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/ferrustronix.com\/blog\/wp-content\/uploads\/2015\/07\/DSC_060811.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-17\" class=\"size-medium wp-image-17\" src=\"http:\/\/ferrustronix.com\/blog\/wp-content\/uploads\/2015\/07\/DSC_060811-300x169.jpg\" alt=\"Sensor Ultrasonido y Arduino\" width=\"300\" height=\"169\" srcset=\"http:\/\/ferrustronix.com\/blog\/wp-content\/uploads\/2015\/07\/DSC_060811-300x169.jpg 300w, http:\/\/ferrustronix.com\/blog\/wp-content\/uploads\/2015\/07\/DSC_060811-1024x576.jpg 1024w, http:\/\/ferrustronix.com\/blog\/wp-content\/uploads\/2015\/07\/DSC_060811.jpg 1600w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-17\" class=\"wp-caption-text\">Sensor Ultrasonido y Arduino<\/p><\/div>\n<\/div>\n<div>\n<div style=\"text-align: center;\"><b>\u00bfQu\u00e9 recibimos en el sensor?\u00a0<\/b><\/div>\n<p>El tiempo que transcurre entre el env\u00edo y la recepci\u00f3n del ultrasonido.<\/p>\n<div style=\"text-align: center;\"><b>\u00bfC\u00f3mo vamos a traducir dicho tiempo en distancia?<\/b><\/div>\n<div>\u00a0Aprovechando que la velocidad de dicho ultrasonido en el aire es de valor 340 m\/s, o 0,034 cm\/microseg (ya que trabajaremos con cent\u00edmetros y microsegundos). Para calcular la distancia, recordaremos que v=d\/t (definici\u00f3n de velocidad: distancia recorrida en un determinado tiempo).<\/div>\n<div>De la f\u00f3rmula anterior despejamos d, obteniendo d=v\u00b7t, siendo v la constante anteriormente citada y t el valor devuelto por el sensor a la placa Arduino.<\/div>\n<div>Tambi\u00e9n habr\u00e1 que dividir el resultado entre 2 dado que el tiempo recibido es el tiempo de ida y vuelta.<\/div>\n<\/div>\n<div>\n<div id=\"attachment_18\" style=\"width: 252px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/ferrustronix.com\/blog\/wp-content\/uploads\/2015\/07\/ultrasonido-hc1.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-18\" class=\"size-medium wp-image-18\" src=\"http:\/\/ferrustronix.com\/blog\/wp-content\/uploads\/2015\/07\/ultrasonido-hc1-242x300.jpg\" alt=\"Sensor Ultras\u00f3nico HC-SR04\" width=\"242\" height=\"300\" srcset=\"http:\/\/ferrustronix.com\/blog\/wp-content\/uploads\/2015\/07\/ultrasonido-hc1-242x300.jpg 242w, http:\/\/ferrustronix.com\/blog\/wp-content\/uploads\/2015\/07\/ultrasonido-hc1.jpg 795w\" sizes=\"auto, (max-width: 242px) 100vw, 242px\" \/><\/a><p id=\"caption-attachment-18\" class=\"wp-caption-text\">Sensor Ultras\u00f3nico HC-SR04<\/p><\/div>\n<div>El sensor consta de 4 pines: &#8220;VCC&#8221; conectado a la salida de 5V de la placa, &#8220;Trig&#8221; conectado al pin digital de la placa encargado de enviar el pulso ultras\u00f3nico, &#8220;Echo&#8221; al pin de entrada digital que recibir\u00e1 el eco de dicho pulso y &#8220;GND&#8221; a tierra.<\/div>\n<p style=\"text-align: center;\"><b><u>Programa<\/u><\/b><\/p>\n<pre>long distancia;\r\nlong tiempo;\r\nvoid <b>setup<\/b>(){\r\n\u00a0\u00a0<b>Serial<\/b>.begin(9600);\r\n\u00a0\u00a0pinMode(9, OUTPUT); \/*activaci\u00f3n del pin 9 como salida: para el pulso ultras\u00f3nico*\/\r\n\u00a0\u00a0pinMode(8, INPUT); \/*activaci\u00f3n del pin 8 como entrada: tiempo del rebote del ultrasonido*\/\r\n}\r\n\r\nvoid <b>loop<\/b>(){\r\n\u00a0\u00a0digitalWrite(9,LOW); \/* Por cuesti\u00f3n de estabilizaci\u00f3n del sensor*\/\r\n\u00a0\u00a0delayMicroseconds(5);\r\n\u00a0\u00a0digitalWrite(9, HIGH); \/* env\u00edo del pulso ultras\u00f3nico*\/\r\n\u00a0\u00a0delayMicroseconds(10);\r\n\u00a0\u00a0tiempo=pulseIn(8, HIGH); \/* Funci\u00f3n para medir la longitud del pulso entrante. Mide el tiempo que transcurrido entre el env\u00edo\r\n\u00a0\u00a0del\u00a0pulso\u00a0ultras\u00f3nico\u00a0y\u00a0cuando\u00a0el\u00a0sensor\u00a0recibe\u00a0el\u00a0rebote,\u00a0es\u00a0decir:\u00a0desde\u00a0que\u00a0el\u00a0pin\u00a012\u00a0empieza\u00a0a\u00a0recibir\u00a0el\u00a0rebote,\u00a0HIGH,\u00a0hasta\u00a0que\r\n\u00a0\u00a0deja\u00a0de\u00a0hacerlo,\u00a0LOW,\u00a0la\u00a0longitud\u00a0del\u00a0pulso\u00a0entrante*\/\r\n\u00a0\u00a0distancia=\u00a0int(0.017*tiempo); \/*f\u00f3rmula para calcular la distancia obteniendo un valor entero*\/\r\n\u00a0\u00a0\/*Monitorizaci\u00f3n en cent\u00edmetros por el monitor serial*\/\r\n\u00a0\u00a0<b>Serial<\/b>.println(\"Distancia \");\r\n\u00a0\u00a0<b>Serial<\/b>.println(distancia);\r\n\u00a0\u00a0<b>Serial<\/b>.println(\" cm\");\r\n\u00a0\u00a0delay(1000);\r\n}\r\n\r\n<\/pre>\n<\/div>\n<div style=\"text-align: center;\"><\/div>\n<div style=\"text-align: center;\">\n<div><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Video Material necesario Sensor ultrasonidos HC-SR04 Placa Arduino UNO Cables Cable USB Protoboard Recuerda que todo el material necesario lo puedes encontrar en nuestra tienda on-line Ferrustronix con env\u00edo a toda la Republica Mexicana.&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":17,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false},"version":2}},"categories":[10],"tags":[18,16,14,17,15,11,13,12],"class_list":["post-16","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sensores","tag-arduino","tag-distancia","tag-hc-sr04","tag-medicion","tag-medir","tag-sensor","tag-ultrasonico","tag-ultrasonido"],"jetpack_publicize_connections":[],"yoast_head":"<!-- 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