{"id":19793,"date":"2026-01-17T12:57:47","date_gmt":"2026-01-17T04:57:47","guid":{"rendered":"https:\/\/lorentzzi.com\/?p=19793"},"modified":"2026-01-17T15:03:40","modified_gmt":"2026-01-17T07:03:40","slug":"3-methods-for-counting-using-safety-light-curtains-and-counters","status":"publish","type":"post","link":"https:\/\/lorentzzi.com\/fr\/3-methods-for-counting-using-safety-light-curtains-and-counters\/","title":{"rendered":"3 m\u00e9thodes de comptage \u00e0 l'aide de barri\u00e8res immat\u00e9rielles de s\u00e9curit\u00e9 et de compteurs"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"19793\" class=\"elementor elementor-19793\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d78a698 e-flex e-con-boxed e-con e-parent\" data-id=\"d78a698\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-eaf7bde elementor-widget elementor-widget-text-editor\" data-id=\"eaf7bde\" 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-weight: 400;\">Vous devez compter les v\u00e9hicules qui entrent et sortent d'un parking ou les marchandises qui passent sur des tapis roulants \u00e0 diff\u00e9rentes hauteurs dans une zone d\u00e9sign\u00e9e ?<\/span><\/p>\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-305af97 elementor-widget elementor-widget-image\" data-id=\"305af97\" 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 fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"512\" src=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Safety-light-curtains-are-used-to-count-the-number-of-trays-on-the-conveyor-belt.jpg\" class=\"attachment-large size-large wp-image-19789\" alt=\"Les barri\u00e8res immat\u00e9rielles de s\u00e9curit\u00e9 sont utilis\u00e9es pour compter le nombre de plateaux sur le convoyeur.\" srcset=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Safety-light-curtains-are-used-to-count-the-number-of-trays-on-the-conveyor-belt.jpg 1024w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Safety-light-curtains-are-used-to-count-the-number-of-trays-on-the-conveyor-belt-300x150.jpg 300w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Safety-light-curtains-are-used-to-count-the-number-of-trays-on-the-conveyor-belt-768x384.jpg 768w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Safety-light-curtains-are-used-to-count-the-number-of-trays-on-the-conveyor-belt-18x9.jpg 18w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Safety-light-curtains-are-used-to-count-the-number-of-trays-on-the-conveyor-belt-600x300.jpg 600w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Safety-light-curtains-are-used-to-count-the-number-of-trays-on-the-conveyor-belt-64x32.jpg 64w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\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-3b5b736 elementor-widget elementor-widget-text-editor\" data-id=\"3b5b736\" 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><a href=\"https:\/\/lorentzzi.com\/fr\/products\/proximity-sensor\/photoelectric-sensor\/through-beam-photoelectric-sensor-m12-thread\/\"><span style=\"font-weight: 400;\"><span style=\"color: #ff0000;\">D\u00e9tecteurs photo\u00e9lectriques point \u00e0 point \u00e0 faisceau traversant<\/span><\/span><\/a><span style=\"font-weight: 400;\"> sont une option courante, mais elles pr\u00e9sentent des limites notables dans les applications pratiques.\u00a0<\/span><\/p><p><span style=\"font-weight: 400;\">Cependant, les mod\u00e8les de v\u00e9hicules et les marchandises \u00e0 pointer pr\u00e9sentent des hauteurs diff\u00e9rentes, et un montage incorrect du capteur - trop bas ou trop haut - peut facilement entra\u00eener des inexactitudes dans le comptage.<\/span><\/p><p><span style=\"color: #ff0000;\"><a style=\"color: #ff0000;\" href=\"https:\/\/lorentzzi.com\/fr\/safety-light-curtain-sensor\/\"><span style=\"font-weight: 400;\">Barri\u00e8res immat\u00e9rielles de s\u00e9curit\u00e9<\/span><\/a><\/span><span style=\"font-weight: 400;\"> constituent donc une bien meilleure alternative. Ils permettent de d\u00e9tecter des objets dans une plage de hauteur fixe (par exemple, \u00e0 partir d'une hauteur de montage de 0,5 m\u00e8tre jusqu'\u00e0 leur distance de d\u00e9tection maximale). Cette couverture en hauteur augmente consid\u00e9rablement la pr\u00e9cision de la d\u00e9tection, garantissant une identification fiable des v\u00e9hicules de toutes tailles.<\/span><\/p><p><span style=\"font-weight: 400;\">Maintenant que vous savez que les barri\u00e8res immat\u00e9rielles de s\u00e9curit\u00e9 sont le meilleur choix, comment les utiliser pour compter le nombre total d'objets avec pr\u00e9cision ?<\/span><\/p><p><span style=\"font-weight: 400;\">Nous pr\u00e9sentons ci-dessous trois solutions rentables et cl\u00e9s en main pour cette application.<\/span><\/p>\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-4d2bad3 elementor-widget elementor-widget-heading\" data-id=\"4d2bad3\" 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\">M\u00e9thode 1 : Utilisation d'une barri\u00e8re immat\u00e9rielle de s\u00e9curit\u00e9 et d'un compteur cumulatif \u00e9lectromagn\u00e9tique<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-99b6223 elementor-widget elementor-widget-text-editor\" data-id=\"99b6223\" 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-weight: 400;\">Lorsqu'on utilise une barri\u00e8re immat\u00e9rielle de s\u00e9curit\u00e9 pour compter des objets, la premi\u00e8re solution qui vient \u00e0 l'esprit est de l'utiliser avec un <\/span><span style=\"color: #ff0000;\"><a style=\"color: #ff0000;\" href=\"https:\/\/lorentzzi.com\/fr\/categorie-produit\/timer-switch-and-counter\/pulse-counter\/\"><span style=\"font-weight: 400;\">compteur d'accumulateurs \u00e9lectrom\u00e9caniques<\/span><\/a><\/span><span style=\"font-weight: 400;\">, qui est la plus facile \u00e0 mettre en \u0153uvre.<\/span><\/p><p><span style=\"font-weight: 400;\">Lorsqu'un objet traverse la barri\u00e8re compos\u00e9e d'un \u00e9metteur et d'un r\u00e9cepteur de barri\u00e8res immat\u00e9rielles de s\u00e9curit\u00e9, il g\u00e9n\u00e8re une sortie de tension qui d\u00e9clenche le comptage d'une fois par le compteur d'accumulateurs.<\/span><\/p><p><span style=\"font-weight: 400;\">La sortie d'une barri\u00e8re immat\u00e9rielle de s\u00e9curit\u00e9 pouvant \u00eatre un transistor PNP, NPN ou un relais, le sch\u00e9ma de c\u00e2blage diff\u00e8re en fonction de la sortie.<\/span><\/p><p><span style=\"font-weight: 400;\">Dans la section suivante, je vous montrerai comment le c\u00e2bler correctement.<\/span><\/p>\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-20c78c3 elementor-widget elementor-widget-heading\" data-id=\"20c78c3\" 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<h3 class=\"elementor-heading-title elementor-size-default\">Comment c\u00e2bler ?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1a89cef elementor-widget elementor-widget-text-editor\" data-id=\"1a89cef\" 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-weight: 400;\">Pour les barri\u00e8res immat\u00e9rielles de s\u00e9curit\u00e9 utilisant <\/span><span style=\"color: #ff0000;\"><a style=\"color: #ff0000;\" href=\"https:\/\/lorentzzi.com\/fr\/pnp-vs-npn-proximity-sensors-key-differences-wiring-diagram-and-how-to-choose\/\"><span style=\"font-weight: 400;\">NPN ou PNP<\/span><\/a><\/span><span style=\"font-weight: 400;\"> vous pouvez les c\u00e2bler comme indiqu\u00e9 dans le diagramme ci-dessous :<\/span><\/p>\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-8d5b8d0 elementor-widget elementor-widget-image\" data-id=\"8d5b8d0\" 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=\"1024\" height=\"512\" src=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Lorentzzi-safety-light-curtain-and-electromagnetic-accumulator-wiring-diagram.jpg\" class=\"attachment-large size-large wp-image-19786\" alt=\"Sch\u00e9ma de c\u00e2blage du rideau lumineux de s\u00e9curit\u00e9 et de l&#039;accumulateur \u00e9lectromagn\u00e9tique Lorentzzi\" srcset=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Lorentzzi-safety-light-curtain-and-electromagnetic-accumulator-wiring-diagram.jpg 1024w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Lorentzzi-safety-light-curtain-and-electromagnetic-accumulator-wiring-diagram-300x150.jpg 300w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Lorentzzi-safety-light-curtain-and-electromagnetic-accumulator-wiring-diagram-768x384.jpg 768w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Lorentzzi-safety-light-curtain-and-electromagnetic-accumulator-wiring-diagram-18x9.jpg 18w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Lorentzzi-safety-light-curtain-and-electromagnetic-accumulator-wiring-diagram-600x300.jpg 600w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Lorentzzi-safety-light-curtain-and-electromagnetic-accumulator-wiring-diagram-64x32.jpg 64w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\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-867a89a elementor-widget elementor-widget-text-editor\" data-id=\"867a89a\" 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-weight: 400;\">Comme nos compteurs d'accumulateurs \u00e9lectrom\u00e9caniques n'ont pas de bornes positives et n\u00e9gatives, vous pouvez facilement les c\u00e2bler sans vous soucier d'inverser la connexion.<\/span><\/p>\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-cc4e9b1 elementor-widget elementor-widget-heading\" data-id=\"cc4e9b1\" 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<h3 class=\"elementor-heading-title elementor-size-default\">Avantages<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7c4dcea elementor-widget elementor-widget-text-editor\" data-id=\"7c4dcea\" 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<ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Le c\u00e2blage est simple et convient aux d\u00e9butants.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Aucune connaissance en programmation n'est requise ; le probl\u00e8me du comptage peut \u00eatre r\u00e9solu avec du simple mat\u00e9riel.<\/span><\/li><\/ul>\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-e037bc7 elementor-widget elementor-widget-heading\" data-id=\"e037bc7\" 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<h3 class=\"elementor-heading-title elementor-size-default\">Inconv\u00e9nients<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8848f29 elementor-widget elementor-widget-text-editor\" data-id=\"8848f29\" 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<ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Il ne peut \u00eatre utilis\u00e9 que pour compter le nombre total. Si vous souhaitez \u00e9mettre une alarme lorsqu'un nombre pr\u00e9d\u00e9fini est atteint, il y aura un probl\u00e8me.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Si vous souhaitez arr\u00eater la machine apr\u00e8s avoir atteint une valeur pr\u00e9d\u00e9finie, vous devez faire appel \u00e0 une personne sp\u00e9cialis\u00e9e pour obtenir les r\u00e9sultats du comptage, ce qui peut entra\u00eener un gaspillage de ressources humaines.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Lors du comptage des personnes dans les parkings ou sur les portes automatiques, des actions telles qu'une voiture qui fait marche arri\u00e8re en entrant ou une personne qui passe la porte puis revient peuvent \u00eatre compt\u00e9es, ce qui peut entra\u00eener des erreurs dans le comptage total.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Comme peu de compteurs cumulatifs sont dot\u00e9s de capacit\u00e9s de communication, la surveillance \u00e0 distance peut s'av\u00e9rer difficile.<\/span><\/li><\/ul>\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-b3be75d elementor-widget elementor-widget-heading\" data-id=\"b3be75d\" 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\">M\u00e9thode 2 : Utilisation d'une barri\u00e8re immat\u00e9rielle de s\u00e9curit\u00e9 et d'un compteur pr\u00e9d\u00e9fini\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2b51524 elementor-widget elementor-widget-text-editor\" data-id=\"2b51524\" 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-weight: 400;\">Cette m\u00e9thode utilise une barri\u00e8re immat\u00e9rielle de s\u00e9curit\u00e9 en conjonction avec un relais de comptage pr\u00e9r\u00e9gl\u00e9 (tel que notre <\/span><span style=\"color: #ff0000;\"><a style=\"color: #ff0000;\" href=\"https:\/\/lorentzzi.com\/fr\/products\/timer-switch-and-counter\/pulse-counter\/dh48j-110vac-220vac-preset-digital-counter-relay\/\"><span style=\"font-weight: 400;\">DH48J relais compteur pr\u00e9r\u00e9gl\u00e9<\/span><\/a><\/span><span style=\"font-weight: 400;\">). Son principal avantage est de permettre le comptage par lots et de fournir une alarme \u00e0 la fin du comptage.<\/span><\/p>\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-6ef4294 elementor-widget elementor-widget-heading\" data-id=\"6ef4294\" 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<h3 class=\"elementor-heading-title elementor-size-default\">Comment cela fonctionne-t-il ?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d153fda elementor-widget elementor-widget-text-editor\" data-id=\"d153fda\" 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-weight: 400;\">Lorsqu'un objet interrompt le faisceau lumineux entre l'\u00e9metteur et le r\u00e9cepteur de la barri\u00e8re immat\u00e9rielle de s\u00e9curit\u00e9, un signal de comptage est d\u00e9clench\u00e9. Le relais de comptage s'incr\u00e9mente jusqu'\u00e0 ce que la valeur pr\u00e9d\u00e9finie soit atteinte. Il \u00e9met alors un signal de commande (par exemple, pour activer une alarme). Ce cycle se r\u00e9initialise ensuite, ce qui permet un comptage efficace et r\u00e9p\u00e9t\u00e9 des lots.<\/span><\/p>\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-fdab3f5 elementor-widget elementor-widget-heading\" data-id=\"fdab3f5\" 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<h3 class=\"elementor-heading-title elementor-size-default\">Consid\u00e9rations relatives au c\u00e2blage :<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-36ac774 elementor-widget elementor-widget-text-editor\" data-id=\"36ac774\" 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-weight: 400;\">Nos relais de comptage prennent en charge diff\u00e9rents types d'entr\u00e9e (PNP, NPN ou relais). Il est essentiel de s'assurer de la compatibilit\u00e9 entre le circuit d'entr\u00e9e du relais de comptage et le type de signal de sortie de la barri\u00e8re immat\u00e9rielle de s\u00e9curit\u00e9 avant de proc\u00e9der au raccordement. Se r\u00e9f\u00e9rer au sch\u00e9ma de c\u00e2blage suivant :<\/span><\/p>\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-eb32ba9 elementor-widget elementor-widget-image\" data-id=\"eb32ba9\" 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=\"1024\" height=\"512\" src=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Lorentzzi-safety-light-curtain-and-preset-counter-wiring-diagram.jpg\" class=\"attachment-large size-large wp-image-19787\" alt=\"Sch\u00e9ma de c\u00e2blage du rideau lumineux de s\u00e9curit\u00e9 et du compteur de pr\u00e9s\u00e9lection Lorentzzi\" srcset=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Lorentzzi-safety-light-curtain-and-preset-counter-wiring-diagram.jpg 1024w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Lorentzzi-safety-light-curtain-and-preset-counter-wiring-diagram-300x150.jpg 300w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Lorentzzi-safety-light-curtain-and-preset-counter-wiring-diagram-768x384.jpg 768w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Lorentzzi-safety-light-curtain-and-preset-counter-wiring-diagram-18x9.jpg 18w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Lorentzzi-safety-light-curtain-and-preset-counter-wiring-diagram-600x300.jpg 600w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Lorentzzi-safety-light-curtain-and-preset-counter-wiring-diagram-64x32.jpg 64w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\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-5769d92 elementor-widget elementor-widget-heading\" data-id=\"5769d92\" 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<h3 class=\"elementor-heading-title elementor-size-default\">Avantages :<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-74b212f elementor-widget elementor-widget-text-editor\" data-id=\"74b212f\" 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<ul><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Comptage de lots<\/b><span style=\"font-weight: 400;\">: Id\u00e9al pour les processus par lots. Le relais de comptage peut \u00eatre utilis\u00e9 ind\u00e9pendamment ou avec des compteurs suppl\u00e9mentaires \u00e0 cet effet.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Sortie d'alarme<\/b><span style=\"font-weight: 400;\">: Lorsque le nombre de pi\u00e8ces atteint le seuil fix\u00e9, la sortie du relais peut directement d\u00e9clencher une alarme ou un indicateur, ce qui permet de conna\u00eetre clairement l'\u00e9tat d'avancement du projet.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b style=\"font-style: inherit;\">Int\u00e9gration des contr\u00f4les<\/b><span style=\"font-weight: 400;\">: Le signal de sortie peut \u00eatre utilis\u00e9 pour contr\u00f4ler d'autres dispositifs (par exemple, arr\u00eater un moteur), ce qui facilite les s\u00e9quences de contr\u00f4le automatis\u00e9es.<\/span><\/li><\/ul>\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-221049a elementor-widget elementor-widget-heading\" data-id=\"221049a\" 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<h3 class=\"elementor-heading-title elementor-size-default\">Inconv\u00e9nients :<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2a795f2 elementor-widget elementor-widget-text-editor\" data-id=\"2a795f2\" 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<ul><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Susceptible de faire l'objet d'un double comptage<\/b><span style=\"font-weight: 400;\">: Si le m\u00eame objet entre et sort \u00e0 plusieurs reprises de la zone de d\u00e9tection, il sera compt\u00e9 plusieurs fois.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Flexibilit\u00e9 limit\u00e9e<\/b><span style=\"font-weight: 400;\">: Le syst\u00e8me n'est pas programmable, ce qui limite sa capacit\u00e9 \u00e0 ex\u00e9cuter une logique conditionnelle complexe.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b style=\"font-style: inherit;\">Manque de connectivit\u00e9<\/b><span style=\"font-weight: 400;\">: Sans capacit\u00e9s de communication (par exemple, port RS485), la surveillance \u00e0 distance et l'int\u00e9gration des donn\u00e9es ne sont pas possibles.<\/span><\/li><\/ul>\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-6291e5a elementor-widget elementor-widget-heading\" data-id=\"6291e5a\" 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\">M\u00e9thode 3 : Utilisation d'une barri\u00e8re immat\u00e9rielle de s\u00e9curit\u00e9, d'un automate et d'une IHM<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5354369 elementor-widget elementor-widget-text-editor\" data-id=\"5354369\" 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-weight: 400;\">La connexion d'une barri\u00e8re immat\u00e9rielle de s\u00e9curit\u00e9 \u00e0 un automate est non seulement la meilleure solution pour le comptage d'objets, mais elle peut \u00e9galement prendre en charge des t\u00e2ches plus complexes.<\/span><\/p><p><span style=\"font-weight: 400;\">En combinant ces deux produits et en programmant le PLC en cons\u00e9quence, nous pouvons \u00e9viter les erreurs de comptage qui se produisent dans les m\u00e9thodes 1 et 2.<\/span><\/p><p><span style=\"font-weight: 400;\">Examinons maintenant de plus pr\u00e8s son principe de fonctionnement, ses m\u00e9thodes de c\u00e2blage, ses avantages et ses inconv\u00e9nients.<\/span><\/p>\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-66e5a0f elementor-widget elementor-widget-heading\" data-id=\"66e5a0f\" 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<h3 class=\"elementor-heading-title elementor-size-default\">Comment cela fonctionne-t-il ?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-439e740 elementor-widget elementor-widget-text-editor\" data-id=\"439e740\" 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-weight: 400;\">Dans cette m\u00e9thode de comptage, lorsqu'un objet bloque le faisceau lumineux de la barri\u00e8re immat\u00e9rielle de s\u00e9curit\u00e9, celle-ci envoie un signal d'impulsion de 24 VCC ou 12 VCC \u00e0 un point d'entr\u00e9e d\u00e9sign\u00e9 sur l'automate programmable.<\/span><\/p><p><span style=\"font-weight: 400;\">Le programme de contr\u00f4le PLC \u00e9crit par l'utilisateur analyse en permanence ce signal d'entr\u00e9e.<\/span><\/p><p><span style=\"font-weight: 400;\">Chaque fois qu'un signal valide est d\u00e9tect\u00e9, le registre du compteur s'incr\u00e9mente et le r\u00e9sultat du comptage est affich\u00e9 sur l'interface homme-machine (IHM) via Ethernet.<\/span><\/p><p><span style=\"font-weight: 400;\">En outre, une logique plus avanc\u00e9e peut \u00eatre mise en \u0153uvre, telle que le d\u00e9clenchement d'une alarme pour faire retentir une sonnerie.<\/span><\/p>\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-25dbfe1 elementor-widget elementor-widget-heading\" data-id=\"25dbfe1\" 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<h3 class=\"elementor-heading-title elementor-size-default\">Comment relier les deux produits ?<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3101d14 elementor-widget elementor-widget-text-editor\" data-id=\"3101d14\" 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-weight: 400;\">Le sch\u00e9ma de c\u00e2blage ci-dessous vous montre comment connecter diff\u00e9rentes barri\u00e8res immat\u00e9rielles de s\u00e9curit\u00e9 \u00e0 un automate Siemens S7-200 SMART.<\/span><\/p>\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-946a056 elementor-widget elementor-widget-image\" data-id=\"946a056\" 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 loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"512\" src=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Lorentzzi-safety-light-curtain-siemense-PLC-and-HMI-wiring-diagram.jpg\" class=\"attachment-large size-large wp-image-19788\" alt=\"Barri\u00e8re immat\u00e9rielle de s\u00e9curit\u00e9 Lorentzzi, sch\u00e9ma de c\u00e2blage Siemense PLC et HMI\" srcset=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Lorentzzi-safety-light-curtain-siemense-PLC-and-HMI-wiring-diagram.jpg 1024w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Lorentzzi-safety-light-curtain-siemense-PLC-and-HMI-wiring-diagram-300x150.jpg 300w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Lorentzzi-safety-light-curtain-siemense-PLC-and-HMI-wiring-diagram-768x384.jpg 768w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Lorentzzi-safety-light-curtain-siemense-PLC-and-HMI-wiring-diagram-18x9.jpg 18w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Lorentzzi-safety-light-curtain-siemense-PLC-and-HMI-wiring-diagram-600x300.jpg 600w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/Lorentzzi-safety-light-curtain-siemense-PLC-and-HMI-wiring-diagram-64x32.jpg 64w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\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-a7645fe elementor-widget elementor-widget-heading\" data-id=\"a7645fe\" 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<h3 class=\"elementor-heading-title elementor-size-default\">Avantages<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6b4d645 elementor-widget elementor-widget-text-editor\" data-id=\"6b4d645\" 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<ul><li><b>Grande flexibilit\u00e9 et intelligence<\/b><span style=\"font-weight: 400;\">: La nature programmable des automates leur permet de mettre en \u0153uvre une logique de comptage complexe et de s'int\u00e9grer de mani\u00e8re transparente \u00e0 d'autres processus tels que le tri, l'emballage ou l'enregistrement des donn\u00e9es.<\/span><\/li><li aria-level=\"1\"><b>Anti-double comptage<\/b><span style=\"font-weight: 400;\">: L'utilisation d'un capteur photo\u00e9lectrique suppl\u00e9mentaire permet d'\u00e9viter le double comptage. Par exemple, dans l'exemple ci-dessous, si la s\u00e9quence du signal de sortie de l'objet d\u00e9tect\u00e9 est 1-&gt;2-&gt;3, il ne sera compt\u00e9 qu'une seule fois ; si la s\u00e9quence est diff\u00e9rente, l'automate ne comptera pas.<\/span><\/li><\/ul>\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-5540c4c elementor-widget elementor-widget-image\" data-id=\"5540c4c\" 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 loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"512\" src=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/The-tray-passes-through-the-safety-light-curtain-on-the-conveyor-belt.jpg\" class=\"attachment-large size-large wp-image-19810\" alt=\"Le plateau passe \u00e0 travers le rideau lumineux de s\u00e9curit\u00e9 sur le convoyeur.\" srcset=\"https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/The-tray-passes-through-the-safety-light-curtain-on-the-conveyor-belt.jpg 1024w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/The-tray-passes-through-the-safety-light-curtain-on-the-conveyor-belt-300x150.jpg 300w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/The-tray-passes-through-the-safety-light-curtain-on-the-conveyor-belt-768x384.jpg 768w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/The-tray-passes-through-the-safety-light-curtain-on-the-conveyor-belt-18x9.jpg 18w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/The-tray-passes-through-the-safety-light-curtain-on-the-conveyor-belt-600x300.jpg 600w, https:\/\/lorentzzi.com\/wp-content\/uploads\/2026\/01\/The-tray-passes-through-the-safety-light-curtain-on-the-conveyor-belt-64x32.jpg 64w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\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-31f74c6 elementor-widget elementor-widget-text-editor\" data-id=\"31f74c6\" 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<ul><li><b style=\"font-style: inherit;\">De puissantes capacit\u00e9s de communication<\/b><span style=\"font-weight: 400;\">: La plupart des automates prennent en charge les protocoles de communication industrielle (Ethernet\/IP, Profinet, Modbus, etc.), ce qui permet une surveillance \u00e0 distance en temps r\u00e9el et la fourniture de donn\u00e9es aux syst\u00e8mes IHM ou SCADA\/MES.<\/span><\/li><\/ul>\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-68be226 elementor-widget elementor-widget-heading\" data-id=\"68be226\" 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<h3 class=\"elementor-heading-title elementor-size-default\">Inconv\u00e9nients<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-503b627 elementor-widget elementor-widget-text-editor\" data-id=\"503b627\" 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<ul><li aria-level=\"1\"><b>Co\u00fbt \u00e9lev\u00e9<\/b><span style=\"font-weight: 400;\">: Tous ces composants peuvent \u00eatre trouv\u00e9s sur Amazon, et les calculs montrent que le prix de ces composants sera proche de $1,000 (barri\u00e8re immat\u00e9rielle de s\u00e9curit\u00e9 de 1 000 mm : $499.00(Si achet\u00e9 chez nous, il est seulement d'environ $260.0), Siemens PLC : $220.00, deux paires de capteurs photo\u00e9lectriques \u00e0 faisceau traversant : $100.00), alors que les deux premi\u00e8res m\u00e9thodes co\u00fbtent moins de $100 (si elles sont achet\u00e9es chez nous), cette solution est donc plus co\u00fbteuse.<\/span><\/li><li aria-level=\"1\"><b style=\"font-style: inherit;\">Des comp\u00e9tences en programmation sont requises<\/b><span style=\"font-weight: 400;\">: Si vous ne connaissez pas les langages de programmation des automates, il vous sera difficile de les utiliser correctement et vous passerez beaucoup de temps \u00e0 les apprendre.<\/span><\/li><\/ul>\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-43f3779 elementor-widget elementor-widget-heading\" data-id=\"43f3779\" 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\">Conclusion<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-befc7a8 elementor-widget elementor-widget-text-editor\" data-id=\"befc7a8\" 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-weight: 400;\">En r\u00e9sum\u00e9, trois m\u00e9thodes pratiques sont disponibles pour le comptage d'objets avec les barri\u00e8res immat\u00e9rielles de s\u00e9curit\u00e9 : le couplage avec un compteur cumulatif, un compteur pr\u00e9r\u00e9gl\u00e9 et une combinaison PLC + HMI.<\/span><\/p><p><span style=\"font-weight: 400;\">Si vous recherchez des barri\u00e8res lumineuses de s\u00e9curit\u00e9, des compteurs cumulatifs et des relais de comptage pr\u00e9r\u00e9gl\u00e9s fiables, de haute qualit\u00e9 et \u00e0 des prix raisonnables, <\/span><span style=\"color: #ff0000;\"><a style=\"color: #ff0000;\" href=\"https:\/\/lorentzzi.com\/fr\/\"><span style=\"font-weight: 400;\">Lorentzzi Electric<\/span><\/a><\/span><span style=\"font-weight: 400;\"> peut fournir ces produits. Vous pouvez nous contacter en envoyant un courriel \u00e0 l'adresse suivante <\/span><span style=\"color: #ff0000;\"><a style=\"color: #ff0000;\" href=\"mailto:shonxu@lorentzzi.com\"><span style=\"font-weight: 400;\">shonxu@lorentzzi.com<\/span><\/a><\/span><span style=\"font-weight: 400;\">.<\/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\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Do you need to count vehicles entering and exiting a parking lot, or tally goods passing through conveyor belts at varying heights in a designated area? Point-to-point through-beam photoelectric sensors are a common option, yet they pose notable limitations in practical applications.\u00a0 But, vehicle models and tally goods feature different heights, and improper sensor mounting\u2014either [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":19790,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[110],"tags":[],"class_list":["post-19793","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sensor"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.0 (Yoast SEO v26.9) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>3 Methods for Counting Using Safety Light Curtains and Counters<\/title>\n<meta name=\"description\" content=\"In this blog post, we will provide you 3 methods for counting using safety light curtains and counters, click to learn now!\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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