Greenhouse Automation with industrial PLC based on Arduino

Our costumer was looking for an Open Source solution in order to implement all the technical specifications he wants with unlimited options, which can not be done with a turnkey solution.

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2. C A S E S T U D Y F I N A L S O L U T I O N ( H A R D W A R E ) I n o r d e r t o c o n t r o l t h e e n t i r e i n s t a l l a t i o n , W i l l i a m h a s r e q u i r e d t w o E t h e r n e t P L C s . O n t h e o n e h a n d , t h e P L C s r e c e i v e d t h e d a t a f r o m t h e H V A C s e n s o r s , a t t h e f i r s t c h o i c e , c o n n e c t e d b y a n I 2 C b u s , I 2 C m u l t i p l e x e r s h a v e a l s o b e e n a d d e d t o c o v e r t h e e n t i r e i n s t a l l a t i o n , a t s e c o n d a n d t h i r d c h o i c e , t h e i n s t a l l a t i o n a l s o c o m b i n e s d i g i t a l a n d a n a l o g s e n s o r s . W i l l i a m h a s i m p l e m e n t e d a c o n t r o l s y s t e m f o r e a c h o f t h e p h a s e s ( h u m i d i t y , t e m p e r a t u r e , l e v e l o f C o 2 a n d l u m i n o s i t y ) w h e r e l o o k i n g a t t h e l e v e l o f e a c h v a r i a b l e f r o m t h e s e n s o r s d e c i d e d o n t h e a c t u a t o r s ( p u m p s , v a l v e s , v e n t i l a t i o n , l i g h t ) i n a s k e t c h m a d e w i t h A r d u i n o I D E ( O p e n S o u r c e ) . T o h a v e c o n t r o l o v e r t h e s i t u a t i o n i n t h e g r e e n h o u s e , W i l l i a m a d d e d a P a n e l P C f r o m I n d u s t r i a l S h i e l d s t o t h e s y s t e m . T h e d a t a o f t h e t w o E t h e r n e t P L C s a r e s e n t v i a E t h e r n e t t o t h e P a n e l P C . I n t h e P a n e l P C , a n M Q T T b r o k e r h a s b e e n c o n f i g u r e d t o h a n d l e t h e r e q u e s t s a n d t h e N o d e - r e d p r o g r a m m i n g t o o l h a s b e e n   u s e d t o c r e a t e t h e f r a m e w o r k a n d m a n a g e t h e c o m m u n i c a t i o n s b e t w e e n t h e E t h e r n e t P L C s a n d t h e P a n e l P C . F a b r i c a d e l P o n t 1 - 1 1 · ( R e c i n t e i n d u s t r i a l d e l P o n t V e l l ) · 0 8 2 7 2 , S a n t F r u i t ó s d e B a g e s ( B a r c e l o n a ) · S p a i n i n f o @ i n d u s t r i a l s h i e l d s . c o m • w w w . i n d u s t r i a l s h i e l d s . c o m

1. S U C C E S S S T O R Y I N D U S T R I A L S H I E L D S G R E E N H O U S E A U T O M A T I O N O u r c o s t u m e r W i l l i a m K i m c h o u w a s l o o k i n g f o r a n O p e n S o u r c e s o l u t i o n i n o r d e r t o i m p l e m e n t a l l t h e t e c h n i c a l s p e c i f i c a t i o n s h e w a n t s w i t h u n l i m i t e d o p t i o n s , w h i c h c a n n o t b e d o n e w i t h a t u r n k e y s o l u t i o n . W i l l i a m d e c i d e d t o u s e t h e I n d u s t r i a l S h i e l d s e q u i p m e n t s a m o n g o t h e r r e a s o n s f o r t h e s a v i n g i n e x p e n s e s , t h e e a s e o f w i r i n g w i t h s c r e w l e s s c o n n e c t o r o r e a s y t o p r o g r a m i n s e v e r a l l a n g u a g e s s u c h a s A r d u i n o I D E . S U M M A R Y T h i s p r o j e c t a l l o w s t o c o n t r o l r e m o t e l y t h e h u m i d i t y , t h e v e n t i l a t i o n , t h e C o 2 l e v e l a n d t h e l u m i n o s i t y i n a g r e e n h o u s e . I t i s c o n f i g u r e d w i t h a g r a p h i c a l i n t e r f a c e p r o g r a m m e d i n a I n d u s t r i a l S h i e l d s P a n e l P C w i t h a R a s p b e r r y P i b u i l t - i n . W h i l e t h e c o n t r o l o f h u m i d i t y , C o 2 a n d a i r i s a u t o m a t i c , f o r L i g h t s a r e c o n t r o l l e d a c c o r d i n g t o t h e t i m e , a l t h o u g h t h e y c a n b e s e t m a n u a l l y . O B J E C T I V E T h e g r e e n h o u s e t h a t W i l l i a m w a n t e d t o a u t o m a i z e r e q u i r e d a r e m o t e c o n t r o l o n t h e h u m i d i t y l e v e l s , C o 2 , t e m p e r a t u r e a n d l i g h t i n g o f t h e d i f f e r e n t r o o m s t h a t m a k e u p t h e g r e e n h o u s e a n d a s y s t e m t h a t w o u l d a l e r t h i m i n c a s e o f f i n d i n g a n y o f t h e v a r i a b l e s o u t o f r a n g e . T o a c h i e v e t h i s g o a l , W i l l i a m c h o s e t o u s e d i f f e r e n t c o m m u n i c a t i o n p r o t o c o l s s u c h a s I 2 C , E t h e r n e t a m o n g o t h e r s a n d a l s o   p r o g r a m m i n g t o o l s s u c h a s A r d u i n o I D E o r N o d e - r e d .

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