domotic active light controller

7/23/2019 Domotic active light controller

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Mencarelli Simone

V B Elettronica e telecomunicazioni

Esame di stato 2014

PRESENTAZINE !E" PR#ETT

DRIVER DI POTENZA PER LA REGOLAZIONE DELLE LU

IN UN IMPIANTO DI DOMOTICA


3/21

INTRODUZIONE


4/21

Robert

The men who changed history:


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6/21

Bosch cproduceinnovatcars. 3n

biggestinnovatcontrol electronsystems

car is th

An Invention of Robert Bosch Gmb


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8/21

All

!uring this year we haveproduced a 4A6 bus domotic $93e/pander. 5he circuit is made toac:uire and to distribute digitaland analog datas all along the

line from dierent pointsconnected to the 4A6 bus.


9/21

The projectActive light controller


10/21

5he aim of this pro;ect is to control houthe domotics 4an bus $93 e/pander.


11/21

How it works

Analoginputx4

Line phasedsaw toothgenerator

Filteringandattenuation

,=> >3!


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The in!ut is com!osed of four voltage dividers #ith lo#$!ass filt

Analog input

The %a!lace trans

this circuit can e

R'(

)*s+ , $$$$$$$$$$$$ - $$$

R(.R'(

(

so& 0 (

)*s+ , $$$$ - $$$$$$$$$$

11 (.(235

(

6t , $$$$$$$$$$$$$$$$$$$$$

7-:-(235E*$1+


13/21

;AIN AND UEN/? RE=


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4ircuit and waveforms oline phased generator

5he voltage of line signal is reducand transformed in a double halfbridge.=hen the obtained signal reachtransistor & passes to interdicticurrent to pass through the basthat discharges the capacitor 4&voltage of the double half-wave the transistor & is in saturatiointerdicted and the current comthe capacitor generating a small a


15/21

4ircuit and waveforms oline phased generator

5he voltage of line signal is reducand transformed in a double halfbridge.=hen the obtained signal reachtransistor & passes to interdicticurrent to pass through the basthat discharges the capacitor 4&voltage of the double half-wave the transistor & is in saturatiointerdicted and the current comthe capacitor generating a small a


16/21

-5he ,=> is a modulation techni:ue that the width )or duty cycle* of an impulsivewave signal.-5he width of the modulated signal is proto the voltage of the input signal.

-$t is often used in power controls )to cospeed of a motor*" in class ! ampliers )toutput of smartphones* and in switchinpacks.

-,=> is used because all transistors w

ulse !idth "odulation


17/21

!" generator

5he ,=> generator is made using C operational am

comparators )integrated circuit 5?1'C*.5he sawtooth signal is compared with the signal incothe input circuit. 5he result of the comparison is the ,=

mathematical model reali9ed

using ;eogera

IN


18/21

5he output circuit for lamp control is reali#optocouplers )to avoid the possibility of shwith 001v current* and C triacs.

#amp $ontrol


19/21

5he 5%$A4 )5%$ode for Alternating 4electronic component used to control t$f a certain voltage is applied to his bais triggered and it starts conducbetween A& and A0. $t stops conduct

voltage applied to A& and A0 is e:ual t

5he circuit give a trigger signal on thon the negative half-wave of the line vspecic time that can be regulated duty cycle of the ,=> wave that de

amplitude of the input signal.

Triac


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5he %oot >ean D:voltage value that ppower dissipation on aload of the waveformcircuit it is directly p

intensity of the light.

5his model calculatedimmered sin wave.

5he slider +: relationship between

5%$A4 is +o and ththe sin wave )&9E1 s*

Toff 'i

C , $$$$$$ , $$$$$$$$

T 'imax

5he green curve relationship betwee

)@i9@ima/ * and the %

mathematical model reali9ed

using ;eogera


21/21

Mencarelli Simone 5BE

not yet 5H6!

domotic active light controller

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