<div dir="ltr"><div><div>Hello Gilou,<br><br>J'ajoute toute la liste, car je pense que ça peut intéresser d'autres personnes et comme ça si je dis des conneries, ça permettra d'être corrigé !!! ;-), donc n'hésiter pas le débat est ouvert.<br>
</div><br>Afin de pouvoir calculer la résistance et la puissance du Shunt + des ponts diviseurs, il faut qu'on connaisse la tension du réseau sur lequel tu vas faire la mesure ainsi que la tension de ton entrée ADC.<br>
</div>Il n'est pas très simple de te l'expliquer par mail, car il faut que je fasse quelques schémas, mais je vais tout de même essayer:<br><br><img src="data:image/png;base64,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" alt=""><br>
<div>Le principe, c'est que tu mesures les 2 tensions et en faisant V2-V1, puis tu applique le gain inverse du pont diviseur et tu trouves la tension aux bornes du shunt et comme tu connais précisément la résistance du shunt tu en calcules le courant I = Ushunt/Rshunt.<br>
</div><div><br>Pour ce qui est des Ponts diviseurs, la formule c'est:<br></div><div>  V1 = R2 / (R1 + R2) x  Vin<br></div><div>Et le Gain c'est:<br></div><div>   G  = V1 / Vin<br></div><div><br></div><div>Je ne suis tout de même pas un expert en électronic mais je sais qui faut prendre en compte la puissance dissipée par les résistances afin de ne pas les cramer. (P = U x I )<br>
</div><div>Et je ne sais pas de quel ordre de grandeur doivent être les résistances.<br></div><div>Titi peut certainement nous donner quelques conseils supplémentaires ?<br></div><div><br><br></div><div>Ça t'aide un peu dans tes recherches ?<br>
</div><div>N'hésite pas si tu as d'autres questions.<br><br></div><div>Amuse toi bien,<br></div><div>A très vite<br></div><div>Adrien<br></div><div class="gmail_extra"><br><br><div class="gmail_quote">Le 7 octobre 2013 18:36, Gilles Longuet <span dir="ltr"><<a href="mailto:gilou@tieole.com" target="_blank">gilou@tieole.com</a>></span> a écrit :<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><div><div><div>Bonjour,<br><br></div>lorsque nous avions discuté au Load tu m'avais parlé de système de mesures assez simple pour le courant et la tension.<br>
<br></div>j'avance un peu avec mon système de monitoring et je voudrais faire des tests pour la mesure de puissance de l'éolienne.<br>
<br></div>Je crois que pour le courant tu avais évoqué le shunt, plus précis, mais lorsque je regarde sur le net je ne sais pas trop vers quel type me tourner. Le but dans un premier temps est de mesurer des courant pouvant atteindre 30A et j'ai l'impression qu'il faut donc un énorme shunt pour cela. Connais tu un autre type?<br>

<br>et pour la tension tu avais parlé de pont diviseur. Un banal pont réduisant la tension entre 0 et 5V m'assure t'il un bon fonctionnement avec l'arduino?<br><br></div>merci de tes réponses <br clear="all">
<span class="HOEnZb"><font color="#888888"><div>
<div><div><div><div><br>-- <br>gilou<br><div><br>
Ti'eole - énergies éoliennes<br>
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</div></div></div></div></div></font></span></div>
</blockquote></div><br></div></div>