Electronic method and system for detection of conducting or...

Details Electronic method and system for detection of conducting or... Electronic method and system for detection of conducting or...

G - Physics

01

N

G01N 27/22 (2006.01) G01F 23/26 (2006.01) G01R 27/26 (2006.01)

Patent

CA 2515162

The method of detecting the presence of a conducting or dielectric environment with dielectric constant higher than that of air, of this invention, consists in counting the number of control signals (No), resulting from the relationship No = f(Qp, Qod, Ucc, Up, T), sent from the control system (US) as necessary to charge the capacitor (Cp) and then to discharge the previously- charged capacitor (Cp) to a threshold voltage (Up) preset by the control system (US), with the subsequent counting of the number of control signals (Nx), resulting from the relationship Nx = f(Qp, Qx, Ucc, Up, T), sent from said control system (US) as necessary to charge the capacitor (Cx), and then the previously-charged capacitor (Cp) is discharged to said threshold voltage (Up) preset by said control system (US) and the quantities of determined control signals (Nx) are compared with the reference state and the obtained difference in those signals indicates the presence of a conductive or dielectric environment in the immediate environment of the capacitor (Cx).

Le procédé de détection de présence d'un environnement conducteur ou diélectrique avec une constante diélectrique supérieure à celle de l'air de cette invention consiste à compter le nombre de signaux de commande (<u>No</u>), résultant de la relation No = f(Qp, Qod, Ucc, Up, T), envoyés du système de commande (<u>US</u>) comme il se doit pour charger la capacité (Cp) et ensuite pour décharger la capacité (Cp) préalablement chargée à un seuil de tension (Up) préfixé par le système de commande (<u>US</u>), puis à compter ensuite le nombre de signaux de commande (<u>Nx</u>), résultant de la relation Nx = f(Qp, Qx, Ucc, Up, T), envoyés du système de commande (<u>US</u>) comme il se doit pour charger la capacité (Cx) et ensuite la capacité (Cp) préalablement chargée est déchargée à un seuil de tension (Up) préfixé par le système de commande (<u>US</u>) et, les quantités de signaux de commande déterminées (<u>Nx</u>) sont comparées à l'état de référence et la différence obtenue dans ces signaux indique la présence d'un environnement conducteur ou diélectrique dans l'environnement immédiat de cette capacité (Cx).

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