A detector for detecting a buried current carrying conductor

Details A detector for detecting a buried current carrying conductor A detector for detecting a buried current carrying conductor

G - Physics

01

V

G01V 3/08 (2006.01)

Patent

CA 2612876

A detector (1) for detecting a buried current carrying conductor comprises a digital signal processor (16) and a power supply unit (25). The power supply unit (25) is a switched mode power supply which incorporates a proportional integral differential controller feedback algorithm (33) and which is managed by the digital signal processor (16). The load (31) and source (26) voltage are monitored by the digital signal processor (16) and a look-up table (35) is used to control a pulse width modulator (27), which drives a single ended primary induction controller (29). The self-generated noise of the power supply unit (25) does not interfere with the frequency bands of detection of the detector (1).

L'invention concerne un détecteur (1) qui permet de détecter un conducteur enfoui et qui comprend un processeur de signaux (16) et une unité d'alimentation (25). L'unité d'alimentation (25) fonctionne en mode commuté, comprend un algorithme de rétroaction du contrôleur différentiel intégral et proportionnel (33) et est géré par le processeur de signaux numériques (16). Les tensions de la charge (31) et la de source (26) sont surveillées par le processeur de signaux numériques (16) et une table de consultation (35) est utilisée pour contrôler un modulateur d'impulsions en largeur (27), qui commande un contrôleur local d'induction primaire (29). Le bruit autogénéré de l'unité d'alimentation (25) n'interfère pas avec les bandes de fréquence de détection du détecteur (1).

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