Field device incorporating circuit card assembly as...

H - Electricity – 05 – K

Patent

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H05K 1/02 (2006.01)

Patent

CA 2579818

A field hardened industrial device (200) is described with a housing (208) of the device having electrically conductive walls surrounding a cavity (206) with an open end. An electronics assembly (292) is adapted to fit within the cavity. The device includes a circuit card assembly (270), which is a multi- layered printed wiring board with pass-through electrical connections and an embedded ground plane (350) electrically coupled to the housing (202) to shield the electronics assembly (292) from electromagnetic interference and to provide environmental protection to the electronics assembly.

La présente invention se rapporte à un dispositif industriel durci de terrain (200), qui comporte un logement (208) possédant des parois conductrices environnant une cavité (206) dotée d'une extrémité ouverte. Un ensemble électronique (292) est adapté pour se loger dans la cavité. Le dispositif selon l'invention comprend un ensemble carte à circuits (270), qui se présente sous la forme d'un tableau de connexions imprimé multicouche présentant des connexions électriques traversantes et un retour de masse incorporé (350) qui est couplé par voie électrique au logement (202) de façon à blinder l'ensemble électronique (292) contre le brouillage électromagnétique et d'assurer sa protection contre l'environnement.

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