Superconducting gravity gradiometer and heat switch

H - Electricity – 05 – B

Patent

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Details

H05B 1/02 (2006.01) G01V 7/00 (2006.01) G01V 7/08 (2006.01) G01V 7/16 (2006.01) H05B 3/14 (2006.01) H01B 12/00 (2006.01)

Patent

CA 2612990

A heat switch 570 is disclosed as well an a gradiometer having the heat switch. The heat switch is formed from a non-magnetic material such as a semi-conducting material. The semi-conducting material may be provided by way of a Hall effect device. The heat switches are arranged in the gradiometer on a circuit board 856. The circuit board 850 has conducting strips 856 which are connected to conducting strips on a sensor 71 by bridges 852. The heat switch 570 is connected on the opposite side of the circuit board 850 to the strips 856 and processing circuitry 859. A copper substrate 865 is provided on the same side of the circuit board as the heat switch 570 to conduct heat away from the heat switch 570 when the heat switch is closed.

L'invention concerne un commutateur de chaleur (570) ainsi qu'un gradiomètre comportant le commutateur de chaleur. Le commutateur de chaleur est formé à partir d'un matériau non magnétique tel qu'un matériau semi-conducteur. Le matériau semi-conducteur peut être utilisé comme dispositif à effet de Hall. Les commutateurs de chaleur sont disposés dans le gradiomètre sur une carte de circuit imprimé (856). La carte de circuit imprimé (850) comporte des bandes conductrices (856) qui sont reliées à des bandes conductrices présentes sur un capteur (71) par des ponts (852). Le commutateur de chaleur (570) est raccordé sur le côté opposé de la carte de circuit imprimé (850) aux bandes (856) et à des circuits de traitement (859). Un substrat en cuivre (865) est disposé sur le même côté de la carte de circuit imprimé que le commutateur de chaleur (570) pour évacuer la chaleur du commutateur de chaleur (570) lorsque ce dernier est fermé.

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