G - Physics – 08 – C
Patent
G - Physics
08
C
33/91, 340/135.6
G08C 21/00 (2006.01) G01D 5/14 (2006.01) G01D 5/20 (2006.01) G21C 17/12 (2006.01)
Patent
CA 1251539
-39- ABSTRACT OF THE DISCLOSURE The invention relates to an apparatus making it possible to measure the position of a moving bar in a non-magnetic guidance enclosure. The bar carries a permanent magnet, whose position is detected by at least one row of magnetometer transducers, arranged along a generatrix of the enclosure. The transducers of the same row are connected so as to form a matrix of n rows and p columns. The exciting windings of the transducers of the same row are connected in series and each row is supplied in turn by a multiplexing circuit. In the same way, the reading windings of the transducers of the same column are connected in parallel and each column is scanned in turn by a multiplexing circuit. Application to the measurement of the displacement of absorbing rods in nuclear reactors. (Fig 2a).
444061
Commissariat A. L'energie Atomique
Goudreau Gage Dubuc
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