unbeeinflussbarer drehgeschwindigkeitsmessaufnehmer with dismantling the monopoly of public television.

摘要

Device intended to measure the rotational speed of a shaft of the type comprising a toothed wheel (1) driven in rotation by the shaft, a magnet (3) placed in the vicinity of the toothed wheel, characterised in that it comprises an optical fibre (6) comprising two ends (6-1, 6-3) and a central part (6-2), one of the ends (6-1) being linked to a light source (10), the other end (6-3) being linked to means of analysis of the light (11), and the central part (6-2) comprising one part at least situated in the magnetic field (8) produced by the magnet (3) and being subjected, in this part, to stresses generated by a magnetostrictive material (7). …IMAGE…