LINEAR DISPLACEMENT CONVERTER Russian patent published in 2002 - IPC

FIELD: automatics, devices converting mechanical vibrations to digital code. SUBSTANCE: proposed converter gas acoustic line made of magnetostrictive material with dampers on ends. Recording winding is uniformly distributed over entire length of acoustic line. Mobile permanent magnet is fixed on controlled object. Acoustic line also carries reading winding with immobile permanent magnet. Binary counter counts number of pulses of quartz oscillator during time between emergence of recording and reading pulses. Circuit of converter is supplemented with former of disabling pulses. Former of disabling pulses prohibits operation of comparator connected to output of receiving path for the time of function of transient process in input network of receiving path. Insertion of former of disabling pulses makes it feasible to exclude false operation of comparator when information signals coincide with synchronous electromagnetic interference and to enhance noise immunity of converter by this. EFFECT: enhanced noise immunity of converter. 2 dwg \