| 摘要 |
FIELD: navigation; control equipment for sea-going and river ships. ^ SUBSTANCE: proposed device includes inductive longitudinal speed primary converter, longitudinal channel shunt, longitudinal channel measuring amplifier, reference longitudinal channel amplifier, longitudinal channel synchronous detector, analog-to-digital converter, filter, speed indicator, run distance generating unit, corrector, control unit, reference frequency generator and excitation generator. Detector is connected with phase shifter for periodic correction of readings depending on water salinity; phase shifter forms measuring signal proportional to electric conductivity of water. ^ EFFECT: enhanced accuracy and reliability of measurements. ^ 3 cl, 1 dwg |
