| 摘要 |
FIELD: electromagnetic displacement sensors. ^ SUBSTANCE: proposed sensor includes sinusoidal oscillator, exciting loop antenna with excitation winding, receiving antenna with measuring winding, narrow-band amplifier, detector, signal processing unit, one- or multi-turn wire loop and non-linear element. Exciting antenna is connected with oscillator. Receiving antenna is connected in series with amplifier, detector and signal processing unit. Multi-turn wire loop is connected with non-linear element. Working frequency of narrow-band amplifier is twice as mush as compared with sinusoidal oscillator. ^ EFFECT: enhanced noise immunity; enhanced reliability; avoidance of false operation. ^ 5 dwg |
