Measuring and testing – Vibration – Sensing apparatus
Patent
1980-08-29
1982-11-30
Gill, James J.
Measuring and testing
Vibration
Sensing apparatus
336 30, G01H 100
Patent
active
043610455
ABSTRACT:
A vibration sensor comprised of a movable body, a permanent magnet coupled to the movable body, and a displacement pulse phase conversion unit including a magnetically soft member carrying an electrical coil thereon and fixedly disposed in the vicinity of the course of movement of the permanent magnet. A pulse voltage is applied to one end of the electrical coil. A voltage drop occurs across a resistor which is connected in series with the other end of the electrical coil. A time lag of the voltage drop with respect to the pulse voltage, representing a vibrational amplitude, is provided in the form of an analog voltage.
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"Force and Displacement Transducers" by Mohri et al., from "Electrical Engineering in Japan", vol. 99, No. 2, pp. 105-112, 2-79.
Aisin Seiki Company Limited
Gill James J.
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