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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 1:32 |
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Conference: Bucharest University Faculty of Physics 2004 Meeting
Section: Atmosphere and Earth Science; Environment Protection
Title:
The Parameters of a Sensor
Authors:
A.Neacsu C.Ciucu
Affiliation:
Faculty of Physics, Bucharest Universtity P.O.Box MG-11
E-mail
alpha-xrx@go.ro
Keywords:
Seismology, seismograph
Abstract:
The development of electronics and technology led to the development of high precision sensors. Generally all sensors are based on the inertia of a suspended mass which remains stationary with respect to the ground`s movement.
In the case of electromagnetic instruments, a coil is linked to the mass of a pendulum that moves in a magnetic field, creating an electric tension.
In the case of this sensor, there is no need for a damper mechanism due to the fact that the damping force is produced by the currents induced in a copper plate oscilating in a strong magnetic field.
In the experiment we determined the inner oscilating frequency and the damping factor of a sensor based on a mobile coil.
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