| 摘要 |
FIELD: measurement technology. ^ SUBSTANCE: seismograph can be used for registering horizontal vibrations generated by seismic waves from sources of natural and artificial origin. Seismograph has inertial mass and its arm till axis of oscillation, elongated arm of pendulum provided with fragment of soft magnetic cylindrical surface of rotation at its end which has radius being equal to elongated arm of pendulum. Mass of soft magnetic cylindrical surface of rotation is significantly smaller than inertial mass. Seismograph also has cylindrical magnetic III-shaped cross-section system in form of assembly made of central permanent magnet, inserted into cylindrical yoke made of soft magnetic material, unit for conversing oscillations of pendulum system to electric signal and electric signal amplifier. ^ EFFECT: improved reliability of operation; preserved increment in period of self-oscillations. ^ 2 dwg |
