| 摘要 |
<p>A geophone system with a mechanical transducer and an electronic processing device, the mechanical transducer comprising an inertial mass and a force transducer, the inertial mass being adapted to be excited by an input acceleration signal and by the force transducer, the excitation being detected by a sensor element, said force transducer being controlled by the electronic processing device, which electronic processing device comprises an analog/digital converter being controlled by the sensor element; the sensor element (4) detects the velocity of the inertial mass (2) and controls the analog/digital converter (8) by means of an amplifier (5) with a very high gain factor, the output of the analog/digital converter (8) being connected with the input of a digital/analog converter (11), and the output of this digital/analog converter (11) controlling the force transducer (12).</p> |
