Patent ID: 11953635
Assignee: INSTITUTE OF GEOLOGY AND GEOPHYSICS, CHINESE ACADEMY OF SCIENCES
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 1:
2. The seismometer with high sensitivity, broadband and all-dip according to claim 1, wherein each of the first force feedback module (1), the second force feedback module (16) and the third force feedback module (17) comprises a first control sub module and a second control sub module; the first control sub module comprises a coil and a PID feedback circuit; the second control sub module comprises an application layer, an algorithm layer connected to the application layer, and a sensing layer connected to the algorithm layer;
the application layer is configured to obtain dynamic orientation and obtain perception of low-frequency signals based on the dynamic orientation;
the algorithm layer is configured to calculate feedback parameters of the seismometer based on the first force feedback module (1) by using a broadband seismometer method based on dynamic force balance feedback, and to cancel interference of gravity components based on the first force feedback module (1), the second force feedback module (16) and the third force feedback module (17) by using an all-dip broadband seismometer method based on dip angle perception, and feedback angle and attitude information of current seismometer;
the sensing layer is configured to influence a motion of the mass block (6) based on a generated feedback force to obtain a sensing perception result; and
the PID feedback circuit is configured to generate feedback current according to the feedback parameters of the seismometer, and generate feedback force based on the coil.