173239 ⎘
Seismology; Seismic or acoustic prospecting or detecting; Receiving elements for seismic signals; Arrangements or adaptations of receiving elements; Receiving elements, e.g. seismometer, geophone or torque detectors, for localised single point measurements; Geophones with moving coil
GEOPHONE FAULT DETECTION
#2VIBRATION-ANALYSIS SYSTEM AND METHOD THEREFOR
#3Internal structure detection system
#4OMNI-DIRECTIONAL GEOPHONE WITH 10 HERTZ NATURAL FREQUENCY
#5Transducer structure, transducer comprising such transducer structure, and sensor comprising said transducer
#6Systems and methods for seismic data acquisition
#7Coupling evaluation geophone and method for eliminating ground-geophone coupling effect
#8BROADBAND GEOPHONE ACCELEROMETER
#9Dual core locking geophone
#10Closed loop control techniques for displacement sensors with optical readout
#11Apparatus for Sensor with Programmable Gain and Dynamic Range and Associated Methods
#12Apparatus for Sensor with Improved Power Consumption and Associated Methods
#13Temperature compensation for seismic sensor and method
#14Downhole seismic sensor with filler fluid and method of using same
#15Controlled damping geophone
#16Dual-coil geophone accelerometer
#17Multi-coil multi-terminal closed-loop geophone accelerometer
#18Micro-geophone
#19Micro-geophone
#20Deployable ground sensors
#21Long-period vibration sensor and method for correcting output value of the long-period vibration sensor
#22Methods and systems for seismic signal detection
#23Vertical geophone having improved distortion characteristics
#24Geophone having improved damping control
#25Geophone with mass position sensing