摘要:
A multiple axis sensor assembly includes an enclosure and encapsulated microelectromechanical system (MEMS) sensors. The encapsulated sensors are disposed inside the enclosure and are mounted in different orientations, which correspond to different axes of the sensor assembly. A controller of the sensor assembly is disposed in the enclosure and electrically coupled to the MEMS sensors.
摘要:
A multiple axis sensor assembly includes an enclosure and encapsulated microelectromechanical system (MEMS) sensors. The encapsulated sensors are disposed inside the enclosure and are mounted in different orientations, which correspond to different axes of the sensor assembly. A controller of the sensor assembly is disposed in the enclosure and electrically coupled to the MEMS sensors.
摘要:
A system includes a seismic streamer, which includes particle motion sensors and processors. Each processor is associated with a different one of the particle motion sensors and is adapted to process data acquired by the associated particle motion sensor to compensate the data for a characteristic of the sensor.
摘要:
A technique includes using an accelerometer to provide an output signal indicative of an acceleration experienced by a movable mass of a sensor of the accelerometer. The technique includes testing the accelerometer, and the testing includes using a closed loop including the sensor to provide the output signal of the accelerometer; injecting a test signal into the loop between an output terminal of the sensor and an output terminal of the accelerometer; and indicating a performance of the accelerometer based on a response of the accelerometer to the injection of the test signal.
摘要:
A seismic sensor unit (10) comprises a case (12) containing electronic circuits (18, 20) that serve to digitise and digitally process the output signals of a seismic sensor element (16) inside the case (12). A first digital filtering of acquired signals can be provided at sensor unit level before the data are further fed into a seismic network and further processed.
摘要:
An apparatus includes a seismic acquisition system that includes an accelerometer. The accelerometer includes a capacitive MEMS-based sensor, a controller and a charge amplifier. The sensor includes a proof mass; input terminals to receive a first signal; and an output terminal that is electrically connected to the proof mass to provide a second signal. The first signal, which is regulated by the controller, controls an equilibrium restoring force for the sensor and causes the sensor to provide the second signal. The charge amplifier provides a third signal, which is indicative of a position of the proof mass. The charge amplifier has an input terminal to continuously receive the second signal during a time in which the first signal controls the equilibrium restoring force and causes the sensor to provide the second signal.
摘要:
An apparatus includes a seismic acquisition system that includes an accelerometer. The accelerometer includes a capacitive MEMS-based sensor, a controller and a charge amplifier. The sensor includes a proof mass; input terminals to receive a first signal; and an output terminal that is electrically connected to the proof mass to provide a second signal. The first signal, which is regulated by the controller, controls an equilibrium restoring force for the sensor and causes the sensor to provide the second signal. The charge amplifier provides a third signal, which is indicative of a position of the proof mass. The charge amplifier has an input terminal to continuously receive the second signal during a time in which the first signal controls the equilibrium restoring force and causes the sensor to provide the second signal