Matches 1 - 49 out of 49


Match Document Document Title
US20140338445 METHOD OF UTILIZING MOBILE DEVICE TO DETECT EMERGENCY AND RELATED EMERGENCY DETECTING SYSTEM  
A method of utilizing a mobile device to detect an emergency includes detecting whether the mobile device is carried by a user; detecting an acceleration status of the mobile device when the...
US20140190255 ULTRA HIGH RESOLUTION GRAVITY GRADIOMETERY TECHNIQUE  
A method and system provide the ability to measure relative displacement and rotation. A first light is continuously shined from a first light source that is fixed on a first entity to a first...
US20140165720 ESTIMATING CHANGE IN POSITION OF PRODUCTION TUBING IN A WELL  
Characterizing a parameter of interest relating to a formation intersected by a borehole. Methods may include estimating the parameter using at least one gravity measurement adjusted to account...
US20120010817 Continuous Gravity Survey of a Borehole  
Gravity measurements from a borehole gravity survey are obtained by continuously moving the gravity meter within the borehole. Movement-induced acceleration errors are quantified and subtracted...
US20150090028 Atom Interferometry Device for Differential Inertial Measurement  
An atom interferometer with differential inertial measurement comprises an atom source system to supply several sets of atoms intended for acceleration measurements which are made simultaneously...
US20150234087 Double Pendulum Gravimeter and Method of Measuring Gravity Using the Same  
A double pendulum gravimeter accurately measures gravity by transferring aligned mode energy between suspension points of the pendulums to establish equal arcs of oscillation of the pendulums and...
US20120252042 Artificial Feces  
A composition to simulate feces. A method of using artificial feces to evaluate the efficacy of a cleaning product and/or cleaning procedure. A method of demonstrating the cleaning efficiency of a...
US20150234085 DE-CENTRALIZED CONTROL ARCHITECTURE FOR IMPROVED SENSITIVITY OF ACCELEROMETER-BASED GRAVITY GRADIOMETERS  
A method for rebalancing a group of accelerometers in a gravity gradiometer instrument (GGI) includes the steps of defining and implementing a number of group-wise actuation constrainment modes...
US20140026655 Test Mass and Method for Interferometric Gravity Characteristic Measurement  
A test mass used for light beam interferometric gravity characteristic measurement has a center of mass located equidistant and colinear with optical center points of two oppositely reflecting...
US20120279296 METHOD AND APPARATUS FOR MOTION SENSING WITH INDEPENDENT GRIP DIRECTION  
A motion sensing technique. A method for motion sensing of a motion sensing apparatus include determining a gravity direction, determining an actual motion, and determining a current motion based...
US20090228235 Accelerometer with Enhanced DC Stability  
An accelerometer with improved immunity to sensitivity drift is disclosed. In some embodiments, the accelerometer comprises an actuator that induces a known acceleration on a reference frame. A...
US20100161226 SYSTEM AND METHOD FOR GRAVITY MEASUREMENT IN A SUBTERRANEAN ENVIRONMENT  
A technique facilitates the collection of improved gravitational acceleration measurements and enables use of those measurements in analyzing environmental characteristics of a subterranean...
US20090126486 ORIENTATION INDEPENDENT GRAVITY SENSOR  
An instrument for measuring gravitational acceleration, the instrument including: a plurality of accelerometers disposed about a three-dimensional structure, the plurality of accelerometers...
US20110303005 METHOD OF DETERMINING THE DIP OF A FORMATION  
A method of determining the dip or apparent dip of a section of a subterranean formation is described using the measurements of a borehole gravity meter and a dip-dependent model for the response...
US20150247949 Low-Temperature Superconducting Device for Measuring Gravity  
A low-temperature superconducting device for measuring gravity, includes a low-temperature container, a cryocooler, a rotor chamber, a superconducting rotor, an upper levitation coil, a lower...
US20100175472 Gravity Survey with Relative and Absolute Gravimeters  
A gravity survey is conducted by obtaining relative gravity measurements from a plurality of survey points using a relative gravimeter, obtaining absolute gravity measurements from a subset of a...
US20150128696 Superconducting Acceleration Sensor Suitable For Gravitational Wave Radiation Detection  
This invention detects mass and mass motion of external objects by virtue of its action as a gravimeter, gravity gradiometer, and detector of gravitational fields. This invention is for devices...
US20110185806 METHOD AND APPARATUS FOR PRECISE POSITIONING OF A BOREHOLE MEASUREMENT INSTRUMENT  
A system and method for use in a downhole tool having distance measurement, feature detection, and primary measurement devices positioned therein are provided. In one example, the method includes...
US20090235740 Gravity Gradient Sensor  
A gravimeter for detecting a gravity difference between two points is disclosed. The gravimeter comprises an interferometric arrangement wherein the length of a reference arm is dependent upon the...
US20080295594 METHOD AND APPARATUS FOR MEASUREMENTS OF GRAVITY IN SMALL DIAMETER BOREHOLES  
An apparatus for measuring gravity in a small diameter borehole comprises a pressure tube and at least one pendulum gravity sensor accommodated by the pressure tube. The gravity sensor comprises a...
US20130031975 GRADIOMETER  
Primarily (but not exclusively) in the field of natural resources exploration, there is a requirement to measure the absolute value and variation of gravity at a given point and over an area...
US20100116049 Gravimeter Launch Mechanism  
A gravimeter that utilizes an electromagnetic launcher for enabling a free-fall of a test mass is disclosed. The electromagnetic launcher propels the test mass upward such that the test mass...
US20100275686 INERTIAL SENSING SYSTEM WITH A CURVED BASE AND A DIAMAGNETIC MASS  
An inertial sensing system includes a diamagnetic mass, a plurality of permanent magnets positioned to form a curved base, wherein the plurality of permanent magnets are configured to provide an...
US20090114014 FORCE AND ACCELERATION SENSOR USING FOUR WAVE MIXING TECHNIQUE  
A sensor for measuring force, the sensor including: a light source; and a mixing medium in optical communication with the light source and exposed to the force; wherein four wave mixing of light...
US20130205894 Interferometric Differential Free-Fall Gradiometer  
The invention relates to an interferometric free-fall gravity gradiometer, comprising at least one source of coherent light L and a first retroreflector TM1 able to fall freely in the gradiometer...
US20100083753 METHOD FOR THE ESTIMATION OF FLUIDS MOVED IN COMPARTMENTED AREAS OF THE SUBSOIL  
The present invention relates to a method for estimating fluid volumes moved in compartmented areas of the subsoil, including steps which consist in effecting, in a survey field, a series of...
US20140083186 SYSTEMS, DEVICES AND METHODS FOR BOREHOLE GRAVIMETRY  
A gravimeter, a gravimeter system, and a method for measuring gravitational acceleration within a borehole are described herein. The gravimeter includes a proof mass that is constrained by springs...
US20100147071 Matter-Wave Gravimeter Incorporated into an Atom Chip  
The general field of the invention is that of gravimeters, of the matter-wave type, allowing the measurement of the gravitational field or of an acceleration in a given direction of measurement....
US20130042680 APPARATUS FOR MEASURING GRAVITATIONAL FORCE AND METHODS OF USING THE SAME  
An apparatus for measuring gravitational force is provided having at least one optomechanical oscillator, the at least one optomechanical oscillator having an initial resonance, and a second...
US20090293612 GRAVITY SENSOR AND ELECTRONIC DEVICE USING THE SAME  
A gravity sensor includes a chamber, a number of receiving holes, an electrically insulative liquid, a number of pressure sensors, and a number of sealing elements. The receiving holes are defined...
US20090223291 GRAVITY MEASURMENT METHODS FOR MONITORING RESERVOIRS  
A method of performing gravity surveys in a wellbore is described including performing a time-lapse measurement in a monitoring well in the vicinity of injector wellbores, determining a depth for...
US20150191056 WHEEL POSITION DETECTION APPARATUS AND TIRE AIR PRESSURE DETECTION APPARATUS HAVING THE SAME  
In a wheel position detection apparatus, a first controlling section of a transmitter repeatedly transmits a frame including specific identification information at a timing when an angle of the...
US20120271549 Method of Mapping Reservoir Fluid Movement Using Gravity Sensors  
The present disclosure relates to methods and apparatuses for acquiring multi-component gravity information for an earth formation. More particularly, the present disclosure relates to estimating...
US20100153050 Autonomous Underwater Vehicle Borne Gravity Meter  
Techniques and systems are disclosed for performing a gravity survey near the seafloor. In one aspect, a system includes an autonomous underwater vehicle that includes a sensor system holding...
US20100071461 MICROGRAVIMETER FOR GEOPHYSICAL PROSPECTING  
An apparatus and a method for measuring the gravitational acceleration on the ground, for example adapted to geophysical explorations applied to mining, comprising a base frame (31), a resonator...
US20140102191 PILOTING METHOD OF A LASER SYSTEM OF AN ABSOLUTE GRAVIMETRIC MEASUREMENT DEVICE BY ATOMIC INTERFEROMETRY FOR GEOPHYSICAL APPLICATIONS PARTICULARLY FOR MONITORING HYDROCARBON RESERVOIRS  
A piloting method of a laser system of an absolute gravimetric measurement device by atomic interferometry particularly suitable for on-site applications and advantageously usable in the...
US20130186198 GRAVITY AXIS DETERMINATION APPARATUS AND MOBILE TERMINAL APPARATUS USING THE SAME  
A gravity axis determination apparatus which can determine the gravity direction in a short time. The apparatus is low in cost and has a simple construction. Data values of acceleration data...
US20140013841 ABSOLUTE GRAVIMETRIC MEASUREMENT DEVICE BY ATOMIC INTERFEROMETRY FOR GEOPHYSICAL APPLICATIONS PARTICULARLY FOR MONITORING HYDROCARBON RESERVOIRS  
An absolute gravimetric measurement device including, in succession, a laser system, a supporting surface of the laser system, an ultra-vacuum system, a retroreflective mirror, and a seismic...
US20080257039 Device and Method for the Gravimetric Determination of Liquid Volumes and Analyzer System Comprising Such a Device  
A device for the gravimetric volume determination of liquid volumes. The device comprises a housing (11) having the shape and dimensions of a standard rack used in a clinical diagnostic analyzer...
US20100130258 Gravity axis determination apparatus and mobile terminal apparatus using the same  
A gravity axis determination apparatus which can determine the gravity direction in a short time. The apparatus is low in cost and has a simple construction. Data values of acceleration data...
US20100036287 Method and Device for Detecting Parameters for the Characterization of Motion Sequences at the Human or Animal Body  
The invention relates to a bending sensor for detecting function parameters for the characterization of motion sequences at the human or animal body. The bending sensor comprises a fixing element...
US20140007677 ABSOLUTE GRAVIMETRIC MEASUREMENT DEVICE BY ATOMIC INTERFEROMETRY FOR GEOPHYSICAL APPLICATIONS PARTICULARLY FOR MONITORING HYDROCARBON RESERVOIRS  
A device comprising a laser system (13) for generating a plurality of laser bands, such laser bands being each conformant at a frequency equal to an energetic transition between a hyperfine level...
US20160178792 GRADIOMETER CONFIGURATION INVARIANT TO LASER PHASE NOISE AND SENSOR ROTATIONS  
A system for gravity measurement includes one or more atom sources, two or more laser beams, and a polarizing beamsplitter and a retro-reflection prism assembly. The one or more atom sources is to...
US20160116631 Method for Producing an Integrated Circuit Pointed Element, and Corresponding Integrated Circuit  
A method for producing an integrated circuit pointed element is disclosed. An element has a projection with a concave part directing its concavity towards the element. The element includes a first...
US20150331142 MATTER-WAVE GRAVIMETER WITH MICROWAVE SEPARATION AT THE MAGIC FIELD  
The general field of the invention is that of matter-wave gravimeters. The gravimeter according to the invention comprises at least: means for generating, for capturing and for cooling a cloud of...
US20140318239 Interferometric Gravimeter Apparatus and Method  
A gravity value is measured using two light beams which each reflect from both a freefall test mass and a stationary reference test mass which is inertially supported by a long period isolation...
US20140260605 Polarized Beam, Matched Coincident Beam Path, Interferometric Gradiometer Apparatus and Method  
A gravity gradient is measured interferometrically from two polarized light beams having mutually different polarization planes which reflect from opposite surfaces of two freefalling test masses....
US20140096606 DETECTOR OF GRAVITATIONAL WAVES AND METHOD OF DETECTING GRAVITATIONAL WAVES  
A semiconductor detector of gravitational waves of a first frequency may include an oscillator having a metal coated oscillating member over a metal coated semiconductor substrate to be subjected...
US20110046913 SYNTHETIC VIBRATION ISOLATION SYSTEM FOR FREEFALL GRAVIMETER  
A gravimeter is disclosed that comprises a base, a reference device coupled to the base and configured to move along a first axis, a falling device configured to free fall from a first position to...

Matches 1 - 49 out of 49