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WO/1989/005462A1 |
Common mode (82) and differential mode (84) sensing coils are arranged adjacent a bottom-side surface of a portion of the proof mass (60) in one hollowed out annular portion (70) and a levitation coil (86) is arranged adjacent a bottom-s...
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WO/1988/004784A1 |
A method of making a representation of small amplitude regional variations in the position of the geoid. Natural resources having a density distinguishing from that of the surroundings in the seafloor may cause such variations in the sea...
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WO/1981/000307A1 |
To locate potentially hydrocarbon-bearing subsurface formations, tilt-meters (T1, T2, T3, T4, T5) measure the time of arrival and the apparent direction of a lunar/solar induced earth tide (24) at an array of points on the earth's surfac...
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WO/1980/001114A1 |
This invention is performed on the basis of the recognition on physics, that repulsion accelerating substances of approximately 108 (Alpha)BA 1010 g (wherein g is gravitational acceleration on the earth) to the earth are created by the e...
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JP2022183597A |
To provide a detector and a detecting program for construction sites capable of improving business efficiency by automatically identifying construction sites and capable of grasping the construction sites by visualizing the construction ...
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JP6723111B2 |
Provided is a gravity measuring device which is capable of autonomous navigation and hovering in water and which is grounded on a body-of-water bottom to measure gravity. The gravity measuring device comprises: a gravity measuring unit f...
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JP6529735B2 |
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JP6468606B2 |
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JP2017526919A |
For example, an accelerometer is disclosed for use as a gravimeter or gradiometer. The device has a support and a test weight that are coupled to each other by a deflection that allows the test weight to displace with respect to the supp...
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JP6175131B2 |
A gravity transducer includes a particle system characterized by internal vibrations relating to its de Broglie wave, a resonant cavity for trapping the particle without holding it in a lattice structure; a source of a phonon wave, where...
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JP6028193B2 |
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JP5712000B2 |
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JP5578667B2 |
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JP2014119306A |
To provide a load detection cell capable making a zero point that the load detection cell outputs more uniform than before even if the load detection cell has a position shift in its manufacture, a method of manufacturing the load detect...
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JP5519669B2 |
A high-resolution digital seismic and gravity sensor includes an inertial mass connected to one or more force-sensitive resonators. The weight of the inertial mass is substantially unloaded with a spring arrangement when exposed to the f...
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JP5464491B2 |
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JP2014507636A |
The apparatus includes a laser system (13) that generates multiple laser bands, the laser band being the reference state of the plurality of atoms (5).2S1/2) Hyperfine level (F1, F2) and excited state (5)2P3/2) Hyperfine level (F'2, F'3A...
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JP2014507634A |
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 geophysical field, including: generating cooling, ...
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JP2014504720A |
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 attenuation system. The seismic attenuation sy...
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JP2013061158A |
To provide an apparatus for measuring the gravity of the earth that is composed of: a single pendulum; a high-speed camera; and a measuring unit body for calculating the acceleration of the gravity through analysis of a camera image, acq...
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JP5159559B2 |
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JP5099424B2 |
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JP5030107B2 |
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JP5006454B2 |
The disclosure relates to a cold atom interferometry sensor that includes: a source of atoms; a dual-frequency laser capable of generating a first Raman dual-frequency laser beam; a reflector arranged so as to reflect the first Raman dua...
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JP4960973B2 |
A method of interpolation between a plurality of field gradient tensors including the steps of: accessing a plurality of field gradient data; formatting said plurality of field gradient data into 3-dimensional tensors of rank 2; determin...
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JP4892189B2 |
The invention concerns an inertial sensor or an actuator based on diamagnetic levitation, said inertial sensor or actuator comprising support means serving as main support body for an inertial sensor or for an actuator, a two dimensional...
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JP2011209200A |
To understand deformation of a foundation of a seabed to be observed in two-dimension or three-dimension with a simple system configuration.The seabed observation system includes a plurality of sensor means for detecting displacement of ...
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JP4593367B2 |
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JP4568590B2 |
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JP4566818B2 |
A microelectromechanical system (MEMS) sensor and method for measuring the motion of an intermediate member and a method for making the MEMS sensor. The MEMS sensor includes a substrate, a lower magnetic member disposed on the substrate,...
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JP4509832B2 |
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JP2010151814A |
To provide a matter-wave gravimeter incorporated into an atom chip. This matter-wave gravimeter includes: an atom trap 5 that can immobilize an ultracold atom cloud; and means 7 for splitting-recombining the cloud into two atom packets p...
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JP4463729B2 |
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JP2010510498A |
A gravity gradiometer is disclosed which has sensor masses in the forms of bars 41 and 43 arranged orthogonal to one another and transducers for providing an output signal indicative of movement of the bars in response to changes in the ...
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JP2010510496A |
A gravity gradiometer is disclosed which comprises a pair of sensor masses arranged in housings. Transducers are provided for measuring movement of the sensor masses in response to the gravity gradient tensor. The masses are supported fo...
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JP2010510499A |
A gravity gradiometer and method for forming a pivot flexure web for a gradiometer is disclosed. The gradiometer has measurement bars 41, 43 supported in housings 45 and 47 and transducers 71 for measuring movement of the bars to provide...
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JP2010510497A |
A heat switch 570 is disclosed as well as a gradiometer having the heat switch. The heat switch is formed from a non-magnetic material such as a semi-conducting material. The semi-conducting material may be provided by way of a Hall effe...
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JP4412670B2 |
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JP4362766B2 |
A method includes measuring an acceleration along an input axis of an accelerometer mounted to a gradiometer disc, the accelerometer having a coordinate axis that is parallel to a spin axis of the disc, and includes calculating a gravity...
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JP4316777B2 |
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JP2009510461A |
A gravity gradiometer is disclosed which has a sensor in the form of bars (41 and 42) which are supported on a mounting (5) which has a first mount section (10) and a second mount section (20). A first flexure web (33) pivotally couples ...
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JP2009510459A |
A gravity gradiometer is disclosed which has a sensor in the form of bars (41 and 42) which are supported on a mounting (5) which has a first mount section (10) and a second mount section (20). A first flexure web (33) pivotally couples ...
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JP2009510460A |
A gravity gradiometer is disclosed which has a sensor in the form of bars (41 and 42) which are supported on a mounting (5) which has a first mount section (10) and a second mount section (20). A first flexure web (33) pivotally couples ...
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JP2009510458A |
A gravity gradiometer is disclosed which has a sensor in the form of bars (41 and 42) which are supported on a mounting (5) which has a first mount section (10) and a second mount section (20). A first flexure web (33) pivotally couples ...
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JP4212125B2 |
A proof mass support system comprising a pair of alignment coils (42,42',44,44') for controlling the rest position of an elongate proof mass (3,4). The alignment coils are constructed to provide a levitation force when they carry electri...
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JP4168407B2 |
A fall detection device is provided, which accomplishes a fall judgment on acceleration by a simple calculation and improves uniformity of effective threshold value for the acceleration judgment as to a direction of an applied accelerati...
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JP4111952B2 |
A structure is isolated from a seismic event by inducing soil liquefaction in an isolation layer beneath the structure and soil foundation zone, such as by activating an electro-osmosis gradient toward the isolation layer, during the sei...
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JP2008136415A |
To provide an observation apparatus for improving the precision of an agent irritation observation while controlling a cost.The observation apparatus comprises a sensor (151) for monitoring the presence of administration to a material to...
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JP2007093568A |
To provide a light-weight gravimeter convenient for carrying.By shifting the standpoint from falling rate of a measuring object, elongation of a spring, and magnetic repulsion to which conventional devices paid attention to gravitational...
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JP3879969B2 |
To provide a means capable of accurately detecting the presence or absence of an occupant on a front-seat passenger's seat or adult or child by a relatively simple constitution. A weight sensor 2 for measuring the weight of the front-sea...
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