Apparatus and method for vector component data acquisition

A data acquisition and equipment technology, applied in the direction of mechanical equipment, the size/direction of the magnetic field, special electric/magnetic detection during transportation, etc., can solve the problem of difficult prediction and removal, high-precision electromagnetic measurement of motion noise pollution, and reduce data Quality and other issues

Active Publication Date: 2019-04-09
VALE LIMITED
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Problems solved by technology

However, while these directional stabilization devices may have the advantage of limiting the range of motion, they may be a vector through which motion noise can be emitted from the vehicle to sensors mounted on the instrument platform
[0023] Such conventional directional stabilization devices may introduce vibration noise or torque sources, which may degrade the quality of the data
Motion noise that may be introduced by these orientationally stabilized systems may contaminate high precision electromagnetic measurements and may be difficult to predict and remove

Method used

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  • Apparatus and method for vector component data acquisition
  • Apparatus and method for vector component data acquisition
  • Apparatus and method for vector component data acquisition

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Embodiment Construction

[0073] To control motion noise, it is necessary to isolate the angular motion of the sensor from the angular motion and vibration of the carrier. Conventional aeronautical electromagnetic systems employ bungee-cord suspensions for this purpose. They generally cannot achieve the high degree of stability required to reduce motion noise to acceptable levels at frequencies below 20 Hz to 25 Hz. The methods and systems disclosed herein may be particularly suitable for airborne electromagnetic surveys in the range of 1 Hz to 25 Hz.

[0074] According to various embodiments of the present disclosure, an electromagnetic survey device for collecting electromagnetic data that reduces motion noise is disclosed. The devices disclosed herein may be towed or otherwise moved by a vehicle to acquire geophysical survey data. Certain embodiments described herein relate to aerial equipment that may be towed by an aerial vehicle. It should be understood, however, that embodiments of the presen...

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Abstract

The invention relates to an apparatus and a method for vector component data acquisition. Aspects of the disclosure may reduce motion noise by mounting vector component sensors on a bottom-weighted instrument platform that is supported with a spherical bearing. An apparatus for data acquisition is provided. The apparatus includes a base assembly, a spherical bearing mounted to the base assembly, and an instrument platform having at least one vector component sensor fixed thereto. The instrument platform is mounted on and supported by the spherical bearing. The spherical bearing couples the instrument platform to the base assembly and allows free angular rotation of the instrument platform, within a tilt angle range. The instrument platform is bottom weighted in that it has a center of massdisposed below its center of rotation. The apparatus may include a controller that receives and/or stores data from the at least one sensor.

Description

technical field [0001] The present disclosure relates to acquiring vector component data. More particularly, the present disclosure relates to collecting data from mobile carriers. Background technique [0002] Electromagnetic (EM) surveying systems detect electromagnetic fields scattered from the Earth and are widely used to map its electrical properties, primarily changes in its electrical conductivity, and sensitivities to polarizability, permittivity, and magnetic permeability. Certain electrical properties may be associated with different geological features, so electromagnetic survey data can be used to infer the presence or likelihood of various commodities such as oil, minerals, and groundwater. [0003] Electromagnetic survey systems typically respond to the presence of quasi-static time-varying currents in the ground. The electrical properties of the Earth can be inferred by measuring the time-varying nature of the magnetic field established by this current using...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V3/12
CPCG01R33/022G01V3/15G01V7/16G01V3/12Y02A90/30G01V3/165B64C39/02B64D3/00F16M11/14F16M13/02G01V3/17G01V3/38
Inventor 本杰明·戴维·波尔策彼得·怀特·沃克戈登·福克斯·韦斯特彼得·安东尼·赫尔利罗伯特·莱斯利·斯科特·霍格
Owner VALE LIMITED
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