Intelligent broadband long-period magnetotelluric measurement system

A measurement system, magnetotelluric technology, applied in radio wave measurement systems, geophysical measurements, measurement devices, etc., to achieve the effects of increasing labor costs, eliminating 1/f noise, and reducing power consumption

Active Publication Date: 2017-05-31
北京优赛寰宇科技有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

[0007] In order to overcome the deficiencies of the existing MT measurement system in terms of frequency band, noise, power consumption, and intelligence, the present invention provides a broadband intelligent long...

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  • Intelligent broadband long-period magnetotelluric measurement system
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  • Intelligent broadband long-period magnetotelluric measurement system

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Embodiment Construction

[0028] Such as figure 1As shown, a broadband intelligent long-period magnetotelluric measurement system, the measurement system consists of a data logger 1, an electrode 2, a three-axis inductive magnetic sensor 3, a three-axis fluxgate sensor 4, a solar panel 5, and 3 groups Composed of lead-acid batteries 6 and cables; the data logger is connected to electrodes, three-axis inductive magnetic sensors and three-axis fluxgate sensors through cables; the electrodes are used as electric field sensors and are non-polarized electrodes, and the typical drift of the electrodes is 10uV / day. Realize the observation of electric field signals; the three-axis inductive magnetic sensor is three magnetic sensors arranged along the three directions of true north, true east, and vertical downward to observe 3-component magnetic field signals. The working bandwidth of the inductive magnetic sensor is 0.5mHz-1000Hz. The power consumption of a single sensor is about 100mW, and the noise floor le...

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Abstract

The invention discloses an intelligent broadband long-period magnetotelluric measurement system comprising a data recorder. The data recorder is connected with an electrode, a three-axis inductive magnetic sensor and a three-axis flux gate sensor through cables. The electrode is a non-polarizable electrode, and is used for observing electric field signals. The three-axis inductive magnetic sensor is composed of three magnetic sensors which are arranged in the due north, due east and vertically-down directions respectively and are used for observing three-component high-frequency magnetic field signals. The flux gate sensor is integrated with a three-axis coil and is used for observing three-component low-frequency magnetic field signals. The data recorder collects and stores the voltage output signals of the electrode, the three-axis inductive magnetic sensor and the three-axis flux gate sensor at high precision. The data recorder is equipped with multiple groups of lead-acid batteries and is connected with a solar panel. The multiple groups of lead-acid batteries are connected in parallel to power the data recorder. The solar panel charges the multiple groups of lead-acid batteries. The system is built to satisfy the demand for building a long-period magnetotelluric observation station, and has the characteristics of wide frequency, low noise, low power consumption, and intelligence.

Description

technical field [0001] The invention relates to a broadband intelligent long-period magnetotelluric measurement system, which belongs to field observation equipment of the magnetotelluric method and is used for low-noise intelligent long-period acquisition of magnetotelluric signals. Background technique [0002] The magnetotelluric method is one of the branch methods of geophysical electrical prospecting, which belongs to the frequency domain passive source method. Obtain the electrical structure at different depths underground by observing the orthogonal electromagnetic field components through data processing and inversion. The method has the advantages of large detection depth, portability and low cost of field operation. [0003] One of the key technologies of the magnetotelluric (MT) method is to realize a high-precision observation system of MT signals. The measurement system completes the broadband, multi-channel, low noise, synchronous and intelligent observation ...

Claims

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Application Information

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IPC IPC(8): G01V3/08
CPCG01V3/08G01V3/088
Inventor 陈凯魏文博邓明
Owner 北京优赛寰宇科技有限公司
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