Calibration method of underwater measuring device and underwater detection system

A technology of underwater measurement and calibration method, which is applied in the field of marine exploration, can solve the problems of large spatial distance distribution of observation electrodes, lower accuracy of measurement results, inability to measure electrodes, and whether watertight cables are connected correctly, etc., so as to improve reliability and The effect of observation accuracy, improvement of stability, reliability and data quality, and reduction of offshore operating costs

Active Publication Date: 2021-07-30
CHINA UNIV OF GEOSCIENCES (BEIJING)
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Problems solved by technology

[0004] Based on this, the electrodes must be in contact with seawater when observing the electric field signal, and the spatial distance distribution of the observation electrodes is large, usually the electrodes are 10m apart. work, which brings uncertainties to the offshore electric field measurement work and reduces the accuracy of the measurement results

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  • Calibration method of underwater measuring device and underwater detection system
  • Calibration method of underwater measuring device and underwater detection system
  • Calibration method of underwater measuring device and underwater detection system

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Embodiment Construction

[0025] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0026] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation or position indicated by "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. The relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, therefore It should not be ...

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Abstract

The invention discloses a calibration method of an underwater measurement device and an underwater detection system. The underwater measurement device includes a receiver, and the receiver is provided with an acquisition module and an excitation module. The method includes: acquiring first data, wherein the The first data is the excitation signal collected by the acquisition module after a certain distance transmission, the excitation signal is the signal generated by the excitation module at a preset time, and the first data is the acquisition module when the deck is calibrated before launching Collected data; performing data processing in a preset manner on the first data to obtain a first calibration coefficient; if the first calibration coefficient is not within a preset range, troubleshooting the underwater measurement device. The calibration method and underwater detection system of the underwater measurement device provided in this embodiment can ensure that the equipment works normally before launching, solve the self-inspection problem at the measurement site, improve the stability, reliability and data quality of the measurement device, and reduce the cost of offshore operations.

Description

technical field [0001] The invention relates to the technical field of marine exploration, in particular to a calibration method of an underwater measuring device and an underwater detection system. Background technique [0002] Oceanographic electrical method is one of the many branch methods of marine geophysical exploration, which is used to find out the electrical structure below the seabed, and is widely used in the fields of mineral resource exploration and structural geological research. One of the key technologies of its marine electrical method is to realize high-precision observation of underwater electromagnetic field signals, and the accuracy of electric field measurement is directly related to the detection resolution. [0003] Typically, the observation of the electric field signal is achieved using a sensor, and electrodes are usually used as sensors. [0004] Based on this, the electrodes must be in contact with seawater when observing the electric field sig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V13/00G01R29/12G01R23/16
CPCG01R23/16G01R29/12G01V13/00
Inventor 陈凯王琛邓明王猛
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)
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