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Oceanic capacitive electrode

A capacitive and electrode technology, which is applied in the field of geoelectric field measurement devices in geophysical exploration, can solve the problems that the self-noise level of the electrode cannot be further reduced, the rapid measurement cannot be performed, and the electrode is consumed.

Active Publication Date: 2015-04-08
INST OF ELECTRONICS CHINESE ACAD OF SCI
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Problems solved by technology

However, this kind of non-polarized electrode has some problems in practical use: (1) The non-polarized electrode obtains the electric field potential of the position through the redox reaction of ions, which inevitably brings electrochemical noise, so that the self-noise level of the electrode cannot be further improved. (2) It takes a certain time for the non-polarized electrode to reach electrochemical equilibrium when it is working, so it cannot be measured quickly; (3) The electrochemical reaction of the non-polarized electrode will cause the electrode itself to be continuously consumed

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Embodiment Construction

[0020] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following further describes the present invention in detail in conjunction with specific embodiments and with reference to the accompanying drawings. It should be noted that in the drawings or description of the specification, similar or identical parts use the same drawing numbers. The implementations not shown or described in the drawings are those known to those of ordinary skill in the art. In addition, although this article may provide an example of a parameter containing a specific value, it should be understood that the parameter does not need to be exactly equal to the corresponding value, but can be approximated to the corresponding value within acceptable error tolerances or design constraints. The directional terms mentioned in the embodiments, such as "upper", "lower", "front", "rear", "left", "right", etc., are only directions with reference to the draw...

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Abstract

The invention discloses an oceanic capacitive electrode and is applied to ocean electric field measurement in the field of geophysical exploration. The oceanic capacitive electrode mainly comprises a capacitive electrode body made of metal materials and a protecting structure, and an insulating layer is arranged on the surface of the capacitive electrode body and is high in insulating property and corrosion resistance. The oceanic capacitive electrode has the advantages that direct contact between the capacitive electrode body and external environment media is avoided by the insulating layer, the electrode body and external electrolyte form a capacitor, and an external electric field is measured by means of capacitive coupling; in the presence of the insulating layer, chemical reaction between the electrode and ions in seawater is avoided, electrochemical noise generated during the chemical reaction is further avoided, and the electrode can achieve lower noise level; meanwhile, stabilization time for the electrode to establish balance is shortened, and continuous consumption during electrode use is avoided.

Description

Technical field [0001] The invention relates to a measuring device for the geoelectric field in geophysical prospecting, in particular to a marine capacitive electrode, which is used for collecting electric field data in ocean electrical exploration. Background technique [0002] At present, in order to reduce the influence of the polarization of metal electrodes in ocean electrical exploration, non-polarized electrodes are generally used for data collection of electric field signals. Such as figure 1 As shown, the non-polarized electrode is usually composed of the electrode core 1, the electrolyte 3, the electrode protective shell 2, the bottom device 4 and 5, the top device 6 and the output line 7. The electrode core is usually made of some kind of metal, such as lead, silver The electrolyte is made by mixing the metal salt of the metal and the filler in a certain proportion. The physical form of the electrolyte can be solid or liquid, and the electrode shape can be cylindrical...

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Application Information

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IPC IPC(8): G01V3/08
Inventor 王顺王志宇方广有
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI
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