The present invention relates to the field of geological exploration technology, especially a node multi-electrode resistivity measurement system.
With the progress of society and the improvement of science and technology, multi-electrode resistivity method has been widely applied in mineral, engineering and hydrogeological survey. It is convenient and fast, which can provide more intuitive reference for drilling and further survey and design. Meanwhile, it can effectively shorten the survey period and ensure the efficiency of survey work. It can also be used in geological disaster monitoring to provide protection for geological disaster management.
The principle of multi-electrode resistivity method is the same as resistivity method and time domain induced polarization method. The difference is that multi-electrode resistivity method is an array exploration method. During the measurement, all electrodes (dozens to hundreds) are placed on the observation section, and the electrode conversion device and collector are used to realize the rapid switching between the transmitting electrode and the receiving electrode and the automatic data acquisition. It can process data in real time and display the acquisition results of apparent resistivity and apparent polarizability. Compared with the traditional resistivity method and induced polarization method, the working efficiency of multi-electrode resistivity method is greatly improved.
Since multi-electrode resistivity method adopts array devices to work, the instrument design is more complex. Multi-electrode resistivity system generally includes three parts: the host, the electrode switch and the cable.
The main problem in the structure of multi-electrode resistivity measurement system is how to realize the connection between the measurement host and many electrodes. At present, there are mainly two forms:
However, the multi-electrode resistivity measurement system in the existing technology mainly has the following shortcomings:
The purpose of the invention is to provide a node multi-electrode resistivity measurement system to solve the above problems, such as the problems of bulky cable and strong electromagnetic coupling of the existing multi-electrode resistivity measurement system, and improve the working efficiency and the intensity of the received signal.
The invention realizes the above purpose according to the following technical scheme:
A node multi-electrode resistivity measurement system is provided with a transmitter, a PC terminal, acquisition nodes, transmitting electrodes and receiving electrodes. The transmitter, acquisition nodes and PC terminal are connected by Wifi.
The transmitter and acquisition nodes are connected in series by a five-cores cable. And synchronization between transmitter and acquisition nodes is carried out by GPS.
There are multiple acquisition nodes, transmitting electrodes and receiving electrodes, and each receiving electrode and transmitting electrode are respectively connected with the acquisition nodes. The acquisition nodes are used for conducting the transmitting or receiving electrodes, collecting the potential difference, storing and transmitting data in real time.
As a preferred option of the above technical scheme, the transmitter and the acquisition nodes are connected in series through a long line, which is a five-core cable, including 2 transmitting lines, 1 receiving line and 2 power supply line. The 2-core power supply line provides power for the work of the transmitter and the receiver. The 2-core transmitting line is connected to the power supply electrodes A and B respectively, and the 1-core receiving line is connected to all acquisition nodes and receiving electrodes. The outer layer of each core line is wrapped with a shielding layer.
As a preferred option of the above technical solution, each of the receiving electrodes and the transmitting electrodes are respectively connected to the acquisition node, specifically, each two adjacent receiving electrodes are connected to an acquisition node, and each transmitting electrode is also connected to the same acquisition node.
In the above technical scheme, the methods of using a node multi-electrode resistivity measurement system are as follows:
Q6: Apparent resistivity and apparent polarizability are calculated on PC terminal according to the results of the transmitting current and receiving voltage, combined with the arrangement device, and be displayed in the pseudo-section diagram.
Q7: The PC terminal reads the next configuration information and returns to step Q3 until the work is completed.
The invention provides a node multi-electrode resistivity measurement system with simple structure, convenient operation and ingenious design. The beneficial effects are as follows.
In order to illustrate the embodiments of the present invention or the technical solutions in the existing technology more clearly, the attached drawings used in the embodiments or the existing technical description are briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For ordinary technical personnel in this field, other drawings can also be obtained according to these drawings without paying creative effort.
In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical schemes in the embodiments of the present invention will be clearly and completely described below with reference to the attached drawings in the embodiments of the present invention. Obviously, the embodiment described in the following is only part of the embodiment of the invention, rather than all the embodiments. Based on the embodiments of the invention, all other embodiments obtained by ordinary technicians in this field without creative labor shall fall within the scope of the protection of the invention.
The technical scheme of the invention is further explained in combination with the attached drawings and through specific embodiments.
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For technical personnel in this field, it is obvious that the invention is not limited to the details of the above embodiments, and it can be realized in other specific forms without deviating from the spirit or basic characteristics of the invention. Therefore, no matter from which point of view the embodiments are to be regarded in all respects as illustrative and not restrictive, and the scope of the invention is defined by the attached claims rather than the foregoing description, which are therefore intended to fall within the scope of the attached claims. All changes within the meaning and scope of the same requirements are included in the present invention. Any reference marks in the claims should not be regarded as limiting the claims.
The above embodiments are used only to describe the technical scheme of the invention, not to restrict it; Although the invention is described in detail according to the above embodiments, the ordinary technicians in this field should understand that: it is still possible to modify the technical scheme recorded in the above embodiments, or equivalently replace some of the technical features; However, these modifications or replacements do not deviate the essence of the corresponding technical scheme from the spirit and scope of the technical scheme of each embodiment of the invention.
Number | Date | Country | Kind |
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202010592856.8 | Jun 2020 | CN | national |
Filing Document | Filing Date | Country | Kind |
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PCT/CN2021/101919 | 6/23/2021 | WO |