KR20170029980A - Apparatus and method for measuring electrical resistivity - Google Patents
Apparatus and method for measuring electrical resistivity Download PDFInfo
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- KR20170029980A KR20170029980A KR1020150127240A KR20150127240A KR20170029980A KR 20170029980 A KR20170029980 A KR 20170029980A KR 1020150127240 A KR1020150127240 A KR 1020150127240A KR 20150127240 A KR20150127240 A KR 20150127240A KR 20170029980 A KR20170029980 A KR 20170029980A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/08—Measuring resistance by measuring both voltage and current
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C19/00—Electric signal transmission systems
- G08C19/02—Electric signal transmission systems in which the signal transmitted is magnitude of current or voltage
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Abstract
The present invention relates to an apparatus and method for measuring electrical resistivity, comprising a remote terminal unit for controlling an electric potential measurement operation of a plurality of electrode units installed on a ground and measuring an electrical resistivity, And a potential measuring unit which is provided for each of the electrode units and measures a potential value of a neighboring electrode unit paired with the corresponding electrode unit according to a measurement command transmitted from the remote terminal unit do.
Description
The present invention relates to an apparatus for measuring electrical resistivity and a method thereof, and more particularly, to an electrical resistivity measuring apparatus and method for measuring electrical resistivity of a ground using only a minimum number of wires regardless of the number of electrodes.
The electrical resistivity is a characteristic of the material that resists the current flow. Through this, it is possible to grasp the geological structure of the fault, fracture zone, lime cavity, analysis of environmental pollution, availability of resources and to detect the leakage area of dam and bank And so on.
The basic principle of the electrical resistivity measurement is to measure the potential difference measured at a pair of potential electrodes at a plurality of locations after flowing a current through a pair of current electrodes and to measure the apparent resistivity The specific resistivity of the soil can be obtained by calculating the specific resistivity data obtained by using the resistivity calculation formula for the uniform medium based on the measured values.
The electrical resistivity measuring apparatus generally comprises a transmitting apparatus for amplifying and transmitting a DC 12 V power source to 200 to 400 V high-voltage direct current, and an AD converter for measuring a potential difference between a transmission current and a potential electrode pair. The electrical resistivity survey is carried out after several electrodes are installed on the ground and connected to all the multi-core wires. The multi-core wires connecting multiple electrodes at the same time are connected to the automatic electrode switching device, The current injection electrode and the potential measurement electrode are connected to the transmission device and the AD conversion device. That is, the electrical resistivity measuring apparatus which is commonly used is manufactured by integrating a transmitting apparatus, an A / D converting apparatus, and an automatic electrode switching apparatus, or a separate automatic switching apparatus.
The depth of exploration of the electrical resistivity measuring apparatus is determined by the interval between the electrodes to be installed. Therefore, in order to probe deep depth, at least 20 electrodes must be installed and very heavy multi-core wires must be used. In addition, as disclosed in Korean Patent Laid-Open No. 10-2000-0043352, there is a problem in that, when the electrical resistivity measuring apparatus is separately provided with a transmitting and receiving unit, it must be moved each time. Also, in the case of the electrical resistivity measuring device based on the sensor network, if the distance between the sensors is widened in a place where the terrain undulation is severe, a wireless communication shade may exist, so that it is troublesome to install a separate antenna.
In this connection, Korean Patent Laid-Open No. 10-2011-0046915 discloses a " electrical resistivity survey system based on a sensor network ".
Disclosure of Invention Technical Problem [8] The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a method of measuring an electrical resistivity of an underground material by using three wires for measurement and three wires for communication, And an object of the present invention is to provide an apparatus for measuring electrical resistivity and a method thereof.
It is another object of the present invention to provide an apparatus for measuring electrical resistivity and a method for independently operating an apparatus for measuring potential values on electrodes.
According to an aspect of the present invention, there is provided an apparatus for measuring electrical resistivity, comprising: a remote terminal unit for controlling an electrical potential measurement operation of a plurality of electrode units installed on a ground; A current supply unit for supplying a current to the electrode unit according to a measurement command transmitted from the remote terminal unit; And a potential measuring unit that is provided for each of the electrode units and measures a potential value of a corresponding electrode unit and a neighboring electrode unit paired with the corresponding electrode unit according to a measurement command transmitted from the remote terminal unit.
In addition, the remote terminal unit, the current supply unit, and the potential measurement unit may be provided at different positions from each other, and the current supply unit and the potential measurement unit may be disposed at different positions from each other, And a plurality of potential measuring units are interconnected through a third wire to measure a potential value of the neighboring electrode unit.
The remote terminal unit, the current supply unit, and the potential measurement unit may be connected to each other through a fourth wire, a fifth wire, and a sixth wire to control measurement of the potential of the electrode unit, , Measurement data transmission and measurement data reception are performed.
The remote terminal unit may further include a command transmission unit for transmitting a measurement command to the electric current supply unit and the electric potential measurement unit to measure a voltage value of the electrode unit for a predetermined time period when an operation is requested by an administrator; A potential value collecting unit collecting current information from the current supply unit according to the transmitted measurement command and collecting a potential value of the corresponding electrode unit and the neighboring electrode unit from the potential measurement unit; And an electrical resistivity measuring unit for measuring the electrical resistivity based on the collected current information and a potential difference between the corresponding electrode unit and the neighboring electrode unit.
In addition, the current supply unit may include: A first command receiving unit receiving a measurement command transmitted from the remote terminal unit; A supply unit for supplying a current to the electrode unit for a predetermined time; And a first transmission unit for transmitting current information on a current supplied during a predetermined time to the remote terminal unit.
Also, the potential measuring unit may include: a second command receiving unit receiving a measurement command transmitted from the remote terminal unit; A control unit for generating a control command for measuring a potential value of the electrode unit by a received measurement command; An AD converter for converting an analog signal into a digital signal according to a control command of the controller; And a second transfer unit for transferring the potential value of the electrode unit and the neighboring electrode unit measured for a preset time to the remote terminal unit according to a control command of the control unit.
When the control unit is driven in a current connection mode according to a control command of the control unit, a first electric wire or a second electric wire supplying a current is connected to the electrode unit to supply current to the electrode unit, Further comprising a relay switch unit for connecting the electrode unit and the neighboring electrode unit to the AD conversion unit to measure a potential value of the electrode unit and the neighboring electrode unit when driven in a potential measurement mode, When the control command for driving the current connection mode is input from the control unit, the switch unit other than the first switch unit or the second switch unit connected to the current supply unit is opened to transfer the current to the electrode unit, When the control command for driving the measurement mode is input, the third switch unit connected to the A / D conversion unit, and the first switch unit and the second switch unit except for the fourth switch unit connected to the adjacent electrode unit paired with the electrode unit are opened to change the potential value of the electrode unit and the potential value of the neighboring electrode unit And performing the measurement operation.
The electric current supplying unit and the electric potential measuring unit may be connected by a first electric wire and a second electric wire, the first electric wire may be connected to a first switch unit included in a relay switch unit of the electric potential measuring unit, The AD converter of the potential measuring unit is connected to the third switch unit and the fourth switch unit included in the relay switch unit, and the first switch unit, the second switch unit, The switch unit and the third switch unit are connected to the electrode unit, and the fourth switch unit is connected to the neighboring electrode unit by the third electric wire.
According to an aspect of the present invention, there is provided a method for measuring electrical resistivity, comprising the steps of: transmitting, by a remote terminal unit, a measurement command for measuring a potential value of a plurality of electrode units provided on a ground to a current supply unit and a potential measurement unit step; Supplying a current to the electrode unit according to a measurement command transmitted from the remote terminal unit by the current supply unit; Measuring a potential value of a neighboring electrode unit that is provided for each electrode unit and is paired with the corresponding electrode unit according to a measurement command transmitted from the remote terminal unit; And measuring an electrical resistivity on the basis of a potential difference between the electrode unit and the neighboring electrode unit by the remote terminal unit.
The step of supplying a current to the electrode unit according to a measurement command transmitted from the remote terminal unit may include receiving a measurement command transmitted from the remote terminal unit, Supplying a current to the electrode portion for a predetermined time; And transmitting current information on a current supplied for a preset time to the remote terminal unit.
The step of measuring the potential value of the electrode unit and a neighboring electrode unit paired with the electrode unit according to a measurement command transmitted from the remote terminal unit may include measuring a value transmitted from the remote terminal unit, Receiving a command to generate a control command for measuring a potential value of the electrode portion; Converting an analog signal into a digital signal according to a control command; Driving at least one of a current connection mode and a potential measurement mode according to a control command to measure a potential value of the electrode unit and the neighboring electrode unit; And transmitting the measured potential of the electrode unit and the neighboring electrode unit to the remote terminal unit for a preset time according to the control command.
The apparatus and method for measuring electrical resistivity according to the present invention having the above-described structure can reduce the size and weight of a device by using only three wires for measurement and three wires for communication, not a multi-core wire.
Further, according to the present invention, since the device for measuring the potential value provided for each electrode operates independently, it is possible to measure data at the same time, so that the measurement time can be remarkably shortened.
1 is a view for explaining a configuration of an electrical resistivity measuring apparatus according to the present invention.
2 is a view for explaining a detailed configuration of a remote terminal unit employed in the electrical resistivity measuring apparatus according to the present invention.
3 is a view for explaining a detailed configuration of a current supplying part employed in the electrical resistivity measuring apparatus according to the present invention.
4 is a view for explaining a detailed configuration of a potential measuring unit employed in the electrical resistivity measuring apparatus according to the present invention.
FIG. 5 is a view for explaining the detailed configuration of a relay switch unit employed in the potential measurement unit according to FIG. 4 and the configuration of electric wires.
6 is a view for explaining the procedure of the electrical resistivity measurement method according to the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings in order to facilitate a person skilled in the art to easily carry out the technical idea of the present invention. . First, in adding reference numerals to the constituent elements of the drawings, it should be noted that the same constituent elements are denoted by the same reference numerals whenever possible even if they are displayed on other drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.
First, the electrical resistivity measuring apparatus according to the present invention is connected to a plurality of electrodes installed on the ground with a total of six wires for three electric wires for measurement of electric potential and three electric wires for communication connection throughout the measurement period, The resistivity of the ground can be measured by the central control method without movement. Here, the wire connection structure of the electrical resistivity measuring apparatus will be described in detail later.
1 is a view for explaining a configuration of an electrical resistivity measuring apparatus according to the present invention.
1, the electrical
The
The
The
The
The potential measuring unit is installed in each of the
The
The
The
2 is a view for explaining a detailed configuration of a remote terminal unit employed in the electrical resistivity measuring apparatus according to the present invention.
Referring to FIG. 2, the
The
The potential
The electrical
3 is a view for explaining a detailed configuration of a current supplying part employed in the electrical resistivity measuring apparatus according to the present invention.
3, the
The first
The
The
4 is a view for explaining a detailed configuration of a potential measuring unit employed in the electrical resistivity measuring apparatus according to the present invention.
4, the
The second
The
The
The
The
FIG. 5 is a view for explaining the detailed configuration of a relay switch unit employed in the potential measurement unit according to FIG. 4 and the configuration of electric wires.
5, the
More specifically, when a control command for driving the current connection mode is input from the control unit, the
The
As described above, the electrical resistivity measuring apparatus according to the present invention comprises six wires in total, three wires for potential measurement and three wires for communication connection. The supply unit and the potential measuring unit are connected by a first wire C1 and a second wire C2. The first wire is connected to the first switch unit A included in the relay switch unit of the potential measuring unit. The
6 is a view for explaining the procedure of the electrical resistivity measurement method according to the present invention.
Referring to FIG. 6, the electrical resistivity measuring method according to the present invention uses the electrical resistivity measuring apparatus described above, and a repeated description will be omitted.
First, a measurement command for measuring the potential values of a plurality of electrode units provided on the ground is transmitted to the current supply unit and the potential measurement unit by the remote terminal unit (S100).
In operation S100, when an operation is requested from the manager, the measurement unit transmits a measurement command to the current supply unit and the potential measurement unit to measure the potential value of the electrode unit for a predetermined time. As a result, the current supply unit and the potential measurement unit are changed from the command standby mode to the execution mode.
Next, the current supply unit supplies a current to the electrode unit according to the measurement command transmitted from the remote terminal unit (S200).
In step S200, upon receipt of the measurement command transmitted from the remote terminal unit, current information on the current supplied to the electrode unit is transmitted to the remote terminal unit for a preset time.
Next, in accordance with a measurement command transmitted from the remote terminal unit, a potential value of a neighboring electrode unit paired with the corresponding electrode unit is measured (S300).
In step S300, a measurement command transmitted from the remote terminal unit is received, a control command for measuring the potential value of the electrode unit is generated, and an analog signal of the electrode unit and neighboring electrode potentials is converted into a digital signal And transmits the potential values of the measured electrode portion and neighboring electrode portions for a preset time to the remote terminal unit according to the control command.
If the control command for driving the potential measurement mode is inputted in step S300, the third switch unit connected to the AD converter for converting the analog signal into the digital signal, the neighboring electrode unit connected to the AD converter unit, The first switch unit and the second switch unit except the connected fourth switch unit are opened to measure the potential value of the electrode unit and the potential value of the neighboring electrode unit.
If the control command for driving the potential measurement mode is inputted in step S300, the third switch part connected to the AD conversion part and the fourth switch part connected to the AD conversion part and connected to the neighboring electrode part paired with the electrode part are excluded The first switch unit and the second switch unit are opened to measure the potential value of the electrode unit and the potential value of the neighboring electrode unit.
Finally, the electrical resistance is measured on the basis of the potential difference between the electrode portion and the adjacent electrode portion by the remote terminal (S400). In step S400, the remote terminal collects the current information collected from the current supply part and the potential value collected from the potential measuring part of each electrode part, calculates the apparent resistivity for each position based on the collected current information, and then measures the electrical resistivity.
After the step S400, the current supply unit and the potential measuring unit are changed to the command standby mode in the execution mode, and are ready for the new measurement.
As described above, in the apparatus and method for measuring electrical resistivity according to the present invention, by using only three wires for measurement and three wires for communication, it is possible to reduce the number of wires significantly compared to the prior art in which the number of wires has to be increased according to the number of electrodes It is possible to provide a compact and lightweight equipment. Thus, the manufacturing cost can be reduced and the labor cost can be reduced.
Further, the present invention makes it possible to perform simultaneous data measurement much more than conventional multi-channel measurement systems using 4X (the number of electrodes) relays while increasing the number of AD converters.
Further, since the potential measuring unit operates independently for each electrode unit, the present invention can shorten the time for measuring the potential value.
While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but many variations and modifications may be made without departing from the scope of the present invention. It will be understood that the invention may be practiced.
100: Electrical resistivity measuring device
110: remote terminal unit
120:
130: potential measuring unit
Claims (11)
A remote terminal unit for controlling an electric potential measurement operation of a plurality of electrode units installed on the ground to measure electrical resistivity;
A current supply unit for supplying a current to the electrode unit according to a measurement command transmitted from the remote terminal unit; And
A potential measuring unit that is provided for each of the electrode units and measures a potential value of a corresponding electrode unit and a neighboring electrode unit paired with the corresponding electrode unit according to a measurement command transmitted from the remote terminal unit;
And an electrical resistivity measuring device for measuring electrical resistivity.
The electric current supplying unit and the electric potential measuring unit may be disposed at different positions from each other, and the electric current supplying unit and the electric potential measuring unit may include a first electric wire and a second electric wire, And a plurality of potential measuring units are interconnected via a third wire to measure a potential value of the neighboring electrode unit.
The remote terminal unit, the current supply unit, and the potential measuring unit are connected to each other through a fourth wire, a fifth wire and a sixth wire to control measurement of the potential of the electrode unit, Data transmission and measurement data reception are performed.
The remote terminal unit,
A command transmission unit for transmitting a measurement command to the electric current supply unit and the electric potential measurement unit to measure a electric potential value of the electrode unit for a predetermined time period when an operation is requested from an administrator;
A potential value collecting unit collecting current information from the current supply unit according to the transmitted measurement command and collecting a potential value of the corresponding electrode unit and the neighboring electrode unit from the potential measurement unit; And
An electrical resistivity measuring unit for measuring an electrical resistivity on the basis of the collected current information and a potential difference between the corresponding electrode unit and the neighboring electrode unit;
And an electrical resistivity measuring device for measuring electrical resistivity.
The current supply unit includes:
A first command receiving unit receiving a measurement command transmitted from the remote terminal unit;
A supply unit for supplying a current to the electrode unit for a predetermined time; And
A first transmission unit for transmitting current information on a current supplied during a predetermined time to the remote terminal unit;
And an electrical resistivity measuring device for measuring electrical resistivity.
Wherein the potential measuring unit comprises:
A second command receiving unit receiving a measurement command transmitted from the remote terminal unit;
A control unit for generating a control command for measuring a potential value of the electrode unit by a received measurement command;
An AD converter for converting an analog signal into a digital signal according to a control command of the controller; And
A second transfer unit for transferring a potential value of the electrode unit and the neighboring electrode unit measured for a preset time to the remote terminal unit according to a control command of the control unit;
And an electrical resistivity measuring device for measuring electrical resistivity.
A first electric wire or a second electric wire for supplying a current is connected to the electrode unit to supply current to the electrode unit when the control unit is driven in a current connection mode according to a control command of the control unit, Further comprising a relay switch unit for connecting the electrode unit and the neighboring electrode unit to the A / D converter unit to measure a potential value of the electrode unit and the neighboring electrode unit when driven in a measurement mode, When a control command for driving in the connection mode is inputted, the switch unit other than the first switch unit or the second switch unit connected to the current supply unit is opened to transmit the current to the electrode unit, When a control command for driving is input, the third switch unit connected to the AD conversion unit and the A / The first switch unit and the second switch unit except for the fourth switch unit connected to the electrode unit and connected to the adjacent electrode unit are opened to measure the potential value of the electrode unit and the potential value of the neighboring electrode unit Wherein the electrical resistivity measuring device performs an operation.
Wherein the electric current supplying unit and the electric potential measuring unit are connected by a first electric wire and a second electric wire, the first electric wire is connected to a first switch unit included in a relay switch unit of the electric potential measuring unit, And the AD converter of the potential measurement unit is connected to the third switch unit and the fourth switch unit included in the relay switch unit, and the first switch unit, the second switch unit, And the third switch unit is connected to the electrode unit, and the fourth switch unit is connected to the neighboring electrode unit by the third electric wire.
Transmitting a measurement command to a current supply unit and a potential measurement unit to measure a potential value of a plurality of electrode units installed on the ground by the remote terminal unit;
Supplying a current to the electrode unit according to a measurement command transmitted from the remote terminal unit by the current supply unit;
Measuring a potential value of a neighboring electrode unit that is provided for each electrode unit and is paired with the corresponding electrode unit according to a measurement command transmitted from the remote terminal unit; And
Measuring an electrical resistivity on the basis of a potential difference between the electrode unit and the neighboring electrode unit by the remote terminal unit;
Wherein the electrical resistivity measuring method comprises the steps of:
Wherein the step of supplying current to the electrode unit according to a measurement command transmitted from the remote terminal unit comprises:
Receiving a measurement command transmitted from the remote terminal unit;
Supplying a current to the electrode portion for a predetermined time; And
Transmitting current information on a current supplied for a predetermined time to the remote terminal unit;
Wherein the electrical resistivity measuring method comprises the steps of:
The step of measuring a potential value of a neighboring electrode unit paired with the electrode unit and the electrode unit according to a measurement command transmitted from the remote terminal unit,
Receiving a measurement command transmitted from the remote terminal unit and generating a control command for measuring a potential value of the electrode unit;
Converting an analog signal into a digital signal according to a control command;
Driving at least one of a current connection mode and a potential measurement mode according to a control command to measure a potential value of the electrode unit and the neighboring electrode unit; And
Transmitting a measured potential of the electrode unit and the neighboring electrode unit to the remote terminal unit for a preset time according to a control command;
Wherein the electrical resistivity measuring method comprises the steps of:
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102232914B1 (en) * | 2020-11-27 | 2021-03-26 | 한국지질자원연구원 | Apparatus and method for investigating electrical resistivity survey system platform |
| KR102561681B1 (en) * | 2022-11-25 | 2023-07-31 | (주)지오룩스 | Electrical resistivity survey apparatus associating with user terminal |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR102348422B1 (en) | 2021-07-26 | 2022-01-07 | 주식회사 뉴원 | Data collection device using earth resistance and its method |
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| US8019547B2 (en) | 2006-06-22 | 2011-09-13 | Bryant Consultants, Inc. | Remotely reconfigurable system for mapping subsurface geological anomalies |
| JP2015127701A (en) | 2013-11-29 | 2015-07-09 | 紘彬 吉田 | Electric survey method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR102232914B1 (en) * | 2020-11-27 | 2021-03-26 | 한국지질자원연구원 | Apparatus and method for investigating electrical resistivity survey system platform |
| KR102561681B1 (en) * | 2022-11-25 | 2023-07-31 | (주)지오룩스 | Electrical resistivity survey apparatus associating with user terminal |
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