Electrical exploration systems, methods, devices, and storage media

Abstract

The disclosure provides an electrical exploration system, method, device, equipment and storage medium, belonging to the technical field of exploration. The electrical exploration system comprises a control device, a transmitter and at least two receivers, each receiver having a plurality of measuring electrodes. On the one hand, a plurality of receivers are arranged, which can increase the number of measuring electrodes, and a larger number of measuring electrodes can obtain more geological data. On the other hand, the transmitter starts to transmit the measuring signal at the predetermined transmission time, each receiver starts to receive the response signal of the measuring signal at the predetermined receiving time, and the predetermined receiving time is not later than the predetermined transmission time. Each receiver can control the corresponding plurality of measuring electrodes to start receiving the response signal of the measuring signal at the same time as the transmitter starts transmitting the measuring signal or before the transmitter starts transmitting the measuring signal. The situation that the measuring electrodes of the receiver cannot receive the response signal can be reduced, and more geological data can be obtained.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of exploration, in particular to an electrical prospecting system, method, device and storage medium. BACKGROUND

[0002] Electrical prospecting is a kind of geophysical prospecting method based on the electrical property difference between underground rock and ore, which observes and studies the spatial and temporal distribution of electric field and electromagnetic field to carry out resource exploration and engineering investigation, so as to find useful mineral resources and solve geological problems such as engineering, environment and disaster.

[0003] In the related art, the electrical prospecting system includes a control device, a transmitter and a receiver including a plurality of measuring electrodes. The transmitter is configured to send a measurement signal to a measured area, the receiver is configured to receive a response signal of the measurement signal transmitted through the underground after receiving the measurement signal through the plurality of measuring electrodes, and send the received response signal to the control device. The control device is configured to process the response signal sent by the receiver to obtain geological data such as apparent resistivity.

[0004] In the process of implementing the present disclosure, the inventors found that the prior art at least has the following problems:

[0005] The number of measuring electrodes of a single receiver is limited, and there may be a case that the response signal of the measurement signal cannot be received by the multiple measuring electrodes of the receiver, so that the obtained geological data is less and cannot accurately reflect the geological conditions of the measured area. SUMMARY

[0006] The electrical prospecting system, method, device and storage medium provided by the embodiments of the present disclosure can obtain more geological data, and accurately reflect the geological conditions of the measured area. The technical solutions are as follows:

[0007] In a first aspect, an electrical prospecting system is provided, which includes a control device, a transmitter and at least two receivers. Each receiver includes a plurality of measuring electrodes. The control device is configured to send a first control command to the transmitter, the first control command being used to instruct the transmitter to start transmitting a measurement signal to the measured area at a predetermined transmission time. The control device is further configured to send a second control command to each receiver, the second control command being used to instruct each receiver to control the corresponding plurality of measuring electrodes to start receiving a response signal of the measurement signal at a predetermined receiving time, the predetermined receiving time being no later than the predetermined transmission time. The transmitter is configured to transmit the measurement signal according to the first control command. The receiver is configured to control the corresponding plurality of measuring electrodes to receive the response signal of the measurement signal according to the second control command, and send the received response signal to the control device.

[0008] Optionally, the control device, the transmitter and the receivers each comprise a positioning unit; the control device is configured to determine a current time by the built-in positioning unit, and generate the predetermined transmission time and the predetermined reception time according to the current time; the transmitter is configured to determine a first time, and start transmitting the measurement signal according to the first time and the predetermined transmission time, the first time being a real-time UTC time obtained by the built-in positioning unit of the transmitter, or a UTC time obtained by the built-in positioning unit of the transmitter when the transmitter receives the first control command; each of the receivers is configured to determine a second time, and control the corresponding plurality of measurement electrodes to start receiving the response signal according to the second time and the predetermined reception time, the second time being a real-time UTC time obtained by the built-in positioning unit of each of the receivers, or a UTC time obtained by the built-in positioning unit of each of the receivers when each of the receivers receives the second control command.

[0009] Optionally, each of the receivers is further configured to determine a first reception time from the time when the corresponding plurality of measurement electrodes start receiving the response signal to the measurement signal, the first reception time being the time when a first measurement electrode starts receiving the response signal to the measurement signal, the first measurement electrode being a measurement electrode that starts receiving the response signal to the measurement signal earliest among the plurality of measurement electrodes; calculate a reception time difference of a second measurement electrode according to the first reception time and a second reception time, the second reception time being the time when the second measurement electrode starts receiving the response signal to the measurement signal, the second measurement electrode being one of the plurality of measurement electrodes other than the first measurement electrode; and perform time compensation on the predetermined reception time corresponding to the second measurement electrode according to the calculated reception time difference of the second measurement electrode.

[0010] Optionally, each of the receivers further comprises a channel switching unit, and each of the receivers is further configured to obtain first position parameters of the corresponding plurality of measurement electrodes by controlling the channel switching unit, and send the first position parameters of the plurality of measurement electrodes to the control device; and the control device is configured to calibrate second position parameters of the plurality of measurement electrodes pre-stored according to the first position parameters of the plurality of measurement electrodes.

[0011] In a second aspect, an electrical prospecting method is provided, and the method comprises:

[0012] The control device sends a first control command to the transmitter, and a second control command to at least two receivers, the first control command is used to instruct the transmitter to transmit a measurement signal to a measured area at a predetermined transmission time, the second control command is used to instruct each receiver to control a plurality of corresponding measurement electrodes to start receiving a response signal of the measurement signal at a predetermined receiving time, the predetermined receiving time is not later than the predetermined transmission time; the control device receives the response signal sent by the receiver, the response signal is the response signal of the measurement signal received by the corresponding plurality of measurement electrodes of the receiver according to the second control command, and the measurement signal is transmitted by the transmitter according to the first control command.

[0013] Optionally, the method further comprises:

[0014] The control device determines the current time through the built-in positioning unit, and generates the predetermined transmission time and the predetermined receiving time according to the current time; the transmitter is used to start transmitting the measurement signal according to the first time and the predetermined transmission time, the first time is the UTC time acquired by the transmitter through the built-in positioning unit in real time, or is the UTC time acquired by the transmitter through the built-in positioning unit when the first control command is received; each receiver is used to control the corresponding plurality of measurement electrodes to start receiving the response signal of the measurement signal according to the second time and the predetermined receiving time, the second time is the real-time UTC time acquired by each receiver through the built-in positioning unit, or is the UTC time acquired by each receiver through the built-in positioning unit when the second control command is received.

[0015] Optionally, the method further comprises:

[0016] Each receiver determines a first receiving time from the time when the corresponding plurality of measurement electrodes start receiving the response signal of the measurement signal, the first receiving time is the time when the first measurement electrode starts receiving the response signal of the measurement signal, and the first measurement electrode is the measurement electrode that starts receiving the response signal of the measurement signal first among the plurality of measurement electrodes; according to the first receiving time and a second receiving time, a receiving time difference of a second measurement electrode is calculated, the second receiving time is the time when the second measurement electrode starts receiving the response signal of the measurement signal, and the second measurement electrode is one of the plurality of measurement electrodes except the first measurement electrode among the plurality of measurement electrodes; the predetermined receiving time corresponding to the second measurement electrode is time-compensated according to the calculated receiving time difference of the second measurement electrode.

[0017] Optionally, the method further comprises:

[0018] The control device receives first position parameters of a plurality of corresponding measuring electrodes sent by each of the receivers; and calibrates second position parameters of the plurality of measuring electrodes pre-stored according to the first position parameters of the plurality of measuring electrodes.

[0019] In a third aspect, a computer device is provided, comprising: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to execute the method of the second aspect.

[0020] In a fourth aspect, a computer-readable storage medium is provided, which, when instructions in the computer-readable storage medium are executed by a processor of a computer device, enables the computer device to execute the method of the second aspect.

[0021] The technical scheme provided by the embodiments of the present disclosure has the following beneficial effects:

[0022] In the embodiments of the present disclosure, the electrical prospecting system comprises a control device, a transmitter and at least two receivers, and each receiver has a plurality of measuring electrodes. On the one hand, by arranging a plurality of receivers, the number of measuring electrodes can be increased, so that more geological data can be obtained through a larger number of measuring electrodes. On the other hand, the transmitter starts to transmit a measuring signal at a predetermined transmission time, each receiver starts to receive a response signal of the measuring signal at a predetermined receiving time, and the predetermined receiving time is not later than the predetermined transmission time. Therefore, each receiver can control the corresponding plurality of measuring electrodes to start receiving the response signal of the measuring signal when the transmitter starts to transmit the measuring signal; or each receiver can control the corresponding plurality of measuring electrodes to start receiving the response signal of the measuring signal before the transmitter starts to transmit the measuring signal. In this way, the situation that each measuring electrode of a receiver cannot receive the response signal of the measuring signal can be reduced, more geological data can be obtained, and the geological conditions of the measured area can be accurately reflected through the obtained more geological data. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme in the embodiments of the present disclosure, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative labor.

[0024] Figure 1 is a structural schematic diagram of an electrical prospecting system provided by an embodiment of the present disclosure;

[0025] Figure 2 is a structural schematic diagram of another electrical prospecting system provided by an embodiment of the present disclosure;

[0026] Figure 3 is a time compensation schematic diagram provided by an embodiment of the present disclosure;

[0027] Figure 4 is a structure schematic diagram of a receiver provided by an embodiment of the present disclosure;

[0028] Figure 5 is a structure schematic diagram of a control device provided by an embodiment of the present disclosure;

[0029] Figure 6 is a flowchart of an electrical prospecting method provided by an embodiment of the present disclosure;

[0030] Figure 7 is a structure block diagram of a computer device provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the present disclosure clearer, the following will further describe the embodiments of the present disclosure in combination with the drawings.

[0032] Figure 1 is a structure schematic diagram of an electrical prospecting system provided by an embodiment of the present disclosure. Referring to Figure 1 , the electrical prospecting system comprises a control device 10, a transmitter 20 and at least two receivers 30, each receiver 30 having a plurality of measuring electrodes 31.

[0033] The plurality of measuring electrodes 31 of the at least two receivers 30 are uniformly distributed around the measured area.

[0034] In some examples, each measuring electrode 31 adopts a ring-shaped distribution manner. For example, a reference point is selected in the measured area, and a plurality of measuring electrodes 31 are arranged at intervals on a circle with a radius of 50 meters, 100 meters or 150 meters from the reference point, and the central angle formed by any two adjacent measuring electrodes 31 on the same circle is 5°. Exemplarily, the plurality of measuring electrodes 31 of each receiver 30 are arranged in a circle, or the plurality of measuring electrodes 31 of a plurality of receivers 30 are arranged on the same circle.

[0035] In other examples, each measuring electrode 31 adopts a radial distribution manner. For example, a reference point is selected in the measured area, and a plurality of measuring electrodes 31 are arranged at intervals along a line in three directions of the reference point. Exemplarily, the interval distance between each measuring electrode 31 in the same direction is 5 meters. Exemplarily, a plurality of measuring electrodes 31 of one receiver 30 are arranged in one direction of the reference point, or a plurality of measuring electrodes 31 of a plurality of receivers 30 are arranged in the same direction of the reference point.

[0036] In yet some examples, the measurement electrodes 31 are arranged in a grid manner. For example, a reference point is selected in the measured area, and any straight line passing through the reference point is taken as a reference line. A plurality of measurement electrodes 31 are arranged on a plurality of parallel lines and a plurality of vertical lines of the reference line. The interval distance between any two adjacent parallel lines, the interval distance between any two adjacent vertical lines, and the interval distance between any two adjacent receivers 30 are all equal. For example, a plurality of measurement electrodes 31 of one receiver 30 are arranged on the parallel lines or the vertical lines of each reference line, or a plurality of measurement electrodes 31 of a plurality of receivers 30 are arranged on the parallel lines or the vertical lines of each reference line.

[0037] The number of arranged measurement electrodes 31, the interval distance between the measurement electrodes 31, etc. can be adjusted according to the actual terrain around the measured area. For example, the measurement electrodes 31 are arranged to avoid rivers, ponds, etc.

[0038] By uniformly arranging a plurality of measurement electrodes of a plurality of receivers around the measured area, on the one hand, more response signals of the measurement signals can be obtained, and on the other hand, the detection area of the response signals can be increased.

[0039] The transmitter 20 can be arranged according to actual needs, as long as the plurality of measurement electrodes of each receiver 30 can receive the response signals.

[0040] The control device 10 is configured to send a first control command to the transmitter 20, the first control command being used to instruct the transmitter 20 to start transmitting the measurement signal to the measured area at a predetermined transmission time. The first control command includes transmission time information, which is used to indicate the predetermined transmission time. For example, the transmission time information includes UTC time or a set time length.

[0041] The transmitter 20 is configured to transmit the measurement signal according to the first control command.

[0042] In some embodiments, the first control command sent by the control device 10 to the transmitter 20 further includes parameter information of the measurement signal. The transmitter 20 can generate the measurement signal according to the received parameter information of the measurement signal, and start transmitting the measurement signal to the measured area according to the first control command.

[0043] In other embodiments, the first control command sent by the control device 10 to the transmitter 20 does not include the parameter information of the measurement signal. The transmitter 20 can generate the measurement signal according to the pre-stored parameter information of the measurement signal, and start transmitting the measurement signal to the measured area according to the first control command.

[0044] Exemplarily, the measurement signal is a pseudo-random sequence, for example, an M sequence. Parameter information of the pseudo-random sequence includes a pseudo-random sequence polynomial and a symbol length, etc. The formula of the pseudo-random sequence polynomial is as follows: i is the order of the pseudo-random polynomial. The symbol length is the clock period of the pseudo-random sequence.

[0045] Since the pseudo-random sequence has good autocorrelation characteristics similar to white noise and anti-interference ability, using the pseudo-random sequence as the measurement signal can improve the anti-interference of the measurement signal.

[0046] The control device 10 is also configured to send a second control command to each receiver 30, the second control command being used to instruct each receiver 30 to control the corresponding plurality of measurement electrodes 31 to start receiving the response signal of the measurement signal at a predetermined receiving time. The second control command includes receiving time information, which indicates the predetermined receiving time. Exemplarily, the receiving time information includes UTC (Coordinated Universal Time) time or a set time length. The predetermined receiving time is not later than the predetermined transmitting time.

[0047] The receiver 30 is configured to control the corresponding plurality of measurement electrodes 31 to start receiving the response signal of the measurement signal at the predetermined receiving time according to the second control command, and send the received response signal to the control device 10.

[0048] In some examples, after each receiver 30 obtains the response signal received by the corresponding plurality of measurement electrodes 31, the plurality of response signals are subjected to data processing to obtain geological data, and then the geological data is sent to the control device 10. The control device 10 stores the received geological data in a database.

[0049] In other examples, each receiver 30 directly sends the received plurality of response signals to the control device 10, and the control device 10 performs data processing to obtain geological data, and then stores the geological data in a database.

[0050] In the embodiments of the present disclosure, the geological data includes apparent resistivity and phase parameters with geophysical significance.

[0051] Exemplarily, the process of data processing on the response signal includes obtaining an impulse response function from the response signal, and obtaining the apparent resistivity and phase parameters through fast Fourier transform, etc.

[0052] In the embodiments of the present disclosure, the electrical prospecting system comprises a control device, a transmitter and at least two receivers, each receiver having a plurality of measuring electrodes. In one aspect, by arranging a plurality of receivers, the number of measuring electrodes can be increased, so that more geological data can be obtained through a larger number of measuring electrodes. On the other hand, the transmitter starts to transmit a measuring signal at a predetermined transmission time, each receiver starts to receive a response signal of the measuring signal at a predetermined receiving time, and the predetermined receiving time is not later than the predetermined transmission time. Therefore, each receiver can control the corresponding plurality of measuring electrodes to start receiving the response signal of the measuring signal when the transmitter starts to transmit the measuring signal, or each receiver can control the corresponding plurality of measuring electrodes to start receiving the response signal of the measuring signal before the transmitter starts to transmit the measuring signal. In this way, the situation that each measuring electrode of the receiver cannot receive the response signal of the measuring signal can be reduced, more geological data can be obtained, and the geological conditions of the measured area can be accurately reflected through the obtained more geological data.

[0053] Figure 2 is another structural schematic diagram of an electrical prospecting system provided by the embodiments of the present disclosure. As shown in Figure 2 , the system comprises a control device 10, a transmitter 20 and at least two receivers 30. Among them, the control device 10, the transmitter 20 and the at least two receivers 30 all comprise a wireless communication unit 40. The transmitter 20 and the plurality of receivers 30 are respectively correspondingly provided with a controller. The controller 21 of the transmitter 20 communicates with the control device 10 through the wireless communication unit 40 built in the transmitter, and the controller 31 of the receiver 30 communicates with the control device 10 through the wireless communication unit 40 built in the receiver 30.

[0054] Compared with wired communication, for example, the control device 10 communicates with the transmitting center and the control device 10 communicates with the at least two receivers 30 through the serial communication module, wireless communication has the advantages of fast data transmission rate, long data transmission distance and high data transmission reliability. Exemplarily, the wireless communication unit 40 is a 5G communication module.

[0055] Optionally, as Figure 2As shown, the electrical prospecting system further comprises a plurality of positioning units 50, and the control device 10, the transmitter 20 and the at least two receivers 30 each comprise a positioning unit 50. The positioning unit 50 built-in the transmitter 20 is connected with the controller 21 of the transmitter 20. The positioning unit 50 built-in the receiver 30 is connected with the controller 32 of the receiver 30. Exemplarily, the positioning unit can be a GPS (Global Positioning System), a BDNS (BeiDou Navigation Satellite System), a GSNS (Galileo satellite navigation system), a GNSS (Global Navigation Satellite System) and the like. The positioning unit 50 can output a standard UTC time according to a received position signal.

[0056] The control device 10 is configured to determine a current time through the built-in positioning unit 50, and generate a predetermined transmission time and a predetermined receiving time according to the current time. The predetermined transmission time and the predetermined receiving time are both later than the current time.

[0057] In some examples, a first set time length is added to the current time to obtain the time indicated by the predetermined transmission time information. A second set time length is added to the current time to obtain the predetermined receiving time information. The specific values of the first set time length and the second set time length can be set according to actual needs.

[0058] Optionally, the first set time length is greater than or equal to the second set time length. That is, the predetermined receiving time is not later than the predetermined transmission time.

[0059] The transmitter 20 is configured to determine a first time, and start transmitting the measurement signal according to the first time and the predetermined transmission time. The first time is a real-time UTC time obtained by the transmitter 20 through the built-in positioning unit 50, or is a UTC time obtained by the transmitter 20 through the built-in positioning unit 50 when the transmitter 20 receives the first control command.

[0060] Optionally, the transmitter 20 can adopt the following two ways to transmit the measurement signal:

[0061] Way one:

[0062] The first time is a real-time UTC time obtained by the transmitter 20 through the built-in positioning unit 50. The transmitter 20 is configured to compare the first time currently obtained and the predetermined transmission time in the first control command in real time; when the first time is consistent with the predetermined transmission time, the transmitter 20 starts to transmit the measurement signal to the measured area.

[0063] Method two:

[0064] The first time is the UTC time obtained by the built-in positioning unit 50 when the transmitter 20 receives the first control command. The transmitter 20 is configured to obtain the first time by the built-in positioning unit 50 in response to receiving the first control command; convert the time type of the first time and the time type of the predetermined transmission time in the first control command into the second type, and calculate the time difference in seconds; according to the calculated time difference, count up or down in seconds, and when the count value increases to the value of the time difference or the count value decreases to 0, start transmitting the measurement signal to the measured area. For example, the calculated time difference is 20 seconds, then the transmitter 20 starts counting from 0 in seconds, when the count value increases to 20, the transmitter 20 starts transmitting the measurement signal to the measured area; or count down from 20, when the count value decreases to 0, the transmitter 20 starts transmitting the measurement signal to the measured area. Exemplarily, the transmitter 20 can count by the timer of the built-in controller 21.

[0065] Each receiver 30 is configured to determine the second time, and control the corresponding plurality of measurement electrodes 31 to receive the response signal according to the second time and the predetermined receiving time. The second time is the real-time UTC time obtained by the built-in positioning unit 50 of each receiver 30, or the UTC time obtained by the built-in positioning unit 50 when each receiver 30 receives the second control command.

[0066] Optionally, the receiver 30 can control the corresponding plurality of measurement electrodes 31 to receive the response signal in the following two ways.

[0067] Method one:

[0068] The second time is the real-time UTC time obtained by the built-in positioning unit 50 of the receiver 30. The receiver 30 is configured to compare the currently obtained second time with the predetermined receiving time in the second control command in real time; when the second time is consistent with the predetermined receiving time, control the corresponding plurality of measurement electrodes 31 to receive the response signal.

[0069] Method two:

[0070] The second time is the UTC time obtained by the built-in positioning unit 50 when the second control command is received by the receiver 30. Each receiver 30 is configured to, in response to receiving the second control command, obtain the second time by the built-in positioning unit 50; convert the time type of the second time and the time type of the predetermined receiving time in the second control command into the second type, and calculate the time difference in seconds; count up or down according to the calculated time difference, and control the response signal of the corresponding multiple measurement electrodes 31 receiving the measurement signal when the count value increases to the value of the time difference or the count value decreases to 0. Exemplarily, the receiver 30 can count by the timer of the built-in controller 32.

[0071] Since the transmitter 20 and the at least two receivers 30 in the electrical prospecting system are distributed at different locations, in order to ensure that the measurement electrodes 31 of each receiver 30 can receive the response signal of the measurement signal transmitted by the transmitter 20, it is necessary to control the multiple measurement electrodes 31 of the at least two receivers 30 to start working synchronously with the transmitter 20, or to control the multiple measurement electrodes 31 of the at least two receivers 30 to start working ahead of the transmitter 20. By using the accurate UTC time obtained by the positioning unit 50, the transmitter 20 transmitting the measurement signal and the multiple measurement electrodes 31 of the receivers 30 receiving the response signal of the measurement signal can be controlled more accurately, and the situation that the receivers 30 cannot receive the response signal of the measurement signal is reduced to a certain extent. In this way, more geological data can be obtained as much as possible.

[0072] Optionally, in the embodiments of the present disclosure, each receiver 30 further comprises multiple sub-controllers, the number of sub-controllers is the same as the number of measurement electrodes 31 of the receiver 30, and one measurement electrode 31 is provided with one sub-controller. Under normal circumstances, the controller 32 of the receiver 30 controls multiple sub-controllers to start the corresponding measurement electrodes 31 to receive the response signal of the measurement signal at the same time.

[0073] In the process of actually using the electrical prospecting system for geological exploration, the response signals obtained by the multiple measurement electrodes 31 of the receiver 30 are different when the drilling depth is different, and the drilling depth is constantly changing. Therefore, it is necessary to control the multiple measurement electrodes 31 of each receiver 30 to receive the response signal of the measurement signal at the same time.

[0074] However, for some complex terrain areas, such as mine, railway along the line, high-voltage lines, factories and other areas with serious electromagnetic interference, the measurement electrode 31 receiving response signal will be disturbed, which may cause the time when multiple measurement electrodes 31 in the receiver 30 start to receive the response signal to be inconsistent. For example, there is a measurement electrode 31 that starts to receive the response signal 1 minute later than other measurement electrodes 31. This will cause the measurement electrode 31 to not receive the measurement signal response signal, or the received signal is the response signal of other non-measurement signals.

[0075] Therefore, the receiver 30 also needs to time compensate the predetermined receiving time of the corresponding multiple measurement electrodes 31. Figure 3 is a time compensation schematic diagram provided by an embodiment of the present disclosure. As shown in Figure 3 The transmitter 20 starts to transmit the measurement signal at Ts, and the measurement electrode 31A and the measurement electrode 31B of a certain receiver 30 start to receive the response signal of the measurement signal at Ta and Tb respectively. The receiver 30 judges whether the waveforms of the response signals received by multiple measurement electrodes 31 are synchronized at the time when the black dot in the figure is located, and synchronization means that the waveforms of the response signals received by multiple measurement electrodes are the same, and the high and low levels of the waveforms are consistent within a certain time range. If the response signal received by one measurement electrode is not synchronized with the response signals received by other measurement electrodes, the predetermined receiving time corresponding to the measurement electrode 31 is time compensated. For example, the sub-controller corresponding to the measurement electrode 31 is controlled to start to receive the response signal of the measurement signal in advance, so that the measurement electrode 31 can receive the response signal of the measurement signal synchronously with other measurement electrodes 31.

[0076] In some embodiments, each receiver 30 records the time when the corresponding plurality of measuring electrodes 31 starts to receive the response signal. The receiver 30 further determines, from the time when the corresponding plurality of measuring electrodes 31 starts to receive the response signal of the measurement signal, a first receiving time, the first receiving time being the time when the first measuring electrode starts to receive the response signal of the measurement signal, the first measuring electrode being the measuring electrode that starts to receive the response signal of the measurement signal first among the plurality of measuring electrodes 31. Then, the receiver 30 calculates, according to the first receiving time and a second receiving time, a receiving time difference of the second measuring electrode, the second receiving time being the time when the second measuring electrode starts to receive the response signal of the measurement signal, the second measuring electrode being one of the plurality of measuring electrodes 31 other than the first measuring electrode; and time compensates the predetermined receiving time corresponding to the second measuring electrode according to the calculated receiving time difference of the second measuring electrode. The time compensation means that the sub-controller corresponding to the second measuring electrode starts to turn on the second measuring electrode to receive the response signal in advance, i.e., the predetermined receiving time is advanced, and the time of starting to turn on in advance is the receiving time difference of the second measuring electrode. For example, the receiver 30 includes 16 measuring electrodes, the measuring electrode A among the 16 measuring electrodes 31 starts to receive the response signal of the measurement signal first at 10:00, and the measuring electrode B starts to receive the response signal of the measurement signal at 10:01. The receiving time difference of the measuring electrode B is 1 minute, and thus the sub-controller corresponding to the measuring electrode B starts to turn on the measuring electrode B to receive the response signal in advance by 1 minute.

[0077] By time compensating the predetermined receiving time of the measuring electrode, the plurality of measuring electrodes of each receiver can synchronously receive the response signal of the measurement signal, and thus the response signal of the measurement signal received by the plurality of measuring electrodes of each receiver is more accurate.

[0078] Optionally, the electrical prospecting system in the embodiments of the present disclosure further includes an ADC (Analog-to-digital converter) unit. Figure 4 is a structural schematic diagram of a receiver 30 provided by the embodiments of the present disclosure, referring to Figure 4 Each receiver 30 includes an ADC unit 33. Each ADC unit 33 includes a plurality of signal input ports and a plurality of signal output ports corresponding to the plurality of signal input ports respectively. The plurality of signal input ports correspond to the number of measuring electrodes 31 of the receiver 30, and one signal input port corresponds to one measuring electrode 31, and each signal output port corresponds to one input port of the controller 32. The ADC unit 33 is configured to convert the analog response signal received through the measuring electrode 31 into a digital signal.

[0079] Exemplarily, the main control chip of each controller 32 is an ARM Cortex-M4 processor, and each controller 32 supports 16 ADC channels for data acquisition. The ADC unit 33 is a 24-bit high-precision ADC sampling chip.

[0080] Optionally, as shown in FIG. 1, each receiver 30 further includes an analog front-end unit 34. The analog front-end unit 34 is arranged between the measurement electrode 31 and the ADC unit 33 of each receiver 30. Figure 4

[0081] The analog front-end unit 34 includes a first-order RC filter circuit, a programmable gain amplification circuit, and a second-order active low-pass filter circuit. The first-order RC filter circuit is used to filter out the interference small signals with higher frequencies or smaller amplitudes mixed in the response signals received by each measurement electrode 31. The programmable gain amplification circuit is used to amplify the peak value of the response signals filtered by the first-order RC filter circuit, so as to improve the resolution of the ADC unit 33. The second-order active low-pass filter circuit is used to filter out the interference small signals amplified by the programmable gain amplification circuit.

[0082] Since there are many unknown factors and potential external interferences in the underground medium, the response signals received by the receiver 30 after the test signals transmitted by the transmitter 20 to the measured area are transmitted through the underground may exist interference signals. Therefore, the analog front-end unit 34 is arranged between each measurement electrode 31 and the ADC unit 33 to filter the response signals of the measurement signals received by the measurement electrode 31, so that the receiver 30 can obtain more accurate multiple response signals.

[0083] Optionally, as shown in FIG. 1, each receiver 30 further includes a channel switching unit 35. The channel switching unit 35 is located between each measurement electrode 31 and the controller 32 of the receiver 30. Figure 4

[0084] The channel switching unit 35 includes a switch combination circuit, and each switch corresponds to a measurement electrode 31. The controller 32 can control the opening or closing of the switch in the channel switching unit 35 to disconnect or connect the measurement electrode 31 built-in the switch. When the controller 32 controls the switch corresponding to the measurement electrode 31 to be closed, the measurement electrode 31 is connected, and the controller 32 can obtain the response signal of the measurement signal received by the measurement electrode 31. When the controller 32 controls the switch corresponding to the measurement electrode 31 to be opened, the measurement electrode 31 is disconnected, and the controller 32 cannot obtain the response signal of the measurement signal received by the measurement electrode 31. Exemplarily, the switch in the channel switching unit 35 is a relay.

[0085] ​​By designing the channel switching unit 35 between each measuring electrode 31 and the controller 32, the response signal received by each measuring electrode 31 can be flexibly switched according to the actual needs of measurement. For example, only the multiple switches corresponding to the multiple measuring electrodes 31 close to the measured area are controlled to be closed.

[0086] Optionally, in the embodiments of the present disclosure, when the electrical prospecting system is used in the measured area for the first time, each receiver 30 is further configured to acquire first position parameters of the multiple measuring electrodes 31 by controlling the channel switching unit 35, and send the first position parameters of the multiple measuring electrodes 31 to the control device 10.

[0087] The control device 10 is configured to calibrate the second position parameters of the multiple measuring electrodes 31 pre-stored in the control device 10 according to the first position parameters of the multiple measuring electrodes 31. The first position parameters are the position parameters of the actual arrangement of the multiple measuring electrodes 31, and the second position parameters are the position parameters of the multiple measuring electrodes 31 pre-simulated by the control device 10 according to the terrain of the measured area and the like. When the first position parameters are inconsistent with the second position parameters, the second position parameters are modified according to the acquired first position parameters.

[0088] For example, the first position parameters and the second position parameters are position coordinates of the multiple measuring electrodes 31. Each receiver 30 is provided with a positioning unit on the multiple measuring electrodes 31, and each measuring electrode 31 acquires the first position parameters through the positioning unit. The positioning unit can be GPS, BDNS, GSNS, GNSS, and the like.

[0089] By calibrating the position parameters of the multiple measuring electrodes 31 through the channel switching unit 35, the control device 10 can acquire accurate position parameters of the actually arranged measuring electrodes 31. In this way, the control device 10 can obtain a more accurate apparent resistivity view according to the accurate position parameters of the multiple measuring electrodes 31 and the geological data acquired according to the corresponding position parameters, and further analyze the geological conditions of the measured area more accurately according to the apparent resistivity view.

[0090] Optionally, as shown in Figure 4 Each receiver 30 further includes a power management unit. The power management unit is configured to supply power to the wireless communication unit 40, the positioning unit 50, the controller 32, and the like of each receiver 30.

[0091] Figure 5 is a structural schematic diagram of a control device 10 provided by the embodiments of the present disclosure. As shown in Figure 5 The control device 10 includes a positioning unit 50, a wireless communication unit 40, a processor 11, and a memory 12. For example, the control device 10 is a PC (Personal Computer).

[0092] The positioning unit 50 of the control device 10 is configured to obtain the current UTC time, and the wireless communication unit 40 of the control device 10 is configured to communicate with the transmitter 20 and the at least two receivers 30. The memory 12 is configured to store a database of a plurality of response signals of the measurement signals transmitted by the at least two receivers 30, and the processor 11 is configured to perform data processing on the plurality of response signals of the measurement signals transmitted by the at least two receivers 30.

[0093] Figure 6 The method is performed by the control device, the transmitter and the at least two receivers in the method. Figure 1 Figure 6 The method comprises the following steps.

[0094] In step 601, the control device sends a first control command to the transmitter and a second control command to the at least two receivers, the first control command being used to instruct the transmitter to transmit a measurement signal to a measured area at a predetermined transmission time, and the second control command being used to instruct each receiver to control a plurality of measurement electrodes corresponding to the receiver to start receiving a response signal of the measurement signal at a predetermined receiving time, the predetermined receiving time being no later than the predetermined transmission time.

[0095] The transmission time information is included in the first control command, and the receiving time information is included in the second control command. For details of the transmission time information and the receiving time information, refer to the embodiment shown in Figure 1 , and detailed description is omitted here.

[0096] In step 602, the transmitter transmits the measurement signal according to the first control command.

[0097] For details of the measurement signal, refer to the embodiment shown in Figure 1 , and detailed description is omitted here.

[0098] In step 603, the receiver controls the plurality of measurement electrodes corresponding to the receiver to receive the response signal of the measurement signal according to the second control command.

[0099] In step 604, the receiver sends the received plurality of response signals of the measurement signal to the control device.

[0100] In step 605, the control device receives the response signal sent by the receiver.

[0101] The response signal is the response signal of the measurement signal received by the receiver according to the second control command, and the measurement signal is the measurement signal transmitted by the transmitter according to the first control command.

[0102] ​In the embodiments of the present disclosure, the electrical prospecting system comprises a control device, a transmitter and at least two receivers, each receiver having a plurality of measuring electrodes. In one aspect, by arranging a plurality of receivers, the number of measuring electrodes can be increased, so that more geological data can be obtained through a larger number of measuring electrodes. On the other hand, the transmitter starts to transmit the measuring signal at a predetermined transmission time, each receiver starts to receive the response signal of the measuring signal at a predetermined receiving time, and the predetermined receiving time is not later than the predetermined transmission time. Therefore, each receiver can control the corresponding plurality of measuring electrodes to start receiving the response signal of the measuring signal when the transmitter starts to transmit the measuring signal, or each receiver can control the corresponding plurality of measuring electrodes to start receiving the response signal of the measuring signal before the transmitter starts to transmit the measuring signal. In this way, the situation that each measuring electrode of the receiver cannot receive the response signal of the measuring signal can be reduced, more geological data can be obtained, and the geological conditions of the measured area can be accurately reflected through the obtained more geological data.

[0103] Optionally, in the embodiments of the present disclosure, the electrical prospecting method further comprises:

[0104] In the first step, the control device determines the current time through the built-in positioning unit, and generates the predetermined transmission time and the predetermined receiving time according to the current time. For related contents of determining the predetermined transmission time and the predetermined receiving time, please refer to the embodiments shown in Figure 2 The detailed description is omitted here.

[0105] In the second step, the transmitter starts to transmit the measuring signal according to the first time and the predetermined transmission time.

[0106] The first time is the UTC time obtained by the transmitter through the built-in positioning unit in real time, or the UTC time obtained by the transmitter through the built-in positioning unit when the first control command is received. For related contents of the transmitter transmitting the measuring signal, please refer to the embodiments shown in Figure 2 The detailed description is omitted here.

[0107] In the third step, each receiver controls the corresponding plurality of measuring electrodes to start receiving the response signal of the measuring signal according to the second time and the predetermined receiving time.

[0108] The second time is the UTC time obtained by each receiver through the built-in positioning unit in real time, or the UTC time obtained by each receiver through the built-in positioning unit when the second control command is received. For related contents of the receiver receiving the response signal of the measuring signal, please refer to the embodiments shown in Figure 2 The detailed description is omitted here.

[0109] Optionally, in the embodiments of the present disclosure, the electrical prospecting system further comprises:

[0110] The receiver determines a first receiving time from a time at which the corresponding plurality of measuring electrodes start to receive the response signal, the first receiving time being a time at which the first measuring electrode starts to receive the response signal of the measuring signal, the first measuring electrode being a measuring electrode that starts to receive the response signal of the measuring signal first among the plurality of measuring electrodes; calculates a receiving time difference of the second measuring electrode according to the first receiving time and a second receiving time, the second receiving time being a time at which the second measuring electrode starts to receive the response signal of the measuring signal, the second measuring electrode being one of the plurality of measuring electrodes other than the first measuring electrode; and performs time compensation on a predetermined receiving time corresponding to the second measuring electrode according to the calculated receiving time difference of the second measuring electrode.

[0111] For details of time compensation, refer to the embodiment shown in Figure 2 The detailed description is omitted here.

[0112] Optionally, in the embodiments of the present disclosure, before the first measurement in the measured area, the electrical prospecting method further comprises:

[0113] Each receiver acquires first position parameters of the corresponding plurality of measuring electrodes and sends the first position parameters of the plurality of measuring electrodes to the control device.

[0114] The control device receives the first position parameters of the corresponding plurality of measuring electrodes sent by each receiver; and calibrates the second position parameters of the plurality of measuring electrodes stored in advance according to the first position parameters of the plurality of measuring electrodes. For details of position parameter calibration, refer to the embodiment shown in Figure 2 The detailed description is omitted here.

[0115] Optionally, in the embodiments of the present disclosure, the electrical prospecting method further comprises: the control device judges the working states of the transmitter and the at least two receivers before sending the first control command and the second control command to the transmitter and the at least two receivers respectively.

[0116] The control device sends a request to the transmitter and the at least two receivers and judges the working states of the transmitter and the at least two receivers according to feedback information of the transmitter and the at least two receivers.

[0117] If the control device can receive the feedback information of the transmitter and the at least two receivers, it indicates that the communication between the control device and the transmitter and between the control device and the at least two receivers is normal; otherwise, it indicates that the wireless communication unit of the control device is faulty or the wireless communication unit of the transmitter is faulty or the wireless communication unit of the at least two receivers is faulty. At this time, the control device prompts an alarm information or stores a communication failure information into a device log, and a relevant technician analyzes the communication failure reason according to the alarm information or the device log.

[0118] When the transmitter and the at least two receivers receive the request sent by the control device, it is determined whether the respective positioning units are working normally, and the state information of the positioning units is fed back to the control device.

[0119] If the control device determines that the positioning unit is faulty according to the state information of the positioning unit in the feedback information, alarm information is prompted or the positioning unit fault information is stored in the device log, and the faulty positioning unit is maintained by the relevant technical personnel according to the alarm information or the system log.

[0120] If the communication between the control device and the transmitter, the communication between the control device and the at least two receivers is normal, and the positioning unit of the control device, the positioning unit of the transmitter and the positioning unit of the at least two receivers are normal, the first control command is sent to the transmitter, and the second control command is sent to each receiver.

[0121] Optionally, in the embodiment of the present disclosure, the electrical exploration method further comprises: after the at least two receivers send the response signal to the control device, the power management unit is cut off to stop power supply, and the controller and the wireless communication module enter standby mode. When the controller receives the control command of the control device again, the power management unit is powered on. By cutting off the power management unit, the power consumption can be saved as much as possible to prolong the use time of the receiver.

[0122] Figure 7 is a structural block diagram of a computer device provided by the present disclosure. The computer device comprises a processor 701 and a memory 702.

[0123] The processor 701 can include one or more processing cores, such as a 4-core processor, a 7-core processor, etc. The processor 701 can be implemented in at least one of a hardware form of a DSP (Digital Signal Processing), an FPGA (Field-Programmable Gate Array), a PLA (Programmable Logic Array). The processor 701 can also include a main processor and a coprocessor, the main processor being a processor for processing data in an awake state, also known as a CPU (Central Processing Unit), and the coprocessor being a low-power processor for processing data in a standby state. In some embodiments, the processor 701 can be integrated with a GPU (Graphics Processing Unit) that is responsible for rendering and drawing the content required to be displayed by the display screen. In some embodiments, the processor 701 can also include an AI (Artificial Intelligence) processor for processing machine learning-related computing operations.

[0124] The memory 702 can include one or more computer-readable storage media that can be non-transitory. The memory 702 can also include a high-speed random access memory, and a nonvolatile memory such as one or more disk storage devices, flash storage devices. In some embodiments, the non-transitory computer-readable storage medium in the memory 702 is used to store at least one instruction for being executed by the processor 701 to implement the electrical exploration method provided in the embodiments of the present application.

[0125] Those skilled in the art can understand that the structure shown in the figure does not constitute a limitation on the computer device, and can include more or fewer components than the figure, or combine certain components, or adopt different component arrangements. Figure 7

[0126] The embodiments of the present application also provide a non-transitory computer-readable storage medium, when the instructions in the storage medium are executed by the processor of the computer device, the computer device can execute the electrical exploration method provided by the embodiments of the present application.

[0127] A computer program product including instructions, when executed on a computer, causes the computer to execute the electrical exploration method provided by the embodiments of the present application.

[0128] ​The above merely describes optional embodiments of the present disclosure, and is not intended to limit the present disclosure. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. An electrical prospecting system, characterized in that, The electric prospecting system comprises a control device, a transmitter and at least two receivers; each of the receivers comprises a plurality of measuring electrodes; The control device is configured to send a first control command to the transmitter, the first control command being used to instruct the transmitter to start transmitting a measuring signal to a measured area at a predetermined transmission time; The control device is further configured to send a second control command to each of the receivers, the second control command being used to instruct each of the receivers to control the corresponding plurality of measuring electrodes to start receiving a response signal of the measuring signal at a predetermined receiving time, the predetermined receiving time being no later than the predetermined transmission time; The transmitter is configured to transmit the measuring signal according to the first control command; The receivers are configured to control the corresponding plurality of measuring electrodes to receive the response signal of the measuring signal according to the second control command, and send the received response signal to the control device; The control device, the transmitter and the receivers each comprise a positioning unit; The control device is configured to determine a current time by the built-in positioning unit, and generate the predetermined transmission time and the predetermined receiving time according to the current time; The transmitter is configured to determine a first time, and start transmitting the measuring signal according to the first time and the predetermined transmission time, the first time being a real-time UTC time obtained by the built-in positioning unit of the transmitter, or a UTC time obtained by the built-in positioning unit of the transmitter when the first control command is received; Each of the receivers is configured to determine a second time, and control the corresponding plurality of measuring electrodes to start receiving the response signal according to the second time and the predetermined receiving time, the second time being a real-time UTC time obtained by the built-in positioning unit of each of the receivers, or a UTC time obtained by the built-in positioning unit of each of the receivers when the second control command is received; Each of the receivers is further configured to determine a first receiving time from the time when the corresponding plurality of measuring electrodes start receiving the response signal of the measuring signal, the first receiving time being the time when a first measuring electrode starts receiving the response signal of the measuring signal, the first measuring electrode being a measuring electrode that starts receiving the response signal of the measuring signal first among the plurality of measuring electrodes; According to the first receiving time and a second receiving time, a receiving time difference of a second measuring electrode is calculated, the second receiving time being the time when the second measuring electrode starts receiving the response signal of the measuring signal, the second measuring electrode being one of the plurality of measuring electrodes other than the first measuring electrode; According to the calculated receiving time difference of the second measuring electrode, a time compensation is performed on the predetermined receiving time corresponding to the second measuring electrode.

2. The electrical prospecting system of claim 1, characterized in that Each of the receivers further comprises a channel switching unit, and each of the receivers is further configured to obtain first position parameters of the corresponding plurality of measuring electrodes by controlling the channel switching unit, and send the first position parameters of the plurality of measuring electrodes to the control device. The control device is configured to calibrate pre-stored second position parameters of the plurality of measuring electrodes according to first position parameters of the plurality of measuring electrodes.

3. An electrical prospecting method, characterized in that, The method comprises: The control device sends a first control command to a transmitter and a second control command to at least two receivers, the first control command being used to instruct the transmitter to transmit a measuring signal to a measured area at a predetermined transmission time, and the second control command being used to instruct each receiver to control a corresponding plurality of measuring electrodes to start receiving a response signal of the measuring signal at a predetermined receiving time, the predetermined receiving time being no later than the predetermined transmission time; The control device receives the response signal sent by the receiver, the response signal being a response signal of the measuring signal received by the corresponding plurality of measuring electrodes controlled by the receiver according to the second control command, the measuring signal being transmitted by the transmitter according to the first control command; The control device is configured to determine a current time by using an internal positioning unit, and generate the predetermined transmission time and the predetermined receiving time according to the current time; The transmitter is configured to determine a first time and the predetermined transmission time, and start transmitting the measuring signal, the first time being a UTC time obtained by the transmitter in real time through an internal positioning unit, or a UTC time obtained by the transmitter through the internal positioning unit when the first control command is received; Each receiver is configured to control the corresponding plurality of measuring electrodes to start receiving the response signal of the measuring signal according to a second time and the predetermined receiving time, the second time being a real-time UTC time obtained by each receiver through an internal positioning unit, or a UTC time obtained by each receiver through the internal positioning unit when the second control command is received; Each receiver determines a first receiving time from the time when the corresponding plurality of measuring electrodes start receiving the response signal of the measuring signal, the first receiving time being the time when a first measuring electrode starts receiving the response signal of the measuring signal, the first measuring electrode being a measuring electrode that starts receiving the response signal of the measuring signal first among the plurality of measuring electrodes; According to the first receiving time and a second receiving time, a receiving time difference of a second measuring electrode is calculated, the second receiving time being the time when the second measuring electrode starts receiving the response signal of the measuring signal, the second measuring electrode being one of the plurality of measuring electrodes other than the first measuring electrode; According to the calculated receiving time difference of the second measuring electrode, a time compensation is performed on the predetermined receiving time corresponding to the second measuring electrode.

4. The method of claim 3, wherein, The method further comprises: The control device receives first position parameters of the corresponding plurality of measuring electrodes sent by each receiver; The pre-stored second position parameters of the plurality of measuring electrodes are calibrated according to the first position parameters of the plurality of measuring electrodes.

5. A computer device, comprising: It comprises: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to perform the method of claim 3 or 4.

6. A computer-readable storage medium, characterized in that, When the instructions in the computer-readable storage medium are executed by the processor of the computer device, the computer device is enabled to perform the method as claimed in claim 3 or 4.

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