CN215067233U - Single coil magnetic field intensity measuring device - Google Patents

Abstract

The utility model discloses a single-coil magnetic field intensity measuring device, which comprises a transmitter and a receiver, wherein the transmitter is electrically connected with the receiver; the receiver comprises a first control module, an electromagnetic receiving module, a first GPS module and a signal processing module; the electromagnetic receiving module comprises a single coil, and the single coil is used for inducing electromagnetic signals; the first GPS module and the signal processing module are respectively connected with the first control module; the electromagnetic receiving module is connected with the signal processing module; the signal processing module is used for filtering or amplifying the electromagnetic signals; the transmitter comprises a second control module, a second GPS module and a transmitting coil; the second GPS module and the transmitting coil are respectively connected with the second control module, and the transmitting coil is used for transmitting electromagnetic signals. The utility model provides a single coil magnetic field intensity survey device uses single coil response electromagnetic signal, improves pipeline buried depth detection degree of depth and precision.

Description

Single coil magnetic field intensity measuring device

Technical Field

The utility model relates to a monocoil magnetic field intensity survey technical field especially relates to a monocoil magnetic field intensity survey device.

Background

The traditional pipeline buried depth detection uses two coils, namely a horizontal coil and a vertical coil, and the pipeline buried depth positioning is obtained by testing horizontal magnetic field signals and vertical magnetic field signals of pipelines at different height positions and calculating according to the collected horizontal magnetic field signals and vertical magnetic field signals. However, the method has the problems that qualitative detection can be performed only as a geophysical prospecting method, and accurate quantitative data detection cannot be performed, because the numerical value measured by the double-coil method cannot be subjected to effective quantity value tracing and uncertainty evaluation according to an actual field measurement method, the depth of inverse calculation is simply performed by using the difference value of electromagnetic strength, the error cannot be controlled, and meanwhile, the magnetic field is easily interfered by using the current of the pipeline, the signal values under different frequency backgrounds cannot be effectively eliminated, and larger measurement difference is easily caused.

SUMMERY OF THE UTILITY MODEL

The utility model provides a single coil magnetic field intensity survey device to solve above-mentioned twin coil and carry out the problem that exists in the pipeline buried depth detects.

In order to achieve the above object, the present invention provides a single-coil magnetic field strength measuring device, which comprises a transmitter and a receiver, wherein the transmitter is electrically connected to the receiver; the receiver comprises a first control module, an electromagnetic receiving module, a first GPS module and a signal processing module; the electromagnetic receiving module comprises a single coil, and the single coil is used for inducing electromagnetic signals; the first GPS module and the signal processing module are respectively connected with the first control module; the electromagnetic receiving module is connected with the signal processing module; the signal processing module is used for filtering or amplifying the electromagnetic signals; the transmitter comprises a second control module, a second GPS module and a transmitting coil; the second GPS module and the transmitting coil are respectively connected with the second control module, and the transmitting coil is used for transmitting electromagnetic signals; the first GPS module and the second GPS module are used for collecting GPS coordinate values.

Preferably, the first control module and the second control module are single-chip microcomputers.

Preferably, the electromagnetic signal transmitted by the transmitting coil is a low-frequency signal.

Preferably, the transmitter and the receiver each include a battery module for supplying power.

Preferably, the receiver further comprises a display module, the display module is connected with the first control module, and the display module is used for displaying an operation interface.

The utility model provides a single coil magnetic field intensity survey device through using single coil response electromagnetic signal, adopts the mode of data fitting, carries out the analysis to the law of the pipeline magnetic field signal who is detected the different high positions of calibration point on the pipeline, reachs the relation between pipeline magnetic field signal and the depth of investigation to the detected signal who calculates other test points. Through the utility model provides a single coil magnetic field intensity survey device can eliminate the influence of soil electromagnetic rate and environment etc. improves pipeline buried depth detection degree of depth and precision.

Drawings

Fig. 1 is a schematic view of a deployment structure of a single-coil magnetic field strength measurement apparatus according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a receiver of a single-coil magnetic field strength measurement apparatus according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a transmitter of a single-coil magnetic field strength measurement apparatus according to an embodiment of the present invention;

fig. 4 is a schematic flowchart illustrating a testing procedure of the single-coil magnetic field strength measuring apparatus according to an embodiment of the present invention;

fig. 5 is a schematic diagram illustrating a relationship between a test distance and a signal value according to an embodiment of the present invention.

In the figure, 10, a transmitter; 11. a second control module; 12. a second GPS module; 13. a transmitting coil; 20. a receiver; 21. a first control module; 22. an electromagnetic receiving module; 221. a single coil; 23. a first GPS module; 24. a signal processing module; 25. a display module; 100. and (6) testing the pile.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, 2 and 3 together, an embodiment of the present invention provides a single-coil magnetic field strength measuring apparatus, which includes a transmitter 10 and a receiver 20, wherein the transmitter 10 is electrically connected to the receiver 20; the receiver 20 comprises a first control module 21, an electromagnetic receiving module 22, a first GPS module 23, a signal processing module 24 and a display module 25; the electromagnetic receiving module 22 comprises a single coil 221, and the single coil 221 is used for inducing electromagnetic signals; the first GPS module 23, the signal processing module 24 and the display module 25 are respectively connected with the first control module 21; the display module 25 is used for displaying an operation interface; the electromagnetic receiving module 22 is connected with the signal processing module 24; the signal processing module 24 is configured to filter or amplify the electromagnetic signal; in a specific embodiment of the present invention, the receiver 20 is further provided with a test stub 100, the test stub 100 is connected to the receiver 20, and the test stub 100 is used for grounding the single coil 221 to receive the electromagnetic signal transmitted by the pipeline. Specifically, in an embodiment of the present invention, the signal processing module 24 may include a signal amplifier, a gain amplifier, a frequency-selective filter, etc. to achieve better electromagnetic signal reception, which is not limited herein.

The transmitter 10 comprises a second control module 11, a second GPS module 12 and a transmitting coil 13; the second GPS module 12 and the transmitting coil 13 are respectively connected to the second control module 11, and the transmitting coil 13 is configured to transmit an electromagnetic signal; specifically, the electromagnetic signal transmitted by the transmitting coil 13 is a low-frequency signal. The first GPS module 23 and the second GPS module 12 are used for acquiring GPS coordinate values. The transmitter 10 and the receiver 20 each include a battery module for supplying power. Preferably, in other embodiments, the transmitter 10 may also be provided with a display screen for displaying the status, battery level, etc. of the transmitter 10. Specifically, in an embodiment of the present invention, the first control module 21 and the second control module 11 are single-chip microcomputers.

Referring to fig. 4 and 5, in an embodiment of the present invention, the single-coil magnetic field strength measuring apparatus is used as follows:

step S1: and (5) performing calibration point drawing test. Before the single-coil magnetic field intensity measuring device is used for detection, one end of a pipeline to be detected is connected with a receiver through a cable, the other end of the pipeline to be detected is connected with a transmitter to form a closed loop, and then a low-frequency signal is continuously transmitted to the loop through the transmitter; the electromagnetic signal radiated from the pipe wall is read by a receiver. As shown in fig. 5, the amplitude of the electromagnetic signal decreases as the distance between the pipe, the receiver, and the transmitter increases. Selecting any point on a pipeline as a calibration point, setting a receiver at the calibration point, taking the distance between a certain receiver and a transmitter as a fixed distance value, performing calibration point drawing test, specifically, respectively receiving electromagnetic signals transmitted by the pipeline at different height positions of the calibration point, and inputting electromagnetic signal values collected at different height positions into a dynamic calculation model for analysis, wherein the dynamic calculation model calculates regular values of pipeline electromagnetic signals by aiming at the electromagnetic signal values collected at different height positions on the basis of the currently detected soil electromagnetic rate, temperature and humidity and preset parameters of the transmitter and the receiver so as to obtain the relation between the pipeline electromagnetic signals and the detection depth, and the relation between the pipeline electromagnetic signals and the detection depth is used as a detection model with the highest fitting degree for subsequent specific tests. Through many times of drawing high tests to utilize environmental factors such as soil electromagnetic rate, temperature, humidity of present detection, can effectively eliminate the influence of environmental factor to the testing result, promote detection accuracy and rate of accuracy.

Step S2: during specific testing, the transmitter sends electromagnetic signals, the receiver receives the electromagnetic signals transmitted by the pipeline, and the buried depth of the pipeline is calculated based on the detection model. Specifically, the electromagnetic signal collected by the receiver has the largest signal value directly above the management center, and thus the position where the signal value is the largest is the management center position. And simultaneously, collecting the GPS coordinates of the maximum position of the signal value as the current position coordinates of the pipeline.

Step S3: and repeating the step S2 of testing the positions for multiple times, and connecting the GPS coordinates of the position with the maximum signal value tested each time to obtain the pipeline trend.

Compared with the prior art, the utility model provides a single coil magnetic field intensity survey device through using single coil response electromagnetic signal, adopts the mode of data fitting, to being detected the law of the pipeline magnetic field signal of the different high positions of calibration point on the pipeline and analyzing, reachs the relation between pipeline magnetic field signal and the depth of investigation to the detected signal to other test points calculates. Through the utility model provides a single coil magnetic field intensity survey device can eliminate the influence of soil electromagnetic rate and environment etc. improves pipeline buried depth detection degree of depth and precision.

The above embodiments of the present invention are only described, and it should be noted that, for those skilled in the art, modifications can be made without departing from the inventive concept, but these all fall into the protection scope of the present invention.

Claims (5)

1. A single-coil magnetic field strength measurement device, comprising a transmitter and a receiver, the transmitter being electrically connected to the receiver; the receiver comprises a first control module, an electromagnetic receiving module, a first GPS module and a signal processing module; the electromagnetic receiving module comprises a single coil, and the single coil is used for inducing electromagnetic signals; the first GPS module and the signal processing module are respectively connected with the first control module; the electromagnetic receiving module is connected with the signal processing module; the signal processing module is used for filtering or amplifying the electromagnetic signals; the transmitter comprises a second control module, a second GPS module and a transmitting coil; the second GPS module and the transmitting coil are respectively connected with the second control module, and the transmitting coil is used for transmitting electromagnetic signals; the first GPS module and the second GPS module are used for collecting GPS coordinate values.

2. The single-coil magnetic field strength measurement device according to claim 1, wherein the first control module and the second control module are single-chip microcomputers.

3. The single-coil magnetic field strength measurement device of claim 1, wherein the electromagnetic signal transmitted by the transmitting coil is a low frequency signal.

4. The single-coil magnetic field strength apparatus of claim 1, wherein the transmitter and the receiver each comprise a battery module for providing a power source.

5. The single-coil magnetic field strength measurement device according to claim 1, wherein the receiver further comprises a display module, the display module is connected with the first control module, and the display module is used for displaying an operation interface.

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