Method and apparatus for locating underground pipes

Abstract

The embodiment of the application discloses a kind of underground pipeline positioning method and device.The underground pipeline positioning method includes: the first detection signal is output to the object to be measured in first detection direction, and the first vibration intensity and the first vibration duration corresponding to the first detection signal are acquired;The second detection signal is output to the object to be measured in second detection direction, and the second vibration intensity and the second vibration duration corresponding to the second detection signal are acquired;The shape of the object to be measured is determined according to the first vibration intensity, the first vibration duration, the second vibration intensity and the second vibration duration;Whether the object to be measured is underground cable is determined according to shape.The scheme provided by the application can realize the technical effect of accurately judging whether underground pipeline exists in underground construction.

Description

Technical Field

[0001] This invention relates to the field of electronic technology applications, and in particular to a method and apparatus for locating underground pipelines. Background Technology

[0002] As cities develop, the number of underground pipelines increases. When new construction is needed, the damage to the existing underground pipelines becomes a problem during the construction process. Therefore, accurate location of underground pipelines is required.

[0003] Traditional positioning methods and signal tracing methods can only make a rough estimate of the location of underground pipelines. If further precise detection is required, manual drilling is still needed. After drilling to obtain a preliminary target, it is necessary to determine whether the preliminary target is an underground pipeline. If the result is yes, the high-precision location information of the underground pipeline can be obtained.

[0004] However, during drilling, hard objects such as rocks and debris are often encountered, requiring a determination of whether they are pipelines or rocks. For rocks, the drill bit can be changed for deeper drilling; for underground pipelines, drilling must be stopped immediately and the pipeline's location marked. Therefore, determining whether something is rock or an underground pipeline is currently the most difficult problem to solve, especially for some non-metallic pipelines with cement casings, making it very challenging to distinguish between rock and underground pipelines.

[0005] There is currently no effective solution to the problem that existing technologies cannot accurately determine the existence of underground pipelines during underground construction. Summary of the Invention

[0006] To address the aforementioned technical problems, embodiments of the present invention aim to provide a method and apparatus for locating underground pipelines, thereby at least resolving the issue that existing technologies cannot accurately determine the existence of underground pipelines during underground construction.

[0007] The technical solution of this invention is implemented as follows:

[0008] In a first aspect, embodiments of the present invention provide an apparatus for locating underground pipelines, comprising: a probe, a detection rod, and a signal processor, wherein the probe is located at the detection section of the detection rod; the signal processor comprises: at least two vibration sources connected to the probe, for generating at least two detection signals through the at least two vibration sources and transmitting the at least two detection signals to the probe; the probe is configured to output at least two detection signals to the object to be measured according to at least two preset detection directions, acquire the vibration intensity and vibration duration corresponding to the at least two detection signals, and return the vibration intensity and vibration duration to the signal processor, so that the signal processor determines the shape of the object to be measured based on the vibration intensity and vibration duration, and determines whether the object to be measured is an underground cable based on the shape.

[0009] Optionally, the probe includes a vibration signal monitoring unit, wherein the vibration signal monitoring unit is used to acquire the vibration intensity and vibration duration of at least two detection signals in corresponding preset detection directions.

[0010] Secondly, embodiments of the present invention provide a method for locating underground pipelines, comprising: outputting a first detection signal to an object under test in a first detection direction, and acquiring a first vibration intensity and a first vibration duration corresponding to the first detection signal; outputting a second detection signal to the object under test in a second detection direction, and acquiring a second vibration intensity and a second vibration duration corresponding to the second detection signal; determining the shape of the object under test based on the first vibration intensity, the first vibration duration, the second vibration intensity, and the second vibration duration; and determining whether the object under test is an underground cable based on the shape; wherein, the first detection direction is a first axis in a preset coordinate system, the second detection direction is a second axis in a preset coordinate system, and the first axis and the second axis are perpendicular to each other.

[0011] Optionally, before outputting a first detection signal to the object under test in the first detection direction, the method further includes: setting the detection rod on a horizontal surface perpendicular to the object under test; setting the extension direction of the horizontal surface as the first axis of a preset coordinate system; and setting the longitudinal extension direction of the detection rod as the second axis of the preset coordinate system.

[0012] Optionally, obtaining the first vibration intensity and first vibration duration corresponding to the first detection signal includes: when the first vibration intensity includes a first sub-vibration intensity and a second sub-vibration intensity, and the first vibration duration includes a first sub-vibration duration and a second sub-vibration duration, obtaining the first sub-vibration intensity and the first sub-vibration duration corresponding to the first detection signal in the first detection direction through the vibration signal monitoring unit; and obtaining the second sub-vibration intensity and the second sub-vibration duration corresponding to the first detection signal in the second detection direction.

[0013] Optionally, obtaining the second vibration intensity and the second vibration duration corresponding to the second detection signal includes: when the second vibration intensity includes a third sub-vibration intensity and a fourth sub-vibration intensity, and the second vibration duration includes a third sub-vibration duration and a fourth sub-vibration duration, obtaining the third sub-vibration intensity and the third sub-vibration duration corresponding to the second detection signal in the second detection direction through the vibration signal monitoring unit; and obtaining the fourth sub-vibration intensity and the fourth sub-vibration duration corresponding to the second detection signal in the first detection direction.

[0014] Optionally, determining the shape of the object to be measured based on the first vibration intensity, the first vibration duration, the second vibration intensity, and the second vibration duration includes: determining the shape of the object to be measured by using a preset relationship between the first vibration intensity, the first vibration duration, the second vibration intensity, the second vibration duration, and the object shape.

[0015] Further, optionally, the preset relationship is determined based on the first vibration intensity, the first vibration duration, the second vibration intensity, the second vibration duration, and the shape of the object to be tested, when detection is performed at at least at two detection positions and a preset number of detections.

[0016] Optionally, determining whether the object to be measured is an underground cable based on its shape includes: acquiring a first shape of the object to be measured at a first horizontal position using a device for locating underground pipes; acquiring a second shape of the object to be measured at a second horizontal position using the same device, wherein the second horizontal position is obtained by horizontally rotating the device for locating underground pipes, and the second horizontal position forms a preset angle with the first horizontal position; generating a three-dimensional relationship diagram based on the first and second shapes; and determining whether the object to be measured is an underground cable based on the three-dimensional relationship diagram.

[0017] This invention provides a method and apparatus for locating underground pipelines. By outputting a first detection signal to the object under test in a first detection direction and acquiring the first vibration intensity and first vibration duration corresponding to the first detection signal; by outputting a second detection signal to the object under test in a second detection direction and acquiring the second vibration intensity and second vibration duration corresponding to the second detection signal; by determining the shape of the object under test based on the first vibration intensity, first vibration duration, second vibration intensity, and second vibration duration; and by determining whether the object under test is an underground cable based on its shape, this method achieves the technical effect of accurately determining the existence of underground pipelines during underground construction. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of an underground pipeline positioning device provided in Embodiment 1 of the present invention;

[0020] Figure 2 This is a schematic diagram of a device for locating underground pipelines according to Embodiment 1 of the present invention in a first detection example;

[0021] Figure 3 This is a schematic diagram of a device for locating underground pipelines provided in Embodiment 1 of the present invention in a second detection example;

[0022] Figure 4 This is a flowchart illustrating a method for locating underground pipelines according to Embodiment 2 of the present invention. Detailed Implementation

[0023] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0024] It should be noted that the terms "first," "second," etc., in the specification, claims, and drawings of this invention are used to distinguish different objects, rather than to limit a specific order.

[0025] It should also be noted that the various embodiments of the present invention described below can be executed individually or in combination with each other, and the embodiments of the present invention do not impose specific limitations in this regard.

[0026] Example 1

[0027] In a first aspect, embodiments of the present invention provide a device for locating underground pipelines. Figure 1 This is a schematic diagram of an underground pipeline positioning device provided in Embodiment 1 of the present invention; as shown. Figure 1 As shown, the underground pipeline positioning device provided in this application embodiment includes:

[0028] The system comprises a probe 12, a detection rod 14, and a signal processor 16. The probe 12 is located in the detection section of the detection rod 14. The signal processor 16 includes at least two vibration sources connected to the probe 12, which generate at least two detection signals and transmit them to the probe 12. The probe 12 is configured to output at least two detection signals to the object under test according to at least two preset detection directions, acquire the vibration intensity and vibration duration corresponding to the at least two detection signals, and return the vibration intensity and vibration duration to the signal processor 16. This allows the signal processor 16 to determine the shape of the object under test based on the vibration intensity and vibration duration, and to determine whether the object under test is an underground cable based on its shape.

[0029] Optionally, the probe 12 includes a vibration signal monitoring unit, wherein the vibration signal monitoring unit is used to acquire the vibration intensity and vibration duration of at least two detection signals in corresponding preset detection directions.

[0030] Specifically, Figure 2 This is a schematic diagram of a device for locating underground pipelines according to Embodiment 1 of the present invention in a first detection example; Figure 3This is a schematic diagram of a device for locating underground pipelines according to Embodiment 1 of the present invention, shown in a second detection example. In this embodiment, at least two preset detection directions may include: a first detection direction and a second detection direction, wherein the first detection direction is... Figure 2 and Figure 3 The Z-axis direction in the middle, the second detection direction is Figure 2 and Figure 3 The X-axis direction in the diagram.

[0031] Example of first detection:

[0032] like Figure 2 As shown, the first detection example is in the case that the object to be detected is rock. The signal processor 16 of the underground pipeline positioning device provided in this application embodiment includes at least two vibration sources. In a preferred example, the at least two vibration sources are a first vibration source capable of generating a detection signal in the horizontal X-axis direction, and a second vibration source capable of generating a detection signal in the spatial Z-axis direction perpendicular to the X-axis.

[0033] By drilling a hole underground with drilling equipment, the probe 12 is brought into contact with the horizontal surface of the object to be measured through the probe rod 14 to conduct the first detection, that is, to conduct detection in the Z-axis extension direction. The signal intensity of the first vibration source and the second vibration source in the X-axis and Z-axis is recorded. The vibration intensity in the X-axis is recorded as ZX1, and the vibration intensity in the Z-axis is recorded as ZZ1.

[0034] After the vibration stops, the duration of vibration in the X-axis direction is obtained and denoted as TZX1; the duration of vibration in the Z-axis extension direction is obtained and denoted as TZZ1.

[0035] A second detection was performed, with the detection direction along the X-axis. The signal strength of the first and second vibration sources extended along the X-axis and Z-axis was recorded. The signal strength along the X-axis was denoted as XX1, and the signal strength extended along the Z-axis was denoted as XZ1.

[0036] After the vibration stops, the duration of vibration in the X-axis direction is obtained and recorded as TXX1; the duration of vibration in the Z-axis extension direction is obtained and recorded as TXZ1.

[0037] In this embodiment of the application, the object's characteristics are as follows:

[0038] In the first detection, the detection direction is the Z-axis extension direction. Vibration is applied to the surface of the object under test along the Z-axis extension direction. Since the applied vibration direction is a reciprocating motion in the Z-axis direction, the vibration direction is the same as the detection direction. In the underground scene, the cross-section of the object under test is more likely to vibrate in the longitudinal direction, so the vibration amplitude is larger, the vibration stops slowly, and the vibration duration is longer. However, due to the burial, the object under test is not likely to vibrate significantly in the horizontal direction of the X-axis extension surface. Therefore, the longer the horizontal length of the object under test, the smaller the vibration amplitude is compared to the Z-axis extension direction, the faster the vibration stops, and the shorter the vibration duration is compared to the Z-axis extension direction.

[0039] The second detection was conducted along the X-axis. Vibration was applied to the surface of the object under test along the X-axis. Since the vibration direction was a reciprocating motion along the X-axis, the vibration direction was the same as the detection direction. In underground scenarios, the object under test was not easy to vibrate in the horizontal direction. Even if the vibration intensity was high, the vibration amplitude was small, the vibration stopped quickly, and the vibration duration was short. However, in the extension direction of the Z-axis, the vibration amplitude was large, the vibration stopped slowly, and the vibration duration was long.

[0040] Based on the values ​​of ZZ1 and TZZ1, as well as the values ​​of XZ1 and TXZ1, the thickness of the object to be measured can be calculated. That is, the larger the values ​​of ZZ1 and TZZ1, as well as the values ​​of XZ1 and TXZ1, the thinner the object to be measured; the smaller the values ​​of ZZ1 and TZZ1, as well as the values ​​of XZ1 and TXZ1, the thicker the object to be measured.

[0041] Based on the values ​​of ZX1 and TZX1, as well as the values ​​of XX1 and TTXX1, the length of the object to be measured can be calculated. That is, the larger the values ​​of ZX1 and TZX1, as well as the values ​​of XX1 and TTXX1, the shorter the X-axis is upward, and the smaller the values ​​of ZX1 and TZX1, as well as the values ​​of XX1 and TTXX1, the longer the X-axis is upward.

[0042] The underground pipeline positioning device provided in this application embodiment can create a data comparison table based on multiple data from different locations, and complete the correspondence table between the measurement intensity time value and the length, width, height and distance of the hard object, so as to quickly obtain the length, width and height data through vibration intensity.

[0043] The underground pipeline positioning device provided in this application embodiment can be horizontally rotated, for example, by 18°, to establish a new X2 coordinate. The X2 coordinate differs from the X1 coordinate by 18°. Therefore, the X2 coordinate can be ultimately converted into a three-dimensional XYZ spatial system through calculation.

[0044] Convert X1 to XY(1,0) coordinates;

[0045] X2 is converted to XY(cosα, sinα) coordinates, where α is the angle of rotation.

[0046] By using the above method and taking multiple measurements from different angles, a three-dimensional relationship diagram of the object under test can be drawn.

[0047] Based on the 3D relationship diagram, it can be determined whether the object being measured is an underground pipeline or rock.

[0048] Among them, the values ​​of ZX1, TZX1; XZ1, TXZ1 should theoretically be very small. They are not in the same direction as the applied vibration source.

[0049] If certain measurements indicate that the object being tested is irregularly shaped, or that the object is composed of multiple hard objects tightly attached together, it can also be quickly determined whether it is a slender pipe.

[0050] Second detection example:

[0051] like Figure 3 As shown, the detection process is the same as that of the first detection example, except that the first detection example detects rocks, while the second detection example detects underground pipelines.

[0052] This invention provides a device for locating underground pipelines. A probe is located at the detection section of a detection rod. The signal processor includes at least two vibration sources connected to the probe, used to generate at least two detection signals and transmit these signals to the probe. The probe outputs at least two detection signals to the object under test according to at least two preset detection directions, acquires the vibration intensity and duration corresponding to the at least two detection signals, and returns the vibration intensity and duration to the signal processor. This allows the signal processor to determine the shape of the object under test based on the vibration intensity and duration, and to determine whether the object is an underground cable based on its shape. This enables accurate determination of the presence of underground pipelines during underground construction.

[0053] Example 2

[0054] Secondly, embodiments of the present invention provide a method for locating underground pipelines. Figure 4 This is a flowchart illustrating a method for locating underground pipelines according to Embodiment 2 of the present invention; as shown. Figure 4 As shown, the method for locating underground pipelines provided in this application includes:

[0055] Step S402: Output a first detection signal to the object under test in the first detection direction, and obtain the first vibration intensity and first vibration duration corresponding to the first detection signal;

[0056] Optionally, before outputting the first detection signal to the object under test in the first detection direction in step S402, the method for locating underground pipelines provided in this application embodiment further includes: setting the detection rod on a horizontal surface perpendicular to the object under test; setting the extension direction of the horizontal surface as the first axis of a preset coordinate system; and setting the longitudinal extension direction of the detection rod as the second axis of the preset coordinate system.

[0057] Optionally, obtaining the first vibration intensity and first vibration duration corresponding to the first detection signal in step S402 includes: when the first vibration intensity includes a first sub-vibration intensity and a second sub-vibration intensity, and the first vibration duration includes a first sub-vibration duration and a second sub-vibration duration, obtaining the first sub-vibration intensity and the first sub-vibration duration corresponding to the first detection signal in the first detection direction through the vibration signal monitoring unit; and obtaining the second sub-vibration intensity and the second sub-vibration duration corresponding to the first detection signal in the second detection direction.

[0058] Step S404: Output a second detection signal to the object under test in the second detection direction, and obtain the second vibration intensity and the second vibration duration corresponding to the second detection signal;

[0059] Optionally, in step S404, obtaining the second vibration intensity and the second vibration duration corresponding to the second detection signal includes: when the second vibration intensity includes a third sub-vibration intensity and a fourth sub-vibration intensity, and the second vibration duration includes a third sub-vibration duration and a fourth sub-vibration duration, obtaining the third sub-vibration intensity and the third sub-vibration duration corresponding to the second detection signal in the second detection direction through the vibration signal monitoring unit; and obtaining the fourth sub-vibration intensity and the fourth sub-vibration duration corresponding to the second detection signal in the first detection direction.

[0060] Step S406: Determine the shape of the object to be measured based on the first vibration intensity, the first vibration duration, the second vibration intensity, and the second vibration duration;

[0061] Optionally, determining the shape of the object to be measured based on the first vibration intensity, the first vibration duration, the second vibration intensity, and the second vibration duration in step S406 includes: determining the shape of the object to be measured by using a preset relationship between the first vibration intensity, the first vibration duration, the second vibration intensity, the second vibration duration, and the object shape.

[0062] Further, optionally, the preset relationship is determined based on the first vibration intensity, the first vibration duration, the second vibration intensity, the second vibration duration, and the shape of the object to be tested, when detection is performed at at least at two detection positions and a preset number of detections.

[0063] Step S408: Determine whether the object to be tested is an underground cable based on its shape;

[0064] The first detection direction is the first axis in the preset coordinate system, and the second detection direction is the second axis in the preset coordinate system. The first axis and the second axis are perpendicular to each other.

[0065] Optionally, step S408, determining whether the object to be tested is an underground cable based on its shape, includes: obtaining the first shape of the object to be tested at a first horizontal position using a device for locating underground pipes; obtaining the second shape of the object to be tested at a second horizontal position using the same device, wherein the second horizontal position is obtained by horizontally rotating the device for locating underground pipes, and the second horizontal position forms a preset angle with the first horizontal position; generating a three-dimensional relationship diagram based on the first and second shapes; and determining whether the object to be tested is an underground cable based on the three-dimensional relationship diagram.

[0066] In summary, combining steps S402 to S408, the underground pipeline positioning method provided in this application embodiment is applicable to the underground pipeline positioning device in Embodiment 1, wherein,

[0067] In the underground pipeline positioning method provided in this application embodiment, the first detection signal and the second detection signal are generated by a signal processor. The signal processor includes at least two vibration sources. In a preferred example, the at least two vibration sources are a first vibration source capable of generating a detection signal in the horizontal X-axis direction, and a second vibration source capable of generating a detection signal in the spatial Z-axis direction perpendicular to the X-axis.

[0068] By drilling holes underground using drilling equipment, the probe is brought into contact with the horizontal surface of the object to be measured through the probe rod to perform the first detection, that is, to perform detection in the Z-axis extension direction. The signal intensity of the first vibration source and the second vibration source in the X-axis and Z-axis is recorded. The vibration intensity of the X-axis is recorded as ZX1 (that is, the first sub-vibration intensity in this embodiment of the application), and the vibration intensity of the Z-axis is recorded as ZZ1 (that is, the second sub-vibration intensity in this embodiment of the application).

[0069] After the vibration stops, the duration of the vibration in the X-axis direction is obtained and recorded as TZX1 (i.e., the first sub-vibration duration in this embodiment); the duration of the vibration in the Z-axis extension direction is obtained and recorded as TZZ1 (i.e., the second sub-vibration duration in this embodiment).

[0070] A second detection is performed in the X-axis direction. The signal intensity of the first vibration source and the second vibration source extended along the X-axis and Z-axis is recorded. The signal intensity along the X-axis is recorded as XX1 (i.e., the third sub-vibration intensity in this embodiment), and the signal intensity extended along the Z-axis is recorded as XZ1 (i.e., the fourth sub-vibration intensity in this embodiment).

[0071] After the vibration stops, the duration of vibration in the X-axis direction is obtained and recorded as TXX1 (i.e., the third sub-vibration duration in this embodiment); the duration of vibration in the Z-axis extension direction is obtained and recorded as TXZ1 (i.e., the fourth sub-vibration duration in this embodiment).

[0072] In this embodiment of the application, the object's characteristics are as follows:

[0073] In the first detection, the detection direction is the Z-axis extension direction. Vibration is applied to the surface of the object under test along the Z-axis extension direction. Since the applied vibration direction is a reciprocating motion in the Z-axis direction, the vibration direction is the same as the detection direction. In the underground scene, the cross-section of the object under test is more likely to vibrate in the longitudinal direction, so the vibration amplitude is larger, the vibration stops slowly, and the vibration duration is longer. However, due to the burial, the object under test is not likely to vibrate significantly in the horizontal direction of the X-axis extension surface. Therefore, the longer the horizontal length of the object under test, the smaller the vibration amplitude is compared to the Z-axis extension direction, the faster the vibration stops, and the shorter the vibration duration is compared to the Z-axis extension direction.

[0074] The second detection was conducted along the X-axis. Vibration was applied to the surface of the object under test along the X-axis. Since the vibration direction was a reciprocating motion along the X-axis, the vibration direction was the same as the detection direction. In underground scenarios, the object under test was not easy to vibrate in the horizontal direction. Even if the vibration intensity was high, the vibration amplitude was small, the vibration stopped quickly, and the vibration duration was short. However, in the extension direction of the Z-axis, the vibration amplitude was large, the vibration stopped slowly, and the vibration duration was long.

[0075] Based on the values ​​of ZZ1 and TZZ1, as well as the values ​​of XZ1 and TXZ1, the thickness of the object to be measured can be calculated. That is, the larger the values ​​of ZZ1 and TZZ1, as well as the values ​​of XZ1 and TXZ1, the thinner the object to be measured; the smaller the values ​​of ZZ1 and TZZ1, as well as the values ​​of XZ1 and TXZ1, the thicker the object to be measured.

[0076] Based on the values ​​of ZX1 and TZX1, as well as the values ​​of XX1 and TTXX1, the length of the object to be measured can be calculated. That is, the larger the values ​​of ZX1 and TZX1, as well as the values ​​of XX1 and TTXX1, the shorter the X-axis is upward, and the smaller the values ​​of ZX1 and TZX1, as well as the values ​​of XX1 and TTXX1, the longer the X-axis is upward.

[0077] The method for locating underground pipelines provided in this application can create a data comparison table based on multiple data from different locations, and complete the correspondence table between the measurement intensity time value and the length, width, height, and distance of the hard object, so as to quickly obtain the length, width, and height data through vibration intensity.

[0078] The method for locating underground pipelines provided in this application involves horizontal rotation, for example, rotating horizontally by 18° to establish a new X2 coordinate system, which differs from the X1 coordinate system by 18°. Therefore, the X2 coordinate system can be ultimately converted into a three-dimensional XYZ spatial system through calculation.

[0079] Convert X1 to XY(1,0) coordinates;

[0080] X2 is converted to XY(cosα, sinα) coordinates, where α is the angle of rotation.

[0081] By using the above method and taking multiple measurements from different angles, a three-dimensional relationship diagram of the object under test can be drawn.

[0082] Based on the 3D relationship diagram, it can be determined whether the object being measured is an underground pipeline or rock.

[0083] Among them, the values ​​of ZX1, TZX1; XZ1, TXZ1 should theoretically be very small. They are not in the same direction as the applied vibration source.

[0084] If certain measurements indicate that the object being tested is irregularly shaped, or that the object is composed of multiple hard objects tightly attached together, it can also be quickly determined whether it is a slender pipe.

[0085] Specific examples are as follows:

[0086] 1: The object being measured is a round, flat stone.

[0087] The characteristics of a round, flat stone are: it is thin vertically and extends long around its edges.

[0088] Applying vibrations perpendicular to the Z-axis to a large, round stone results in strong vibration amplitude and a long aftershock time, thus allowing the creation of a very thin, vertically oriented basic shape.

[0089] When X-axis vibration is applied to a large round stone, the vibration amplitude is weak and the aftershock time is short.

[0090] The device for locating underground pipelines was used to monitor vibrations along different X-axis directions. The results showed that the vibration amplitude was weak and the aftershock time was short.

[0091] Therefore, it can be determined that it is elongated at any angle on the horizontal plane.

[0092] By combining all the results, the shape of the round, large stone can be drawn.

[0093] 2: The object being measured is a large spherical stone.

[0094] The characteristic of a large spherical rock is that it extends in all directions.

[0095] Applying vibrations perpendicular to the Z-axis to a large spherical stone results in weak vibration amplitude and short aftershock time, thus allowing for the creation of a very thick, vertically oriented foundation.

[0096] When X-axis vibration is applied to a large spherical rock, the vibration amplitude is weak and the aftershock time is short.

[0097] The device for locating underground pipelines was used to monitor vibrations along different X-axis. The results showed that the vibration amplitude was weak and the aftershock time was short.

[0098] Therefore, it can be determined that it is elongated at any angle on the horizontal plane.

[0099] By combining all the results, the shape of the spherical boulder can be drawn.

[0100] 3: The object being measured is a long, narrow tube.

[0101] The characteristic of a long, narrow tube is that it extends in only one direction.

[0102] By applying vibration perpendicular to the Z-axis to a long, narrow tube, the vibration amplitude is strong and the aftershock time is long, thus allowing the creation of a very thin, vertical basic shape.

[0103] The device for locating rotating underground pipelines applied vibration monitoring along different X-axis directions. The results showed that only one direction exhibited strong vibration amplitude and a long aftershock time. The vibration amplitude was weakest and the aftershock time was shortest in the direction perpendicular to the horizontal axis (90° to the horizontal). The vibration amplitude and aftershock time in the other directions showed sinusoidal characteristics.

[0104] Therefore, it can be plotted that the direction with the weakest vibration amplitude and the shortest aftershock time is a horizontally elongated shape, while the other directions are horizontally short shapes, and the thickness is also short.

[0105] By combining all the results, the shape of the long, narrow tube can be drawn.

[0106] 4: The object being tested is a small stone.

[0107] The characteristic of small stones is that they are short in all directions.

[0108] Applying vibrations along the vertical Z-axis, X-axis, and then rotating horizontally to a small stone, all different X-axis vibrations showed strong vibration intensity and short echo time, indicating that the object is typically very small, with strong follow-up vibration and no echo vibration.

[0109] This invention provides a method for locating underground pipelines. By outputting a first detection signal to the object under test in a first detection direction and acquiring the first vibration intensity and first vibration duration corresponding to the first detection signal; by outputting a second detection signal to the object under test in a second detection direction and acquiring the second vibration intensity and second vibration duration corresponding to the second detection signal; and by determining the shape of the object under test based on the first vibration intensity, first vibration duration, second vibration intensity, and second vibration duration, the method can accurately determine the presence of underground pipelines during underground construction.

[0110] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0111] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0112] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0113] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.

Claims

1. A device for locating underground pipelines, characterized in that, include: The probe, detection rod, and signal processor, among which, The probe is located at the detection section of the detection rod; The signal processor includes at least two vibration sources connected to the probe, for generating at least two detection signals through the at least two vibration sources and transmitting the at least two detection signals to the probe; The probe is used to output at least two detection signals to the object under test according to at least two preset detection directions, obtain the vibration intensity and vibration duration corresponding to the at least two detection signals, and return the vibration intensity and vibration duration to the signal processor, so that the signal processor can determine the shape of the object under test according to the vibration intensity and vibration duration, and determine whether the object under test is an underground cable according to the shape. The probe rod is positioned on a horizontal surface perpendicular to the object being measured; the extension direction of the horizontal surface is set as the first axis of a preset coordinate system; and the longitudinal extension direction of the probe rod is set as the second axis of the preset coordinate system. The shape of the object to be tested is determined by a preset relationship between the first vibration intensity, the first vibration duration, the second vibration intensity, the second vibration duration, and the shape of the object; the preset relationship is determined based on the first vibration intensity, the first vibration duration, the second vibration intensity, the second vibration duration, and the shape of the object to be tested obtained by detection at at least two detection positions and a preset number of detections.

2. The device for locating underground pipelines according to claim 1, characterized in that, The probe includes a vibration signal monitoring unit, wherein the vibration signal monitoring unit is used to acquire the vibration intensity and vibration duration of the at least two detection signals in the corresponding preset detection direction.

3. A method for locating underground pipelines, characterized in that, include: The test object outputs a first detection signal in the first detection direction, and obtains the first vibration intensity and the first vibration duration corresponding to the first detection signal; A second detection signal is output to the object under test in the second detection direction, and the second vibration intensity and the second vibration duration corresponding to the second detection signal are obtained; The shape of the object to be tested is determined based on the first vibration intensity, the first vibration duration, the second vibration intensity, and the second vibration duration. Determine whether the object under test is an underground cable based on its shape; Wherein, the first detection direction is the first axis in the preset coordinate system, the second detection direction is the second axis in the preset coordinate system, and the first axis and the second axis are perpendicular to each other; Before the object under test outputs a first detection signal in the first detection direction, the method further includes: The probe is positioned on a horizontal surface perpendicular to the object to be measured. The extension direction of the horizontal surface is set as the first axis of the preset coordinate system; The longitudinal extension direction of the probe rod is set as the second axis of the preset coordinate system; The step of obtaining the first vibration intensity and the first vibration duration corresponding to the first detection signal includes: When the first vibration intensity includes a first sub-vibration intensity and a second sub-vibration intensity, and the first vibration duration includes a first sub-vibration duration and a second sub-vibration duration, the vibration signal monitoring unit acquires the first sub-vibration intensity and the first sub-vibration duration corresponding to the first detection signal at the first detection direction; and acquires the second sub-vibration intensity and the second sub-vibration duration corresponding to the first detection signal at the second detection direction. Obtaining the second vibration intensity and the second vibration duration corresponding to the second detection signal includes: When the second vibration intensity includes a third sub-vibration intensity and a fourth sub-vibration intensity, and the second vibration duration includes a third sub-vibration duration and a fourth sub-vibration duration, the vibration signal monitoring unit acquires the third sub-vibration intensity and the third sub-vibration duration corresponding to the second detection signal at the second detection direction; and acquires the fourth sub-vibration intensity and the fourth sub-vibration duration corresponding to the second detection signal at the first detection direction. Determining the shape of the object to be tested based on the first vibration intensity, the first vibration duration, the second vibration intensity, and the second vibration duration includes: The shape of the object to be tested is determined by a preset relationship between the first vibration intensity, the first vibration duration, the second vibration intensity, the second vibration duration, and the object shape. The preset relationship is determined based on the first vibration intensity, the first vibration duration, the second vibration intensity, the second vibration duration, and the shape of the object under test obtained from the detection, when detection is performed at at least at two detection positions and a preset number of detections. The step of determining whether the object to be tested is an underground cable based on its shape includes: The first shape of the object to be measured is obtained by a device that locates it through an underground pipeline at a first horizontal position; The second shape of the object to be measured is obtained by the device for positioning the underground pipeline at a second horizontal position, wherein the second horizontal position is obtained by horizontally rotating the device for positioning the underground pipeline, and the second horizontal position is at a preset angle to the first horizontal position. A three-dimensional relationship diagram is generated based on the first shape and the second shape; Based on the three-dimensional relationship diagram, determine whether the object to be tested is the underground cable.

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