Method for positioning and detecting underground non-metallic pipelines
By using a multi-frequency microwave pipe detector to move and rotate, combined with microwave signal reception and target indicator, the problem of detecting the location and burial depth of underground non-metallic pipes has been solved, enabling rapid and accurate positioning and management.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BEIJING WEST TUBE INSPECTION TECH
- Filing Date
- 2022-11-08
- Publication Date
- 2026-07-21
AI Technical Summary
Existing technologies cannot quickly and accurately detect the location and burial depth of underground non-metallic pipelines, leading to difficulties in pipeline operation, management, and maintenance.
A multi-frequency microwave pipe detector is used. By moving and rotating the microwave pipe detector, the microwave signal receiver receives the reflected signal, and the target indicator marks the position on the ground to calculate the burial depth and direction of the non-metallic pipe.
It enables the rapid and accurate determination of the location and burial depth of underground non-metallic pipelines, facilitating subsequent management and maintenance.
Smart Images
Figure CN115903059B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of underground pipeline location and detection technology, and more specifically, to a method for locating and detecting underground non-metallic pipelines. Background Technology
[0002] Currently, detection technologies for underground metal pipelines are quite mature (such as ground-penetrating radar and acoustic methods). However, effective techniques are still lacking for detecting non-metallic pipelines. This is because non-metallic pipeline materials are neither conductive nor magnetic, and are nearly insulated, making it impossible to directly apply signals for pipeline location and burial depth detection. Commonly used metal pipeline detectors are also ineffective against them. This makes it impossible for owners to accurately determine the specific location and burial depth of underground non-metallic pipelines, posing a significant challenge to subsequent pipeline operation management and network safety maintenance. Therefore, how to quickly, accurately, and conveniently detect the laying location and burial depth of underground non-metallic pipelines has become an urgent problem to be solved. Summary of the Invention
[0003] The purpose of this application is to provide a method for locating and detecting underground non-metallic pipelines, so as to quickly determine the location and burial depth of underground non-metallic pipelines, which facilitates the later management and maintenance of the pipelines.
[0004] This application provides a method for locating and detecting underground non-metallic pipelines, applicable to a multi-frequency microwave pipeline detector. The multi-frequency microwave pipeline detector includes a multi-frequency microwave signal transmitter, a microwave signal receiver, and a target indicator electrically connected to the microwave signal receiver. The method includes: moving the multi-frequency microwave pipeline detector within a target area; when the microwave signal receiver receives a microwave signal reflected from the underground non-metallic pipeline, marking a designated position of the target indicator on the ground as a first position; rotating the multi-frequency microwave pipeline detector such that there is an angle β between the indicating direction of the target indicator and the vertical direction, wherein β satisfies 90° > β > 0°; moving the multi-frequency microwave pipeline detector along the first direction, and when the microwave signal receiver receives the microwave signal, marking a designated position of the target indicator on the ground as a second position; and obtaining the burial depth D of the underground non-metallic pipeline based on β, the distance L between the first position and the second position, and a first calculation rule.
[0005] In the above implementation process, the multi-frequency microwave signal transmitter can emit microwave signals to the ground. The microwave signals can penetrate the surface soil layer. When the microwave signals come into contact with the non-metallic pipe, the microwave signal receiver can receive the microwave signals reflected by the underground non-metallic pipe. At this time, the target indicator (such as a laser signal light or infrared light) can emit an indicator signal to the ground to mark the position of the underground non-metallic pipe on the ground, which is the first position. Then, the multi-frequency microwave pipe detector moves along the first direction, and when the microwave signal receiver receives the microwave signal again, it marks the second position of the target indicator on the ground. During the movement, the angle β between the direction of the target indicator and the vertical direction is between 0 and 90°. Since the first position, the second position and the pipe burial depth point can form a triangular structure, the burial depth of the underground non-metallic pipe can be calculated using the first calculation rule based on the distance L between the first position and the second position and the angle β between the direction of the target indicator and the vertical direction.
[0006] In one possible implementation, before moving the multi-frequency microwave probe in the target area, the method further includes: creating an angle α between the pointing direction of the target indicator and the vertical direction, wherein α satisfies 90° > α > 0°.
[0007] In the above implementation process, before moving the multi-frequency microwave probe in the target area, an angle α is made between the pointing direction of the target indicator and the vertical direction. This ensures that the target indicator can point to the ground and prevents the microwave signal from touching the feet of the prober or the target indicator from pointing to the feet of the prober, which could lead to misjudgment of the results.
[0008] In one possible implementation, before marking the target indicator at a designated location on the ground as a first location, the method further includes: rotating the multi-frequency microwave probe so that the pointing direction of the target indicator is vertical; moving the multi-frequency microwave probe along a second direction opposite to the first direction; and marking the target indicator at a designated location on the ground as a first location when the microwave signal receiver receives the microwave signal reflected from the underground non-metallic pipe again.
[0009] In the above implementation process, since there is an angle α between the pointing direction of the target indicator and the vertical direction, when the microwave signal receiver first receives the microwave signal, the position indicated by the target indicator on the ground is not the actual position of the pipeline. Therefore, by rotating the multi-frequency microwave pipe detector to adjust the pointing direction of the target indicator to the vertical direction, and then moving the multi-frequency microwave pipe detector in the second direction opposite to the first direction, when the microwave signal receiver receives the microwave signal again, the position indicated by the target indicator on the ground is the actual position of the underground pipeline, which helps to improve the accuracy of detecting the location of underground non-metallic pipelines.
[0010] In one possible implementation, before moving the multi-frequency microwave probe in the target area, the method further includes rotating the multi-frequency microwave probe to adjust the pointing direction of the target transmitter to a vertical direction.
[0011] In the above implementation process, by adjusting the direction of the target indicator to vertical before moving the multi-frequency microwave pipe detector, the target indicator can accurately mark the actual location of the underground non-metallic pipe on the ground in one go when the microwave signal receiver receives the microwave signal.
[0012] In one possible implementation, the number of microwave signal receivers is two, and the two microwave signal receivers are spaced apart. The multi-frequency microwave pipe detector further includes two LED target indicator lights, each electrically connected to one of the two microwave signal receivers. The LED target indicator lights are adapted to illuminate when the microwave signal receiver electrically connected to them receives a microwave signal. The feature is that when the microwave signal receiver receives a microwave signal reflected from an underground non-metallic pipe, it marks a designated position on the ground as a first position for the target indicator, specifically including:
[0013] When one of the two LED target indicator lights is lit and the other is not lit, the multi-frequency microwave probe is rotated with the lit LED target indicator light as the pivot.
[0014] When both LED target indicator lights illuminate simultaneously, the target indicator is marked at the designated position on the ground as the first position.
[0015] In the above implementation, the number of microwave signal receivers is set to two, and the two microwave signal receivers are spaced apart. The multi-frequency microwave pipe detector also includes two LED target indicator lights, each electrically connected to one of the two microwave signal receivers, for detecting the direction of underground non-metallic pipes. Specifically, when one of the microwave signal transmitters receives a microwave signal reflected from the underground non-metallic pipe, the corresponding electrically connected LED target indicator light will illuminate, indicating that the underground non-metallic pipe has been detected. Then, the detection body rotates around this LED target indicator light as an axis until the other LED target indicator light also illuminates. When both LED target indicator lights illuminate simultaneously, the line connecting the two LED target indicator lights is parallel to the underground non-metallic pipe, indicating the direction of the underground non-metallic pipe. At this point, the position indicated by the target indicator on the ground is the first position.
[0016] In one possible implementation, the first direction is perpendicular to the line connecting the two LED target indicators.
[0017] In the above implementation process, the first direction is the direction perpendicular to the line connecting the two LED indicator lights, that is, the first direction is perpendicular to the direction of the pipe, so that the underground non-metallic pipe can be detected again when moving a certain distance along the first direction.
[0018] In one possible implementation, when the multi-frequency microwave probe is moved within the target area and the microwave signal receiver does not receive microwave signals reflected from the underground non-metallic pipe, the method further includes: adjusting the frequency of the multi-frequency microwave signal transmitter.
[0019] In the above implementation process, since the microwave frequency required for detecting non-metallic pipes at different burial depths is different, it is necessary to continuously adjust the frequency of the multi-frequency microwave signal transmitter during the detection of underground non-metallic pipes in order to ensure that underground non-metallic pipes can be detected.
[0020] In one possible implementation, the first operation rule includes: Attached Figure Description
[0021] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1This is a flowchart illustrating the method for locating and detecting underground non-metallic pipelines provided in some embodiments of this application. Detailed Implementation
[0023] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.
[0024] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this application, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0025] Please refer to Figure 1 This application provides a method for locating and detecting underground non-metallic pipelines, applicable to a multi-frequency microwave pipe detector. The multi-frequency microwave pipe detector includes a multi-frequency microwave signal transmitter, a microwave signal receiver, and a target indicator electrically connected to the microwave signal receiver. The method includes:
[0026] Step S10: Move the multi-frequency microwave pipe detector within the target area. When the microwave signal receiver receives the microwave signal reflected from the underground non-metallic pipe, mark the target indicator at the designated position on the ground as the first position.
[0027] Step S20: Rotate the multi-frequency microwave probe so that there is an angle β between the direction indicated by the target indicator and the vertical direction, where β satisfies 90°>β>0°.
[0028] Step S30: Move the multi-frequency microwave probe along the first direction, and when the microwave signal receiver receives the microwave signal, mark the target indicator at the designated position on the ground as the second position.
[0029] Step S40: Based on β, the distance L between the first and second positions, and the first calculation rule, the burial depth D of the underground non-metallic pipeline is obtained.
[0030] The first operation rule includes:
[0031] In the above implementation process, the multi-frequency microwave signal transmitter can emit microwave signals to the ground. The microwave signals can penetrate the surface soil layer. When the microwave signals come into contact with the non-metallic pipe, the microwave signal receiver can receive the microwave signals reflected by the underground non-metallic pipe. At this time, the target indicator (such as a laser signal light or infrared light) can emit an indicator signal to the ground to mark the position of the underground non-metallic pipe on the ground, which is the first position. Then, the multi-frequency microwave pipe detector moves along the first direction, and when the microwave signal receiver receives the microwave signal again, it marks the second position of the target indicator on the ground. During the movement, the angle β between the direction of the target indicator and the vertical direction is between 0 and 90°. Since the first position, the second position and the pipe burial depth point can form a triangular structure, the burial depth of the underground non-metallic pipe can be calculated using the first calculation rule based on the distance L between the first position and the second position and the angle β between the direction of the target indicator and the vertical direction.
[0032] Preferably, β is selected as 45°. Understandably, at this time, the burial depth D of the underground non-metallic pipeline is the distance L between the first position and the second position.
[0033] In one possible implementation, before moving the multi-frequency microwave probe in the target area, the method further includes: ensuring that there is an angle α between the direction of the target indicator and the vertical direction, where α satisfies 90° > α > 0°.
[0034] In the above implementation process, before moving the multi-frequency microwave probe in the target area, an angle α is made between the pointing direction of the target indicator and the vertical direction. This ensures that the target indicator can point to the ground and prevents the microwave signal from touching the feet of the prober or the target indicator from pointing to the feet of the prober, which could lead to misjudgment of the results.
[0035] In one possible implementation, before marking the target indicator at a designated location on the ground as a first location, the method further includes: rotating the multi-frequency microwave probe to make the pointing direction of the target indicator vertical; moving the multi-frequency microwave probe along a second direction opposite to the first direction; and marking the target indicator at a designated location on the ground as the first location when the microwave signal receiver receives the microwave signal reflected from the underground non-metallic pipe again.
[0036] In the above implementation process, since there is an angle α between the pointing direction of the target indicator and the vertical direction, when the microwave signal receiver first receives the microwave signal, the position indicated by the target indicator on the ground is not the actual position of the pipeline. Therefore, by rotating the multi-frequency microwave pipe detector to adjust the pointing direction of the target indicator to the vertical direction, and then moving the multi-frequency microwave pipe detector in the second direction opposite to the first direction, when the microwave signal receiver receives the microwave signal again, the position indicated by the target indicator on the ground is the actual position of the underground pipeline, which helps to improve the accuracy of detecting the location of underground non-metallic pipelines.
[0037] In one possible implementation, before moving the multi-frequency microwave probe in the target area, the method further includes rotating the multi-frequency microwave probe to adjust the pointing direction of the target transmitter to a vertical direction.
[0038] In the above implementation process, by adjusting the direction of the target indicator to vertical before moving the multi-frequency microwave pipe detector, the target indicator can accurately mark the actual location of the underground non-metallic pipe on the ground in one go when the microwave signal receiver receives the microwave signal.
[0039] In one possible implementation, the number of microwave signal receivers is two, and the two microwave signal receivers are spaced apart. The multi-frequency microwave pipe detector also includes two LED target indicator lights that are electrically connected to the two microwave signal receivers respectively. The LED target indicator lights are adapted to light up when the microwave signal receivers electrically connected to them receive microwave signals. The feature is that when the microwave signal receivers receive microwave signals reflected from underground non-metallic pipes, they mark a designated position on the ground as a first position for the target indicator lights, specifically including:
[0040] When one of the two LED target indicator lights is on and the other is off, rotate the multi-frequency microwave probe with the on LED target indicator light as the pivot.
[0041] When both LED target indicator lights are lit simultaneously, the designated position on the ground by the target indicator is the first position.
[0042] In the above implementation, the number of microwave signal receivers is set to two, and the two microwave signal receivers are spaced apart. The multi-frequency microwave pipe detector also includes two LED target indicator lights, each electrically connected to one of the two microwave signal receivers, for detecting the direction of underground non-metallic pipes. Specifically, when one of the microwave signal transmitters receives a microwave signal reflected from the underground non-metallic pipe, the corresponding electrically connected LED target indicator light will illuminate, indicating that the underground non-metallic pipe has been detected. Then, the detection body rotates around this LED target indicator light as an axis until the other LED target indicator light also illuminates. When both LED target indicator lights illuminate simultaneously, the line connecting the two LED target indicator lights is parallel to the underground non-metallic pipe, indicating the direction of the underground non-metallic pipe. At this point, the position indicated by the target indicator on the ground is the first position.
[0043] In one possible implementation, the first direction is perpendicular to the line connecting the two LED target indicators.
[0044] In the above implementation process, the first direction is the direction perpendicular to the line connecting the two LED indicator lights, that is, the first direction is perpendicular to the direction of the pipe, so that the underground non-metallic pipe can be detected again when moving a certain distance along the first direction.
[0045] In one possible implementation, when the multi-frequency microwave probe is moved within the target area and the microwave signal receiver does not receive the microwave signal reflected from the underground non-metallic pipe, the method further includes: adjusting the frequency of the multi-frequency microwave signal transmitter.
[0046] In the above implementation process, since the microwave frequency required for detecting non-metallic pipes at different burial depths is different, it is necessary to continuously adjust the frequency of the multi-frequency microwave signal transmitter during the detection of underground non-metallic pipes in order to ensure that underground non-metallic pipes can be detected.
[0047] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0048] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
[0049] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
Claims
1. A method for locating and detecting underground non-metallic pipelines, applicable to a multi-frequency microwave pipe detector, wherein the multi-frequency microwave pipe detector comprises a multi-frequency microwave signal transmitter, a microwave signal receiver, and a target indicator electrically connected to the microwave signal receiver, characterized in that, The method includes: The multi-frequency microwave pipe detector is moved within the target area. When the microwave signal receiver receives the microwave signal reflected from the underground non-metallic pipe, the location specified by the target indicator on the ground is marked as the first position. Rotate the multi-frequency microwave probe so that there is an angle β between the direction indicated by the target indicator and the vertical direction, wherein β satisfies 90°>β>0°; The multi-frequency microwave probe is moved along the first direction, and when the microwave signal receiver receives the microwave signal, the target indicator is marked at a second position on the ground. The burial depth D of the underground non-metallic pipeline is obtained based on β, the distance L between the first position and the second position, and the first calculation rule. The multi-frequency microwave pipe detector includes two microwave signal receivers, which are spaced apart. It also includes two LED target indicator lights electrically connected to each of the two microwave signal receivers. The LED target indicator lights are adapted to illuminate when a microwave signal receiver receives a microwave signal. When a microwave signal reflected from an underground non-metallic pipe is received, the microwave signal receiver marks a designated location on the ground as a first position, specifically including: When one of the two LED target indicator lights is lit and the other is not lit, the multi-frequency microwave probe is rotated with the lit LED target indicator light as the pivot. When both LED target indicator lights are lit simultaneously, the designated position of the target indicator on the ground is marked as the first position, and the first direction is the direction perpendicular to the line connecting the two LED target indicator lights, which is parallel to the underground non-metallic pipeline.
2. The method for locating and detecting underground non-metallic pipelines according to claim 1, characterized in that, Before moving the multi-frequency microwave probe in the target area, the method further includes: creating an angle α between the direction of the target indicator and the vertical direction, wherein α satisfies 90° > α > 0°.
3. The method for locating and detecting underground non-metallic pipelines according to claim 2, characterized in that, Before marking the target indicator's designated location on the ground as the first location, the method further includes: Rotate the multi-frequency microwave probe so that the target indicator is pointing in the vertical direction; The multi-frequency microwave pipe detector is moved along a second direction opposite to the first direction. When the microwave signal receiver receives the microwave signal reflected from the underground non-metallic pipe again, the location specified by the target indicator on the ground is marked as the first position.
4. The method for locating and detecting underground non-metallic pipelines according to claim 1, characterized in that, Before moving the multi-frequency microwave probe in the target area, the method further includes: Rotate the multi-frequency microwave probe to adjust the direction of the target indicator to the vertical direction.
5. The method for locating and detecting underground non-metallic pipelines according to any one of claims 1-4, characterized in that, When the multi-frequency microwave pipe detector is moved within the target area, and the microwave signal receiver does not receive the microwave signal reflected from the underground non-metallic pipe, the method further includes: Adjust the frequency of the microwave signal transmitter.
6. The method for locating and detecting underground non-metallic pipelines according to any one of claims 1-4, characterized in that, The first calculation rule includes: D = .