A multifunctional measuring device and method for basic information of municipal drainage pipelines

Abstract

The present invention discloses a multifunctional measuring device for basic information of municipal drainage pipelines, wherein the terminal assembly can be fixed on the upper end of the probe rod assembly, and the probe assembly is fixed on the bottom end of the probe rod assembly; the terminal assembly is electrically connected to the probe assembly; the probe assembly can measure multiple coordinate data of the inner wall on any cross section of the pipeline to be measured, and the terminal assembly can calculate the inner diameter, outer diameter and buried depth of the pipeline to be measured based on the multiple coordinate data of the probe assembly. The present invention also discloses a measuring method, wherein the present invention lowers the probe assembly into the pipeline to be measured through the probe rod assembly, performs measurement operations on the cross section of the pipeline to be measured through the probe assembly, and measures the inner diameter, outer diameter and buried depth of the pipeline to be measured and other related data in the terminal assembly. The overall structure is simple and easy to carry, and can effectively eliminate the errors caused by the cross-section measurement operation, and can measure multiple related data of the pipelines to be measured in the terminal assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of drainage pipes, and in particular to a multifunctional measuring device and method for basic information of municipal drainage pipes. Background Art

[0002] With the continuous development of municipal drainage network inspections in various regions across the country, the measurement of basic information data such as the inner diameter, outer diameter, and buried depth of municipal drainage pipes is particularly important. In addition, in the field of urban waterlogging prevention and control, the construction of urban drainage numerical models also requires the input of accurate basic pipeline information data. Due to the complex internal environment of underground drainage pipes, and the need to provide ventilation, emergency rescue and other support work during manual measurement underground, the cost of manual data collection is high and the measurement efficiency is low.

[0003] The existing Chinese utility model patent with application number CN201921176818.3 discloses a pipe diameter measuring tool, including a measuring rod and a holder. The length of the holder is less than the inner diameter of the wellhead. One end of the measuring rod is vertically connected to the holder. The end of the measuring rod away from the holder is provided with a level bubble, and the level bubble is perpendicular to the axis of the measuring rod. When measuring the diameter of the drainage pipe, the holder is used to clamp the drainage pipe mouth and the inner wall of the bottom of the pipe in turn, and the measuring tool is kept vertical by the level bubble. The surveyor marks the corresponding position of the wellhead on the measuring rod on the measuring rod, and the distance between the two marks is the diameter of the drainage pipe. This solution mainly reads the readings manually, with poor accuracy, and can only measure the inner diameter of the pipe, with a single function.

[0004] The existing Chinese utility model patent with application number 201720364726.2 discloses a pipeline inner diameter detection device, including: a light source and a first receiver arranged opposite to the light source, the light source and the first receiver are respectively arranged at the two ends of the pipeline, and the principle that the light generated by the light source propagates in a straight line in the pipeline is utilized. If the light reaches the first receiver, it means that the light is not blocked inside the pipeline, so half of the minimum inner diameter value of the pipeline should be greater than the distance between the light source and the center of the pipeline at this time. If the light does not reach the first receiver, it means that the light is blocked inside the pipeline, so half of the minimum inner diameter value of the pipeline should be less than the distance between the light source and the center of the pipeline at this time. This solution not only has a single function, but also cannot strictly ensure that the measurement operation occurs on the cross section of the pipeline.

[0005] The invention patent application with the existing application number CN202110264421.5 discloses a device for measuring the diameter of an underground pipeline. The measuring device consists of a fixed rod and a movable rod. The movable rod is moved so that the movable rod and the fixed rod are respectively against the upper and lower end surfaces inside the pipeline, and then the distance between the fixed rod and the movable rod is measured by a laser measuring instrument to measure the diameter of the pipeline. The present invention can intuitively display the diameter of the pipeline, which is convenient for operators to read, easy to operate, high in measurement efficiency, and effectively improves the measurement accuracy. However, the operation of the operator has errors, and it cannot completely ensure that the movable rod and the fixed rod are respectively against the upper and lower end surfaces inside the pipeline, so this solution still has a large error. Summary of the invention

[0006] The technical problem to be solved by the present invention is to solve the problem that traditional measuring tools have low precision and single function.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0008] A multifunctional measuring device for basic information of a municipal drainage pipeline, comprising a probe assembly, a terminal assembly and a probe assembly;

[0009] The terminal assembly can be fixed on the upper end of the probe assembly, and the probe assembly is fixed on the bottom end of the probe assembly; the terminal assembly is electrically connected to the probe assembly;

[0010] The probe assembly can measure multiple coordinate data of the inner wall of any cross section of the pipeline to be measured, and the terminal assembly can calculate the inner diameter, outer diameter and buried depth of the pipeline to be measured according to the multiple coordinate data of the probe assembly.

[0011] Advantages: The present invention lowers the probe assembly into the pipeline to be measured through the probe rod assembly, performs measurement operations on the cross section of the pipeline to be measured through the probe assembly, and processes and displays relevant data such as the inner diameter, outer diameter and buried depth of the pipeline to be measured in the terminal assembly. The overall structure is simple and easy to carry, and it strictly ensures that the measuring device performs measurement operations on the cross section of the pipeline to be measured, which can effectively eliminate the errors caused by non-cross-section measurement operations, and can obtain multiple basic information data of the pipeline to be measured during one measurement operation.

[0012] Preferably, the probe rod assembly comprises a telescopic rod, a level bubble, a terminal assembly bracket, a terminal assembly bracket connector and a graduated double-pass connector;

[0013] The level bubble is installed on the top of the telescopic rod, and the level bubble is perpendicular to the axis of the probe rod assembly; the terminal assembly can be fixed on the terminal assembly bracket, and the terminal assembly bracket is installed on the upper end of the telescopic rod through the terminal assembly bracket connector; the scaled double-pass connector is set on the telescopic rod.

[0014] Preferably, an annular scale is printed on the side walls of the telescopic rod and the graduated two-way connector.

[0015] Preferably, it also includes a data transmission line;

[0016] The interior of the telescopic rod of the probe assembly is a hollow metal tube or a plastic tube;

[0017] The data transmission line can pass through the probe rod assembly, and two ends of the data transmission line are respectively connected to the probe assembly and the terminal assembly.

[0018] Preferably, the probe assembly comprises an upper cross bar, a vertical bar, a lower cross bar, a support base, a probe bracket, a first distance measuring sensor, a second distance measuring sensor, a third distance measuring sensor, a fourth distance measuring sensor, a transverse connector, a longitudinal connector, a common three-way connector and a three-way connector with a scale;

[0019] The upper crossbar, the vertical bar and the telescopic rod are connected by a three-way connector with scales; the lower crossbar, the vertical bar and the supporting base are connected by a common three-way connector; the upper crossbar and the lower crossbar are both located on the same side of the vertical bar;

[0020] The probe bracket comprises a transverse bracket and a vertical bracket, wherein the vertical bracket is fixed to the vertical rod via a transverse connecting piece, and the transverse bracket is fixed to the lower crossbar via a longitudinal connecting piece;

[0021] The first distance measuring sensor is arranged on the side wall of the horizontal bracket, the second distance measuring sensor is arranged on the side wall at the intersection of the horizontal bracket and the vertical bracket, and the third distance measuring sensor and the fourth distance measuring sensor are arranged on the side wall of the vertical bracket.

[0022] Preferably, the second ranging sensor, the third ranging sensor and the fourth ranging sensor are located on the same vertical plane.

[0023] Preferably, the terminal assembly includes a terminal body, a data display module, a USB interface, a data processing module, a data storage module and a power module;

[0024] The data storage module is arranged at the front end of the terminal body, the USB interface is arranged at the lower end of the terminal body, and the data processing module, the data storage module and the power supply module are all arranged inside the terminal body;

[0025] The power module is connected to the data display module, the data processing module and the data storage module;

[0026] The input end of the data processing module is respectively connected to the probe assembly, and the output end is respectively connected to the data storage module and the data display module.

[0027] Preferably, the data processing module has a built-in municipal drainage pipe "inner diameter-wall thickness" database.

[0028] The present invention also discloses a method for multifunctional measurement of basic information of municipal drainage pipelines using the above method, comprising the following steps:

[0029] S1. The measurement personnel need to assemble the measuring device first, and then put it into the inspection well. After the assembly is completed, the length of the telescopic rod is adjusted continuously according to the depth of the drainage pipe. After the support base touches the bottom, the probe rod is straightened, and the probe rod is moved back and forth to send the probe assembly into the pipe mouth of the pipe to be measured. The upper cross bar of the probe assembly is tightly hooked on the top of the pipe to be measured, and the probe rod is fine-tuned by observing the level bubble to ensure its verticality;

[0030] S2. Slightly rotate the probe rod around the vertical axis and perform the measurement operation. Click the measurement button of the terminal component, and the data display module can display the distance measurement results of the first distance measurement sensor, the second distance measurement sensor, the third distance measurement sensor and the fourth distance measurement sensor in real time, and gradually adjust the probe rod component so that the second distance measurement sensor, the third distance measurement sensor and the fourth distance measurement sensor are strictly located on a certain cross section of the pipeline to be measured;

[0031] S3. The inner diameter of the pipe to be tested can be calculated through the data processing module; the wall thickness of the pipe to be tested can be determined through the municipal drainage pipe "inner diameter-wall thickness" database built into the data processing module, and then the outer diameter of the pipe to be tested can be obtained; the scale reading of the inspection wellhead probe assembly is recorded at this time, and after manually entering it into the data processing module, the data processing module can also calculate the buried depth information data of the pipe to be tested.

[0032] Preferably, in step S2, when the data display module shows that the distance measured by the first ranging sensor is equal to the distance measured by the second ranging sensor, it can be considered that the line connecting the first ranging sensor and the second ranging sensor is parallel to the longitudinal axis of the pipeline to be measured, thereby ensuring that the lines connecting the second ranging sensor, the third ranging sensor and the fourth ranging sensor are strictly located on a certain cross section of the pipeline to be measured.

[0033] Preferably, during the measurement process of the device, the four distance measuring sensors are completely exposed to the air or completely immersed in water, that is, the four distance measuring sensors are kept working in the same medium.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] (1) The measuring device of the present invention is small in size, simple in structure, easy to assemble, detachable for storage, easy to carry, and convenient for construction sites and field operations. During one measurement operation, basic information of the pipeline such as the inner diameter, outer diameter, and buried depth of the pipeline to be measured can be obtained, which saves operation costs and improves measurement efficiency.

[0036] (2) The probe assembly of the present invention is provided with four distance measuring sensors. When the distance measured by the first distance measuring sensor is equal to the distance measured by the second distance measuring sensor, it can be considered that the line connecting the first distance measuring sensor and the second distance measuring sensor is parallel to the longitudinal axis of the pipeline to be measured, thereby ensuring that the lines connecting the second distance measuring sensor, the third distance measuring sensor and the fourth distance measuring sensor are strictly located on a certain cross section of the pipeline to be measured. The measuring device performs measurement operations on the cross section of the pipeline to be measured, which can effectively eliminate errors caused by non-cross section measurement operations.

[0037] (3) In the present invention, it is not required that the measuring device coincide with the center line of the cross section of the pipe to be measured, which reduces the number of working steps and optimizes the measuring process.

[0038] (4) The terminal assembly of the present invention uses a novel multi-sensor fusion algorithm and a fuzzy matching algorithm to respectively calculate the inner diameter and outer diameter of the pipeline to be measured. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic diagram of the overall structure of a multifunctional measuring device for basic information of a municipal drainage pipeline according to an embodiment of the present invention;

[0040] Figure 2 It is a schematic diagram of the first section of the probe rod assembly of the multifunctional measuring device for basic information of municipal drainage pipelines according to an embodiment of the present invention;

[0041] Figure 3 It is a schematic diagram of the terminal components of the multifunctional measuring device for basic information of municipal drainage pipelines according to an embodiment of the present invention;

[0042] Figure 4 It is a structural schematic diagram of a probe assembly of a multifunctional measuring device for basic information of a municipal drainage pipeline according to an embodiment of the present invention;

[0043] Figure 5 It is a three-dimensional schematic diagram of a probe bracket of a probe assembly of a multifunctional measuring device for basic information of a municipal drainage pipeline according to an embodiment of the present invention;

[0044] Figure 6 A cross-sectional diagram showing the measurement principle of a multifunctional measuring device for basic information of a municipal drainage pipeline according to an embodiment of the present invention;

[0045] Figure 7 A cross-sectional diagram showing the measurement principle of a multifunctional measuring device for basic information of a municipal drainage pipeline according to an embodiment of the present invention;

[0046] In the figure: 1. probe rod assembly; 11. telescopic rod; 12. level bubble; 13. terminal assembly bracket; 14. terminal assembly bracket connector; 15. two-way connector with scale; 2. terminal assembly; 21. terminal body; 22. data display module; 23. USB interface; 24. measurement button; 3. probe assembly; 31. upper cross bar; 32. vertical bar; 33. lower cross bar; 34. support base; 35. probe bracket; 36. first distance measuring sensor; 37. second distance measuring sensor; 38. third distance measuring sensor; 39. fourth distance measuring sensor; 310. horizontal connector; 311. vertical connector; 312. ordinary three-way connector; 313. three-way connector with scale. DETAILED DESCRIPTION

[0047] In order to facilitate those skilled in the art to understand the technical solution of the present invention, the technical solution of the present invention is further described in conjunction with the accompanying drawings of the specification.

[0048] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0049] See also Figure 1 This embodiment discloses a multifunctional measuring device for basic information of a municipal drainage pipeline, including a probe rod assembly 1, a terminal assembly 2 and a probe assembly 3.

[0050] The terminal assembly 2 can be fixed on the upper end of the probe assembly 1 , and the probe assembly 3 is fixed on the lower end of the probe assembly 1 ; the terminal assembly 2 is electrically connected to the probe assembly 3 .

[0051] See also Figure 2 The probe assembly 1 includes a telescopic rod 11, a level bubble 12, a terminal assembly bracket 13, a terminal assembly bracket connector 14, and a scaled double-pass connector 15. The telescopic rod 11 is divided into a shorter first section and a longer tail section, which are connected by a scaled double-pass connector 15. The level bubble 12 is installed on the first section of the telescopic rod 11 for easy disassembly. The level bubble 12 is perpendicular to the axis of the probe assembly 1. When the probe assembly 1 is in a vertical state, the bubble in the level bubble 12 is in the middle.

[0052] The terminal assembly 2 can be fixed on the terminal assembly bracket 13 , and the terminal assembly bracket 13 is installed on the upper end of the telescopic rod 11 through the terminal assembly bracket connector 14 .

[0053] When measuring the basic information of the drainage pipe, the surveyor can determine whether the measuring device is vertical by observing whether the level bubble 12 is in a horizontal state, and then the surveyor can ensure that the measuring device is vertical. The terminal component 2 can be fixed on the terminal component bracket 13, or the surveyor can hold it in hand, so that the surveyor can carry out the measurement work and read the data.

[0054] See also Figure 3 The terminal assembly 2 includes a terminal body 21, a data display module 22, a USB interface 23, a data processing module (not shown), a data storage module (not shown) and a power module (not shown). The data display module 22 is arranged at the front end of the terminal body 21, the USB interface 23 is arranged at the lower end of the terminal body 21, and the data processing module, the data storage module and the power module are all arranged inside the terminal body 21. The power module is connected to the data display module 22, the data processing module and the data storage module to supply power to each component.

[0055] The data processing module is provided with a processing program algorithm. The input end of the data processing module is respectively connected to the first distance measuring sensor 36, the second distance measuring sensor 37, the third distance measuring sensor 38 and the fourth distance measuring sensor 39 for receiving and processing the distance measuring result. Specifically, the output cables of the first distance measuring sensor 36, the second distance measuring sensor 37, the third distance measuring sensor 38 and the fourth distance measuring sensor 39 are connected into one strand, extended into the interior of the telescopic rod 11, and extended from the head of the telescopic rod 11 to the access terminal assembly 2. The output end of the data processing module is respectively connected to the data storage module and the data display module 22. The data display module 22 can display the distance measuring result in real time, and the data storage module can store the corresponding distance measuring result data. The USB interface 23 has the functions of transmitting data and charging.

[0056] See also Figure 4 and Figure 5 The probe assembly 3 includes an upper cross bar 31, a vertical bar 32, a lower cross bar 33, a support base 34, a probe bracket 35, a first distance measuring sensor 36, a second distance measuring sensor 37, a third distance measuring sensor 38, a fourth distance measuring sensor 39, a transverse connector 310, a longitudinal connector 311, a common three-way connector 312, and a three-way connector 313 with a scale.

[0057] The upper cross bar 31, the vertical bar 32 and the telescopic rod 11 are connected through a three-way connector 313 with scales; specifically, the telescopic rod 11 is located at the upper end of the three-way connector 313 with scales, the vertical bar 32 is located at the lower end of the three-way connector 313 with scales, and the upper cross bar 31 is located on the left side of the three-way connector 313 with scales. The axes of the vertical bar 32 and the telescopic rod 11 are overlapped, and the upper cross bar 31 is perpendicular to the vertical bar 32.

[0058] The lower cross bar 33, the vertical bar 32 and the support base 34 are connected by a common three-way connector 312; specifically, the vertical bar 32 is located at the upper end of the common three-way connector 312, the support base 34 is located at the lower end of the common three-way connector 312, and the lower cross bar 33 is located on the left side of the common three-way connector 312. The vertical bar 32, the telescopic rod 11 and the support base 34 are located on the same axis, and the upper cross bar 31, the vertical bar 32 and the lower cross bar 33 are in a "C" shape.

[0059] The probe bracket 35 is an "L"-shaped structure, having a transverse bracket and a vertical bracket. The vertical bracket of the probe bracket 35 is fixed to the vertical rod 32 through a transverse connector 310, and the transverse bracket of the probe bracket 35 is fixed to the lower crossbar 33 through a longitudinal connector 311. The first distance sensor 36 is arranged on the side wall of the transverse bracket, the second distance sensor 37 is arranged on the side wall at the intersection of the transverse bracket and the vertical bracket, and the third distance sensor 38 and the fourth distance sensor 39 are arranged on the side wall of the vertical bracket, wherein the second distance sensor 37, the third distance sensor 38, and the fourth distance sensor 39 are located on the same vertical plane.

[0060] See also Figure 5 In some embodiments, the second ranging sensor 37 and the fourth ranging sensor 39 can be arranged on the same side wall, and the third ranging sensor 38 can be arranged on the other opposite side wall to avoid the three ranging sensors all measuring the coordinates of the same side, thereby ensuring the measurement accuracy of the device.

[0061] When actually measuring the basic information of the drainage pipe, the surveyor needs to assemble the measuring device first, and then put it into the inspection well. According to the depth of the drainage pipe, the length of the telescopic rod 11 is continuously adjusted, and the probe rod is straightened after the support base 34 touches the bottom. The probe rod is moved back and forth to send the probe assembly 3 into the mouth of the pipe to be measured, and the upper cross bar 31 of the probe assembly 3 is tightly hooked on the top of the pipe to be measured. The probe rod is fine-tuned by observing the level bubble 12 to ensure its verticality; then the probe rod is slightly rotated around this vertical axis and the measurement operation is performed.

[0062] By clicking the measurement button 24 of the terminal component 2 , the data display module 22 can display the distance measurement results of the first distance measurement sensor 36 , the second distance measurement sensor 37 , the third distance measurement sensor 38 and the fourth distance measurement sensor 39 in real time.

[0063] See also Figure 6 and Figure 7When the distance measured by the first distance measuring sensor 36 is equal to the distance measured by the second distance measuring sensor 37, it can be considered that the line connecting the distance measured by the first distance measuring sensor 36 and the second distance measuring sensor 37 is parallel to the longitudinal axis of the pipeline to be measured, and it can be considered that the vertical plane formed by the second distance measuring sensor 37, the third distance measuring sensor 38 and the fourth distance measuring sensor 39 is strictly located on a certain cross section of the pipeline to be measured. Therefore, the second distance measuring sensor 37, the third distance measuring sensor 38 and the fourth distance measuring sensor 39 can measure the coordinates of the three pipelines to be measured on the cross section, and the data processing module can calculate the inner diameter of the pipeline to be measured based on the coordinates of the three pipelines to be measured. That is, the four distance measuring sensors of the present invention can strictly ensure that the measuring device performs measurement operations on a certain cross section of the pipeline to be measured, and can effectively eliminate the errors caused by non-cross-section measurement operations.

[0064] It should be noted that the measurement principle in the above scheme is: any three non-collinear points (x 1 ,y 1 ), (x 2 ,y 2 ) and (x 3 ,y 3 ) can determine the coordinates of the center of a circle (x 0 ,y 0 ) and diameter D.

[0065] In this embodiment, refer to Figure 6 and Figure 7 , the distance between the second distance measuring sensor 37 and the surface where the support base 34 is located is denoted as h Ⅰ , the vertical distance between the second distance measuring sensor 37 and the third distance measuring sensor 38 is h 23 , the vertical distance between the third distance measuring sensor 38 and the fourth distance measuring sensor 39 is h 34 , then the vertical distance between the second distance measuring sensor 37 and the fourth distance measuring sensor 39 can be expressed as h 24 =h 23 +h 34 .

[0066] If the coordinates of the second distance measuring sensor 37 are defined as (0, 0), then the coordinates of the third distance measuring sensor 38 are (0, h 23 ), the coordinates of the fourth distance measuring sensor 39 are (0, h 24 ), if the horizontal distances from the inner wall of the pipeline to be measured by the second distance measuring sensor 37, the third distance measuring sensor 38 and the fourth distance measuring sensor 39 are respectively l 20 , l 30 and l 40 , so they can be converted into the three corresponding pipe wall coordinates of the tested pipe respectively (l 20 ,0)、(l30 ,h 23 ) and (l 40 ,h 24 ). Because the wall coordinates (l 20 ,0)、(l 30 ,h 23 ) and (l 40 ,h 24 ) These three points are not collinear, so the center of the circle (x 0 ,y 0 ) and inner diameter D. The calculation process is as follows:

[0067] (1) Assignment:

[0068] x 1 = l 20 , x 2 = l 30 , x 3 = l 40 ;

[0069] y 1 =0,y 2 =h 23 ,y 3 =h 24 .

[0070] (2) Programming solution:

[0071] a=x 1 -x 2

[0072] b=y 1 -y 2

[0073] c=x 1 -x 3

[0074] d=y 1 -y 3

[0075]

[0076]

[0077] Then the center of the pipe to be tested (x 0 ,y 0 ) and D i :

[0078]

[0079]

[0080]

[0081] (3) After multiple measurements, the pipe inner diameter D can be taken as the average or maximum value:

[0082]

[0083] Through the above process, the data processing module of this embodiment can determine the center of the pipeline to be tested (x 0 ,y 0 ) and inner diameter D.

[0084] Furthermore, the data processing module 22 has a built-in municipal drainage pipe "inner diameter-wall thickness" database, which is based on "Concrete and reinforced concrete drainage pipes" (GB / T 11836-2009), "Prestressed concrete pipes" (GB / T 5696-2006), "Uniform polyvinyl chloride (PVC-U) structural wall pipe system for buried drainage Part 1: Double-wall corrugated pipe" (GB / T 18477.1-2007), "Uniform polyvinyl chloride (PVC-U) structural wall pipe system for buried drainage Part 2: Reinforced pipe" (GB / T18477.2-2011), "Uniform polyvinyl chloride (PVC-U) structural wall pipe system for buried drainage Part 3: Axial hollow wall pipe" (GB / T 18477.3-2019), "Polypropylene (PP) structural wall pipe system for buried drainage and sewage Part 1: Polypropylene double-wall corrugated pipe" (GB / T 35451.1-2017), "Polypropylene (PP) Structural Wall Pipe System for Buried Drainage and Sewage Part 2: Polypropylene Wrapped Structural Wall Pipe" (GB / T 35451.2-2018) and other standards. Thus, the wall thickness r of the pipe to be tested can be determined, and then the outer diameter of the pipe to be tested can be determined:

[0085] D′=D+2r.

[0086] Furthermore, the effective length H of the probe assembly 1 is 探 Denoted as:

[0087] H 探 =h Ⅰ +h 23 +h 34 +h Ⅱ

[0088] Among them, h Ⅰ h is the vertical distance between the second distance measuring sensor 37 and the surface where the support base 34 is located, 23 is the vertical distance between the second distance measuring sensor 37 and the third distance measuring sensor 38, h 34 is the vertical distance between the third distance measuring sensor 38 and the fourth distance measuring sensor 39, h Ⅱrepresents the vertical distance between the fourth distance measuring sensor 39 and the central axis of the upper crossbar 31 .

[0089] The distance from the center axis of the upper crossbar 31 to the inspection well opening can be read from the scale of the telescopic rod 11 and is recorded as H 顶 ; The distance from the inspection wellhead to the pipeline siltation surface can be expressed as H 顶 +H 探 .

[0090] The ordinate of the highest point on the inner wall of the pipeline to be measured on the cross section of the pipeline measurement operation can be expressed as y 0 +D / 2, then the ordinate of the highest point on the outer wall of the pipe to be tested is Therefore, the distance from the highest point on the outer wall of the measured pipeline to the siltation surface of the pipeline is The buried depth of the pipeline to be inspected is H 埋 for:

[0091]

[0092] In the present invention, the measuring device is small in size, simple in structure, easy to assemble, detachable for storage, easy to carry, and convenient for construction sites and field operations. It is not required that the measuring device coincide with the center line of the cross section of the pipeline to be measured, which reduces the working steps and optimizes the measuring process.

[0093] The present invention uses a novel multi-sensor fusion algorithm and a fuzzy matching algorithm to respectively calculate the inner diameter and the outer diameter of the pipeline to be measured.

[0094] The present invention can obtain basic pipeline information such as the inner diameter, outer diameter and buried depth of the pipeline to be measured during one measurement operation, thereby saving operation costs and improving measurement efficiency.

[0095] The present invention also discloses a measurement method using the above-mentioned measurement device, comprising the following steps:

[0096] S1. The measurement personnel need to assemble the measurement device first, put it into the inspection well after assembly, and adjust the length of the telescopic rod 11 according to the depth of the drainage pipe. After the support base 34 touches the bottom, straighten the probe rod, move the probe rod back and forth to send the probe assembly 3 into the mouth of the pipe to be measured, and use the upper cross bar 31 of the probe assembly 3 to tightly hook the top of the pipe to be measured, and fine-tune the probe rod by observing the level bubble 12 to ensure its verticality;

[0097] S2, slightly rotate the probe rod around the vertical axis and perform measurement. Click the measurement button 24 of the terminal assembly 2, and the data display module 22 can display the distance measurement results of the first distance measurement sensor 36, the second distance measurement sensor 37, the third distance measurement sensor 38 and the fourth distance measurement sensor 39 in real time, and gradually adjust the probe rod assembly 1 so that the second distance measurement sensor 37, the third distance measurement sensor 38 and the fourth distance measurement sensor 39 are strictly located on a certain cross section of the pipeline to be measured.

[0098] S3. The inner diameter of the pipe to be tested can be calculated through the data processing module; the wall thickness of the pipe to be tested can be determined through the municipal drainage pipe "inner diameter-wall thickness" database built into the data processing module, and then the outer diameter of the pipe to be tested can be obtained; the scale reading of the inspection wellhead probe assembly 1 is recorded at this time, and after manually entering it into the data processing module, the data processing module can also calculate the buried depth information data of the pipe to be tested.

[0099] During the measurement process of the device, the four distance measuring sensors are completely exposed to the air or completely immersed in water, that is, the four distance measuring sensors are kept working in the same medium, so as to further ensure the measurement accuracy of the device.

[0100] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-limiting from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any reference numerals in the claims should not be regarded as limiting the claims involved.

[0101] The above-described embodiments merely represent implementation methods of the invention. The protection scope of the present invention is not limited to the above-described embodiments. For those skilled in the art, several modifications and improvements may be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A multifunctional measuring device for basic information of municipal drainage pipelines, characterized in that: It comprises a probe rod assembly (1), a terminal assembly (2) and a probe assembly (3); The terminal assembly (2) can be fixed on the upper end of the probe assembly (1), and the probe assembly (3) is fixed on the lower end of the probe assembly (1); the terminal assembly (2) is electrically connected to the probe assembly (3); The probe assembly (3) is capable of measuring a plurality of coordinate data of the inner wall of any cross section of the pipeline to be measured, and the terminal assembly (2) is capable of calculating the inner diameter, outer diameter and buried depth of the pipeline to be measured based on the plurality of coordinate data of the probe assembly (3); The probe assembly (3) comprises an upper crossbar (31), a vertical bar (32), a lower crossbar (33), a support base (34), a probe bracket (35), a first distance measuring sensor (36), a second distance measuring sensor (37), a third distance measuring sensor (38), a fourth distance measuring sensor (39), a transverse connecting piece (310), a longitudinal connecting piece (311), a common three-way connecting piece (312) and a three-way connecting piece with scale (313); The upper cross bar (31), the vertical bar (32) and the telescopic rod (11) are connected via a three-way connector (313) with scales; the lower cross bar (33), the vertical bar (32) and the supporting base (34) are connected via a common three-way connector (312); the upper cross bar (31) and the lower cross bar (33) are both located on the same side of the vertical bar (32); The probe bracket (35) comprises a transverse bracket and a vertical bracket, wherein the vertical bracket is fixed to the vertical rod (32) via a transverse connecting piece (310), and the transverse bracket is fixed to the lower crossbar (33) via a longitudinal connecting piece (311); The first distance measuring sensor (36) is arranged on the side wall of the horizontal bracket, the second distance measuring sensor (37) is arranged on the side wall at the intersection of the horizontal bracket and the vertical bracket, and the third distance measuring sensor (38) and the fourth distance measuring sensor (39) are arranged on the side wall of the vertical bracket; The second distance measuring sensor (37), the third distance measuring sensor (38) and the fourth distance measuring sensor (39) are located on the same vertical plane.

2. The multifunctional measuring device for basic information of municipal drainage pipes according to claim 1 is characterized in that: The probe rod assembly (1) comprises a telescopic rod (11), a level bubble (12), a terminal assembly bracket (13), a terminal assembly bracket connector (14) and a scaled double-pass connector (15); The level bubble (12) is installed on the top of the telescopic rod (11), and the level bubble (12) and the axis of the probe rod assembly (1) are perpendicular to each other; the terminal assembly (2) can be fixed on the terminal assembly bracket (13), and the terminal assembly bracket (13) is installed on the upper end of the telescopic rod (11) through the terminal assembly bracket connector (14); the scaled double-pass connector (15) is arranged on the telescopic rod (11).

3. The multifunctional measuring device for basic information of municipal drainage pipes according to claim 2 is characterized in that: An annular scale is printed on the side walls of the telescopic rod (11) and the graduated two-way connector (15).

4. The multifunctional measuring device for basic information of municipal drainage pipes according to claim 2 is characterized in that: Also included are data transmission lines; The interior of the telescopic rod (11) of the probe assembly (1) is a hollow metal tube or a plastic tube; The data transmission line can pass through the probe rod assembly (1), and two ends of the data transmission line are respectively connected to the probe assembly (3) and the terminal assembly (2).

5. The multifunctional measuring device for basic information of municipal drainage pipelines according to claim 1 is characterized in that: The terminal assembly (2) comprises a terminal body (21), a data display module (22), a USB interface (23), a data processing module, a data storage module and a power supply module; The data display module (22) is arranged at the front end of the terminal body (21), the USB interface (23) is arranged at the lower end of the terminal body (21), and the data processing module, the data storage module and the power supply module are all arranged inside the terminal body (21); The power supply module is connected to the data display module (22), the data processing module and the data storage module; The input end of the data processing module is respectively connected to the probe assembly (3), and the output end is respectively connected to the data storage module and the data display module (22).

6. The multifunctional measuring device for basic information of municipal drainage pipes according to claim 5 is characterized in that: The data processing module has a built-in municipal drainage pipe "inner diameter-wall thickness" database.

7. A measurement method using the multifunctional measuring device for basic information of municipal drainage pipes according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1. The measurement personnel need to assemble the measurement device first, and then put it into the inspection well. After the assembly is completed, the length of the telescopic rod (11) is continuously adjusted according to the depth of the drainage pipe. After the support base (34) touches the bottom, the probe rod is straightened, and the probe rod is moved back and forth to send the probe assembly (3) into the pipe opening of the pipe to be measured. The upper cross bar (31) of the probe assembly (3) is tightly hooked on the top of the pipe to be measured, and the probe rod is fine-tuned by observing the level bubble (12) to ensure that it is vertical; S2, slightly rotating the probe rod around the vertical axis and performing a measurement operation; clicking the measurement button of the terminal component (2), the data display module (22) can display the distance measurement results of the first distance measurement sensor (36), the second distance measurement sensor (37), the third distance measurement sensor (38) and the fourth distance measurement sensor (39) in real time, and gradually adjusting the probe rod component (1) so that the second distance measurement sensor (37), the third distance measurement sensor (38) and the fourth distance measurement sensor (39) are strictly located on a certain cross section of the pipeline to be measured; S3. The inner diameter of the pipeline to be tested can be calculated through the data processing module; the wall thickness of the pipeline to be tested can be determined through the municipal drainage pipeline "inner diameter-wall thickness" database built into the data processing module, and then the outer diameter of the pipeline to be tested can be obtained; the scale reading of the inspection wellhead probe assembly (1) at this time is recorded and manually input into the data processing module, and the data processing module can also calculate the buried depth information data of the pipeline to be tested.

8. The measuring method of the multifunctional measuring device for basic information of municipal drainage pipelines according to claim 7 is characterized in that: During the measurement process of the device, the four distance measuring sensors are completely exposed to the air or completely immersed in water, that is, the four distance measuring sensors are kept working in the same medium.

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