Intelligent detection device, method and equipment for measuring pipe diameter and wall thickness through laser

Abstract

The invention discloses an intelligent detection device, method and equipment for measuring the pipe diameter and the wall thickness through laser, and the device comprises a case panel, and further comprises a first probe which is disposed on the upper side of the case panel and is used for measuring the first distance between the first probe and the upper end of the pipe diameter; the second probe is arranged on the lower side of the case panel and used for measuring the second distance between the second probe and the lower end of the pipe diameter; the third probe is arranged on the rear side of the case panel and used for measuring a third distance between the third probe and the inner side of the pipe diameter; the vertical distance between the probe and the upper end of the pipe diameter is measured and determined through the upper side probe, the vertical distance between the probe and the lower end of the pipe diameter is determined through the lower side probe, the inclination distance between the probe and the inner side of the pipe diameter is determined through the rear side probe, and the pipe diameter and the wall thickness are obtained through calculation by means of relevant parameters through the control unit. Therefore, the pipe diameter and the wall thickness of the to-be-measured pipe fitting can be accurately measured, and compared with manual measurement, the efficiency and the accuracy are higher.

Description

Technical Field

[0001] The invention relates to the technical field of laser measurement, and in particular to an intelligent detection device, method and equipment for laser measurement of pipe diameter and wall thickness. Background Art

[0002] Laser measurement has the characteristics of non-contact, high precision and real-time, providing an efficient, safe and environmentally friendly way to measure pipe diameter and wall thickness, which helps to improve product quality and production efficiency.

[0003] Laser measurement uses high-precision collimated lasers mounted on both sides of the chassis and uses triangulation to determine the distance by measuring the time it takes for a laser pulse to reflect back from the target. Laser distance meters can provide high-precision measurements and are suitable for a variety of environments and conditions. In industrial measurement, laser measurement technology is often used to measure pipe diameters and wall thicknesses. It can provide fast and accurate measurement results without contacting the object being measured, thereby avoiding possible damage or deformation.

[0004] The existing manual calibration and measurement methods of pipe diameter and thickness are time-consuming and labor-intensive, with low accuracy and low efficiency. Summary of the invention

[0005] The main purpose of the present invention is to provide an intelligent detection device, method and equipment for laser measuring pipe diameter and wall thickness, aiming to solve the existing technical problems.

[0006] To achieve the above object, the present invention provides an intelligent detection device for laser measuring pipe diameter and wall thickness, comprising a chassis panel, and further comprising:

[0007] Probe 1, disposed on the upper side of the chassis panel, for measuring a first distance between the probe and the upper end of the pipe diameter;

[0008] Probe 2, disposed on the lower side of the chassis panel, for measuring a second distance between the probe and the lower end of the pipe diameter; and

[0009] Probe three is arranged at the rear side of the chassis panel and is used to measure the third distance between it and the inner side of the pipe diameter.

[0010] Furthermore, the probe three is arranged at an angle φ with respect to a direction perpendicular to the pipe diameter.

[0011] Furthermore, the probe 1, the probe 2 and the probe 3 are all laser probes.

[0012] The method for measuring the pipe diameter and wall thickness by laser, using the intelligent detection device for measuring the pipe diameter and wall thickness by laser as mentioned above, specifically comprises the following steps:

[0013] Calibration stage: introduce the calibration object, and obtain the distance parameters between probe 1 and probe 2 and the relative height difference parameters between probe 1 and probe 3 in turn;

[0014] Measurement phase: Place a new pipe to be measured, re-measure the new distance parameters between the probe and the pipe to be measured, and measure the pipe diameter and wall thickness of the pipe to be measured based on the new distance.

[0015] Furthermore, the distance parameter between the probe 1 and the probe 2 is the sum of a first distance x between the probe 1 and the calibration object, a second distance z between the probe 2 and the calibration object, and a thickness of the calibration object.

[0016] Furthermore, the step of obtaining the relative height difference parameter between the positions of the probe 1 and the probe 3 includes:

[0017] Probe 3 obtains the third distance y between it and the inner side of the pipe diameter, and combined with the known angle φ between probe 3 and the vertical calibration object, it can be known that the fourth distance y'=y*cosφ between probe 3 and the calibration object;

[0018] The relative height difference p between the positions of probe 1 and probe 3 is obtained, where the relative height difference p is the absolute value of x-y'.

[0019] Furthermore, the step of measuring the diameter and wall thickness of the pipe to be measured includes:

[0020] Measure a first distance x between the probe 1 and the tube to be measured, a second distance z between the probe 2 and the tube to be measured, and a third distance y between the probe 3 and the inner side of the tube to be measured;

[0021] From the newly measured data y, according to y"=y*cosφ, the new third distance y" between the probe 3 and the tube to be measured is obtained;

[0022] By knowing the fifth distance d between the probe one and the probe two, the diameter of the pipe to be measured = the fifth distance d-the first distance x-the second distance z, the wall thickness = the fifth distance d-the fourth distance y"-the second distance z-the relative height difference p = the fifth distance d-the fourth distance y*cosφ-the second distance z-the relative height difference p.

[0023] An electronic device comprises: a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the computer program is configured to implement the steps of the above-mentioned method for measuring pipe diameter and wall thickness by laser.

[0024] The beneficial effects of the present invention are embodied in:

[0025] The present invention determines the vertical distance from the probe to the upper end of the pipe diameter by measuring with the upper probe, determines the vertical distance from the probe to the lower end of the pipe diameter by the lower probe, determines the inclined distance between the probe and the inner side of the pipe diameter by the rear probe, and obtains the pipe diameter and wall thickness by calculating with relevant parameters through the control unit. Thus, the pipe diameter and wall thickness of the pipe to be measured can be measured more accurately, which is more efficient and accurate than manual measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of a laser measuring device in an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the principle of laser measurement of calibration objects in an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of the principle of laser measurement of the pipe diameter to be measured in an embodiment of the present invention;

[0029] Figure 4 This is a flow chart of a measurement method in an embodiment of the present invention;

[0030] Figure 5 This is a flow chart of the measurement method (calibration phase) in an embodiment of the present invention;

[0031] Figure 6 This is a flow chart of a measurement method (measurement phase) in an embodiment of the present invention;

[0032] Figure 7 It is a block diagram of a detection algorithm in an embodiment of the present invention;

[0033] Figure 8 Schematic diagram of the electrical principle in the embodiment of the present invention.

[0034] Description of reference numerals:

[0035] 1. Probe 1; 2. Probe 2; 3. Probe 3; 4. Chassis panel; 5. Tube to be tested. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0037] The present invention provides an intelligent detection device for measuring pipe diameter and wall thickness by laser. Figure 1 , including probe 1, probe 2 2 and probe 3 3. Probe 1 2 is installed on the upper side of the chassis panel 4, and is used to measure the first distance between it and the upper end of the pipe diameter. Probe 2 2 is installed on the lower side of the chassis panel 4, and is used to measure the second distance between it and the lower end of the pipe diameter. Probe 3 3 is installed on the rear side of the chassis panel 4, and is used to measure the third distance between it and the inner side of the pipe diameter. During measurement, the pipe 5 to be measured is arranged through the chassis panel 4.

[0038] The present invention uses the control unit to calculate the pipe diameter and wall thickness using relevant parameters, thereby being able to more accurately measure the pipe diameter and wall thickness of the pipe to be measured, which is more efficient and accurate than manual measurement.

[0039] Specifically, the probe 3 is set at an angle φ to the vertical pipe diameter direction;

[0040] Specifically, probe one 1, probe two 2 and probe three 3 are all laser probes.

[0041] The present invention also provides a method for measuring the pipe diameter and wall thickness by laser. Figure 2-4 , using the measuring device as described above, specifically including the following steps,

[0042] S1-calibration stage: introduce the calibration object, and obtain the distance parameters between probe 1 and probe 2 and the relative height difference parameters between probe 1 and probe 3 in turn;

[0043] Specifically, the distance parameters between probe 1 and probe 2 include the sum of the first distance x between probe 1 and the calibration object, the second distance z between probe 2 and the calibration object, and the thickness of the calibration object. This part of the data can be directly obtained.

[0044] For details, please refer to Figure 5 The specific steps for calculating the relative height difference parameters between the probe 1 and the probe 3 are as follows:

[0045] S11: firstly obtain the third distance y between the probe 3 and the inner side of the pipe diameter through the probe 3, and combine the known angle φ between the probe 3 and the vertical calibration object to know the fourth distance y'=y*cosφ between the probe 3 and the calibration object;

[0046] S12: Obtain the relative height difference p between the positions of probe 1 and probe 3, where the relative height difference p is the absolute value of x-y'.

[0047] S2-measurement stage: placing a new tube 5 to be measured, re-measuring the new distance parameter between the probe and the tube 5 to be measured, and measuring the tube diameter and wall thickness of the tube 5 to be measured according to the new distance.

[0048] For details, please refer to Figure 6 S21: measuring a first distance x between the probe 1 and the tube to be measured, a second distance z between the probe 2 and the tube to be measured, and a third distance y between the probe 3 and the inner side of the tube to be measured;

[0049] S22: deriving a new third distance y" between the probe 3 and the tube to be measured from the newly measured data y according to y"=y*cosφ;

[0050] S23: By knowing the fifth distance d between the probe 1 and the probe 2 2, the pipe diameter to be measured = the fifth distance d-the first distance x-the second distance z, the wall thickness = the fifth distance d-the fourth distance y"-the second distance z-the relative height difference p = the fifth distance d-the fourth distance y*cosφ-the second distance z-the relative height difference p.

[0051] See also Figure 7 ,The specific detection algorithm in this application is as follows: after the program is initialized, calibration is performed first, first reading the initial distance between laser sensor probes 1 and 2, calculating the fifth distance d, reading the value of laser sensor probe 3 and calculating the distance y' to the calibration object and the relative height difference p between laser sensor probes 1 and 3;

[0052] During the measurement phase, the data of the three new laser sensor probes are read, the distance y' between the new laser sensor probe 3 and the pipe to be measured is calculated, the pipe diameter and the wall thickness are calculated, and finally the measured values ​​of the wall thickness and pipe diameter are displayed.

[0053] This application gives an actual measurement process and data display. There is a standard pipe diameter of 900mm and a wall thickness of 50mm. Calibration is performed first, and an iron plate with a thickness of 100mm is placed. Laser sensor probe 1 shows that x is 1000mm, and laser sensor probe 2 shows that z is 1000mm. Therefore, the distance between laser sensor probes 1 and 2 is d=x+z+thickness of the calibration object, so d is 2100mm. Laser sensor probe 3 shows that y is 2100mm, and the inclination angle is 60 degrees, so y' is 1050mm, and the height difference p between laser sensor probes 1 and 3 is 50mm.

[0054] After formally measuring the pipe diameter, the pipe to be measured is placed. After running the equipment program, laser sensor probe 1 shows that x is 1000mm, laser sensor probe 2 shows that z is 1000mm, and laser sensor probe 3 shows that y is 2000mm. The inclination angle is 60 degrees, and y" is 1000mm. Therefore, the pipe diameter is dxz=900mm and the wall thickness is dy"-zp=50mm.

[0055] See also Figure 8 Since this application is an automated measurement throughout the process, the electrical schematics involved include a switching power supply, a programmable logic controller PLC, a router, a communication module, a 3-way controller, and 3 laser sensor probes.

[0056] After power is turned on, the PLC (Programmable Logic Controller) starts initializing. When the status indicator (red, yellow, green) at the arrow position starts flashing, it means that initialization is in progress. When the green light is always on, it means that initialization is complete. The two yellow lights in the white frame on the communication module start flashing, and the system startup is complete. The PLC is connected to the master control computer via a network cable, and the software connection method is S7 connection.

[0057] The master control computer can read PLC data and set parameters through the 0~27 addresses of the DB1 data block, a total of 28 bytes. The specific meanings are as follows:

[0058] Address 0 and address 1 form ui nt16, and the read value is divided by 10 to represent the pipe diameter in mm.

[0059] Address 2 and address 3 form ui nt16. The read value is divided by 10 to indicate the wall thickness in mm.

[0060] Addresses 20 and 21 form ui nt16, which defaults to 0. When shutdown is required, set the value to 1.

[0061] Addresses 22 and 23 form ui nt16, which defaults to 0. When the device is stopped, it is set to 1, and the device starts measuring after a delay of 5 seconds.

[0062] Address 24 and 25 form ui nt16, which is 0 by default. After the measurement is completed, it is set to 1 and the pipe diameter and wall thickness data are recorded.

[0063] Address 26, 27 form ui nt16, the default value is 0, and it is set to 1 after the data is taken and turned on. After the value is 1, the communication data is cleared.

[0064] The workflow is:

[0065] (1) Feeding and conveying of the pipeline to be tested: When the device detects the pipeline, the addresses 20 and 21 of the DB1 data block are set to 1.

[0066] (2) The master control computer stops transmission: After the master control computer detects that addresses 20 and 21 are 1, it stops the transmission mechanism and sets addresses 22 and 23 to 1.

[0067] (3) The device starts measuring: After the device detects that addresses 22 and 23 are 1, it sets addresses 20, 21, 22, and 23 to 0 and starts measuring after a delay of 5 seconds.

[0068] (4) Measurement data recording: After the measurement is completed, address 0, 1 records the pipe diameter, address 2, 3 records the wall thickness, and address 24, 25 is set to 1.

[0069] (5) The master control computer reads data: After the master control computer detects that addresses 24 and 25 are 1, it reads the pipe diameter and wall thickness data.

[0070] (6) Data reading is completed: After the master control computer obtains the data and starts the transmission mechanism, it sets addresses 26 and 27 to 1 to notify the PLC that data reading is completed.

[0071] (7) One round of detection is completed: After the PLC detects that addresses 26 and 27 are 1, it sets addresses 24, 25, 26, and 27 to 0, and one round of detection is completed.

[0072] (8) Repeat process: The device will repeat steps 1 to 7.

[0073] The present invention also discloses a computer device, comprising a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor executes the steps of the above method.

[0074] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions can be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server, data center, etc. that contains one or more available media integrated. The available medium can be a magnetic medium, (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid-state drive So lid State Dis sk (SSD)), etc.

[0075] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0076] Each embodiment in this specification is described in a related manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts of the specification can be referred to the partial description of the method embodiment.

[0077] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An intelligent detection device for laser measurement of pipe diameter and wall thickness, comprising a chassis panel (4), characterized in that: Also includes, Probe 1 (1), disposed on the upper side of the chassis panel (4), and used to measure a first distance between the probe and the upper end of the pipe diameter; Probe 2 (2), disposed on the lower side of the chassis panel (4), for measuring a second distance between the probe and the lower end of the pipe diameter; and Probe three (3) is arranged on the rear side of the chassis panel (4) and is used to measure the third distance between it and the inner side of the pipe diameter.

2. The intelligent detection device for laser measurement of pipe diameter and wall thickness according to claim 1, characterized in that: The probe three (3) is arranged at an angle φ with respect to the direction perpendicular to the pipe diameter.

3. The intelligent detection device for laser measurement of pipe diameter and wall thickness according to claim 1, characterized in that: The probe one (1), the probe two (2) and the probe three (3) are all laser probes.

4. A method for measuring pipe diameter and wall thickness by laser, characterized in that: The intelligent detection device for measuring pipe diameter and wall thickness by laser as claimed in any one of claims 1 to 3 specifically comprises the following steps: Calibration stage: introducing the calibration object, and obtaining the distance parameters between probe 1 (1) and probe 2 (2) and the relative height difference parameters between probe 1 (1) and probe 3 (3) in turn; Measuring stage: placing a new pipe to be measured (5), re-measuring the new distance parameter between the probe and the pipe to be measured (5), and measuring the pipe diameter and wall thickness of the pipe to be measured (5) according to the new distance.

5. The method for measuring pipe diameter and wall thickness by laser according to claim 4, characterized in that: The distance parameter between the probe 1 (1) and the probe 2 (2) is the sum of a first distance x between the probe 1 (1) and the calibration object, a second distance z between the probe 2 (2) and the calibration object, and a thickness of the calibration object.

6. The method for measuring pipe diameter and wall thickness by laser according to claim 4, characterized in that: The step of obtaining the relative height difference parameter between the positions of the probe 1 (1) and the probe 3 (3) comprises: The probe three (3) obtains the third distance y between it and the inner side of the pipe diameter, and combined with the known angle φ between the probe three (3) and the vertical calibration object, it can be known that the fourth distance y'=y*cosφ between the probe three (3) and the calibration object; The relative height difference p between the positions of probe 1 (1) and probe 3 (3) is obtained, wherein the relative height difference p is the absolute value of x-y'.

7. The method for measuring pipe diameter and wall thickness by laser according to claim 4, characterized in that: The step of measuring the diameter and wall thickness of the tube (5) to be tested comprises: Measure a first distance x between the probe 1 (1) and the tube to be tested, a second distance z between the probe 2 (2) and the tube to be tested, and a third distance y between the probe 3 (3) and the inner side of the tube to be tested; From the newly measured data y, a new third distance y" between the probe 3 (3) and the tube to be measured (5) is obtained according to y"=y*cosφ; By knowing the fifth distance d between the probe one (1) and the probe two (2), the diameter of the pipe to be measured = the fifth distance d-the first distance x-the second distance z, the wall thickness = the fifth distance d-the fourth distance y"-the second distance z-the relative height difference p = the fifth distance d-the fourth distance y*cosφ-the second distance z-the relative height difference p.

8. An electronic device, characterized in that: The device comprises: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program is configured to implement the steps of the method for laser measurement of pipe diameter and wall thickness according to any one of claims 4 to 7.

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