CN117606378A - Quantity value tracing method, system and device for pavement structure depth measurement - Google Patents

Quantity value tracing method, system and device for pavement structure depth measurement Download PDF

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Publication number
CN117606378A
CN117606378A CN202311415953.XA CN202311415953A CN117606378A CN 117606378 A CN117606378 A CN 117606378A CN 202311415953 A CN202311415953 A CN 202311415953A CN 117606378 A CN117606378 A CN 117606378A
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China
Prior art keywords
measuring
construction depth
depth
standard
pavement
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CN202311415953.XA
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Chinese (zh)
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魏亚
褚楚
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Tsinghua University
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Tsinghua University
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Priority to CN202311415953.XA priority Critical patent/CN117606378A/en
Publication of CN117606378A publication Critical patent/CN117606378A/en
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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
    • E01C23/01—Devices or auxiliary means for setting-out or checking the configuration of new surfacing, e.g. templates, screed or reference line supports; Applications of apparatus for measuring, indicating, or recording the surface configuration of existing surfacing, e.g. profilographs
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/22—Measuring arrangements characterised by the use of optical techniques for measuring depth
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

The application relates to a magnitude traceability method, system and device for pavement construction depth measurement. The method comprises the following steps: calibrating a road surface scanning device through a standard measuring instrument, wherein the dimension between two parallel measuring surfaces of the standard measuring instrument is calibrated through a measuring standard; calibrating a construction depth standard component through a calibrated pavement scanning device to obtain calibration size information of the construction depth standard component, wherein a depth measuring surface of the construction depth standard component comprises a groove; and calibrating the pavement construction depth measuring instrument through the construction depth standard piece based on the calibration size information of the construction depth standard piece to obtain a calibrated pavement construction depth measuring instrument, wherein the calibrated pavement construction depth measuring instrument is used for measuring pavement construction depth. The method can improve the credibility of the measured pavement structure depth.

Description

Quantity value tracing method, system and device for pavement structure depth measurement
Technical Field
The application relates to the technical field of measurement, in particular to a magnitude traceability method, a system and a device for pavement structure depth measurement.
Background
The road surface anti-skid performance is one of important evaluation indexes of road surface safety, and the road surface construction depth is an important index for measuring the road surface anti-skid performance, so that accurate measurement of the road surface construction depth is necessary.
In the related art, various road surface construction depth measuring instruments are used for measuring the construction depth of the road surface, however, due to the lack of a magnitude traceability system for measuring the road surface construction depth, the measurement standards of different road surface construction depth measuring instruments can be different, and the measurement results of different road surface construction depth measuring instruments can be different, so that the reliability of the measured road surface construction depth is low.
Disclosure of Invention
Accordingly, it is desirable to provide a method, a system and a device for tracing the magnitude of the pavement structure depth measurement, which can improve the reliability of the measured pavement structure depth.
In a first aspect, a method for magnitude traceability of pavement construction depth metering is provided, the method comprising:
calibrating a road surface scanning device through a standard measuring instrument, wherein the dimension between two parallel measuring surfaces of the standard measuring instrument is calibrated through a measuring standard;
calibrating a construction depth standard component through a calibrated pavement scanning device to obtain calibration size information of the construction depth standard component, wherein a depth measuring surface of the construction depth standard component comprises a groove;
And calibrating the pavement construction depth measuring instrument through the construction depth standard piece based on the calibration size information of the construction depth standard piece to obtain a calibrated pavement construction depth measuring instrument, wherein the calibrated pavement construction depth measuring instrument is used for measuring pavement construction depth.
In one embodiment, the calibrating the road surface scanning device by the standard measuring device comprises:
projecting laser interference fringes to a measuring surface of a standard measuring instrument through a pavement scanning device, and collecting a measuring interference fringe image of the measuring surface;
acquiring a reference interference fringe image corresponding to a reference plane, and determining first elevation values of a plurality of first measuring points on the measuring surface according to the measuring interference fringe image and the reference interference fringe image;
and determining a measured value corresponding to the road surface scanning device according to each first elevation value, calculating the uncertainty of the measured value corresponding to the road surface scanning device according to each first elevation value, and completing the calibration of the road surface scanning device based on the measured value corresponding to the road surface scanning device and the uncertainty.
In one embodiment, the calibrating the construction depth standard by the calibrated pavement scanner includes:
Projecting laser interference fringes to a depth measuring surface for constructing a depth standard component through a calibrated pavement scanning device, collecting interference fringe images of the depth measuring surface, and obtaining second elevation values of a plurality of second measuring points on the depth measuring surface according to the interference fringe images of the depth measuring surface and reference interference fringe images corresponding to a reference plane;
and determining the calibration size information of the construction depth standard component according to each second elevation value, calculating the uncertainty of the calibration size information according to each second elevation value, and completing the calibration of the construction depth standard component based on the calibration size information and the uncertainty of the calibration size information.
In one embodiment, the calibrating the pavement construction depth measuring instrument by the construction depth standard based on the calibration size information of the construction depth standard includes:
measuring the size of a depth measuring surface of the construction depth standard part by a pavement construction depth measuring instrument to obtain a plurality of size measuring information;
and determining a dimension measurement value corresponding to each dimension measurement information based on the calibration dimension information of the construction depth standard component, calculating the uncertainty of the dimension measurement value according to each dimension measurement value, and completing the calibration of the pavement construction depth measurement instrument based on the dimension measurement value and the uncertainty of the dimension measurement value.
In one embodiment, the measuring interference fringe image includes a plurality of measuring interference fringe images obtained by projecting laser interference fringes onto a measuring surface of a standard measuring instrument through a road surface scanning device, and the calculating the uncertainty of the measured value corresponding to the road surface scanning device according to each first elevation value includes:
for each first measuring point on the measuring surface, calculating an average value corresponding to the first measuring point according to a first elevation value corresponding to the first measuring point in the measured interference fringe image obtained by multiple measurements;
and calculating the uncertainty of the measured value corresponding to the pavement scanning device according to the average value corresponding to each first measuring point, the first elevation value corresponding to the first measuring point in each measuring interference fringe image, the number of the first measuring points and the number of the measuring interference fringe images.
In a second aspect, a magnitude traceability system for road construction depth metering is provided, the magnitude traceability system comprises a calibration device, a standard metering device, a road scanning device, a construction depth standard and a road construction depth measuring instrument, the dimension between two mutually parallel measuring surfaces of the standard metering device is calibrated through a metering reference, and the depth measuring surface of the construction depth standard comprises a groove; wherein:
The standard measuring device is used for calibrating the pavement scanning device;
the calibrated pavement scanning device is used for calibrating the construction depth standard component to obtain calibration size information of the construction depth standard component;
the calibration equipment is used for calibrating the pavement construction depth measuring instrument through the construction depth standard piece based on the calibration size information of the construction depth standard piece to obtain a calibrated pavement construction depth measuring instrument;
the calibrated pavement structure depth measuring instrument is used for measuring pavement structure depth.
In a third aspect, there is provided a magnitude traceability device for pavement construction depth metering, the device comprising:
the first calibration module is used for calibrating the pavement scanning device through a standard measuring instrument, and the dimension between two parallel measuring surfaces of the standard measuring instrument is calibrated through a measuring reference;
the second calibration module is used for calibrating the construction depth standard component through the calibrated pavement scanning device to obtain the calibration size information of the construction depth standard component, and the depth measurement surface of the construction depth standard component comprises a groove;
And the third calibration module is used for calibrating the pavement construction depth measuring instrument through the construction depth standard piece based on the calibration size information of the construction depth standard piece to obtain a calibrated pavement construction depth measuring instrument, and the calibrated pavement construction depth measuring instrument is used for measuring pavement construction depth.
In one embodiment, the first calibration module is specifically configured to:
projecting laser interference fringes to a measuring surface of a standard measuring instrument through a pavement scanning device, and collecting a measuring interference fringe image of the measuring surface;
acquiring a reference interference fringe image corresponding to a reference plane, and determining first elevation values of a plurality of first measuring points on the measuring surface according to the measuring interference fringe image and the reference interference fringe image;
and determining a measured value corresponding to the road surface scanning device according to each first elevation value, calculating the uncertainty of the measured value corresponding to the road surface scanning device according to each first elevation value, and completing the calibration of the road surface scanning device based on the measured value corresponding to the road surface scanning device and the uncertainty.
In one embodiment, the second calibration module is specifically configured to:
Projecting laser interference fringes to a depth measuring surface for constructing a depth standard component through a calibrated pavement scanning device, collecting interference fringe images of the depth measuring surface, and obtaining second elevation values of a plurality of second measuring points on the depth measuring surface according to the interference fringe images of the depth measuring surface and reference interference fringe images corresponding to a reference plane;
and determining the calibration size information of the construction depth standard component according to each second elevation value, calculating the uncertainty of the calibration size information according to each second elevation value, and completing the calibration of the construction depth standard component based on the calibration size information and the uncertainty of the calibration size information.
In one embodiment, the third calibration module is specifically configured to:
measuring the size of a depth measuring surface of the construction depth standard part by a pavement construction depth measuring instrument to obtain a plurality of size measuring information;
and determining a dimension measurement value corresponding to each dimension measurement information based on the calibration dimension information of the construction depth standard component, calculating the uncertainty of the dimension measurement value according to each dimension measurement value, and completing the calibration of the pavement construction depth measurement instrument based on the dimension measurement value and the uncertainty of the dimension measurement value.
In one embodiment, the measurement interference fringe image includes a plurality of measurement interference fringe images obtained by projecting laser interference fringes onto a measurement surface of a standard measuring instrument through a road surface scanning device for a plurality of times, and the first calibration module is specifically configured to:
for each first measuring point on the measuring surface, calculating an average value corresponding to the first measuring point according to a first elevation value corresponding to the first measuring point in the measured interference fringe image obtained by multiple measurements;
and calculating the uncertainty of the measured value corresponding to the pavement scanning device according to the average value corresponding to each first measuring point, the first elevation value corresponding to the first measuring point in each measuring interference fringe image, the number of the first measuring points and the number of the measuring interference fringe images.
In a fourth aspect, the present application also provides a computer device. The computer device comprises a memory storing a computer program and a processor implementing the steps of the method of the first aspect when the processor executes the computer program.
In a fifth aspect, the present application also provides a computer-readable storage medium. The computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method of the first aspect.
In a sixth aspect, the present application also provides a computer program product. The computer program product comprising a computer program which, when executed by a processor, implements the steps of the method of the first aspect.
According to the magnitude traceability method, the device, the computer equipment, the storage medium and the computer program product for measuring the road surface construction depth, the road surface scanning device is calibrated through the standard measuring instrument calibrated based on the measurement standard, the calibrated road surface scanning device is used for calibrating the construction depth standard component, the calibrated construction depth standard component is used for calibrating the road surface construction depth measuring instrument, the measurement result of the calibrated road surface construction depth measuring instrument has traceability, the measurement result accuracy is high, after different road surface construction depth measuring instruments are calibrated by adopting the method, the measurement result repeatability is high, the standardization of the road surface construction depth measurement is realized by the method, the basis is provided for the research of the road surface anti-skid performance, and the magnitude traceability system is simple to realize and low in cost.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the related art, the drawings that are required to be used in the embodiments or the related technical descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for a person having ordinary skill in the art.
FIG. 1 is an application environment diagram of a magnitude traceability method of road construction depth metering in one embodiment;
FIG. 2 is a flow diagram of a method for magnitude tracing of pavement construction depth metering in one embodiment;
FIG. 3 is a schematic diagram of a road surface scanning device based on laser interference fringes as it scans a standard metrology tool in one embodiment;
FIG. 4 is a schematic diagram of a build depth gauge in one embodiment;
FIG. 5 is a schematic flow chart of calibrating a road surface scanning device with a standard metrology tool in one embodiment;
FIG. 6 is a schematic flow chart of calibrating a depth of construction standard by a calibrated road surface scanning device in one embodiment;
FIG. 7 is a flow diagram of a calculation process of uncertainty in one embodiment;
FIG. 8 is a block diagram of a magnitude traceability device of pavement construction depth metering in one embodiment;
fig. 9 is an internal structural diagram of a computer device in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
First, before the technical solution of the embodiments of the present application is specifically described, a description is first given of a technical background or a technical evolution context on which the embodiments of the present application are based.
In recent years, with the increasing demands of people on the comfort level of driving, the research of the road surface anti-skid performance becomes the research direction of quite hot, and the road surface construction depth is an important index for measuring the road surface anti-skid performance, and the measurement of the road surface construction depth can be standardized by a magnitude traceability system aiming at the measurement of the road surface construction depth.
In the metering field, various measuring instruments need to be subjected to magnitude tracing to realize standardization of measurement, such as magnitude tracing of angle and displacement indication values by a laser centering instrument, magnitude tracing of a mechanical sensor, magnitude tracing of a short-circuit impedance tester and the like. In road engineering, researchers have begun to perform magnitude tracing on road surface detection instruments, such as measuring road surface flatness using line structured light. The three-dimensional metering device based on the linear structured light projects line laser onto the surface of a measured object along a known direction, the line laser deforms due to the fluctuation of the surface of the measured object, phase information is extracted from the deformed line laser to calculate the elevation value of the point cloud on the surface of the measured object, and the metering method has the characteristics of strong instantaneity and high precision, but the metering method has the characteristics of difficulty in obtaining high resolution, namely, the minimum range which can be identified by an instrument is large, the scanning efficiency is low, the data is often lacked, a more efficient metering device can be used for carrying out magnitude tracing, and the magnitude tracing of pavement structure depth metering still lacks related research.
Based on the background, the applicant provides a magnitude traceability method for road surface construction depth measurement through long-term research and development and experimental verification, in the method, a standard measuring instrument calibrated based on a measurement standard is used for calibrating a road surface scanning device, a calibrated road surface scanning device is used for calibrating a construction depth standard part, then the calibrated construction depth standard part is used for calibrating a road surface construction depth measuring instrument, the measurement result of the calibrated road surface construction depth measuring instrument has traceability, the measurement result accuracy is high, after different road surface construction depth measuring instruments are calibrated by adopting the method, the measurement result repeatability is high, the standardization of road surface construction depth measurement is realized by the method, the basis is provided for the research of the road surface anti-slip performance, and the magnitude traceability system is simple to realize and low in cost. In addition, the applicant has made a great deal of creative effort to find out the technical problems of the present application and to introduce the technical solutions of the following embodiments.
The magnitude traceability method for pavement structure depth measurement provided by the embodiment of the application can be applied to an application environment shown in fig. 1. The application environment comprises a standard measuring device 1, a road surface scanning device 2, a construction depth standard 3, a road surface construction depth measuring instrument 4 and a calibration device 5. The road surface scanning device has a scanning component 6, which can be a road surface scanning device based on laser interference fringes for emitting laser interference fringes 7. The calibration device may be a terminal, and it is understood that the calibration device may also be a server, and may also be a system including a terminal and a server, and implemented through interaction between the terminal and the server. The calibration device can be in wired communication or wireless communication, and is respectively communicated with the standard measuring device, the road surface scanning device, the construction depth standard component and the road surface construction depth measuring instrument, so that the calibration processing of the device is completed, for example, the calibration device can acquire related images or data generated in the calibration process and process the data, and the calibration process is completed. The embodiment of the application does not limit a specific communication mode.
In one embodiment, as shown in fig. 2, a method for tracing the magnitude of pavement construction depth measurement is provided, and the method is applied to the calibration equipment in fig. 1 for illustration, and comprises the following steps:
and 202, calibrating the pavement scanning device through a standard metering device.
In this embodiment, the standard measuring device may be a rectangular parallelepiped standard member conforming to a preset measuring standard. In one embodiment, the standard measuring device has two measuring surfaces that are parallel to one another, and the dimension between the two measuring surfaces of the standard measuring device that are parallel to one another is calibrated by a measuring standard, the dimension error of the standard measuring device being ±0.001mm.
The road surface scanning device is provided with a scanning component, the standard measuring instrument is arranged right below the scanning component, the standard measuring instrument is provided with one measuring surface of two parallel measuring surfaces, and the two measuring surfaces are opposite to the scanning end of the scanning component, as shown in fig. 3, and the road surface scanning device based on the laser interference fringes is a schematic diagram when scanning the standard measuring instrument. When calibration is required, the calibration device can send a calibration instruction to a road surface scanning device based on laser interference fringes, and the road surface scanning device responds to the calibration instruction and projects the laser interference fringes onto a measuring surface of a standard measuring instrument through a scanning component, so that a measuring interference fringe image is displayed on the measuring surface of the standard measuring instrument, and the measuring interference fringe image contains three-dimensional information of the measuring surface.
The calibration device may comprise a camera and a processor. The calibration equipment can acquire a measurement interference fringe image of the measurement surface through a camera, then extracts phase information of laser from the measurement interference fringe image through a preset phase extraction algorithm, and further calculates three-dimensional contour data of the measurement surface of the standard measuring instrument according to the phase information of the laser. And the calibration equipment calculates the uncertainty of the measured value corresponding to the road surface scanning device according to the elevation value (namely the first elevation value) of the three-dimensional profile data, namely, the calibration of the standard metering device to the road surface scanning device is completed. Alternatively, the calibration device may store the uncertainty locally or in a cloud database.
And 204, calibrating the construction depth standard component through the calibrated pavement scanning device to obtain the calibrated size information of the construction depth standard component, wherein the depth measuring surface of the construction depth standard component comprises a groove.
In the embodiment of the application, the constructional depth standard part may be a cuboid structure with grooves on the surface (namely, the depth measuring surface). In one example, the build depth standard may be a structure with a side length of 200-300mm, a thickness of 8-10mm, a groove spacing of 40-50mm, and a groove depth of 2-5 mm. Referring to fig. 4, a schematic diagram of a depth of construction standard is provided according to an embodiment of the present application.
As described above, the road surface scanning device has the scanning member under which the depth gauge is placed, and the depth measuring surface of the depth gauge faces the scanning end of the scanning member, and the structure of the road surface scanning device is similar to that of fig. 3. When the calibration is required, the calibration device can send a calibration instruction to the calibrated pavement scanning device, and the calibrated pavement scanning device responds to the calibration instruction and projects laser interference fringes onto the depth measuring surface of the construction depth standard component through the scanning component, so that an interference fringe image is displayed on the depth measuring surface of the construction depth standard component, and the interference fringe image contains three-dimensional information of the depth measuring surface.
The calibration device may comprise a camera and a processor. The calibration equipment can acquire interference fringe images of the depth measurement surface through a camera, then extracts phase information of laser from the interference fringe images through a preset phase extraction algorithm, and further calculates three-dimensional contour data of the depth measurement surface of the depth standard component according to the phase information of the laser. And the calibration equipment calculates the uncertainty of the calibration size information of the construction depth standard component according to the elevation value (namely the second elevation value) of the three-dimensional profile data, and the calibration of the construction depth standard component is completed. Alternatively, the calibration device may store the uncertainty locally or in a cloud database.
And 206, calibrating the pavement construction depth measuring instrument through the construction depth standard piece based on the calibration size information of the construction depth standard piece to obtain a calibrated pavement construction depth measuring instrument, wherein the calibrated pavement construction depth measuring instrument is used for measuring pavement construction depth.
In this embodiment of the present application, after calibration of the constructional depth standard part is completed, the calibration device may send a scanning instruction to the road surface constructional depth measuring instrument, and the road surface constructional depth measuring instrument may scan the depth measuring surface of the calibrated constructional depth standard part in response to the scanning instruction, to obtain three-dimensional profile data of the depth measuring surface of the constructional depth standard part, and then, the calibration device calculates uncertainty of the measurement constructional depth standard part according to elevation values of the three-dimensional profile data, thereby completing calibration of the general road surface constructional depth measuring instrument by the constructional depth standard part, where the calibrated road surface constructional depth measuring instrument is used for measuring road surface constructional depth. Alternatively, the calibration device may store the uncertainty locally or in a cloud database.
Through the processing procedure, the calibration equipment calibrates the pavement scanning device through the standard metering device calibrated based on the metering standard, the calibrated pavement scanning device is used for calibrating the construction depth standard component, the calibrated construction depth standard component is used for calibrating the pavement construction depth measuring instrument, the measurement results of the calibrated pavement construction depth measuring instrument are traceable, the measurement result accuracy is high, and after the different pavement construction depth measuring instruments are calibrated by adopting the method, the measurement result repeatability is high, the standardization of pavement construction depth measurement is realized by the method, the basis is provided for the research of the pavement skid resistance, and the value traceability system is simple to realize and low in cost.
As shown in fig. 5, the calibration of the road surface scanning device by the standard measuring device specifically includes:
step 502, laser interference fringes are projected to a measuring surface of a standard measuring instrument through a pavement scanning device, and a measuring interference fringe image of the measuring surface is acquired.
In this embodiment of the present application, when calibration is required, the calibration device may send a calibration instruction to a road surface scanning device based on laser interference fringes, where the road surface scanning device projects the laser interference fringes onto a measurement surface of a standard measurement apparatus through a scanning component in response to the calibration instruction, so that a measurement interference fringe image is displayed on the measurement surface of the standard measurement apparatus, where the measurement interference fringe image includes three-dimensional information of the measurement surface.
Step 504, a reference interference fringe image corresponding to the reference plane is obtained, and a first elevation value of a plurality of first measurement points on the measurement surface is determined according to the measurement interference fringe image and the reference interference fringe image.
In the embodiment of the application, the calibration device can acquire the measurement interference fringe image of the measurement surface through the camera. The measurement interference fringe image may be a gray scale image, and gray scale values of respective pixel points in the gray scale image may constitute a gray scale value matrix. The calibration device can perform Fourier transform on the gray value matrix to obtain a frequency domain image corresponding to the measured interference fringe image, and further extract fringe fundamental frequency component Q (f-f 0 Y). Wherein f 0 Is the spatial frequency of the interference fringe in the frequency domain image, and y is the ordinate of the interference fringe in the frequency domain image. f is the frequency corresponding to each pixel point in the frequency domain image, and f corresponding to different pixel points is different. Then, calibrating the device to the fringe fundamental frequency componentQ(f-f 0 And y) performing inverse Fourier transform processing to obtain phase information.
The calibration device may determine a plurality of measurement points (i.e. first measurement points) on the measurement surface by means of a preset sampling. In this way, the calibration device can calculate the three-dimensional information corresponding to each first measurement point by adopting the interference fringe three-dimensional reconstruction principle according to the phase information corresponding to each first measurement point, and then uses the three-dimensional information corresponding to each first measurement point as the three-dimensional contour data of the measurement surface of the standard measuring instrument.
The calibration device can also acquire a reference interference fringe image corresponding to the reference plane, determine reference three-dimensional contour data of a measurement surface of the standard measuring instrument based on the reference interference fringe image, and further calculate a first elevation value of each first measurement point according to the reference three-dimensional contour data and the measured three-dimensional contour data. And then, the calibration equipment calculates the uncertainty of the measured value corresponding to the road surface scanning device according to the first elevation value of each first measuring point, so that the calibration of the standard metering device on the road surface scanning device is completed. The method for obtaining the reference three-dimensional contour data is similar to the above process for measuring the three-dimensional contour data, and the embodiments of the present application will not be repeated.
Step 506, determining the measured value corresponding to the road surface scanning device according to each first elevation value, calculating the uncertainty of the measured value corresponding to the road surface scanning device according to each first elevation value, and completing the calibration of the road surface scanning device based on the measured value and the uncertainty corresponding to the road surface scanning device.
In this embodiment of the present application, the calibration device may determine, according to each first elevation value, a measurement value corresponding to the road surface scanning device, and further calculate, according to a preset uncertainty calculation policy and each first elevation value, an uncertainty of the measurement value corresponding to the road surface scanning device, and store the measurement value and the uncertainty corresponding to the road surface scanning device, so as to complete calibration of the road surface scanning device. Wherein, the uncertainty of the measured value corresponding to the road surface scanning device is used for reflecting the repeatability of the measured value measured by the road surface scanning device.
Based on the processing procedure, the calibration of the road surface scanning device can be completed, so that the road surface scanning device has traceability and high accuracy of the measuring result.
Optionally, referring to fig. 6, calibrating the constructional depth standard part by the calibrated pavement scanning apparatus includes:
step 602, projecting laser interference fringes to a depth measuring surface for constructing a depth standard component through the calibrated pavement scanning device, collecting interference fringe images of the depth measuring surface, and obtaining second elevation values of a plurality of second measuring points on the depth measuring surface according to the interference fringe images of the depth measuring surface and reference interference fringe images corresponding to the reference plane.
In this embodiment of the present application, when calibration is required, the calibration device may send a calibration instruction to the calibrated pavement scanning device, where the calibrated pavement scanning device responds to the calibration instruction, and projects, through the scanning component, a laser interference fringe onto the depth measurement surface of the depth standard component, so that an interference fringe image is displayed on the depth measurement surface of the depth standard component, where the interference fringe image includes three-dimensional information of the depth measurement surface.
The calibration device can acquire interference fringe images of the depth measurement surface through a camera. The interference fringe image may be a gray scale image, and gray scale values of respective pixel points in the gray scale image may constitute a gray scale value matrix. The calibration device can perform Fourier transform on the gray value matrix to obtain a frequency domain image corresponding to the interference fringe image, and further extract fringe fundamental frequency component Q (f-f) 0 Y). Wherein f 0 Is the spatial frequency of the interference fringe in the frequency domain image, and y is the ordinate of the interference fringe in the frequency domain image. f is the frequency corresponding to each pixel point in the frequency domain image, and f corresponding to different pixel points is different. The calibration device then calibrates the fringe fundamental frequency component Q (f-f 0 And y) performing inverse Fourier transform processing to obtain phase information.
The calibration device may determine a plurality of measurement points (i.e. second measurement points) on the depth measurement surface by means of a preset sampling. In this way, the calibration device can calculate the three-dimensional information corresponding to each second measurement point by adopting the interference fringe three-dimensional reconstruction principle according to the phase information corresponding to each second measurement point, and further uses the three-dimensional information corresponding to each second measurement point as the three-dimensional contour data of the depth measurement surface of the construction depth standard component.
The calibration device can also acquire a reference interference fringe image corresponding to the reference plane, determine reference three-dimensional contour data of a depth measurement surface of the depth standard component based on the reference interference fringe image, and further calculate a second elevation value of each second measurement point according to the reference three-dimensional contour data and the three-dimensional contour data obtained by measurement.
Step 604, determining calibration size information of the construction depth standard component according to each second elevation value, calculating uncertainty of the calibration size information according to each second elevation value, and completing calibration of the construction depth standard component based on the calibration size information and the uncertainty of the calibration size information.
In this embodiment of the present application, the calibration device may determine calibration size information of the constructional depth standard component according to the second elevation values of the second measurement points, further calculate uncertainty of the calibration size information according to the second elevation values and the uncertainty calculation policy stored in advance, and then store the calibration size information and the uncertainty of the calibration size information, so as to complete calibration of the constructional depth standard component.
Based on the processing process, calibration of the construction depth standard component can be completed, so that the construction depth standard component has traceability and high accuracy of measurement results.
Optionally, calibrating the pavement construction depth measuring instrument by the construction depth standard based on the calibration size information of the construction depth standard includes: measuring the size of a depth measuring surface of a construction depth standard part through a pavement construction depth measuring instrument to obtain a plurality of size measuring information; and determining a dimension measurement value corresponding to each dimension measurement information based on the calibration dimension information of the construction depth standard component, calculating the uncertainty of the dimension measurement value according to each dimension measurement value, and completing the calibration of the pavement construction depth measurement instrument based on the uncertainty of the dimension measurement value and the dimension measurement value.
In this embodiment of the present application, after calibration of the constructional depth standard part is completed, the calibration device may send a scanning instruction to the pavement constructional depth measuring instrument, and the pavement constructional depth measuring instrument may scan the depth measuring surface of the calibrated constructional depth standard part in response to the scanning instruction, so as to measure three-dimensional contour data of the depth measuring surface of the constructional depth standard part, and further determine size measurement information of the depth measuring surface according to the measured three-dimensional contour data. The calibration equipment can scan the construction depth standard part for a plurality of times through the pavement construction depth measuring instrument to obtain a plurality of dimension measuring information. Then, the calibration device may determine the size measurement value corresponding to each size measurement information according to the pre-stored calibration size information of the constructional depth standard member. For example, the size measurement value corresponding to each size measurement information may be determined according to the difference between the calibration size information and each size measurement information. The calibration device can calculate the uncertainty of the dimension measurement value according to each dimension measurement value, and then complete the calibration of the pavement construction depth measurement instrument based on the dimension measurement value and the uncertainty of the dimension measurement value.
Based on the processing process, the calibration of the pavement structure depth measuring instrument can be completed, so that the pavement structure depth measuring instrument has traceability and high accuracy of measuring results.
Optionally, as shown in fig. 7, the embodiment of the present application further provides a calculation process of uncertainty, specifically, taking uncertainty of a measured value corresponding to the road surface scanning device as an example, the specific calculation process includes:
step 702, for each first measurement point on the measurement surface, calculating an average value corresponding to the first measurement point according to a first elevation value corresponding to the first measurement point in the measurement interference fringe image obtained by multiple measurements.
Step 704, calculating uncertainty of the measured value corresponding to the road surface scanning device according to the average value corresponding to each first measuring point, the first elevation value corresponding to the first measuring point in each measuring interference fringe image, the number of the first measuring points and the number of the measuring interference fringe images.
The application is trueIn an embodiment, for each first measurement point on the measurement surface, a preset number of measurements may be performed on the first measurement point, to obtain a preset number of first elevation values corresponding to the first measurement point. For example, the measurement surface may be measured 5 times, and the values corresponding to 600 first measurement points may be extracted from the elevation values obtained by each measurement. Then, an average value may be calculated according to a preset number of first elevation values corresponding to the first measurement point. The calibration device may calculate the uncertainty of the measurement value corresponding to the road surface scanning device according to the average value corresponding to each first measurement point, the first elevation value corresponding to the first measurement point in each measurement interference fringe image, the total number of the first measurement points, and the number of the measurement interference fringe images (i.e. the preset number). The elevation value is recorded as x ij The uncertainty u (x) is given by the elevation value of the j-th first measurement point of the i-th measurement:
wherein,n is the total number of first measurement points and M is the total number of measurements.
It can be understood that other uncertainty in the embodiments of the present application, such as uncertainty of the calibration size information, uncertainty of the size measurement value, etc., may also be calculated through the above calculation process, which is not described in detail in the embodiments of the present application.
Based on the above processing procedure, calculation of uncertainty can be realized to calibrate the road construction depth measuring instrument. The measurement result of the calibrated pavement structure depth measuring instrument has traceability, the measurement result accuracy is high, and after different pavement structure depth measuring instruments are calibrated by adopting the method, the measurement result repeatability is high, the standardization of pavement structure depth measurement is realized by the method, the basis is provided for the research of the pavement anti-skid performance, and the value traceability system is simple to realize and low in cost.
It should be understood that, although the steps in the flowcharts related to the embodiments described above are sequentially shown as indicated by arrows, these steps are not necessarily sequentially performed in the order indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in the flowcharts described in the above embodiments may include a plurality of steps or a plurality of stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of the steps or stages is not necessarily performed sequentially, but may be performed alternately or alternately with at least some of the other steps or stages.
Based on the same inventive concept, the embodiment of the application also provides a magnitude traceability device for the pavement construction depth measurement, which is used for realizing the magnitude traceability method for the pavement construction depth measurement. The implementation scheme of the solution provided by the device is similar to the implementation scheme recorded in the method, so the specific limitation in the embodiments of the magnitude tracing device for the pavement structure depth measurement provided below can be referred to the limitation of the magnitude tracing method for the pavement structure depth measurement hereinabove, and the description is omitted here.
In one embodiment, as shown in fig. 8, there is provided a magnitude traceability device of pavement construction depth measurement, comprising: a first calibration module 810, a second calibration module 820, and a third calibration module 830, wherein:
the first calibration module 810 is used for calibrating the road surface scanning device through a standard measuring instrument, and the dimension between two parallel measuring surfaces of the standard measuring instrument is calibrated through a measuring reference;
the second calibration module 820 is configured to calibrate the constructional depth standard part through the calibrated pavement scanning device, so as to obtain calibration size information of the constructional depth standard part, where a depth measurement surface of the constructional depth standard part includes a groove;
The third calibration module 830 is configured to calibrate the road construction depth measurement instrument through the construction depth standard component based on calibration size information of the construction depth standard component, to obtain a calibrated road construction depth measurement instrument, where the calibrated road construction depth measurement instrument is used for measuring the road construction depth.
In one embodiment, the first calibration module 810 is specifically configured to:
projecting laser interference fringes to a measuring surface of a standard measuring instrument through a pavement scanning device, and collecting a measuring interference fringe image of the measuring surface;
acquiring a reference interference fringe image corresponding to a reference plane, and determining first elevation values of a plurality of first measuring points on a measuring surface according to the measuring interference fringe image and the reference interference fringe image;
and determining the measured value corresponding to the road surface scanning device according to each first elevation value, calculating the uncertainty of the measured value corresponding to the road surface scanning device according to each first elevation value, and completing the calibration of the road surface scanning device based on the measured value and the uncertainty corresponding to the road surface scanning device.
In one embodiment, the second calibration module 820 is specifically configured to:
projecting laser interference fringes to a depth measuring surface for constructing a depth standard component through a calibrated pavement scanning device, collecting interference fringe images of the depth measuring surface, and obtaining second elevation values of a plurality of second measuring points on the depth measuring surface according to the interference fringe images of the depth measuring surface and reference interference fringe images corresponding to a reference plane;
And determining the calibration size information of the construction depth standard component according to each second elevation value, calculating the uncertainty of the calibration size information according to each second elevation value, and completing the calibration of the construction depth standard component based on the calibration size information and the uncertainty of the calibration size information.
In one embodiment, the third calibration module 830 is specifically configured to:
measuring the size of a depth measuring surface of a construction depth standard part through a pavement construction depth measuring instrument to obtain a plurality of size measuring information;
and determining a dimension measurement value corresponding to each dimension measurement information based on the calibration dimension information of the construction depth standard component, calculating the uncertainty of the dimension measurement value according to each dimension measurement value, and completing the calibration of the pavement construction depth measurement instrument based on the uncertainty of the dimension measurement value and the dimension measurement value.
In one embodiment, the measuring interference fringe image includes projecting laser interference fringes onto a measuring surface of a standard measuring instrument through a road surface scanning device multiple times, and the obtained multiple measuring interference fringe images are specifically used by the first calibration module 810:
for each first measuring point on the measuring surface, calculating an average value corresponding to the first measuring point according to a first elevation value corresponding to the first measuring point in the measured interference fringe image obtained by multiple measurements;
And calculating the uncertainty of the measured value corresponding to the pavement scanning device according to the average value corresponding to each first measuring point, the first elevation value corresponding to the first measuring point in each measuring interference fringe image, the number of the first measuring points and the number of the measuring interference fringe images.
The various modules in the magnitude traceability device for road construction depth metering can be fully or partially realized by software, hardware and combinations thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.
In one embodiment, a computer device is provided, which may be a terminal, and the internal structure thereof may be as shown in fig. 9. The computer device includes a processor, a memory, a communication interface, a display screen, and an input device connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The communication interface of the computer device is used for carrying out wired or wireless communication with an external terminal, and the wireless mode can be realized through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. The computer program, when executed by a processor, implements a magnitude traceability method of pavement construction depth metering. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, can also be keys, a track ball or a touch pad arranged on the shell of the computer equipment, and can also be an external keyboard, a touch pad or a mouse and the like.
It will be appreciated by those skilled in the art that the structure shown in fig. 9 is merely a block diagram of a portion of the structure associated with the present application and is not limiting of the computer device to which the present application applies, and that a particular computer device may include more or fewer components than shown, or may combine some of the components, or have a different arrangement of components.
In one embodiment, a computer device is provided, comprising a memory and a processor, the memory having stored therein a computer program, the processor implementing the steps of the method embodiments described above when the computer program is executed.
In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored which, when executed by a processor, implements the steps of the method embodiments described above.
In an embodiment, a computer program product is provided, comprising a computer program which, when executed by a processor, implements the steps of the method embodiments described above.
It should be noted that, user information (including but not limited to user equipment information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, presented data, etc.) referred to in the present application are information and data authorized by the user or sufficiently authorized by each party.
Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, database, or other medium used in the various embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, high density embedded nonvolatile Memory, resistive random access Memory (ReRAM), magnetic random access Memory (Magnetoresistive Random Access Memory, MRAM), ferroelectric Memory (Ferroelectric Random Access Memory, FRAM), phase change Memory (Phase Change Memory, PCM), graphene Memory, and the like. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory, and the like. By way of illustration, and not limitation, RAM can be in the form of a variety of forms, such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), and the like. The databases referred to in the various embodiments provided herein may include at least one of relational databases and non-relational databases. The non-relational database may include, but is not limited to, a blockchain-based distributed database, and the like. The processors referred to in the embodiments provided herein may be general purpose processors, central processing units, graphics processors, digital signal processors, programmable logic units, quantum computing-based data processing logic units, etc., without being limited thereto.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the present application. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application shall be subject to the appended claims.

Claims (10)

1. A method for tracing the magnitude of pavement construction depth metering, the method comprising:
calibrating a road surface scanning device through a standard measuring instrument, wherein the dimension between two parallel measuring surfaces of the standard measuring instrument is calibrated through a measuring standard;
calibrating a construction depth standard component through a calibrated pavement scanning device to obtain calibration size information of the construction depth standard component, wherein a depth measuring surface of the construction depth standard component comprises a groove;
And calibrating the pavement construction depth measuring instrument through the construction depth standard piece based on the calibration size information of the construction depth standard piece to obtain a calibrated pavement construction depth measuring instrument, wherein the calibrated pavement construction depth measuring instrument is used for measuring pavement construction depth.
2. The method of claim 1, wherein calibrating the road scanning device with the standard metrology tool comprises:
projecting laser interference fringes to a measuring surface of a standard measuring instrument through a pavement scanning device, and collecting a measuring interference fringe image of the measuring surface;
acquiring a reference interference fringe image corresponding to a reference plane, and determining first elevation values of a plurality of first measuring points on the measuring surface according to the measuring interference fringe image and the reference interference fringe image;
and determining a measured value corresponding to the road surface scanning device according to each first elevation value, calculating the uncertainty of the measured value corresponding to the road surface scanning device according to each first elevation value, and completing the calibration of the road surface scanning device based on the measured value corresponding to the road surface scanning device and the uncertainty.
3. The method of claim 1, wherein calibrating the formation depth standard with the calibrated pavement scanner comprises:
projecting laser interference fringes to a depth measuring surface for constructing a depth standard component through a calibrated pavement scanning device, collecting interference fringe images of the depth measuring surface, and obtaining second elevation values of a plurality of second measuring points on the depth measuring surface according to the interference fringe images of the depth measuring surface and reference interference fringe images corresponding to a reference plane;
and determining the calibration size information of the construction depth standard component according to each second elevation value, calculating the uncertainty of the calibration size information according to each second elevation value, and completing the calibration of the construction depth standard component based on the calibration size information and the uncertainty of the calibration size information.
4. The method of claim 1, wherein calibrating the pavement construction depth measurement instrument with the construction depth standard based on the calibration dimensional information of the construction depth standard comprises:
measuring the size of a depth measuring surface of the construction depth standard part by a pavement construction depth measuring instrument to obtain a plurality of size measuring information;
And determining a dimension measurement value corresponding to each dimension measurement information based on the calibration dimension information of the construction depth standard component, calculating the uncertainty of the dimension measurement value according to each dimension measurement value, and completing the calibration of the pavement construction depth measurement instrument based on the dimension measurement value and the uncertainty of the dimension measurement value.
5. The method of claim 2, wherein the measuring the interference fringe image includes projecting laser interference fringes onto a measuring surface of a standard metrology tool through a road surface scanning device a plurality of times, and the calculating the uncertainty of the measured value corresponding to the road surface scanning device according to each of the first elevation values includes:
for each first measuring point on the measuring surface, calculating an average value corresponding to the first measuring point according to a first elevation value corresponding to the first measuring point in the measured interference fringe image obtained by multiple measurements;
and calculating the uncertainty of the measured value corresponding to the pavement scanning device according to the average value corresponding to each first measuring point, the first elevation value corresponding to the first measuring point in each measuring interference fringe image, the number of the first measuring points and the number of the measuring interference fringe images.
6. The magnitude traceability system for the road construction depth measurement is characterized by comprising calibration equipment, a standard measurement instrument, a road scanning device, a construction depth standard part and a road construction depth measurement instrument, wherein the dimension between two parallel measurement surfaces of the standard measurement instrument is calibrated through a measurement reference, and the depth measurement surface of the construction depth standard part comprises a groove; wherein:
the standard measuring device is used for calibrating the pavement scanning device;
the calibrated pavement scanning device is used for calibrating the construction depth standard component to obtain calibration size information of the construction depth standard component;
the calibration equipment is used for calibrating the pavement construction depth measuring instrument through the construction depth standard piece based on the calibration size information of the construction depth standard piece to obtain a calibrated pavement construction depth measuring instrument;
the calibrated pavement structure depth measuring instrument is used for measuring pavement structure depth.
7. A magnitude traceability device for pavement construction depth metering, the device comprising:
the first calibration module is used for calibrating the pavement scanning device through a standard measuring instrument, and the dimension between two parallel measuring surfaces of the standard measuring instrument is calibrated through a measuring reference;
The second calibration module is used for calibrating the construction depth standard component through the calibrated pavement scanning device to obtain the calibration size information of the construction depth standard component, and the depth measurement surface of the construction depth standard component comprises a groove;
and the third calibration module is used for calibrating the pavement construction depth measuring instrument through the construction depth standard piece based on the calibration size information of the construction depth standard piece to obtain a calibrated pavement construction depth measuring instrument, and the calibrated pavement construction depth measuring instrument is used for measuring pavement construction depth.
8. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method of any one of claims 1 to 5 when the computer program is executed.
9. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 1 to 5.
10. A computer program product comprising a computer program, characterized in that the computer program, when being executed by a processor, implements the steps of the method according to any one of claims 1 to 5.
CN202311415953.XA 2023-10-27 2023-10-27 Quantity value tracing method, system and device for pavement structure depth measurement Pending CN117606378A (en)

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