CN113639804B - Method and system for detecting quality of cable conduit - Google Patents
Method and system for detecting quality of cable conduit Download PDFInfo
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- CN113639804B CN113639804B CN202111212739.5A CN202111212739A CN113639804B CN 113639804 B CN113639804 B CN 113639804B CN 202111212739 A CN202111212739 A CN 202111212739A CN 113639804 B CN113639804 B CN 113639804B
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- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
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Abstract
The invention provides a cable guide pipe quality detection method and a cable guide pipe quality detection system. The method and the system can directly compare the thickness measurement value/sound velocity measurement value with the standard value in the standard value database established in advance and automatically give the quality detection suggestion, the detection precision of the method can reach 0.1mm, the detection precision is high, the quality detection result can be automatically given, the working intensity of a detection engineer is effectively reduced, and the detection efficiency is improved.
Description
Technical Field
The present invention relates to the field of non-destructive testing, and more particularly, to a method and system for testing the quality of a cable duct.
Background
The cable guide pipe has good safety and reliability, plays a good protection role on the cable, reduces cable faults caused by external force damage, and prolongs the service life of the cable. Due to the many advantages of cable ducts, their use is increasing. In the prior art, the quality rapid detection of the cable duct is mainly wall thickness detection, the evaluation index is single, and the detection method is backward because a vernier caliper is adopted. In addition, the quality detection of the cable guide in the prior art further comprises the measurement of the thickness and the sound velocity of the cable guide by using a handheld ultrasonic thickness gauge. When the sound velocity of the cable guide pipe is calibrated, the wall thickness of the cable guide pipe can be input by the handheld ultrasonic thickness gauge, but the situation that the sound velocity standard value is inaccurate can occur when the cable guide pipe sampled on site is used for directly calibrating, and data corresponding to the material cannot be stored after the sound velocity of the cable guide pipe made of the material is obtained, so that the handheld ultrasonic thickness gauge is used when the wall thickness of the cable guide pipe made of the same material is measured next time; when the handheld ultrasonic thickness gauge is used for measuring the wall thickness of the cable guide pipe, the sound velocity of materials needs to be input, the repeated input of the sound velocity of different materials is complicated, and the obtained result can only be used for judging whether the quality of the cable guide pipe is qualified through a detection engineer, so that a diagnosis suggestion can not be automatically provided for judging whether the wall thickness of the cable guide pipe is qualified.
Disclosure of Invention
In order to solve the problems that the method for detecting the quality of the cable duct in the prior art is complicated in operation process and cannot provide an automatic quality diagnosis suggestion, the invention provides a method for detecting the quality of the cable duct, which comprises the following steps:
selecting the quality detection category of the cable guide pipe to be detected;
generating a display waveform of a measurement signal according to the acquired measurement signal of the cable guide pipe to be measured;
calculating the measured value of the cable guide pipe to be measured under the quality detection category according to the display waveform;
and determining the quality detection result of the cable guide pipe to be detected in the quality detection category according to the measured value of the cable guide pipe to be detected in the quality detection category and a preset standard value.
Further, before selecting the quality inspection category of the cable conduit to be inspected, the method further comprises the following steps:
and connecting the standard sample of the cable guide pipe with a signal sensor, and calibrating the signal sensor, wherein the signal sensor is used for collecting a measuring signal of the cable guide pipe to be measured after being calibrated.
Further, selecting the quality detection category of the cable guide pipe to be detected refers to determining the quality detection category of the cable guide pipe to be detected as thickness detection or sound velocity detection.
The method further comprises the steps of calibrating the cable duct standard sample, generating a standard value database of the cable duct standard sample aiming at different quality detection categories, updating the standard value database, adding a standard value of the newly calibrated cable duct standard sample into the standard value database, wherein the standard value database comprises a material name of the cable duct standard sample and a standard value after the cable duct standard sample is calibrated, and the standard value comprises a thickness standard value and a sound velocity standard value of the cable duct to be detected.
Further, generating a display waveform of the measurement signal according to the collected measurement signal of the cable guide pipe to be measured includes:
generating a first waveform of a measurement signal according to the acquired measurement signal of the cable guide pipe to be measured;
and setting waveform adjusting parameters according to the first waveform to generate a second waveform, and taking the second waveform as a display waveform.
Further, setting a waveform adjustment parameter according to the first waveform to generate a second waveform, and taking the second waveform as a display waveform includes:
adjusting the signal amplitude of the first waveform by changing the gain value;
adjusting the number of times of the first waveform display echo by changing the display range value;
the second waveform generated after the gain value and the display range value are changed is used as a display waveform;
and determining the amplitude of the position corresponding to the maximum value of the wave packet in the displayed waveform through gate setting, wherein the gate setting comprises selecting a gate to be set, and setting a gate initial position, a gate width and a gate height for the selected gate.
Further, calculating the measurement value of the cable guide pipe to be tested under the quality detection category according to the display waveform comprises:
when the quality detection category is thickness detection:
determining a first sound velocity measurement value of the cable guide pipe to be measured, wherein the first sound velocity measurement value is a sound velocity standard value of a cable guide pipe standard sample corresponding to the cable guide pipe to be measured called from a standard value database, or the sound velocity measurement value is determined after the cable guide pipe to be measured is calibrated on site;
selecting a calculation mode of the thickness measurement value, wherein the calculation mode comprises solving according to a first echo of a displayed waveform and solving according to a first echo and a second echo of the displayed waveform;
determining a first thickness measurement value of the cable guide pipe to be measured according to the first sound velocity measurement value of the cable guide pipe to be measured, the amplitude value and the selected calculation mode;
when the quality detection category is sound speed detection:
determining a second thickness measurement value of the cable guide pipe to be measured, wherein the second thickness measurement value is the thickness of the cable guide pipe measured by using other detection devices such as a vernier caliper;
and determining a second sound velocity measurement value of the cable guide pipe to be measured according to the second thickness measurement value of the cable guide pipe to be measured and the amplitude.
Further, determining the quality detection result of the cable conduit to be detected in the quality detection category according to the measured value of the cable conduit to be detected in the quality detection category and a preset standard value comprises:
when the quality detection category is thickness detection, the first thickness measurement value is differenced with the thickness standard value to obtain a thickness difference value, and when the thickness difference value is within a preset thickness error range, the quality detection of the thickness of the cable guide pipe to be detected is determined to be qualified;
and when the quality detection category is sound velocity detection, the second sound velocity measurement value is differed from the sound velocity standard value to obtain a sound velocity difference value, and when the sound velocity difference value is within a preset sound velocity error range, the sound velocity quality detection of the cable guide pipe to be detected is determined to be qualified.
According to another aspect of the invention, there is provided a system for detecting the quality of a cable duct, the system comprising:
the category selection unit is used for selecting the quality detection category of the cable guide pipe to be detected;
the waveform display unit is used for generating a display waveform of the measurement signal according to the acquired measurement signal of the cable guide pipe to be measured;
the data processing unit is used for calculating the measured value of the cable guide pipe to be measured under the quality detection category according to the display waveform;
and the detection result unit is used for determining the quality detection result of the cable guide pipe to be detected in the quality detection category according to the measured value of the cable guide pipe to be detected in the quality detection category and a preset standard value.
Furthermore, the system also comprises a calibration unit for setting parameters to calibrate the signal sensor after the standard sample of the cable guide pipe is connected with the signal sensor, wherein the signal sensor is used for collecting the measurement signal of the cable guide pipe to be measured after being calibrated.
Further, the selecting of the quality detection type of the cable guide pipe to be detected by the type selecting unit means that the quality detection type of the cable guide pipe to be detected is determined to be thickness detection or sound velocity detection.
The system further comprises a material library unit, which is used for calibrating the cable guide pipe standard sample, generating a standard value database of the cable guide pipe standard sample aiming at different quality detection categories, updating the standard value database, adding a standard value of the newly calibrated cable guide pipe standard sample into the standard value database, wherein the standard value database comprises a material name of the cable guide pipe standard sample and a standard value after the cable guide pipe standard sample is calibrated, and the standard value comprises a thickness standard value and a sound velocity standard value of the cable guide pipe to be detected.
Further, the waveform display unit generates a display waveform of the measurement signal according to the acquired measurement signal of the cable guide pipe to be measured;
generating a first waveform of a measurement signal according to the acquired measurement signal of the cable guide pipe to be measured;
and setting waveform adjusting parameters according to the first waveform to generate a second waveform, and taking the second waveform as a display waveform.
Further, the waveform display unit sets waveform adjustment parameters according to the first waveform to generate a second waveform, and the taking the second waveform as a display waveform includes:
adjusting the signal amplitude of the first waveform by changing the gain value;
adjusting the number of times of the first waveform display echo by changing the display range value;
the second waveform generated after the gain value and the display range value are changed is used as a display waveform;
and determining the amplitude of the position corresponding to the maximum value of the wave packet in the displayed waveform through gate setting, wherein the gate setting comprises selecting a gate to be set, and setting a gate initial position, a gate width and a gate height for the selected gate.
Further, the data processing unit calculating the measurement value of the cable guide pipe to be tested under the quality detection category according to the display waveform comprises:
when the quality detection category is thickness detection:
determining a first sound velocity measurement value of the cable guide pipe to be measured, wherein the first sound velocity measurement value is a sound velocity standard value of a cable guide pipe standard sample corresponding to the cable guide pipe to be measured called from a standard value database, or the sound velocity measurement value is determined after the cable guide pipe to be measured is calibrated on site;
selecting a calculation mode of the thickness measurement value, wherein the calculation mode comprises solving according to a first echo of a displayed waveform and solving according to a first echo and a second echo of the displayed waveform;
determining a first thickness measurement value of the cable guide pipe to be measured according to the first sound velocity measurement value of the cable guide pipe to be measured, the amplitude value and the selected calculation mode;
when the quality detection category is sound speed detection:
determining a second thickness measurement value of the cable guide pipe to be measured, wherein the second thickness measurement value is the thickness of the cable guide pipe measured by using other detection devices such as a vernier caliper;
and determining a second sound velocity measurement value of the cable guide pipe to be measured according to the second thickness measurement value of the cable guide pipe to be measured and the amplitude.
Further, determining the quality detection result of the cable conduit to be detected in the quality detection category according to the measured value of the cable conduit to be detected in the quality detection category and a preset standard value comprises:
when the quality detection category is thickness detection, the first thickness measurement value is differenced with the thickness standard value to obtain a thickness difference value, and when the thickness difference value is within a preset thickness error range, the quality detection of the thickness of the cable guide pipe to be detected is determined to be qualified;
and when the quality detection category is sound velocity detection, the second sound velocity measurement value is differed from the sound velocity standard value to obtain a sound velocity difference value, and when the sound velocity difference value is within a preset sound velocity error range, the sound velocity quality detection of the cable guide pipe to be detected is determined to be qualified.
According to another aspect of the invention, the invention also relates to a computer-readable storage medium having stored thereon a computer program for executing any one of the cable duct quality detection methods.
According to another aspect of the present invention, the present invention also provides an electronic device, comprising:
a processor;
a memory for storing the processor-executable instructions;
the processor is used for reading the executable instructions from the memory and executing the executable instructions to realize any one of the cable duct quality detection methods.
According to the quality detection method and system for the cable guide pipe, provided by the technical scheme of the invention, the detection category of the cable guide pipe to be detected is selected, the measurement signal is collected and the first waveform is displayed, the measured value is calculated according to the first waveform, and the quality detection result of the cable guide pipe to be detected in the quality detection category is determined according to the measured value and the preset standard value. The method and the system establish a standard value database aiming at the detection types of different materials by calibrating the standard sample of the cable guide pipe, and the standard value database can be automatically updated, when the standard value database does not have the standard value of the cable guide pipe to be detected, the standard sample corresponding to the cable electric pipe to be detected can be calibrated to obtain the standard value and then is supplemented into the standard value database, so that the sound velocity standard value can be directly called when the thickness measurement is realized, and when a diagnosis suggestion is provided, the thickness measurement value/the sound velocity measurement value can be directly compared with the standard value, and the quality detection suggestion is automatically given out.
Drawings
A more complete understanding of exemplary embodiments of the present invention may be had by reference to the following drawings in which:
FIG. 1 is a flow chart of a method of testing the quality of a cable duct according to a preferred embodiment of the present invention;
FIG. 2 is a schematic illustration of a signal sensor coupled to a cable guide for calibrating the signal sensor in accordance with a preferred embodiment of the present invention;
FIG. 3 is a schematic view of a system for testing the quality of a cable duct in accordance with a preferred embodiment of the present invention;
FIG. 4 is a schematic diagram of a calibration unit according to a preferred embodiment of the present invention;
FIG. 5 is a schematic view of a sound speed detection interface in accordance with a preferred embodiment of the present invention;
fig. 6 is a schematic view of a thickness detection interface according to a preferred embodiment of the present invention.
Detailed Description
The exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, however, the present invention may be embodied in many different forms and is not limited to the embodiments described herein, which are provided for complete and complete disclosure of the present invention and to fully convey the scope of the present invention to those skilled in the art. The terminology used in the exemplary embodiments illustrated in the accompanying drawings is not intended to be limiting of the invention. In the drawings, the same units/elements are denoted by the same reference numerals.
Unless otherwise defined, terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Further, it will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense. In particular, the cable duct of the present invention may be referred to as a cable bushing, a cable protection pipe, a power conduit, a communication pipe, etc. in practical applications, and the method and system may also be applied to quality inspection of pipes, such as a service pipe, similar to the cable duct.
Fig. 1 is a flow chart of a method of testing the quality of a cable duct according to a preferred embodiment of the present invention. The cable guide is of various types, such as organic polymer materials and metal materials. The principle of detecting wall thickness used is not the same for different kinds of cable ducts. For organic polymer, ultrasonic detection is generally used, and for metal materials, pulsed eddy current detection, electromagnetic ultrasonic detection, and ultrasonic detection may be used. In the preferred embodiment, an ultrasonic detection principle is adopted as an example, an excitation pulse is input to the signal sensor through the excitation circuit, the signal sensor vibrates under the action of the excitation pulse to generate ultrasonic waves, the ultrasonic waves are transmitted to the cable guide pipe to be detected through the coupling action of the coupling agent, the ultrasonic waves entering the cable guide pipe to be detected are reflected when being transmitted to the boundary surface, the reflected pulse is received by the signal sensor, and a voltage signal is converted into a numerical signal through an analog-digital converter and is acquired by the acquisition unit. The measurement signals collected by the signal unit are analyzed through computer software, the thickness of the wall of the cable guide pipe to be measured can be calculated according to the sound velocity of the cable guide pipe to be measured, and the sound velocity of the cable guide pipe to be measured can also be calculated according to the thickness of the wall of the processed cable guide pipe. Referring to fig. 1, a method 100 for testing the quality of a conduit according to a preferred embodiment of the present invention begins at step 101.
In step 101, a standard sample of the cable guide pipe is connected with a signal sensor, and the signal sensor is calibrated, wherein the signal sensor is used for acquiring a measurement signal of the cable guide pipe to be measured after being calibrated.
Before the wall thickness and the sound velocity of the cable guide pipe are measured by using the ultrasonic detection principle, the signal sensor needs to be calibrated. The appropriate probe (signal sensor) is selected according to the thickness and the diameter of the cable conduit to be tested, and the selectable probe specifications are 2.5P10 (2.5 means that the optimal frequency of the probe is 2.5MHz, and 10 means that the diameter of the probe is 10 mm), 5P10 and 2.5P 20. The higher the probe frequency, the higher the accuracy of the detection, but the shorter the distance traveled, and therefore the smaller the measurement range. The larger the probe diameter, the larger the excitation energy, the longer the propagation distance, and therefore the larger the measurement range. It has been found through experimentation that the most common probe format is 2.5P10, and the probe is selected to fulfill most of the inspection requirements. After the probe is selected, the probe is calibrated before use.
Fig. 2 is a schematic view of a signal sensor coupled to a cable guide for calibrating the signal sensor according to a preferred embodiment of the present invention. As shown in FIG. 2, after a proper amount of couplant is smeared on a certain point of the surface of the standard sample of the cable duct, the probe is vertically attached to the position of the standard sample of the cable duct with the wall thickness of 10.3mm, where the couplant is smeared. The standard sample refers to a tubular, rod-shaped or plate-shaped sample without doping treatment. And (3) after the signal sensor is connected with the standard cable guide pipe sample, setting attribute parameters of the excitation signal and calculating a sound velocity mode, changing a zero value until the thickness value is 10.3mm, and completing calibration.
At step 102, a quality testing category for the cable conduit under test is selected.
Preferably, selecting the quality detection category of the cable guide pipe to be detected refers to determining the quality detection category of the cable guide pipe to be detected as thickness detection or sound velocity detection.
Preferably, the method further comprises the steps of calibrating the cable duct standard sample, generating a standard value database of the cable duct standard sample aiming at different quality detection categories, updating the standard value database, adding a standard value of the newly calibrated cable duct standard sample into the standard value database, wherein the standard value database comprises a material name of the cable duct standard sample and a standard value after the cable duct standard sample is calibrated, and the standard value comprises a thickness standard value and a sound speed standard value of the cable duct to be detected.
In step 103, a display waveform of the measurement signal is generated according to the collected measurement signal of the cable conduit to be measured.
Preferably, generating a display waveform of the measurement signal according to the collected measurement signal of the cable guide pipe to be measured includes:
generating a first waveform of a measurement signal according to the acquired measurement signal of the cable guide pipe to be measured;
and setting waveform adjusting parameters according to the first waveform to generate a second waveform, and taking the second waveform as a display waveform.
Preferably, setting a waveform adjustment parameter according to the first waveform to generate a second waveform, and taking the second waveform as a display waveform includes:
adjusting the signal amplitude of the first waveform by changing the gain value;
adjusting the number of times of the first waveform display echo by changing the display range value;
the second waveform generated after the gain value and the display range value are changed is used as a display waveform;
and determining the amplitude of the position corresponding to the maximum value of the wave packet in the displayed waveform through gate setting, wherein the gate setting comprises selecting a gate to be set, and setting a gate initial position, a gate width and a gate height for the selected gate.
And before formal detection, connecting the cable guide pipe to be detected with a signal sensor. And when the thickness detection or the sound velocity detection is selected, the acquired measurement signal of the cable guide pipe to be detected is converted into a pulse waveform. Because the effect of the pulse waveform may not be ideal, for example, the amplitude is too small, and the display range is too large, at this time, the amplitude of the signal may be increased by increasing the gain, and the signal may only display the previous echo or the previous echoes by decreasing the display range of the signal. When the displayed waveform is clear enough, the maximum amplitude of the waveform is determined through the gate setting.
In step 104, the measured value of the cable guide pipe to be tested under the quality detection category is calculated according to the display waveform.
Preferably, calculating the measurement value of the cable guide pipe to be tested under the quality detection category according to the display waveform comprises:
when the quality detection category is thickness detection:
determining a first sound velocity measurement value of the cable guide pipe to be measured, wherein the first sound velocity measurement value is a sound velocity standard value of a cable guide pipe standard sample corresponding to the cable guide pipe to be measured called from a standard value database, or the sound velocity measurement value is determined after the cable guide pipe to be measured is calibrated on site;
selecting a calculation mode of the thickness measurement value, wherein the calculation mode comprises solving according to a first echo of a displayed waveform and solving according to a first echo and a second echo of the displayed waveform;
determining a first thickness measurement value of the cable guide pipe to be measured according to the first sound velocity measurement value of the cable guide pipe to be measured, the amplitude value and the selected calculation mode;
when the quality detection category is sound speed detection:
determining a second thickness measurement value of the cable guide pipe to be measured, wherein the second thickness measurement value is the thickness of the cable guide pipe measured by using other detection devices such as a vernier caliper;
and determining a second sound velocity measurement value of the cable guide pipe to be measured according to the second thickness measurement value of the cable guide pipe to be measured and the amplitude.
In step 105, determining the quality detection result of the cable conduit to be detected in the quality detection category according to the measured value of the cable conduit to be detected in the quality detection category and a preset standard value.
Preferably, determining the quality detection result of the cable guide pipe to be detected in the quality detection category according to the measured value of the cable guide pipe to be detected in the quality detection category and a preset standard value comprises:
when the quality detection category is thickness detection, the first thickness measurement value is differenced with the thickness standard value to obtain a thickness difference value, and when the thickness difference value is within a preset thickness error range, the quality detection of the thickness of the cable guide pipe to be detected is determined to be qualified;
and when the quality detection category is sound velocity detection, the second sound velocity measurement value is differed from the sound velocity standard value to obtain a sound velocity difference value, and when the sound velocity difference value is within a preset sound velocity error range, the sound velocity quality detection of the cable guide pipe to be detected is determined to be qualified.
Fig. 3 is a schematic view of a system for testing the quality of a cable duct according to a preferred embodiment of the present invention. The preferred embodiment is still exemplified by measuring the thickness and the sound velocity of the wall of the conduit by the principle of ultrasonic detection. As shown in fig. 3, the system 300 for detecting the quality of a cable duct according to the preferred embodiment includes:
the calibration unit 301 is configured to set parameters to calibrate the signal sensor after the standard sample of the cable guide pipe is connected with the signal sensor, wherein the signal sensor is calibrated and used for acquiring a measurement signal of the cable guide pipe to be measured.
Fig. 4 is a schematic diagram of a calibration unit according to a preferred embodiment of the present invention. In this embodiment, the cable duct standard sample is still made of PE, and the wall thickness is 10.3 mm. As shown in fig. 4, in the calibration unit 301, the emission voltage, the pulse width, and the repetition frequency are set to determine the properties of the excitation pulse input to the signal sensor by the excitation circuit, and the calculation mode is selected as the 1 st echo; the calibration was completed by changing the value of zero to a thickness value of 10.3mm, at which time the zero was 1.20 us. In addition, for the convenience of subsequent diagnosis, a diagnosis suggestion is given, and the error ranges of the thickness detection and the sound speed detection can be set at the calibration unit at the same time. In the present embodiment, the thickness tolerance is plus or minus 0.2mm, and the sound velocity tolerance is plus or minus 200 m/s.
A category selection unit 302 for selecting a quality inspection category of the cable conduit to be inspected.
Preferably, the selecting of the quality detection category of the cable guide pipe under test by the category selecting unit means determining that the quality detection category of the cable guide pipe under test is thickness detection or sound velocity detection.
Fig. 5 is a schematic view of a sound speed detection interface according to a preferred embodiment of the present invention. As shown in fig. 5, in the title bar of the interface, there are two options for thickness measurement and sound velocity measurement. The interface for detecting the thickness of the cable duct can be accessed when the thickness measurement is selected, and the interface for detecting the sound velocity of the cable duct can be accessed when the sound velocity measurement is selected.
And the waveform display unit 303 is configured to generate a display waveform of the measurement signal according to the acquired measurement signal of the cable guide to be measured. As shown in fig. 5, after the signal sensor collects the measurement signal of the cable duct to be measured, a pulse waveform is generated on the display interface.
Preferably, the generating, by the waveform display unit 303, a display waveform of the measurement signal according to the collected measurement signal of the cable guide to be measured includes:
generating a first waveform of a measurement signal according to the acquired measurement signal of the cable guide pipe to be measured;
and setting waveform adjusting parameters according to the first waveform to generate a second waveform, and taking the second waveform as a display waveform.
Preferably, the waveform display unit 303 sets a waveform adjustment parameter according to the first waveform to generate a second waveform, and the setting the second waveform as a display waveform includes:
adjusting the signal amplitude of the first waveform by changing the gain value;
adjusting the number of times of the first waveform display echo by changing the display range value;
the second waveform generated after the gain value and the display range value are changed is used as a display waveform;
and determining the amplitude of the position corresponding to the maximum value of the wave packet in the displayed waveform through gate setting, wherein the gate setting comprises selecting a gate to be set, and setting a gate initial position, a gate width and a gate height for the selected gate.
As shown in fig. 5, when the pulse waveform is displayed, the effect may not be ideal. At the moment, the adjustment of the waveform display effect can be realized by setting the display range and the gain and adjusting the numerical value in the gate setting option.
The material library unit 304 is configured to calibrate the cable guide standard sample, generate a standard value database of the cable guide standard sample for different quality detection categories, update the standard value database, add a standard value of the newly calibrated cable guide standard sample into the standard value database, where the standard value database includes a material name of the cable guide standard sample and a standard value after the cable guide standard sample is calibrated, and the standard value includes a thickness standard value and a sound velocity standard value of the cable guide to be detected.
As shown in fig. 5, in the sound velocity measurement interface, there is an option of adding a new material, by which a known material and a measured standard sound velocity can be stored in a standard database, and meanwhile, when the material name and the standard value of the cable material to be measured are not in the standard value database, a measured value can be input in a thickness setting option after a standard sample of the cable guide material to be measured is subjected to thickness measurement by a vernier caliper or the like on site, and then an amplitude value of a position corresponding to the maximum value of a wave packet is obtained by a waveform display unit, and then a sound velocity calibration value of the standard sample is obtained by calculation of the thickness measured value and the amplitude value and input, calibration of the standard sample is completed on site, and the standard value database is updated. The principle of the thickness standard value database generation is the same and is not illustrated here.
A data processing unit 305, configured to calculate, according to the display waveform, a measurement value of the cable conduit under test in the quality detection category.
Preferably, the data processing unit calculating the measurement value of the cable guide pipe to be tested under the quality detection category according to the display waveform comprises:
when the quality detection category is thickness detection:
determining a first sound velocity measurement value of the cable guide pipe to be measured, wherein the first sound velocity measurement value is a sound velocity standard value of a cable guide pipe standard sample corresponding to the cable guide pipe to be measured called from a standard value database, or the sound velocity measurement value is determined after the cable guide pipe to be measured is calibrated on site;
selecting a calculation mode of the thickness measurement value, wherein the calculation mode comprises solving according to a first echo of a displayed waveform and solving according to a first echo and a second echo of the displayed waveform;
determining a first thickness measurement value of the cable guide pipe to be measured according to the first sound velocity measurement value of the cable guide pipe to be measured, the amplitude value and the selected calculation mode;
when the quality detection category is sound speed detection:
determining a second thickness measurement value of the cable guide pipe to be measured, wherein the second thickness measurement value is the thickness of the cable guide pipe measured by using other detection devices such as a vernier caliper;
and determining a second sound velocity measurement value of the cable guide pipe to be measured according to the second thickness measurement value of the cable guide pipe to be measured and the amplitude.
As shown in fig. 5, in the sound velocity measurement interface, the thickness of the cable guide measured by using another detection device such as a vernier caliper is input into the thickness setting option frame, and after the amplitude of the position corresponding to the maximum value of the wave packet is obtained according to the waveform determined by the waveform display unit, the sound velocity measurement button is clicked, and then data processing is performed according to the input thickness value and the amplitude, so that the sound velocity measurement value can be determined. In this embodiment, the input thickness is 5.34mm, and the obtained sound velocity measurement value is 2282 m/s.
Fig. 6 is a schematic view of a thickness detection interface according to a preferred embodiment of the present invention. When the thickness is measured, the sound velocity of the cable guide pipe to be measured needs to be input, the sound velocity value can be determined by calling the material name and the sound velocity standard value in the sound velocity standard value database, as shown in fig. 6, if the material of the cable guide pipe to be measured is PE at present, and the sound velocity standard value of the material is 2314m/s, the sound velocity value can be directly input 2314 in sound velocity setting options. Besides calling data of a sound velocity standard value database, the sound velocity measured value obtained by adjusting waveform calculation can be used as the sound velocity value to be input by a sound velocity setting option in the sound velocity measurement interface after the thickness value of the cable guide pipe to be measured by other detection devices is input in the sound velocity measurement interface. Similar to sound velocity measurement, when the sound velocity value of the cable guide pipe to be measured is input, and the amplitude of the position corresponding to the maximum value of the wave packet in the waveform is obtained according to the pulse waveform determined by the acquired measurement signal, the thickness measurement value of the cable guide pipe to be measured can be calculated to be 5.37 mm.
And the detection result unit 306 is configured to determine a quality detection result of the cable conduit to be detected in the quality detection category according to a measurement value of the cable conduit to be detected in the quality detection category and a preset standard value.
Preferably, determining the quality detection result of the cable guide pipe to be detected in the quality detection category according to the measured value of the cable guide pipe to be detected in the quality detection category and a preset standard value comprises:
when the quality detection category is thickness detection, the first thickness measurement value is differenced with the thickness standard value to obtain a thickness difference value, and when the thickness difference value is within a preset thickness error range, the quality detection of the thickness of the cable guide pipe to be detected is determined to be qualified;
and when the quality detection category is sound velocity detection, the second sound velocity measurement value is differed from the sound velocity standard value to obtain a sound velocity difference value, and when the sound velocity difference value is within a preset sound velocity error range, the sound velocity quality detection of the cable guide pipe to be detected is determined to be qualified.
As shown in FIG. 5, the sound velocity standard value of the cable guide pipe material to be tested is the nominal sound velocity 2314, the sound velocity measured value is 2282, the absolute error of the sound velocity standard value and the sound velocity measured value is 32m/s, and the absolute error is within plus or minus 200m/s of the error range allowed by the calibration unit, so that the diagnosis suggestion is given to be within the allowable error range.
As shown in fig. 6, the standard thickness value of the cable duct material to be measured is 5.34mm of the nominal wall thickness, the measured thickness value is 5.37mm, the absolute error between the standard thickness value and the measured thickness value is 0.03mm, and the absolute error is within plus or minus 0.2mm of the allowable error range of the calibration unit, so that the diagnosis suggestion is given to be within the allowable error range.
In addition, the present invention is also a computer-readable storage medium storing a computer program for executing any one of the cable duct quality detection methods.
The present invention also provides an electronic device including:
a processor;
a memory for storing the processor-executable instructions;
the processor is used for reading the executable instructions from the memory and executing the executable instructions to realize any one of the cable duct quality detection methods.
The invention has been described with reference to a few embodiments. However, other embodiments of the invention than the one disclosed above are equally possible within the scope of the invention, as would be apparent to a person skilled in the art from the appended patent claims.
Generally, all terms used in the claims are to be interpreted according to their ordinary meaning in the technical field, unless explicitly defined otherwise herein. All references to "a/an/the [ device, component, etc ]" are to be interpreted openly as referring to at least one instance of said device, component, etc., unless explicitly stated otherwise. The steps of any method disclosed herein do not have to be performed in the exact order disclosed, unless explicitly stated.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.
Claims (12)
1. A method of testing the quality of a conduit for a cable, the method comprising:
calibrating the cable duct standard sample, generating a standard value database of the cable duct standard sample aiming at different quality detection categories, updating the standard value database, and adding a standard value of the newly calibrated cable duct standard sample into the standard value database, wherein the standard value database comprises a material name of the cable duct standard sample and a standard value after calibrating the cable duct standard sample, and the standard value comprises a thickness standard value and a sound velocity standard value of the cable duct to be detected;
selecting quality detection categories of the cable guide pipe to be detected, wherein the quality detection categories comprise thickness detection and sound velocity detection;
generating a display waveform of a measurement signal according to the acquired measurement signal of the cable guide pipe to be measured;
calculating the measured value of the cable guide pipe to be measured under the quality detection category according to the display waveform, wherein:
when the quality detection category is thickness detection:
determining a first sound velocity measurement value of the cable guide pipe to be measured, wherein the first sound velocity measurement value is a sound velocity standard value of a cable guide pipe standard sample corresponding to the cable guide pipe to be measured called from a standard value database, or the sound velocity measurement value is determined after the cable guide pipe to be measured is calibrated on site;
selecting a calculation mode of the thickness measurement value, wherein the calculation mode comprises solving according to a first echo of a displayed waveform and solving according to a first echo and a second echo of the displayed waveform;
determining a first thickness measurement value of the cable guide pipe to be measured according to a first sound velocity measurement value of the cable guide pipe to be measured, an amplitude value of a position corresponding to a maximum value of a wave packet in a display waveform and a selected calculation mode;
when the quality detection category is sound speed detection:
determining a second thickness measurement value of the cable guide pipe to be measured, wherein the second thickness measurement value is the thickness of the cable guide pipe measured by using other detection devices such as a vernier caliper;
determining a second sound velocity measurement value of the cable guide pipe to be measured according to the second thickness measurement value of the cable guide pipe to be measured and the amplitude value of the position corresponding to the maximum value of the wave packet in the display waveform;
and determining the quality detection result of the cable guide pipe to be detected in the quality detection category according to the measured value of the cable guide pipe to be detected in the quality detection category and a preset standard value.
2. The method of claim 1, further comprising, prior to selecting a quality testing category for the cable conduit under test:
and connecting the standard sample of the cable guide pipe with a signal sensor, and calibrating the signal sensor, wherein the signal sensor is used for collecting a measuring signal of the cable guide pipe to be measured after being calibrated.
3. The method of claim 1, wherein generating a display waveform of the measurement signal from the collected measurement signal of the cable guide under test comprises:
generating a first waveform of a measurement signal according to the acquired measurement signal of the cable guide pipe to be measured;
and setting waveform adjusting parameters according to the first waveform to generate a second waveform, and taking the second waveform as a display waveform.
4. The method of claim 3, wherein setting waveform adjustment parameters according to the first waveform to generate a second waveform, and wherein treating the second waveform as a display waveform comprises:
adjusting the signal amplitude of the first waveform by changing the gain value;
adjusting the number of times of the first waveform display echo by changing the display range value;
the second waveform generated after the gain value and the display range value are changed is used as a display waveform;
and determining the amplitude of the position corresponding to the maximum value of the wave packet in the displayed waveform through gate setting, wherein the gate setting comprises selecting a gate to be set, and setting a gate initial position, a gate width and a gate height for the selected gate.
5. The method of claim 4, wherein determining the quality testing result of the cable guide pipe under test in the quality testing category according to the measured value of the cable guide pipe under test in the quality testing category and a preset standard value comprises:
when the quality detection category is thickness detection, the first thickness measurement value is differenced with the thickness standard value to obtain a thickness difference value, and when the thickness difference value is within a preset thickness error range, the quality detection of the thickness of the cable guide pipe to be detected is determined to be qualified;
and when the quality detection category is sound velocity detection, the second sound velocity measurement value is differed from the sound velocity standard value to obtain a sound velocity difference value, and when the sound velocity difference value is within a preset sound velocity error range, the sound velocity quality detection of the cable guide pipe to be detected is determined to be qualified.
6. A system for testing the quality of a conduit, the system comprising:
the material library unit is used for calibrating the cable guide pipe standard sample, generating a standard value database of the cable guide pipe standard sample aiming at different quality detection categories, updating the standard value database, adding a standard value of the newly calibrated cable guide pipe standard sample into the standard value database, wherein the standard value database comprises a material name of the cable guide pipe standard sample and a standard value after the cable guide pipe standard sample is calibrated, and the standard value comprises a thickness standard value and a sound velocity standard value of the cable guide pipe to be detected;
the cable guide pipe quality detection device comprises a category selection unit, a quality detection unit and a sound velocity detection unit, wherein the category selection unit is used for selecting quality detection categories of a cable guide pipe to be detected, and the quality detection categories comprise thickness detection and sound velocity detection;
the waveform display unit is used for generating a display waveform of the measurement signal according to the acquired measurement signal of the cable guide pipe to be measured;
the data processing unit is used for calculating the measured value of the cable guide pipe to be measured under the quality detection category according to the display waveform, wherein:
when the quality detection category is thickness detection:
determining a first sound velocity measurement value of the cable guide pipe to be measured, wherein the first sound velocity measurement value is a sound velocity standard value of a cable guide pipe standard sample corresponding to the cable guide pipe to be measured called from a standard value database, or the sound velocity measurement value is determined after the cable guide pipe to be measured is calibrated on site;
selecting a calculation mode of the thickness measurement value, wherein the calculation mode comprises solving according to the first echo of the displayed waveform and solving according to the first echo and the second echo of the displayed waveform;
determining a first thickness measurement value of the cable guide pipe to be measured according to a first sound velocity measurement value of the cable guide pipe to be measured, an amplitude value of a position corresponding to a maximum value of a wave packet in a display waveform and a selected calculation mode;
when the quality detection category is sound speed detection:
determining a second thickness measurement value of the cable guide pipe to be measured, wherein the second thickness measurement value is the thickness of the cable guide pipe measured by using other detection devices such as a vernier caliper;
determining a second sound velocity measurement value of the cable guide pipe to be measured according to the second thickness measurement value of the cable guide pipe to be measured and the amplitude value of the position corresponding to the maximum value of the wave packet in the display waveform;
and the detection result unit is used for determining the quality detection result of the cable guide pipe to be detected in the quality detection category according to the measured value of the cable guide pipe to be detected in the quality detection category and a preset standard value.
7. The system of claim 6, further comprising a calibration unit for setting parameters to calibrate the signal sensor after the cable guide standard sample is connected to the signal sensor, wherein the signal sensor is calibrated to collect a measurement signal of the cable guide to be measured.
8. The system of claim 7, wherein the waveform display unit generates the display waveform of the measurement signal according to the collected measurement signal of the cable guide pipe to be measured, and comprises:
generating a first waveform of a measurement signal according to the acquired measurement signal of the cable guide pipe to be measured;
and setting waveform adjusting parameters according to the first waveform to generate a second waveform, and taking the second waveform as a display waveform.
9. The system of claim 8, wherein the waveform display unit sets waveform adjustment parameters according to the first waveform to generate a second waveform, and wherein taking the second waveform as a display waveform comprises:
adjusting the signal amplitude of the first waveform by changing the gain value;
adjusting the number of times of the first waveform display echo by changing the display range value;
the second waveform generated after the gain value and the display range value are changed is used as a display waveform;
and determining the amplitude of the position corresponding to the maximum value of the wave packet in the displayed waveform through gate setting, wherein the gate setting comprises selecting a gate to be set, and setting a gate initial position, a gate width and a gate height for the selected gate.
10. The system of claim 9, wherein determining the quality testing result of the cable guide under test in the quality testing category according to the measured value of the cable guide under test in the quality testing category and a preset standard value comprises:
when the quality detection category is thickness detection, the first thickness measurement value is differenced with the thickness standard value to obtain a thickness difference value, and when the thickness difference value is within a preset thickness error range, the quality detection of the thickness of the cable guide pipe to be detected is determined to be qualified;
and when the quality detection category is sound velocity detection, the second sound velocity measurement value is differed from the sound velocity standard value to obtain a sound velocity difference value, and when the sound velocity difference value is within a preset sound velocity error range, the sound velocity quality detection of the cable guide pipe to be detected is determined to be qualified.
11. A computer-readable storage medium, characterized in that it stores a computer program for performing the method of any of the preceding claims 1 to 5.
12. An electronic device, characterized in that the electronic device comprises:
a processor;
a memory for storing the processor-executable instructions;
the processor is configured to read the executable instructions from the memory and execute the executable instructions to implement the method of any one of the above 1 to 5.
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