CN111024593A - Ultrasonic flaw detection imaging system and control method thereof - Google Patents
Ultrasonic flaw detection imaging system and control method thereof Download PDFInfo
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- CN111024593A CN111024593A CN201910968309.2A CN201910968309A CN111024593A CN 111024593 A CN111024593 A CN 111024593A CN 201910968309 A CN201910968309 A CN 201910968309A CN 111024593 A CN111024593 A CN 111024593A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B17/00—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
- G01B17/02—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations for measuring thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/26—Arrangements for orientation or scanning by relative movement of the head and the sensor
- G01N29/265—Arrangements for orientation or scanning by relative movement of the head and the sensor by moving the sensor relative to a stationary material
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
Abstract
The invention provides an ultrasonic flaw detection imaging system, which comprises an ultrasonic detection device for detecting the thickness value of a detection point of a detected object by utilizing ultrasonic waves; an encoder for positioning the position of the detection point; a data acquisition card for collecting the position information of the detection points; and acquiring the position information and corresponding thickness values of all the detection points, and drawing a control and processing device of the corrosion damage image of the detected object. The invention also provides an implementation method of the ultrasonic flaw detection imaging system. The ultrasonic flaw detection imaging system can rapidly and intuitively image the corrosion condition of the detected object. The invention can adjust the parameters of the transmitted ultrasonic waves to facilitate detection, and can adjust the parameters to facilitate observation when the received ultrasonic waves are displayed. The invention automatically positions the detection point by utilizing the linear encoder and the rotary encoder, and the linear encoder and the rotary encoder have lower price, thereby realizing more accurate positioning.
Description
Technical Field
The invention relates to the field of ultrasonic detection, in particular to an ultrasonic flaw detection imaging system and a control method thereof.
Background
Corrosion occurring in the internal structure of the welded part often cannot be observed by naked eyes. However, corrosion inside the welded part is gradually increased with the passage of time, and if a severe environment such as high temperature and high pressure, acidic substance flow, and the like is generated, the corrosion is further increased. When the corrosion condition is serious enough to exceed the allowable condition, serious safety accidents are likely to be caused. Therefore, it is very necessary to detect corrosion damage of materials, especially welded materials, and there are some apparatuses for detecting corrosion of materials by ultrasonic waves in the market, but most of them detect the thickness of an object at different positions by ultrasonic waves to estimate the corrosion of the object. However, the conventional detection method can only display the measured waveform and thickness information, and the display of the detection result is not fast and intuitive enough and cannot accumulate and display the detection result. From the above, it is necessary to develop a system for rapidly detecting and imaging the corrosion of a material.
At present, the existing Chinese invention patent discloses a three-dimensional ultrasonic nondestructive testing system capable of automatically positioning and imaging. The detection system comprises an integrated ultrasonic probe, a data line, an ultrasonic signal generation and receiver, a USB interface line and a control and processing equipment data processing system, wherein data collected by the integrated ultrasonic probe is transmitted to the control and processing equipment data processing system for processing, a three-dimensional ultrasonic nondestructive detection image of the detected object is obtained, and the size and the position of internal defects or damages of the detected object are displayed. The detection system can automatically position and detect the position, and also keeps the advantages of convenience and flexibility of handheld ultrasonic single-point scanning. The integrated ultrasonic probe comprises a milemeter, an ultrasonic probe, a shell and an inertia measuring instrument, the position of the ultrasonic probe is positioned in real time through the milemeter and the inertia measuring instrument, but the price of the inertia measuring instrument is not low.
Implement novel patent in domestic has also announced a non-contact three-dimensional ultrasonic imaging system based on control and treatment facility vision technique based on binocular vision, the utility model discloses an ultrasonic transducer, install two video capture device and three-dimensional imaging processing apparatus on ultrasonic transducer, three-dimensional imaging processing apparatus changes the scanning data that ultrasonic transducer returned and forms two-dimensional scanning image, then handles into three-dimensional scanning image with two-dimensional scanning image through the motion trail of calculating video capture device's ultrasonic transducer. The device is simple to operate and high in positioning accuracy; however, this type of product is often costly and is used in the medical field. Neither of the above two patents mentions real-time display of waveform information of the transmitted ultrasonic waves, and does not mention that the wavelength, frequency, etc. of the transmitted ultrasonic waves can be adjusted according to the detection requirements, whereas in the field of ultrasonic flaw detection, when the size of a defect is smaller than the wavelength of the transmitted ultrasonic waves, the reflected ultrasonic waves cannot be received, and thus damage detection cannot be performed. It is preferable that the ultrasonic damage probe can adjust the transmitted ultrasonic waves and display the waveform information of the transmitted ultrasonic waves in real time.
From the foregoing, there is a need for a rapid material corrosion detection imaging device that is easy to set up, low in cost, and suitable for use in the industrial field, and that can adjust the number of ultrasonic waves and collection points emitted in real time according to the detection requirement.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
At present, the number of ultrasonic corrosion damage detection imaging systems in China is small, the existing ultrasonic corrosion damage detection imaging systems often need to be internally provided with video capturing devices or inertial measurement instruments and the like with high cost, and part of products cannot adjust ultrasonic waves in real time, display waveform information of the ultrasonic waves in real time or select the number of sampling points. Aiming at the problems, the invention provides the ultrasonic corrosion damage detection imaging system which has lower cost, is simple and convenient to operate, can quickly and intuitively reflect the corrosion damage condition of the material, and can adjust the ultrasonic waves and display the waveform information of the ultrasonic waves in real time.
The invention provides a hardware structure of an ultrasonic flaw detection imaging system, which comprises an ultrasonic detection device for detecting the thickness value of a detection point of a detected object by using ultrasonic waves; an encoder for positioning the position of the detection point; a data acquisition card for collecting the position information of the detection points; and acquiring the position information and corresponding thickness values of all the detection points, and drawing a control and processing device of the corrosion damage image of the detected object.
Further, the control and processing equipment and the ultrasonic detection device are communicated with each other in real time; the ultrasonic detection device is provided with a probe which can transmit ultrasonic waves to the detection point and receive the ultrasonic waves reflected by the detection point; and the transmitted ultrasonic wave is transmitted to the control and processing equipment according to the ultrasonic wave parameter value set by the control and processing equipment and the received ultrasonic wave waveform information.
That is, the ultrasonic detection device controls the transmitted ultrasonic waves through the control and processing device, and transmits waveform information of the received ultrasonic waves to the control and processing device.
Furthermore, the probe is fixedly connected with an encoder for recording the real-time position of the detection point, and the encoder comprises a linear encoder for calculating the real-time moving distance of the detection point and a rotary encoder for calculating the real-time moving direction; the linear encoder and the rotary encoder are respectively connected with the input end of the data acquisition card, the output end of the data acquisition card is connected with the control and processing equipment, and the position information of the probe is transmitted to the control and processing equipment through the data acquisition card; preferably, the linear encoder is an incremental linear encoder and the rotary encoder is an incremental rotary encoder.
Namely, the position of a detection point is positioned in real time by utilizing a linear encoder and a rotary encoder, and the position information of the detection point is sent to a control and processing device.
As an embodiment, the present invention provides a method for implementing the above ultrasonic flaw detection imaging system, including the following steps:
in step S10, the ultrasonic inspection device calculates the thickness values of all inspection points and transmits them to the control and processing device.
In step S20, the encoder obtains the real-time positions of all the detection points, and transmits the real-time positions to the control and processing device.
And step S30, the control and processing device draws and displays the corrosion damage image of the detected object according to the acquired thickness values of all the detection points and the corresponding position information.
Further, in step S10, in the detection process, the probe of the ultrasonic detection apparatus emits ultrasonic waves according to the ultrasonic parameter values set in the control and processing device; a window is arranged in the control and processing equipment to display a waveform image of the ultrasonic wave received by the probe; preferably, a software operation interface is provided in the control and processing device, an input box for inputting ultrasonic parameter values is provided on the software operation interface, and the ultrasonic parameter values are input in the input box.
The ultrasonic wave emitted by the ultrasonic detection device is favorable for detecting the corrosion damage of a detected object according to the parameter values set in the control and processing equipment; and the received waveform information of the ultrasonic waves is sent to the control and processing equipment, and the waveform diagram of the received ultrasonic waves is displayed, so that the corrosion damage condition in the measured object can be observed conveniently.
Further, the parameter values of the ultrasonic waves specifically set in the control and processing device are: the control and processing equipment controls the frequency range, the gain value and the detection range of the ultrasonic waves emitted by the probe; preferably, a gain value, an input box of a detection range and a selection box of a frequency range are set on the software operation interface.
Further, the waveform diagram of the received ultrasonic waves displayed in the control and processing device is adjusted, and the parameter adjusting method is specifically as follows: the control and processing equipment is internally provided with the number of sampling points and pulse displacement so as to adjust the waveform image of the ultrasonic wave received by the probe displayed in the window; preferably, the software operation interface is provided with an input frame for setting the number of sampling points and the pulse displacement.
Further, in step S20, the data acquisition card records the position information of the detection point obtained by the linear encoder and the rotary encoder and transmits the position information to the control and processing device; the control and processing equipment converts and calculates X, Y axis coordinate values of the monitoring points according to the position information of the monitoring points; preferably, the real-time X, Y axis coordinate values of the detection points are displayed on the software operation interface.
Further, in step S30, when the control and processing device draws the corrosion damage image of the detected object, displaying each detection point at a different position on the screen of the control and processing device according to the X, Y axis coordinate value of each detection point; setting the color displayed by each detection point according to the corresponding thickness value of each detection point; preferably, the control and processing device draws an image of the corrosion damage of the detected object to be displayed in a window of the software operation interface.
The control and processing equipment of the invention draws a corrosion damage map of the measured object according to the thickness values and positions of all the detection points.
Further, the control and processing equipment controls the ultrasonic detection device to start and stop communication with the control and processing equipment, the data acquisition card to start and stop communication with the control and processing equipment, and starts and stops drawing the corrosion damage image of the measured object; preferably, the software operation interface is provided with a start detection button and a stop detection button which respectively control the ultrasonic detection device and the control and processing equipment to start and stop communication, a connection button and a disconnection button which respectively control the data acquisition card and the control and processing equipment to start and stop communication, and a drawing button and a stop button which respectively control the ultrasonic corrosion damage detection imaging system to start and stop drawing the corrosion damage image of the detected object.
After adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects:
1) the ultrasonic corrosion damage detection imaging system can rapidly and intuitively image the corrosion condition of the detected object, so that the corrosion condition of some materials which are difficult to observe by naked eyes can be detected more intuitively, and safety accidents caused by corrosion of the materials are avoided.
2) The ultrasonic corrosion damage detection imaging system of the invention positions the ultrasonic probe by virtue of the linear encoder and the incremental spiral encoder, the linear encoder and the rotary encoder are relatively low in price, and the ultrasonic probe is connected with the encoder with a small volume, so that the ultrasonic corrosion damage detection imaging system of the invention is relatively portable.
3) The ultrasonic corrosion damage detection imaging system is composed of an ultrasonic detection device, two encoders, a data acquisition card and a control and processing device, namely the ultrasonic corrosion damage detection imaging system is convenient to build.
4) The software operation interface in the ultrasonic corrosion damage detection imaging system can display the waveform information of the ultrasonic waves in real time, and the parameter values of the ultrasonic waves can be changed on the software operation interface according to the detection requirement to adjust the ultrasonic waves.
5) The software operation interface in the ultrasonic corrosion damage detection imaging system can display the position information of the detection point in real time, and a window is independently designed to display a drawn three-dimensional graph of the corrosion damage of the material, wherein different colors represent different thicknesses of the material, so that the corrosion damage result of the material is more visual. Is obvious. And the window can display the accumulated detection result, and can more intuitively display all corrosion conditions of the material.
Drawings
FIG. 1 is a schematic diagram of the hardware components of an ultrasonic corrosion damage detection imaging system in embodiment 1 of the present invention;
fig. 2 is a schematic diagram of an implementation procedure of an ultrasonic corrosion damage detection imaging system in embodiment 2 of the present invention.
Reference numbers in the drawings illustrate: 1. an ultrasonic detection device; 2. a control and processing device; 3. a probe; 4. a linear encoder; 5. a rotary encoder; 6. a data acquisition card.
Detailed Description
The inner tub of the washing machine and the washing machine of the present invention will be described in detail with reference to the accompanying drawings:
example 1
As shown in fig. 1, the present embodiment provides hardware of an ultrasonic flaw detection imaging system. The ultrasonic flaw detection imaging system provided by the embodiment can be built by the ultrasonic detection device 1, the data acquisition card 6, the linear encoder 4, the rotary encoder 5 and the control and processing equipment 2 which can be generally purchased in the market at present, and the ultrasonic flaw detection imaging system is convenient and rapid to build. Under the condition of having the ultrasonic detection device 1, the ultrasonic flaw detection imaging system which can more intuitively and quickly reflect the corrosion damage condition of the detected object in the embodiment can be built only by slightly modifying. The ultrasonic inspection apparatus 1 in this embodiment may be an ultrasonic flaw detector, and the control and processing device 2 may be a computer device.
In this embodiment, the ultrasonic flaw detection imaging system has specific requirements for hardware formed by each part: the ultrasonic detection device 1 can detect the thickness value of a detection point of a measured object by using ultrasonic waves, and provide wave pattern information of the transmitted and received ultrasonic waves and adjust the transmitted ultrasonic waves. The positions of the detection points can be positioned for the linear encoder 4 and the rotary encoder 5; the data acquisition card 6 can collect the position information of the detection points; the control and processing device 2 can acquire the position information of all the detection points in the data acquisition card 6 and the thickness values of the corresponding detection points obtained in the ultrasonic detection device 1, and process and draw the corrosion damage image of the detected object according to the position information and the thickness information.
In this embodiment, the ultrasonic detection device 1 can communicate with the control and processing device 2 in real time; the ultrasonic detection apparatus 1 includes a probe 3 that can emit ultrasonic waves to a detection point and receive the ultrasonic waves reflected from the detection point. The parameter values of the ultrasonic waves are set in the control and processing device 2 and the ultrasonic waves are emitted according to the parameter values of the ultrasonic waves. The general operating principle of the ultrasonic detection apparatus 1 is: in a uniform material, the existence of defects will cause discontinuity of the material, which often causes inconsistency of acoustic impedance, and it is known from reflection theorem that ultrasonic waves will be reflected on an interface between two media with different acoustic impedances, and the magnitude of the reflected energy is related to the difference of the acoustic impedances of the media on both sides of the interface and the orientation and the magnitude of the interface. Namely, the defect in the material is judged according to the condition of the ultrasonic wave emitted back in the material. When the size of the defect in the material is equal to or larger than the wavelength of the ultrasonic wave, the ultrasonic wave is reflected back on the defect, and the flaw detector can display the reflected wave; if the size of the defect is smaller than the wavelength, the sound wave bypasses the defect and cannot be reflected. Therefore, as can be seen from the above, when the ultrasonic inspection apparatus 1 is used, in order to facilitate observation of corrosion defects inside the object to be inspected, the parameter value of the transmitted ultrasonic wave should be adjusted and the waveform information of the reflected ultrasonic wave should be displayed in time. The sent ultrasonic parameter value is set in the control and processing device 2 and is transmitted to the ultrasonic detection device 1, and the probe 3 of the ultrasonic detection device 1 emits ultrasonic waves according to the ultrasonic parameter value; the ultrasonic detection device 1 transmits ultrasonic information received by the probe 3 to the control and processing apparatus 2, and displays a waveform diagram of the received ultrasonic. The ultrasonic detection device can emit ultrasonic waves according to the set parameter values of the ultrasonic waves in the detection process, and is convenient to set proper ultrasonic waves to detect corrosion damage in an object.
In this embodiment, a probe 3 of the ultrasonic detection apparatus 1 is fixedly connected with a linear encoder 4 and a rotary encoder 5, the ultrasonic probe 3 moves along any outer surface of the object to be detected to detect the thickness of the object to be detected, and the linear encoder 4 and the rotary encoder 5 fixedly connected to the probe 3 can record the real-time position information of the probe 3. And the linear encoder 4 and the rotary encoder 5 are respectively connected with the input end of the data acquisition card 6, and the output end of the data acquisition card 6 is connected with the control and processing device 2, so that the position information of the probe 3 is transmitted to the control and processing device 2 in time.
In the present embodiment, the probe 3 is used to emit ultrasonic waves to the detection point for detection, and therefore the position of the probe 3 is the position of the detection point. While observing the movement of the probe 3, it can be seen that the movement of the probe 3 includes a displacement in the direction of movement and a movement in the direction of movement. Therefore, the probe 3 is provided with a linear encoder 4 for calculating the moving distance of the detection point, and a rotary encoder 5 for calculating the moving direction of the detection point. The linear encoder 4 is preferably an incremental linear encoder and the rotary encoder 5 is preferably an incremental rotary encoder, preferably an incremental encoder, since the incremental encoder does not require a fixed starting point. The price of linear encoder 4, rotary encoder 5 in this embodiment compares for other positioning device, for example inertia measuring apparatu, video capture device etc. that mention in the background art, and the price is cheap relatively, and linear encoder 4 and rotary encoder 5 buy more easily, builds the convenience.
In the embodiment, the ultrasonic detection device 1 is used for measuring the thickness values of all the detection points, and the thickness values of all the detection points are transmitted to the control and processing equipment 2 through the communication between the ultrasonic detection device 1 and the control and processing equipment 2; recording the real-time position of a detection point by using a linear encoder 4 and a rotary encoder 5, and sending the real-time position to the control and processing equipment 2 through a data acquisition card 6; and finally, the control and processing equipment 2 acquires the thickness information and the corresponding position information of the detection point so as to draw a corrosion damage image of the detected object according to the information, so that the corrosion damage condition of the detected object can be detected conveniently and intuitively.
Example 2
As shown in fig. 2, the present embodiment provides an implementation of an ultrasonic flaw detection imaging system. The hardware in this embodiment is the ultrasonic flaw detection imaging system described in embodiment 1. In this embodiment, the step of detecting the thickness value of each detection point of the object to be detected by using the ultrasonic detection apparatus 1 is:
step S100, preliminarily setting a parameter value of the transmitted ultrasonic wave in the control and processing device 2, preferably, setting a software operation interface in the control and processing device 2 of the ultrasonic flaw detection imaging system, setting an input frame for inputting the parameter value of the transmitted ultrasonic wave on the software operation interface, and preliminarily setting the parameter value of the ultrasonic wave.
In step S200, the control and processing device 2 transmits the parameter value of the ultrasonic wave set in step S10 to the ultrasonic detection apparatus 1, and the ultrasonic detection apparatus 1 controls the probe 3 to start transmitting the ultrasonic wave to the detection point of the object to be detected according to the parameter value of the ultrasonic wave.
Step S300, the probe 3 receives the ultrasonic wave reflected back by the object to be measured, and communicates with the control and processing device 2 in real time through the ultrasonic detection device 1, and transmits the reflected ultrasonic wave information to the control and processing device 2, and displays the waveform diagram of the reflected ultrasonic wave on the screen of the control and processing device 2, and preferably displays the waveform diagram of the reflected ultrasonic wave on the window arranged on the software operation interface.
Step S400, according to the waveform image of the reflected ultrasonic wave or actual needs, in the input frame of the parameter value of the transmitted ultrasonic wave of the software operation interface, adjusting the parameter value of the ultrasonic wave, and sending the newly modified parameter value of the ultrasonic wave to the ultrasonic detection device 1, where the ultrasonic detection device 1 transmits the ultrasonic wave from the newly controlled probe 3 according to the newly modified parameter value of the ultrasonic wave.
Step S500, the ultrasonic detection device 1 analyzes and calculates the thickness of the detected object at each detection point according to the transmitted ultrasonic waves and the ultrasonic waves reflected by the inside of the detected object, and transmits the thickness values of all the detection points to the control and processing device 2 in real time.
In the present embodiment, the reason why the parameter value of the ultrasonic wave can be set both at the start of the inspection and during the inspection of the ultrasonic inspection device 1 has been discussed in embodiment 1, and it is preferable that a software operation interface is provided in the control and processing apparatus 2, an input box for inputting the ultrasonic wave parameter value is provided on the software operation interface, and the ultrasonic wave parameter value is input in the input box. The reason for setting up the wave form of the ultrasonic wave that the window shows and receiving is whether the ultrasonic wave of observation transmission is convenient for the corrosion damage of testee inside also. Further preferably, a window is set on the software operation interface to display a waveform image of the ultrasonic wave received by the probe 3 in real time, and the waveform image is referred to when the parameter value of the ultrasonic wave is modified.
In the present embodiment, the parameter values of the ultrasonic waves set in the control and processing device 2 include an ultrasonic wave frequency range, a gain value, and a detection range. Preferably, a gain value, an input frame of a detection range, and a selection frame of an ultrasonic frequency range are set on the software operation interface. Since the wavelength of the ultrasonic wave is equal to the reciprocal of the frequency, namely, the wavelength of the ultrasonic wave can be modified by modifying the frequency range of the ultrasonic wave; as can be seen from the foregoing, the frequency range of the ultrasonic wave is adjusted because the size of the defect must be larger than the wavelength before the defect can be detected. For the same reason, the purpose of adjusting the ultrasonic wave to detect the corrosion damage in the measured object can be realized by adjusting the gain value and the detection range.
In this embodiment, parameters such as the number of sampling points and pulse displacement also set in the control and processing device 2 are used to adjust the waveform image of the ultrasonic wave received by the probe 3 displayed in the window in real time; the number of sampling points represents the number of sampling points in the composition graph of the ultrasonic reflection curve, and the pulse displacement can move the oscillogram. Preferably, the software operation interface is provided with an input frame for setting the number of sampling points and the pulse displacement. Namely, the displayed oscillogram of the received ultrasonic wave is adjusted through parameters such as the number of sampling points, pulse displacement and the like, so that the oscillogram of the ultrasonic wave is more convenient to observe.
In this embodiment, the ultrasonic detection device 1 detects the thickness values of all the detection points, and can communicate with the control and processing device 2 in real time, and set and modify the parameter value of the ultrasonic wave through the control and processing device 2 at any time, so that the ultrasonic wave emitted by the ultrasonic detection device 1 in this embodiment is convenient for detecting the corrosion damage in the object to be detected. And the oscillogram of the received ultrasonic wave is displayed in real time, so that the corrosion damage condition of the measured object can be observed conveniently.
In this embodiment, the ultrasonic flaw detection imaging system, which uses the linear encoder 4 and the rotary encoder 5 to obtain the position information of the detection point, includes the following steps:
step S600, the probe 3 moves on any outer surface of the object to be measured, the linear encoder 4 fixedly connected to the probe 3 obtains the displacement of the real-time movement of the detection point, and the rotary encoder 5 fixedly connected to the probe 3 obtains the included angle between the real-time movement direction of the detection point and the horizontal direction.
Step S700, the linear encoder 4 and the rotary encoder 5 record the real-time position information of the probe 3 through the data acquisition card 6, and transmit the real-time position information in the data acquisition card 6 to the control and processing device 2.
Step S800, the control and processing device 2 calculates a real-time X, Y coordinate value of the probe 3 according to the real-time position information of the probe 3.
The final control and processing device 2 draws the corrosion damage image of the detected object through the acquired thickness values of all the detection points and the corresponding position information of the detection points, and comprises the following steps:
step S900, when the control and processing device 2 draws the corrosion damage image of the detected object, each detection point is displayed at different positions of the screen according to the X, Y axis coordinate value of each detection point; and setting the color displayed by each detection point according to the corresponding thickness value of each detection point.
The control and processing device 2 controls the ultrasonic detection device 1 to start and stop communication with the control and processing device 2, and the data acquisition card 6 to start and stop communication with the control and processing device 2, and start and stop drawing the corrosion damage image of the object to be measured.
Preferably, a start detection button and a stop detection button for respectively controlling the ultrasonic detection device 1 and the control and processing equipment 2 to start and stop communication are arranged on the software operation interface, a connection button and a disconnection button for respectively controlling the data acquisition card 6 and the control and processing equipment 2 to start and stop communication are respectively arranged on the software operation interface, and a drawing button and a stop button for respectively controlling the ultrasonic flaw detection imaging system to start and stop drawing the corrosion damage image of the detected object are respectively arranged on the software operation interface.
When the start detection button is clicked, the control and processing device 2 starts communication with the ultrasonic detection device 1, the ultrasonic detection device 1 starts transmission of ultrasonic waves according to the ultrasonic parameter values set in the control and processing device 2, the ultrasonic detection device 1 starts transmission of received ultrasonic information to the control and processing device 2 in synchronization, and the control and processing device 2 displays the received ultrasonic image. After the detection is stopped by clicking, the corresponding control and processing device 2 is disconnected from the ultrasonic detection device 1. When the connection button is clicked, the data acquisition card 6 starts to communicate with the control and processing device 2, and the real-time position information of the probe 3 is sent to the control and processing device 2; when the click is disconnected, the data acquisition card 6 stops communicating with the control and processing device 2. When the drawing is clicked, the control and processing device 2 starts to draw the corrosion damage image of the measured object according to the acquired position information and thickness information of the detection point, and when the clicking is stopped, the whole system stops working.
In the embodiment, the ultrasonic flaw detection imaging system is simple in implementation steps, and the corrosion damage image of the detected object obtained through operation can display the corrosion damage condition of ultrasonic waves visually. In the operation process, the parameter value of the transmitted ultrasonic wave can be adjusted so as to be beneficial to detecting the corrosion damage of the detected object; the real-time position of the probe 3 is directly obtained through the linear encoder 4 and the rotary encoder 5 in the moving process of the probe 3, and the method is simple and convenient.
The present invention is not limited to the above embodiments, and any person skilled in the art can make many modifications and changes to the equivalent embodiments without departing from the scope of the present invention.
Claims (10)
1. An ultrasonic flaw detection imaging system is characterized by comprising an ultrasonic detection device (1) for detecting the thickness value of a detection point of a detected object by utilizing ultrasonic waves;
an encoder for positioning the position of the detection point;
a data acquisition card (6) for collecting the position information of the detection point;
and the control and processing equipment (2) is used for acquiring the position information and the corresponding thickness values of all the detection points and drawing the corrosion damage image of the detected object.
2. An ultrasonic flaw detection imaging system according to claim 1, characterized in that the control and processing device (2) communicates with the ultrasonic detection apparatus (1) in real time;
the ultrasonic detection device (1) is provided with a probe (3) which can emit ultrasonic waves to a detection point and receive the ultrasonic waves reflected by the detection point;
the transmitted ultrasonic wave is transmitted to the control and processing device (2) according to the ultrasonic wave parameter value set by the control and processing device (2) and the waveform information of the received ultrasonic wave is transmitted to the control and processing device (2).
3. The ultrasonic flaw detection imaging system according to claim 2, wherein the probe (3) is fixedly connected with an encoder for recording the real-time position of the detection point, and the encoder comprises a linear encoder (4) for calculating the real-time moving distance of the detection point and a rotary encoder (5) for calculating the real-time moving direction of the detection point;
the linear encoder (4) and the rotary encoder (5) are respectively connected with the input end of the data acquisition card (6), the output end of the data acquisition card (6) is connected with the control and processing device (2), and the position information of the probe (3) is transmitted to the control and processing device (2) through the data acquisition card (6);
preferably, the linear encoder (4) is an incremental linear encoder (4) and the rotary encoder (5) is an incremental rotary encoder (5).
4. A method of controlling an ultrasonic flaw detection imaging system according to claims 1 to 3, comprising the steps of:
step S10, the ultrasonic detection device calculates the thickness values of all detection points and transmits the thickness values to the control and processing equipment (2);
step S20, the encoder obtains the real-time positions of all the detection points and transmits the real-time positions to the control and processing equipment (2);
and step S30, the control and processing device (2) draws and displays the corrosion damage image of the detected object according to the acquired thickness values of all the detection points and the corresponding position information.
5. The control method of the ultrasonic flaw detection imaging system according to claim 4, wherein in the step S10, during the detection, the probe (3) of the ultrasonic detection device (1) emits ultrasonic waves according to the ultrasonic parameter values set in the control and processing device (2);
a window is arranged in the control and processing device (2) to display the waveform image of the ultrasonic wave received by the probe (3);
preferably, a software operation interface is provided in the control and processing device (2), an input box for inputting ultrasonic parameter values is provided on the software operation interface, and the ultrasonic parameter values are input in the input box.
6. The control method of an ultrasonic flaw detection imaging system according to claim 5, wherein the control and processing device (2) controls the frequency range, gain value, detection range of the ultrasonic waves emitted by the probe (3) during detection;
preferably, a gain value, an input box of a detection range and a selection box of a frequency range are set on the software operation interface.
7. The control method of the ultrasonic flaw detection imaging system according to claim 5, characterized in that the control and processing device (2) sets the number of sampling points and the pulse displacement to adjust the waveform image of the ultrasonic wave received by the probe (3) displayed in the window;
preferably, the software operation interface is provided with an input frame for setting the number of sampling points and the pulse displacement.
8. The control method of the ultrasonic flaw detection imaging system according to claim 4, wherein in step S20, the data acquisition card (6) records the position information of the detection points obtained by the linear encoder (4) and the rotary encoder (5) and transmits the position information to the control and processing device (2);
the control and processing device (2) converts and calculates X, Y axial coordinate values of the monitoring points according to the position information of the monitoring points;
preferably, the real-time X, Y axis coordinate values of the detection points are displayed on the software operation interface.
9. The control method of the ultrasonic flaw detection imaging system according to claim 4, wherein in step S30, when the control and processing device (2) draws a corrosion damage image of the detected object, the respective detection points are displayed at different positions on the screen of the control and processing device (2) based on the X, Y axis coordinate values of the respective detection points; setting the color displayed by each detection point according to the corresponding thickness value of each detection point;
preferably, the control and processing device (2) displays the corrosion damage image of the detected object in a window of the software operation interface.
10. The control method of the ultrasonic flaw detection imaging system according to claim 4, characterized in that the control and processing device (2) controls the ultrasonic inspection apparatus (1) to start and stop communication with the control and processing device (2), the data acquisition card (6) to start and stop communication with the control and processing device (2), and the drawing of the corrosion damage image of the object to be inspected is started and stopped;
preferably, the software operation interface is provided with a start detection button and a stop detection button which respectively control the ultrasonic detection device (1) and the control and processing equipment (2) to start and stop communication, a connection button and a disconnection button which respectively control the data acquisition card (6) and the control and processing equipment (2) to start and stop communication, and a drawing button and a stop button which respectively control the ultrasonic corrosion damage detection imaging system to start and stop drawing the corrosion damage image of the detected object.
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103245726A (en) * | 2013-04-02 | 2013-08-14 | 华东理工大学 | Device and method for detecting material hydrogen damage through ultrasonic surface waves |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103245726A (en) * | 2013-04-02 | 2013-08-14 | 华东理工大学 | Device and method for detecting material hydrogen damage through ultrasonic surface waves |
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