CN108982669A - A kind of an inscription on a tablet recognition methods based on Air Coupling ultrasound - Google Patents
A kind of an inscription on a tablet recognition methods based on Air Coupling ultrasound Download PDFInfo
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- CN108982669A CN108982669A CN201810920183.7A CN201810920183A CN108982669A CN 108982669 A CN108982669 A CN 108982669A CN 201810920183 A CN201810920183 A CN 201810920183A CN 108982669 A CN108982669 A CN 108982669A
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- Prior art keywords
- air coupling
- scanning
- high frequency
- inscription
- probe
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Classifications
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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
- G01N29/041—Analysing solids on the surface of the material, e.g. using Lamb, Rayleigh or shear waves
-
- 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
-
- 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
- G01N2291/0232—Glass, ceramics, concrete or stone
Abstract
The invention discloses a kind of an inscription on a tablet recognition methods based on Air Coupling ultrasound, it includes supersonic detector, high frequency air coupling probe, vertical type scanning support, two axis control platforms, host computer；The two axis control platforms are fixed on vertical type scanning support；Supersonic detector is mounted in two axis control platforms；High frequency air coupling probe is mounted on the front end of supersonic detector；High frequency air coupling probe and supersonic detector pass through WIFI module and host computer communication connection；The present invention uses Air Coupling ultrasonic scanning image system, Air Coupling formula ultrasonic non-destructive inspection techniques have non-contact, non-intruding, completely lossless, it can be realized and be quickly imaged in linear scan, it is imaged using Air Coupling Ultrasonic Pulse-Echo method combination C-scan, the small change in depth in scanning surface can be come out in imaging results saliency, to complete the scanning recognition to an inscription on a tablet.
Description
Technical field
The present invention relates to an inscription on a tablet identification technology fields, and in particular to a kind of an inscription on a tablet identification side based on Air Coupling ultrasound
Method.
Background technique
An inscription on a tablet stone inscription in itself, has very high cultureal value, historical value and artistic value；In another party
Face, it also has immeasurable learning value, is the precious firsthand information for studying China's history and culture, for ancient culture
It studies and passes on and is significant.Word content is stone inscription " soul ", if text is vanished from sight, stone inscription has also been reformed into commonly
Rock, lose its original value.Since quite a few stone inscription belongs to Immovable Cultural Relics, it is difficult to carry out comprehensive
Protection, experience many years weathering after, many stone inscription contents are fading away, therefore the protection for stone inscription content
It is very urgent.So stone inscription content is handled and protected using modern host computer technology, it can permanently spread and just have
There is important meaning.An inscription on a tablet is divided into the characters cut in relief of text protrusion background and text is depressed in the characters cut in intaglio of background, due to ancient Chinese upright stone tablet
Carving most of is characters cut in intaglio, studies the discussion that relevant issues are carried out just for characters cut in intaglio stone inscription herein.
Industry mainly takes artificial rubbing mode to obtain stone inscription rubbing at present, but since difficulty is arduous, workload is too big and
It is unsatisfactory, and due to manual rubbing produce rubbing have to a certain extent to the original looks and durability of stone inscription it is comparable
Damage.
Summary of the invention
In view of the defects and deficiencies of the prior art, the present invention intends to provide a kind of upright stone tablets based on Air Coupling ultrasound
Literary recognition methods.
To achieve the above object, the technical solution adopted by the present invention is that:
A kind of an inscription on a tablet recognition methods based on Air Coupling ultrasound, it is characterised in that: it is comprised the following steps:
One, using an inscription on a tablet identification device, which sweeps comprising supersonic detector, high frequency air coupling probe, vertical type
Retouch frame, two axis control platforms, host computer；The two axis control platforms are fixed on vertical type scanning support；Supersonic detector
It is mounted in two axis control platforms；High frequency air coupling probe is mounted on the front end of supersonic detector；High frequency air coupling is visited
Head uses the ultrasonic probe of transceiver；High frequency air coupling probe pass through with supersonic detector WIFI module with it is upper
Machine communication connection；The description ultrasonic amplitude of the position signal and supersonic detector output of high frequency air coupling probe output
Signal is input in host computer after being digitized, and by moving the position of vertical type scanning support manually, adjusts high frequency air coupling
Close probe and by the spacing in the face of putting down；
Two, before starting scanning, tranmitting frequency, the focal length of ultrasonic probe, certain area are carried out by upper computer software
Scanning area and each stepping of ultrasonic probe displacement parameter setting；High frequency air coupling probe is allowed to rest on stone inscription first
The position that surface does not have text to be recessed；
Three, high frequency air coupling probe is driven to do orthogonal two freedom degree sides along guide rail by two axis control platforms
To automatically scanning；Need to guarantee that the spacing on high frequency air coupling probe and scanning area surface is relatively fixed in scanning process；
When automatically scanning, high frequency air coupling probe is scanned whole region according to zigzag track within the scope of scanning area,
Each scanning probe can carry out the operation that transmitting receives ultrasonic wave, and since the concave-convex degree on surface is different, echo-signal is first
It would also vary from when the sound that wave reaches；The position signal of high frequency air coupling probe output and retouching for supersonic detector output
State ultrasonic amplitude signal be digitized after be input in host computer, then host computer by scan pattern generate a determination
The data array of size is graphically displayed in this regional scope；Each point in data array is shown as one over the display
A pixel；Image shows that these colors namely specify the amplitude of waveform with multiple color；In the end of scan each time, on
Position machine can be automatically performed the pixel counting to the percentage area of each color and display by software；It is swept to what is shown
Tracing evaluates result as that can make corresponding explanation, and acquisition, processing, storage and the evaluation of detection data are all
It is while scanning each time by the online real-time perfoming of host computer；
Four, it after the completion of a scanning area, can be carried out down by the mobile supersonic detector of guide rail to suitable position
The scanning in one region.
Further, the two axis control platforms include X-axis kinematic system, Z axis kinematic system；X-axis kinematic system packet
Containing main boom and X-axis driving motor, main boom is connect by guide rail one with vertical type scanning support；X-axis driving motor is fixed on directly
On vertical scanning support；Z axis kinematic system includes vertical frame, sliding block and Z axis driving motor；Vertical frame is fixed in main boom；It is sliding
Block is connect by sliding rail two with vertical frame；Z axis driving motor is fixed on vertical frame.
Further, the bottom of vertical type scanning support is equipped with universal wheel.
Further, host computer is equipped with display.
Further, NAUT21 Air Coupling ultrasonic testing system is installed in supersonic detector.
Testing principle of the invention are as follows: since the text on stone inscription has certain recess relative to stone inscription surface, benefit
When being scanned above text with supersonic reflection method, these recess can bring the variation of ultrasonic wave sound path, be reflected in time domain
In echo-signal, the envelope for reflecting Mintrop wave has small time shift backward.Suitable envelope range value is selected to carry out C-scan imaging, just
It can come out by the small change in depth in scanning surface and in imaging results saliency and the text on detection surface is imaged
Identification.
After adopting the above scheme, the invention has the following beneficial effects: an inscription on a tablet of the present invention based on Air Coupling ultrasound is known
Other device, using Air Coupling ultrasonic scanning image system, Air Coupling formula ultrasonic non-destructive inspection techniques have non-contact, non-invade
Enter, be completely lossless, can be realized quickly linear scan be imaged, using Air Coupling Ultrasonic Pulse-Echo method combination C-scan at
Picture can come out the small change in depth in scanning surface in imaging results saliency, to complete the scanning recognition to an inscription on a tablet.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of an inscription on a tablet identification device based on Air Coupling ultrasound.
Description of symbols:
1, vertical type scanning support；2, high frequency air coupling probe；3, supersonic detector；4, two axis control platform.
Specific embodiment
With reference to the accompanying drawing, the present invention is further illustrated.
Embodiment: an inscription on a tablet identification device based on Air Coupling ultrasound, referring to shown in Fig. 1, it includes supersonic detector
3, high frequency air coupling probe 2, vertical type scanning support 1, two axis control platforms 4, host computer；Due to current most of stone tablet
Nature is mostly upright, i.e., high frequency air is convenient for using vertical type scanning support 1 perpendicular to the state of ground in carrying text surface
Coupling probe 2 facilitates scanning perpendicular to scanned plane；The two axis control platforms 4 are fixed on vertical type scanning support 1；
Supersonic detector 3 is mounted in two axis control platforms 4；Before high frequency air coupling probe 2 is mounted on supersonic detector 3
End；NAUT21 Air Coupling ultrasonic testing system is installed in supersonic detector；High frequency air coupling probe 2 uses 800K point
Focus the ultrasonic probe of transmitting-receiving transceiver；High frequency air coupling probe 2 and supersonic detector 3 by WIFI module with
Host computer communication connection；The description ultrasonic wave for position signal and the supersonic detector output 3 that high frequency air coupling probe 2 exports
The signal of amplitude is input in host computer after being digitized；Host computer is equipped with display；
The two axis control platforms 4 include X-axis kinematic system, Z axis kinematic system；X-axis kinematic system includes main boom
With X-axis driving motor, main boom is connect by guide rail one with vertical type scanning support；X-axis driving motor is fixed on vertical type scanning
On frame；Z axis kinematic system includes vertical frame, sliding block and Z axis driving motor；Vertical frame is fixed in main boom；Sliding block passes through cunning
Rail two is connect with vertical frame；Z axis driving motor is fixed on vertical frame；
The bottom of vertical type scanning support 1 is equipped with universal wheel, easy to remove.
An inscription on a tablet recognition methods based on Air Coupling ultrasound comprises the following steps:
One, by moving the position of vertical type scanning support 1 manually, high frequency air coupling probe 2 is adjusted and by the face of putting down
Spacing；
Two, before starting scanning, tranmitting frequency, the focal length of ultrasonic probe, certain area are carried out by upper computer software
Scanning area and each stepping of ultrasonic probe displacement parameter setting；High frequency air coupling probe 2 is allowed to rest on upright stone tablet first
Carve the position that surface does not have text to be recessed；
At this time in the waveform of echo, abscissa is the time, and ordinate is amplitude, and first envelope of waveform is transmitted wave photograph
It is mapped to the back wave on detection surface, the portion waveshape in first envelope is chosen by gate in software, allows wave in gate
Shape at least will include 3-5 peak point, and the abscissa of the chosen position of gate remains unchanged；By calculating the equal of these peak points
It is worth the echo amplitude as this scanning element；In imaging software, it is assigned to using the amplitude size of the scanning element certain
Color, such different scanning point cooperate its location information different colours can be presented on a two-dimensional surface, this two dimension is flat
Face is the plane of scanning motion, and different colours are the far and near information for representing plane of scanning motion distance probe, and an inscription on a tablet is due to being depressed in scan table
Face, believing in conjunction and last C-scan imaging results in echo can all be distinguished with scanning of a surface；
Three, high frequency air coupling probe 2 is driven to be mutually perpendicular to along guide rail by X-axis driving motor and Z axis driving motor
Two freedom degree directions automatically scanning；It needs to guarantee high frequency air coupling probe 2 and scanning area surface in scanning process
Spacing it is relatively fixed；It is required to determine that scanning probe track is parallel with scanning area plane before each scanning starts
Degree；
When automatically scanning, high frequency air coupling probe 2 within the scope of scanning area according to zigzag track to whole region into
Row scanning can carry out the operation that transmitting receives ultrasonic wave in each scanning probe, since the concave-convex degree on surface is different, return
It would also vary from when the sound that wave signal Mintrop wave reaches；After the completion of a scanning area, the mobile ultrasonic wave of guide rail can be passed through
Defectoscope carries out the scanning in next region to suitable position.
An inscription on a tablet identification device and recognition methods based on Air Coupling ultrasound described in the present embodiment, have the advantage that
1, non-contact using empty coupling ultrasonic scanning, it is suitble to historical relic detection；
2, it is popped one's head in using high frequency sky coupling, the detection accuracy of highest 0.2mm can be provided, can not to some naked eyes
An inscription on a tablet of identification is scanned and is imaged；
3, imaging results are digital picture, and the later period can also further increase it using digital image-processing methods
Strong to wait processing, improve imaging results recognizes degree.
The above is only used to illustrate the technical scheme of the present invention and not to limit it, and those of ordinary skill in the art are to this hair
The other modifications or equivalent replacement that bright technical solution is made, as long as it does not depart from the spirit and scope of the technical scheme of the present invention,
It is intended to be within the scope of the claims of the invention.
Claims (5)
1. a kind of an inscription on a tablet recognition methods based on Air Coupling ultrasound, it is characterised in that: it is comprised the following steps:
One, using an inscription on a tablet identification device, the device include supersonic detector, high frequency air coupling probe, vertical type scanning support,
Two axis control platforms, host computer；The two axis control platforms are fixed on vertical type scanning support；Supersonic detector is mounted on
In two axis control platforms；High frequency air coupling probe is mounted on the front end of supersonic detector；High frequency air coupling probe uses
The ultrasonic probe of transceiver；High frequency air coupling probe and supersonic detector pass through WIFI module and host computer communicates
Connection；The signal warp of the description ultrasonic amplitude of the position signal and supersonic detector output of high frequency air coupling probe output
It is input in host computer after digitlization, by moving the position of vertical type scanning support manually, adjusts high frequency air coupling probe
With by the spacing in the face of putting down；
Two, before starting scanning, tranmitting frequency, the focal length of ultrasonic probe are carried out by upper computer software, certain area is swept
Retouch the parameter setting of the displacement of region and each stepping of ultrasonic probe；High frequency air coupling probe is allowed to rest on stone inscription surface first
The position for not having text to be recessed；
Three, high frequency air coupling probe is driven to do orthogonal two freedom degree directions along guide rail by two axis control platforms
Automatically scanning；Need to guarantee that the spacing on high frequency air coupling probe and scanning area surface is relatively fixed in scanning process；Automatically
When scanning, high frequency air coupling probe is scanned whole region according to zigzag track within the scope of scanning area, each
Scanning probe can all carry out the operation that transmitting receives ultrasonic wave, and since the concave-convex degree on surface is different, echo-signal Mintrop wave is arrived
It would also vary from when the sound reached；The position signal of high frequency air coupling probe output and the description of supersonic detector output are super
The signal of sonic wave amplitude is input in host computer after being digitized, and then host computer generates a determining size by scan pattern
Data array, be graphically displayed in this regional scope；Each point in data array be shown as over the display one as
Element；Image shows that these colors namely specify the amplitude of waveform with multiple color；In the end of scan each time, host computer
The pixel counting to the percentage area of each color and display can be automatically performed by software；To the scanning figure shown
As corresponding explanation can be made, and result is evaluated, acquisition, processing, storage and the evaluation of detection data be all
By the online real-time perfoming of host computer while scanning each time；
Four, it after the completion of a scanning area, can be carried out by the mobile supersonic detector of guide rail to suitable position next
The scanning in region.
2. a kind of an inscription on a tablet recognition methods based on Air Coupling ultrasound according to claim 1, it is characterised in that: described
Two axis control platforms include X-axis kinematic system, Z axis kinematic system；X-axis kinematic system includes main boom and X-axis driving motor, master
Cantilever crane is connect by guide rail one with vertical type scanning support；X-axis driving motor is fixed on vertical type scanning support；Z axis kinematic system
Include vertical frame, sliding block and Z axis driving motor；Vertical frame is fixed in main boom；Sliding block is connect by sliding rail two with vertical frame；
Z axis driving motor is fixed on vertical frame.
3. a kind of an inscription on a tablet recognition methods based on Air Coupling ultrasound according to claim 1, it is characterised in that: vertical type
The bottom of scanning support is equipped with universal wheel.
4. a kind of an inscription on a tablet recognition methods based on Air Coupling ultrasound according to claim 1, it is characterised in that: host computer
It is equipped with display.
5. a kind of an inscription on a tablet recognition methods based on Air Coupling ultrasound according to claim 1, it is characterised in that: ultrasonic wave
NAUT21 Air Coupling ultrasonic testing system is installed in defectoscope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810920183.7A CN108982669A (en) | 2018-08-02 | 2018-08-02 | A kind of an inscription on a tablet recognition methods based on Air Coupling ultrasound |
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| CN201810920183.7A CN108982669A (en) | 2018-08-02 | 2018-08-02 | A kind of an inscription on a tablet recognition methods based on Air Coupling ultrasound |
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| CN108982669A true CN108982669A (en) | 2018-12-11 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110807383A (en) * | 2019-10-24 | 2020-02-18 | 维沃移动通信有限公司 | Scanning method and electronic equipment |
| CN110807382A (en) * | 2019-10-24 | 2020-02-18 | 维沃移动通信有限公司 | Scanning method and electronic equipment |
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| CN110807383B (en) * | 2019-10-24 | 2023-10-17 | 维沃移动通信有限公司 | Scanning method and electronic equipment |
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Application publication date: 20181211 |