CN107655970A - A kind of Khotan jade flaw detection system based on ultrasonic wave - Google Patents
A kind of Khotan jade flaw detection system based on ultrasonic wave Download PDFInfo
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- CN107655970A CN107655970A CN201610588484.5A CN201610588484A CN107655970A CN 107655970 A CN107655970 A CN 107655970A CN 201610588484 A CN201610588484 A CN 201610588484A CN 107655970 A CN107655970 A CN 107655970A
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- ultrasonic wave
- khotan jade
- flaw detection
- detection system
- jade
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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
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
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- Acoustics & Sound (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
For Khotan jade inside crackle that may be present, from practical application, invent a kind of Khotan jade flaw detection system based on ultrasonic wave, the system can easily detect to greatly facilitate the judgement to Khotan jade quality, the controller real-time data collection of the system, using software correction, closed-loop control with the presence or absence of crackle inside jade, precision is high, stability is strong, simple in construction, reliable operation.But because ultrasonic Detection Method is poor to axial crack resolving power, therefore need to select multiple test points in detection.
Description
Art
The present invention relates to a kind of detecting system, more particularly to a kind of Khotan jade flaw detection system based on ultrasonic wave.
Background technology
Khotan jade is a kind of nephrite.At least also there is the long history of more than 3000 years in China, be the part of the beautiful culture in China
Body matter, it is precious heritage and art rarity in Chinese national culture treasure-house.Chinese Khotan jade is with a long history, in making a name
Outside, a feast for the eyes Khotan jade fine work is the part of the magnificent culture of the Chinese nation.Khotan jade is the thing for having anima, it
Signify huge wealth.With the increasingly raising of living standards of the people, the high-grade jadeware that the nobility plays in the past is gradually gone away
Common people family.
Khotan jade especially seed material, because the natural environment at place is very complicated, there are crackle and indisposition unavoidably, it is just so-called
" ten seeds nine split ", some defect are difficult to avoid.The crackle of Khotan jade, especially potential crackle.If before processing not
It can in time find and effectively avoid.Easily cause the waste of precious jade material, or even the interests of infringement consumer.Therefore city
Field needs the equipment of Khotan jade crack detection, but Khotan jade crack detection equipment conventional in the market using ultraviolet method as
Main, without any safeguard measure, and its stability, reliability, security are all very poor.Merchandised in Khotan jade and its Related product
During with processing, the interests of flaw detection system consumer or processing business if none of dependable performance are easy to be damaged
Evil.Conventional method currently used for crizzle detection has：Ultrasonic method, eddy-current method.The general principle of ultrasonic method：Utilize ultrasound
The defects of property that ripple is propagated in media as well is to judge workpiece material and exception.Ultrasound detection is mainly being propagated using ultrasonic wave
During run into transmission caused by heterogeneous interface, reflection and refraction effect ultrasonic signal analyzed and handled, so as to carry
Take out the feature of defect.
The content of the invention
The purpose of the present invention is for crackle that may be present inside Khotan jade, devises a kind of based on ultrasonic wave and field
Beautiful flaw detection system.
The technical solution adopted for the present invention to solve the technical problems is：
By ultrasonic wave module, Keysheet module, CPU control modules, echo occur for the Khotan jade flaw detection system based on ultrasonic wave
Detection module, display module, power module etc. form.The characteristics of detecting system：Controller real-time data collection, using software
Correction, closed-loop control, precision is high, and stability is strong, simple in construction, reliable operation.But because ultrasonic Detection Method is to axial crack
Resolving power is poor, therefore needs to select multiple test points in detection.
Described radiating circuit is mainly made up of phase inverter 74LS04 and ultrasound transmitting transducer T.
It is described in the receiving circuit of ultrasonic wave, used the main devices such as DSP, CX20106A and transducer.
Described DSP uses TMS320F2812PGFA.
Described CX20106A is the special chip of infrared receiver, there is very high sensitivity and very strong antijamming capability,
And its sensitivity and jamproof ability are adjustable, and because its conventional carrier frequency is 38kHz, received with ultrasonic wave
The 38kHz of circuit input square wave is the same, therefore .CX20106A is used for the reception of ultrasonic wave in this design.
Described driving signal frequency should be consistent with transducer centre frequency, so as to improve the antijamming capability of system.
Described can use automatic growth control (AGC) in amplifying circuit by controller, carry out spontaneous emission arteries and veins to resist
The interference of punching.
The beneficial effects of the invention are as follows：
Khotan jade flaw detection system based on ultrasonic wave can easily detect to whether there is crackle, detection side in jade
Just, it is easy to carry about with one, the research and dealing to Khotan jade have reference role.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is the system construction drawing of detector.
Fig. 2 is ultrasonic wave transmitting circuit figure.
Fig. 3 is ultrasonic wave receiving circuit figure.
Embodiment
As shown in figure 1, by ultrasonic wave module, Keysheet module, CPU occur for the Khotan jade flaw detection system based on ultrasonic wave
Control module, echo detecting module, display module, power module etc. form.During work, the CPU module (dsp chip of detector
TMS320F2812PGFA a high-frequency impulse) is produced, this pulse frequency can be preset with keyboard, in LCDs
(LCD1602) shown on, tuning range is 3.5-5MHz；High-frequency impulse is transmitted to ultrasonic transducer T1 after treatment：It is super
Sound wave is penetrated in the Khotan jade that people is tested, and can produce echo, and echo-signal is received to ultrasonic wave receiving circuit through T2, and pass on a skill of craft to others CPU
(TMS320F2812PGFA), CPU analyzes and processes the echo-signal.Determine whether crackle if splitting to normal Bob
Line, CPU then send signal again, detect echo, after removing noise, are compared with existing data inside CPU pair, determine crackle position
Put and size, and result is shown on LCD1602.The characteristics of detecting system：Controller real-time data collection, using software
Correction, closed-loop control, precision is high, and stability is strong, simple in construction, reliable operation.But because ultrasonic Detection Method is to axial crack
Resolving power is poor, therefore needs to select multiple test points in detection.
As shown in Fig. 2 radiating circuit is mainly made up of phase inverter 74LS04 and ultrasound transmitting transducer T.VCC takes here
5V.Signal input part incoming frequency is 38kHz square wave.This square wave is sent to ultrasonic wave transmitting transducing through two-stage phase inverter all the way
One electrode of device, another way are sent to another electrode of transducer through one-level phase inverter, this two paths of signals in transducer two
Individual input section forms the form pushed off, and improves the emissive porwer of excusing from death ripple.Output end uses two phase inverter parallel connections, can be with
Improve driving force.High level VCC divide into two-way herein.It is every all to have met pull-up resistor R1 and R2 all the way.The two pull-up
Resistance can both increase the damping of transducer, shorten the time of free oscillation, can improve phase inverter output high level again
Ability, play a part of current limliting.
As shown in figure 3, in the receiving circuit of ultrasonic wave, the main devices such as DSP, CX20106A and transducer have been used.
The DSP selected herein is TMS320F2812PGFA.CX20106A is the special chip of infrared receiver, there is very high sensitivity
Very strong antijamming capability, and its sensitivity and jamproof ability are adjustable, and due to its conventional carrier frequency
It is 38 kHz, as the 38kHz of ultrasonic wave receiving circuit input square wave, therefore in this design, CX20106A be used to surpass
The reception of sound wave.Receive transducers are delivered to the ultrasonic signal received by pin 1 in the receiving circuit of the ultrasonic wave
CX20106A processing.Treated signal delivers to DSP through pin 7 and resistance 10kQ and is handled and calculated again.Pin 8
Connect 5V power supplys.Add 0.05F electric capacity between receive transducer two-way, effect is coupling and filtering.
The high directivity of ultrasonic transducer, high sensitivity, therefore transducer working characteristics can influence the steady of testing result
Qualitative and reliability, influence the signal to noise ratio of system.There is signal attenuation in ultrasonic wave, be received back to the signal come when being propagated in jade
Belong to small-signal, therefore require system rejection to disturbance ability to be eager to excel.Transducer is set to be operated in optimum state, its drive signal
Frequency should be consistent with transducer centre frequency.The interference of the system is also spontaneous in addition to the extraneous and noise of circuit in itself
Penetrate the interference of pulse.Therefore automatic growth control (AGC) can be used by controller in amplifying circuit.In actual applications,
In order to further reduce the interference of system, the methods of can taking isolated from power, shielded cable, improves the anti-interference of system.
Claims (7)
1. a kind of Khotan jade flaw detection system based on ultrasonic wave, module, Keysheet module, CPU are occurred by ultrasonic wave and control mould
Block, echo detecting module, display module, power module etc. form；The characteristics of detecting system：Controller real-time data collection,
Using software correction, closed-loop control, precision is high, and stability is strong, simple in construction, reliable operation；But due to ultrasonic Detection Method pair
Axial crack resolving power is poor, therefore needs to select multiple test points in detection.
2. the Khotan jade flaw detection system according to claim 1 based on ultrasonic wave, it is characterized in that described transmitting electricity
Road is mainly made up of phase inverter 74LS04 and ultrasound transmitting transducer.
3. the Khotan jade flaw detection system according to claim 1 based on ultrasonic wave, it is characterized in that described in ultrasound
In the receiving circuit of ripple, the main devices such as DSP, CX20106A and transducer have been used.
4. the Khotan jade flaw detection system according to claim 1 based on ultrasonic wave, it is characterized in that described DSP is used
TMS320F2812PGFA。
5. the Khotan jade flaw detection system according to claim 1 based on ultrasonic wave, it is characterized in that described
CX20106A is the special chip of infrared receiver, there is very high sensitivity and very strong antijamming capability, and its sensitivity and
Jamproof ability is adjustable, and because its conventional carrier frequency is 38kHz, with ultrasonic wave receiving circuit input square wave
38kHz is the same, therefore .CX20106A is used for the reception of ultrasonic wave in this design.
6. the Khotan jade flaw detection system according to claim 1 based on ultrasonic wave, it is characterized in that described driving letter
Number frequency should be consistent with transducer centre frequency, so as to improve the antijamming capability of system.
7. the Khotan jade flaw detection system according to claim 1 based on ultrasonic wave, it is characterized in that described amplifying
Automatic growth control (AGC) can be used by controller in circuit, to resist from exomonental interference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610588484.5A CN107655970A (en) | 2016-07-25 | 2016-07-25 | A kind of Khotan jade flaw detection system based on ultrasonic wave |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610588484.5A CN107655970A (en) | 2016-07-25 | 2016-07-25 | A kind of Khotan jade flaw detection system based on ultrasonic wave |
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| Publication Number | Publication Date |
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| CN107655970A true CN107655970A (en) | 2018-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610588484.5A Pending CN107655970A (en) | 2016-07-25 | 2016-07-25 | A kind of Khotan jade flaw detection system based on ultrasonic wave |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115112657A (en) * | 2022-05-25 | 2022-09-27 | 国家珠宝检测中心(广东)有限责任公司 | Jewelry terminal and jewelry maintenance scheme recommendation method thereof |
-
2016
- 2016-07-25 CN CN201610588484.5A patent/CN107655970A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115112657A (en) * | 2022-05-25 | 2022-09-27 | 国家珠宝检测中心(广东)有限责任公司 | Jewelry terminal and jewelry maintenance scheme recommendation method thereof |
| CN115112657B (en) * | 2022-05-25 | 2024-01-05 | 国家珠宝检测中心(广东)有限责任公司 | Jewelry terminal and jewelry maintenance scheme recommendation method thereof |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180202 |
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| WD01 | Invention patent application deemed withdrawn after publication |