CN104198340B - Rock behavio(u)r parameter measurement system and its application method - Google Patents
Rock behavio(u)r parameter measurement system and its application method Download PDFInfo
- Publication number
- CN104198340B CN104198340B CN201410479761.XA CN201410479761A CN104198340B CN 104198340 B CN104198340 B CN 104198340B CN 201410479761 A CN201410479761 A CN 201410479761A CN 104198340 B CN104198340 B CN 104198340B
- Authority
- CN
- China
- Prior art keywords
- rock
- rock sample
- sample
- oscillograph
- waveform signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The invention provides a kind of rock behavio(u)r parameter measurement system and its application method, wherein, the system includes：Pulse laser emission device, rock sample to be measured is irradiated for sending laser；Oscillograph, it is connected by wire with the rock sample, electric signal produced by for receiving the rock sample under the irradiation for the laser that the pulse laser emission device is sent, and the electric signal is converted into waveform signal shown, wherein, the waveform signal is used for the characteristic parameters for analyzing the rock sample.The embodiment of the present invention operates fairly simple, and sensitivity is high, and the response time is fast, helps to realize the real-time detection of rock behavio(u)r.
Description
Technical field
The present invention relates to rock prospecting technique field, more particularly to a kind of rock behavio(u)r parameter measurement system and its user
Method.
Background technology
The characteristic of rock mainly includes：Structural plane anisotropy, density, porosity, skeleton structure and crack etc., tradition
Sign rock behavio(u)r method mainly reflected by measured resistivity, ripple ratio etc. the density of rock, anisotropic properties,
Microcrack degree etc., these traditional methods are complex.
The content of the invention
The embodiments of the invention provide a kind of rock behavio(u)r parameter measurement system and its application method, to reach simplified operation
Mode, reduces the purpose damaged rock sample, and the system includes：
Pulse laser emission device, rock sample to be measured is irradiated for sending laser；
Oscillograph, is connected by wire with the rock sample, for receiving the rock sample in the pulse laser
Electric signal produced by under the irradiation for the laser that transmitter is sent, and the electric signal is converted into waveform signal shown,
Wherein, the waveform signal is used for the characteristic parameters for analyzing the rock sample.
In one embodiment, said system also includes：Sample stage, for placing the rock sample, and for institute
The position for stating rock sample is adjusted.
In one embodiment, above-mentioned sample stage includes：Specimen holder, support and displacement platform, wherein, the support is located at institute
On rheme moving stage, the support is used to support the specimen holder, and the displacement platform is used to control the specimen holder drive described
Rock sample is rotated.
In one embodiment, said system also includes：Direct-flow voltage regulation source, one end passes through the wire and the rock-like
Condition connects, and the other end is connected by the wire with the oscillograph, for providing bias for the rock sample.
In one embodiment, the electrode that the wire is formed on the rock sample is interdigital electrode.
In one embodiment, said system also includes diaphragm, for swashing of adjusting that the pulse laser emission device sends
Swept area of the optical signal on the rock sample.
The embodiment of the present invention additionally provides a kind of application method of above-mentioned rock behavio(u)r parameter measurement system, this method bag
Include：
Rock sample to be measured is placed in the light path center of pulse laser emission device；
Open the pulse laser emission device and oscillograph；
Record the waveform signal shown on the oscillograph；
The position of the rock sample is adjusted, is recorded in diverse location, the waveform signal shown on the oscillograph；
It is located at the waveform signal of diverse location according to the rock sample of acquisition, analyzes the characteristic parameters of the rock sample.
In one embodiment, the characteristic parameters include at least one of：Resistivity, anisotropy, internal void
Degree, crack.
In one embodiment, before the waveform signal shown on recording oscillometer, methods described also includes：
Determine whether the response speed of the photosignal of the rock shown on the oscillograph meets pre-provisioning request；
If be unsatisfactory for, reduce the input impedance of the oscillograph.
In one embodiment, before the waveform signal shown on recording oscillometer, methods described also includes：
Determine whether the signal response sensitivity of the rock sample meets pre-provisioning request；
If be unsatisfactory for, the distance between two electrodes that the wire is formed on the rock sample is adjusted.
For the measurement of rock behavio(u)r parameter in the embodiment of the present invention, electric signal of the rock under laser irradiation is first obtained,
Then the analysis of every characteristic parameters of rock is carried out according to the electric signal, particularly by setting pulse laser emission device,
Send laser and be irradiated on rock sample and produce electric signal, and these electric signals are reflected by oscillograph, according to acquisition
These electric signals can just realize the analysis to rock behavio(u)r parameter, operate fairly simple.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, not
Constitute limitation of the invention.In the accompanying drawings：
Fig. 1 is the structural representation of the rock behavio(u)r parameter measurement system of the embodiment of the present invention；
Fig. 2 is the application method flow chart of the rock behavio(u)r parameter measurement system of the embodiment of the present invention；
Fig. 3 is the attachment structure schematic diagram of the rock behavio(u)r parameter measurement system of the embodiment of the present invention；
Fig. 4 is the conventional electrodes schematic diagram of the embodiment of the present invention；
Fig. 5 is the interdigital electrode schematic diagram of the embodiment of the present invention；
Fig. 6 is laser irradiates schematic diagram when inclination angle between the fracture surface of the embodiment of the present invention and horizontal plane is 0 °；
Fig. 7 is laser irradiates schematic diagram when inclination angle between the fracture surface of the embodiment of the present invention and horizontal plane is 45 °；
Fig. 8 is laser irradiates schematic diagram when inclination angle between the fracture surface of the embodiment of the present invention and horizontal plane is 90 °；
Fig. 9 is the relation schematic diagram of inclination angle between the fracture surface of the embodiment of the present invention and horizontal plane and photosignal；
Figure 10 is the relation schematic diagram that changes with fractuer direction of Rock resistivity of the embodiment of the present invention.
Embodiment
It is right with reference to embodiment and accompanying drawing for the object, technical solutions and advantages of the present invention are more clearly understood
The present invention is described in further details.Here, the exemplary embodiment of the present invention and its illustrating to be used to explain the present invention, but simultaneously
It is not as a limitation of the invention.
Inventor using pulse laser by detecting technique it is considered that can excite to obtain the optical telecommunications of rock
Number, by the analysis of the photosignal to rock, rock is obtained on resistivity, anisotropy, wood interior porosity, crack etc.
Change information, i.e. from optical angle, measured based on rock photoelectric characteristic.
Based on above-mentioned thought, in this example there is provided a kind of rock behavio(u)r parameter measurement system, the system is exactly to pass through light
Electric signal realizes that to rock behavio(u)r parameter measurement main feature is exactly：Detection method is simple, and measurement cost is low, to sample rock
Not damaged, the adverse circumstances such as suitable various HTHPs stronger to adaptive capacity to environment, while sensitivity is high, the response time is fast,
The response time of nanosecond helps to realize the real-time detection of rock, meanwhile, the photoelectric characteristic of rock can also effectively reflect rock
The inner structural features of stone.
The rock behavio(u)r parameter measurement system, as shown in figure 1, including：
Pulse laser emission device 101, rock sample 102 to be measured is irradiated for sending laser；
Oscillograph 103, is connected by wire 104 with rock sample 102, for receiving rock sample 102 in pulse laser
Electric signal produced by under the irradiation for the laser that transmitter 101 is sent, and the electric signal is converted into waveform signal shown
Show, wherein, the waveform signal is used for the characteristic parameters for determining the rock sample.
In the above-described embodiments, for the measurement of rock behavio(u)r parameter, electric signal of the rock under laser irradiation is first obtained,
Then the analysis of every characteristic parameters of rock is carried out according to the electric signal, particularly by setting pulse laser emission device,
Send laser and be irradiated on rock sample and produce electric signal, and these electric signals are reflected by oscillograph, according to acquisition
These electric signals can just realize the analysis to rock behavio(u)r parameter, operate fairly simple.
Further, it is contemplated that rock sample needs thing and is supported, while the supporter needs to support to rock
The movement of position either angle, to realize the measurement to the different angles of rock or orientation, can set a sample stage, use
In placement rock sample to be measured, and support to be adjusted the position of rock sample to be measured, the sample stage can be by specimen holder, branch
Frame and displacement platform etc. are constituted, wherein, specimen holder, for placing the rock sample to be measured, displacement platform passes through support and the sample
Product frame is connected, for controlling the specimen holder to drive the rock to be measured to rotate, wherein it is possible to using manual translation platform, also may be used
To use motorized precision translation stage.
In view of in practical operation, electric signal of the rock produced by under laser irradiation is very faint, in order that
Obvious signal can be produced, appropriate bias can be added, for example：Plus one 200 volts of bias.In this example, it is above-mentioned
Rock behavio(u)r parameter measurement system in can also include direct-flow voltage regulation source, one end of the direct-flow voltage regulation source by the wire with
The rock sample to be measured is connected, and the other end is connected by the wire with the oscillograph, for for the rock-like to be measured
Product provide bias.
, can be with external corresponding computer software, either in order to realize to the more efficiently record of data and analyzing and processing
Increase a processor, to realize real-time record, contrast and the preservation of data, for example, being set in above-mentioned measuring system at one
Device is managed, the processor is connected with oscillograph, for recording and analyzing the waveform signal on oscillograph.
Need to measure the different kinds of parameters of rock light position and plane of illumination, it is necessary to different in view of the system
Product, in order to reach these purposes, diaphragm can be set within the system, for swashing of adjusting that the pulse laser emission device sends
The swept area of optical signal, so-called diaphragm can be understood as a barrier with holes, for adjusting light position and illuminating area
Device.
In this example, a kind of application method of rock behavio(u)r parameter measurement system is additionally provided, as shown in Fig. 2 including：
Step 201：Rock sample to be measured is placed in the light path center of pulse laser emission device；
Step 202：Open the pulse laser emission device and oscillograph；
Step 203：The waveform signal shown on recording oscillometer；
Step 204：The position of the rock sample is adjusted, is recorded in diverse location, the ripple shown on the oscillograph
Shape signal；
Step 205：It is located at the waveform signal of diverse location according to the rock sample of acquisition, analyzes the ginseng of the rock sample
Amount.
Specifically, the characteristic parameters of rock can include：Resistivity, anisotropy, wood interior porosity, crack etc., but
It is worth noting that, these rock parameters are only schematic descriptions, the other parameters of rock are can also be, are not arranged one by one herein
Lift, but should all be included in the protection domain of the application.
When it is implemented, the RC vibrations of circuit can be reduced by reducing the input impedance of oscillograph, so as to improve sample
The photoelectric response speed of product.For example：Before the signal shown on recording oscillometer, in addition to：Determine to show on the oscillograph
Whether the response speed of the photosignal of the demonstration sample shown meets pre-provisioning request；If be unsatisfactory for, reduce the oscillograph
Input impedance.
The sensitivity of photoelectric respone is also a critically important factor when measuring, in order to improve the spirit of photoelectric respone
Sensitivity, the mode such as electrode spacing, the complexion of electrode that can be by changing sample, input that can also be by adjusting oscillograph hinders
The mode such as anti-, for example：When the pulse laser emission device and oscillograph is opened so that wire is on the rock sample
The electrode of formation is interdigital electrode.When it is implemented, before the waveform signal shown on recording oscillometer, can also first determine
Whether the signal response sensitivity of rock sample meets pre-provisioning request；If be unsatisfactory for, the wire is adjusted in the rock
The distance between two electrodes formed on sample, i.e. signal response sensitivity is adjusted by way of adjusting electrode spacing.
The parameter measurement system of above-mentioned rock is illustrated with a specific embodiment below, but is worth noting
, the specific embodiment do not constitute inappropriate limitation of the present invention merely to the present invention is better described.
In this example, it is proposed that a kind of system and method that rock behavio(u)r parameter is measured by pulse laser, arteries and veins is utilized
The interaction of impulse light and rock, obtains the transient state photoelectric respone signal of rock, and then analyze rock interior architectural feature.Should
Apparatus structure is simple, easily operated, and quick, the high-sensitivity detection of rock can be achieved.
As shown in figure 3, the system includes：Pulse laser emission device, oscillograph, it is possible to achieve the sample of 3 D auto movement
Platform, the wire and electrode detected for photosignal.
The specifically used step of the system, including：
S1：Rock sample to be measured is fixed on sample stage, sample electrode is connected by sample stage with oscillograph.
S2：Open pulse laser emission device so that pulsed laser irradiation produces photoelectric effect on sample in rock,
Corresponding photosignal can be detected by the oscillograph being connected with sample, further, can be by adjusting sample stage
Position, changes the irradiation position of laser on sample rock, to obtain the optimal photosignal of sample rock, it may be necessary to use
The certain bias of digital sourcemeter offer or bias current, to obtain more obvious signal.
When specific implementation, the irradiated area of laser can be adjusted by increasing diaphragm, and then photosignal is entered
Row modulation, can realize real-time record, contrast and the preservation of data with external corresponding computer software.
Specifically, according to circuit and device is connected shown in Fig. 3, sample, will using shown conventional electrodes as shown in Figure 4
Sample is fixed on sample stage, and regulation sample stage position causes sample to be in light path center, then opens pulse laser and oscillography
Device, adjusts oscillograph, can show clearly electric signal, fine tuning sample position is observed and selects Optimal Signals, and record is simultaneously
Preserve the details of signal.Or, sample can also be using the interdigital electrode shown in Fig. 5.
The photosignal produced below with different fractuer directions after irradiated with pulse laser, and different fractuer directions institute are right
Exemplified by the resistance answered, the analysis that rock parameter is carried out with photosignal to be specifically described.
As shown in Fig. 6 to 8, the angle of expression crack aspect and horizontal plane is 0 °, 45 ° and 90 ° of schematic diagram respectively, its
In, arrow represents light irradiation direction, and the black line on both sides represents conducting resinl, and middle rule line represents crack.
Be as shown in Figure 9 with light irradiation direction it is different from fractuer direction angle obtained from different photosignal
Schematic diagram, i.e.,：Angle-photosignal graph of a relation, as seen from Figure 9：Obtained photosignal is irradiated along fractuer direction will
More than impinging upon the photosignal that occurs on fracture surface.
It is the resistance corresponding to the different fractuer directions of rock as shown in Figure 10, as seen from Figure 10：With fractuer direction
Change, Rock resistivity is also to occur what is changed.
Therefore, just fractuer direction, resistance and photosignal can be connected by above-mentioned Fig. 6 to Figure 10, according to foundation
The relation got up just can realize the measurement of the rock parameter based on laser pulse.
In this example, pulse laser probe sign is carried out to rock, sample electrode is connected by sample stage with oscillograph.Arteries and veins
Impulse light is irradiated on sample, and photoelectric effect is produced in rock, can be detected in the oscillograph being connected with sample corresponding
Photosignal, this characterizing method realizes fairly simple, synchronous signal sensitivity height stronger to adaptive capacity to environment, response speed
Degree is fast, and quick, the real-time detection to rock can be achieved.The pulse laser probe characterization result of rock and the internal structure of rock are believed
Breath is relevant, is to utilize light available for correlation properties such as anisotropy, porosity, crack, oil-containing water content in analysis reservoir rock
A kind of effective means that method is characterized to rock, analyzed.
In another embodiment, a kind of software is additionally provided, the software is used to perform above-described embodiment and preferred real
Apply the technical scheme described in mode.
In another embodiment, a kind of storage medium is additionally provided, be stored with above-mentioned software in the storage medium, should
Storage medium includes but is not limited to：CD, floppy disk, hard disk, scratch pad memory etc..
As can be seen from the above description, the embodiment of the present invention realizes following technique effect：For rock behavio(u)r ginseng
The measurement of amount, first obtains electric signal of the rock under laser irradiation, and the every characteristic for then carrying out rock according to the electric signal is joined
The analysis of amount, particularly by setting pulse laser emission device, sends laser and is irradiated on rock sample and produce electric signal, and
These electric signals are reflected by oscillograph, can just be realized to rock behavio(u)r parameter according to these electric signals of acquisition
Analysis, operates fairly simple.
Obviously, those skilled in the art should be understood that each module or each step of the above-mentioned embodiment of the present invention can be with
Realized with general computing device, they can be concentrated on single computing device, or be distributed in multiple computing devices
On the network constituted, alternatively, the program code that they can be can perform with computing device be realized, it is thus possible to by it
Store and performed in the storage device by computing device, and in some cases, can be to be held different from order herein
They, are either fabricated to each integrated circuit modules or will be multiple in them by the shown or described step of row respectively
Module or step are fabricated to single integrated circuit module to realize.So, the embodiment of the present invention is not restricted to any specific hard
Part and software are combined.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the embodiment of the present invention can have various modifications and variations.Within the spirit and principles of the invention, made
Any modification, equivalent substitution and improvements etc., should be included in the scope of the protection.
Claims (8)
1. a kind of rock behavio(u)r parameter measurement system, it is characterised in that including：
Pulse laser emission device, rock sample to be measured is irradiated for sending laser；
Oscillograph, is connected by wire with the rock sample, for receiving the rock sample in the pulse laser emission
Electric signal produced by under the irradiation for the laser that device is sent, and the electric signal is converted into waveform signal shown, wherein,
The waveform signal is used for the characteristic parameters for analyzing the rock sample；
Direct-flow voltage regulation source, one end is connected by the wire with the rock sample, and the other end is shown by the wire with described
Ripple device is connected, for providing bias for the rock sample, wherein, the bias that the direct-flow voltage regulation source is provided is 200 volts；
Wherein, the electrode that the wire is formed on the rock sample is interdigital electrode.
2. the system as claimed in claim 1, it is characterised in that also include：Sample stage, for placing the rock sample, and
It is adjusted for the position to the rock sample.
3. system as claimed in claim 2, it is characterised in that the sample stage includes：Specimen holder, support and displacement platform, its
In, the support is located on the displacement platform, and the support is used to support the specimen holder, and the displacement platform is used to control institute
Stating specimen holder drives the rock sample to rotate.
4. system as claimed any one in claims 1 to 3, it is characterised in that also including diaphragm, for adjusting the pulse
Swept area and irradiation position of the laser signal that generating laser is sent on the rock sample.
5. a kind of application method of the rock behavio(u)r parameter measurement system any one of Claims 1-4, its feature exists
In, including：
Rock sample to be measured is placed in the light path center of pulse laser emission device；
Open the pulse laser emission device and oscillograph；
Record the waveform signal shown on the oscillograph；
The position of the rock sample is adjusted, is recorded in diverse location, the waveform signal shown on the oscillograph；
It is located at the waveform signal of diverse location according to the rock sample of acquisition, analyzes the characteristic parameters of the rock sample.
6. method as claimed in claim 5, it is characterised in that the characteristic parameters include at least one of：It is resistivity, each
Anisotropy, wood interior porosity, crack.
7. method as claimed in claim 5, it is characterised in that described before the waveform signal shown on recording oscillometer
Method also includes：
Determine whether the response speed of the photosignal of the rock shown on the oscillograph meets pre-provisioning request；
If be unsatisfactory for, reduce the input impedance of the oscillograph.
8. method as claimed in claim 5, it is characterised in that described before the waveform signal shown on recording oscillometer
Method also includes：
Determine whether the signal response sensitivity of the rock sample meets pre-provisioning request；
If be unsatisfactory for, the distance between two electrodes that the wire is formed on the rock sample is adjusted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410479761.XA CN104198340B (en) | 2014-09-18 | 2014-09-18 | Rock behavio(u)r parameter measurement system and its application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410479761.XA CN104198340B (en) | 2014-09-18 | 2014-09-18 | Rock behavio(u)r parameter measurement system and its application method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104198340A CN104198340A (en) | 2014-12-10 |
| CN104198340B true CN104198340B (en) | 2017-08-04 |
Family
ID=52083665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410479761.XA Expired - Fee Related CN104198340B (en) | 2014-09-18 | 2014-09-18 | Rock behavio(u)r parameter measurement system and its application method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104198340B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1032372A1 (en) * | 1982-03-11 | 1983-07-30 | Предприятие П/Я М-5613 | Method of determination of material porosity by laser beam |
| CN101231241A (en) * | 2008-02-20 | 2008-07-30 | 中南民族大学 | Device and method for real time on-line detecting flue gas pollutant |
| CN101852712A (en) * | 2010-05-11 | 2010-10-06 | 北京交通大学 | Device and method for detecting optical detector working point of particle detector |
-
2014
- 2014-09-18 CN CN201410479761.XA patent/CN104198340B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1032372A1 (en) * | 1982-03-11 | 1983-07-30 | Предприятие П/Я М-5613 | Method of determination of material porosity by laser beam |
| CN101231241A (en) * | 2008-02-20 | 2008-07-30 | 中南民族大学 | Device and method for real time on-line detecting flue gas pollutant |
| CN101852712A (en) * | 2010-05-11 | 2010-10-06 | 北京交通大学 | Device and method for detecting optical detector working point of particle detector |
Non-Patent Citations (3)
| Title |
|---|
| Laser ultrasonics detection of an embedded crack in a composite spherical particle;Ahmed Amziane et al.;《Ultrasonics》;20110625;第52卷;第39-46页 * |
| 激光超声技术及其在无损检测中的应用;陈清明等;《激光与光电子学进展》;20050430;第42卷(第4期);第53-57页 * |
| 激光超声无损检测技术及其在岩体物性测试中的应用;尹向宝;《大学物理》;20080731;第27卷(第7期);第41-44页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104198340A (en) | 2014-12-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103123320B (en) | Laser-induced breakdown spectroscopy analysis method and implementation device based on single-light beam splitting | |
| BRPI0615006A2 (en) | method and apparatus for improving formation resistivity images obtained with galvanic well tools | |
| CN108680255A (en) | Window transient state absorption spectrometer when a kind of ultrahigh time resolution overlength | |
| CN103954593A (en) | Plasma signal acquisition device based on laser-induced-breakdown spectroscopy | |
| CN105891149B (en) | Fruit-vegetable quality analysis method and system based on frequency-domain near-infrared spectrum detection technique | |
| CN103135147A (en) | Method and device of identifying raindrop size spectrum | |
| CN106093596A (en) | The full measuring method of space charge of nanometer resolution can be realized | |
| CN103499392A (en) | TeraHertz-wave far-field detection super-diffraction resolution imaging instrument | |
| CN104034666A (en) | Graded and fast detection device and method for quality of foods and medicines | |
| Orlov et al. | Spectrally resolved analysis of fluorescence blinking of single dye molecules in polymers at low temperatures | |
| CN104198340B (en) | Rock behavio(u)r parameter measurement system and its application method | |
| CN102841102B (en) | Recognition method and device for micro-scale damage point in damage threshold measurement | |
| CN207675651U (en) | Portable underwater deposit, rock composition detection device based on LIBS technologies | |
| CN104749130B (en) | The fast scanning method of terahertz time-domain spectroscopy system | |
| CN104422715A (en) | Laser scanning thermal wave imaging method and apparatus based on subwindow technology | |
| BR102014019592A2 (en) | apparatus and method for imaging structural aspects below the surface of an object | |
| US20170211976A1 (en) | Variable modulation of radiation and components | |
| CN1829909A (en) | Optical waveform measurement device and measurement method thereof, complex refractive index measurement device and measurement method thereof, and computer program recording medium containing the pro | |
| CN108303396A (en) | Terahertz time-domain pulse signal acquisition methods, devices and systems | |
| CN204086154U (en) | The anisotropy measurement system of rock | |
| CN107131981A (en) | A kind of device for being used to study stress and Metal magnetic memory relation | |
| CN204086123U (en) | Rock anisotropy measurement mechanism | |
| CN104198493B (en) | Rock anisotropy measuring system and using method thereof | |
| CN105445190B (en) | Test bracket, scanner crossbeam and art work identification method | |
| CN103777240A (en) | Method for compensating fractional frequency scanning frequency band of controllable seismic origin |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170804 Termination date: 20200918 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |