CN102359979A - Resistance chromatographic data acquisition sensor with built-in rotary electrodes - Google Patents
Resistance chromatographic data acquisition sensor with built-in rotary electrodes Download PDFInfo
- Publication number
- CN102359979A CN102359979A CN201110168841XA CN201110168841A CN102359979A CN 102359979 A CN102359979 A CN 102359979A CN 201110168841X A CN201110168841X A CN 201110168841XA CN 201110168841 A CN201110168841 A CN 201110168841A CN 102359979 A CN102359979 A CN 102359979A
- Authority
- CN
- China
- Prior art keywords
- electrode
- annulus
- electrodes
- middle level
- leading electrode
- 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.)
- Granted
Links
Images
Abstract
The invention relates to a resistance chromatographic data acquisition sensor with built-in rotary electrodes, which belongs to the technical field of resistance chromatographic technology. The sensor comprises an external supporting ring, a middle supporting ring and an internal supporting ring which are concentric, wherein, a plurality of external electrodes are distributed on the external supporting ring, a plurality of internal electrodes are distributed on the internal supporting ring, and a plurality of internal and external leading electrodes are distributed on the middle supporting ring; the amount of the internal leading electrodes, the external leading electrodes and detecting electrodes (i.e., the internal electrodes) is identical and is k times of the external electrodes; the internal leading electrodes and the external leading electrodes are connected by using a specific connection method; the middle supporting ring carries out stepping rotation under driving of a positional driving motor; measurement of all the measuring points at an internal layer is realized after the positional driving motor has undergone k times of stepping. The sensor provided in the invention overcomes the problem that conventional sensing systems are difficult to carry out spatial multi-point measuring, without changing conventional data acquisition software and hardware systems at present.
Description
Technical field
The invention belongs to resistance chromatography technical field, be specifically related to the Hardware Design of the multi-point data acquisition sensor of a kind of built-in three-decker, rotation electrode.
Background technology
The exciting electrode potential electrode of general traditional resistance chromatography data acquisition system (DAS) is all fixed, and therefore measurement and sampling location are also fixed.This just means no matter adopt how high SF, and collectable locus all must receive very big restriction, and acquisition independent measurement number also is very limited.This is because sensor and external data processing chip in the traditional resistor chromatographic data acquisition system are used the data line physical connection, so the position of sensing electrode must fix, thereby can't omnibearingly measure.The improvement project that had adopted on the engineering at present has two types: one type is to increase number of electrodes to obtain more measured value; Another kind of is to accelerate to adopt frequency to obtain more measured value.But preceding a kind of method must be revised the hardware and the corresponding software system of present circuit central layer significantly, and improvable space reaches capacity.Still there are a large amount of observations " dead angle " for same detected object in then a kind of method, and the time lag that the different frequency down-sampling certainly exists is difficult to confirm.This just hopes on the basis of keeping current data acquisition system core plate structure, at utmost enlarges independently to measure the also measurable range of expansion space greatly of number.Generally speaking, the existing data processing system SF can reach per second more than 500 secondary figure, can satisfy the requirement of real-time fully.So with this understanding, the structure that changes electrode sensor greatly increases independent measurement and counts up to possible entirely.
Summary of the invention
The objective of the invention is to overcome the above-mentioned deficiency of prior art; A kind of resistance chromatography data sampling sensor is provided; Need not to change under the situation of current traditional data collection software and hardware system; Solve the space multimetering problem that existing sensor-based system is difficult to realize, realize that existing resource not only fully but also economical utilization.For this reason, the present invention adopts following technical scheme:
A kind of resistance chromatography data sampling sensor of built-in rotation electrode; Comprise that concentric skin supports annulus, annulus is supported in the middle level and internal layer supports annulus; Described outer support annulus supports between the annulus with internal layer and is fixedly connected; Be placed with a plurality of outer electrodes described outer the support on the annulus; On described internal layer support annulus, be placed with a plurality of internal layer electrodes; The inside surface that supports annulus in the middle level and outside surface be placed with respectively a plurality of in leading electrode and a plurality of outer guiding electricity, leading electrode and each outer leading electrode are connected on the inside surface and outside surface of middle level support annulus in each, and can support on the normal direction of inside surface or outside surface of annulus mobile in the middle level; The number of interior leading electrode, outer leading electrode and exploring electrode all equates, and be the outer electrode number k doubly; The method of attachment of outer leading electrode and interior leading electrode is following: leading electrode in adjacent k; If leading electrode is connected with first outer leading electrode dislocation-free in first, the individual adjacent outer leading electrode of this k then, leading electrode begins in first; Adopt that dislocation-free is connected successively with between the outer leading electrode, an interior wrong connection, interior wrong two connections; Dislocation k-1 position connects in the leading electrode in k, and k the outer leading electrode that next group is adjacent repeats above-mentioned connected mode again; So circulation, until all interior leading electrodes with corresponding outside leading electrode link to each other; Draw a lead from each outer electrode, middle level support annulus receives the driving of position drive motor and rotates; After k the stepping of centrally-mounted driving experience on the throne, can realize measurement to all measurement points of internal layer.
As preferred implementation, the resistance chromatography data sampling sensor of described built-in rotation electrode is characterized in that, leading electrode is connected on the inside surface and outside surface of middle level support annulus with each outer leading electrode in each through spring; Described internal layer electrode, outer electrode, interior leading electrode and outer leading electrode evenly are arranged on the support annulus that belongs to separately; Described resistance chromatography data sampling sensor also comprises the clock switch that links to each other with the position drive motor, is used to guarantee that the every stepping of the motor time once is identical with the once sampling time.
Middle level of the present invention is supported annulus and can be fixed on the rotary seat, and described middle level is supported annulus and rotated by the driving of position drive motor through rotary seat.Also can adopt following manner to realize the stepping rotation of middle level electrode: to support between annulus and the outer support annulus being provided with at least one circle chute in the middle level; Support annulus and outer the support between the annulus also are provided with at least one circle chute in the middle level; In each chute, be provided with ball rack and ball, the middle level is supported annulus and skin and internal layer and is supported between the annulus to link to each other through ball and also can slide relatively.
Utilization of the present invention is fixed on outer leading electrode and the interior leading electrode on the intermediate supports ring, and the internal layer exploring electrode is linked to each other with outer data acquisition system (DAS) through the dislocation lead-in wire.To middle support ring repeatedly after the stepping, all internal layer electrodes all can be traveled through.The present invention is not changing on traditional electricity chromatographic data based measurement, only increases a rotation middle layer that utilizes the position drive motor drives, just can realize the multimetering of detected object, and greatly increase the independent measurement number.
Description of drawings
Fig. 1 is a middle level of the present invention built-in rotation electrode structural profile synoptic diagram.
Fig. 2 is the whole cross sectional representation of sensor shown in the present.
Fig. 3 is the axial section of respective sensor of the present invention.
Description of reference numerals is following:
Outer: support annulus-1,16 contact electrode-2 of the data line-0 between outer electrode (can be described as contact electrode) and the data processing chip, outer electrode;
Middle level: be positioned at the middle level and support the connecting line-5 between 16 * 3=48 leading electrode-3 of annulus outside surface, annulus outside surface 16 * 3=48 outer leading electrode-4, the inside and outside leading electrode; Ball and ball rack-10, position drive motor-11, positioning switch-12, and U-shaped chute-13, driving wheel-14;
Internal layer: the support annulus-9 of 48 internal layer electrodes (can be described as exploring electrode)-8 and internal layer electrode.
Embodiment
Below in conjunction with accompanying drawing 1, Fig. 2 and Fig. 3 the structure and the know-why of the embodiment of the invention are explained.
The structure of sensor of the present invention comprises three layers, and wherein, ectonexine is fixed together, and outer electrode group and internal layer electrode group mutual alignment do not change, and the middle layer is rotatable.The basic composition of each layer is following: the many data lines 0 that each outer electrode are connected to data processing chip; Layer structure comprises support annulus-1,16 contact electrode-2 of outer electrode, outer support annulus through insulation spacer and bolt 16 internal layer contact electrodes-2; The middle level structure comprises the middle level support annulus that medium carbon steel is made; Support leading electrode-3 in 16 * 3=48 of circle ring inner surface through insulation spacer and the middle level that is bolted to, through insulation spacer be bolted to the middle level and support 16 * 3=48 outer leading electrode-4, the middle level of annulus outside surface and support annulus surfaces externally and internally electrode and distribute connecting line-5, ball and ball rack-10, drive motor 11, clock switch-12, respectively be provided with twice U-shaped chute-13 between middle level support annulus and internal layer and the skin; The support annulus-9 that comprises 48 exploring electrodes-8 and internal layer electrode on the internal layer.
All the electricity chromatography data acquisition system (DAS) with traditional is the same in outer field arrangement of electrodes and with the data communication method of centre data process chip.The middle layer mainly comprises the intermediate supports annulus, interior leading electrode and outer leading electrode.Be arranged on each fixing spring in leading electrode bottom of intermediate supports annulus surfaces externally and internally; Allow each electrode to support the inside surface or the outside surface normal direction vertical moving of annulus along the middle level; Be that electrode is from keep same plane to exceeding 1cm with the surface fully; Under certain spring pressure, effectively contact the formation circuit loop with assurance ectonexine electrode with the outer guiding or the interior leading electrode in middle level, and offsetting the loose contact of repeatedly using the rear electrode surface abrasion to cause.The outer employed electrode number of this instance is to design according to 16 the most frequently used in current traditional handicraft electrode systems.Require all differently towards concrete detected object pipeline radius and time and spatial resolution, reasonably select the number and the size of sensor, can improve measuring accuracy scope and independent measurement number effectively.The xsect of all each electrodes of three layers all is circular; To help forming the path of data conduction through the middle level contact; The outer layer of metal screen layer of placing plays electrostatic screening and the effect of supporting each layer sensor, one-piece construction such as accompanying drawing 1, Fig. 2 and shown in Figure 3.
The middle level is the core place of whole invention and design.The number of electrodes of interior leading electrode and outer leading electrode respectively is three times of outer electrode number; Three every adjacent interior leading electrodes of inside surface; Use from being in three electrodes that electrode that same footpath makes progress begins that dislocation-free connect, an interior wrong connection is connected with interior wrong two successively, so be circulated to all electrodes on the annulus.Only need rotate the middle layer according to such connected mode, then skin records and detects all 48 different spatial positions of space.Be provided with up and down two-layer height and position corresponding " U " shape chute fully between intermediate supports ring and internal layer support ring and the outer support ring, be connected with ball rack in the chute of middle layer through ectonexine.The stepping electrode is fixed on the intermediate supports ring, and two driving wheels of position drive motor and the equal diameters of ball also account for two ball positions in the chute of bottom, connect electrical source of power after, drive middle layer electrode rotation.The middle level has two slideways up and down respectively inside and outside supporting annulus.The clock switch of configuration guarantees that motor every stepping time once is identical with the once sampling time, thereby data acquisition and stepping are accomplished synchronously.
Through a short time of rotation electrode stepping each time; Apply the controlled continuous-current excitation of value on a pair of adjacent electrode; After the electric current that this continuous-current excitation pulse is produced passes detected object arrival boundary survey electrode; Will change the power of current potential because the detected object different electrical conductivity distributes, therefore with respect to the even distribution barnyard that removes behind the detected object, this variation will measure out through the incremental mode of every pair of adjacent electrode.48 electrodes in middle level are divided into three groups according to two electrodes of each interval, encourage successively and measure comprise in 16 electrodes one group in three groups to measuring each stepping, and all middle level potential electrode are used after three steppings; Clock switch is behind the signal that obtains the completion of extraneous data acquisition system (DAS) record; The control center roller carries out stepping next time; Form the measurement that next organizes potential electrode through middle with the exocuticle line; Electrode all internal layer potential electrode after three rotation steppings in middle level are traveled through, thereby obtain the measured value of all locus.Each stepping period is not more than 0.005 second, the setting of stepping rate by the detected object flow velocity with desire to obtain the independent measurement number and confirm.The position drive motor is that common medium-carbon steel is done axis 1000 circles three layer line groups.When slow running, motor is in the speed regulation by constant torque workspace, and motor is in more satisfactory control running status, and the big signal to noise ratio (S/N ratio) index of electrode measurement discrimination is high.In the high-speed cruising district, when speed needs significantly adjustment operation, because the touch voltage of electrode makes the little signal to noise ratio (S/N ratio) index of electrode measurement discrimination low high.Only need under specific speed, to apply a current impulse that amplitude is controlled in order to overcome this problem, just can suppress touch voltage effectively and improve signal to noise ratio (S/N ratio) through external power supply.The metallic spacer layer of internal layer has guaranteed that motor electromagnetic field, middle level can not influence the detected object electric potential field and distribute; And external metal screen layer is that electric potential field plays the effect of electrostatic screening to external world.
The data processing server of present embodiment adopts adjacent excitation of 16 electrodes and measurement pattern.Be spaced apart 2 electrode for first group 16 of internal layers, when the 1-2 electrode is used for current excitation, then 3-4 number, 5-6 number ..., the 15-16 electrode pair is used to measure potential change; Repeat this process and use respectively 3-4 number, 3-4 number, 5-6 number ..., the 15-16 electrode excitation finally obtains 16 measuring voltages; Then a stepping is done in the middle level, is spaced apart 2 electrode corresponding to second group 16 of internal layers, obtains 16 measuring voltages equally; The middle level stepping that tries again is spaced apart 2 electrode corresponding to second group 16 of internal layers, obtains 16 measuring voltages once more.The all electrodes of internal layer are traveled through after three steppings, obtain the check and analysis that 3 * 16=48 measuring voltage is used for same detected object altogether, like parameter analysis and image reconstruction etc.
Except the internal layer rotation electrode is different with traditional fixed electorde, obtain communication and the analysis and the traditional sensors of voltage measuring value for stepping each time, and outer field structure all is identical, concrete making and design are also identical.The end cap of motor simultaneously, support, cooling fan, fan housing, stator core, the coiling of pole rotor winding, insulation, rule, dipping lacquer, dry, be pressed into manufacture craft such as support and traditional motor just the same.The middle level uses carbon steel to make, and the middle level surfaces externally and internally all has the column vertical channel, and the hollow spring is settled in the bottom; Data line links to each other with interior crust electrode through the spring middle part; Stepping sensor and clock switch are solidified togather, and whenever receive a data acquisition, and then electrode drives the driving wheel rotation; Thereby drive internal layer and rotate (stepping) once, they place a chute interior " U " that supports the middle level electrode together.Internal layer normally is fixed on tube wall, and chute also is to be fixed on the inner layer outer surface, and chute is embedded in motor circuit.Skin also is fixed on the chute skin, keeps can contacting the position that forms current return with the middle level respective electrode.After making sensor skin, middle level and internal layer and each parts according to designing requirement, promptly can be assembled into the resistance chromatography multi-point data acquisition sensor of described built-in rotation electrode.
What be worth explanation is to make the mode of middle layer stepping rotation a lot.Present embodiment is utilized in offers two-layer corresponding chute up and down between each support ring, the mode of ball is installed in chute, realizes the stepping rotation in motor-driven middle layer; Also can the intermediate supports ring be fixed on the rotary seat, realize the stepping rotation in middle layer by the motor-driven rotary seat.
Present embodiment setting internal layer electrode number is 3 times of outer electrode.Usually, along with Two dimensional Distribution zone, thing field, measuring object place when littler or bigger, the internal layer electrode number is 2 times, 4 times or more times of outer electrode.Only need be in previous designs " ... three every adjacent electrodes of inside surface; use dislocation-free connection, an interior wrong connection to be connected from being in three electrodes that electrode that same footpath makes progress begins successively, so be circulated to all electrodes on the annulus with interior wrong two.... " Change into " ... every adjacent two (or 4 and more many) electrodes of inside surface; use dislocation-free connection (or interior wrong connection, interior wrong two connections, interior wrong three connections or the like) from being in two (or 4 and more many) electrodes that electrode that same footpath makes progress begins successively, so be circulated to all electrodes on the annulus.... " Only need rotate the middle layer according to such connected mode, then outer recording detected the electrode that all different spatial positions of space are arranged.
Claims (6)
1. the resistance chromatography data sampling sensor of a built-in rotation electrode; Comprise that concentric skin supports annulus, annulus is supported in the middle level and internal layer supports annulus; Described outer support annulus supports between the annulus with internal layer and is fixedly connected; Be placed with a plurality of outer electrodes described outer the support on the annulus; On described internal layer support annulus, be placed with a plurality of internal layer electrodes; The inside surface that supports annulus in the middle level and outside surface be placed with respectively a plurality of in leading electrode and a plurality of outer guiding electricity, leading electrode and each outer leading electrode are connected on the inside surface and outside surface of middle level support annulus in each, and can support on the normal direction of inside surface or outside surface of annulus mobile in the middle level; The number of interior leading electrode, outer leading electrode and exploring electrode all equates, and be the outer electrode number k doubly; The method of attachment of outer leading electrode and interior leading electrode is following: leading electrode in adjacent k; If leading electrode is connected with first outer leading electrode dislocation-free in first, the individual adjacent outer leading electrode of this k then, leading electrode begins in first; Adopt that dislocation-free is connected successively with between the outer leading electrode, an interior wrong connection, interior wrong two connections; Dislocation k-1 position connects in the leading electrode in k, and k the outer leading electrode that next group is adjacent repeats above-mentioned connected mode again; So circulation, until all interior leading electrodes with corresponding outside leading electrode link to each other; Draw a lead from each outer electrode, middle level support annulus receives the driving of position drive motor and rotates; After k the stepping of centrally-mounted driving experience on the throne, can realize measurement to all measurement points of internal layer.
2. the resistance chromatography data sampling sensor of built-in rotation electrode according to claim 1 is characterized in that, leading electrode is connected on the inside surface and outside surface of middle level support annulus through spring with each outer leading electrode in each.
3. the resistance chromatography data sampling sensor of built-in rotation electrode according to claim 1 is characterized in that, described internal layer electrode, outer electrode, interior leading electrode and outer leading electrode evenly are arranged on the support annulus that belongs to separately.
4. the resistance chromatography data sampling sensor of built-in rotation electrode according to claim 1; It is characterized in that; Described middle level is supported annulus and is fixed on the rotary seat, and described middle level is supported annulus and rotated by the driving of position drive motor through rotary seat.
5. the resistance chromatography data sampling sensor of built-in rotation electrode according to claim 1; It is characterized in that; Support annulus and outer the support between the annulus are provided with at least one circle chute in the middle level; Support annulus in the middle level and also be provided with at least one circle chute with outer the support between the annulus, in each chute, be provided with ball rack and ball, the middle level is supported annulus and skin and internal layer and is supported between the annulus to link to each other through ball and also can slide relatively.
6. the resistance chromatography data sampling sensor of built-in rotation electrode according to claim 1; It is characterized in that; Described resistance chromatography data sampling sensor also comprises the clock switch that links to each other with the position drive motor, is used to guarantee that the every stepping of the motor time once is identical with the once sampling time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110168841 CN102359979B (en) | 2011-06-22 | 2011-06-22 | Resistance chromatographic data acquisition sensor with built-in rotary electrodes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110168841 CN102359979B (en) | 2011-06-22 | 2011-06-22 | Resistance chromatographic data acquisition sensor with built-in rotary electrodes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102359979A true CN102359979A (en) | 2012-02-22 |
| CN102359979B CN102359979B (en) | 2013-01-23 |
Family
ID=45585340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110168841 Expired - Fee Related CN102359979B (en) | 2011-06-22 | 2011-06-22 | Resistance chromatographic data acquisition sensor with built-in rotary electrodes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102359979B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103989475A (en) * | 2014-05-09 | 2014-08-20 | 思澜科技（成都）有限公司 | Electrode fixing device for electrical impedance tomography |
| CN104422721A (en) * | 2013-09-06 | 2015-03-18 | 波音公司 | Device and method for determining fluid streaming potential |
| CN106908490A (en) * | 2017-02-24 | 2017-06-30 | 天津大学 | A kind of tomography sensor of variable capacitance |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997015825A1 (en) * | 1995-10-27 | 1997-05-01 | Disperse Technologies Limited | Characterisation of flowing dispersions |
| US5661406A (en) * | 1995-09-27 | 1997-08-26 | Leak Location Services, Inc. | Methods for detecting and locating leaks in containment facilities using electrical potential data and electrical resistance tomographic imaging techniques |
| CN1854726A (en) * | 2004-06-29 | 2006-11-01 | 西安交通大学 | Two-phase fluid grid and capacitor chromatography imaging method |
-
2011
- 2011-06-22 CN CN 201110168841 patent/CN102359979B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5661406A (en) * | 1995-09-27 | 1997-08-26 | Leak Location Services, Inc. | Methods for detecting and locating leaks in containment facilities using electrical potential data and electrical resistance tomographic imaging techniques |
| WO1997015825A1 (en) * | 1995-10-27 | 1997-05-01 | Disperse Technologies Limited | Characterisation of flowing dispersions |
| CN1854726A (en) * | 2004-06-29 | 2006-11-01 | 西安交通大学 | Two-phase fluid grid and capacitor chromatography imaging method |
Non-Patent Citations (3)
| Title |
|---|
| CHENG-NING HUANG,ET AL.: "Rotational electrical impedance tomography", 《MEASUREMENT SCIENCE AND TECHNOLOGY》 * |
| 崔自强 等: "双截面电阻层析成像系统设计", 《天津大学学报》 * |
| 许燕斌 等: "水平管气水两相流分相界面识别", 《天津大学学报》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104422721A (en) * | 2013-09-06 | 2015-03-18 | 波音公司 | Device and method for determining fluid streaming potential |
| CN104422721B (en) * | 2013-09-06 | 2019-01-22 | 波音公司 | Device and method for determining fluid streaming potential |
| CN103989475A (en) * | 2014-05-09 | 2014-08-20 | 思澜科技（成都）有限公司 | Electrode fixing device for electrical impedance tomography |
| CN103989475B (en) * | 2014-05-09 | 2019-01-22 | 思澜科技（成都）有限公司 | Electrode fixing device for electrical impedance tomography |
| CN106908490A (en) * | 2017-02-24 | 2017-06-30 | 天津大学 | A kind of tomography sensor of variable capacitance |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102359979B (en) | 2013-01-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102359979B (en) | Resistance chromatographic data acquisition sensor with built-in rotary electrodes | |
| CN208206051U (en) | Tube inner profile measurement device | |
| CN103822588B (en) | Based on noncontact formula form copying method cabin body section girth measuring apparatus and measuring method | |
| CN103308038B (en) | Laser receiving device and laser spot center identification method | |
| CN103915965B (en) | Motor | |
| CN102658504B (en) | Servo motor system and thickness measurement method based on same | |
| CN104565348A (en) | Component, system and method for calculating the axial position of the component and for calculating the rotational speed of the component | |
| CN102868279A (en) | Magnetic rotary encoder of low speed electromotor | |
| CN205482714U (en) | Poor measuring device of bearing mounting height and measurement system | |
| CN105093012A (en) | Lighting detection apparatus and lighting detection system | |
| CN103115233A (en) | Space scanning bracket with self-balancing function | |
| CN104567741A (en) | Novel angle displacement measuring device and measuring method thereof | |
| CN105342632A (en) | Device for adjusting diameter of detector ring of PET (positron emission tomography) system | |
| CN112229298A (en) | Self-propelled slewing bearing tooth jump detection device | |
| CN210014751U (en) | Measuring device for detecting rotation angle of shaft | |
| CN205141963U (en) | Differential positioning mechanism | |
| CN102755171B (en) | Closed-loop control structure and closed-loop control method for CT (computed tomography) rotating system | |
| CN208313232U (en) | A kind of Deformation inspection equipment | |
| CN203587045U (en) | Single-pair-pole external rotator angle position sensor | |
| CN106154059A (en) | A kind of Multi probe sphere near-field measurement system | |
| CN202866577U (en) | Revolving-door signal switching device | |
| CN204115891U (en) | A kind of automatic TME | |
| CN108895988A (en) | One kind being based on the closed angle displacement measurement system of alternation light field complete cycle | |
| CN103217116A (en) | Single-point ring-shaped measuring method for thickness of surface mounting technology (SMT) screen | |
| CN114473634A (en) | Precision detection method and device for numerical control tool rest |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130123 Termination date: 20210622 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |