CN203021452U - Control system for drawing method capable of automatically controlling cut-off wavelength - Google Patents
Control system for drawing method capable of automatically controlling cut-off wavelength Download PDFInfo
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- CN203021452U CN203021452U CN 201320002330 CN201320002330U CN203021452U CN 203021452 U CN203021452 U CN 203021452U CN 201320002330 CN201320002330 CN 201320002330 CN 201320002330 U CN201320002330 U CN 201320002330U CN 203021452 U CN203021452 U CN 203021452U
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Abstract
The utility model relates to the technical field of optical fiber manufacture, in particular relates to a control system for a drawing method capable of automatically controlling cut-off wavelength and provides a novel drawing control system. The control system comprises an optical fiber preform, a drawing furnace, a tension test instrument, an optical fiber drawing machine, a drawing production line controller, a data transmission networking cable and an optical fiber test instrument. The optical fiber preform is installed on the upper part of the drawing furnace and inserted into the hot zone of the chamber of the drawing furnace while producing, the drawing furnace is installed on the upper part of the optical fiber drawing machine, the optical fiber test instrument is installed at one side of the optical fiber drawing machine, the optical fiber produced by the optical fiber drawing machine is measured at the optical fiber test instrument, the tension test instrument is installed on the optical fiber drawing machine under the drawing furnace, the optical fiber test instrument is connected with the drawing production line controller via the data transmission networking cable, the tension test instrument is connected with the drawing production line controller via a communication cable, and the drawing production line controller is connected with the drawing furnace via a control wire.
Description
Technical field
The utility model relates to the fiber manufacturing industry, be specifically related to a kind of cutoff wavelength Controlling System of the drawing process of control automatically, a kind of novel wire drawing Controlling System is provided.
Background technology
There is a certain wavelength usually in single-mode fiber, and when the optical wavelength of transmitting surpassed this wavelength, optical fiber can only be propagated a kind of light of pattern, and this wavelength is called cutoff wavelength.The cutoff wavelength size is determined by the structural parameter of prefabricated rods.In optical fiber production, cutoff wavelength is that parameter is controlled in a very important wire drawing.Traditional drawing process is controlled cutoff wavelength in drawing process by changing temperature, controls cutoff wavelength by the temperature of needs, and certain hysteresis quality is arranged.In drawing process, control the stable performance that can effectively control optical fiber of fiber cut off wavelength in certain scope, improve the transport property of optical fiber.
Summary of the invention
Goal of the invention is to provide a kind of cutoff wavelength automatically to control the Controlling System of drawing process for part in above-mentioned existence not, and the utility model is in order to provide a kind of novel wire drawing automatic control system.
The Controlling System that a kind of cutoff wavelength is controlled drawing process automatically is to take following technical scheme to realize:
The system processed that a kind of cutoff wavelength is controlled drawing process automatically comprises preform, fiber drawing furnace, tension test instrument, fiber-pulling machine, wire-drawing production line controller, data transmission netting twine and fiber optic test instrument.
preform is arranged on fiber drawing furnace top, during production, preform inserts in the furnace chamber hot-zone of fiber drawing furnace, fiber drawing furnace is arranged on the top of fiber-pulling machine, fiber optic test instrument is arranged on fiber-pulling machine one side, the optical fiber that fiber-pulling machine is produced is measured at the fiber optic test instrument place, the tension test instrument is arranged on the fiber-pulling machine of fiber drawing furnace bottom, the bottom of fiber drawing furnace, fiber optic test instrument is connected with the wire-drawing production line controller by the data transmission netting twine, the tension test instrument is connected with the wire-drawing production line controller by the special communication cable, the wire-drawing production line controller is connected with fiber drawing furnace by control line.
Described wire-drawing production line controller adopts programmable logic controller PLC, adopts fuzzy control theory to realize automatically controlling.
Described tension test instrument is a kind of non-contact precision detecting instrument, is the non-touch precision measurement instrument that French CE RSA company produces, and is arranged on the fiber-pulling machine of fiber drawing furnace bottom.
Described fiber optic test instrument is the product that U.S. PK company produces, and is a kind of optical fiber measurement instrument that can the detection fiber cutoff wavelength.
The drawing process that a kind of cutoff wavelength is controlled automatically is as follows:
preform is through the fiber drawing furnace heating, when suitable heating power, fiber-pulling machine carries out drawing optical fibers, the optical fiber that fiber-pulling machine is produced is measured at the fiber optic test instrument place, the fiber cut off wavelength that records is sent to the wire-drawing production line controller by the data transmission netting twine with data, the wire-drawing production line controller reads the cutoff wavelength that collects, the tension force of noncontact tension test instrument Real-time Measuring amount bare fibre, and by communication cable, tension signal is transferred to the wire-drawing production line controller, corresponding relation through cutoff wavelength and tension force, the cutoff wavelength numerical value that obtains is wanted in input, adopt fuzzy control theory to realize automatically controlling, regulate the heating power of fiber drawing furnace, control the bare fibre tension force in fiber draw process, bare fibre tension force is 140g ~ 160g, fiber cut off wavelength is controlled in 1250nm ~ 1280nm scope, reach stable cutoff wavelength, realize the purpose that cutoff wavelength is controlled.The heating power of described fiber drawing furnace is 42kw ~ 47kw.
The prefabricated rods of general diameter 150mm, heating power is between 42kw ~ 47kw.
The theoretical calculation formula of cutoff wavelength is as follows:
Wherein: α is optical fiber core diameter radius;
n
1Be the sandwich layer specific refractory power;
n
2Be cladding index;
Theoretical formula by cutoff wavelength can be learnt, λ
cBy α, n
1, n
2The common decision, usually, in drawing process, α, n
2Can not change, the size of the heating power by changing fiber drawing furnace can change n
1Size.In drawing process, use fuzzy control theory, by the heating power of bare fibre tension force indirectly control fiber drawing furnace, thereby change n
1The distribution of sandwich layer specific refractory power makes n
1 2-n
2 2Change within the specific limits, and then change fiber cut off wavelength, control it and stablize within the specific limits.
The utility model beneficial effect: it is simple in structure, reasonable in design that cutoff wavelength described in the utility model is controlled the Controlling System of drawing process automatically, reduces manual intervention and adjust tension force in drawing process, realizes automatically regulating; Reduced the hysteresis phenomenon of in the drawing process, cutoff wavelength being adjusted.Control cutoff wavelength in drawing optical fibers process implementation autostable, make equipment more intelligent.A kind of novel drawing process is provided, has widened the control mode of optical fiber production.
the utility model is by the cutoff wavelength of fiber optic test instrument measuring optical fiber, the cutoff wavelength numerical value that test obtains is loaded into the data gathering computer, by the data transmission netting twine, the data of cutoff wavelength are sent to corresponding wire-drawing production line controller, be arranged on the tension force of the noncontact tension test instrument Real-time Measuring amount bare fibre on the wire drawing pylon, by communication cable, tension signal is transferred to the wire-drawing production line controller, by the corresponding relation between cutoff wavelength and tension force, the cutoff wavelength numerical value that obtains is wanted in input, adopt fuzzy control theory automatically to control, drawing process is controlled, realize the stable of fiber cut off wavelength.
Description of drawings
The utility model is described in further detail below with reference to accompanying drawing:
Fig. 1 is the structural representation that a kind of cutoff wavelength described in the utility model is controlled the Controlling System of drawing process automatically.
Fig. 2 is the model that a kind of cutoff wavelength of the utility model is controlled Fuzzy control system automatically.
Embodiment
With reference to accompanying drawing 1,2, the Controlling System that a kind of cutoff wavelength is controlled drawing process automatically comprises preform (1), fiber drawing furnace (2), tension test instrument (3), fiber-pulling machine (4), wire-drawing production line controller (5), data transmission netting twine (6) and fiber optic test instrument (7).
preform (1) is arranged on fiber drawing furnace (2) top, preform during production (1) inserts in the furnace chamber hot-zone of fiber drawing furnace (2), fiber drawing furnace (2) is arranged on the top of fiber-pulling machine (4), fiber optic test instrument (7) is arranged on fiber-pulling machine (4) one sides, the optical fiber that fiber-pulling machine is produced is measured at the fiber optic test instrument place, tension test instrument (3) is arranged on the fiber-pulling machine (4) of fiber drawing furnace (2) bottom, fiber optic test instrument (7) is connected with wire-drawing production line controller (5) by data transmission netting twine (6), tension test instrument (3) is connected with wire-drawing production line controller (5) by communication cable, wire-drawing production line controller (5) is connected with fiber drawing furnace (2) by control line.
Described wire-drawing production line controller (5) adopts commercially available programmable logic controller PLC, adopts fuzzy control theory to realize automatically controlling.
Described tension test instrument (3) is a kind of non-contact precision detecting instrument, is the non-touch precision measurement instrument that French CE RSA company produces, and is arranged on the fiber-pulling machine (4) of fiber drawing furnace (2) bottom.
Described fiber optic test instrument (7) is the product of U.S. PK company, is a kind of optical fiber measurement instrument that can the detection fiber cutoff wavelength.
The drawing process that a kind of cutoff wavelength is controlled automatically is as follows:
preform (1) is through fiber drawing furnace (2) heating, when suitable heating power, fiber-pulling machine (4) carries out drawing optical fibers, the optical fiber that fiber-pulling machine is produced is located to measure at fiber optic test instrument (7), the fiber cut off wavelength that records is sent to wire-drawing production line controller (5) by data transmission netting twine (6) with data, wire-drawing production line controller (5) reads the cutoff wavelength that collects, noncontact tension test instrument (3) is measured the tension force of bare fibre in real time, and by communication cable, tension signal is transferred to wire-drawing production line controller (5), corresponding relation through cutoff wavelength and tension force, the cutoff wavelength numerical value that obtains is wanted in input, adopt fuzzy control theory to realize automatically controlling, regulate the heating power of fiber drawing furnace, control the bare fibre tension force in fiber draw process, bare fibre tension force is 140g ~ 160g, fiber cut off wavelength is controlled at 1250nm ~ 1280nm, reach stable cutoff wavelength, realize the purpose that cutoff wavelength is controlled.The heating power of described fiber drawing furnace is at 42kw ~ 47kw.
The prefabricated rods of general diameter 150mm, heating power is between 42kw ~ 47kw.
Automatically drawing process and the Controlling System controlled with reference to cutoff wavelength shown in accompanying drawing 1 mainly are comprised of preform (1), fiber drawing furnace (2), noncontact tension test instrument (3), fiber-pulling machine (4), wire-drawing production line controller (5), data transmission netting twine (6), fiber optic test instrument (7).the optical fiber that fiber-pulling machine (4) is produced is measured at testing instrument (7), the fiber cut off wavelength that records is sent to wire-drawing production line controller (5) by data transmission netting twine (6) with data, wire-drawing production line controller (5) reads the cutoff wavelength that collects, noncontact tension test instrument (3) is measured the tension force of bare fibre in real time, by communication cable, tension signal is transferred to wire-drawing production line controller (5), corresponding relation through cutoff wavelength and tension force, adopt fuzzy control theory to realize automatically controlling, regulate the heating power of fiber drawing furnace (2), control the bare fibre tension force in fiber draw process, reach and stablize the purpose that cutoff wavelength realizes that cutoff wavelength is controlled.
In Fig. 2, r is given cutoff wavelength, and y is the actual measurement cutoff wavelength of controlled plant, adopts two-dimensional fuzzy controller, is input as the variation ec=e of error e=r-y and error
k-e
k-1, output uc is the control signal of fiber drawing furnace.
Claims (2)
1. a cutoff wavelength is controlled the Controlling System of drawing process automatically, it is characterized in that: comprise preform, fiber drawing furnace, tension test instrument, fiber-pulling machine, wire-drawing production line controller, data transmission netting twine and fiber optic test instrument;
preform is arranged on fiber drawing furnace top, during production, preform inserts in the furnace chamber hot-zone of fiber drawing furnace, fiber drawing furnace is arranged on the top of fiber-pulling machine, fiber optic test instrument is arranged on fiber-pulling machine one side, the optical fiber that fiber-pulling machine is produced is measured at the fiber optic test instrument place, the tension test instrument is arranged on the fiber-pulling machine of fiber drawing furnace bottom, fiber optic test instrument is connected with the wire-drawing production line controller by the data transmission netting twine, the tension test instrument is connected with the wire-drawing production line controller by communication cable, the wire-drawing production line controller is connected with fiber drawing furnace by control line.
2. a kind of cutoff wavelength according to claim 1 is controlled the Controlling System of drawing process automatically, it is characterized in that: described wire-drawing production line controller adopts programmable logic controller, adopts fuzzy control theory to realize automatically controlling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320002330 CN203021452U (en) | 2013-01-05 | 2013-01-05 | Control system for drawing method capable of automatically controlling cut-off wavelength |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320002330 CN203021452U (en) | 2013-01-05 | 2013-01-05 | Control system for drawing method capable of automatically controlling cut-off wavelength |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203021452U true CN203021452U (en) | 2013-06-26 |
Family
ID=48645448
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320002330 Expired - Fee Related CN203021452U (en) | 2013-01-05 | 2013-01-05 | Control system for drawing method capable of automatically controlling cut-off wavelength |
Country Status (1)
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|---|---|
| CN (1) | CN203021452U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103030272A (en) * | 2013-01-05 | 2013-04-10 | 中天科技光纤有限公司 | Drawing method for automatically controlling cutoff wavelength and control system |
-
2013
- 2013-01-05 CN CN 201320002330 patent/CN203021452U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103030272A (en) * | 2013-01-05 | 2013-04-10 | 中天科技光纤有限公司 | Drawing method for automatically controlling cutoff wavelength and control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHONGTIAN SCIENCE AND TECHNOLOGY CO LTD, JIANGSU J Effective date: 20150415 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150415 Address after: 226009 Nantong economic and Technological Development Zone, Jiangsu Zhongtian Road, No. 6 Patentee after: ZHONGTIAN TECHNOLOGY FIBER POTICS Co.,Ltd. Patentee after: JIANGSU ZHONGTIAN TECHNOLOGY Co.,Ltd. Patentee after: ZHONGTIAN TECHNOLOGY ADVANCED MATERIALS Co.,Ltd. Address before: 226009 Nantong economic and Technological Development Zone, Jiangsu Zhongtian Road, No. 6 Patentee before: ZHONGTIAN TECHNOLOGY FIBER POTICS Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130626 Termination date: 20220105 |