CN201716139U - Subsize finefibre tension self-operated measuring unit - Google Patents
Subsize finefibre tension self-operated measuring unit Download PDFInfo
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- CN201716139U CN201716139U CN2010202488746U CN201020248874U CN201716139U CN 201716139 U CN201716139 U CN 201716139U CN 2010202488746 U CN2010202488746 U CN 2010202488746U CN 201020248874 U CN201020248874 U CN 201020248874U CN 201716139 U CN201716139 U CN 201716139U
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Abstract
The utility model relates to a subsize finefibre tension self-operated measuring unit which can realize automatic stretching and automatic detection of leather fiber, pulp fiber and other subsize finefibres, and has the advantages of convenient operation, accurate measurement and high visualization degree. The tensile stage composed by the method has small volume, and micromechanics measurement can be realized by means of an electron microscope or an optical microscope. The unit comprises a fibre tensile stage, the fibres to be measured are installed on the fibre tensile stage, the fibre tensile stage is provided with a measured fibre tension detection device which is connected with a computer, and the computer is connected with the power unit of the fibre tensile stage.
Description
Technical field
The utility model belongs to the fiber measurement field, relates in particular to the automatically measuring tension of small-sized fine fibers device that a kind of high precision easily realizes.
Background technology
The size of fiber tension can directly influence every physics, chemical property and the processing thereafter of fiber product.The size of the fiber in many fields is smaller usually, as the paper pulp fiber in light industry field, leather fiber etc., how accurately to control the stretching of these small-sized fine fibers and accurately measures its tension force, and being needs the problem constantly exploring and solve in the fiber measurement field.At home, the fiber tension measuring method mainly contains following several so at present: a kind of is to adopt portable digital measuring instrument to measure, and a kind of is manually to draw high measurement by drawing stand, and a kind of is to utilize computer system to measure.For preceding two kinds of measuring methods, because of the moving control of the main armrest of drawing process, when measuring the tension force of small-sized fine fibers operation very inconvenient, and its visual degree is also lower.And for the third measuring method, though can realize system controlled by computer stretches, the visual degree of measurement result is also than higher, but owing to the technology limitation that is subjected to be adopted, there are problems such as measuring accuracy is low, inconvenient operation in tonometry for small-sized fine fibers, and the drawing stand volume is bigger, is unfavorable for realizing the micro-vision Detection ﹠ Controling by electron microscope or optical microscope.
The utility model content
The purpose of this utility model is exactly in order to overcome the defective that existing fiber tension measuring method exists, the automatically measuring tension of small-sized fine fibers device that provides a kind of high precision easily to realize, it can realize drawing high automatically, detecting automatically of small-sized fine fibers such as leather fiber, paper pulp fiber, has easy and simple to handle, the high advantage of accurate, the visual degree of measurement, and the drawing stand volume that the method constitutes is little, can measure by the Micromechanics of electron microscope or optical microscope realization fiber.
For achieving the above object, the utility model adopts following technical scheme:
A kind of automatically measuring tension of small-sized fine fibers device, it comprises the tensile fiber platform, and tested fiber is installed on the tensile fiber platform, and the tensile fiber platform is provided with tested fiber tension pick-up unit, and this device is connected with computing machine; Simultaneous computer also is connected with the propulsion system of tensile fiber platform.
Described tensile fiber platform comprises clamper, and tested fiber is installed on the clamper, and clamper is installed on the specimen holder; Specimen holder is connected with micro-step motor by gearing, and micro-step motor is connected with computing machine by data collecting card by stepper motor driving circuit.
Described tension detecting apparatus comprises elastic body, and it is connected with tested fiber, also is provided with strain-ga(u)ge transducer on the elastic body simultaneously, and strain-ga(u)ge transducer also is connected with computing machine by data collecting card through signal amplification circuit.
A kind of measuring method that adopts the automatically measuring tension of small-sized fine fibers device, its step is:
(1) tested fiber two ends is fixed on the specimen holder with clamper respectively;
(2) output of the switching value of computer control data collecting card produces microsecond level pulse signal regularly, drives micro-step motor by driving circuit and rotates, and micro-step motor then stretches by actuator drives tensile fiber platform;
(3) tested fiber tensioning, its tension force acts on the elastic body that is stained with strain-ga(u)ge transducer, and elastic body is subjected to stress generation mechanical deformation, and the strain-ga(u)ge transducer resistance changes, the sensor output voltage signal;
(4) before being used for fiber measurement first, obtain the data sample of fiber tension and sensor output voltage by simulating the tensile fiber process, utilize curve fitting algorithm to determine the matched curve of fiber tension and sensor output voltage;
(5) voltage signal of strain-ga(u)ge transducer output is input to the analog input channel of data collecting card after amplifying, computing machine is gathered voltage data according to the sampling period of setting, and utilizes method of interpolation to determine fiber dynamic tension data according to tension force and voltage matched curve again;
(6) computer screen shows tension data in real time and draws its performance graph.
Tested fiber size scope is in the described step (1): length 1mm-10mm, diameter 0.1 μ m-100 μ m.
The pulse signal frequency scope is in the described step (2): 100Hz-10kHz.
In the described step (4), the simulation fiber draws high process, records at one group of set tension force
gEffect is the corresponding sensor output voltage down
u, set up one group of sample data:
, be that waypoint carries out sectional linear fitting with the sample data, obtain tension force--the matched curve of voltage.
In the described step (5), when detecting tension data, improve the accuracy that detects for eliminating to disturb, in each sampling period, detected voltage data is carried out digital filtering, promptly voltage signal is carried out m sampling, again m the sampled data that obtains arranged according to size order, give up head and the tail respectively
Individual bigger data and less data are carried out arithmetic mean to remaining data then and are obtained filtered voltage signal; After the filtering, according to tension force--the voltage matched curve utilizes method of interpolation to determine the fiber tension data.
The beneficial effects of the utility model are: the utility model is by the accurate control stretching fiber of software process, and detect in real time, the dynamic tension data of display fibers.Have simple to operate, the high advantage of accurate, the visual degree of measurement, be particularly suitable for the automatically measuring tension of small-sized fine fibers such as leather fiber, paper pulp fiber.And, according to the formation of this measuring method to draw high stage body long-pending less, be easy to be placed on electron microscope or the optical microscope, realize that the Micromechanics of fiber is measured.
Description of drawings
Fig. 1 constitutes synoptic diagram for measurement mechanism hardware;
Fig. 2 is for producing the software program flow chart of pulse signal;
Fig. 3 is the software program flow chart of high precision timing;
Fig. 4 is the strain bridge schematic diagram.
Wherein, 1 micro-step motor, 2 specimen holders, 3 clampers, 4 tested fibers, 5 elastic bodys, 6 strain-ga(u)ge transducers, 7 data collecting cards, 8 computing machines, 9 stepper motor driving circuits, 10 signal amplification circuits.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
Among Fig. 1, the automatically measuring tension of small-sized fine fibers device comprises the tensile fiber platform, and tested fiber 4 is installed on the tensile fiber platform, and the tensile fiber platform is provided with the tension detecting apparatus of tested fiber 4, and this device is connected with computing machine 8; Simultaneous computer 8 also is connected with the propulsion system of tensile fiber platform.
The tensile fiber platform comprises clamper 3, and tested fiber 4 is installed on the clamper 3, and clamper 3 is installed on the specimen holder 2; Specimen holder 2 is connected with micro-step motor 1 by gearing, and the stepper motor driving circuit 9 of micro-step motor 1 is connected with computing machine 8 by data collecting card 7.
Tension detecting apparatus comprises elastic body 5, and it is connected with tested fiber 4, also is provided with strain-ga(u)ge transducer 6 on the elastic body 5 simultaneously, and strain-ga(u)ge transducer 6 is connected with computing machine 8 by data collecting card 7 by signal amplification circuit 10.
Measuring method of the present utility model is:
(1) as shown in Figure 1, tested fiber 4 two ends are fixed on the specimen holder 2 with clamper 3 respectively;
(2) at first judge whether to produce pulse signal by computing machine, if, then fixed time interval is set according to draw speed or pulsed frequency, utilize the computer realization high precision timing again, when fixed time interval arrives, then the switching value of data collecting card 7 is exported the Dout0 negate.Like this, Dout0 will alternately export high level and low level according to certain time interval, form pulse signal.Fig. 2 is the program flow diagram that produces the feeding pulse signal, and wherein the program flow diagram of high precision timing as shown in Figure 3.Pulse signal is input to stepper motor driving circuit 9, after micro-step motor 1 rotates, is slowed down and rotation is converted to translation by mechanical transmission mechanism, the traction specimen holder 2 motions tested fiber 4 that stretches;
(3) tension force of tested fiber 4 acts on the elastic body 5, and the resistance strain gage sensor 6 on the elastic body 5 constitutes strain bridge, is used for the tension force of tested fiber 4 is converted to voltage signal.The strain bridge schematic diagram as shown in Figure 4, wherein, R
1~ R
4Be foil gauge resistance, U is an input reference voltage, and output voltage is
When tested fiber 4 relaxed, tension force was zero, bridge balance,
When tested fiber 4 tensionings, tension force is non-vanishing, and elastic body 5 is subjected to stress generation mechanical deformation, and deformation also takes place resistance strain gage thereupon, and its resistance changes and causes strain bridge imbalance, output voltage
, its value changes with tested fiber 4 tension force sizes;
When (4) system is used for tested fiber 4 tonometries first, adopt curve fitting algorithm to determine the relation curve of tested fiber tension and sensor output voltage.Its process is: simulate tested fiber 4 and draw high process, record at one group of set tension force
gStrain-ga(u)ge transducer 6 output voltages that effect is corresponding down
u, set up one group of sample data:
, be that waypoint carries out sectional linear fitting with the sample data, obtain tension force--the matched curve of voltage;
(5) voltage signal of strain-ga(u)ge transducer 6 outputs is input to the analog input channel of data collecting card 7 after signal amplification circuit 10 amplifies, and computing machine 8 is gathered voltage data according to the sampling period of setting.Disturb the accuracy that improves detection for elimination,, detected voltage data is carried out digital filtering, promptly voltage signal is advanced m sampling, again m the sampled data that obtains arranged according to size order, give up head and the tail respectively in each sampling period
Individual bigger data and less data are carried out arithmetic mean to remaining data then and are obtained filtered voltage signal.After the filtering, according to tension force--the voltage matched curve utilizes method of interpolation to determine the fiber tension data;
(6) computer screen shows tension data in real time and draws its performance graph.
Claims (3)
1. an automatically measuring tension of small-sized fine fibers device is characterized in that, it comprises the tensile fiber platform, and tested fiber is installed on the tensile fiber platform, and the tensile fiber platform is provided with tested fiber tension pick-up unit, and this device is connected with computing machine; Simultaneous computer also is connected with the propulsion system of tensile fiber platform.
2. automatically measuring tension of small-sized fine fibers device as claimed in claim 1 is characterized in that, described tensile fiber platform comprises clamper, and tested fiber is installed on the clamper, and clamper is installed on the specimen holder; Specimen holder is connected with micro-step motor by gearing, and micro-step motor is connected with computing machine by data collecting card by stepper motor driving circuit.
3. automatically measuring tension of small-sized fine fibers device as claimed in claim 1, it is characterized in that, described tension detecting apparatus comprises elastic body, it is connected with tested fiber, also be provided with strain-ga(u)ge transducer on the elastic body simultaneously, strain-ga(u)ge transducer also is connected with computing machine by data collecting card by signal amplification circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202488746U CN201716139U (en) | 2010-07-06 | 2010-07-06 | Subsize finefibre tension self-operated measuring unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202488746U CN201716139U (en) | 2010-07-06 | 2010-07-06 | Subsize finefibre tension self-operated measuring unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201716139U true CN201716139U (en) | 2011-01-19 |
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ID=43462143
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202488746U Expired - Fee Related CN201716139U (en) | 2010-07-06 | 2010-07-06 | Subsize finefibre tension self-operated measuring unit |
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| Country | Link |
|---|---|
| CN (1) | CN201716139U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886960A (en) * | 2010-07-06 | 2010-11-17 | 山东轻工业学院 | Device and method for automatically measuring tension of small-sized fine fibers |
| CN103389245A (en) * | 2013-08-07 | 2013-11-13 | 浙江富邦集团有限公司 | Tension detection device of leather |
| CN106092202A (en) * | 2016-07-15 | 2016-11-09 | 大连理工大学 | The device that fiber cloth acoplanarity displacement loads on microscope carrier |
-
2010
- 2010-07-06 CN CN2010202488746U patent/CN201716139U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886960A (en) * | 2010-07-06 | 2010-11-17 | 山东轻工业学院 | Device and method for automatically measuring tension of small-sized fine fibers |
| CN103389245A (en) * | 2013-08-07 | 2013-11-13 | 浙江富邦集团有限公司 | Tension detection device of leather |
| CN103389245B (en) * | 2013-08-07 | 2015-09-02 | 浙江富邦集团有限公司 | A kind of tension detecting apparatus of leather |
| CN106092202A (en) * | 2016-07-15 | 2016-11-09 | 大连理工大学 | The device that fiber cloth acoplanarity displacement loads on microscope carrier |
| CN106092202B (en) * | 2016-07-15 | 2019-07-16 | 大连理工大学 | The device that fiber cloth acoplanarity displacement loads on microscope carrier |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110119 Termination date: 20120706 |