CN1039653A - A kind of optical fiber branched type silk diameter measurer - Google Patents
A kind of optical fiber branched type silk diameter measurer Download PDFInfo
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- CN1039653A CN1039653A CN 89101577 CN89101577A CN1039653A CN 1039653 A CN1039653 A CN 1039653A CN 89101577 CN89101577 CN 89101577 CN 89101577 A CN89101577 A CN 89101577A CN 1039653 A CN1039653 A CN 1039653A
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- optical fiber
- sampling system
- branched type
- optical
- diameter measurer
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- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
Optical fiber branched type silk diameter measurer of the present invention is to can't harm the silk footpath of measuring textile fibres such as silk automatically, the instrument of checking uniformity coefficient, fault continuously.Optical sampling system of the present invention adopts optical fiber respective-guide type closed optical path, has good antijamming capability; The component arrangement of whole optical sampling system is on a plate, and the instrument volume is little, and test environment adaptability is strong; Adopt the amplifying circuit of high input impedance, the precision of instrument is better than 10
-3There is simulation to show and two kinds of demonstration means of MICROCOMPUTER PROCESSING printer prints that the staff can be carried to in-site measurement easily with measuring instrument, can connects microcomputer easily again, printer carries out work.
Description
The invention relates to a kind of filament cable diameter gauge, particularly about a kind of comprise optical sampling system, comparison amplifying circuit and all parts of analog display unit, and can be by interface and the automatic wire diameter measuring instrument of the joining photoelectricity of A/D converter, microcomputer and printer.
For the quality of giving textile fibres (as silk) is made correct evaluation, just must carry out continuous survey inspection to uniformity coefficient, the fault of fiber with the microfilament cable diameter gauge.Known microfilament cable diameter gauge has: the patent No. is that 86202908 silk uniformity coefficient and fault automatic gauging instrument and the patent No. are 86204917 novel photoelectric wire diameter measuring instrument.Because these two kinds of microfilament cable diameter gauges all are to adopt light field boundary formula light path, therefore their common deficiency places are exactly that the light field boundary is interfered easily, thereby influence the degree of accuracy of measuring, also have the demanding shortcoming of setting accuracy of some optical elements such as lens, semi-transparent semi-reflecting lens in addition.
The purpose of this invention is to provide a kind of light path good in anti-interference performance, volume is little, measuring accuracy the is high filament footpath electrooptical automatic measuring instrument of nondestructive measurement continuously.
Solution of the present invention is: (1) in optical sampling system, the light signal that the branch leaded light fibre that adopting has two forks sends light source is transferred to two photo detector-photosensitive tubes respectively; (2) all elements of optical sampling system: comprise optical signal generator-infrared light supply, a condenser lens, have the branch leaded light fibre of two forks, two photosensitive tubes and the whole stationary installations of guide wire apparatus on a plate; (3) leave the gap between a fork fiber end face and photosensitive tube, the gap is communicated with the external world by the hole of opening on plate; Guide wire apparatus is to make with alumina ceramic material, and tested strand is passing through in the gap between fiber end face and photosensitive tube under the guiding of guide wire apparatus continuously; (4) input of optical sampling system is modulated in advance; Relatively adopting relatively amplifying circuit of high input impedance in the amplifying circuit.
The present invention because: in optical sampling system, with light transmitting fiber the light signal that light source sends is transferred to the photo detector photosensitive tube respectively with two forks, thereby its light path is the closed light path with good resistance jamming performance, because light path is not subjected to external interference, thereby improved the degree of accuracy of measuring; Measuring instrument precision of the present invention is better than 10
-3; Because optical sampling system and each element are fixed on the plate, and divide the leaded light fibre shorter,, thereby make wire diameter measuring instrument can accomplish miniaturization so the volume of optical sampling system is very little; The suitable portable testing set of making.Photosensitive tube communicates with the external world by the hole on the plate with space between fiber end face, guaranteed that there are physical conditions such as identical temperature, humidity in two spaces, thereby improved the accuracy of comparison signal and to the adaptability of test environment, can test producing existing field boundary; Guide wire apparatus is made with alumina ceramic material, has good wearing quality; Tested strand passes through in the space between fiber end face and the photosensitive tube, accept detection, though the vibration of certain amplitude when advancing, strand can take place, because optical fiber has certain diameter, so do not influence the measurement in silk footpath, guide wire apparatus also need not high-precisionly be located simultaneously; Because signal is just to import optical sampling system after modulating in advance, so can remove the extraneous direct current light of interference well; Relatively amplifying circuit adopts the high input impedance amplifying circuit, can suppress common mode interference signal, and measuring-signal is amplified as difference mode signal, and the prime small-signal is not constituted resistive load; Whole measuring instrument has two kinds of display device, the testing staff can be easily with miniaturization measuring instrument take existing field boundary to and measure, in place with good conditionsi, again can be easily will microcomputer, printer carry out surveying work on connecting.
Technical scheme of the present invention can also illustrate by accompanying drawing: wherein Fig. 1 is the block diagram of optical fiber respective-guide type measuring instrument; Fig. 2 is the index path and the comparison amplification circuit diagram of optical sampling system; Fig. 3, Fig. 4, Fig. 5, Fig. 6 are respectively that front elevation, A-A sectional view, vertical view, the M direction that each element of optical sampling system is fixed on the plate changeed 45 ° of views.
In Fig. 1: signal modulator [1] is with the exchange current input optical sampling system [2] of signal-frequency stabilization of modulating, the different current signals that comparison amplifying circuit [3] will be imported compare and enlarge, the numerical value that records the silk footpath is shown by the form of analog display unit [4] with voltage, or by analog to digital converter [5] analog to digital conversion, microcomputer [6] processing, the silk footpath value printing that will be recorded by printer [7] shows.
In Fig. 2: the signal input light source [8] after signal modulator [1] will be modulated, optical signals lens [9] focus on and inject the light transmitting fiber [10] with two fork optical fiber [11], [12], photosensitive tube [13], [14] become photocurrent with the light signal that receives respectively, amplifier [15], [16] are converted into voltage with photocurrent respectively, the high input impedance difference channel is formed in amplifier [17], [18], [19], the strand diameter is measured, exported with voltage form.
In Fig. 3, Fig. 4, Fig. 5, Fig. 6, [20] be the fixing plate of each element of optical sampling system, what fix branch leaded light fibre is half garden shape groove, tested strand is directed in the gap between optical fiber [12] and photosensitive tube [13] by guide wire apparatus [22], [23] by groove [21] and passes through continuously, and [24], [25] are respectively space and the extraneous holes that communicates that makes on the plate between optical fiber and photosensitive tube.
Optical fiber respective-guide type silk of the present invention is through measuring instrument, mainly be to be used for the silk footpath of silk and the continuous nondestructive measurement of fault, also can be used to measure the measurement of the silk warp of other textile fibres and other material of diameter between 40 microns to 200 microns, the degree of accuracy of measuring instrument is better than 10
-3
Claims (5)
1, a kind of optical fiber branched type silk diameter measurer, it comprises optical sampling system, comparison amplifying circuit and all parts of analog display unit, and can link by interface and A/D converter, microcomputer and typewriter.Feature of the present invention is: in optical sampling system, the light signal that the light transmitting fiber that adopting has two forks sends light source is transferred to receiver--the photosensitive tube of two light respectively.
2, optical fiber branched type silk diameter measurer according to claim 1 is characterized in that: whole elements of optical sampling system all are that stationary installation is on a plate.
3, optical fiber branched type silk diameter measurer according to claim 2 is characterized in that: between the end face of fork optical fiber and the photosensitive tube a little gap is arranged respectively, each gap respectively has a hole that the gap is communicated with the external world on the plate relatively.
4, optical fiber branched type silk diameter measurer according to claim 2 is characterized in that: tested strand is passing through in the end face of a fork optical fiber and the space between the photosensitive tube under the guiding of the guide wire apparatus made with alumina ceramic material continuously.
5, optical fiber branched type silk diameter measurer according to claim 1 is characterized in that: the input signal of optical sampling system is modulated in advance, in comparing amplifying circuit, adopts the comparison amplifying circuit with high input impedance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89101577 CN1039653A (en) | 1989-03-22 | 1989-03-22 | A kind of optical fiber branched type silk diameter measurer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89101577 CN1039653A (en) | 1989-03-22 | 1989-03-22 | A kind of optical fiber branched type silk diameter measurer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1039653A true CN1039653A (en) | 1990-02-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89101577 Pending CN1039653A (en) | 1989-03-22 | 1989-03-22 | A kind of optical fiber branched type silk diameter measurer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1039653A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100401038C (en) * | 2004-02-12 | 2008-07-09 | 苏州大学 | Raw silk cohesion performance detecting method and device |
| CN102230901A (en) * | 2011-06-21 | 2011-11-02 | 福州大学 | Photoelectric detection device for fabric flaws |
-
1989
- 1989-03-22 CN CN 89101577 patent/CN1039653A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100401038C (en) * | 2004-02-12 | 2008-07-09 | 苏州大学 | Raw silk cohesion performance detecting method and device |
| CN102230901A (en) * | 2011-06-21 | 2011-11-02 | 福州大学 | Photoelectric detection device for fabric flaws |
| CN102230901B (en) * | 2011-06-21 | 2013-04-03 | 福州大学 | Photoelectric detection device for fabric flaws |
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