CN110929834B - Laser scanning device for spinning counting - Google Patents
Laser scanning device for spinning counting Download PDFInfo
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- CN110929834B CN110929834B CN201911003404.5A CN201911003404A CN110929834B CN 110929834 B CN110929834 B CN 110929834B CN 201911003404 A CN201911003404 A CN 201911003404A CN 110929834 B CN110929834 B CN 110929834B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
- G06M1/00—Design features of general application
- G06M1/27—Design features of general application for representing the result of count in the form of electric signals, e.g. by sensing markings on the counter drum
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
- G06M7/00—Counting of objects carried by a conveyor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/30—Computing systems specially adapted for manufacturing
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses a laser scanning device for spinning counting, which comprises a laser generator, a light beam adjusting mechanism, a photoelectric conversion mechanism, a signal detection module and a storage counting processing module, wherein the light beam adjusting mechanism, the photoelectric conversion mechanism and the signal detection module are sequentially arranged in parallel, the single color and the intensity uniformity of laser are utilized to count a precursor or a fiber, and the difference between the maximum value and the minimum value of the signal is large, so that a pulse signal is easy to distinguish and a counting error is not easy to occur.
Description
Technical Field
The invention relates to a laser scanning device for spinning counting, and belongs to the technical field of spinning counting statistics.
Background
In the production process of spinning, it is often necessary to count the number of filaments. Most of the strands have diameters of 1um-1mm, and when a cluster of strands are gathered, the traditional manual direct counting is heavy in work and easy to generate errors. In addition, manual direct counting often affects the filaments, and fragile and pliable filaments may be damaged during the counting process. In order to improve the counting efficiency of the precursor, the accuracy of the precursor counting is increased, the application scene of the precursor counting is widened, and the purpose of nondestructive counting is achieved.
A counter is essentially a device capable of recording the number of pulse signals. The method is mainly used for metering the number of the articles. Traditional counters are often based on a single chip microcomputer. Generally comprises the following parts: control button (control system), singlechip (counting system), display (characterization system). The main basic principle is that the control system sets the singlechip, the singlechip is responsible for counting signals generated by counting, and the display system displays the number or the operation result.
Other schemes for counting filaments or fibers exist, such as patent application No. 201811365711.3, which is a method for testing the number of fibers in a yarn, and the main principle is that a length of fibers is cut equally and dissolved in a solution, and the concentration of fiber components in the solution is measured and divided by the concentration of the solution of individual equal length fibers to obtain the number of fibers.
The preparation method comprises the following steps: the synthetic fiber filament counter is sold by the agency of the standard group (hong Kong) Limited. Although the product can achieve the purpose of fiber counting, the maximum counting range can only reach 999 fibers/times, and the product needs a complex optical system and matched software, is provided with a monitoring screen, has high cost and limited application range.
Disclosure of Invention
Technical problems: the invention discloses a laser scanning device for spinning counting, which aims at the technical defects of heavy manual counting workload and inaccurate counting of spinning, adopts laser to irradiate a spinning plane, maps corresponding bright and dark stripe patterns in a photoelectric conversion mechanism, and converts the bright and dark stripe patterns into stable pulse level signals; screening pulse level signal peak values by setting light intensity minimum values, and eliminating interference phenomena from affecting the accuracy of counting results; and meanwhile, comparing the count values of two adjacent times continuously to judge whether the count values are the same or not, and further correcting the count result. The invention overcomes the technical defects that the traditional method for counting the precursor or the fiber has complex process, is easy to damage the quality of the precursor or the fiber, has large counting error and small maximum counting range, and can not count in batches.
The technical scheme is as follows: the invention discloses a laser scanning device for spinning counting, which comprises a laser generator, a light beam adjusting mechanism, a photoelectric conversion mechanism, a signal detection module and a storage counting processing module, wherein the light beam adjusting mechanism, the photoelectric conversion mechanism and the signal detection module are sequentially arranged in parallel, a spinning plane to be irradiated is arranged between the light beam adjusting mechanism and the photoelectric conversion mechanism in parallel, the output end of the photoelectric conversion mechanism is connected with the input end of the signal detection module, and the output end of the signal detection module is connected with the input end of the storage counting processing module;
the laser generator transmits single-frequency narrow linewidth light to the light beam adjusting mechanism and irradiates the spinning plane, the photoelectric conversion mechanism receives the light beam irradiating the spinning plane to form a bright-dark stripe pattern, the bright-dark stripe pattern is converted into a pulse level signal and transmitted to the signal detection module, the signal detection module compares and scans the pulse level signal peak value according to the light intensity minimum value, if the pulse level signal peak value is larger than the light intensity minimum value, the pulse level signal peak value is put into the pulse level signal counting queue to be accumulated to obtain a count value, the count value of each time sequence pulse level signal is transmitted to the storage counting processing module, when the signal detection module transmits a second count value to the storage counting processing module, the storage counting processing module judges whether the first count value is identical to the second count value, and if the two continuous count values are identical, the count value is output as a final counting result; if the two continuous count values are different, the signal detection module compares the scanning pulse level signal count again.
Preferably, the laser generator has a laser output single-frequency narrow linewidth optical wavelength of 355nm, an output power of 10W and an energy density of 1J/cm 2 The light spots are rectangular or linear.
Preferably, the spinning plane is a carbon fiber spinning plane, a silicon carbide fiber spinning plane or an alumina fiber spinning plane.
Preferably, the minimum value of the light intensity is 0-10% of the peak value of the light intensity.
The beneficial effects are that: the invention provides a laser scanning device for spinning counting, which counts fibers by utilizing the monochromaticity and the intensity uniformity of laser, and makes pulse signals easy to distinguish and difficult to generate counting errors by utilizing large difference between signal maximum values and signal minimum values. The counting process of the invention does not damage the filaments or fibers. Through reasonable selection of laser wavelength and energy, the counting precision is not affected by interference phenomenon caused by too small gaps among fibers, and the precursor or fibers are not damaged due to too large energy. The single theoretical counting range is greatly expanded, and the maximum theoretical counting range can reach 32000 roots/time. The counting efficiency and the counting precision are greatly improved.
Drawings
Fig. 1 is a line diagram of a pulse level signal according to the present invention.
Fig. 2 is a schematic block diagram of a laser scanning device for spinning counts according to the present invention.
Detailed Description
The present disclosure is described in further detail below with reference to the drawings and the embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant content and not limiting of the present disclosure. It should be further noted that, for convenience of description, only a portion relevant to the present disclosure is shown in the drawings.
In addition, embodiments of the present disclosure and features of the embodiments may be combined with each other without conflict. The technical aspects of the present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Unless otherwise indicated, the exemplary implementations/embodiments shown are to be understood as providing exemplary features of various details of some ways in which the technical concepts of the present disclosure may be practiced. Thus, unless otherwise indicated, features of the various implementations/embodiments may be additionally combined, separated, interchanged, and/or rearranged without departing from the technical concepts of the present disclosure.
The use of cross-hatching and/or shading in the drawings is typically used to clarify the boundaries between adjacent components. As such, the presence or absence of cross-hatching or shading does not convey or represent any preference or requirement for a particular material, material property, dimension, proportion, commonality between illustrated components, and/or any other characteristic, attribute, property, etc. of a component, unless indicated. In addition, in the drawings, the size and relative sizes of elements may be exaggerated for clarity and/or descriptive purposes. While the exemplary embodiments may be variously implemented, the specific process sequences may be performed in a different order than that described. For example, two consecutively described processes may be performed substantially simultaneously or in reverse order from that described. Moreover, like reference numerals designate like parts.
When an element is referred to as being "on" or "over", "connected to" or "coupled to" another element, it can be directly on, connected or coupled to the other element or intervening elements may be present. However, when an element is referred to as being "directly on," "directly connected to," or "directly coupled to" another element, there are no intervening elements present. For this reason, the term "connected" may refer to physical connections, electrical connections, and the like, with or without intermediate components.
For descriptive purposes, the present disclosure may use spatially relative terms such as "under … …," under … …, "" under … …, "" lower, "" above … …, "" upper, "" above … …, "" higher "and" side (e.g., in "sidewall") to describe one component's relationship to another (other) component as illustrated in the figures. In addition to the orientations depicted in the drawings, the spatially relative terms are intended to encompass different orientations of the device in use, operation, and/or manufacture. For example, if the device in the figures is turned over, elements described as "under" or "beneath" other elements or features would then be oriented "over" the other elements or features. Thus, the exemplary term "below" … … can encompass both an orientation of "above" and "below". Furthermore, the device may be otherwise positioned (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
As shown in fig. 1 and fig. 2, the invention discloses a laser scanning device for spinning counting, which comprises a laser generator, a light beam adjusting mechanism, a photoelectric conversion mechanism, a signal detection module and a storage counting processing module, wherein the light beam adjusting mechanism, the photoelectric conversion mechanism and the signal detection module are sequentially arranged in parallel, a spinning plane to be irradiated is arranged between the light beam adjusting mechanism and the photoelectric conversion mechanism in parallel, the output end of the photoelectric conversion mechanism is connected with the input end of the signal detection module, and the output end of the signal detection module is connected with the input end of the storage counting processing module;
the laser generator transmits single-frequency narrow linewidth light to the light beam adjusting mechanism and irradiates the spinning plane, the photoelectric conversion mechanism receives the light beam irradiating the spinning plane to form a bright-dark stripe pattern, the bright-dark stripe pattern is converted into a pulse level signal and transmitted to the signal detection module, the signal detection module compares and scans the pulse level signal peak value according to the light intensity minimum value, if the pulse level signal peak value is larger than the light intensity minimum value, the pulse level signal peak value is put into the pulse level signal counting queue to be accumulated to obtain a count value, the count value of each time sequence pulse level signal is transmitted to the storage counting processing module, when the signal detection module transmits a second count value to the storage counting processing module, the storage counting processing module judges whether the first count value is identical to the second count value, and if the two continuous count values are identical, the count value is output as a final counting result; if the two continuous count values are different, the signal detection module compares the scanning pulse level signal count again.
Preferably, the laser generator has a laser output single-frequency narrow linewidth optical wavelength of 355nm, an output power of 10W and an energy density of 1J/cm 2 The light spots are rectangular or linear.
Preferably, the spinning plane is a carbon fiber spinning plane, a silicon carbide fiber spinning plane or an alumina fiber spinning plane.
Preferably, the minimum value of the light intensity is 0-10% of the peak value of the light intensity.
And the counting fibers to be detected are tiled into a single-layer uniformly arranged fiber spinning plane through a winding wheel before beam expansion and a winding wheel after beam expansion. The width of the single-layer fiber spinning plane ranges from 5cm to 80cm, and the width of the gaps among fibers is not less than 2um.
The laser beam linewidth should be 2-4cm wider than the fiber spread width to ensure that all fibers can be counted. However, this is not a mandatory requirement, and the number of fibers in the partial width may also be counted.
Example 1
The laser output single-frequency narrow linewidth wavelength of the laser generator is 355nm, the output power is 10W, and the energy density is 1J/cm 2 The light spots are distributed in a rectangular shape; the spinning plane is a carbon fiber spinning plane; the minimum value of the light intensity is 0% of the peak value of the light intensity; the width of the single-layer fiber spinning plane was in the range of 80cm.
Example 2
The laser output single-frequency narrow linewidth wavelength of the laser generator is 355nm, the output power is 10W, and the energy density is 1J/cm 2 The light spots are distributed linearly; the spinning plane is a silicon carbide fiber spinning plane. The minimum value of the light intensity is 10% of the peak value of the light intensity; the width of the single-layer fiber spinning plane was in the range of 5cm.
Example 3
The laser output single-frequency narrow linewidth wavelength of the laser generator is 355nm, the output power is 10W, and the energy density is 1J/cm 2 The light spots are distributed in a rectangular shape; the spinning plane is an alumina fiber spinning plane. The minimum value of the light intensity is 5% of the peak value of the light intensity. The width of the single-layer fiber spinning plane was in the range of 50cm.
Example 4
The laser output single-frequency narrow linewidth wavelength of the laser generator is 355nm, the output power is 10W, and the energy density is 1J/cm 2 The light spots are distributed in a rectangular shape; the spinning plane is an alumina fiber spinning plane. The minimum value of the light intensity is 7% of the peak value of the light intensity. The width of the single-layer fiber spinning plane was in the range of 20cm.
Example 5
The laser output single-frequency narrow linewidth wavelength of the laser generator is 355nm, the output power is 10W, and the energy density is 1J/cm 2 The light spots are distributed in a rectangular shape; the spinning plane is an alumina fiber spinning plane. The minimum value of the light intensity is 2% of the peak value of the light intensity. The width of the single-layer fiber spinning plane was in the range of 80cm.
In the description of the present specification, reference to the terms "one embodiment/manner," "some embodiments/manner," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/manner or example is included in at least one embodiment/manner or example of the present application. In this specification, the schematic representations of the above terms are not necessarily for the same embodiment/manner or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/modes or examples described in this specification and the features of the various embodiments/modes or examples can be combined and combined by persons skilled in the art without contradiction.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless explicitly defined otherwise.
It will be appreciated by those skilled in the art that the above-described embodiments are merely for clarity of illustration of the disclosure, and are not intended to limit the scope of the disclosure. Other variations or modifications will be apparent to persons skilled in the art from the foregoing disclosure, and such variations or modifications are intended to be within the scope of the present disclosure.
Description of the reference numerals
Laser generator 1
Beam adjusting mechanism 2
Photoelectric conversion mechanism 3
Signal detection module 4
Storage count processing module 5
Spinning plane 6.
Claims (4)
1. A laser scanning device for spinning counting, characterized in that: the device comprises a laser generator, a light beam adjusting mechanism, a photoelectric conversion mechanism, a signal detection module and a storage counting processing module, wherein the light beam adjusting mechanism, the photoelectric conversion mechanism and the signal detection module are sequentially arranged in parallel, a spinning plane to be irradiated is arranged between the light beam adjusting mechanism and the photoelectric conversion mechanism in parallel, the output end of the photoelectric conversion mechanism is connected with the input end of the signal detection module, and the output end of the signal detection module is connected with the input end of the storage counting processing module;
the laser generator transmits single-frequency narrow linewidth light to the light beam adjusting mechanism and irradiates the spinning plane, the photoelectric conversion mechanism receives a bright-dark stripe pattern formed by irradiating the spinning plane by the laser and converts the bright-dark stripe pattern into a pulse level signal to be transmitted to the signal detection module, the signal detection module compares and scans the pulse level signal peak value according to the light intensity minimum value, if the pulse level signal peak value is larger than the light intensity minimum value, the pulse level signal peak value is put into the pulse level signal counting queue to be accumulated to obtain a count value, the count value of each time sequence pulse level signal is transmitted to the storage counting processing module, when the signal detection module transmits a second count value to the storage counting processing module, the storage counting processing module judges whether the first count value is identical to the second count value, and if the two continuous count values are identical, the count value is output as a final counting result; if the two continuous count values are different, the signal detection module compares the scanning pulse level signal count again.
2. A laser scanning device for spinning counts as claimed in claim 1, wherein: the laser output single-frequency narrow linewidth light wavelength of the laser generator is 355nm, the output power is 10W, and the energy density is 1J/cm 2 The light spots are rectangular or linear.
3. A laser scanning device for spinning counts as claimed in claim 1, wherein: the spinning plane is a carbon fiber spinning plane, a silicon carbide fiber spinning plane or an alumina fiber spinning plane.
4. A laser scanning device for spinning counts as claimed in claim 1, wherein: the minimum value of the light intensity is 0-10% of the peak value of the light intensity.
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| CN201911003404.5A CN110929834B (en) | 2019-10-22 | 2019-10-22 | Laser scanning device for spinning counting |
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| CN201911003404.5A CN110929834B (en) | 2019-10-22 | 2019-10-22 | Laser scanning device for spinning counting |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102212893A (en) * | 2011-05-14 | 2011-10-12 | 青岛大学 | Device for preparing nano fiber twisted structure |
| CN105371755A (en) * | 2015-11-27 | 2016-03-02 | 成都信息工程大学 | Wavelength correction type multi-beam step plane reflecting mirror laser interferometer and wavelength correction method |
| CN107438776A (en) * | 2015-02-23 | 2017-12-05 | 达尔特斯能源物理学院 | Photon counting |
| CN107994451A (en) * | 2018-01-15 | 2018-05-04 | 山东大学 | Narrow linewidth MOPA fiber amplifiers and the method for detecting SBS light |
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2019
- 2019-10-22 CN CN201911003404.5A patent/CN110929834B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102212893A (en) * | 2011-05-14 | 2011-10-12 | 青岛大学 | Device for preparing nano fiber twisted structure |
| CN107438776A (en) * | 2015-02-23 | 2017-12-05 | 达尔特斯能源物理学院 | Photon counting |
| CN105371755A (en) * | 2015-11-27 | 2016-03-02 | 成都信息工程大学 | Wavelength correction type multi-beam step plane reflecting mirror laser interferometer and wavelength correction method |
| CN107994451A (en) * | 2018-01-15 | 2018-05-04 | 山东大学 | Narrow linewidth MOPA fiber amplifiers and the method for detecting SBS light |
Non-Patent Citations (1)
| Title |
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| 光子脉冲外差探测系统的测距精度;罗韩君 等;中国激光;第40卷(第12期);179-185 * |
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