CN1484015A - Laser instrument for measuring cotton length - Google Patents
Laser instrument for measuring cotton length Download PDFInfo
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- CN1484015A CN1484015A CNA031418937A CN03141893A CN1484015A CN 1484015 A CN1484015 A CN 1484015A CN A031418937 A CNA031418937 A CN A031418937A CN 03141893 A CN03141893 A CN 03141893A CN 1484015 A CN1484015 A CN 1484015A
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- pendulum
- sampler
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- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention is a laser cotton length measurer, including base, shroud, sampler, light source, pull-put drive framework and photoelectric receiving equipment, also set with micro-computer control system, adopting key or mouse to operate the the micro-computer to control automatic measurement, able to synchronously give out the length indexes such as photoelectric length, span length, span length, and short fiber rate, and having high measuring precision.
Description
Technical field
The present invention is relevant with the cotton quality detection, particularly a kind of laser cotton length measuring instrument.
Background technology
The cotton length index is shown by indexs such as photoelectricity length, the length of span, short fibre content, modal length and average lengths usually.The length standard of national standard cotton mainly is to rely on import machine HVI900 cotton detecting large volume instrument to make at present, it is present state-of-the-art cotton tester, but this machine costs an arm and a leg, about 1,500,000 yuan one, only just have, can't promote the use of in cotton purchase system and general factory in scientific research institution and the cotton making of standard department.
The domestic cotton length measuring instrument has three kinds at present: one, Y146 photoelectricity length measuring instrument, be the product of domestic last century 80, the nineties, it can only the measuring light electrical length, and mechanical stability against short circuit is poor, measuring error is big, can not satisfy the requirement of the graduate length standard of cotton; Two, 530 fiber type length can only be measured the length of span of cotton, the about 30,000 dollars/platform of import price according to the shadow instrument; Three, the short fibre content measurement is to utilize Y111 roller formula length analyser, with cotton comb straight after, manually measure by root, statistical computation then, time-consuming, can not satisfy the requirement of growing cotton industry.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the shortcoming of above-mentioned prior art, and a kind of laser cotton length measuring instrument is provided, and it should have following characteristics:
1, structure is small and exquisite, and is easy to carry;
2, microcomputerized control is measured automatically, mouse or key controlled, data storage, liquid crystal display result or printout;
3, measuring accuracy height, repetitive error is little, can provide the cotton length index such as photoelectricity length, the length of span and short fibre content of cotton sample simultaneously;
4, cost is low, may extend to general spinnery and cotton purchase mechanism and uses.
Technical solution of the present invention is as follows:
A kind of laser cotton length measuring instrument comprises base, cover cap, light source, sampler, drags pendulum driving mechanism, photoelectric receiving arrangement, is characterized in:
1.. the described pendulum driving mechanism that drags, comprise: be provided with a motor fixed support in the position of base rear portion disalignment, fix a step motor on it, be respectively equipped with the cross slide way support before and after the middle part of this base, two ends at this two rail brackets longitudinally are provided with two guide rails, this two guide rail is provided with and movably drags pendulum, the axle of this step motor connects a leading screw by a shaft joint, this leading screw is located on the rail brackets versatilely, this leading screw is meshed with the screw that drags pendulum, this drags the upper end of pendulum to settle this sampler, and this drags the lower end of pendulum to be equiped with the moving grating of grating chi, is provided with and is somebody's turn to do the moving corresponding grating readout device of grating on base;
2.. the photoelectric cell group linear array that described photoelectric receiving arrangement is made up of the polylith photoelectric cell is installed in base on the Π shape photoelectric cell support between two rail bracketses;
3.. the formation of described light source is: be positioned at the semiconductor laser diode that is provided with on the perpendicular bisector of photoelectric cell group linear array at described base rear portion, the laser beam that this laser diode sends is through a cylindrical mirror broadening, incide 45 ° of catoptrons through 45 ° of light-passing boards, reflect again and cover overall optical electric battery linear array, and the partial reflection light light for referencial use of 45 ° of light-passing boards is received by the monitoring silicon photocell, changes into digital optical intensity signal input micro computer through the A/D transducer;
4.. also be provided with microcomputer control system, comprise micro computer, keyboard or mouse, display screen and other electronic circuits, be equiped with the circuit board that comprises micro computer, one display screen is set in the front of cover cap in the front portion of base;
5.. during work, this micro computer, driven by program step motor according to prior setting, this motor drives the leading screw rotation by shaft joint, and then make and drag pendulum on guide rail, to slide, the moving grating of grating chi and sampler be motion together thereupon also, and the position of sampler is represented in the position of moving grating, and by the grating readout device to micro computer outgoing position signal; When cotton sample enters the test reference position, micro computer sends pulse-modulated signal driving pulse power supply and supplies with laser diode, this laser diode sends pulse laser, its luminous intensity is detected by the monitoring silicon photocell, its relative light intensity data change into digital signal by the A/D transducer and import this computer, the light signal that each photoelectric cell receives alone in the photoelectric cell group linear array is sent into micro computer by the A/D transducer respectively simultaneously, the position signalling of moving grating is also sent into micro computer, this micro computer according to design sampling at a certain distance once, above-mentioned data are deposited in the static memory (SRAM) of micro computer, the line data of going forward side by side is handled.
Described photoelectric receiving arrangement is that the silicon photocell by several strips vertically is arranged in a photosurface shape silicon photocell receiver, and this face shape silicon photocell receiver is fixed on the Π shape photoelectric cell support; Corresponding light source then is installed on the light source bracket, this light source bracket is fixedlyed connected with the upper end of dragging pendulum, this drags the fixing described moving grating in lower end of pendulum, and this drags pendulum to slide on the rectangular guideway that rail brackets supports, and this drags the screw of pendulum to be meshed with described leading screw.
Described sampler is installed on the sampler support.
Utilize above-mentioned laser cotton length measuring instrument to measure the method for cotton length, be characterized in comprising the following steps:
1.. opening power, start this micro computer by keyboard or mouse, this micro computer is according to the program start laser cotton length measuring instrument of setting;
2.. sampler is when not clamping cotton sample as yet, and micro computer is tested by the process of measurement of setting, and each photoelectric cell obtains a series of light intensity signals [Inm]
0, each photronic weighting coefficient when being for data processing;
3.. utilize the national standard cotton sample to carry out a series of tests, obtain a series of light intensity signals [Inm]
Mark, form the cotton absorbance curves of series of standards through data processing, and indicate the indexs such as photoelectricity length, the length of span and short fibre content of this standarded cotton sample, deposit in the database of micro computer;
4.. cotton sample to be measured is required to hang on the sampler in accordance with regulations, micro computer by the program of setting while testing data processing, form absorbance curves to be measured;
5.. should absorbance curves to be measured and database in the cotton absorbance curves comparison of standard handle, at last with the data presentation such as photoelectricity length, the length of span and short fibre content of cotton sample to be measured on display screen or send printer prints output.
Technique effect of the present invention:
1, invention adopts laser diode to make light source, the intensity of light source and directivity all are better than LED source, and the laser diode emitted light beams is when-45 ° of light-passing boards, the partial reflection light of light-passing board is used as reference beam, the signal of the reflection luminous intensity that monitored photoelectric cell detects is imported micro computer after the A/D conversion, automatically adjust, can guarantee sampling and testing process stability of light source, can reduce light source drift in time greatly;
2, adopt the pulsed modulation power supply of microcomputerized control to supply with laser diode formation pulsed modulation light source, this helps reducing the influence of external veiling glare; The thermally-stabilised drifting problem that does not have light source can make this measuring instrument accomplish promptly to open promptly and survey, and has overcome the shortcoming that common Y146 photoelectricity Length Instrument need be started shooting and just can be measured after preheating half an hour;
3, adopt long and narrow silicon photocell linear array to make photoelectric receiving arrangement, help processing to the sensitivity of the light transmission rate in the cotton sample length range, photoelectric cell group linear array is made up of some separate photoelectric cells, the light signal that each photoelectric cell receives is alone sent into micro computer by the A/D transducer respectively, although each photronic sensitivity difference, but by after the weighted, just can overcome each photoelectric cell because the error that the sensitivity difference is brought, simultaneously, because each photoelectric cell is separate, micro computer can obtain cotton sample light transmission rate cross direction profiles curve, helps data processing.
When 4, especially adopting photoscanning mode structure, cotton sample is motionless in test process, the error that the shake that can avoid the cotton sample motion to produce brings measurement.
Description of drawings
Fig. 1 is laser cotton length measuring instrument embodiment 1 a structure schematic side view of the present invention.
Fig. 2 is embodiment 1 schematic top plan view.
Fig. 3 is the embodiment of the invention 1 a microcomputerized control block diagram.
Fig. 4 is the embodiment of the invention 2 structure schematic side view.
Fig. 5 is the schematic top plan view of embodiment 2.
Fig. 6 is the embodiment of the invention 2 microcomputerized control block diagrams.
Among the figure:
1-base 11-circuit board
2-cover cap 21-front
3-sampler 31-sampler support 32-cotton sample
4-light source 41-laser diode 42-cylindrical lens
43-45 ° of light-passing board 44-45 ° of catoptron 45-monitoring silicon photocell
46-pulse power 47-light source bracket
5-drags pendulum driving mechanism 51-step motor 52-motor fixed support
53-shaft joint 54-leading screw
55-drags pendulum 551-to drag pendulum screw 552-coupling block
56-rail brackets 57-guide rail 571-rectangular guideway
58-grating chi 581-moves grating 582-grating readout device
6-photoelectric receiving arrangement 61-Π shape photoelectric cell support
62-photoelectric cell linear array 63-photoelectric cell
64-face shape silicon photocell receiver
7-microcomputer control system 70-micro computer
71-keyboard or mouse 72-display screen
73-D/A conversion 74,75-A/D transducer
Embodiment
Also the invention will be further described in conjunction with the accompanying drawings below by embodiment.
Fig. 1 and Fig. 2 are the structural representations of laser cotton length measuring instrument embodiment 1 of the present invention.As seen from the figure, laser cotton length measuring instrument of the present invention comprises base 1, cover cap 2, sampler 3, light source 4, drags pendulum driving mechanism 5, photoelectric receiving arrangement 6 and microcomputer control system 7, is characterized in:
1.. the described pendulum driving mechanism 5 that drags, comprise: be provided with a motor fixed support 52 in the position of base 1 rear portion disalignment, fix a step motor 51 on it, be respectively equipped with cross slide way support 56 before and after the middle part of this base 1, longitudinally be provided with two guide rails 57 at the two ends of this two rail brackets 56, this two guide rail 57 is provided with and movably drags pendulum 55, the axle of this step motor 51 connects a leading screw 54 by a shaft joint 53, this leading screw 54 is located on the rail brackets 56 versatilely, this leading screw 54 is meshed with the screw 551 that drags pendulum 55, this drags the upper end of pendulum 55 to settle this sampler 3, this drags the lower end of pendulum 55 to be equiped with the moving grating 581 of grating chi 58, is provided with and is somebody's turn to do moving grating 581 corresponding grating readout devices 582 on base 1;
2.. the photoelectric cell group linear array 62 that described photoelectric receiving arrangement 6 is made up of four photoelectric cells 63 is installed in base 1 on the Π shape photoelectric cell support 61 between two rail bracketses 56;
3.. the formation of described light source 4 is: be positioned at the semiconductor laser diode 41 that is provided with on the perpendicular bisector of photoelectric cell group linear array 62 at described base 1 rear portion, the laser beam that this laser diode 41 sends is through a cylindrical mirror 42 broadenings, incide 45 ° of catoptrons 44 through 45 ° of light-passing boards 43, reflect again and cover overall optical electric battery linear array 62, and the partial reflection light light for referencial use of 45 ° of light-passing boards 43 is received by monitoring silicon photocell 45, changes into digital optical intensity signal input micro computer 70 through A/D transducer 75;
4.. also be provided with microcomputer control system 7, comprise micro computer 70, keyboard or mouse 71, display screen 72 and other electronic circuits, be equiped with the circuit board 11 that comprises micro computer 70 in the front portion of base 1, a display screen 72 is set in the front 21 of cover cap 2.
Fig. 3 is the microcomputerized control block diagram of present embodiment 1.
During work, this micro computer 70 is according to the driven by program step motor of setting in advance 51, this motor 51 drives leading screw 54 rotations by shaft joint 53, and then make and drag pendulum 55 on guide rail 57, to slide, the moving grating 581 of grating chi 58 and sampler 3 be motion together thereupon also, the position of sampler 3 is represented in the position of moving grating 581, and by grating readout device 582 to micro computer 70 outgoing position signals; When cotton sample 32 enters the test reference position, micro computer sends pulse-modulated signal driving pulse power supply 46 by D/A transducer 73 and gives laser diode 41 power supplies, this laser diode 41 sends pulse laser, its luminous intensity is detected by monitoring silicon photocell 45, its relative light intensity data change into digital signal by A/D transducer 75 and import this computer 70, the light signal that each photoelectric cell 63 receives alone in the photoelectric cell group linear array 62 is sent into micro computer 70 by A/D transducer 74 respectively simultaneously, the position signalling of moving grating 581 is also sent into micro computer 70, this micro computer 70 according to design at a certain distance, for example the 0.1mm sampling once, above-mentioned data are deposited in the static memory (SRAM) of micro computer 70, the line data of going forward side by side is handled.
The method that the present invention measures cotton length comprises the following steps:
1.. after the opening power, start this micro computer 70 by keyboard or mouse 71, this micro computer 70 is according to the program start laser cotton length measuring instrument of setting;
2.. sampler 3 is not as yet during clamping cotton sample 32, and micro computer 70 is tested by the process of measurement of setting, and each photoelectric cell obtains a series of light intensity signals [Inm]
0, make the weighting coefficient of each photoelectric cell 63 when being used for data processing;
3.. utilize the national standard cotton sample to carry out a series of tests, obtain a series of light intensity signals [Inm]
Mark, form the cotton absorbance curves of series of standards through data processing, and indicate the indexs such as photoelectricity length, the length of span and short fibre content of this standarded cotton sample, deposit in the database of micro computer;
4.. cotton sample 32 to be measured is required to hang on the sampler 3 in accordance with regulations, micro computer 70 by the program of setting while testing data processing, form absorbance curves to be measured;
5.. should absorbance curves to be measured and database in the cotton absorbance curves comparison of standard handle, at last with the data presentation such as photoelectricity length, the length of span and short fibre content of cotton sample 32 to be measured on display screen 72 or send printer prints output.
Fig. 4 and Fig. 5 are the structural representations of the embodiment of the invention 2.Fig. 6 is the microcomputerized control block scheme of embodiment 2.As seen from the figure, embodiment 2 and embodiment 1 are structurally basic identical, embodiment 2 compares the most basic difference with embodiment 1 be exactly after cotton sample 32 is hung on the sampler 3, in whole measuring process, cotton sample 32 is fixed, measuring process is by the linear laser beam that laser diode 41 sends cotton sample 32 to be scanned, by each photoelectric cell 63 of face shape silicon photocell receiver 64 alone receiving optical signals change into the process of digital signal input micro computer 70 respectively by A/D transducer 74.Corresponding variation is structurally arranged thus:
1, described photoelectric receiving arrangement 6 is vertically to be arranged in a photosurface shape silicon photocell receiver 64 by some strip silicon photocells 63, this face shape silicon photocell receiver 64 is fixed on the Π shape photoelectric cell support 61 and is positioned at the below of sampler 3, and the length of its photosurface and width are slightly larger than the length and the width of cotton sample 32 to be measured in the sampler 3.
2, corresponding light source then is installed on the light source bracket 47, this light source comprises semiconductor laser diode 41, cylindrical lens 42,45 ° of light-passing boards 43,45 ° of catoptrons 44 and monitoring silicon photocell 45, the laser beam that this laser diode 41 sends is through cylindrical lens 42 broadenings, 45 ° of light-passing boards 43 incide 45 ° of catoptrons 44 and catadioptric downward formation one linear laser beam irradiation cotton sample 32, its transmitted light quilt cover shape silicon photocell receiver 64 receives, and each photoelectric cell 63 of its composition receiving optical signals by oneself changes in the digital signal input micro computer 70 by A/D transducer 74 respectively.
3, this light source bracket 47 is fixedly mounted on the upper end of dragging pendulum 55, this drags the fixing described moving grating 581 in lower end of pendulum 55, on base 1, install grating readout device 582 accordingly, this drags pendulum 55 to be slidably mounted on the rectangular guideway 571, this guide rail 571 is installed on the rail brackets 56, and this drags the screw 551 of pendulum 55 to be meshed with described leading screw 54.
The computer control block diagram of 4 embodiment 2 also slightly changes, as shown in Figure 6.
Embodiment 2 is in the measuring process than the great advantage of embodiment 1, and cotton sample is motionless, just scans wire measuring beam and moving grating and is dragged by motor and move, thereby can avoid the cotton sample motion to produce the error that shake brings measurement.
The present invention adopts button or mouse action, and microcomputerized control is measured automatically, and is easy to use, can provide photoelectricity length, the length of span, the short fibre content equal length index of cotton simultaneously, the measuring accuracy height, and cost is not high, may extend to general cotton industry factory and purchasing department and is extensive use of.
Claims (4)
1, a kind of laser cotton length measuring instrument comprises base (1), cover cap (2), sampler (3), light source (4), drags pendulum driving mechanism (5), photoelectric receiving arrangement (6), it is characterized in that:
1.. the described pendulum driving mechanism (5) that drags, comprise: the position at base (1) rear portion disalignment is provided with a motor fixed support (52), fix a step motor (51) on it, be respectively equipped with cross slide way support (56) before and after the middle part of this base (1), longitudinally be provided with two guide rails (57) at the two ends of this two rail brackets (56), this two guide rail (57) is provided with and movably drags pendulum (55), the axle of this step motor (51) connects a leading screw (54) by shaft joint (53), this leading screw (54) is located on the rail brackets (56) versatilely, this leading screw (54) is meshed with the screw that drags pendulum (55) (551), this drags the upper end of pendulum (55) to settle this sampler (3), this drags the lower end of pendulum (55) to be equiped with the moving grating (581) of grating chi (58), is provided with and is somebody's turn to do the moving corresponding grating readout device of grating (581) (582) on base (1);
2.. the photoelectric cell group linear array (62) that described photoelectric receiving arrangement (6) is made up of polylith photoelectric cell (63) is installed in base (1) and is positioned on the Π shape photoelectric cell support (61) between two rail bracketses (56);
3.. the formation of described light source (4) is: be positioned at the semiconductor laser diode (41) that is provided with on the perpendicular bisector of photoelectric cell group linear array (62) at described base (1) rear portion, the laser beam that this laser diode (41) sends is through a cylindrical mirror (42) broadening, incide 45 ° of catoptrons (44) through 45 ° of light-passing boards (43), reflect again and cover overall optical electric battery linear array (62), and the partial reflection light light for referencial use of 45 ° of light-passing boards (43) is received by monitoring silicon photocell (45), changes into digital optical intensity signal input micro computer (70) through A/D transducer (75);
4.. also be provided with microcomputer control system (7), comprise micro computer (70), keyboard or mouse (71), display screen (72) and other electronic circuits, be equiped with the circuit board (11) that comprises micro computer (70) in the front portion of base (1), display screen (72) be set in the front (21) of cover cap (2);
5.. during work, start this micro computer (70) by keyboard or mouse (71), this micro computer (70) is according to the driven by program step motor of setting in advance (51), this motor (51) drives leading screw (54) rotation by shaft joint (53), and then make and drag pendulum (55) go up to slide at guide rail (57), the moving grating (581) of grating chi (58) and sampler (3) be motion together thereupon, the position of sampler (3) is represented in the position of moving grating (581), and by grating readout device (582) to micro computer (70) outgoing position signal; When cotton sample (32) enters the test reference position, micro computer (70) sends pulse-modulated signal and gives laser diode (41) power supply by D/A transducer (73) driving pulse power supply (46), this laser diode (41) sends pulse laser, its luminous intensity is detected by monitoring silicon photocell (45), its relative light intensity data change into digital signal by A/D transducer (75) and import this computer (70), the light signal that each photoelectric cell (63) receives alone in the photoelectric cell group linear array (62) is sent into micro computer (70) by A/D transducer (74) respectively simultaneously, the position signalling of moving grating (581) is also sent into micro computer (70), this micro computer (70) according to design sampling at a certain distance once, above-mentioned data are deposited in the static memory (SRAM) of micro computer (70), the line data of going forward side by side is handled.
2, laser cotton length measuring instrument according to claim 1, it is characterized in that described photoelectric receiving arrangement (6) is that silicon photocell by several strips vertically is arranged in a photosurface shape silicon photocell receiver (64), this face shape silicon photocell receiver (64) is fixed on the Π shape photoelectric cell support (61); Corresponding light source (4) then is installed on the light source bracket (47), this light source bracket (47) is fixedlyed connected with the upper end of dragging pendulum (55), this drags the fixing described moving grating (581) in lower end of pendulum (55), this drags pendulum (55) to be slidably mounted on the rectangular guideway (571) of rail brackets (56) support, this drags the screw (551) of pendulum (55) to be meshed with described screw mandrel (54), sampler (3) then breaks away from dragging pendulum (55), maintains static.
3, laser cotton length measuring instrument according to claim 2 is characterized in that described sampler (3) is installed on the sampler support (31).
4, utilize claim 1 or 2 described laser cotton length measuring instruments to measure the method for cotton length, it is characterized in that comprising the following steps:
1.. after the opening power, start this micro computer (70) by keyboard or mouse (71), this micro computer (70) is according to the program start laser cotton length measuring instrument of setting;
2.. sampler (3) is when not clamping cotton sample (32) as yet, and micro computer (70) is tested by the process of measurement of setting, and each photoelectric cell (63) obtains a series of light intensity signals [Inm]
0, the weighting coefficient of each photoelectric cell (63) when usefulness is for data processing;
3.. utilize the national standard cotton sample to carry out a series of tests, obtain a series of light intensity signals [Inm]
Mark, form the cotton absorbance curves of series of standards through data processing, and indicate the indexs such as photoelectricity length, the length of span and short fibre content of this standarded cotton sample, deposit in the database of micro computer (70);
4.. cotton sample to be measured (32) is required to hang on the sampler (3) in accordance with regulations, micro computer (70) by the program of setting while testing data processing, form absorbance curves to be measured;
5.. should absorbance curves to be measured and database in the cotton absorbance curves comparison of standard handle, the data presentation such as photoelectricity length, the length of span and short fibre content with cotton sample to be measured go up or send printer prints output at display screen (72) at last.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03141893 CN1206526C (en) | 2003-07-29 | 2003-07-29 | Laser instrument for measuring cotton length |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03141893 CN1206526C (en) | 2003-07-29 | 2003-07-29 | Laser instrument for measuring cotton length |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1484015A true CN1484015A (en) | 2004-03-24 |
| CN1206526C CN1206526C (en) | 2005-06-15 |
Family
ID=34155506
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03141893 Expired - Fee Related CN1206526C (en) | 2003-07-29 | 2003-07-29 | Laser instrument for measuring cotton length |
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| Country | Link |
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| CN (1) | CN1206526C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105737739A (en) * | 2016-02-02 | 2016-07-06 | 齐齐哈尔大学 | Experiment device and method of utilizing total reflection prism to measure tiny length change of fine wire |
| CN108317960A (en) * | 2018-04-20 | 2018-07-24 | 昆明理工大学 | A kind of flowers grading plant |
| CN109655000A (en) * | 2019-01-24 | 2019-04-19 | 上海康信光电仪器有限公司 | Cotton fiber length measuring system and method |
-
2003
- 2003-07-29 CN CN 03141893 patent/CN1206526C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105737739A (en) * | 2016-02-02 | 2016-07-06 | 齐齐哈尔大学 | Experiment device and method of utilizing total reflection prism to measure tiny length change of fine wire |
| CN105737739B (en) * | 2016-02-02 | 2018-05-15 | 齐齐哈尔大学 | Utilize the experimental provision and method of total reflection prism measurement filament tiny length change |
| CN108317960A (en) * | 2018-04-20 | 2018-07-24 | 昆明理工大学 | A kind of flowers grading plant |
| CN109655000A (en) * | 2019-01-24 | 2019-04-19 | 上海康信光电仪器有限公司 | Cotton fiber length measuring system and method |
| CN109655000B (en) * | 2019-01-24 | 2024-10-11 | 上海康信光电仪器有限公司 | Cotton fiber length measurement system and method |
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| Publication number | Publication date |
|---|---|
| CN1206526C (en) | 2005-06-15 |
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