CN102914547A - System and method for automatically detecting impurities in bottled liquid - Google Patents
System and method for automatically detecting impurities in bottled liquid Download PDFInfo
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- CN102914547A CN102914547A CN2012103801888A CN201210380188A CN102914547A CN 102914547 A CN102914547 A CN 102914547A CN 2012103801888 A CN2012103801888 A CN 2012103801888A CN 201210380188 A CN201210380188 A CN 201210380188A CN 102914547 A CN102914547 A CN 102914547A
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Abstract
The invention provides a system and method for automatically detecting impurities in a bottled liquid. A multi-channel optical image analog signal detecting method is adopted, wherein detected liquid bottles are loaded to a big circular turntable in sequence; the big turntable rotates at a constant speed of a plurality of revolutions per minute; after being driven by a motor to rotate around an axis at a high speed, the detected liquid bottles are braked; the liquid bottles stop rotating and the liquids still continue to rotate due to inertia; a light transmitting unit, which comprises a light source, a lens, a slit and a cylindrical lens, and a light receiving unit, which comprises an array lens and an array detector, are mounted on a follow-up turntable, which synchronously rotates together with the big turntable and rapidly returns; when the follow-up turntable and the detected liquid bottles are kept in a relative static state, the variation of a light intensity signal is continuously monitored, the continuous monitored light intensity signal is processed and analyzed; and the existence of the impurities is judged through analyzing the variation of the light intensity signal. According to the invention, the impurities in the liquid can be efficiently detected; and compared with a machine vision method, the system for automatically detecting the impurities in the bottled liquid, provided by the invention, has the advantages of low equipment cost and greater easiness in maintenance.
Description
Technical field
The present invention relates to the system and method for impurity in a kind of automatic detection bottling liquid, belong to optical instrument and field of optical measuring technologies.
Background technology
The ampoule bottle that uses clinically may be introduced impurity in links such as production and cans.The cilium that these impurity are normally tiny, hair, chips of glass and larger glass blocks etc.Studies show that cognition causes serious health problem if these impurity inject the people.If " Chinese pharmacopoeia explicitly calls for and contains diameter in the liquid and must detect and regard as substandard product greater than 50 microns impurity.
At present, domestic pharmacy corporation mainly adopts the manual detection method, namely judges whether to contain foreign matter by human eye under the particular light in the darkroom.This detection method intensity is large, subjectivity strong and easy flase drop.Part large enterprise has introduced external Full automatic intelligent lamp detector, also there are many colleges and universities and enterprise's development full automatic lamp detecting machine in China at present, external or the Full automatic intelligent lamp detector of domestic development all is to adopt machine vision method basically, namely judge whether to exist the detection method of impurity by take pictures continuously combining image analytical algorithm and processing and identification software of many high-speed industrial cameras, equipment cost based on the method is higher, image processing and identification software is complicated, the foreign matter discrimination relatively large to glass blocks etc. is not high, and safeguards inconvenient in the actual production.
Be the Chinese invention patent of CN1760666A such as publication number, this invention relates to a kind of method and system that can automatically detect solid impurity in the bottling liquid, the method is: drive unit drives the bottle that at the uniform velocity advances and accelerates from going to the setting tachometer value, then it is carried out fast braking, to its emission light beam, make a video recording with the video camera of its advanced in unison, image pickup signal is analyzed, when appearance is unusual, produce and reject signal.This system comprises testing platform, belt friction drive unit, pick-up unit, analysis and Control module etc., and the belt friction drive unit comprises driving wheel, engaged wheel, supporting roller and friction belt, is provided with spring on the support of supporting roller; Clamping device comprises clamping head and friction pulley; Friction pulley can with the friction belt rubbing contact.
And for example publication number is the Chinese invention patent of 101806752A, this disclosure of the Invention a kind of method and apparatus for bottled liquid medicine visible foreign matters vision-based detection, the method may further comprise the steps: 1) use industrial camera that the current liquid drug that is contained in the medicine bottle to be detected is obtained the multiframe consecutive image; 2) image pre-service: the circular shuttering of employing 7 * 7 carries out high cap morphologic filtering as structural element to the image that obtains; 3) moving target extracts; 4) motion target tracking; 5) image recognition and judgement.This device is comprised of image acquisition and the treating apparatus of the bottle catching mechanical hand that is used for the crawl medicine bottle and in its vicinity setting.
What above-mentioned two parts of patented technologies adopted all is machine vision method.
Summary of the invention
For defective of the prior art, the ray machine electric system and the method that the purpose of this invention is to provide the non-machine vision method of impurity in a kind of automatic detection bottling liquid, namely adopt multichannel light image simulation signal foreign matter detecting method, can detect efficiently the impurity foreign matter in the liquid, the binding signal disposal route, greatly improve the anti-interference of photosignal, thereby improve the recall rate of minute impurities foreign matter.
According to an aspect of the present invention, provide the system of impurity in a kind of automatic detection bottling liquid, this system comprises:
Traffic cycle for transmitting the fluid to be measured bottle, makes the fluid to be measured bottle from entering the inspection mouth to going out the inspection mouth;
The rotation small machine is used for driving the fluid to be measured bottle around self axis rotation;
Optical Transmit Unit provides the elongated strip light beam of a branch of high brightness vertically to penetrate detected fluid to be measured bottle;
The light receiving unit will be converged to picture through the light beam of fluid to be measured bottle, and survey intensity signal, carry out opto-electronic conversion, and the output intensity electric signal is to the electrical signal processing module;
Two servo-actuated turntables lay respectively at the outside and the inboard of traffic cycle, are used for fixed light transmitter unit, light receiving unit; Two servo-actuated turntables are followed the rear fast return that turns an angle synchronously of fluid to be measured bottle on the traffic cycle;
The electrical signal processing module, the photo-signal that the light receiving unit is exported converts voltage to, after amplification, analog to digital conversion, the digital quantity that converts to is sent to digital signal processing module again;
Digital signal processing module carries out filtering, analysis, calculating and judgement to the digital quantity that receives, and has judged whether that by the variation of analyzing light intensity signal impurity exists, and finally shows testing result.
Preferably, described Optical Transmit Unit is comprised of light source, lens, slit and cylindrical lens, be fixed in together servo-actuated turntable, the light that light source sends shines on the rectangular slit through collimated, obtain rectangular light beam through behind the slit, the cylindrical lens by the place ahead becomes a branch of very thin elongated strip light beam of high brightness vertically to penetrate detected fluid to be measured bottle the rectangle laser beam compression again.
Preferably, described Optical Transmit Unit further comprises optical fiber, and to optical fiber, the light of exporting through optical fiber shines on the rectangular slit through collimated the light that described light source sends through Lens Coupling.
Preferably, described smooth receiving unit is comprised of array lens and detector array, and the light beam that sees through the fluid to be measured bottle is imaged onto on the detector array via the array lens convergence.
Preferably, described electrical signal processing module is comprised of current-to-voltage convertor, amplifier, multidiameter option switch, analog to digital converter, wherein: current-to-voltage convertor is delivered to amplifier after converting the photocurrent of light receiving unit to voltage, amplifier is amplified to suitable value to signal and send analog to digital converter by multidiameter option switch, analog to digital converter is sent to digital signal processing module after converting analog voltage signal to digital quantity.
Preferably, described digital signal processing module adopts computing machine or single-chip microcomputer or DSP to realize.
According to a further aspect of the invention, provide the method for impurity in a kind of automatic detection bottling liquid, described method comprises the steps:
The first step, the fluid to be measured bottle is loaded onto circular traffic cycle successively by travelling belt, the speed uniform rotation that traffic cycle turns with the per minute number, enter before the detection zone, accelerate to rotarily drive the fluid to be measured bottle around self axis High Rotation Speed by adding speed motor, then braking adds speed motor and makes liquid bottles stop rotation, and liquid is because inertia still continues rotation;
Second step, Optical Transmit Unit and light receiving unit are installed on the servo-actuated turntable that is synchronized with the movement with traffic cycle, have identical rotating speed with traffic cycle or tested medicinal liquid bottle, keep synchronously, Optical Transmit Unit keeps relative static with light receiving unit and fluid to be measured bottle, continuous coverage this moment light intensity signal;
In the 3rd step, the light intensity signal that records is processed through electrical signal processing module and digital signal processing module, has judged whether that by the variation of analyzing light intensity signal impurity exists.
Preferably, described smooth radiating portion and light receiving portion are fixed on servo-actuated the turning, and servo-actuated turntable is followed the rear fast return that turns an angle synchronously of fluid to be measured bottle on the traffic cycle, then follows next fluid to be measured bottle and rotates synchronously, according to this repeatedly.
Preferably, the described light intensity signal that records is analyzed through electrical signal processing module and digital signal processing module processing, refer to: amplify after converting photocurrent to voltage, amplify and carry out analog to digital conversion, after converting analog voltage signal to digital quantity, be sent to computing machine or single-chip microcomputer or DSP, signal is done further filtering, analysis, calculating, judgement and demonstration.
Preferably, enter before the detection zone, accelerated to rotarily drive the fluid to be measured bottle around self axis High Rotation Speed by motor, rotating speed reaches 1000 rev/mins～4000 rev/mins, and then braking motor makes liquid bottles stop rotation, and liquid is because inertia still continues rotation.
Compared with prior art, the present invention has following beneficial effect: foreign matter detects the machine vision methods that adopt more in the conventional liquid, namely forming hardware system by many high-speed industrial video cameras makes a video recording continuously to liquid, identified by image processing and recognizer and software systems again and judge, the present invention compares with the machine vision method, greatly reduce equipment cost, simplified the software systems that foreign matter detects in the liquid, system is easier to safeguard.
Description of drawings
By reading the detailed description of non-limiting example being done with reference to the following drawings, it is more obvious that other features, objects and advantages of the present invention will become:
Fig. 1 be in one embodiment of the invention detection system overlook the light path synoptic diagram.
Among Fig. 1,1 is light source, and 2 is optical fiber, and 3 is lens, and 4 is slit, 5 cylindrical lenses, and 6 detected liquid bottles, 7 is array lens, 8 is detector array.
Fig. 2 is the side-looking light path synoptic diagram of detection system in one embodiment of the invention.
Among Fig. 2,1 is light source, and 2 is optical fiber, and 3 is lens, and 4 is slit, 5 cylindrical lenses, and 6 detected liquid bottles, 7 is array lens, and 8 is detector array, and 9 is traffic cycle.
Fig. 3 is the side-looking light path synoptic diagram of the non-fiber detection system of one embodiment of the invention.
Among Fig. 3,1 is light source, and 3 is lens, and 4 is slit, and 5 is cylindrical lens, 6 detected liquid bottles, and 7 is array lens, and 8 is detector array, and 9 is traffic cycle.
Fig. 4 is the Photoelectric Detection traffic cycle of one embodiment of the invention and follows the turntable synoptic diagram.
Among Fig. 4,6 are detected bottle, and 21 for being used for the servo-actuated turntable of fixed light transmitter unit, and 22 for being used for the servo-actuated turntable of fixed light receiving unit.
Fig. 5 is one embodiment of the invention computing machine and electrical signal processing module block diagram.
Among Fig. 5,10 is current-to-voltage convertor (I/V), and 11 is voltage amplifier, and 12 is multidiameter option switch, and 13 is analog to digital converter (A/D), and 14 is computing machine.
Fig. 6 is one embodiment of the invention single-chip microcomputer and electrical signal processing module block diagram.
Among Fig. 6,10 is current-to-voltage convertor (I/V), and 11 is voltage amplifier, and 12 is multidiameter option switch, 13 is analog to digital converter (A/D), and 15 is display screen, and 16 is button, and 17 is interface, 18 is battery, and 19 is digital signal processing module, and 20 is single-chip microcomputer.
The original signal waveform that contain cilium sample (through digital signal processing module do not process) of Fig. 7 for being recorded by the present invention.
The signal waveform that contain cilium sample (through digital signal processing module process) of Fig. 8 for being recorded by the present invention.
Embodiment
The present invention is described in detail below in conjunction with specific embodiment.Following examples will help those skilled in the art further to understand the present invention, but not limit in any form the present invention.Should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, can also make some distortion and improvement.These all belong to protection scope of the present invention.
Shown in Fig. 1-2, among the figure: 1 is light source, and 2 is optical fiber, and 3 is lens, and 4 is slit, 5 cylindrical lenses, and 6 detected liquid bottles, 7 is array lens, and 8 is detector array, and 9 is traffic cycle.The light that light source 1 sends arrives optical fiber 2 through Lens Coupling, light through optical fiber 2 outputs passes through lens 3 collimated illumination to rectangular slit 4, obtain rectangular light beam through behind the slit 4, cylindrical lens 5 by the place ahead becomes a branch of very thin elongated strip light beam of high brightness vertically to penetrate detected fluid to be measured bottle 6 the rectangle laser beam compression again, assembles via the array lens 7 in the place ahead through the light beam of fluid to be measured bottle to be imaged onto on the detector array 8.
Light source 1, optical fiber 2, lens 3, slit 4 and cylindrical lens 5 form Optical Transmit Unit, and Optical Transmit Unit is fixed on the servo-actuated turntable 21; Array lens 7 detector arrays 8 form the light receiving unit, and the light receiving unit is fixed on servo-actuated turntable 22.Traffic cycle 9 makes fluid to be measured bottle 6 from entering the inspection mouth to going out the inspection mouth for transmitting the fluid to be measured bottle; The rotation small machine is used for driving the fluid to be measured bottle around self axis rotation.
As shown in Figure 3, among the figure: 1 is light source, and 3 is lens, and 4 is slit, 5 cylindrical lenses, and 6 detected liquid bottles, 7 is array lens, and 8 is detector array, and 9 is traffic cycle.Optical Transmit Unit is comprised of light source 1, lens 3, slit 4 and cylindrical lens 5, light process lens 3 collimated illumination that light source 1 sends are to rectangular slit 4, obtain rectangular light beam through behind the slit 4, the cylindrical lens 5 by the place ahead becomes a branch of very thin elongated strip light beam of high brightness vertically to penetrate detected fluid to be measured bottle 6 the rectangle laser beam compression again.
The light receiving unit is comprised of array lens 7 and detector array 8, and the light beam that sees through fluid to be measured bottle 6 is imaged onto on the detector array 8 via array lens 7 convergences.
Described light source is halogen tungsten lamp, LED, laser, xenon lamp etc.
Described optical fiber is optical fibers, and material is glass or quartz or plastics etc., both can be splitting optical fiber not, also can be splitting optical fiber.
Described shape of slit is rectangle.
The matrix number of described array lens can be 1,2,3 ..., the random natural number of n both can be spliced by single or multiple single lens element, also can be formed by the stamping method integral manufacturing by mould, and material is quartz, glass, plastics etc.
Described fluid to be measured bottle is transparent or semitransparent vial, organic glass bottle or plastic bottle etc., and fluid to be measured is transparent or semitransparent or opaque liquid.
The matrix number of described detector array can be 1,2,3, the random natural number of n both can be formed by single or multiple photodiodes or photoelectric cell unit spliced, also can be linear array or face battle array photodiode array, linear array or area array CCD, cmos image sensor etc.
As shown in Figure 4, among the figure: 6 are detected bottle, and 21 for being used for the servo-actuated turntable of fixed light transmitter unit, and 22 for being used for the servo-actuated turntable of fixed light receiving unit; Servo-actuated turntable 21 and 22 is followed the rear fast return that turns an angle synchronously of fluid to be measured bottle 6 on the traffic cycle 9, then follows next fluid to be measured bottle and rotates synchronously, according to this repeatedly.
As shown in Figure 5, among the figure: 10 is current-to-voltage convertor (I/V), and 11 is voltage amplifier, and 12 is multidiameter option switch, and 13 is analog to digital converter (A/D), and 14 is computing machine.
As shown in Figure 6, among the figure: 10 is current-to-voltage convertor (I/V), and 11 is voltage amplifier, and 12 is multidiameter option switch, 13 is analog to digital converter (A/D), and 15 is display screen, and 16 is button, and 17 is interface, 18 is battery, and 19 is digital signal processing module, and 20 is single-chip microcomputer.
In order to realize automatic detection, the fluid to be measured bottle is loaded onto circular traffic cycle successively by travelling belt, the speed uniform rotation that traffic cycle turns with the per minute number, enter before the detection zone, accelerated to rotarily drive the fluid to be measured bottle around self axis High Rotation Speed by motor, rotating speed reaches 1000 rev/mins～4000 rev/mins, then braking motor makes liquid bottles stop rotation, and liquid is because inertia still continues rotation, optical detection part (comprising light emission and light receiving unit) is owing to be installed on the servo-actuated turntable that is synchronized with the movement with traffic cycle, thereby has identical rotating speed with traffic cycle (or tested medicinal liquid bottle), keep synchronously, optical detection part and fluid to be measured bottle keep relatively static, continuous coverage this moment light intensity signal has judged whether that by the variation of analyzing light intensity signal impurity exists.
Based on above-mentioned technical descriptioon, in certain embodiment, light source adopts halogen tungsten lamp, optical fiber adopts the one-to-two glass optical fiber, tested liquid bottles is 1ml dress ampoule injection liquor bottle, and the traffic cycle rotating speed is 5 rev/mins, and tested bottle rotation rotating speed is 1000 rev/mins, the original signal that contains the cilium sample that is recorded by the present invention (processing through digital signal processing module) as shown in Figure 7, the signal that contains the cilium sample after processing through signal processing module is as shown in Figure 8.Such as accompanying drawing 7 as seen, before not processing through digital signal processing module, the impurity signal that contains in the cilium sample can not be distinguished, be submerged in the noise, after digital signal processing module processing of the present invention, the impurity signal that contains in the cilium sample is obvious, as shown in Figure 8.
More than specific embodiments of the invention are described.It will be appreciated that the present invention is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or modification within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (10)
1. system that automatically detects impurity in the bottling liquid is characterized in that this system comprises:
Traffic cycle for transmitting the fluid to be measured bottle, makes the fluid to be measured bottle from entering the inspection mouth to going out the inspection mouth;
The rotation small machine is used for driving the fluid to be measured bottle around self axis rotation;
Optical Transmit Unit provides the elongated strip light beam of a branch of high brightness vertically to penetrate detected fluid to be measured bottle;
The light receiving unit will be converged to picture through the light beam of fluid to be measured bottle, and survey intensity signal, carry out opto-electronic conversion, and the output intensity electric signal is to the electrical signal processing module;
Two servo-actuated turntables lay respectively at the outside and the inboard of traffic cycle, are used for fixed light transmitter unit, light receiving unit; Two servo-actuated turntables are followed the rear fast return that turns an angle synchronously of fluid to be measured bottle on the traffic cycle;
The electrical signal processing module, the photo-signal that the light receiving unit is exported converts voltage to, after amplification, analog to digital conversion, the digital quantity that converts to is sent to digital signal processing module again;
Digital signal processing module carries out filtering, analysis, calculating and judgement to the digital quantity that receives, and has judged whether that by the variation of analyzing light intensity signal impurity exists, and finally shows testing result.
2. the system of impurity in the automatic detection bottling liquid according to claim 1, it is characterized in that, described Optical Transmit Unit is comprised of light source, lens, slit and cylindrical lens, the light that light source sends shines on the rectangular slit through collimated, obtain rectangular light beam through behind the slit, the cylindrical lens by the place ahead becomes a branch of very thin elongated strip light beam of high brightness vertically to penetrate detected fluid to be measured bottle the rectangle laser beam compression again.
3. the system of impurity in the automatic detection bottling liquid according to claim 2, it is characterized in that, described Optical Transmit Unit further comprises optical fiber, and to optical fiber, the light of exporting through optical fiber shines on the rectangular slit through collimated the light that described light source sends through Lens Coupling.
4. the system of impurity in the automatic detection bottling liquid according to claim 1, it is characterized in that, described smooth receiving unit is comprised of array lens and detector array, the light beam that sees through the fluid to be measured bottle is imaged onto on the detector array via the array lens convergence, detector output intensity information, the array number of array lens and detector array is one or more.
5. the system of impurity in each described automatic detection bottling liquid according to claim 1-4, it is characterized in that, described electrical signal processing module is comprised of current-to-voltage convertor, amplifier, multidiameter option switch, analog to digital converter, wherein: current-to-voltage convertor is delivered to amplifier after converting the photocurrent of light receiving unit to voltage, amplifier is amplified to suitable value to signal and send analog to digital converter by multidiameter option switch, analog to digital converter is sent to digital signal processing module after converting analog voltage signal to digital quantity.
6. the system of impurity in each described automatic detection bottling liquid is characterized in that according to claim 1-4, and described digital signal processing module adopts computing machine or single-chip microcomputer or DSP to realize.
7. a method that adopts impurity in the automatic detection bottling liquid that the described system of claim 1-6 carries out is characterized in that described method comprises the steps:
The first step, the fluid to be measured bottle is loaded onto circular traffic cycle successively by travelling belt, the speed uniform rotation that traffic cycle turns with the per minute number, the fluid to be measured bottle enters before the detection zone, accelerated to rotarily drive the fluid to be measured bottle around self axis High Rotation Speed by motor, then braking motor makes liquid bottles stop rotation, and liquid is because inertia still continues rotation;
Second step, Optical Transmit Unit and light receiving unit are installed in traffic cycle and are synchronized with the movement on the servo-actuated turntable of fast return behind the certain angle, when servo-actuated turntable and traffic cycle keep being synchronized with the movement, Optical Transmit Unit keeps relative static with light receiving unit and fluid to be measured bottle, continuous coverage this moment light intensity signal;
The 3rd step, the light intensity signal that records is processed through electrical signal processing module and digital signal processing module, judged whether that by the variation of analyzing light intensity signal impurity exists.
8. the method for impurity in the automatic detection bottling liquid according to claim 7, it is characterized in that, the described light intensity signal that records is processed through electrical signal processing module and digital signal processing module, refer to: amplify after converting photocurrent to voltage, amplify and carry out analog to digital conversion, after converting analog voltage signal to digital quantity, be sent to computing machine or single-chip microcomputer or DSP, signal is done further filtering, analysis, calculating, judgement and demonstration.
9. the method for impurity in the automatic detection bottling liquid according to claim 7, it is characterized in that, described smooth radiating portion and light receiving portion are fixed on the servo-actuated turntable, servo-actuated turntable is followed the rear fast return that turns an angle synchronously of fluid to be measured bottle on the traffic cycle, then follow next fluid to be measured bottle and rotate synchronously, according to this repeatedly.
10. the method for impurity in the automatic detection bottling liquid according to claim 7 is characterized in that described fluid to be measured bottle is around self axis High Rotation Speed, and rotating speed is 1000～4000r/m.
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Cited By (3)
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|---|---|---|---|---|
| CN105424572A (en) * | 2015-12-23 | 2016-03-23 | 电子科技大学 | On-line detector for particle impurities in transformer oil |
| CN105445280A (en) * | 2015-12-03 | 2016-03-30 | 楚天科技股份有限公司 | Bottle laser detecting method |
| CN113491400A (en) * | 2020-04-03 | 2021-10-12 | 合肥华凌股份有限公司 | Partition plate assembly and storage cabinet |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105445280A (en) * | 2015-12-03 | 2016-03-30 | 楚天科技股份有限公司 | Bottle laser detecting method |
| CN105445280B (en) * | 2015-12-03 | 2018-08-21 | 楚天科技股份有限公司 | A kind of bottle laser detecting method |
| CN105424572A (en) * | 2015-12-23 | 2016-03-23 | 电子科技大学 | On-line detector for particle impurities in transformer oil |
| CN113491400A (en) * | 2020-04-03 | 2021-10-12 | 合肥华凌股份有限公司 | Partition plate assembly and storage cabinet |
| CN113491400B (en) * | 2020-04-03 | 2023-01-31 | 合肥华凌股份有限公司 | Partition plate assembly and storage cabinet |
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| CN102914547B (en) | 2015-04-22 |
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