CN110252034A - Biological 3D printing toilet bacterium degree control and monitoring system - Google Patents
Biological 3D printing toilet bacterium degree control and monitoring system Download PDFInfo
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- CN110252034A CN110252034A CN201910390770.4A CN201910390770A CN110252034A CN 110252034 A CN110252034 A CN 110252034A CN 201910390770 A CN201910390770 A CN 201910390770A CN 110252034 A CN110252034 A CN 110252034A
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- 241000894006 Bacteria Species 0.000 title claims abstract description 27
- 238000012544 monitoring process Methods 0.000 title claims abstract description 25
- 238000010146 3D printing Methods 0.000 title claims abstract description 24
- 238000001914 filtration Methods 0.000 claims abstract description 37
- 230000001954 sterilising effect Effects 0.000 claims abstract description 27
- 238000007789 sealing Methods 0.000 claims abstract description 26
- 238000012706 support-vector machine Methods 0.000 claims abstract description 17
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 15
- 238000005339 levitation Methods 0.000 claims abstract description 9
- 230000000249 desinfective effect Effects 0.000 claims abstract 2
- 230000000694 effects Effects 0.000 claims description 20
- 239000002245 particle Substances 0.000 claims description 16
- 238000012549 training Methods 0.000 claims description 16
- 239000000725 suspension Substances 0.000 claims description 11
- 239000011888 foil Substances 0.000 claims description 8
- 230000000977 initiatory effect Effects 0.000 claims description 6
- 230000000844 anti-bacterial effect Effects 0.000 claims description 4
- 239000011159 matrix material Substances 0.000 claims description 3
- 230000017105 transposition Effects 0.000 claims description 3
- 241000233866 Fungi Species 0.000 claims description 2
- 239000002775 capsule Substances 0.000 claims 1
- 238000000034 method Methods 0.000 description 7
- 238000007639 printing Methods 0.000 description 7
- 238000013461 design Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 244000005700 microbiome Species 0.000 description 4
- 230000001580 bacterial effect Effects 0.000 description 3
- 239000012620 biological material Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 241000606161 Chlamydia Species 0.000 description 2
- 241000711573 Coronaviridae Species 0.000 description 2
- 241000726221 Gemma Species 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 241000446313 Lamella Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000035479 physiological effects, processes and functions Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
- A61L9/18—Radiation
- A61L9/20—Ultraviolet radiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/4236—Reducing noise or vibration emissions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/44—Auxiliary equipment or operation thereof controlling filtration
- B01D46/448—Auxiliary equipment or operation thereof controlling filtration by temperature measuring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
- B01D46/62—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F18/00—Pattern recognition
- G06F18/20—Analysing
- G06F18/24—Classification techniques
- G06F18/241—Classification techniques relating to the classification model, e.g. parametric or non-parametric approaches
- G06F18/2411—Classification techniques relating to the classification model, e.g. parametric or non-parametric approaches based on the proximity to a decision surface, e.g. support vector machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/06—Polluted air
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- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Chemical & Material Sciences (AREA)
- Theoretical Computer Science (AREA)
- Data Mining & Analysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Bioinformatics & Computational Biology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Evolutionary Biology (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Evolutionary Computation (AREA)
- Artificial Intelligence (AREA)
- Epidemiology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Apparatus For Disinfection Or Sterilisation (AREA)
Abstract
The invention discloses the control of biological 3D printing toilet bacterium degree and monitoring system, this system is able to solve the problem of existing biological 3D printing toilet sealability difference, and gets rid of the dependence to Biohazard Safety Equipment, while toilet inside bacterium degree is monitored and being assessed.It is implemented with the following technical solutions: biological 3D printing toilet bacterium degree control and monitoring system, including sterilization system, monitoring system and the sealing system being set at toilet's hatch door being set to inside toilet, the sterilization system includes air filter and disinfecting device；The air filter uses FFU blower fan filtering unit, disinfector selects wave-length coverage in the C wave ultraviolet sterilizing lamp of 200-275nm, the monitoring system includes laser levitation corpuscular counter and support vector machines, and the sealing system is inflatable seal system.
Description
Technical field
The present invention relates to the controls of biological 3D printing toilet bacterium degree and monitoring system, belong to biological 3D printing equipment and technology neck
Domain.
Background technique
Biological 3D printing is application of the 3D printing technique in field of biomedicine, by 3D printing technique and medicine, biological material
Material and computer technology combine, and make 3D model for the specific anatomic construction of patient, physiology.Biological 3D printer is a kind of energy
It is enough to be positioned according to increasing material manufacturing principle under digital three-dimensional model driving and assemble biomaterial or cell factory, manufacture Medical treatment device
The equipment of tool, tissue engineering bracket and organizer official rank product, by reading in the three-dimensional rebuild by medical image data or designed
Model is separated into multiple lamellas by model, and computer control printing head successively prints biomaterial or cell, until having printed
At.
Due to the particularity of biological 3D printing, the printing environment of cleaning sterile is needed, however at present for biological 3D printing
The optimization of machine environment, mostly all just for the filtering of toilet's inner air and Temperature and Humidity Control, for the seal operation of toilet
It is only realized by sealing strip, it is difficult to reach ideal sealing effect, and with the increase of number of use, sealing strip meeting
It gradually loosens, it is more likely that the entrance in print procedure due to outside air causes toilet to be contaminated, and far can not
Meet precision demand when biological 3D printer prints to printing environment.
Summary of the invention
The present invention overcomes above-mentioned the deficiencies in the prior art, provides biological 3D printing toilet bacterium degree control with monitoring and is
System, this system are able to solve the problem of existing biological 3D printing toilet sealability difference, and get rid of to Biohazard Safety Equipment
It relies on, while toilet inside bacterium degree is monitored and is assessed.
The present invention is implemented with the following technical solutions:
Biological 3D printing toilet bacterium degree control and monitoring system, including sterilization system, the prison being set to inside toilet
Examining system and the sealing system being set at toilet's hatch door, the sterilization system include air filter and disinfection and sterilization dress
It sets；
The air filter uses FFU blower fan filtering unit, and FFU blower fan filtering unit is centrifuged wind using outer rotor
Machine is equipped with first, efficient two-stage fan filter.Blower draws air at the top of blower fan filtering unit and through first, air-foil fan
Filter filtering.The air outlet of FFU blower fan filtering unit is connected with the air inlet of toilet, the air inlet of filter bank with it is clean
The gas outlet of clean room is connected to, and achievees the effect that interior circulation, to be filtered to toilet's inner air；The sterilization dress
It sets and is mounted on above toilet；
The disinfector selects wave-length coverage in the C wave ultraviolet sterilizing lamp of 200-275nm, is mounted on toilet
Top carries out comprehensive sterilization to toilet inside；Wherein, the strongest wave band of bactericidal effect is 250-270nm, therefore is selected
C wave ultraviolet sterilizing lamp be capable of effectively easy kill include bacterial propagule, gemma, mycobacteria, coronavirus, fungi,
The microorganisms such as Richettsia and Chlamydia；
The monitoring system includes the laser levitation corpuscular counter being mounted on toilet's tank wall and support vector machines, institute
Support vector machines is stated to classify to laser levitation corpuscular counter acquisition gas suspension particle value of making the return trip empty；
The sealing system is inflatable seal system, including outline border, door-plate and air bag, and door-plate is arranged in the outline border,
The door-plate is connected by a hinge with outline border, and the outline border corner is round and smooth, and inside is provided with U-type groove, and the U-type groove, which is embedded in, to be set
Air bag is set, for the air bag between outline border and door-plate, the air bag connects air pump by snorkel, also sets up on the air bag
There is exhaust valve.
Specifically, the group section that the FFU blower fan filtering unit includes has sequentially connected initial effect filtering section, warm and humid control
Section, fan section, muffler section, reserved section, high efficiency filter section and air supply section, the warm and humid control section include preheating section, precooling zone, add
Wet section, cold section again, hot arc again, fan section use outer-rotor centrifugal fan, and initial effect filtering section and high efficiency filter section are respectively set just
Imitate fan filter and air-foil fan filter.
The cost function J (θ) of the support vector machines are as follows:
Wherein, C is iotazation constant, and i is i-th of training sample, and m is training samples number, and n is characterized quantity, and θ is instruction
Practice weight, x is sample input, and y is sample output, x(i)It is inputted for i-th of sample, y(i)It is exported for i-th of sample；θTFor θ square
The transposition of battle array, cost1For the cost function as y=1, being evolved by logistic algorithm；cost0For as y=0, by
The cost function that logistic algorithm is evolved；J is j-th of characteristic value,For regular terms；
Gauss RBF kernel function is as follows:
Wherein, l is the new feature of definition, and σ is the parameter of gaussian kernel function, and x is sample input, and f is the pre- of input sample
Survey output, when the training sample x of the input and new feature l of definition apart from it is close when, | | x-l | |2Value level off to 0, and σ is Gauss
Kernel functional parameter is a determining value, so when f value level off to 1, situation prediction output y=1；When the training sample of input
This x and new feature l of definition apart from it is remote when, | | x-l | |2Level off to it is infinite, so when f value level off to 0, situation prediction output
Y=0.
Compared with prior art, the beneficial effects of the present invention are:
Toilet of the present invention: 1) air filtration structure uses inner circulation structure, interferes from outside air.
2) sterilizing structure is capable of the kill of effective simplicity using wave-length coverage in the C wave ultraviolet sterilizing lamp of 200-275nm
The microorganisms such as bacterium.
3) dependence to Biohazard Safety Equipment is got rid of.
4) bacterium degree monitoring system is added, reality can reach by the cooperating of suspended particles counter and support vector machines
When monitoring toilet inside bacterium degree effect.
5) device uses inflatable airbag sealing strip, and the conventional seals item before replacing improves sealing effect, also not
Sealing performance can be reduced with the increase of access times.
6) by the control of air pump and exhaust valve, it both ensure that the sealing effect in printing, it will not be in the door that opens the cabin
Shi Zaocheng door-plate bite or air bag damage.
7) the round and smooth design of four corners of toilet's outline border and doorframe and the design of the U-type groove of toilet's outline border, more favorably
Sealing effect after being inflated with air bag.
8) the hinge connection of the front door and outline border of substitution, is changed to hinge component connection, the seam that will not be connected because of the two
Gap reduces sealing effect.
Detailed description of the invention
Fig. 1 is structural schematic diagram (being not drawn into internal component) when toilet's hatch door is closed；
Fig. 2 is side view cutaway drawing when toilet's hatch door is closed；
Fig. 3 is top cross-sectional view when toilet's hatch door is closed；
Fig. 4 is top cross-sectional view when toilet's hatch door is opened.
Fig. 5 is FFU blower fan filtering unit each group section schematic diagram；
Fig. 6 is that FFU blower fan filtering unit and clean room air recycle schematic diagram；
Fig. 7 is FFU blower fan filtering unit and fresh air system attachment structure schematic diagram.
The meaning of appended drawing reference: 1- outline border, 2- door-plate, 3- hinge, 4- exhaust valve, 5- air bag, 6- door handle, 7- air pump,
8- snorkel, 9-C wave ultraviolet sterilizing lamp, 10-FFU blower fan filtering unit, 11- laser levitation corpuscular counter, 12- were just imitated
Filter section, the warm and humid control section of 13-, 14- fan section, 15- muffler section, 16- reserved section, 17- high efficiency filter section, 19- Chess slab,
20- return air vertical shaft, 21- Fresh air handling units, 22- supply fan room, 23- raised floor with holes, 24- furred ceiling plenum chamber, 25- air outlet,
26- air inlet, the toilet 30-.
Specific embodiment
The present invention will be further described with attached drawing with reference to embodiments:
Biological 3D printing toilet bacterium degree control and monitoring system, including sterilization system, the prison being set to inside toilet
Examining system and the sealing system being set at toilet's hatch door, the sterilization system include air filter and disinfection and sterilization dress
It sets；
The air filter uses FFU blower fan filtering unit, and the air outlet of filter bank passes through air duct and toilet
Air inlet be connected, the air inlet of filter bank is connected to the gas outlet of toilet, achievees the effect that interior circulation, thus to clean
Clean room inner air is filtered, and is interfered from outside air；
The air outlet 25 of FFU blower fan filtering unit is connected with the air inlet of toilet, the air inlet of blower fan filtering unit
26 are connected to the gas outlet of toilet, to achieve the effect that interior circulation.As shown in Figure 6.
The blower of FFU blower fan filtering unit uses outer-rotor centrifugal fan, is equipped with first, efficient two-stage fan filter.Wind
Machine draws air at the top of fan filter unit and through first, air-foil fan filter filtering.Using outer-rotor centrifugal fan,
With performance stabilization, the long-life, low noise, non-maintaining, vibration is small, can the characteristics such as stepless speed regulation, obtained suitable for various environment
Obtain the clean environment of higher level.
Specifically, as shown in figure 5, the group section that FFU blower fan filtering unit includes has sequentially connected initial effect filtering section 12, temperature
Wet control section 13, fan section 14, muffler section 15, reserved section 16, high efficiency filter section 17 and air supply section, the warm and humid control section 13 are wrapped
Preheating section, precooling zone, humidifier section, cold section again, hot arc again are included, fan section uses outer-rotor centrifugal fan, 12 He of initial effect filtering section
Just effect fan filter and air-foil fan filter is respectively set in high efficiency filter section 17, and air is by FFU blower fan filtering unit institute band
Air-foil fan filter be filtered reach clean and require after be sent into toilet.
The air supply section include Chess slab 19, return air vertical shaft 20, Fresh air handling units 21, supply fan room 22, it is with holes overheadly
Plate 23 and furred ceiling plenum chamber 24, the air inlet of FFU blower fan filtering unit pass through the return air vertical shaft 20 of Chess slab 19 and two sides, lead to
It crosses and is mixed with the fresh air of the processing of Fresh air handling units 21, returned to after supply fan room 22 carries out antistatic process with raised floor 23 with holes
Furred ceiling plenum chamber 24, the furred ceiling plenum chamber connect initial effect filtering section 12.
Since clean room pressure is higher than the pressure in plenum chamber, therefore penetrated into there is no dust particle by furred ceiling plenum chamber
A possibility that inside toilet, fundamentally solve the problems, such as that suspended particles penetrate into toilet.Concrete structure schematic diagram
As shown in Figure 7.
Wherein, precooling zone, cold section again, preheating section, again hot arc pass through coil heat exchange realize, precooling zone, cold section again, preheating
Section, the supply and return water temperature of hot arc is as shown in table 1 again:
Table 1
| Precooling zone | Cold section again | Preheating section | Hot arc again | |
| Supply water temperature | 10-20℃ | 4-10℃ | 80-100℃ | 80-100℃ |
| Return water temperature | 16-26℃ | 10-15℃ | 50-70℃ | 60-80℃ |
Preferably, the supply and return water temperature of desuperheating coil is 13 DEG C/19 DEG C, then the supply and return water temperature of cold and coil pipe be 5 DEG C/
10.6 DEG C, 90 DEG C/60 DEG C of supply and return water temperature of coil pipe are preheated, then the supply and return water temperature of hot coil is 90 DEG C/70 DEG C.
The disinfector selects wave-length coverage in the C wave ultraviolet sterilizing lamp of 200~275nm, is mounted on cleaning
Above room, comprehensive sterilization is carried out to toilet inside；Wherein, the strongest wave band of bactericidal effect is 250~270nm, therefore
Select C wave ultraviolet sterilizing lamp be capable of effectively easy kill include bacterial propagule, it is gemma, mycobacteria, coronavirus, true
The microorganisms such as bacterium, Richettsia and Chlamydia；
The monitoring system includes the laser levitation corpuscular counter being mounted on toilet's tank wall and support vector machines, institute
Support vector machines is stated to classify to laser levitation corpuscular counter acquisition gas suspension particle value of making the return trip empty；
The sealing system is inflatable seal system, including outline border 1, door-plate 2 and air bag 5, and door is arranged in the outline border 1
Plate 2, the door-plate 2 are connect with outline border 1 by hinge 3, and 3 one, hinge affixed with toilet's door-plate 2, outside other end and toilet
Frame 1 is hinged.
1 four corners of the outline border are round and smooth, and inside is provided with U-type groove, and the U-type groove is embedded in setting air bag 5, described
For air bag 5 between outline border and door-plate, the air bag 5 connects air pump 7 by snorkel 8, is additionally provided with exhaust on the air bag 5
Valve 4.After the closure of door-plate 2, is inflated to air bag 5, make the gap sealing between door-plate and doorframe, so as to improve the sealing of toilet
Problem.
The round and smooth design of four corners of toilet's doorframe and the U-type groove design of toilet's outline border, are had and are inflated using air bag
Sealing effect afterwards.
When ready-to-print, toilet's hatch door is closed, the external air pump of air bag in outline border U-type groove, by air pump to air bag
Inflation, makes thoroughly to seal between door-plate and doorframe, then carries out the preparations such as internal air filtration and sterilizing again.
After being fully sealed, toilet's inner air is drawn into FFU blower fan filtering unit 10 by blower by air inlet, passes through
The filtering of air-foil fan filter, filtered pure air are uniformly sent out, and C wave ultraviolet sterilizing lamp 9 carries out exterminating bacterium, then
It is secondary to enter air duct, it is drawn air into toilet by the blower of air inlet, forms circulation in the pure air in printing environment.
Laser levitation corpuscular counter 11 acquires the suspended particles inside toilet in real time, the sky that will be collected
Gas suspension particle value is input in the trained support vector machines to perfection fitting, so as to judge clean room air
Whether bacterial concentration meets biological 3D printing standard, realizes on-line real time monitoring.
After printing, exhaust valve 4 is opened, and gas in air bag 5 is discharged, is reserved properly to the overturning of toilet's hatch door 2
Gap, not will cause the damage of the bite or air bag 5 of toilet's hatch door 2.
When air bag is in inflated condition, it can be charged in toilet's outline border U-type groove and just fill up entire U-type groove, and with
It is thoroughly sealed between toilet's hatch door.Work as air bags, when exhaust valve gas in air bag can be completely drawn out, air bag is in minimum
State, in U-type groove, to reserve the effect of appropriate clearance to the overturning of toilet's hatch door.
Compared with traditional toilet's sterilization technology, have the advantage that
1) air filtration structure uses inner circulation structure, interferes from outside air.
2) sterilizing structure is capable of the kill of effective simplicity using wave-length coverage in the C wave ultraviolet sterilizing lamp of 200-275nm
The microorganisms such as bacterium.
3) dependence to Biohazard Safety Equipment is got rid of.
4) bacterium degree monitoring system is added, reality can reach by the cooperating of suspended particles counter and support vector machines
When monitoring toilet inside bacterium degree effect.
5) device uses inflatable airbag sealing strip, and the conventional seals item before replacing improves sealing effect, also not
Sealing performance can be reduced with the increase of access times.
6) by the control of air pump and exhaust valve, it both ensure that the sealing effect in printing, it will not be in the door that opens the cabin
Shi Zaocheng door-plate bite or air bag damage.
7) the round and smooth design of four corners of toilet's outline border and doorframe and the design of the U-type groove of toilet's outline border, more favorably
Sealing effect after being inflated with air bag.
8) the hinge connection of the front door and outline border of substitution, is changed to hinge component connection, the seam that will not be connected because of the two
Gap reduces sealing effect.
The cost function J (θ) of the support vector machines are as follows:
Wherein, C is iotazation constant, and i is i-th of training sample, and m is training samples number, and n is characterized quantity, and θ is instruction
Practice weight, x is sample input, and y is sample output, x(i)It is inputted for i-th of sample, y(i)It is exported for i-th of sample；θTFor θ square
The transposition of battle array, cost1For the cost function as y=1, being evolved by logistic algorithm；cost0For as y=0, by
The cost function that logistic algorithm is evolved；J is j-th of characteristic value,For regular terms, can prevent from going out in fit procedure
The case where existing high deviation or high variance；
Gauss RBF kernel function is as follows:
Wherein, l is the new feature of definition, and σ is the parameter of gaussian kernel function, and x is sample input, and f is the pre- of input sample
Survey output, when the training sample x of the input and new feature l of definition apart from it is close when, | | x-l | |2Value level off to 0, and σ is Gauss
Kernel functional parameter is a determining value, so when f value level off to 1, situation prediction output y=1；When the training sample of input
This x and new feature l of definition apart from it is remote when, | | x-l | |2Level off to it is infinite, so when f value level off to 0, situation prediction output
Y=0.
In specific implementation process, before training, needs to collect a large amount of air suspension particle value sample, both needed clean
Air suspension particle value sample when bacterium degree is up to standard in clean room, it is also desirable to air suspension particle value sample when having not up to standard.It will
It is divided into training set, verifies collection and three groups of test set, is then inputted in support vector machines and is trained, generation can be made by fitting
The matrix of θ value when valence function J (θ) is preferably minimized.Be trained by support vector machines, find out bacterium degree it is up to standard with it is not up to standard when
Air suspension number of particles decision boundary, bacterium degree in toilet can be monitored and be assessed after fitting.
Since the cost function of support vector machines is convex function, the case where without considering local optimum, so directly finding out
After capable of making the smallest θ matrix of J (θ), substituted into gaussian kernel function.
Gaussian kernel function be in order to solve fitting after hypothesis function there is higher order polynomial, can not be best to training
The case where sample is fitted；Simultaneously in order to accelerate arithmetic speed, before gaussian kernel function operation, it is necessary first to define new spy
Value indicative l, it is assumed that three points are defined, then being directed to a point xiTo l1、l2、l3The distance of three points, if l1、l2It is positive sample,
So xiCloser from the two points, it should be higher for representing the probability of final y=1；, whereas if far from the two points, then
It should be higher for representing the probability of y=0.Then the air suspension particle value that we newly collect is input to Gaussian kernel letter
In number, θ is judgedTThe value of f, if θTThe value of f is greater than 0, then predicts y=1, i.e. air suspension particle value is up to standard；Otherwise y=is predicted
0, i.e. gas suspension particle value is not up to standard.
In the application of biological 3D printing, due to feature vector very little, so support vector machines kernel function chooses Gauss
(RBF) kernel function can achieve optimal fitting effect.Meanwhile classification problem is handled with support vector machines (SVM), have following
Advantage:
1), sparsity, i.e., a small amount of sample are obtained with preferable classifying quality.
2), theoretical perfect, there is the theory of a set of almost Perfect that can explain its principle.
3) best decision boundary, is always selected.
4) no probability value, is exported, only can export 0 and 1, it is simple and clear.
5), arithmetic speed is fast.
The basic principles, main features and advantages of the present invention have been shown and described above, description more has
Body is in detail, and but it cannot be understood as limitations on the scope of the patent of the present invention.It should be pointed out that for this field
For those of ordinary skill, without departing from the inventive concept of the premise, various modifications and improvements can be made, these all belong to
In protection scope of the present invention.
Claims (6)
1. biological 3D printing toilet's bacterium degree control and monitoring system, which is characterized in that including being set to removing inside toilet
Fungus strain system, monitoring system and the sealing system being set at toilet's hatch door, the sterilization system include air filter and
Disinfecting device；
The air filter uses FFU blower fan filtering unit, and FFU blower fan filtering unit uses outer-rotor centrifugal fan, if
There is first, efficient two-stage fan filter；Blower draws air at the top of blower fan filtering unit and through first, air-foil fan filter
Filtering, the air outlet of FFU blower fan filtering unit is connected with the air inlet of toilet, the air inlet of filter bank and toilet
Gas outlet connection, achievees the effect that interior circulation, to be filtered to toilet's inner air；
The disinfector is mounted on above toilet；
The monitoring system includes the laser levitation corpuscular counter being mounted on toilet's tank wall and support vector machines, the branch
Vector machine is held to classify to laser levitation corpuscular counter acquisition gas suspension particle value of making the return trip empty；
The sealing system is inflatable seal system, including outline border, door-plate and air bag, and door-plate is arranged in the outline border, described
Door-plate is connected by a hinge with outline border, and the outline border corner is round and smooth, and inside is provided with U-type groove, and the U-type groove is embedded in setting gas
Capsule, for the air bag between outline border and door-plate, the air bag connects air pump, the row of being additionally provided on the air bag by snorkel
Air valve.
2. biology 3D printing toilet's bacterium degree control according to claim 1 and monitoring system, which is characterized in that described
The group section that FFU blower fan filtering unit includes has sequentially connected initial effect filtering section, warm and humid control section, fan section, muffler section, reserves
Section, high efficiency filter section and air supply section.
3. biology 3D printing toilet's bacterium degree control according to claim 2 and monitoring system, which is characterized in that the temperature
Wet control section includes preheating section, precooling zone, humidifier section, cold section again, hot arc again, and fan section uses outer-rotor centrifugal fan, just imitates
Just effect fan filter and air-foil fan filter is respectively set in fillter section and high efficiency filter section.
4. biology 3D printing toilet's bacterium degree control according to claim 1 and monitoring system, which is characterized in that described to disappear
Malicious bactericidal unit selects wave-length coverage in the C wave ultraviolet sterilizing lamp of 200~275nm.
5. biology 3D printing toilet's bacterium degree control according to claim 4 and monitoring system, which is characterized in that described to disappear
Malicious bactericidal unit selects wave-length coverage in the C wave ultraviolet sterilizing lamp of 250~270nm.
6. biology 3D printing toilet's bacterium degree control according to claim 1 and monitoring system, which is characterized in that the branch
Hold the cost function J (θ) of vector machine are as follows:
Wherein, C is iotazation constant, and i is i-th of training sample, and m is training samples number, and n is characterized quantity, and θ is training power
Weight, x are sample input, and y is sample output, x(i)It is inputted for i-th of sample, y(i)It is exported for i-th of sample；θTFor θ matrix
Transposition；cost1For the cost function as y=1, being evolved by logistic algorithm；cost0For as y=0, by
The cost function that logistic algorithm is evolved；J is j-th of characteristic value,For regular terms；
Gauss RBF kernel function is as follows:
Wherein, l is the new feature of definition, and σ is the parameter of gaussian kernel function, and x is sample input, and f is that the prediction of input sample is defeated
Out, when the training sample x of the input and new feature l of definition apart from it is close when, | | x-l | |2Value level off to 0, and σ is Gaussian kernel letter
Number parameters, are a determining values, so when f value level off to 1, situation prediction output y=1；When input training sample x with
The new feature l of definition apart from it is remote when, | | x-l | |2Level off to it is infinite, so when f value level off to 0, situation prediction output y=0.
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Effective date of registration: 20240503 Address after: Room 703, Building 1, No. 430 Miaoqiao Road, Pudong New Area, Shanghai, 201315 Patentee after: Lanbaotai (Shanghai) Biopharmaceutical Co.,Ltd. Country or region after: China Address before: 030024 No. 79 West Main Street, Taiyuan, Shanxi, Yingze Patentee before: Taiyuan University of Technology Country or region before: China |