CN106289887A - A kind of bionical method of sampling respiration of Electronic Nose - Google Patents
A kind of bionical method of sampling respiration of Electronic Nose Download PDFInfo
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- CN106289887A CN106289887A CN201610662961.8A CN201610662961A CN106289887A CN 106289887 A CN106289887 A CN 106289887A CN 201610662961 A CN201610662961 A CN 201610662961A CN 106289887 A CN106289887 A CN 106289887A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/24—Suction devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
- G01N1/2205—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling with filters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N2001/2244—Exhaled gas, e.g. alcohol detecting
Abstract
The present invention relates to a kind of bionical method of sampling respiration of Electronic Nose, a complete sample cyclic comprises 3 sample cyclic, and step is as follows: first circulation of sampling starts, and first electromagnetic valve for adjusting is connected and sucked sampling gas circuit；Opening the suction sampling element that adjustable speed air pump starts to circulate for the first time, duration of ventilation is 1 second；Make evaporation air chamber and sensor air chamber separate and airtight, 15 seconds waiting time；Starting the exhalation link of circulation for the first time, make evaporation air chamber connect with sensor air chamber, open adjustable speed air pump and start to breathe out sample for the first time, duration of ventilation is 4 seconds；Closing adjustable speed air pump, and simultaneously close off path between electromagnetic valve, make evaporation air chamber and sensor air chamber separate and airtight, wait that sensor reaches new stable state, first breath sample cyclic terminates；Second and third time circulating sampling process substantially with circulate for the first time identical, parameter is different.The present invention can realize the quick sampling of Electronic Nose.
Description
Technical field
The invention belongs to instrument and fields of measurement, be specifically related to the bionical method of sampling respiration of Electronic Nose of a kind of novelty.
Background technology
Electronic Nose, also known as Artificial Olfactory, be a kind of modern bionical detecting instrument, and it can simulating human and suckling
The structure of animal olfactory system and function, it is achieved the detection identification to simple or complicated abnormal smells from the patient.Electronic Nose generally includes gas
Sensor array, information pre-processing and pattern recognition three parts.At present, Electronic Nose Technology have been widely used food safety,
The every field such as quality control, environmental monitoring and medical diagnosis on disease.When detection by electronic nose sample, volatile flavor need to be with multiple gas
The array reaction of dependent sensor composition, is converted into the signal of telecommunication by the chemical signal of sample, is then passed through a series of signal conditioning, returns
The preprocessing process such as one change, obtain comprehensive " fingerprint " information corresponding to this sample, then (feature are raw therefrom to extract suitable feature
Become, feature selection, feature extraction) it is input to specific algorithm for pattern recognition, it is finally completed the qualitative or quantitative identification to sample.
Therefore, for Electronic Nose Technology, the collection of sample and measurement are matters of utmost importance.
Owing to the response characteristic of gas sensor is easily affected by external environment, therefore to ensure Electronic Nose test can
By property and repeatability, Electronic Nose typically requires one suitable air chamber (test chamber) of design and is used for accommodating gas sensor battle array
Row.And the sampling of gas sample is referred to by Electronic Nose designs the suitable method of sampling exactly, by gas sample band air inlet chamber with
The process that sensor array fully reacts.In Electronic Nose, the method for sampling generally used has two big classes: Static Sampling side
Method and dynamic sampling method.
Static Sampling is to be injected in cavity by sample gas, along with the diffusion of gas (can use fan to accelerate to expand
Dissipate) make sensor array capture gas molecule and react and obtain signal.Static Sampling method is simple, electricity in early days
Sub-nose test mode is all to use static method test.But, owing in Static Sampling, sampling cavity and test chamber are integrated, therefore body
Long-pending relatively big, sample gas diffusion process is relatively slower, it is generally required to a period of time gas molecule just can ring with sensor
Should.And concentration skewness in incipient stage test chamber, for the repeatability of ascent stage in sensor response curve
Relatively low.Further, since whole cavity volume is bigger, clean test chamber the most very time consumption and energy consumption every time.Therefore, the method is inapplicable
In the electric nasus system of the actual application such as quick response.Patent No. CN103558252A achieves a kind of based on Electronic Nose Technology
Wine sorting technique, wherein have employed Static Sampling method.
Dynamic sampling is different from Static Sampling, and it needs to bring sample gas into test chamber by carrier gas and tests, whole
Individual test process gas is flowing.The air of carrier gas generally cleaning or nitrogen, power can be provided by air pump.Dynamic sampling is pressed
Can be divided into again according to different sampling policies: Static Headspace method, Dynamic headspace method and mixing method.Dynamic sampling improves the essence of test
Degree and repeatability, sampling cavity separates with test chamber simultaneously, does not interfere with each other, and test chamber volume is greatly reduced, with Static Sampling phase
Ratio, air chamber cleans the most more convenient.Patent No. CN102353701A realizes a kind of crop pests Electronic Nose utilizing volatile matter
Diagnostic method, patent No. CN102297930A Electronic Nose achieves the identification to freshness of meat and prediction, the most all uses
The Static Headspace method of sampling.Patent No. CN103116961A achieves a kind of confined space fire based on Electronic Nose Technology and visits
Observe and predict alarm system and method, wherein have employed dynamic sampling method.Patent No. CN104535618A achieves a kind of based on electronics
The Chinese liquor recognition methods of nose technology, wherein have employed the Dynamic headspace method of sampling.
Wang Ling use dynamic and static combination the method for sampling investigated sensor array power of test (Wang Ling etc. Electronic Nose
Applied research [J] sensing technology journal in dangerous explosive detection, 2015,20 (1): 42-45.).
For Electronic Nose, a kind of good method of sampling should be able to obtain gas within the shortest sampling time
Sample useful stable state/multidate information as much as possible.The good method of sampling can not only optimize the design of electric nasus system, and
Sampling precision and the identification ability of electric nasus system can be improved.The Electronic Nose method of sampling that presently, there are differs from one another, and
Existing dynamic sampling method has been used by most electric nasus systems and has proved effectively.But the existing method of sampling, the most dynamic
The state method of sampling still suffers from following defect and weak point:
(1) Static Sampling method, volume is relatively big, and the required response time is longer, and repeatable relatively low, not easy cleaning.
(2) existing dynamic sampling method, compared with static method, though small volume and sampling time are reduced.But it is existing dynamic
State sampling method, owing to needs obtain complete Restoration stage curve, so the sampling time is the longest.Especially more difficult from biography to some
The sample of sensor surfaces desorption, such as drinks and quintessence oil class equal samples, its Restoration stage time is longer.
(3) existing dynamic sampling method, generally uses typical syllogic sampling policy, i.e. ascent stage, steady-state process and
Restoration stage.If it is too high that ascent stage sucks concentration of specimens, and makes the gas sensor array long period be in higher concentration
In the middle of sample gas, the intoxicating phenomenon of sensor easily occurs.
Summary of the invention
For the problems referred to above, it is an object of the invention to overcome the deficiency of prior art means, it is provided that one can quickly be adopted
The Electronic Nose method of sampling of sample.The present invention uses Bionic Design, the physiological process inhaled by simulation continuous several times call by call, solves existing
The Electronic Nose method of sampling is had to cause sampling time longer problem owing to Restoration stage curve is longer, it is achieved quickly adopting of Electronic Nose
Sample.Technical scheme is as follows:
A kind of bionical method of sampling respiration of Electronic Nose, the Electronic Nose used includes the adjustable speed gas being connected by electromagnetic valve
Pump, evaporation air chamber and sensor air chamber, a complete sample cyclic comprises 3 sample cyclic, and step is as follows:
(1) electric nasus system powers on so that gas sample fully evaporates in evaporation air chamber；
(2) first circulation of bionical breathing sampling starts, and first electromagnetic valve for adjusting is connected and sucked sampling gas circuit, makes boil-off gas
Room is connected with sensor air chamber；
(3) the suction sampling element that adjustable speed air pump starts to circulate for the first time is opened, will by the pure air after filtering
Gas sample brings sensor air chamber into along sampling gas circuit, and duration of ventilation is 1 second, controls the PWM ripple duty of adjustable speed air pump rotating speed
Ratio is set to 55000/125000；
(4) close adjustable speed air pump electromagnetic valve for adjusting, make evaporation air chamber and sensor air chamber separate and airtight, etc.
Treat that sensor and sample react and reach stable state, 15 seconds waiting time；
(5) start the exhalation link of for the first time circulation, first electromagnetic valve for adjusting and realize exhalation gas circuit, make evaporation air chamber with
Sensor air chamber is connected, and is connected as Butterworth Hatch (2) with extraneous by the electromagnetic valve being connected with the gas outlet of sensor air chamber；
(6) open adjustable speed air pump to start to breathe out sample for the first time, by the pure air after filtering by sensor air chamber
In sample gaseous mixture by Butterworth Hatch (2) breathe out, duration of ventilation is 4 seconds, and PWM duty cycle is 125000/12500；
(7) it is then switched off adjustable speed air pump, and simultaneously closes off path between electromagnetic valve, make evaporation air chamber and sensor air chamber
Separate and airtight, wait that sensor reaches new stable state, 12 seconds waiting time, so far first breath sample cyclic knot
Bundle；
(8) second and third time circulating sampling process substantially with circulate for the first time identical, difference is as follows: for the second time
It is 70000/125000 that circulation sucks sampling element PWM ripple dutycycle, and the time is still 1 second；Leading to of second time circulation exhalation link
The gas time is 2 seconds；
(9) third time circulation sucks sampling element PWM ripple dutycycle is 125000/125000, and the time is still 1 second；3rd
The duration of ventilation of secondary circulation exhalation link is 1 second.
Compared with prior art, the technology of the present invention feature and effect:
(1) rapidity, compared with existing dynamic sampling method, being carried bionical method of sampling respiration can more rapid complete to adopt
Sample process.
(2) bionical multi-section circulation sampling, is carried bionical method of sampling respiration and is simulated the physiology mistake that continuous several times call by call is inhaled
Journey, it is possible to avoid gas sensor to be exposed to for a long time in the sample atmosphere of higher concentration, after being also beneficial to every time sample
Rapid Cleaning air chamber.
(3) sampling feature rich, bionical breathing sampling comprises multiple continuous subcycle, and each subcycle is again by phase
Same sampling policy completes, and i.e. sucks, suspends, breathes out and suspend four-stage.This sampling policy contains multiple circulation, energy
Enough bring the stable state/behavioral characteristics than existing dynamic sampling method more horn of plenty.
Accompanying drawing explanation
Fig. 1 is used Electronic Nose structured flowchart and workflow diagram by the present invention
Fig. 2 is existing Electronic Nose dynamic sampling method sampling control strategy of the present invention
Fig. 3 is Electronic Nose of the present invention bionical method of sampling respiration sampling control strategy
Fig. 4 is existing Electronic Nose dynamic sampling single-sensor result curve of the present invention
Fig. 5 is Electronic Nose of the present invention bionical breathing sampling single-sensor result curve
Fig. 6 is pretreated bionical breathing sampling array curve of the present invention
Detailed description of the invention
The present invention will be described with embodiment below in conjunction with the accompanying drawings.
Electronic Nose structure of the present invention as it is shown in figure 1, this Electronic Nose not only can direct detected gas sample, also may be used
For detecting the liquid samples such as Chinese liquor.This Electronic Nose mainly includes evaporating and sampling apparatus, sensor gas chamber reaction device, and
Control & data acquisition pretreatment system three parts.
The method of sampling that the present invention relates to as a example by detection Chinese liquor sample, the main working process of Electronic Nose as it is shown in figure 1,
First made the Chinese liquor sample in evaporation air chamber fully evaporate by the heating of silicon heating tape, then squeeze into pure air by adjustable speed pump
For carrier gas, and electromagnetic valve for adjusting controls gas circuit, makes Chinese liquor sample gas enter sensor air chamber and biography therein with certain rule
Sensor array reacts, fully after reaction sampling, by AD (analog-digital conversion controller) Acquisition Circuit and signal condition
Collection signal being uploaded preservation and analyzes further, whole work process is completed by main controller controls, and user also can be by touching
Touch screen interface and complete interactive controlling.
The device of the Electronic Nose that the present invention relates to includes adjustable speed air pump, electromagnetic valve, evaporation air chamber, sensor air chamber, AD
Acquisition chip and master controller.Wherein, adjustable air pump serves not only as bringing sample gas into the sampling pump of sensor air chamber, also makees
For the cleaning pump that evaporation air chamber and sensor air chamber are carried out.
The speed governing air pump that adjustable speed air pump is Chengdu Qihai E & M Manufacturing Co., Ltd. that the present invention relates to, model is
FAY6003, running voltage 12V, peak flow is 3000mL/min, relative vacuum Du Yue-36kPa, maximum output pressure
60kPa, the rotating speed of this air pump can be adjusted by the dutycycle of the PWM ripple that blue line end inputs, and the rotating speed of air pump is at yellow line
End feeds back with square wave frequency.
Air path part of the present invention relates to air filter and electromagnetic valve.Owing to air-channel system uses air as carrier gas, need
Fixed filter is added, for filtering the impurity components such as dust in air, in order to avoid destroying the inside of air pump at the air inlet of air pump
Structure.Selected electromagnetic valve is the OKD-1306 model of Shenzhen Ou Kada, running voltage 12V, watt level 5.2W, D.C. resistance
220 Ω, electromagnetic valve length is respectively 54mm, 20mm, 31mm.
The most adjustable air pump is connected by the air inlet of electromagnetic valve 1 with evaporation air chamber, further through electromagnetic valve 3 and biography
The air inlet of sensor air chamber is connected；And evaporate the gas outlet of air chamber by electromagnetic valve 2 and electromagnetic valve 3 and the air inlet of sensor air chamber
Mouth is connected；The gas outlet of sensor air chamber is connected with electromagnetic valve 4.Electromagnetic valve 2 and electromagnetic valve 4 respectively clean air chamber time as steaming
Get angry the Butterworth Hatch 1 of room and sensor air chamber and Butterworth Hatch 2.
The method of sampling that the present invention relates to is by adjustable speed air pump and electromagnetic valve 1,2,3,4, and cooperate realization, air channels sampling
Control to be automatically performed according to sampling control strategy set in advance by master controller.
In order to further illustrate the advantage of the bionical method of sampling respiration that the present invention proposes, the present invention compared for a kind of typical case
Dynamic sampling method.The control strategy of this exemplary dynamic method of sampling is as in figure 2 it is shown, be first turned on sampling pump when being passed through one section
Between sample gas, be then shut off sampling pump, wait for a period of time and make sensor response reach stable state, then open cleaning pump, be passed through
Air chamber is carried out by pure air, until making sensor recover near baseline value.Control strategy as shown in Figure 2 is taked to obtain
The sensor response curve of exemplary dynamic sampling is as shown in Figure 4.As shown in Figure 4, this dynamic sampling method is typical syllogic
Sampling, i.e. a: ascent stage, b: steady-state process, c: Restoration stage.Ascent stage sensor rises to steady-state response from baseline value
Maximum, then keeps a period of time in steady-state process, finally returns to again near baseline response value from steady-state response value.
Bionical the used control strategy of breathing sampling method that the present invention proposes is as shown in Figure 3.Whole control strategy can be drawn
Being divided into 3 cyclic processes (as Fig. 3 dotted line divides), each cycle stage is completed by same policy again, the most first opens sampling pump and leads to
Enter a bit of time samples gas, be then shut off sampling pump, wait for a period of time and make sensor response reach stable state, then open clear
Wash the pump a bit of time, be passed through pure air and air chamber is carried out, be then shut off cleaning pump, and the sensor that waits for a period of time
Response reaches new stable state.Compared with exemplary dynamic sampling policy, the difference of bionical breathing sampling policy maximum is: 1, bionical
Breathe sampling policy by the biological continuous of short duration respiratory of simulation, the sampling policy of multiple circulations in the proposition short time；2, imitative
In raw breathing sampling policy, in each cyclic process, it is passed through sample gas, is passed through the most again pure air and is carried out；3、
In bionical breathing sampling policy, the wash phase of each circulation is the shortest compared to exemplary dynamic sampling, is therefore not required to make
Sensor recovers near baseline.
The sensor response curve that the bionical method of sampling respiration that the present invention proposes obtains is as shown in Figure 5.As it is shown in figure 5,
Whole sampling curve can be divided into 3 corresponding with sampling policy the cycle stage, and the most each cycle stage have employed phase
Same control strategy.As a example by Fig. 5 second circulation B, it includes 1, sucks, and 2, suspend, 3, exhalation, 4, suspend totally 4 links.
In response curve, the first circulation A begins to respond to from the rising of baseline value adnexa, and does not recover at the end of the 3rd circulation C sampling
Near baseline value.
The most bionical breathing have employed this bionical strategy so that it is (right that the time of bionical breathing sampling is greatly shortened
Ratio Fig. 2 and 3, Figure 4 and 5 understand).Have benefited from the sampling policy of multiple circulations in the bionical breathing sampling short time so that imitative simultaneously
Raw breathing sampling obtains the stable state/dynamic response characteristic (contrast Figure 4 and 5 knowable to) more abundanter than exemplary dynamic sampling.
Electronic Nose shown in Fig. 1 uses bionical method of sampling respiration to sample, its array sampled result after pretreatment
As shown in Figure 6, this sensor array comprises 7 gas sensors to curve.
The operating procedure of the most bionical method of sampling respiration following (referring to the drawings 1,3,5,6):
(1) electric nasus system powers on, and during preheated one-section, chien shih boil-off gas room constant temperature is to 70 degrees Celsius, first by Chinese liquor
Sample fully evaporates in evaporation air chamber.
(2) first circulation of bionical breathing sampling starts, and first electromagnetic valve for adjusting realizes sucking sampling gas circuit, makes electromagnetic valve
1 connects with evaporation air inlet of air chamber, makes evaporation air chamber gas outlet connect with electromagnetic valve 2, then through electromagnetic valve 3 and sensor air chamber
Air inlet is connected.
(3) then open adjustable speed air pump to start to suck sample for the first time, by the pure air after filtering, gaseous state is white
Wine sample brings sensor air chamber into along sampling gas circuit, and duration of ventilation is 1 second, and the PWM ripple dutycycle controlling air pump rotating speed is set to
55000/125000。
(4) it is then switched off air pump, and simultaneously closes off path between electromagnetic valve, make evaporation air chamber and sensor air chamber the most only
Vertical and airtight, wait that sensor reacts with sample and reach stable state, 15 seconds waiting time.
(5) then start the exhalation link of first circulation, first electromagnetic valve for adjusting and realize exhalation gas circuit, make electromagnetic valve 1
Connecting with electromagnetic valve 3, then connect with sensor air inlet of air chamber, electromagnetic valve 4 is connected with extraneous as Butterworth Hatch 2.
(6) then open adjustable speed air pump to start to breathe out sample for the first time, by the pure air after filtering by sensor
Sample gaseous mixture in air chamber is breathed out by Butterworth Hatch 2, and duration of ventilation is 4 seconds, and PWM duty cycle is 125000/125000.
(7) it is then switched off air pump, and simultaneously closes off path between electromagnetic valve, make evaporation air chamber and sensor air chamber the most only
Vertical and airtight, wait that sensor reaches new stable state, 12 seconds waiting time.So far first breath sample cyclic terminates.
(8) second and third time circulating sampling process substantially with circulate for the first time identical, difference is as follows: for the second time
It is 70000/125000 that circulation sucks sampling element PWM ripple dutycycle, and the time is still 1 second；Leading to of second time circulation exhalation link
The gas time is 2 seconds.
(9) third time circulation sucks sampling element PWM ripple dutycycle is 125000/125000, and the time is still 1 second；3rd
The duration of ventilation of secondary circulation exhalation link is 1 second.
(10) as above, described bionical method of sampling respiration comprises altogether 3 sample cyclic, and total sampling time is 91 seconds.Battle array
Arrange the curve of the most bionical breathing sampling as shown in Figure 6.
(11), after each bionical breathing sampling completely terminates, also need evaporation air chamber and sensor air chamber are carried out the most clearly
Wash, in case next time uses.
(12) first evaporation air chamber is carried out, electromagnetic valve in gas circuit 1, electromagnetic valve 2 are connected with evaporation air chamber, and will
Electromagnetic valve 2 regulates to Butterworth Hatch 1 and extraneous connection.
(13) then open at full speed adjustable speed air pump as cleaning pump, be 3 minutes to evaporation air chamber scavenging period.
(14) then sensor air chamber is carried out, electromagnetic valve 1 is connected with electromagnetic valve 3, then connect with sensor air chamber
Logical, electromagnetic valve 4 regulates to Butterworth Hatch 2 and extraneous connection.
(15) then open at full speed adjustable speed air pump as cleaning pump, be 3 minutes to sensor air chamber scavenging period.
Bionical method of sampling respiration of the present invention, in addition to above-mentioned application example, also can be widely used to other multiple gas
Body, the Electronic Nose sampling of liquid or solid sample, such as the beverage such as environmental gas, hazardous chemical gas, milk product, other
The Electronic Nose sample detecting of the multiple sample such as food, crops.Bionical method of sampling respiration the most of the present invention the most not only limits
Control strategy in examples detailed above.Actual when using this method of sampling, the cycle-index that sampling is comprised can be not limited to 3 times, often
The sampling total time of individual circulation, the time including the most each link is also not necessarily limited to the single situation described by examples detailed above.Root
Carried bionical method of sampling respiration according to the present invention, each parameter can be adjusted flexibly further according to different Electronic Nose application characteristics,
To the suitable method of sampling.
Claims (1)
1. the bionical method of sampling respiration of Electronic Nose, the Electronic Nose used includes the adjustable speed gas being connected by electromagnetic valve
Pump, evaporation air chamber and sensor air chamber, a complete sample cyclic comprises 3 sample cyclic, and step is as follows:
(1) electric nasus system powers on so that gas sample fully evaporates in evaporation air chamber；
(2) bionical breathing sampling first circulation start, first electromagnetic valve for adjusting connect suck sampling gas circuit, make evaporation air chamber with
Sensor air chamber is connected；
(3) the suction sampling element that adjustable speed air pump starts to circulate for the first time is opened, by the pure air after filtering by gas
Sample brings sensor air chamber into along sampling gas circuit, and duration of ventilation is 1 second, and the PWM ripple dutycycle controlling adjustable speed air pump rotating speed sets
It is 55000/125000；
(4) close adjustable speed air pump electromagnetic valve for adjusting, make evaporation air chamber and sensor air chamber separate and airtight, wait to be passed
Sensor and sample react and reach stable state, 15 seconds waiting time；
(5) start the exhalation link of circulation for the first time, first electromagnetic valve for adjusting and realize exhalation gas circuit, make evaporation air chamber and sensing
Device air chamber is connected, and is connected as Butterworth Hatch (2) with extraneous by the electromagnetic valve being connected with the gas outlet of sensor air chamber；
(6) open adjustable speed air pump to start to breathe out sample for the first time, by the pure air after filtering by sensor air chamber
Sample gaseous mixture is breathed out by Butterworth Hatch (2), and duration of ventilation is 4 seconds, and PWM duty cycle is 125000/12500；
(7) it is then switched off adjustable speed air pump, and simultaneously closes off path between electromagnetic valve, make evaporation air chamber and sensor air chamber mutual
Independent and airtight, wait that sensor reaches new stable state, 12 seconds waiting time, so far first breath sample cyclic terminates；
(8) second and third time circulating sampling process substantially with circulate for the first time identical, difference is as follows: second time circulation
Sucking sampling element PWM ripple dutycycle is 70000/125000, and the time is still 1 second；When second time circulation breathes out the ventilation of link
Between be 2 seconds；
(9) third time circulation sucks sampling element PWM ripple dutycycle is 125000/125000, and the time is still 1 second；Third time is followed
It is 1 second that ring around goes out the duration of ventilation of link.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110221029A (en) * | 2019-06-28 | 2019-09-10 | 西安建筑科技大学 | A kind of simulator and analogy method of real human body respiratory |
| US20200166492A1 (en) * | 2018-11-23 | 2020-05-28 | Infineon Technologies Ag | Method for Providing Calibration Data for a Gas Sensor Device, Method of Calibrating a Gas Sensor Device, and Processing Device for a Gas Sensor Device |
| CN112816273A (en) * | 2020-12-30 | 2021-05-18 | 天津智易时代科技发展有限公司 | Gas rapid sampling processing air chamber |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11264809A (en) * | 1998-03-17 | 1999-09-28 | Shimadzu Corp | Gas identifying device |
| CN101806763A (en) * | 2010-02-26 | 2010-08-18 | 华东理工大学 | Olfactory analog instrument and qualitative, quantitative and simultaneous analysis method of various gases |
| CN102297930A (en) * | 2011-07-20 | 2011-12-28 | 浙江大学 | Method for identifying and predicting freshness of meat |
| CN102353701A (en) * | 2011-07-20 | 2012-02-15 | 浙江大学 | Diagnostic method for insect attacks on crops by utilizing volatile matter |
| CN103513013A (en) * | 2013-08-01 | 2014-01-15 | 浙江工商大学 | Intelligent electronic nose system based device and method for analyzing quality of ice black tea beverage |
| CN104535618A (en) * | 2014-12-30 | 2015-04-22 | 天津大学 | White spirit recognition method based on electric nose technology |
| CN104569056A (en) * | 2014-12-30 | 2015-04-29 | 天津大学 | Portable liquor identification equipment based on electronic nose technology |
-
2016
- 2016-08-10 CN CN201610662961.8A patent/CN106289887B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11264809A (en) * | 1998-03-17 | 1999-09-28 | Shimadzu Corp | Gas identifying device |
| CN101806763A (en) * | 2010-02-26 | 2010-08-18 | 华东理工大学 | Olfactory analog instrument and qualitative, quantitative and simultaneous analysis method of various gases |
| CN102297930A (en) * | 2011-07-20 | 2011-12-28 | 浙江大学 | Method for identifying and predicting freshness of meat |
| CN102353701A (en) * | 2011-07-20 | 2012-02-15 | 浙江大学 | Diagnostic method for insect attacks on crops by utilizing volatile matter |
| CN103513013A (en) * | 2013-08-01 | 2014-01-15 | 浙江工商大学 | Intelligent electronic nose system based device and method for analyzing quality of ice black tea beverage |
| CN104535618A (en) * | 2014-12-30 | 2015-04-22 | 天津大学 | White spirit recognition method based on electric nose technology |
| CN104569056A (en) * | 2014-12-30 | 2015-04-29 | 天津大学 | Portable liquor identification equipment based on electronic nose technology |
Non-Patent Citations (2)
| Title |
|---|
| 亓培锋 等: "用于白酒识别的电子鼻数据分析与参数优化", 《天津大学学报（自然科学与工程技术版）》 * |
| 王玲 等: "电子鼻在危险爆炸物检测中的应用研究", 《传感技术学报》 * |
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| US20200166492A1 (en) * | 2018-11-23 | 2020-05-28 | Infineon Technologies Ag | Method for Providing Calibration Data for a Gas Sensor Device, Method of Calibrating a Gas Sensor Device, and Processing Device for a Gas Sensor Device |
| US11899001B2 (en) * | 2018-11-23 | 2024-02-13 | Infineon Technologies Ag | Method for providing calibration data for a gas sensor device, method of calibrating a gas sensor device, and processing device for a gas sensor device |
| CN110221029A (en) * | 2019-06-28 | 2019-09-10 | 西安建筑科技大学 | A kind of simulator and analogy method of real human body respiratory |
| CN112816273A (en) * | 2020-12-30 | 2021-05-18 | 天津智易时代科技发展有限公司 | Gas rapid sampling processing air chamber |
| CN112816273B (en) * | 2020-12-30 | 2023-08-08 | 天津智易时代科技发展有限公司 | Quick sampling treatment air chamber for gas |
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