CN101551375B - Dynamic olfaction instrument based on triangle odor bag method - Google Patents
Dynamic olfaction instrument based on triangle odor bag method Download PDFInfo
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- CN101551375B CN101551375B CN2009100986240A CN200910098624A CN101551375B CN 101551375 B CN101551375 B CN 101551375B CN 2009100986240 A CN2009100986240 A CN 2009100986240A CN 200910098624 A CN200910098624 A CN 200910098624A CN 101551375 B CN101551375 B CN 101551375B
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Abstract
The invention discloses a dynamic olfaction instrument based on triangle odor bag method, which comprises a microcomputer control system, a drive circuit and a pneumatic connecting device; the microcomputer control system is connected with the control circuit and the pneumatic connecting device successively. the microcomputer control system comprises a first and second highly accurate gas quality flow control device, a first, second and third relay, a first, second and third triode, an olfaction distinguishing indicator lamp and a 51 single chip microcomputer; the first relay is connected to the 51 single chip microcomputer by the first triode; the second relay is connected to the 51 single chip microcomputer by the second triode; the third relay is connected to the 51 single chip microcomputer by the third triode; and the first and second highly accurate gas quality flow control device, a mode selector switch, the olfaction distinguishing indicator lamp, a keyboard and a display are respectively connected with the 51 single chip microcomputer. The invention adopts quality flow control mode to control gas dilution multiple, reduces human operation error, reduces analysis time, reduces labor intensity, needs no olfaction distinguishing bag, and reduces cost.
Description
Technical field
The present invention relates to olfactometer, relate in particular to a kind of dynamic olfactometer based on 3 comparison expression odor bag methods.
Background technology
In environmental protection, environmental management, environmental impact assessment, environment difficulties processing, completion of project environmental protection inspection and acceptance, stench (odor concentration) index receives extensive attention in recent years.
3 comparison expressions are smelt bag method and in the Japanese atmospheric environment association annual meeting of holding in 1972, are proposed first, then nineteen ninety-five Japan formally 3 comparison expression odor bag methods are write in " odor prevention method ".The odor pollution of China research starts from eighties of last century eighties, and 3 comparison expression odor bag methods are the standard method of China's regulation air quality stench test, are extensively adopted by China environmental monitoring department.
3 comparison expression odor bag methods are surveyed foul gas concentration; Be earlier to charge into odorless air, another then to charge into odorless air and tested foul gas sample and supply to smell the person of debating smelling and debate by certain dilution ratio with two in three odorless bags; When smelling after the correct identification of the person of debating has the foul smell bag; Dilute step by step again, smell and distinguish, when the odor concentration of dilute sample is lower than the odor threshold of smelling the person of distinguishing, stop experiment.Each sample is smelt the person of distinguishing by some names and is measured simultaneously, and last basis is smelt the individual threshold value of the person of distinguishing and smelt the average threshold of distinguishing the group member, tries to achieve odor concentration.
Abroad, the assay method of odor concentration mainly contains: ASTM syringe method, olfactometer method etc.
1) ASTM syringe method is the abbreviation of American Society for Testing Materials, and 1962 is the air dilution method of foul smell by Los Angeles,U.S area atmosphere bureau of prevention and therapeutics with the improvement of ASTM syringe method.Principle is the 100mL syringe with odorless, and sample (foul gas) is used the odorless gas dilution, is diluted to the foul smell of various intensity, carries out olfactory test by the laboratory technician and becomes odorless gas until being diluted to sample.The extension rate of this moment is an odor concentration.
2) greatly about 19 end of the centurys; Zi Wademaka (Zwaardemake) has invented first olfactometer on the human history; But up to the eighties in 20th century olfactometer just be widely used in the test of odor pollution, the mass flowmeter olfactometer that olfactometer also progressively develops into today by at that time spinner-type flowmeter olfactometer with adopt the directly olfactometer of dilution of venturi technology.Present this method mainly applies to comprise the area, Hong Kong etc. of 25 European countries, Australia, New Zealand, Singapore and China of Britain.
Olfactometer is a kind of gas to be diluted, and the equipment of collector's sense of smell impression simultaneously.A series of gaseous mixture through dilution; Discharge with certain speed; Smell the person of distinguishing for one group and once from smell cup, distinguish whether difference odorous, the result that they observe with distinguish going on record in the process from reliability, calculate the odor concentration of gas through mathematical statistic method.Be at present the technology of pilot-gas extension rate based on the maximum difference of the olfactometer of European standard.What the Dynascent olfactometer adopted is the directly dilution of venturi technology, and what the Olfakormat of Holland, the olfactometers such as Odormat of Singapore then adopted is to come the pilot-gas extension rate through the electron mass flowmeter.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, a kind of dynamic olfactometer based on 3 comparison expression odor bag methods is provided.
Dynamic olfactometer based on 3 comparison expression odor bag methods comprises little calculation machine control system, the gentle device that is dynamically connected of driving circuit; Control System of Microcomputer links to each other with control circuit, pneumatic coupling arrangement successively; Described Control System of Microcomputer comprises the first high-precision gas mass flow controller, the second high-precision gas mass flow controller, first relay, second relay, the 3rd relay, first triode, second triode, the 3rd triode, mode SS, smells and distinguish pilot lamp, 51 single-chip microcomputers, keyboard, display; First relay links to each other with 51 single-chip microcomputers through first triode; Second relay links to each other with 51 single-chip microcomputers through second triode; The 3rd relay links to each other with 51 single-chip microcomputers through the 3rd triode, the first high-precision gas mass flow controller, the second high-precision gas mass flow controller, mode SS, smells and distinguishes that pilot lamp, keyboard, display link to each other with 51 single-chip microcomputers respectively.
Described driving circuit comprises that sky is opened, fuse, motor heat protection, minipump, power light, rectifier, the first high-precision gas mass flow controller, the second high-precision gas mass flow controller, first relay, second relay, the 3rd relay, first solenoid valve, second solenoid valve, Control System of Microcomputer; Sky is opened with fuse, rectifier and is connected successively; Motor heat protection be parallel between fuse, the rectifier after minipump is connected; Power light is parallel between fuse, the rectifier; The first high-precision gas mass flow controller, the second high-precision gas mass flow controller, first relay, second relay, the 3rd relay, first solenoid valve, second solenoid valve are parallel on the rectifier successively; The first high-precision gas mass flow controller, the second high-precision gas mass flow controller, first relay, second relay, the 3rd relay link to each other with Control System of Microcomputer respectively.
Described pneumatic coupling arrangement comprises that activated carbon air filter, sampler bag, 2/2-way solenoid valve, the first high-precision gas mass flow controller, the second high-precision gas mass flow controller, first retaining valve, second retaining valve, minipump, two-bit triplet solenoid valve, work box, fixed smelling distinguish that platform, movable type are smelt and distinguish mouth; Activated carbon air filter links to each other with the first high-precision gas mass flow controller, first retaining valve, minipump, two-bit triplet solenoid valve successively; Fixed smelling distinguished that platform, movable type are smelt and distinguished and mouthful link to each other with the two-bit triplet solenoid valve respectively; Sampler bag links to each other with the second high-precision gas mass flow controller, second retaining valve, minipump, two-bit triplet solenoid valve successively, and the activated carbon air filter outlet links to each other with the sampler bag inlet through the 2/2-way solenoid valve.
Described fixed smelling distinguishes that platform is provided with six worktable, and each worktable is provided with to smell and distinguishes mouth, keyboard, smells and distinguish pilot lamp.
Described movable type is smelt and is distinguished and mouthful comprise handle, draft tube, judgement button, smell and distinguish mouthful, smell and distinguish pilot lamp; Judge that button is set on the handle, draft tube is contained in the handle the inside and distinguishes and mouthful be connected with smelling, and smells to distinguish that pilot lamp is embedded in to smell and distinguish a mouthful edge.
The present invention can realize the automation mechanized operation of 3 comparison expression odor bag methods survey odor concentrations.In smelling the process of distinguishing, smell the person of distinguishing through auto-control software, dilution gas distributing system, 6 in same sample and smell simultaneously and distinguish, smell and distinguish that the result feeds back.Smell the person of distinguishing for 6 and smell simultaneously and distinguish analytic sample, reduce to smell and distinguish that bag aeration quantity difference is to smelling the influence of the person's of distinguishing result of determination because of difference; The sample size that charges into gas mixer chamber according to extension rate is controlled through computer realization full cut-off ring by the high precision mass flow controller.Realize that through automatic dilution system the distribution of different dilution ratios has reduced artificial departure; Smell and distinguish mouth according to Asian's face contour characteristic Design, distribution air-flow output speed meets the requirement of human body eupnea comfort level; This instrument can be fit to laboratory and on-site measurement simultaneously.Experimentation need not use smelling of 3 comparison expression odor bag methods to distinguish bag, has practiced thrift cost; The sample test process can be reduced and judged teacher's workload by computer controlled automatic, saves the single sample minute, reduces and smells the person's of distinguishing labour cost.
Description of drawings
Fig. 1 is based on the dynamic olfactometer structured flowchart of 3 comparison expression odor bag methods;
Fig. 2 is Control System of Microcomputer figure of the present invention;
Fig. 3 is driving circuit figure of the present invention;
Fig. 4 is a pneumatic coupling arrangement structural representation of the present invention;
Fig. 5 is that fixed smelling of the present invention distinguished the platform structural representation;
Fig. 6 is that movable type of the present invention is smelt and distinguished the mouth structure synoptic diagram.
Among the figure: Control System of Microcomputer 1, the driving circuit 2 gentle devices 3 that are dynamically connected; The first high-precision gas mass flow controller 4, the second high-precision gas mass flow controller 5, first relay 6, second relay 7, the 3rd relay 8, first triode 9, second triode 10, the 3rd triode 11, mode SS 12, smell and distinguish pilot lamp 13,51 single-chip microcomputers 14, keyboard 15, display 16; Sky opens 17, fuse 18, motor heat protection 19, minipump 20, power light 21, rectifier 22, first solenoid valve 23, second solenoid valve 24; Activated carbon air filter 25, sampler bag 26,2/2-way solenoid valve 27, first retaining valve 28, second retaining valve 29, two-bit triplet solenoid valve 30, work box 31, fixed smelling are distinguished that platform 32, movable type are smelt and are distinguished mouthfuls 33; Worktable 34, smell and distinguish mouthfuls 37; Handle 35, draft tube 36, smell and distinguish mouthfuls 38, smell and distinguish pilot lamp 39, judge button 40.
Embodiment
Like Fig. 1, shown in 2, comprise little calculation machine control system 1, the driving circuit 2 gentle devices 3 that are dynamically connected based on the dynamic olfactometer of 3 comparison expression odor bag methods; Wherein Control System of Microcomputer 1 links to each other with control circuit 2, pneumatic coupling arrangement 3 successively; Described Control System of Microcomputer 1 comprises the first high-precision gas mass flow controller 4, the second high-precision gas mass flow controller 5, first relay 6, second relay 7, the 3rd relay 8, first triode 9, second triode 10, the 3rd triode 11, mode SS 12, smell and distinguish pilot lamp 13,51 single-chip microcomputers 14, keyboard 15, display 16; First relay 6 links to each other with 51 single-chip microcomputers 14 through first triode 9; Second relay 7 links to each other with 51 single-chip microcomputers 14 through second triode 10; The 3rd relay 8 links to each other with 51 single-chip microcomputers 14 through the 3rd triode 11, the first high-precision gas mass flow controller 4, the second high-precision gas mass flow controller 5, mode SS 12, smells and distinguishes that pilot lamp 13, keyboard 15, display 16 link to each other with 51 single-chip microcomputers 14 respectively.
The operator selects experimental program according to actual conditions pass-through mode SS during experiment, two kinds of experiment analytical methods is provided: pollution source analytical approach and environmental analysis method here.Pass through single-chip microcomputer during experiment and realize the distribution of different analytical approachs by software control; Automatically accomplish calculation process by software to experimental result; Through display output final data, use the present invention that sample gas is smelt and distinguish backwash, saved a large amount of manual works; Improved conventional efficient, computing machine is to 3 comparison expression odor bag method GB/T14675-93 of analytical calculation foundation of data.
As shown in Figure 3, driving circuit 2 comprises that sky opens 17, fuse 18, motor heat protection 19, minipump 20, power light 21, rectifier 22, the first high-precision gas mass flow controller 4, the second high-precision gas mass flow controller 5, first relay 6, second relay 7, the 3rd relay 8, first solenoid valve 23, second solenoid valve 24, Control System of Microcomputer 1; Sky is opened 17 and is connected successively with fuse 18, rectifier 22; Motor heat protection 19 be parallel between fuse 18, the rectifier 22 after minipump 20 is connected; Power light 21 is parallel between fuse 18, the rectifier 22; The first high-precision gas mass flow controller 4, the second high-precision gas mass flow controller 5, first relay 6, second relay 7, the 3rd relay 8, first solenoid valve 23, second solenoid valve 24 are parallel on the rectifier 22 successively; The first high-precision gas mass flow controller 4, the second high-precision gas mass flow controller 5, first relay 6, second relay 7, the 3rd relay 8 link to each other with Control System of Microcomputer 1 respectively.
As shown in Figure 4, pneumatic coupling arrangement 3 comprises that activated carbon air filter 25, sampler bag 26,2/2-way solenoid valve 27, the first high-precision gas mass flow controller 4, the second high-precision gas mass flow controller 5, first retaining valve 28, second retaining valve 29, minipump 20, two-bit triplet solenoid valve 30, work box 31, fixed smelling distinguish that platform 32, movable type are smelt and distinguish mouthfuls 33; Activated carbon air filter 25 and the first high-precision gas mass flow controller 4, first retaining valve 28, minipump 20, two-bit triplet solenoid valve 30 link to each other successively; Fixed smelling distinguished that platform 32, movable type are smelt and distinguished that mouthfuls 33 link to each other with two-bit triplet solenoid valve 30 respectively; Sampler bag 26 and the second high-precision gas mass flow controller 5, second retaining valve 29, minipump 20, two-bit triplet solenoid valve 30 link to each other successively, and activated carbon air filter 25 outlets link to each other with sampler bag 26 inlets through 2/2-way solenoid valve 27.
Consider to smell and distinguish to analyze and be based on human body under the environment temperature perception degree sample of foul smell is made evaluation that gas temperature too high can influence smelling distinguished the result.And the continuous operation meeting of pump is generated heat in a large number, selects for use the minipump that carries cooling system to guarantee the experimental result accuracy here.Closed-loop control is adopted in dilution control, realizes the automatic distributing control of different dilution ratios according to the mass rate control mode.Utilize minipump to supply gas, divide two gas circuit air feed, carry odorless air and sample gas respectively, adopt the high precision mass flow controller, realize the automatic distributing control of different dilution ratios through the gas flow of the different gas circuits of computer control.
As shown in Figure 5, fixed smelling distinguishes that platform 32 is provided with six worktable 34, and each worktable 34 is provided with to smell and distinguishes mouthfuls 37, keyboard 15, smells and distinguish pilot lamp 13.
Movable type as shown in Figure 6 is smelt and is distinguished and mouthfuls 33 comprise handle 35, draft tube 36, smell and distinguish mouthfuls 38, smell and distinguish pilot lamp 39, judge button 40; Judge that button 40 is set on the handle 35, draft tube 36 is contained in handle 35 the insides and distinguishes that mouthfuls 38 are connected with smelling, and smells to distinguish that pilot lamp 39 is embedded in to smell and distinguish mouthful 38 edges.
Movable type smells to distinguish mouthful to be an absolute construction, is connected on the work box with the special flexible pipe of certain-length, smells the person of distinguishing and picks up movable type and smell and distinguish mouth, can move within the specific limits, is convenient to smell under the field environment and distinguishes.Smell and distinguish mouthful facial curvilinear characteristic design, select quality matetrial for use, make that face has comfort level preferably when smelling the person's of distinguishing nose and pressing close to smell to distinguish mouthful work according to the Asian.
The operator selects to distinguish that worktable is still smelt with movable type and distinguish that mouth operates with smelling according to actual conditions during experiment.Distinguish that worktable or movable type are smelt and distinguish and mouthful supply gas to smelling through the control of two-bit triplet solenoid valve is realized.
Use step of the present invention and sample analysis method are following:
(A) start, vacuum pump starts, and backwashing manner operation one minute lets and through the odorless air that filters gas piping system is fully washed, with peculiar smell in the discharge line.
(B) operating personnel are connected in work box up-sampling bag interface with the sampler bag that is full of sample gas of 5L.
(C) it is in place respectively to smell the person of distinguishing.
(D) operating personnel per sample situation select the experimental analysis scheme, press the corresponding button.
(E) flowrate control valve distinguishes that to smelling mouth is seen the odorless air off or certain smelling of dilution ratio distinguished sample according to the accurate pilot-gas flow of computer instruction, and corresponding pilot lamp is lighted under computer control simultaneously.The time of supplying gas is 90 seconds at every turn.
(F) smell the person of distinguishing and distinguish that gas is smelt and distinguish smelling, and send judged result to computing machine through the input button according to pilot lamp prompting.
(G) computing machine is handled input results according to selected testing scheme, calculates round-robin dilution ratio next time.
(H) repeat (E) to (G), carry out many smelling of dilution ratio of group and distinguish test, testing time is according to different samples and inequality.
Wherein (D) item is smelt and is distinguished that analytical plan has two kinds: pollution source analytical approach and environmental analysis method.
1. after selecting the pollution source analytical approach, get into pollution source routine analyzer and record interface (GB/T14675-93-8.3.1).Smell the person of distinguishing and smell through three and distinguish distinguishing of gas, after correct identification has smelly gas, dilute step by step again, smell and distinguish, when the odor concentration of dilute sample is lower than the odor threshold of smelling the person of distinguishing, stop to test.Each sample is smelt the person of distinguishing by 6 and measured simultaneously, and is last according to the individual threshold value of smelling the person of distinguishing with smell the average threshold of distinguishing the group member, tries to achieve the odor concentration value.
2. after selecting the environmental analysis method, get into environmental analysis program and record interface (GB/T14675-93-8.3.2).Determination of Environmental Samples is every smells each extension rate of the person of distinguishing and differentiates three times, and each sample is smelt the person of distinguishing by 6 and measured simultaneously, and when smelling the person of distinguishing identification a certain gas scent of, then feedback information is in the judgement platform.When an extension rate analysis finished, computer calculated the average normal solution rate of group (M value) automatically.Through the size of M value, judge that the teacher can judge ensuing extension rate, greater than 0.58, then extension rate strengthens as if the M value; If the M value less than 0.58, then reduces extension rate.Until the M that obtains respectively greater than 0.58
1Value and less than 0.58 M
2Value.According to M
1And M
2Value is calculated, and tries to achieve odor concentration.
Smelling of one whole distinguishes that flow process is:
1. smell and distinguish a mouthful flushing of pipeline, adopt big flow air inlet, 20 seconds duration, this is the flushing of pipeline between the two adjacent groups experiment, smells the person of distinguishing and utilizes this time input result of determination;
2. distinguish that to smelling mouth send odorless air, 90 seconds duration by the speed of 6m/min;
3. smell and distinguish a mouthful flushing, adopt big flow air inlet, 20 seconds duration;
4. distinguish that to smelling mouth send the mixed gas of a certain dilution ratio, 90 seconds duration by the speed of 6m/min;
5. smell and distinguish a mouthful flushing, adopt big flow air inlet, 20 seconds duration;
6. distinguish that to smelling mouth send odorless air, 90 seconds duration by the speed of 6m/min;
7. smell and distinguish a mouthful flushing, adopt big flow air inlet, 20 seconds duration;
8. smell the person of distinguishing input judged result, computer recording is also analyzed this result.
Wherein 2., 4., 6. sequential computer STOCHASTIC CONTROL.
Claims (3)
1. the dynamic olfactometer based on 3 comparison expression odor bag methods is characterized in that comprising Control System of Microcomputer (1), the gentle device that is dynamically connected of driving circuit (2) (3); Wherein Control System of Microcomputer (1) links to each other with driving circuit (2), pneumatic coupling arrangement (3) successively; Described Control System of Microcomputer (1) comprises the first high-precision gas mass flow controller (4), the second high-precision gas mass flow controller (5), first relay (6), second relay (7), the 3rd relay (8), first triode (9), second triode (10), the 3rd triode (11), mode SS (12), smells and distinguish pilot lamp (13), 51 single-chip microcomputers (14), keyboard (15), display (16); First relay (6) links to each other with 51 single-chip microcomputers (14) through first triode (9); Second relay (7) links to each other with 51 single-chip microcomputers (14) through second triode (10); The 3rd relay (8) links to each other with 51 single-chip microcomputers (14) through the 3rd triode (11), the first high-precision gas mass flow controller (4), the second high-precision gas mass flow controller (5), mode SS (12), smells and distinguishes that pilot lamp (13), keyboard (15), display (16) link to each other with 51 single-chip microcomputers (14) respectively; Described driving circuit (2) comprises that sky is driven (17), fuse (18), motor heat is protected (19), minipump (20), power light (21), rectifier (22), the first high-precision gas mass flow controller (4), the second high-precision gas mass flow controller (5), first relay (6), second relay (7), the 3rd relay (8), first solenoid valve (23), second solenoid valve (24), Control System of Microcomputer (1); Sky is opened (17) and is connected successively with fuse (18), rectifier (22); After protecting (19) and minipump (20) is connected, motor heat is parallel between fuse (18), the rectifier (22); Power light (21) is parallel between fuse (18), the rectifier (22); The first high-precision gas mass flow controller (4), the second high-precision gas mass flow controller (5), first relay (6), second relay (7), the 3rd relay (8), first solenoid valve (23), second solenoid valve (24) are parallel on the rectifier (22) successively; The first high-precision gas mass flow controller (4), the second high-precision gas mass flow controller (5), first relay (6), second relay (7), the 3rd relay (8) link to each other with Control System of Microcomputer (1) respectively; Described pneumatic coupling arrangement (3) comprises that activated carbon air filter (25), sampler bag (26), 2/2-way solenoid valve (27), the first high-precision gas mass flow controller (4), the second high-precision gas mass flow controller (5), first retaining valve (28), second retaining valve (29), minipump (20), two-bit triplet solenoid valve (30), work box (31), fixed smelling distinguish that platform (32), movable type are smelt and distinguish mouthful (33); Activated carbon air filter (25) links to each other with the first high-precision gas mass flow controller (4), first retaining valve (28), minipump (20), two-bit triplet solenoid valve (30) successively; Fixed smelling distinguished that platform (32), movable type are smelt and distinguished that mouthful (33) link to each other with two-bit triplet solenoid valve (30) respectively; Sampler bag (26) links to each other with the second high-precision gas mass flow controller (5), second retaining valve (29), minipump (20), two-bit triplet solenoid valve (30) successively, and activated carbon air filter (25) outlet links to each other with sampler bag (26) inlet through 2/2-way solenoid valve (27).
2. a kind of dynamic olfactometer according to claim 1 based on 3 comparison expression odor bag methods; It is characterized in that described fixed smelling distinguish that platform (32) is provided with six worktable (34), each worktable (34) is provided with to smell and distinguishes mouthful (37), a keyboard (15), smells and distinguish pilot lamp (13).
3. a kind of dynamic olfactometer based on 3 comparison expression odor bag methods according to claim 1 is characterized in that described movable type is smelt to distinguish that mouthful (33) comprise handle (35), draft tube (36), smell and distinguish mouthful (38), smell and distinguish pilot lamp (39), judge button (40); Judge that button (40) is set on the handle (35), draft tube (36) is contained in handle (35) the inside and distinguishes that mouthful (38) are connected with smelling, and smells to distinguish that pilot lamp (39) is embedded in to smell and distinguish mouthful (a 38) edge.
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| CN102360000A (en) * | 2011-08-01 | 2012-02-22 | 浙江大学 | National standard method-based foul smell dynamic olfactometer |
| CN103175902A (en) * | 2013-03-27 | 2013-06-26 | 国家电网公司 | Gas intake system used for simulating insulating oil proportioning of transformer |
| CN107894493A (en) * | 2017-12-22 | 2018-04-10 | 武汉洪兴伟业环境科技有限公司 | A kind of foul smell, which is smelt, distinguishes nose cup |
| CN112504802A (en) * | 2020-11-20 | 2021-03-16 | 中国建材检验认证集团股份有限公司 | Be used for smell sample to dilute and smell appraisal personnel training evaluation device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3902851A (en) * | 1974-01-09 | 1975-09-02 | Fats & Proteins Res Found | Method of detecting odors and apparatus therefor |
| US5767385A (en) * | 1996-02-06 | 1998-06-16 | Iowa State University Research Foundation, Inc. | Automated forced-choice dynamic-dilution olfactometer and method of operating the same |
| CN201464457U (en) * | 2009-05-18 | 2010-05-12 | 浙江大学 | Triangle odor bag method-based dynamic olfactometer |
-
2009
- 2009-05-18 CN CN2009100986240A patent/CN101551375B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3902851A (en) * | 1974-01-09 | 1975-09-02 | Fats & Proteins Res Found | Method of detecting odors and apparatus therefor |
| US5767385A (en) * | 1996-02-06 | 1998-06-16 | Iowa State University Research Foundation, Inc. | Automated forced-choice dynamic-dilution olfactometer and method of operating the same |
| CN201464457U (en) * | 2009-05-18 | 2010-05-12 | 浙江大学 | Triangle odor bag method-based dynamic olfactometer |
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Application publication date: 20091007 Assignee: Hangzhou Lv Li agriculture and animal husbandry Science and Technology Ltd. Assignor: Zhejiang University Contract record no.: 2013330000066 Denomination of invention: Dynamic olfaction instrument based on triangle odor bag method Granted publication date: 20120523 License type: Exclusive License Record date: 20130412 |
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