CN201464457U - Triangle odor bag method-based dynamic olfactometer - Google Patents
Triangle odor bag method-based dynamic olfactometer Download PDFInfo
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- CN201464457U CN201464457U CN2009201201093U CN200920120109U CN201464457U CN 201464457 U CN201464457 U CN 201464457U CN 2009201201093 U CN2009201201093 U CN 2009201201093U CN 200920120109 U CN200920120109 U CN 200920120109U CN 201464457 U CN201464457 U CN 201464457U
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Abstract
The utility model discloses a triangle odor bag method-based dynamic olfactometer, which comprises a microcomputer control system, a drive circuit and a pneumatic connecting device, wherein the microcomputer control system is orderly connected with a control circuit and the pneumatic connecting device, and comprises a first highly-accurate gas mass flow controller, a second highly-accurate gas mass flow controller, a first relay, a second relay, a third relay, a first triode, a second triode, a third triode, an olfaction recognition indicator lamp, a 51 single chip and the like; the first relay is connected with the 51 single chip through the first triode; the second relay is connected with the 51 single chip through the second triode; the third relay is connected with the 51 single chip through the third triode; and the first and second highly-accurate gas mass flow controllers, a mode selecting switch, the olfaction recognition indicator lamp, a keyboard and a display are connected with the 51 single chip respectively. The triangle odor bag method-based dynamic olfactometer adopts a mass flow control mode to control the dilution rate of gas, reduces human operating errors, shortens analysis time, reduces labor intensity, needs no olfaction recognition bag and reduces cost.
Description
Technical field
The utility model relates to olfactometer, relates 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 is subjected to extensive attention in recent years.
3 comparison expressions are smelt bag method and are proposed first in the Japanese atmospheric environment association annual meeting of holding in 1972, 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 two in three odorless bags to be charged into that odorless air, another then charge into the odorless air by certain dilution ratio and tested foul gas sample is debated for smelling the person of debating smelling, 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, the individual threshold value that last basis is smelt the person of distinguishing with smell the average threshold of distinguishing the group member, try 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, olfactometer is also progressively developed into the mass flowmeter olfactometer of today and is adopted the directly olfactometer of dilution of venturi technology by at that time spinner-type flowmeter olfactometer.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 distinguish whether difference odorous from smell cup, the result that they observe and distinguish going on record from reliability in the process calculates 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 that the venturi technology is directly diluted, and what the Olfakormat of Holland, the olfactometers such as Odormat of Singapore then adopted is to come the pilot-gas extension rate by the electron mass flowmeter.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and 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 successively with control circuit, pneumatic coupling arrangement; 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 selector switch, 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 selector switch, 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 successively with the first high-precision gas mass flow controller, first retaining valve, minipump, two-bit triplet solenoid valve, 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 successively with the second high-precision gas mass flow controller, second retaining valve, minipump, two-bit triplet solenoid valve, 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 utility model can be realized 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 by 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 by computer realization full cut-off ring by the high precision mass flow controller.Realize that by 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 saved cost; The sample test process can be reduced and be 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 utility model;
Fig. 3 is driving circuit figure of the present utility model;
Fig. 4 is a pneumatic coupling arrangement structural representation of the present utility model;
Fig. 5 is that fixed smelling of the present utility model distinguished the platform structural representation;
Fig. 6 is that movable type of the present utility model 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 selector switch 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
As shown in Figure 1, 2, the dynamic olfactometer based on 3 comparison expression odor bag methods comprises little calculation machine control system 1, the driving circuit 2 gentle devices 3 that are dynamically connected; Wherein Control System of Microcomputer 1 links to each other successively with control circuit 2, pneumatic coupling arrangement 3; 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 selector switch 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 selector switch 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 selector switch during experiment, provides two kinds of experiment analytical methods here: pollution source analytical approach and environmental analysis method.Realize the distribution of different analytical approachs during experiment by software control by single-chip microcomputer, automatically finish calculation process by software to experimental result, by display output final data, use the utility model that sample gas is smelt and distinguish backwash, saved a large amount of artificial, 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 comprise 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 links to each other successively with the first high-precision gas mass flow controller 4, first retaining valve 28, minipump 20, two-bit triplet solenoid valve 30, 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 links to each other successively with the second high-precision gas mass flow controller 5, second retaining valve 29, minipump 20, two-bit triplet solenoid valve 30, 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 by 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 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 as shown in Figure 6; 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 by the control of two-bit triplet solenoid valve is realized.
Use step of the present utility model and sample analysis method are as follows:
(A) start, vacuum pump starts, and backwashing manner operation one minute allows filtered odorless air that 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 sent the odorless air 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 the implication body is smelt and distinguish smelling, and send judged result to computing machine by 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, enter pollution source routine analyzer and record interface (GB/T14675-93-8.3.1). smell the person of distinguishing and smell by three and distinguish distinguishing of gas, after correct identification has smelly gas, dilute step by step again, smell and distinguish, when being lower than the odor threshold of smelling the person of distinguishing, the odor concentration of dilute sample stops experiment. and each sample is smelt the person of distinguishing by 6 and is measured simultaneously, last basis is smelt the individual threshold value of the person of distinguishing and is smelt the average threshold of distinguishing the group member, tries to achieve the odor concentration value.
2. after selecting the environmental analysis method, enter 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.By 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.
Once complete smelling 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., sequential computer STOCHASTIC CONTROL 6..
Claims (5)
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 successively with control circuit (2), pneumatic coupling arrangement (3); 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 selector switch (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 selector switch (12), smells and distinguishes that pilot lamp (13), keyboard (15), display (16) link to each other with 51 single-chip microcomputers (14) respectively.
2. a kind of dynamic olfactometer based on 3 comparison expression odor bag methods according to claim 1 is characterized in that 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.
3. a kind of dynamic olfactometer based on 3 comparison expression odor bag methods according to claim 1 is characterized in that 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); The 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) links to each other successively, fixed smelling distinguished platform (32), movable type is smelt and is distinguished that mouthful (33) link to each other with two-bit triplet solenoid valve (30) respectively, the 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) links to each other successively, and activated carbon air filter (25) outlet links to each other with sampler bag (26) inlet through 2/2-way solenoid valve (27).
4. a kind of dynamic olfactometer according to claim 3 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).
5. a kind of dynamic olfactometer based on 3 comparison expression odor bag methods according to claim 3 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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| CN2009201201093U CN201464457U (en) | 2009-05-18 | 2009-05-18 | Triangle odor bag method-based dynamic olfactometer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101551375B (en) * | 2009-05-18 | 2012-05-23 | 浙江大学 | Dynamic olfaction instrument based on triangle odor bag method |
| CN102879534A (en) * | 2012-10-24 | 2013-01-16 | 天津市环境保护科学研究院 | Multi-sniffing-position intelligent stench determinator |
| CN104067988A (en) * | 2014-06-25 | 2014-10-01 | 云南农业大学 | Olfactometer for researching olfaction orientation behavior of insect for high-stick crop |
-
2009
- 2009-05-18 CN CN2009201201093U patent/CN201464457U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101551375B (en) * | 2009-05-18 | 2012-05-23 | 浙江大学 | Dynamic olfaction instrument based on triangle odor bag method |
| CN102879534A (en) * | 2012-10-24 | 2013-01-16 | 天津市环境保护科学研究院 | Multi-sniffing-position intelligent stench determinator |
| CN104067988A (en) * | 2014-06-25 | 2014-10-01 | 云南农业大学 | Olfactometer for researching olfaction orientation behavior of insect for high-stick crop |
| CN104067988B (en) * | 2014-06-25 | 2016-09-07 | 云南农业大学 | A kind of study the insecticide olfactometer to long-stalked crops olfactory sensation orientation behaviour |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100512 Termination date: 20130518 |