CN107688042A - A kind of scallop attributional analysis device based on metal oxide semiconductor sensor - Google Patents
A kind of scallop attributional analysis device based on metal oxide semiconductor sensor Download PDFInfo
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- CN107688042A CN107688042A CN201710691661.7A CN201710691661A CN107688042A CN 107688042 A CN107688042 A CN 107688042A CN 201710691661 A CN201710691661 A CN 201710691661A CN 107688042 A CN107688042 A CN 107688042A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
Abstract
The present invention relates to a kind of scallop attributional analysis device based on metal oxide semiconductor sensor, including sample room, test cabinet, vavuum pump；Vavuum pump is connected by No. three magnetic valves with sample room, while is connected by No. four magnetic valves with test cabinet；Also include compressed air bottle, compressed air bottle is connected by No. six magnetic valves with sample room, while is connected by No. seven magnetic valves with test cabinet；No. six magnetic valves are also connected with each other with No. seven magnetic valves；Sample room is connected by check valve and No. five magnetic valves with test cabinet；Also include control system, each electric signal is connected control system with each magnetic valve, each circulation air pump, each temperature, pressure sensor and electric cylinder, vavuum pump, compressed air bottle.The present invention carries out gas collecting by sample room, carries out scallop attributional analysis by test cabinet, temperature and pressure control accuracy is very high, and test result is accurate；Comprehensive utilization ratio between each part is higher, simple in construction, volume compact, and cost is relatively low.
Description
Technical field
The present invention relates to a kind of scallop attributional analysis device, is that a kind of metal-oxide semiconductor (MOS) that is based on passes specifically
The scallop attributional analysis device of sensor, belongs to scallop quality analyzing technique field.
Background technology
Existing scallop attributional analysis is typically evaluated according to parameters such as smell, physical and chemical indexs, and the artificial of smell is sentenced
Not often with subjective colo(u)r, and physical and chemical index differentiation is often cumbersome and complicated by the instrument and equipment of complexity.Existing electricity
Sub- nose equipment already has the advantages that quick, sensitive, but its equipment is expensive, and the technical requirements of maintenance and operation are high, and this is all
The assessment technique is restricted to apply in practice, this requires that one kind is simple, reliably, cheap and easy to carry portable product
Matter valuator device adapts to the demand of industry.
The content of the invention
The technical problem to be solved in the invention is：
Poor for the selectivity of mixed gas for single sensor, the present invention uses the metal oxygen of 12 performance crossovers
Compound semiconductor gas sensor array, the different odor feature of scallop release can be accurately distinguished.Innovative exploitation is based on
Metal oxide semiconductor sensor scallop attributional analysis device, can be achieved test process in the temperature and pressure degree of accuracy it is accurate
Control, easy to operate, odor identification ability is strong, equipment cost is low, is easily carried.
The present invention takes following technical scheme：
A kind of scallop attributional analysis device based on metal oxide semiconductor sensor, including sample room 1, the sample
Room upper end has the top cover of slidingtype, and inside is provided with electric cylinder 4, and the push rod of electric cylinder 4 is connected with top cover bottom；Set inside sample room
There is sample heating device 3, sample heating device 3 is connected by No.1 magnetic valve 7 with the one end of No.1 semiconductor cooling-heating device 5, and No.1 is partly led
The other end of body cold-hot machine 5 circulates air pump 8 by No.1 and is connected with sample room 1；The sample room be provided with No.1 pressure sensor 9,
No.1 temperature sensor 10, the sample room inside can pass through No. two magnetic valves 11 and ft connection on top cover；Also include surveying
Room 2 is tried, the test cabinet is connected by No. two circulation air pumps 23 with No. two one end of semiconductor cooling-heating device 6, No. two semiconductor cold-hots
The other end of device 6 is connected by No. nine magnetic valves 22 with test cabinet 2；The test cabinet 2 is provided with No. two temperature sensors 20 and two
Number pressure sensor 21；Test cabinet 2 passes through No. eight magnetic valves 19 and ft connection；Also include vavuum pump 14, the vavuum pump 14
Connected with sample room 1 by No. three magnetic valves 12, while connected by No. four magnetic valves 13 with test cabinet 2；It is empty also to include compression
Gas cylinder 25, the compressed air bottle are connected by No. six magnetic valves 17 with sample room 1, while pass through No. seven magnetic valves 18 and test
Room 2 connects；No. six magnetic valves 17 are also connected with each other with No. seven magnetic valves 18；The sample room 1 passes through check valve 15 and No. five electricity
Magnet valve 16 is connected with test cabinet 2；Also include control system, it is the control system and each magnetic valve, each circulation air pump, each
Temperature, pressure sensor and electric cylinder 4, vavuum pump 14, the connection of 25 respective electric signal of compressed air bottle.
Further, the bottom plate of test cabinet 2 is provided with metal oxide semiconductor sensor test device, the metal oxide
Semiconductor transducer test device is made up of metal oxide semiconductor sensor 26 and analog input card 27.
Further, wherein the quantity of metal oxide semiconductor sensor 26 is 12, in a manner of circular arrangement
The surface of analog input card 27 is evenly arranged in, data acquisition is realized by external-connected port.
Further, described 5, No. two semiconductor cooling-heating devices 6 of No.1 semiconductor cooling-heating device each include cavity A28, axle stream
Fan 29, half monomer cooling piece 30, cavity B31, the cavity B31 both ends are connected with sample room 1, and semiconductor chilling plate 30 is set
Between cavity A28 and cavity B31, cavity A28 and ft connection.
A kind of method of work of above-mentioned scallop attributional analysis device, comprises the following steps：
Gas collecting process：Scallop sample is put into sample heating device 3, after sample heating device 3 is put into sample room, is passed through
Electric cylinder 4 closes the top end cover of sample room 1.Close No. two magnetic valves 16, six of magnetic valve 13, five of magnetic valve 11, four
Magnetic valve 17, No. seven magnetic valves 18；Open No.1 magnetic valve 7 and, No. three magnetic valves 12, vavuum pump 14 start to extract sample room 1
Interior gas, the air pressure of sample room 1 is gathered by No.1 pressure sensor 9, when absolute pressure value is less than 10Pa, vavuum pump 14 stops
Work, No. three magnetic valves 12 being then shut off, open No. six magnetic valves 17, compressed air bottle 25 discharges pure air to sample room 1,
When absolute pressure value reaches 90000Pa, No. six magnetic valves 17 are closed；No.1 semiconductor cooling-heating device 5 starts to heat work, No.1
Gas circulator 8 opens operation, while micromachine 33 in sample heating device 3 and stirring vane 34 enter working condition, sample
Gas in product room 1 enters No.1 semiconductor cooling-heating device 5 and is heated to 50 ± 0.5 DEG C, and the gas after being heated passes through No.1
Magnetic valve 7 is entered in sample heating device 3, heats scallop sample so that scallop discharges volatile flavor material.Whole heating and
It is 10 minutes to discharge the smell time.No.1 semiconductor cooling-heating device 5 controls the gas temperature in sample room 1 so that the temperature of gas
Stabilization is at 50 ± 0.5 DEG C；Gas enters the course of work of test cabinet 2 from sample room 1：Close No. eight magnetic valves 19, open No. four
Magnetic valve 13 and No. nine magnetic valves 22.Remaining magnetic valve state is constant.Vavuum pump 14 starts to extract the gas in test cabinet 2, by
No. two air pressure of 21 collecting test room of pressure sensor 2, when absolute pressure value is less than 10Pa, vavuum pump 14 is stopped, and closes
No. four magnetic valves 13, open No. five magnetic valves 16, and remaining magnetic valve state is constant so that the gas in sample room passes through check valve
15 and No. five magnetic valves 16 enter sample room；Open electric cylinder 4 simultaneously so that the top end cover of sample room 1 moves downward compression
Internal gas, when No. two pressure sensors 21, which measure the air pressure inside of test cabinet 2, reaches 100000Pa, electric cylinder 4 stops, at once
No. five magnetic valves 16 are closed, then electric cylinder 4, which works, causes the top end cover of sample room 1 to reset；Close No.1 semiconductor cold-hot
Device 5, No.1 gas circulator 8 is closed, opens electric cylinder 4 and the top end cover of sample room 1 is opened, take out sample heating device 3,
Reinstalled to after cleaning in sample room 1, for Preparatory work of experiment next time；
Gas test process：No. nine magnetic valves 22 are opened, close 13, No. five magnetic valves 16 of No. four magnetic valves and No. seven electromagnetism
Valve 18, remaining magnetic valve state are constant.No. two semiconductor cooling-heating devices 6 are started working, and No. two gas circulators 23 open operation, dimension
The temperature stabilization of the gas in test cabinet 2 is held at 50 ± 0.5 DEG C.Metal oxide semiconductor sensor 26 in test cabinet 2 is adopted
Collect gas signal.A signal value was gathered every 5 seconds, gathers 3 signal values altogether, takes the mathematical mean of 3 signal values as most
Whole signal value；After gas signal collection terminates, No. four magnetic valves 13 are opened, vavuum pump 14 is opened and works, extract in test cabinet
Gas, by No. two air pressure of 21 collecting test room of pressure sensor 2, when absolute pressure value is less than 10Pa, vavuum pump 14 stops work
Make, close No. four magnetic valves 13, open No. seven magnetic valves 18, compressed air bottle 25 discharges pure air, No. two pressures to test cabinet 2
The air pressure of 21 collecting test room of force snesor 2, when absolute pressure value reaches 100000Pa, close No. seven magnetic valves 16.
The beneficial effects of the present invention are：
1) gas collecting is carried out by sample room, scallop attributional analysis is carried out by test cabinet, temperature and pressure control is accurate
Exactness is very high, and test result is accurate；
2) sample room and test cabinet are completely embedded, and the comprehensive utilization ratio between each part is higher, simple in construction, and volume is tight
Gather, cost is relatively low.
3) the mutual linkage of the part such as control system realization and each sensor, magnetic valve, pump, vavuum pump, accurate control,
Automaticity is high.
4) heating of scallop and volatile materials release process are carried out in the environment of one standard atmospheric pressure of low pressure, negative pressure
Environmental benefits quickly volatilize in odoring substance；Freezed using semiconductor cooling-heating device or heated, can preferably control gas temperature,
System is reliable；The quality of scallop can be quickly identified, meets the needs of quick detection analysis；Sample heating device has multiple replacements
Product, in that context it may be convenient to repeatedly tested；Vavuum pump can extract residual gas in device totally completely, avoid last residual
Gas is stayed to have an impact the result tested next time.
Brief description of the drawings
Fig. 1 is the scallop attributional analysis apparatus structure schematic diagram of the invention based on metal oxide semiconductor sensor.
Fig. 2 is the structural representation of the metal oxide semiconductor sensor test device in test cabinet.
Fig. 3 is the structural representation of sample heating device.
Fig. 4 is the structural representation of sample heating device.
In figure, 1. sample rooms, 2. test cabinets, 3. sample heating devices, 4. electric cylinders, 5. No.1 semiconductor cooling-heating devices, 6. 2
Number semiconductor cooling-heating device, 7. No.1 magnetic valves, 8. No.1s circulation air pump, 9. No.1 pressure sensors, 10. No.1 TEMPs
Device, 11. No. two magnetic valves, 12. No. three magnetic valves, 13. No. four magnetic valves, 14. vavuum pumps, 15. check valves, 16. No. five electromagnetism
Valve, 17. No. six magnetic valves, 18. No. seven magnetic valves, 19. No. eight magnetic valves, 20. No. two temperature sensors, 21. No. two pressure pass
Sensor, 22. No. nine magnetic valves, 23. No. two circulation air pumps, 24. No. three pressure sensors, 25. compressed air bottles, 26. metal oxygens
Compound semiconductor, 27. collection plate pedestals, 28. cavity A, 29. aerofoil fans, 30. semiconductor chilling plates, 31. cavity B, 32. gas
Flow cavity, 33. micromachines, 34. stirring vanes, 35. microporous filter screens, 36. heating cavities.
Embodiment
The present invention is further described with specific embodiment below in conjunction with the accompanying drawings.
Referring to Fig. 1, the scallop attributional analysis device based on metal oxide semiconductor sensor：
Basic composition：
1. sample room, 2. test cabinets, 3. sample heating devices, 4. electric cylinders, 5. No.1 semiconductor cooling-heating devices, 6. No. two half lead
Body cold-hot machine, 7. No.1 magnetic valves, 8. No. two magnetic valves, 9. No.1 pressure sensors, 10. No.1 temperature sensors, 11. No. three
Magnetic valve, 12. No. four magnetic valves, 13. No. five magnetic valves, 14. vavuum pumps, 15. check valves, 16. No. six magnetic valves, 17. No. seven
Magnetic valve, 18. No. eight magnetic valves, 19. No. nine magnetic valves, 20. No. two temperature sensors, 21. No. two pressure sensors, 22. ten
Number magnetic valve, 23. ride on Bus No. 11 magnetic valves, 24. No. three pressure sensors, 25. compressed air bottles.
The bottom of test cabinet 2 is disposed with metal oxide semiconductor sensor test device, and the metal-oxide semiconductor (MOS) passes
Sensor test device is made up of metal oxide semiconductor sensor 26 and collection plate board 27.
The structure of described sample heating device 3 include airstream compartment 32, micromachine 33, stirring vane 34, micro porous filtration
Net 35 and heating cavity 36 form
The structure of described 5, No. two semiconductor cooling-heating devices 6 of No.1 semiconductor cooling-heating device is identical, and structure composition includes
Cavity A28, aerofoil fan 29, semiconductor chilling plate 30, cavity B31 compositions.
Operation principle：
Sample heating device 3 heats scallop by crushing scallop, by air so that the volatile flavor inside scallop
Substance release comes out.The course of work：Scallop sample is put into the heating cavity 36 with stirring vane 34, and the driving of micromachine 33 is stirred
Mix blade 34 and smash scallop sample, heated air injection airstream compartment 32, hot-air passes through micro- at the top of airstream compartment 32
Hole screen pack 35 enters heating cavity 36, and the scallop sample after crushing is heated, and takes away the volatile materials of scallop, and gas is last
Discharged from the microporous filter screen 35 at the top of heating cavity 36.Micromachine 33 drives after scallop sample is put into heating cavity 36
Dynamic stirring vane 34 is run 10 seconds with 2800 revs/min of speed, then into 60 revs/min of stirring working condition, by stirring
Mix so that hot-air fully contacts with the scallop sample crushed.After scallop sample is put into sample heating device 3, the whole working time
For 10 minutes.
The work of 5, No. two semiconductor cooling-heating devices 6 of No.1 semiconductor cooling-heating device is divided into refrigeration or heating operations, process of refrigerastion：
The positive power supply of semiconductor chilling plate 30, cavity B31 are refrigeration side, and cavity A29 is heat radiation side.Cavity A29 structure is metallic aluminium
Fin radiator, heat is discharged by aerofoil fan 29, cavity B31 structure is aluminium flake plate radiator, and air enters from right-hand member
Cavity B31, then left from left end, air is cooled in cavity B31.Heating operations：The reverse power supply of semiconductor chilling plate 30, chamber
Body B31 is heat radiation side, and cavity A29 is scattered refrigeration side.Cavity A29 is entered by the released cold quantity of aerofoil fan 29, air from right-hand member
Cavity B31, then left from left end, air is heated in cavity B31.
The bottom plate of test cabinet 2 is provided with metal oxide semiconductor sensor test device, and the metal-oxide semiconductor (MOS) passes
Sensor test device is made up of metal oxide semiconductor sensor 26 and analog input card 27.Wherein metal-oxide semiconductor (MOS) passes
The quantity of sensor 26 is 12, and the surface of analog input card 27 is evenly arranged in a manner of circular arrangement, is realized by external-connected port
Data acquisition.
The top end cover of sample room 1 can open and move up and down, and the unlatching and up and down motion of top end cover are by electric cylinder 4
Driving, electric cylinder 4 drive the top end cover of sample room 1 to move downward, may be such that the gas in sample room 1 is compressed, and air pressure increases
Greatly.
No.1 pressure sensor 9 and No.1 temperature sensor 10 are installed on the top end cap of sample room 1, measure sample respectively
The temperature and pressure of gas in room 1.
The top of test cabinet 2 is provided with No. two pressure sensors 21 and No. two temperature sensors 20, measures respectively in test cabinet 2
The temperature and pressure of gas.
The air intake duct of vavuum pump 14 connects sample rooms 1 by No. three magnetic valves 12, No. four connecting test rooms 2 of magnetic valve 13,
Vavuum pump 14 can draw the gas in test cabinet 2 or sample room 1, be close to vacuum state.
If device is not used for a long time.No. three magnetic valves 12 and No. four magnetic valves 13 can be closed, open No. two magnetic valves 11, eight
Other all magnetic valves such as number magnetic valve 19, compressed air bottle is opened, to experimental provision gas bleed 2 minutes, excluding may be residual
Remaining gas.
The internal memory of compressed air bottle 25 contains the compressed air of cleaning, and No. three pressure sensors 24, compressed air are installed in top
Bottle 25 connects sample room 1 by No. six magnetic valves 17, passes through No. seven connecting test rooms 2 of magnetic valve 18.
Gas collecting process：Scallop sample is put into sample heating device 3, after sample heating device 3 is put into sample room, is passed through
Electric cylinder 4 closes the top end cover of sample room 1.Close No. two magnetic valves 16, six of magnetic valve 13, five of magnetic valve 11, four
Magnetic valve 17, No. seven magnetic valves 18.Open No.1 magnetic valve 7 and, No. three magnetic valves 12, vavuum pump 14 start to extract sample room 1
Interior gas, the air pressure of sample room 1 is gathered by No.1 pressure sensor 9, when absolute pressure value is less than 10Pa, vavuum pump 14 stops
Work, No. three magnetic valves 12 being then shut off, open No. six magnetic valves 17, compressed air bottle 25 discharges pure air to sample room 1,
When absolute pressure value reaches 90000Pa, i.e. the pressure environment less than 1 standard atmospheric pressure, it is more beneficial for volatilizing inside scallop
Property odoring substance release, close No. six magnetic valves 17.No.1 semiconductor cooling-heating device 5 starts to heat work, No.1 gas circulation
Pump 8 opens operation, while micromachine 33 in sample heating device 3 and stirring vane 34 enter working condition, in sample room 1
Gas enters No.1 semiconductor cooling-heating device 5 and is heated to 50 ± 0.5 DEG C, and the gas after being heated is entered by No.1 magnetic valve 7
Enter into sample heating device 3, heat scallop sample so that scallop discharges volatile flavor material.Whole heating and release smell
Time is 10 minutes.No.1 semiconductor cooling-heating device 5 controls the gas temperature in sample room 1 so that the temperature stabilization of gas is 50
±0.5℃。
Gas enters the course of work of test cabinet 2 from sample room 1：Close No. eight magnetic valves 19, open No. four magnetic valves 13
With No. nine magnetic valves 22.Remaining magnetic valve state is constant.Vavuum pump 14 starts to extract the gas in test cabinet 2, by No. two pressure
The air pressure of 21 collecting test room of sensor 2, when absolute pressure value is less than 10Pa, vavuum pump 14 is stopped, and closes No. four electromagnetism
Valve 13, opens No. five magnetic valves 16, and remaining magnetic valve state is constant so that the gas in sample room passes through check valve 15 and No. five
Magnetic valve 16 enters sample room.Open electric cylinder 4 simultaneously so that the top end cover of sample room 1 moves downward compression internal gas,
When No. two pressure sensors 21, which measure the air pressure inside of test cabinet 2, reaches 100000Pa, electric cylinder 4 stops, and immediately closes off No. five
Magnetic valve 16, then electric cylinder 4, which works, causes the top end cover of sample room 1 to reset.
No.1 semiconductor cooling-heating device 5 is closed, closes No.1 gas circulator 8, opens the top that electric cylinder 4 causes sample room 1
Portion's end cap is opened, and takes out sample heating device 3, is reinstalled to after cleaning in sample room 1, for Preparatory work of experiment next time.
Gas test process：No. nine magnetic valves 22 are opened, close 13, No. five magnetic valves 16 of No. four magnetic valves and No. seven electromagnetism
Valve 18, remaining magnetic valve state are constant.No. two semiconductor cooling-heating devices 6 are started working, and No. two gas circulators 23 open operation, dimension
The temperature stabilization of the gas in test cabinet 2 is held at 50 ± 0.5 DEG C.Metal oxide semiconductor sensor 26 in test cabinet 2 is adopted
Collect gas signal.A signal was gathered every 5 seconds, gathers No. 3 signals altogether, it is final gas signal to take mathematical mean.Signal
After collection terminates, No. four magnetic valves 13 are opened, vavuum pump 14 is opened and works, extract the gas in test cabinet, passed by No. two pressure
The air pressure of 21 collecting test room of sensor 2, when absolute pressure value is less than 10Pa, vavuum pump 14 is stopped, and closes No. four magnetic valves
13, No. seven magnetic valves 18 are opened, compressed air bottle 25 discharges pure air to test cabinet 2, and No. two collections of pressure sensor 21 are surveyed
The air pressure of room 2 is tried, when absolute pressure value reaches 100000Pa, closes No. seven magnetic valves 16.
The present invention is made up of metal oxide sensor and relevant device, can be identified and fanned by metal oxide sensor
The smell of shellfish, realize to scallop attributional analysis solve and existing scallop sample volatilization gas is examined by human body itself organ
Survey, subjective differences, and harmful technical problem be present, partly led based on metal oxide the invention provides one kind
The scallop attributional analysis device of body sensor, attributional analysis can be realized by identifying scallop escaping gas.
The heating of scallop and volatile materials release process are carried out in the environment of one standard atmospheric pressure of low pressure, negative pressure ring
Border is advantageous to odoring substance and quickly volatilized；Freezed using semiconductor cooling-heating device or heated, can preferably controlled gas temperature, be
System is reliable；The quality of scallop can be quickly identified, meets the needs of quick detection analysis；Sample heating device has multiple substitutes,
Easily can repeatedly it be tested；Vavuum pump can extract residual gas in device totally completely, avoid last residual
Gas has an impact to the result tested next time.
Above is the preferred embodiments of the present invention, those of ordinary skill in the art can also carry out various changes on this basis
Change or improve, on the premise of the total design of the present invention is not departed from, these conversion or improve belong to claimed
Within the scope of.
Claims (5)
- A kind of 1. scallop attributional analysis device based on metal oxide semiconductor sensor, it is characterised in that：Including sample room (1), the sample room upper end has the top cover of slidingtype, and inside is provided with electric cylinder (4), electric cylinder (4) Push rod is connected with top cover bottom；Sample heating device (3) is provided with inside sample room, sample heating device (3) passes through No.1 magnetic valve (7) Be connected with No.1 semiconductor cooling-heating device (5) one end, No.1 semiconductor cooling-heating device (5) other end by No.1 circulate air pump (8) with Sample room (1) connects；The sample room is provided with No.1 pressure sensor (9), No.1 temperature sensor (10), in the sample room Portion can pass through No. two magnetic valves (11) on top cover and ft connection；Also include test cabinet (2), the test cabinet is connected by No. two circulation air pumps (23) and No. two semiconductor cooling-heating device (6) one end Connect, No. two semiconductor cooling-heating device (6) other ends are connected by No. nine magnetic valves (22) with test cabinet (2)；On the test cabinet (2) Provided with No. two temperature sensors (20) and No. two pressure sensors (21)；Test cabinet (2) it is internal by No. eight magnetic valves (19) with Ft connection；Also include vavuum pump (14), the vavuum pump (14) is connected with sample room (1) by No. three magnetic valves (12), passed through simultaneously No. four magnetic valves (13) connect with test cabinet (2)；Also include compressed air bottle (25), the compressed air bottle is connected by No. six magnetic valves (17) with sample room (1), simultaneously It is connected by No. seven magnetic valves (18) with test cabinet (2)；No. six magnetic valves (17) are also connected with each other with No. seven magnetic valves (18)；The sample room (1) is connected by check valve (15) and No. five magnetic valves (16) with test cabinet (2)；Also include control system, the control system and each magnetic valve, each circulation air pump, each temperature, pressure sensor, And electric cylinder (4), vavuum pump (14), compressed air bottle (25) each electric signal connection.
- 2. scallop attributional analysis device as claimed in claim 1, it is characterised in that：Test cabinet (2) bottom plate is provided with metal oxygen Compound semiconductor transducer test device, the metal oxide semiconductor sensor test device are passed by metal-oxide semiconductor (MOS) Sensor (26) and analog input card (27) composition.
- 3. scallop attributional analysis device as claimed in claim 2, it is characterised in that：Wherein metal oxide semiconductor sensor (26) quantity is 12, and analog input card (27) surface is evenly arranged in a manner of circular arrangement, is realized by external-connected port Data acquisition.
- 4. scallop attributional analysis device as claimed in claim 1, it is characterised in that：The No.1 semiconductor cooling-heating device (5), two Number semiconductor cooling-heating device (6) each includes cavity A (28), aerofoil fan (29), half monomer cooling piece (30), cavity B (31), institute Cavity B (31) both ends are stated to connect with sample room (1), semiconductor chilling plate (30) be arranged on cavity A (28) and cavity B (31) it Between, cavity A (28) and ft connection.
- 5. the method for work of the scallop attributional analysis device described in a kind of claim 1, it is characterised in that comprise the following steps：Gas collecting process：Scallop sample is put into sample heating device (3), after sample heating device (3) is put into sample room, is passed through The end cap that electric cylinder (4) is closed at the top of sample room (1).Close No. two magnetic valves (11), No. four magnetic valves (13), No. five magnetic valves (16), No. six magnetic valves (17), No. seven magnetic valves (18)；Open No.1 magnetic valve (7) and, No. three magnetic valves (12), vavuum pumps (14) start to extract the gas in sample room (1), sample room (1) air pressure is gathered by No.1 pressure sensor (9), works as absolute pressure When value is less than 10Pa, vavuum pump (14) is stopped, and is then shut off No. three magnetic valves (12), opens No. six magnetic valves (17), pressure Contracting air bottle (25) discharges pure air to sample room (1), when absolute pressure value reaches 90000Pa, closes No. six magnetic valves (17)；No.1 semiconductor cooling-heating device (5) starts to heat work, and No.1 gas circulator (8) opens operation, while sample heating device (3) micromachine (33) and stirring vane (34) in enter working condition, and the gas in sample room (1) enters No.1 and partly led Body cold-hot machine (5) is heated to 50 ± 0.5 DEG C, and the gas after being heated enters sample heating device by No.1 magnetic valve (7) (3) in, scallop sample is heated so that scallop discharges volatile flavor material.Whole heating and release smell time are 10 minutes. Gas temperature in No.1 semiconductor cooling-heating device (5) control sample room (1) so that the temperature stabilization of gas is at 50 ± 0.5 DEG C；Gas Body enters the course of work of test cabinet (2) from sample room (1)：Close No. eight magnetic valves (19), open No. four magnetic valves (13) and No. nine magnetic valves (22).Remaining magnetic valve state is constant.Vavuum pump (14) starts to extract the gas in test cabinet (2), by No. two Pressure sensor (21) collecting test room (2) air pressure, when absolute pressure value is less than 10Pa, vavuum pump (14) is stopped, and closes No. four magnetic valves (13) are closed, open No. five magnetic valves (16), remaining magnetic valve state is constant so that the gas in sample room passes through Check valve (15) and No. five magnetic valves (16) enter sample room；Open electric cylinder (4) simultaneously so that the top end of sample room (1) Lid moves downward compression internal gas, reaches 100000Pa when No. two pressure sensors (21) measure test cabinet (2) air pressure inside When, electric cylinder (4) stops, and immediately closes off No. five magnetic valves (16), and then electric cylinder (4), which works, causes the top of sample room (1) End cap resets；No.1 semiconductor cooling-heating device (5) is closed, closes No.1 gas circulator (8), electric cylinder (4) is opened and causes sample The top end cover of room (1) is opened, and takes out sample heating device (3), is reinstalled to after cleaning in sample room (1), is next time real Test preparation；Gas test process：No. nine magnetic valves (22) are opened, close No. four magnetic valves (13), No. five magnetic valves (16) and No. seven electricity Magnet valve (18), remaining magnetic valve state are constant.No. two semiconductor cooling-heating devices (6) are started working, and No. two gas circulators (23) are opened Start shipment row, maintain the temperature stabilization of gas in test cabinet (2) at 50 ± 0.5 DEG C.Metal oxide in test cabinet (2) is partly led Body sensor (26) gathers gas signal.A signal value was gathered every 5 seconds, gathers 3 signal values altogether, takes 3 signal values Mathematical mean is final signal value；After gas signal collection terminates, No. four magnetic valves (13) are opened, open vavuum pump (14) work Make, the gas in test cabinet is extracted, by No. two pressure sensor (21) collecting test room (2) air pressure, when absolute pressure value is less than During 10Pa, vavuum pump (14) is stopped, and closes No. four magnetic valves (13), opens No. seven magnetic valves (18), compressed air bottle (25) pure air, No. two pressure sensor (21) collecting test room (2) air pressure, when absolute pressure value are discharged to test cabinet (2) When reaching 100000Pa, No. seven magnetic valves (16) are closed.
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| CN201710691661.7A CN107688042B (en) | 2017-08-14 | 2017-08-14 | A kind of scallop attributional analysis device based on metal oxide semiconductor sensor |
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| CN201710691661.7A CN107688042B (en) | 2017-08-14 | 2017-08-14 | A kind of scallop attributional analysis device based on metal oxide semiconductor sensor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11118744A (en) * | 1997-10-15 | 1999-04-30 | Shimadzu Corp | Odor measuring apparatus |
| CN1453584A (en) * | 2003-06-02 | 2003-11-05 | 江苏大学 | Fast non-destructive detection method and device of food smell based on gas sensor array technology |
| CN101936912A (en) * | 2010-08-25 | 2011-01-05 | 江苏大学 | Method and device for detecting freshness of fish based on olfaction visualization |
| CN102297930A (en) * | 2011-07-20 | 2011-12-28 | 浙江大学 | Method for identifying and predicting freshness of meat |
| CN103063813A (en) * | 2012-12-26 | 2013-04-24 | 江苏大学 | Rapid nondestructive on-line detection method and apparatus for freshness of fishes |
-
2017
- 2017-08-14 CN CN201710691661.7A patent/CN107688042B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11118744A (en) * | 1997-10-15 | 1999-04-30 | Shimadzu Corp | Odor measuring apparatus |
| CN1453584A (en) * | 2003-06-02 | 2003-11-05 | 江苏大学 | Fast non-destructive detection method and device of food smell based on gas sensor array technology |
| CN101936912A (en) * | 2010-08-25 | 2011-01-05 | 江苏大学 | Method and device for detecting freshness of fish based on olfaction visualization |
| CN102297930A (en) * | 2011-07-20 | 2011-12-28 | 浙江大学 | Method for identifying and predicting freshness of meat |
| CN103063813A (en) * | 2012-12-26 | 2013-04-24 | 江苏大学 | Rapid nondestructive on-line detection method and apparatus for freshness of fishes |
Non-Patent Citations (1)
| Title |
|---|
| KHULAL URMILA: "利用无损检测和多传感器数据融合技术快速检测鸡肉新鲜度", 《中国学位论文全文数据库》 * |
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| CN107688042B (en) | 2019-09-24 |
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