CN108469452A - A kind of fingerprint data collection device for the detection of animalsderived feedstuffs freshness - Google Patents
A kind of fingerprint data collection device for the detection of animalsderived feedstuffs freshness Download PDFInfo
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- CN108469452A CN108469452A CN201810733953.7A CN201810733953A CN108469452A CN 108469452 A CN108469452 A CN 108469452A CN 201810733953 A CN201810733953 A CN 201810733953A CN 108469452 A CN108469452 A CN 108469452A
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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
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0031—General constructional details of gas analysers, e.g. portable test equipment concerning the detector comprising two or more sensors, e.g. a sensor array
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0031—General constructional details of gas analysers, e.g. portable test equipment concerning the detector comprising two or more sensors, e.g. a sensor array
- G01N33/0034—General constructional details of gas analysers, e.g. portable test equipment concerning the detector comprising two or more sensors, e.g. a sensor array comprising neural networks or related mathematical techniques
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- Chemical Kinetics & Catalysis (AREA)
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- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Abstract
The invention discloses a kind of fingerprint data collection devices for the detection of animalsderived feedstuffs freshness,Including upper shell,Centerbody,Lower housing and multiple sensors,Upper shell is in regular prism shape,The first installation cavity is equipped in upper shell,Upper shell opens up mounting hole respectively on each side,Each mounting hole is connected to the first installation cavity,Each sensor is respectively arranged in each mounting hole,Upper shell is equipped with gas outlet,Centerbody is in regular prism shape,The top surface of centerbody,Venthole is offered on bottom surface respectively,Air admission hole,Centerbody is uniformly provided with multiple gas passages along its surface,The both ends of each gas passage are connected to air admission hole and venthole respectively,Lower housing is equipped with air inlet,Centerbody is installed in the first installation cavity,The mounting hole connection of each gas passage respectively corresponding thereto,Air inlet is connected to air admission hole,Lower housing is fixed on upper shell,Gas outlet is connected to venthole.The apparatus structure is simple, ingenious in design, small, high sensitivity, as a result accurately and reliably.
Description
Technical field
The present invention relates to freshness detection technique fields, and in particular to a kind of to be used for what animalsderived feedstuffs freshness detected
Fingerprint data collection device.
Background technology
Animalsderived feedstuffs refer to the single feed through industrialization processing, making using animal or animal byproducts as raw material.
Since animalsderived feedstuffs are rich in protein and fat, during transport, storage, breaks down proteins, fat easily occurs
Oxidative rancidity etc. and be easy by microbial contamination and other chemical contaminations, cause its nutritional ingredient reduce, heat content
It reduces, palatability declines, this not only endangers the normal breeding of animal and health, safety that also can be to animal derived food and the mankind
Health generate some potential safety problems.And freshness can weigh that animalsderived feedstuffs protein is putrid and deteriorated and fat rancidity
Degree, therefore carry out animalsderived feedstuffs freshness detection seem very necessary.
Currently, the detection of animalsderived feedstuffs freshness uses artificial sense and chemical assay.Sense organ is the smell by people
Judge that smell, rancidity or putrefactive odor etc. judge its freshness, simple and practicable but shortage objectivity, it is difficult to form unified mark
It is accurate.Volatile Base Nitrogen (total volatile basic nitrogen, TVB-N) and soda acid (acid value, AV) are respectively
Reflect protein corruption and fat rancidity degree, is usually judged by chemical gauging TVB-N and AV content animal derived
The freshness of feed needs to carry out pre-treatment to sample, and process is cumbersome, labor intensive and material resources.Common detection method also has
The rapid detection methods such as near infrared spectroscopic method, but it is expensive, it has not been convenient to it carries, prevents it from being applied well.
As feed detection technique develops, development one kind is quick, lossless, easily the detection of animalsderived feedstuffs freshness fills
It is imperative to set.
Electronic nose is a kind of a kind of method of quick detection quality, has been widely used for various aspects now.Electronic nose
It is a kind of bionic olfactory device, mainly using the gas sensor array with cross-sensitivity to by the volatilization of sample
Property smell is detected, and then detected gas is identified and quantified by finger-print.Energy in existing electronic nose
What it is for the detection of animalsderived feedstuffs freshness is not much that most of equipment volumes are huge, not portable, are unfavorable for animal
The detection in real time of the scene of source feed freshness, in this equipment, gas sensor room occupies critical positions, test chamber design
It is unreasonable that gas can be caused to form vortex in inside, increase response and the recovery time of sensor, flow velocity is distributed in test chamber
It is uneven, it is difficult to ensure the consistency of sensor array induction numerical value.The air cavity of existing sensor reaction chamber is cuboid mostly
Structure, gas pass into each gas sensor from it and are flowed out again from another side on one side, and this kind of device has a disadvantage, be exactly from
The closer gas sensor of air inlet can first contact with sample gas and generate response signal, and separate out the nearest gas sensor of mouth
It will finally be contacted with sample gas and generate response signal, therefore the air cavity of this structure can lead to the delay of response signal, and gas
The length of chamber can extend as the number of gas sensor increases, and keeps entire electric nasus system device not light, is unfavorable for taking
Band, so the volume of air cavity must be limited, and if air pump flow velocity it is too fast, be unfavorable for filling for sample gas and sensor array
Tap is touched.Sample gas can not carry out contact response with all sensors, so the flowing with gas from import to outlet,
Apart from closer gas sensor response delay and concentration, equal phenomenon is not smaller, when mutually from gas sensor farther out, it is delayed
Between it is longer, concentration difference is more apparent.Simultaneously because the odour component of animalsderived feedstuffs is complicated, and different qualities is animal derived
Otherness between feed is small, in order to improve the accuracy of detection, need to be screened to electronic nose sensor array, to obtain one
Group can show effective array of sample message by multilist as far as possible.
Invention content
In order to solve the above-mentioned problems of the prior art, the present invention provides one kind being used for animalsderived feedstuffs freshness
The fingerprint data collection device of detection, the apparatus structure is simple, ingenious in design, small, easy to carry, high sensitivity, detection
As a result accurate and reliable.
Technical solution is used by realizing above-mentioned purpose of the present invention：
It is a kind of for animalsderived feedstuffs freshness detection fingerprint data collection device, including upper shell, centerbody, under
Shell and sensor array, sensor array include multiple sensors, and upper shell is in regular prism shape, and positive rib is offered in upper shell
Columnar first installation cavity, each flanking central of upper shell offer mounting hole respectively, and each mounting hole is connected to the first installation cavity,
The number of sensor is identical as the number of upper casing body side surface, and each sensor is respectively arranged in each mounting hole, on upper shell top surface
Equipped with gas outlet, centerbody is in regular prism shape, and the size of centerbody and the size of the first installation cavity match, the top surface of centerbody
Venthole is offered on center, air admission hole is offered in the bottom center of centerbody, and centerbody is uniformly provided with multiple along its surface
The number of gas passage, gas passage is equal with the number of center body side surface, each gas passage sequentially pass through centerbody top surface,
The both ends of each side and bottom surface, each gas passage are connected to air admission hole and venthole respectively, and centerbody is installed on the first installation cavity
In, centerbody and the first installation cavity are interference fitted, and each gas passage be connected to mounting hole corresponding thereto respectively, air inlet and into
Stomata is connected to, and lower housing center is equipped with air inlet, and lower housing is fixed on upper shell, and gas outlet is connected to venthole.
Gas passage is in " [" shape, each gas passage are located on the plane of symmetry of centerbody short transverse, each gas passage
It is made of lower air inlet duct, intermediate detection slot and upper outgassing groove, the upper outgassing groove of each gas passage is located on the top surface of centerbody, respectively
The outlet end of the upper outgassing groove of gas passage is connected to venthole, and it is each that the intermediate detection slot of each gas passage is located at centerbody
The lower air inlet duct of the middle of side, each gas passage is located on the bottom surface of centerbody, the lower air inlet duct of each gas passage into
Mouth end is connected to air admission hole.
The second installation cavity is offered on upper shell bottom surface, the first installation cavity and the connection of the second installation cavity, lower housing are installed on
In second installation cavity, lower housing and the second installation cavity are interference fitted.
Lower housing and the second installation cavity are in the form of annular discs.
The upper shell and centerbody is in positive ten prism-shaped, and mounting hole has ten, and mounting hole is circular hole, wherein five
Mounting hole is big mounting hole, and in addition five mounting holes are small mounting hole, and the diameter of big mounting hole is more than the diameter of small mounting hole, greatly
Mounting hole and small mounting hole are interspersed, and sensor has ten, wherein five are six pin sensors, in addition five are four pins
Sensor, five six pin sensors are respectively arranged in five big mounting hole, and five four pin sensors are respectively arranged in five
In a small mounting hole.
It is uniformly provided with four handrails on lower housing outer end face, handrail is in prism-shaped, and four handrails are square distribution.
Air inlet and gas outlet are cylindrical, and air admission hole and venthole are circular hole.
Upper shell, centerbody, lower housing material be polytetrafluoroethylene (PTFE).
Compared with prior art, advantages and advantages of the invention are：
1, the device uses the test chamber of multi-channel type, for parallel column and linear rows column, gas velocity
There are smooth areas for degree variation, and there are advantages in terms of the uniform stability of flow velocity, and air-flow response is fast, and work efficiency is high.
2, when being detected, when sample gas is with sensor contacts, each sensor corresponds to one solely to the device respectively
Vertical gas chamber ensures not interfereing with each other between each sensor, improve each sensor to the synchronisms of sample gas examinations and
Uniformity, each sensor independently reacts with sample gas, to prevent the cross influence between each sensor, while being also to protect
Card sample gas comes into full contact with sensor, reduces response and recovery time, improves sensitivity.
Description of the drawings
Fig. 1 is the structural schematic diagram of the fingerprint data collection device detected for animalsderived feedstuffs freshness.
Fig. 2 is the sectional view of Fig. 1.
Fig. 3 is the structural schematic diagram of upper shell.
The structural schematic diagram of body centered on Fig. 4.
Fig. 5 is the structural schematic diagram of lower housing.
The sample smell that Fig. 6 is obtained for the fingerprint data collection device that is detected for animalsderived feedstuffs freshness
PCA shot charts.
Wherein, in the big mounting holes of 1-, 2- lower housings, 3- air inlets, 4- gas passages, the small mounting holes of 5-, the gas outlets 6-, 7-
Air inlet duct, 12- intermediate detections slot, the upper outgassing grooves of 13-, 14- tetra- under heart body, 8- upper shells, 9- air admission holes, 10- ventholes, 11-
Pin sensor, six pin sensors of 15-, the first installation cavitys of 16-, the second installation cavitys of 17-, 18- handrails.
Specific implementation mode
The present invention is described in detail below in conjunction with the accompanying drawings.
Provided by the present invention for animalsderived feedstuffs freshness detection fingerprint data collection device structure such as Fig. 1 and
Shown in Fig. 2, including upper shell 8, centerbody 7, lower housing 2 and sensor array.The material of upper shell 8, centerbody 7 and lower housing 2
Matter is polytetrafluoroethylene (PTFE), polytetrafluoroethylene (PTFE) have high temperature resistant, it is corrosion-resistant, do not adhere to, electrical insulating property, good ageing resistance
And the features such as leakproofness, it is highly suitable for making the device.
As shown in figure 3, upper shell 8 is in positive ten prism-shaped, axially offered successively in regular prism shape along it inside upper shell
The first installation cavity 16 and the second installation cavity 17 in the form of annular discs, the first installation cavity 16 be connected to the second installation cavity 17.Upper shell 8
Ten sides on opened up respectively there are five big mounting hole 1 and five small mounting holes 5, big mounting hole 1 and small mounting hole 5 are circle
Hole, the diameter of big mounting hole 1 are more than the diameter of small mounting hole 5, and big mounting hole 1 and small mounting hole 5 are interspersed.Upper shell 8 pushes up
Face center is equipped with gas outlet 6, and air inlet 3 is cylindrical, and in the present embodiment, air inlet internal diameter is 4mm, and outer diameter 8mm is highly
10mm。
Sensor array includes ten sensors, wherein five are four pin sensors 14, model is respectively
TGS2600, TGS2620, TGS2602, TGS2610, TGS2611, in addition five are six pin sensors 15, and model is respectively
TGS822、MQ136、MQ137、MQ139、TGS813.Five six pin sensors 15 are installed on five by insulating tape respectively
In big mounting hole 1, five four pin sensors 14 are installed on by insulating tape in five small mounting holes 5 respectively.Due to sensing
Device is not of uniform size, and four pin sensor sizes are smaller, and six pin sensor sizes are larger, so four pins and six pin sensors
Cross-distribution, each sensor are all mutual indepedent, can arbitrarily be dismantled.The position of the special installation of sensor is conducive to entire
The reduction of the volume of device.After sensor array samples sample smell, each sensor is obtained by processor simultaneously
Change curve is responded, then sensor array is optimized according to specific method, finally obtains the spy of sensor after optimization
Value indicative, to obtain the finger print data of sample, and can by the response of each sensor with the physical and chemical index of fish meal be combined come
Obtain the finger-print information of fish meal.
As shown in figure 4, centerbody 7 is in positive ten prism-shaped, centerbody 7 is uniformly provided with ten gas passages 4, gas along its surface
Body channel is in " [" shape, each gas passage 4 are located on the plane of symmetry of 7 short transverse of centerbody.Each gas passage 4 under into
Air drain 11, intermediate detection slot 12 and upper outgassing groove 13 are constituted, and the upper outgassing groove 13 of each gas passage 4 is located at the top surface of centerbody 7
On, the outlet end of the upper outgassing groove 13 of each gas passage 4 is connected to venthole 10, and the intermediate detection slot 12 of each gas passage is distinguished
The lower air inlet duct 11 of middle positioned at each side of centerbody, each gas passage 4 is located on the bottom surface of centerbody, each gas passage
The input end of 4 lower air inlet duct 11 is connected to air admission hole.In the present embodiment, gas passage width is 3mm.Each gas passage phase
When in airflow fence, contributing to acquisition of the sensor array to sample gas.
As shown in figure 5, lower housing 2 is cylindrical, 2 center of lower housing is equipped with air inlet 3, and air inlet 3 is cylindrical, this reality
It applies in example, air inlet internal diameter is 4mm, outer diameter 8mm, is highly 10mm.Four handrails are uniformly provided on 2 outer end face of lower housing
18, handrail 18 is in prism-shaped, and four handrails 18 are square distribution.The effect of handrail is to facilitate the installation and dismounting of lower housing.Into
The height of gas port and gas outlet is 10mm, enters intermediate detection slot to gas and reacts with sensor and has reserved buffering area
Domain enables external pipeline conveniently to be accessed by air inlet and gas outlet, and conveniently with the flowmeter of external pipe, pump, electricity
The components such as magnet valve connect.
Centerbody 7 is installed in the first installation cavity 16, and centerbody 7 and the first installation cavity 16 interference fit are (due to centerbody
It is all made of polytetrafluoroethylene (PTFE) with upper shell, good airproof performance does not need the connecting components such as key), gas outlet 6 is connected to venthole 10,
Each gas passage 4 respectively with corresponding thereto big mounting hole 1 or small mounting hole 5 be connected to.Each sensor and a gas are logical
Road is identical, wherein the distance of four pin gas sensor reaction head distance center body side surfaces is 4mm, six pin gas sensors are anti-
It is 2mm, that is, each sensor and corresponding intermediate detection slot formation one to answer a distance for distance center body side surface
The volume of a independent test chamber, the test chamber is only 0.059L, not only effectively reduces the volume of whole device, but also is more had
It is come into full contact with conducive to gas and sensor, sensor response is sensitiveer, to improve the sensitivity and accuracy of device detection.
Lower housing 2 is installed in the second installation cavity 17, and lower housing 2 and the second installation cavity 17 interference fit are (due to lower housing
It is all made of polytetrafluoroethylene (PTFE) with upper shell, good airproof performance does not need the connecting components such as key), air inlet is connected to air admission hole.
Using above-mentioned harvester fingerprint data collection carried out to the fish meal samples of different freshness degrees, and to obtaining
Sensing data is analyzed, average micro- to the stationary value of curve by processor using the change curve of obtained conductance ratio
Score value, maximum rate of change value, area value extract, and the finger print data of different freshness samples are constituted with this, and using master
Component analyzing method handles the finger print data of different freshness, and the results are shown in Figure 6, from fig. 6 it can be seen that utilizing
The device can obviously classify to the fish meal of different freshness degrees, and first principal component contribution rate is 98.355%, second
Principal component contributor rate is 1.502%, and overall contribution rate is 99.857%, and total contribution rate is far longer than 85%, can effectively distinguish.
Although still can effectively be distinguished to the fish meal of different freshness degrees away from larger in the class of corrupt fish meal, the later stage can be with
Reduced in class away from raising concentration class by optimizing sensor array.Although the present invention used fish meal sample to the harvester into
Row verification, but it is equally applicable for other animalsderived feedstuffs.In short, the harvester can be bright to the progress of collected data
Aobvious freshness is distinguished, and the freshness of sample can be effectively detected.
Claims (8)
1. a kind of fingerprint data collection device for the detection of animalsderived feedstuffs freshness, it is characterised in that：Including upper shell,
Centerbody, lower housing and sensor array, sensor array include multiple sensors, and upper shell is in regular prism shape, in upper shell
Offer the first installation cavity of regular prism shape, each flanking central of upper shell offers mounting hole respectively, and each mounting hole is with first
Installation cavity is connected to, and the number of sensor is identical as the number of upper casing body side surface, and each sensor is respectively arranged in each mounting hole, on
Housing top surface is equipped with gas outlet, and centerbody is in regular prism shape, and the size of centerbody and the size of the first installation cavity match, in
Venthole is offered in the end face center of heart body, air admission hole is offered in the bottom center of centerbody, and centerbody is equal along its surface
Even to be equipped with multiple gas passages, the number of gas passage is equal with the number of center body side surface, during each gas passage sequentially passes through
The top surface of heart body, each side and bottom surface, the both ends of each gas passage are connected to air admission hole and venthole respectively, and centerbody is installed on
In first installation cavity, centerbody and the first installation cavity are interference fitted, and each gas passage is connected to mounting hole corresponding thereto respectively,
Air inlet is connected to air admission hole, and lower housing center is equipped with air inlet, and lower housing is fixed on upper shell, and gas outlet connects with venthole
It is logical.
2. the fingerprint data collection device according to claim 1 for the detection of animalsderived feedstuffs freshness, feature
It is：Gas passage in " [" shape, each gas passage are located on the plane of symmetry of centerbody short transverse, each gas passage by
Lower air inlet duct, intermediate detection slot and upper outgassing groove are constituted, and the upper outgassing groove of each gas passage is located on the top surface of centerbody, each gas
The outlet end of the upper outgassing groove in body channel is connected to venthole, and the intermediate detection slot of each gas passage is located at each side of centerbody
The lower air inlet duct of the middle in face, each gas passage is located on the bottom surface of centerbody, the import of the lower air inlet duct of each gas passage
End is connected to air admission hole.
3. the fingerprint data collection device according to claim 1 for the detection of animalsderived feedstuffs freshness, feature
It is：Offer the second installation cavity on upper shell bottom surface, shape, the size phase of the shape, size of lower housing with the second installation cavity
Matching, the first installation cavity and the connection of the second installation cavity, lower housing are installed in the second installation cavity, lower housing and the second installation cavity mistake
It is full of cooperation.
4. the fingerprint data collection device according to claim 3 for the detection of animalsderived feedstuffs freshness, feature
It is：Lower housing and the second installation cavity are in the form of annular discs.
5. according to any fingerprint data collection device for the detection of animalsderived feedstuffs freshness of claims 1 or 2,
It is characterized in that：The upper shell and centerbody is in positive ten prism-shaped, and mounting hole has ten, and mounting hole is circular hole, wherein
Five mounting holes are big mounting hole, and in addition five mounting holes are small mounting hole, and the diameter of big mounting hole is more than the straight of small mounting hole
Diameter, big mounting hole and small mounting hole are interspersed, and sensor has ten, wherein five are six pin sensors, in addition five are
Four pin sensors, five six pin sensors are respectively arranged in five big mounting hole, and five four pin sensors are pacified respectively
Loaded in five small mounting holes.
6. the fingerprint data collection device according to claim 1 for the detection of animalsderived feedstuffs freshness, feature
It is：It is uniformly provided with four handrails on lower housing outer end face, handrail is in prism-shaped, and four handrails are square distribution.
7. the fingerprint data collection device according to claim 1 for the detection of animalsderived feedstuffs freshness, feature
It is：Air inlet and gas outlet are cylindrical, and air admission hole and venthole are circular hole.
8. the fingerprint data collection device according to claim 1 for the detection of animalsderived feedstuffs freshness, feature
It is：Upper shell, centerbody, lower housing material be polytetrafluoroethylene (PTFE).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810733953.7A CN108469452A (en) | 2018-07-06 | 2018-07-06 | A kind of fingerprint data collection device for the detection of animalsderived feedstuffs freshness |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810733953.7A CN108469452A (en) | 2018-07-06 | 2018-07-06 | A kind of fingerprint data collection device for the detection of animalsderived feedstuffs freshness |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112782353A (en) * | 2019-11-04 | 2021-05-11 | 霍尼韦尔探测器公司 | Multi-sensor gas detector |
| CN114235798A (en) * | 2022-03-01 | 2022-03-25 | 广州智汇生物科技有限公司 | Method for detecting putrefactive meat used in pet food |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108627619A (en) * | 2018-06-29 | 2018-10-09 | 华中农业大学 | A kind of portable electric nose quickly detected for animalsderived feedstuffs freshness |
-
2018
- 2018-07-06 CN CN201810733953.7A patent/CN108469452A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108627619A (en) * | 2018-06-29 | 2018-10-09 | 华中农业大学 | A kind of portable electric nose quickly detected for animalsderived feedstuffs freshness |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112782353A (en) * | 2019-11-04 | 2021-05-11 | 霍尼韦尔探测器公司 | Multi-sensor gas detector |
| CN112782353B (en) * | 2019-11-04 | 2024-02-09 | 霍尼韦尔探测器公司 | Multi-sensor gas detector |
| US11913926B2 (en) | 2019-11-04 | 2024-02-27 | Honeywell Analytics Inc. | Multi-sensor gas detector |
| CN114235798A (en) * | 2022-03-01 | 2022-03-25 | 广州智汇生物科技有限公司 | Method for detecting putrefactive meat used in pet food |
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