CN206440688U - A kind of electronic nose demarcates test system - Google Patents
A kind of electronic nose demarcates test system Download PDFInfo
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- CN206440688U CN206440688U CN201621316049.9U CN201621316049U CN206440688U CN 206440688 U CN206440688 U CN 206440688U CN 201621316049 U CN201621316049 U CN 201621316049U CN 206440688 U CN206440688 U CN 206440688U
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Abstract
The utility model designs a kind of electronic nose demarcation test system, realizes the demarcation and test and appraisal to electronic nose performance to be measured to adapt to demand of the different field to electric nasus system.The system includes the air distribution system for producing mixed gas or smell being connected with electric nasus system inlet end to be measured, the Tail gas measuring analysis system being connected with electric nasus system tail gas end to be measured, the smell analysis software test module being connected with the response results output end of Tail gas measuring analysis system, and the configuration information of air distribution system, the response results output end of electric nasus system to be measured are also connected to smell analysis software test module.The utility model makes analysis of control to the recognition capability of the smell analysis software of electric nasus system, realizes effective demarcation and test and appraisal to electric nasus system.
Description
Technical field
The utility model is related to electric nasus system, demarcation test system and gas sensor domain, more particularly to electronic nose
Demarcation test system.
Background technology
Presently, gas sensor is quite extensive in the application of all trades and professions.Pure gas sensor is used for
Gas detects, the problems such as often easily being disturbed by mixed gas and occur failing to report, report by mistake.Using multiple gas sensors, gas is constituted
Body sensor array, and binding pattern identification technology constitutes Artificial Olfactory, i.e. electronic nose to mixed gas/smell analysis
System, detection and analysis for mixed gas have significant effect.Thus electric nasus system just by wide popularization and application in
In production and living, especially in medical diagnosis and air monitering, remarkable effect is obtained, referring to A D'Amico, NC Di, C
Falconi, E Martinelli. write：Detection and identification of cancers by the
Electronic nose (detection and identification of the electronic nose to cancer) .Expert Opinion on Medical
Diagnostics (medical diagnosis expertise), 2012,6 (3):175-185(11).Current most of electronic nose system
System, it is all the flow such as pattern-recognition by signal acquisition, Signal Pretreatment that it, which designs basic model, finally gives mixed gas
Composition and content.Different electric nasus system, due to being carried using different sensor arrays, Signal Pre-Processing Method, feature
Take and algorithm for pattern recognition, it recognizes that the parameters such as accuracy, recognition speed can have notable difference.And recognition speed is slow, identification
The low electric nasus system of accuracy, can also have limitation in use.It is deep, wide with what is studied electric nasus system
General promotion and application, many fields all gradually start to introduce electric nasus system, for the gas detection in production and living.This will
The electric nasus system of selection is sought, it recognizes the parameter such as precision, response time of gas, should all possess saying of using in this field
Take power, above-mentioned parameter is also the standard that electronic nose is selected in production and living.Accordingly, it would be desirable to for application environment, realize to electronics
The test of nasus system, and not yet find to demarcate the reported literature of the comparative maturity of test system on electronic nose at present.Electronics
The signal acquisition part of nasus system is typically made up of gas sensor array.Test system currently for gas sensor is opened
Hair is more ripe, the relevant report based on dynamic and static multiple gases sensor testing system.Referring to Qiao Jiping, Lv
Auspicious, the Hu Hailin (Qiao Jiping, Lv Yuxiang, Hu Hailin) of jade：Electrochemical gas sensor based on LabVIEW is special
Design and research (the Design and Study on Electrochemical Gas Sensor of property test system
Characteristics Test System Based on LabVIEW) instrumental techniques and sensor (Instrument
Technique and Sensor),2013,12:90-92,96.But, these test systems are mainly for air-sensitive original paper, test
The parameters such as sensitivity, response time of the element to giving gas, can not provide the court verdict to mixed gas or smell, because
And it is not used to the demarcation and test of electric nasus system.Therefore, design is a kind of deploys according to the test and appraisal demand of application field
Electronic nose demarcation test system has great importance.
Utility model content
The purpose of this utility model is the demand in order to adapt to different field to electric nasus system, designs a kind of electronic nose mark
Location survey test system, realizes the demarcation and test to electric nasus system performance to be measured.
To achieve the above object, the utility model is adopted the following technical scheme that：
A kind of electronic nose demarcates test system, and it is characterized in that：Including being connected with electric nasus system inlet end to be measured
The air distribution system for being used to produce mixed gas or smell, the Tail gas measuring that be connected with electric nasus system tail gas end to be measured analyzes and is
System, the smell analysis software test module that is connected with the response results output end of Tail gas measuring analysis system, air distribution system are set
Confidence breath, the response results of electric nasus system to be measured are also exported to smell analysis software test module.
Specifically, Tail gas measuring analysis system includes being arranged on the calibrating gas sensor at electric nasus system tail gas end to be measured
Array and data monitoring analysis module, the response signal data of the calibrating gas sensor array are exported to data monitoring point
Module is analysed, data monitoring analysis module exports response results to smell analysis software test module.
It is preferred that, the Tail gas measuring analysis system also includes being located at the tail gas collection after calibrating gas sensor array
Device and the device for carrying out gas-chromatography and/or mass spectral analysis to tail gas.
It is preferred that, it is also equipped between the calibrating gas sensor array and tail gas harvester of Tail gas measuring analysis system
Gas mass flow monitor, the flow value of gas mass flow monitor output is also sent to smell analysis software test mould
Block.
Specifically, air distribution system includes the gas mass flow control being arranged on electric nasus system air inlet pipeline to be measured
Device.
The air distribution system also includes the air distribution system software being connected with gas mass flow controller, the air distribution system
Software carries out data transfer by RS-232 and gas mass flow controller.
It is preferred that, the response signal data output end of the sensor array of the electric nasus system to be measured is additionally coupled to tail gas
The data monitoring analysis module of testing and analysis system.
Specifically, the data monitoring analysis module includes signal conditioning circuit, data collecting card and data analysis mould
Block, the response signal data output end of the electric nasus system to be measured and the response signal data of calibrating gas sensor array are defeated
Go out end and pass sequentially through signal conditioning circuit, data collecting card, data analysis module and smell analysis software test module company respectively
Connect.
The beneficial effects of the utility model are：There is provided more systematic electronics for electric nasus system for the utility model
Nose demarcates test system, realizes and higher control and monitoring is obtained in automatic distributing and analysis, the safety of test process, to electronics
The recognition capability of the smell analysis software of the nasus system even response signal of the sensor array of electric nasus system, all make analysis
Control, realizes the effective demarcation and test and appraisal to electric nasus system.
Brief description of the drawings
Fig. 1 is system hardware structure block diagram of the present utility model；
Fig. 2 is theory structure block diagram of the present utility model；
Fig. 3 is the flow chart of data monitoring analysis module of the present utility model；
Fig. 4 is the testing process of the present utility model for demarcating test system.
Embodiment
The utility model is further described with reference to the accompanying drawings and detailed description.
Such as Fig. 1 and 2, a kind of electronic nose demarcates test system, including with being used for that electric nasus system inlet end to be measured is connected
The air distribution system of generation mixed gas or smell, the mark for being used to provide demarcation evaluation and test being connected with electric nasus system tail gas end to be measured
The Tail gas measuring analysis system of quasi- data, the smell analysis software being connected with the response results output end of Tail gas measuring analysis system
Test module, it is soft that the configuration information of air distribution system, the response results output end of electric nasus system to be measured are also connected to smell analysis
Part test module.
Specifically, the air distribution system includes the gas mass flow control being arranged on electric nasus system air inlet pipeline to be measured
Device MFC processed, (gas mass flow is controlled the MFC that the gas mass flow controller is produced using Alicat companies of the U.S.
Device) gas distribution selection is planted there is provided more than 100, to improve distribution precision, one gas bomb of every kind of gas correspondence sets multiple storages
Gas cylinder, each gas bomb is connected to the inlet end of electric nasus system to be measured by bronchus road, and every bronchus road passes through one
MFC controls its throughput, in the identical time, by dispensing the gas of different flow, to reach total stream of control mixed gas
The purpose that amount and mixed gas concentration are matched.Valve, the switch of the gas before and after control test are provided with branch gas circuit.
It is preferred that, the air distribution system also includes the air distribution system software being connected with gas mass flow controller, distribution
System software is using LabVIEW as developing platform.Passed by the RS-232 data for completing PC end air distribution system softwares and MFC
Pass.Before distribution, trim analysis is designed in tables of data in advance, include the letter such as concentration, total gas flow rate, total testing time of gas
Breath.Open after distribution button, according to distribution tables of data, air distribution system software calculates the control voltage needed for every MFC automatically, and
Control command is sent from trend MFC, every MFC gas flow measured value is returned and shows.Mixed gas/smell is successively
By in electric nasus system to be measured and Tail gas measuring analysis system.
Mixed gas concentration is calculated to be calculated using equation below with MFC control voltages and obtained：
Wherein Vx1、Vx2、Vx3、Vx4For four MFC control voltages, Vx1MFC、Vx2MFC、Vx3MFC、Vx4MFCFor MFC maximum control
Magnitude of voltage processed, the Alicat companies MFC of selection analog voltage maximum is 5V, Flowx1MFC、 Flowx2MFC、Flowx3MFC、
Flowx4MFCFor four MFC throughput maximum, Cx1The concentration value set for gas x1.
Specifically, the calibrating gas that the Tail gas measuring analysis system includes being arranged on electric nasus system tail gas end to be measured is passed
Sensor array and data monitoring analysis module, the response signal data of the calibrating gas sensor array are exported to data prison
Analysis module is surveyed, data monitoring analysis module exports response results to smell analysis software test module.More specifically, the number
Include signal conditioning circuit, data collecting card and data analysis module, the calibrating gas sensor according to monitoring analysis module
The response signal data output end of array passes sequentially through signal conditioning circuit, data collecting card, data analysis module and gas respectively
Taste analysis software test module is connected.Data collecting card selects the multifunctional data acquisition card USB- that NI companies of the U.S. develop
6341, effectively it can be combined with LabVIEW, with 16 tunnel simulation inputs, 2 tunnel simulation outputs, communication interface is USB interface, with
PC connections are very convenient.The major function of data analysis module is that data show analysis in real time, data analysis module by based on
The demarcation testing system software of LabVIEW developing platforms realizes that all data that data collecting card collection is obtained all can be real
When show, selection is preserved, and selectively can individually show the response data of a certain bar acquisition channel in the graph.Data will
It is stored in the distinctive TDMS files of LabVIEW, number can be checked in the interface of demarcation testing system software or Excel file
According to.At sample pneumatic transmission to the Tail gas measuring analysis system of electric nasus system to be measured, the calibrating gas under the same terms can be obtained
The response signal of sensor array, is gathered by above-mentioned data acquisition modes and stored, provided for smell analysis software test module
Normal data.
Electric nasus system to be measured carries smell analysis software, the constituent analysis for mixed gas.Electric nasus system to be measured
Met with a response in mixed-gas environment after signal, acquisition response results are differentiated by carrying smell analysis software.This response
As a result configuration information with air distribution system, the response results three of Tail gas measuring analysis system carry out analysis evaluation and test and know and treat jointly
The performance of examining system.
The system can also be evaluated and tested to the performance of the sensor component in electric nasus system to be measured, in this regard, being treated described
The response signal data for surveying the sensor array of electric nasus system is directly gathered to data monitoring analysis module, passes through data monitoring
The signal conditioning circuit of analysis module and the analog input end of data collecting card, gather the sensor array of electric nasus system to be measured
Response signal data and evaluated and tested.So far, by the configuration information of air distribution system, to be measured in smell analysis software test module
The response results of electric nasus system, the response signal data of the sensor array of electric nasus system to be measured, Tail gas measuring analysis system
The response results of system, the four common mutually supervision controls in smell analysis software test module, analysis evaluation and test so that test and appraisal knot
Fruit is more for convincingness.
It is preferred that, the Tail gas measuring analysis system also includes being located at the tail gas collection after calibrating gas sensor array
Device and device (definition of front and back position and gas process for carrying out gas-chromatography and/or mass spectral analysis to tail gas
Sequencing is identical).Tail gas recycle is gathered, analysis (GC/MS analyses) is closed by gas chromatography-mass spectrum as sample gas, obtained
The composition analysis result of tail gas, the result as smell analysis software test module another standard reference.
It is preferred that, also pacify between the calibrating gas sensor array and tail gas harvester of the Tail gas measuring analysis system
Equipped with gas mass flow monitor, for monitoring whether mixed gas total flow meets value set in advance in real time, it is ensured that survey
Process safety is tried, the flow value of gas mass flow monitor output is also sent to smell analysis software test module, gas matter
Measure the MFC that flow monitor can also be produced using Alicat companies of the U.S..
Described smell analysis software test module be used for the smell analysis software performance of electric nasus system to be measured and its
The performance of sensor component makes demarcation.The performance of the smell analysis software of electric nasus system to be measured is responded by gas/smell
Sensitivity, recognition correct rate, concentration error, recognition speed, the identification parameter such as gaseous species and concentration range are evaluated.Pass
The performance of sensor device includes gas/smell response sensitivity, selectivity, stability, response time, recovery time, work temperature
The parameters such as degree influence.All above-mentioned parameters, by smell analysis software test module, the setting letter of comprehensive analysis air distribution system
The response results that breath, the response results of Tail gas measuring analysis system, electric nasus system to be measured are returned are obtained.The smell analysis software
Test module draws the response results curve of electric nasus system to be measured, the response signal of the sensor array of electric nasus system to be measured
Data and curves, the response signal data curve of calibrating gas sensor array, exhaust flow monitoring curve and GC/MS analysis knots
Really, by parameter needed for data mining and evaluation and test algorithm detailed comparisons and these data of analysis and acquisition, and then maintenance data point
Analysis technology makes evaluation and test to the performance of electric nasus system to be measured.Test process is integrated mutually supervises between multiple information, these information
Control is superintended and directed, the convincingness of evaluation result has both been ensure that, can be provided and changed according to the response of electric nasus system sensor array to be measured again
Kind suggestion.
A kind of available following simple formula of the recognition correct rate of electric nasus system to be measured, which is calculated, to be obtained：
Wherein Cx1n is the concentration that n-th measures the gas x1 that electric nasus system to be measured is obtained,For n-th measurement tail
The concentration for the gas x1 that gas monitoring system comprehensive analysis function is obtained, P1 is electronic nose to be measured to gas x1 recognition correct rate, N
For overall measurement number of times.
The present embodiment also introduces a kind of electronic nose demarcation method of testing, comprises the following steps：
1】Distribution, and calibrating gas sensor array is set at electric nasus system tail gas end to be measured；
2】By step 1】The gas or smell that prepare are delivered to the inlet end of electric nasus system to be measured；
3】Gather the response results of the smell analysis software of electric nasus system to be measured and the sound of calibrating gas sensor array
Answer result；Further, the tail gas at electric nasus system tail gas end to be measured is collected, passes through gas-chromatography and/or mass spectral analysis outlet
Body composition and concentration；Further, the response results of the sensor array in electric nasus system to be measured are gathered；Further
, determine electric nasus system tail gas end tail gas total flow to be measured；
4】By step 3】Each result and step 1】Distribution configuration information carry out contrast evaluation and test.
It is illustrated in figure 3 the flow chart of data monitoring analysis module of the present utility model.After opening program, in demarcation test
In system software interface, have corresponding function button can free controlling switch, including preservation to data, in chart show certain list
Curve, parameter initialization of data collecting card of only passage etc..According to demand, after the Initialize installation for completing each function, open
Testing button, is automatically performed the control to MFC.The response for gathering sensor array by USB-6341 analog input end is believed
Number, there is provided univoltage and sine wave, square wave, sawtooth waveforms, triangular wave for the heating voltage of analog output control sensor array
The heating voltage of wave function is for selection.There is provided the function of checking Historic preservation data in data monitoring analysis module, display
Data and data waveform.The signal of analog input end collection, can in real time show in demarcation testing system software, use different colours
Waveform real-time display multiway passage in same figure response signal, while lower section simultaneously show per paths gather
Concrete numerical value.Right side provides selection slider according to demand, to show the data and curves of certain individual passage, with display more directly perceived
User's certain channel data interested, when showing a certain channel data in user's selection chart, underlying numerical value
Array, still can keep showing the numerical information of whole passages, to strengthen man-machine interaction.Deposited in data monitoring analysis module
In save button, it is not switched on during save button (button is not in illuminating state), the data of collection, which will not be given, to be preserved, and opening is pressed
Button, the data shown in the graph, it will be stored in the TDMS files of setting, TDMS are LabVIEW private file forms, can
Specific preservation data are checked in Excel, it is also possible to which the function button for checking historical data described above, which is checked, (uses function
Button is checked, data correspondence waveform, more directly perceivedization can be obtained simultaneously), in addition to response signal data, also preserved in TDMS files
Corresponding data acquisition environment, including the information such as port number, gap marker, testing time.
It is illustrated in figure 4 the flow chart of demarcation testing system software.The utility model is flat with LabVIEW Virtual Instrument Developments
The design and realization of demarcation testing system software are completed based on platform.Before test, distribution process is preset in tables of data
The information such as gas concentration ratio, total gas flow rate and each stage duration of ventilation, open the distribution button in test software, air distribution system
Software reads the data in tables of data and automatically controls many MFC automatically, realizes the configuration of mixed gas, is electronic nose system to be measured
System provides mixed gas.The mixed gas completed is configured by electric nasus system to be measured, electric nasus system to be measured analyzes result,
The sensor array for gathering electric nasus system to be measured produces response signal data, in the software interface of data analysis module in real time
Display.At the tail gas of electric nasus system to be measured, Tail gas measuring analysis system is set, tail gas monitoring analysis result is recovered to number
According in the software interface of analysis module, and and collection electric nasus system response results Display on the same screen, do check analysis.Except
Outer is gathered to response signal of the calibrating gas sensor under tail gas, will also be to exhaust collection as analysis sample gas, to collecting
Sample gas using GC/MS analyze, smell analysis software test module is equally recovered to the gas ingredients analyzed, control is used as
Normal data.Parameters such as recognition speed, the recognition accuracy of smell analysis software to electric nasus system to be measured and to be measured
The performance of the sensor component of electric nasus system makes evaluation and test, completes the test and appraisal to electric nasus system.
Claims (8)
1. a kind of electronic nose demarcates test system, it is characterised in that：Including with being used for that electric nasus system inlet end to be measured is connected
The air distribution system that produces mixed gas or smell, the Tail gas measuring analysis system being connected with electric nasus system tail gas end to be measured and
The smell analysis software test module of the response results output end connection of Tail gas measuring analysis system, the setting letter of air distribution system
Breath, the response results of electric nasus system to be measured are also exported to smell analysis software test module.
2. electronic nose according to claim 1 demarcates test system, it is characterised in that：The Tail gas measuring analysis system bag
Include the calibrating gas sensor array and data monitoring analysis module for being arranged on electric nasus system tail gas end to be measured, the standard
The response signal data of gas sensor array is exported to data monitoring analysis module, data monitoring analysis module output response knot
Really to smell analysis software test module.
3. electronic nose according to claim 2 demarcates test system, it is characterised in that：The Tail gas measuring analysis system is also
Including the tail gas harvester after calibrating gas sensor array and for carrying out gas-chromatography and/or matter to tail gas
The device of analysis of spectrum.
4. electronic nose according to claim 3 demarcates test system, it is characterised in that：The Tail gas measuring analysis system
Gas mass flow monitor, gas mass flow prison are also equipped between calibrating gas sensor array and tail gas harvester
The flow value for surveying device output is also sent to smell analysis software test module.
5. test system is demarcated according to any described electronic noses of claim 1-4, it is characterised in that：The air distribution system includes
Gas mass flow controller on electric nasus system air inlet pipeline to be measured.
6. electronic nose according to claim 5 demarcates test system, it is characterised in that：The air distribution system also includes and gas
The air distribution system software of weight flow controller connection, the air distribution system software passes through RS-232 and gas mass flow control
Device processed carries out data transfer.
7. test system is demarcated according to any described electronic noses of claim 2-4, it is characterised in that：The electronic nose system to be measured
The response signal data output end of the sensor array of system is additionally coupled to the data monitoring analysis module of Tail gas measuring analysis system.
8. electronic nose according to claim 7 demarcates test system, it is characterised in that：The data monitoring analysis module bag
Signal conditioning circuit, data collecting card and data analysis module are included, the response signal data of the electric nasus system to be measured is defeated
The response signal data output end for going out end and calibrating gas sensor array passes sequentially through signal conditioning circuit, data acquisition respectively
Card, data analysis module and smell analysis software test module are connected.
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| CN201621316049.9U CN206440688U (en) | 2016-12-02 | 2016-12-02 | A kind of electronic nose demarcates test system |
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| CN201621316049.9U CN206440688U (en) | 2016-12-02 | 2016-12-02 | A kind of electronic nose demarcates test system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106483257A (en) * | 2016-12-02 | 2017-03-08 | 山东工商学院 | A kind of Electronic Nose demarcates test system and method |
| CN110456002A (en) * | 2019-08-15 | 2019-11-15 | 广东工业大学 | A kind of gasometric analysis device and method |
-
2016
- 2016-12-02 CN CN201621316049.9U patent/CN206440688U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106483257A (en) * | 2016-12-02 | 2017-03-08 | 山东工商学院 | A kind of Electronic Nose demarcates test system and method |
| CN106483257B (en) * | 2016-12-02 | 2019-10-08 | 山东工商学院 | A kind of electronic nose calibration test macro and method |
| CN110456002A (en) * | 2019-08-15 | 2019-11-15 | 广东工业大学 | A kind of gasometric analysis device and method |
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