CN106153830A - Universal electric nasus system and detection method thereof - Google Patents
Universal electric nasus system and detection method thereof Download PDFInfo
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- CN106153830A CN106153830A CN201610659891.0A CN201610659891A CN106153830A CN 106153830 A CN106153830 A CN 106153830A CN 201610659891 A CN201610659891 A CN 201610659891A CN 106153830 A CN106153830 A CN 106153830A
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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
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/62—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode
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Abstract
nullThe invention provides one and can be applicable to environmental monitoring、Medical diagnosis、Food inspection、The universal electric nasus system in the fields such as quality control and detection method thereof，Including sample injection unit、Detector unit and PC control unit，Detector unit includes sensor array detection module and ion mobility spectrometry detection module，Sensor array technology is combined by this system with Ion mobility spectrometry，May select and individually detected by sensor array detection module or ion mobility spectrometry detection module，System detection results now is individually given by corresponding detection module，Jointly can also be detected with ion mobility spectrometry detection module by sensor array detection module，The testing result of system now is combined with the testing result of ion mobility spectrometry detection module by the testing result of sensor array detection module and is drawn，Joint-detection substantially increases the detection accuracy of conditional electronic nasus system.
Description
Technical field
The present invention relates to Electronic Nose Technology field, be specifically related to one and can be applicable to environmental monitoring, medical diagnosis, food inspection
The universal electric nasus system in the fields such as survey, quality control and detection method thereof.
Background technology
Odiferous information is one of natural quality of object, largely characterizes a certain characteristic of object.By detection
The odiferous information of different material, it is possible to achieve qualitative to object and determine quantitative analysis.
Electronic Nose be a kind of simulating human olfactory system be built into quick abnormal smells from the patient collection, analysis system.For a long time,
The evaluation means of odiferous information is broadly divided into expert sensory's evaluation and test and chemistry evaluation and test.It is strong that expert sensory evaluates and tests subjectivity, exists individual
Multiple deficiencies such as body difference is big, standard disunity, repeatability are poor；Chemistry evaluating method typically requires possess certain Professional knowledge
Technical staff's operation, process is more complicated, the cycle is longer for sample preparation and detection, and testing cost is high, it is difficult to carry out
Deep popularization.Compared to traditional method, Electronic Nose has multiple advantages such as quick, convenient, automatization, is a kind of effective
Odor detection means.
High field intensity asymmetric waveform ion mobility spectrometry (FAIMS) technology is that one is typically sent out based on Ion mobility spectrometry
The wide spectrum ion isolation technology opened up and come, this technology utilizes the ionic mobility of measured matter to there are differences under high low field intensity,
Realize separation and the detection of material, it have fast response time, resolution high, can applied range, be prone to the advantages such as miniaturization,
Have broad application prospects in fields such as environmental contaminants, explosive, metabolite detections.
Summary of the invention
The application is by providing a kind of fields such as environmental monitoring, medical diagnosis, food inspection, quality control of can be applicable to
Universal electric nasus system and detection method thereof, combine sensor array technology with Ion mobility spectrometry, optional independent
Being detected by sensor array detection module or ion mobility spectrometry detection module, testing result now is by corresponding detection module
Individually be given, it is also possible to select jointly to be detected with ion mobility spectrometry detection module by sensor array detection module, now
The testing result of electric nasus system is by the detection of the testing result of sensor array detection module Yu ion mobility spectrometry detection module
Result is combined and is drawn, substantially increases the detection accuracy of conditional electronic nasus system.
The application is achieved by the following technical solutions:
A kind of universal electric nasus system, including sample injection unit, detector unit and PC control unit, wherein, described
Detector unit includes sensor array detection module and ion mobility spectrometry detection module, and described sample injection unit includes that zero level air is sent out
Raw device, the first mass flow controller, the second mass flow controller, the 3rd mass flow controller and sample room, described
On the one hand the air-flow of zero level air generator gas outlet flows into sample room through the first mass flow controller, on the other hand through the 3rd
Mass flow controller flows into described ion mobility spectrometry detection module, the air-flow flowed out from described sample room on the one hand with flow through the
Described ion mobility spectrometry detection module is flowed into, on the other hand by the second mass stream after the air-flow mixing of three mass flow controllers
Amount controller flows into described sensor array detection module, and described sensor array detection module is for being converted to odiferous information
The signal of telecommunication, described ion mobility spectrometry detection module is for separating determinand and detecting, and described sensor array detects mould
The signal of block output and/or the signal transmission of described ion mobility spectrometry detection module output are to described PC control unit, institute
State PC control unit and carry out feature extraction and analysis for the data that will receive, and export the qualitative analysis of abnormal smells from the patient
Or quantitative analysis results.
Described mass flow controller is in order to realize the accurate control of flow.Described PC control unit completes described
The flow set of mass flow controller also carries out the reading of real-time traffic, to guarantee stablizing of flow in corresponding gas circuit.
Further, described sensor array detection module include sensor array, sensor air chamber, modulate circuit plate,
Data collecting card and single-chip microcomputer, the analog output signal of described sensor array, after described modulate circuit plate, enters institute
State data collecting card and be converted to digital data transmission to described PC control unit, the numeral output letter of described sensor array
Number through the transmission of described single-chip microcomputer to described PC control unit, described ion mobility spectrometry detection module includes based on ion migration
The detector of spectral technology, adding heat pipe, computer heating control case and filter, described computer heating control case is in order to by the described temperature adding heat pipe
Degree regulation to setting value, described in add heat pipe, filter, ion mobility spectrometry detector are sequentially connected, described ion mobility spectrometry detects
Device is by the result transmission extremely described PC control unit of detection.
Further, described sensor air chamber includes an air chamber body, two air chamber covers and at least one dividing plate, in institute
The side stating air chamber body cuts out correspondingly sized hole according to the size of respective sensor sensitive surface in described sensor array, passes
Sensor is inlayed on the hole being fixed on air chamber body side surface so that the sensitive surface of sensor towards portion in described air chamber body, sensor
Pin is placed in parallel installation towards described air chamber external body, described dividing plate and described air chamber cover, described dividing plate is provided with some
Individual air passing hole so that the air-flow entering described air chamber body flows uniformly through the sensitive surface of sensor, and described air chamber cover is connect by gas
Air inlet pipe outside head connection and escape pipe.For ensureing the sealing of sensor air chamber and not affecting sensor and normally detect, pass
Sensor air chamber uses tasteless fluid sealant to the sealing gap between sensor and air chamber body.
Further, described universal electric nasus system also include solenoid-driven plate, the first three-way valve, the second three-way valve,
3rd three-way valve and the 4th three-way valve, wherein, the first passage of described first three-way valve connects described zero level air generator
Gas outlet, the second channel of described first three-way valve by first single-pass electromagnetic valve connect described first mass flow control
Device, the third channel of described first three-way valve connects described 3rd mass flow controller by the second single-pass electromagnetic valve, described
The first passage of the second three-way valve connects the gas outlet of described sample room, and the second channel of described second three-way valve is single by the 3rd
Three-way electromagnetic valve connects the second mass flow controller, and the third channel of described second three-way valve connects the of described 3rd three-way valve
One passage, the second channel of described 3rd three-way valve connects described 3rd mass flow controller, the of described 3rd three-way valve
Triple channel adds heat pipe described in connecting, and the first passage of described 4th three-way valve connects the gas outlet of described sensor air chamber, described
The second channel of the 4th three-way valve connects the gas outlet of described ion mobility spectrometry detector, the third channel of described 4th three-way valve
Connecting the external world, described PC control unit controls the first single-pass electromagnetic valve, the second single-pass electricity by described solenoid-driven plate
Magnet valve, the 3rd single-pass electromagnetic valve and the opening and closing of the 4th single-pass electromagnetic valve.This electric nasus system is with zero level air generator as gas
Source, the break-make that PC control unit controls single-pass electromagnetic valve by solenoid-driven plate realizes relevant position air-flow break-make
Control, it is possible to achieve sensor array detection module works with ion mobility spectrometry detection module simultaneously or works independently.
Suitable sensor type can be matched according to different detection targets and quantity forms described sensor array
Row, described sensor array include metal oxide semiconductor sensor, electrochemical sensor, sonic surface wave gas sensors,
Photoionization gas sensor, digital transducer, catalytic combustion method gas sensor, thermal conductivity gas sensor, infrared ray
One or more combinations in gas sensor or solid-state electrolyte gas sensor.The gas sensor of simulation output type passes through
After modulate circuit carries out signal conversion, Filtering Processing, it is delivered to data collecting card via connecting line, complete in data collecting card
Become analogue signal to the conversion of digital signal, then via USB interface be sent to PC control unit carry out curve show with
Data analysis；Digital signal sensors passes through I2C interface or other interface mode are connected with single-chip microcomputer, then via USB interface
Reach PC control unit.
The detection method of a kind of universal electric nasus system, detects mould including sensor array detection module and ion mobility spectrometry
Block works simultaneously, sensor array detection module works independently and ion mobility spectrometry detection module works independently three kinds of Working moulds
Formula, wherein:
(1) detection method that sensor array detection module and ion mobility spectrometry detection module work simultaneously specifically include as
Lower step:
A1: described universal electric nasus system powers on and preheats；
By the flow value of each mass flow controller of requirements set, described in the regulation of described computer heating control case, add heat pipe
Temperature to required value, not setting-out product in described sample room, open whole single-pass electromagnetic valves by solenoid-driven plate, open institute
State zero level air generator, preheat according to the time that described PC control unit sets；
A2: detection determinand:
A21 base-line data gathers: by the flow value of each mass flow controller of requirements set, by described computer heating control case
Regulate described heating tube temperature to required value, not setting-out product in described sample room, open whole lists by solenoid-driven plate
Three-way electromagnetic valve, opens described zero level air generator, carries out base-line data according to the time that described PC control unit sets
Gather；
A22 determinand data acquisition: open the lid of described sample room, puts into testing sample described sample room, screws
The lid of described sample room, each mass flow controller flow value keeps constant, and the state of each single-pass electromagnetic valve keeps constant, adds
Heat pipe temperature keeps constant, runs described universal electric nasus system, carries out according to the time that described PC control unit sets
Determinand data acquisition；
A3: cleaning systems: open the lid of described sample room, taking-up sample, then screw the lid of described sample room, each matter
Amount flow controller flow value keeps constant, and the state of each single-pass electromagnetic valve keeps constant, and heating tube temperature keeps constant, runs
Described electric nasus system, carries out cleaning systems flow process according to the time that described PC control unit sets；
(2) detection method that sensor array detection module works independently specifically includes following steps:
B1: described universal electric nasus system powers on and preheats；
By requirements set the first mass flow controller and the flow value of the second mass flow controller, in described sample room
Not setting-out product, open the first single-pass electromagnetic valve and the 3rd single-pass electromagnetic valve by solenoid-driven plate and close the second single-pass electromagnetism
Valve and the 4th single-pass electromagnetic valve, open described zero level air generator, enters according to the time that described PC control unit sets
Row preheating；
B2: detection determinand:
B21 base-line data gathers: by requirements set the first mass flow controller and the stream of the second mass flow controller
Value, not setting-out product in described sample room, open the first single-pass electromagnetic valve and the 3rd single-pass electromagnetic valve by solenoid-driven plate
And close the second single-pass electromagnetic valve and the 4th single-pass electromagnetic valve, open described zero level air generator, according to described host computer control
The time that unit processed sets carries out base-line data collection；
B22 determinand data acquisition: open the lid of described sample room, puts into testing sample described sample room, screws
The lid of described sample room, the first mass flow controller and the second mass flow controller flow value keep constant, each single-pass
The state of electromagnetic valve keeps constant, runs described universal electric nasus system, the time set according to described PC control unit
Carry out determinand data acquisition；
B3: cleaning systems: open the lid of described sample room, taking-up sample, then screw the lid of described sample room, first
Mass flow controller and the second mass flow controller flow value keep constant, and the state of each single-pass electromagnetic valve keeps constant,
Run described universal electric nasus system, carry out cleaning systems flow process according to the time that described PC control unit sets；
(3) detection method that ion mobility spectrometry detection module works independently specifically includes following steps:
C1: described electric nasus system powers on and preheats；
By requirements set the first mass flow controller and the flow value of the 3rd mass flow controller, by described heating
Add the temperature of heat pipe to required value described in control chamber regulation, not setting-out product in described sample room, open the first single-pass electromagnetic valve, the
Two single-pass electromagnetic valves and the 4th single-pass electromagnetic valve also close the 3rd single-pass electromagnetic valve, open described zero level air generator, according to
The time that described PC control unit sets preheats；
C2: detection determinand:
C21 base-line data gathers: by requirements set the first mass flow controller and the stream of the 3rd mass flow controller
Value, regulates described heating tube temperature to required value by described computer heating control case, and not setting-out product in described sample room open the
One single-pass electromagnetic valve, the second single-pass electromagnetic valve and the 4th single-pass electromagnetic valve also close the 3rd single-pass electromagnetic valve, open described zero level
Air generator, carries out base-line data collection according to the time that described PC control unit sets；
C22 determinand data acquisition: open the lid of described sample room, puts into testing sample described sample room, screws
The lid of described sample room, the flow value of the first mass flow controller and the 3rd mass flow controller keeps constant, each list
The state of three-way electromagnetic valve keeps constant, and heating tube temperature keeps constant, runs described universal electric nasus system, according to described upper
The time that machine control unit sets opens determinand data acquisition；
C3: cleaning systems: open the lid of described sample room, taking-up sample, then screw the lid of described sample room, first
The flow value of mass flow controller and the 3rd mass flow controller keeps constant, and the state of each single-pass electromagnetic valve keeps not
Becoming, heating tube temperature keeps constant, runs described universal electric nasus system, the time set according to described PC control unit
Carry out cleaning systems flow process.
Compared with prior art, the technical scheme that the application provides, the technique effect or the advantage that have be: this Electronic Nose system
Sensor array technology is combined by system with Ion mobility spectrometry, improves the detection sensitivity of conditional electronic nose, improves
The Detection accuracy of electric nasus system, in addition, system includes that sample introducing, material detection, data analysis and system control
Etc. part, functional structure is complete, can be applicable to the various fields such as environmental monitoring, medical diagnosis, food inspection, quality control.
Accompanying drawing explanation
Fig. 1 is the universal electric nasus system functional block diagram of the present invention；
Fig. 2 is the universal electric nasus system structural representation of the present invention；
Fig. 3 is sensor of the invention air chamber illustraton of model；
Fig. 4 is the air chamber cover illustraton of model of sensor of the invention air chamber；
Fig. 5 is the dividing plate illustraton of model of sensor of the invention air chamber；
Fig. 6 is that sensor of the invention air chamber assembles schematic diagram；
Fig. 7 is sensor of the invention air chamber sensor and circuit board assembling schematic diagram；
Fig. 8 is the sample room structural representation of the present invention.
Detailed description of the invention
The embodiment of the present application by providing a kind of universal electric nasus system and detection method thereof, by sensor array technology with
Ion mobility spectrometry combines, and may select and is individually examined by sensor array detection module or ion mobility spectrometry detection module
Surveying, testing result now is individually given by corresponding detection module, it is also possible to select by sensor array detection module and ion
Migrating spectrum detection module jointly to detect, now the testing result of electric nasus system is by the detection of sensor array detection module
Result is combined with the testing result of ion mobility spectrometry detection module and is drawn, the detection substantially increasing conditional electronic nasus system is accurate
Property.
In order to be better understood from technique scheme, below in conjunction with Figure of description and specific embodiment, right
Technique scheme is described in detail.
Embodiment
A kind of universal electric nasus system, as shown in Figure 1 and Figure 2, including sample injection unit, detector unit and PC control
Unit, wherein, described detector unit includes sensor array detection module and ion mobility spectrometry detection module, described sample injection unit
Including zero level air generator, the first mass flow controller MFC1, the second mass flow controller MFC2, the 3rd mass flow
Controller MFC3 and sample room, the air-flow of described zero level air generator gas outlet is on the one hand through the first mass flow controller
MFC1 flows into sample room, on the other hand flows into described ion mobility spectrometry detection module through the 3rd mass flow controller MFC3, from
The air-flow that described sample room is flowed out on the one hand flow into after mix with the air-flow flowing through the 3rd mass flow controller MFC3 described in from
Son migrates spectrum detection module, on the other hand flows into described sensor array detection mould by the second mass flow controller MFC2
Block, described sensor array detection module arranges as core with sensor array, and odiferous information is converted to the signal of telecommunication, and described ion moves
Shifting spectrum detection module, with detector based on Ion mobility spectrometry as core, utilizes the ionic mobility difference of measured matter
Realize separation and the detection of material, the signal of described sensor array detection module output and/or the detection of described ion mobility spectrometry
The signal transmission of module output is to described PC control unit, and the data received are carried out spy by described PC control unit
Levy extraction and analyze, to realize the qualitative or quantitative analysis to abnormal smells from the patient.
Described mass flow controller is in order to realize the accurate control of flow.It is right that described PC control unit can complete
The flow set of described mass flow controller also carries out the reading of real-time traffic, to guarantee the steady of flow in corresponding gas circuit
Fixed.
Described PC control unit completes to control electric nasus system overall, the operational factor of detector unit is arranged and
The data obtained are carried out feature extraction and principal component analysis, linear discriminant analysis etc. are multiple fixed by the display of its data and curves
Property and quantitative Algorithm Analysis.
In the present embodiment, described sensor array detection module includes sensor array, sensor air chamber, modulate circuit
Plate, data collecting card and single-chip microcomputer, can match suitable sensor type according to different detection targets and quantity is come
Forming described sensor array, described sensor array can be metal oxide semiconductor sensor, electrochemical sensor, sound
Surface wave gas sensor, photoionization gas sensor, digital transducer, catalytic combustion method gas sensor, heat-conducted
Gas sensor, infrared gas sensor, solid-state electrolyte gas sensor.The gas sensor of simulation output type is by adjusting
After reason circuit carries out signal conversion, Filtering Processing, it is delivered to data collecting card via connecting line, completes in data collecting card
Analogue signal, to the conversion of digital signal, is then sent to PC control unit via USB interface and carries out curve display sum
According to analysis；Digital signal sensors passes through I2C interface or other interface mode are connected with Digital Signal Processing single-chip microcomputer, then warp
PC control unit is reached by USB interface.
Described ion mobility spectrometry detection module includes detector based on Ion mobility spectrometry, adds heat pipe, computer heating control
Case and filter, described computer heating control case in order to the described temperature adding heat pipe is regulated to setting value, described in add heat pipe, filtration
Device, ion mobility spectrometry detector are sequentially connected, and the result of detection is transmitted extremely by described detector based on Ion mobility spectrometry
Described PC control unit.
Such as Fig. 3, shown in 6, described sensor air chamber include 101, two air chamber covers 102 of an air chamber body and at least one
Dividing plate 103, the air chamber body 101 of sensor air chamber is regular polygon prism, and described air chamber cover 102 is by fast gas joint 104
Connect outside trachea, including air inlet pipe and escape pipe.In Fig. 6, the direction of arrow represents installation direction.As it is shown in fig. 7, described air chamber
Body 101 is mainly used for inlaying sensor 105 and the circuit board 106 of fixing sensor pin interface, at described air chamber body 101
Side cut out correspondingly sized hole according to the size of respective sensor 105 in described sensor array, sensor 105 passes through
Threaded bolt 107 and nut 108 inlay (arrow represents installation direction) on the hole being fixed on air chamber body 101 side, and make
The sensitive surface of sensor 105 towards portion in described air chamber body, the pin of sensor 105 is towards described air chamber external body, described
Dividing plate 103 be arranged in parallel with described air chamber cover 102, as it is shown in figure 5, be provided with several air passing holes on described dividing plate 103 so that
The air-flow entering described air chamber body flows uniformly through the sensitive surface of sensor 105.For ensureing sealing and the not shadow of sensor air chamber
Ring sensor normally detect, sensor air chamber use tasteless fluid sealant to the sealing gap between sensor and air chamber body,
Fig. 4 is the air chamber cover illustraton of model of sensor air chamber.Sensor air chamber in the present embodiment uses full Teflon material just making
Six prism structures.
Described universal electric nasus system also includes solenoid-driven plate, the first three-way valve, the second three-way valve, the 3rd three-way valve
And the 4th three-way valve, wherein, the first passage of described first three-way valve connects the gas outlet of described zero level air generator, institute
State the second channel of the first three-way valve and connect described first mass flow controller by the first single-pass electromagnetic valve, the described 1st
The third channel of logical valve connects described 3rd mass flow controller by the second single-pass electromagnetic valve, the of described second three-way valve
One passage connects the gas outlet of described sample room, and the second channel of described second three-way valve connects the second matter by the 3rd one-way valve
Amount flow controller, the first passage of third channel described 3rd three-way valve of connection of described second electromagnetic valve, the described 3rd 3
The second channel of logical valve connects described 3rd mass flow controller, and the third channel of described 3rd three-way valve connects described heating
Pipe, the first passage of described 4th three-way valve connects the gas outlet of described sensor air chamber, and the second of described 4th three-way valve is led to
Road connects the gas outlet of described ion mobility spectrometry detector, and the third channel of described 4th three-way valve connects the external world, described upper
Machine control unit controls the first single-pass electromagnetic valve, the second single-pass electromagnetic valve, the 3rd single-pass electromagnetism by described solenoid-driven plate
Valve and the opening and closing of the 4th single-pass electromagnetic valve.This electric nasus system with zero level air generator as source of the gas, PC control unit
The break-make being controlled single-pass electromagnetic valve by solenoid-driven plate realizes the control to relevant position air-flow break-make, it is possible to achieve pass
Sensor array detection module works with ion mobility spectrometry detection module simultaneously or works independently.
Concrete combination is as shown in table 1.
The break-make of table 1 single-pass electromagnetic valve and two detection module duty synopsis
As shown in Figure 8, described sample room is made up of sample chamber cap 201 and sample chamber body 202, in the present embodiment, and sample
Chamber body 202 uses cylindrical exterior, sample room internal height 60mm, inner bottom surface diameter 120mm, sample chamber cap 201 and sample
Chamber body 202 uses helicitic texture to connect.The air inlet 203 of sample room and gas outlet 204 all use the fast gas of G1/4 screw thread
Joint, air inlet 203 is relative with gas outlet 204 and air inlet 203 center is less than gas outlet 204 center 15mm, with
Air inlet 203 air-flow is avoided directly to flow out from gas outlet 204.6 threaded holes it are machined with, for sample room bottom sample room
Installation fix.Sample room all uses Teflon material, is made through CNC Digit Control Machine Tool technique, is greatly reduced
The gas that determinand produces is in the absorption within sample room.
The detection method of a kind of universal electric nasus system, detects mould including sensor array detection module and ion mobility spectrometry
Block works simultaneously, sensor array detection module works independently and ion mobility spectrometry detection module works independently three kinds of Working moulds
Formula, wherein:
(1) detection method that sensor array detection module and ion mobility spectrometry detection module work simultaneously specifically include as
Lower step:
A1: described universal electric nasus system powers on and preheats；
By the flow value of each mass flow controller of requirements set, described in the regulation of described computer heating control case, add heat pipe
Temperature to required value, not setting-out product in described sample room, open whole single-pass electromagnetic valves by solenoid-driven plate, open institute
State zero level air generator, preheat according to the time that described PC control unit sets；
A2: detection determinand:
A21 base-line data gathers: by the flow value of each mass flow controller of requirements set, by described computer heating control case
Regulate described heating tube temperature to required value, not setting-out product in described sample room, open whole lists by solenoid-driven plate
Three-way electromagnetic valve, opens described zero level air generator, carries out base-line data according to the time that described PC control unit sets
Gather；
A22 determinand data acquisition: open the lid of described sample room, puts into testing sample described sample room, screws
The lid of described sample room, each mass flow controller flow value keeps constant, and the state of each single-pass electromagnetic valve keeps constant, adds
Heat pipe temperature keeps constant, runs described universal electric nasus system, carries out according to the time that described PC control unit sets
Determinand data acquisition；
A3: cleaning systems: open the lid of described sample room, taking-up sample, then screw the lid of described sample room, each matter
Amount flow controller flow value keeps constant, and the state of each single-pass electromagnetic valve keeps constant, and heating tube temperature keeps constant, runs
Described electric nasus system, carries out cleaning systems flow process according to the time that described PC control unit sets；
(2) detection method that sensor array detection module works independently specifically includes following steps:
B1: described universal electric nasus system powers on and preheats；
By requirements set the first mass flow controller and the flow value of the second mass flow controller, in described sample room
Not setting-out product, open the first single-pass electromagnetic valve and the 3rd single-pass electromagnetic valve by solenoid-driven plate and close the second single-pass electromagnetism
Valve and the 4th single-pass electromagnetic valve, open described zero level air generator, enters according to the time that described PC control unit sets
Row preheating；
B2: detection determinand:
B21 base-line data gathers: by requirements set the first mass flow controller and the stream of the second mass flow controller
Value, not setting-out product in described sample room, open the first single-pass electromagnetic valve and the 3rd single-pass electromagnetic valve by solenoid-driven plate
And close the second single-pass electromagnetic valve and the 4th single-pass electromagnetic valve, open described zero level air generator, according to described host computer control
The time that unit processed sets carries out base-line data collection；
B22 determinand data acquisition: open the lid of described sample room, puts into testing sample described sample room, screws
The lid of described sample room, the first mass flow controller and the second mass flow controller flow value keep constant, each single-pass
The state of electromagnetic valve keeps constant, runs described universal electric nasus system, the time set according to described PC control unit
Carry out determinand data acquisition；
B3: cleaning systems: open the lid of described sample room, taking-up sample, then screw the lid of described sample room, first
Mass flow controller and the second mass flow controller flow value keep constant, and the state of each single-pass electromagnetic valve keeps constant,
Run described universal electric nasus system, carry out cleaning systems flow process according to the time that described PC control unit sets；
(3) detection method that ion mobility spectrometry detection module works independently specifically includes following steps:
C1: described electric nasus system powers on and preheats；
By requirements set the first mass flow controller and the flow value of the 3rd mass flow controller, by described heating
Add the temperature of heat pipe to required value described in control chamber regulation, not setting-out product in described sample room, open the first single-pass electromagnetic valve, the
Two single-pass electromagnetic valves and the 4th single-pass electromagnetic valve also close the 3rd single-pass electromagnetic valve, open described zero level air generator, according to
The time that described PC control unit sets persistently preheats；
C2: detection determinand:
C21 base-line data gathers: by requirements set the first mass flow controller and the stream of the 3rd mass flow controller
Value, regulates described heating tube temperature to required value by described computer heating control case, and not setting-out product in described sample room open the
One single-pass electromagnetic valve, the second single-pass electromagnetic valve and the 4th single-pass electromagnetic valve also close the 3rd single-pass electromagnetic valve, open described zero level
Air generator, carries out base-line data collection according to the time that described PC control unit sets；
C22 determinand data acquisition: open the lid of described sample room, puts into testing sample described sample room, screws
The lid of described sample room, the flow value of the first mass flow controller and the 3rd mass flow controller keeps constant, each list
The state of three-way electromagnetic valve keeps constant, and heating tube temperature keeps constant, runs described universal electric nasus system, according to described upper
The time that machine control unit sets opens determinand data acquisition；
C3: cleaning systems: open the lid of described sample room, taking-up sample, then screw the lid of described sample room, first
The flow value of mass flow controller and the 3rd mass flow controller keeps constant, and the state of each single-pass electromagnetic valve keeps not
Becoming, heating tube temperature keeps constant, runs described universal electric nasus system, the time set according to described PC control unit
Carry out cleaning systems flow process.
In above-described embodiment of the application, by providing a kind of universal electric nasus system and detection method thereof, by sensor
Array technique combines with Ion mobility spectrometry, optional individually by sensor array detection module or ion mobility spectrometry detection
Module detects, and testing result now is individually given by corresponding detection module, it is also possible to select to be detected by sensor array
Module detects jointly with ion mobility spectrometry detection module, and now the testing result of electric nasus system is detected by sensor array
The testing result of module is combined with the testing result of ion mobility spectrometry detection module and is drawn, substantially increases conditional electronic nasus system
Detection accuracy.
It should be pointed out that, described above is not limitation of the present invention, the present invention is also not limited to the example above,
Change, modification that those skilled in the art are made in the essential scope of the present invention, add or replace, also should
Belong to protection scope of the present invention.
Claims (6)
1. a universal electric nasus system, it is characterised in that include sample injection unit, detector unit and PC control unit,
Wherein, described detector unit includes sensor array detection module and ion mobility spectrometry detection module, and described sample injection unit includes
Zero level air generator, the first mass flow controller, the second mass flow controller, the 3rd mass flow controller and sample
Product room, on the one hand the air-flow of described zero level air generator gas outlet flows into sample room through the first mass flow controller, another
Aspect flows into described ion mobility spectrometry detection module, air-flow one side flowed out from described sample room through the 3rd mass flow controller
Face flows into described ion mobility spectrometry detection module with the air-flow flowing through the 3rd mass flow controller after mixing, on the other hand pass through
Second mass flow controller flows into described sensor array detection module, and described sensor array detection module is for by abnormal smells from the patient
Information is converted to the signal of telecommunication, and described ion mobility spectrometry detection module is for separating determinand and detecting, described sensor
The signal of array detection module output and/or the signal transmission of described ion mobility spectrometry detection module output are to described host computer control
Unit processed, described PC control unit is for carrying out feature extraction and analysis by the data received, and exports determining of abnormal smells from the patient
Property analysis result or quantitative analysis results.
Universal electric nasus system the most according to claim 1, it is characterised in that described sensor array detection module includes
Sensor array, sensor air chamber, modulate circuit plate, data collecting card and single-chip microcomputer, the simulation of described sensor array is defeated
Go out signal after described modulate circuit plate, enter described data collecting card and be converted to digital data transmission to described host computer control
Unit processed, the digital output signal of described sensor array is through described single-chip microcomputer transmission extremely described PC control unit, described
Ion mobility spectrometry detection module includes detector based on Ion mobility spectrometry, adds heat pipe, computer heating control case and filter,
Described computer heating control case for the described temperature adding heat pipe is regulated to setting value, described in add heat pipe, filter, move based on ion
The detector moving spectral technology is sequentially connected, and described detector based on Ion mobility spectrometry is by the most described for the result transmission of detection
PC control unit.
Universal electric nasus system the most according to claim 2, it is characterised in that described sensor air chamber is full Teflon material
Matter, including an air chamber body, two air chamber covers and at least one dividing plate, in the side of described air chamber body according to described sensor
In array, the size of respective sensor sensitive surface cuts out correspondingly sized hole, and the hole being fixed on air chamber body side surface inlayed by sensor
On so that the sensitive surface of sensor towards portion in described air chamber body, the pin of sensor towards described air chamber external body, described every
Install parallel with described air chamber cover of plate is placed, and described dividing plate is provided with several air passing holes so that enter described air chamber body
Air-flow flows uniformly through the sensitive surface of sensor, and described air chamber cover is by the air inlet pipe outside gas connection connection and escape pipe.
Universal electric nasus system the most according to claim 2, it is characterised in that described universal electric nasus system also includes electricity
Magnet valve drives plate, the first three-way valve, the second three-way valve, the 3rd three-way valve and the 4th three-way valve, wherein, described first three-way valve
First passage connect described zero level air generator gas outlet, the second channel of described first three-way valve pass through the first single-pass
Electromagnetic valve connects described first mass flow controller, and the third channel of described first three-way valve is by the second single-pass electromagnetic valve even
Connecing described 3rd mass flow controller, the first passage of described second three-way valve connects the gas outlet of described sample room, described
The second channel of the second three-way valve connects the second mass flow controller by the 3rd single-pass electromagnetic valve, described second three-way valve
Third channel connects the first passage of described 3rd three-way valve, and the second channel of described 3rd three-way valve connects described 3rd mass
Flow controller, the third channel of described 3rd three-way valve connect described in add heat pipe, the first passage of described 4th three-way valve is even
Connecing the gas outlet of described sensor air chamber, the second channel of described 4th three-way magnetic valve connects described based on ion mobility spectrometry skill
The gas outlet of the detector of art, the third channel of described 4th three-way valve connects the external world, and described PC control unit passes through institute
State solenoid-driven plate and control the first single-pass electromagnetic valve, the second single-pass electromagnetic valve, the 3rd single-pass electromagnetic valve and the 4th single-pass electricity
The opening and closing of magnet valve.
Universal electric nasus system the most according to claim 1, it is characterised in that described sensor array includes burning
Thing semiconductor transducer, electrochemical sensor, sonic surface wave gas sensors, photoionization gas sensor, digital sense
Device, catalytic combustion method gas sensor, thermal conductivity gas sensor, infrared gas sensor or solid-electrolyte gas sensing
One or more combinations in device.
6. the detection method of universal electric nasus system as claimed in claim 1, it is characterised in that include that sensor array detects
Module and ion mobility spectrometry detection module work simultaneously, sensor array detection module works independently and ion mobility spectrometry detection mould
Block works independently three kinds of mode of operations, wherein:
(1) detection method that sensor array detection module and ion mobility spectrometry detection module work simultaneously specifically includes following step
Rapid:
A1: described universal electric nasus system powers on and preheats；
By the flow value of each mass flow controller of requirements set, by adding the temperature of heat pipe described in the regulation of described computer heating control case
To required value, not setting-out product in described sample room, open whole single-pass electromagnetic valves by solenoid-driven plate, open described zero
Level air generator, preheated according to the time that described PC control unit sets；
A2: detection determinand:
A21 base-line data gathers: by the flow value of each mass flow controller of requirements set, regulated by described computer heating control case
Described heating tube temperature to required value, not setting-out product in described sample room, open whole single-pass electricity by solenoid-driven plate
Magnet valve, opens described zero level air generator, carries out base-line data collection according to the time that described PC control unit sets；
A22 determinand data acquisition: open the lid of described sample room, puts into described sample room by testing sample, screws described
The lid of sample room, each mass flow controller flow value keeps constant, and the state of each single-pass electromagnetic valve keeps constant, adds heat pipe
Temperature keeps constant, runs described universal electric nasus system, carries out to be measured according to the time that described PC control unit sets
Thing data acquisition；
A3: cleaning systems: open the lid of described sample room, taking-up sample, then screw the lid of described sample room, each quality stream
Amount controller flow value keeps constant, and the state of each single-pass electromagnetic valve keeps constant, and heating tube temperature keeps constant, runs described
Electric nasus system, carries out cleaning systems flow process according to the time that described PC control unit sets；
(2) detection method that sensor array detection module works independently specifically includes following steps:
B1: described universal electric nasus system powers on and preheats；
By requirements set the first mass flow controller and the flow value of the second mass flow controller, described sample room is not put
Sample, by solenoid-driven plate open the first single-pass electromagnetic valve and the 3rd single-pass electromagnetic valve and close the second single-pass electromagnetic valve and
4th single-pass electromagnetic valve, opens described zero level air generator, carries out pre-according to the time that described PC control unit sets
Heat；
B2: detection determinand:
B21 base-line data gathers: by requirements set the first mass flow controller and the flow value of the second mass flow controller,
Not setting-out product in described sample room, open the first single-pass electromagnetic valve and the 3rd single-pass electromagnetic valve by solenoid-driven plate and close
Second single-pass electromagnetic valve and the 4th single-pass electromagnetic valve, open described zero level air generator, according to described PC control unit
The time set carries out base-line data collection；
B22 determinand data acquisition: open the lid of described sample room, puts into described sample room by testing sample, screws described
The lid of sample room, the first mass flow controller and the second mass flow controller flow value keep constant, each single-pass electromagnetism
The state of valve keeps constant, runs described universal electric nasus system, carries out according to the time that described PC control unit sets
Determinand data acquisition；
B3: cleaning systems: open the lid of described sample room, taking-up sample, then screw the lid of described sample room, the first mass
Flow controller and the second mass flow controller flow value keep constant, and the state of each single-pass electromagnetic valve keeps constant, runs
Described universal electric nasus system, carries out cleaning systems flow process according to the time that described PC control unit sets；
(3) detection method that ion mobility spectrometry detection module works independently specifically includes following steps:
C1: described electric nasus system powers on and preheats；
By requirements set the first mass flow controller and the flow value of the 3rd mass flow controller, by described computer heating control
The temperature of heat pipe is added to required value described in case regulation, not setting-out product in described sample room, open the first single-pass electromagnetic valve, second single
Three-way electromagnetic valve and the 4th single-pass electromagnetic valve also close the 3rd single-pass electromagnetic valve, open described zero level air generator, according to described
The time that PC control unit sets persistently preheats；
C2: detection determinand:
C21 base-line data gathers: by requirements set the first mass flow controller and the flow value of the 3rd mass flow controller,
By the described computer heating control case described heating tube temperature of regulation to required value, not setting-out product in described sample room, open first single
Three-way electromagnetic valve, the second single-pass electromagnetic valve and the 4th single-pass electromagnetic valve also close the 3rd single-pass electromagnetic valve, open described zero level air
Generator, carries out base-line data collection according to the time that described PC control unit sets；
C22 determinand data acquisition: open the lid of described sample room, puts into described sample room by testing sample, screws described
The lid of sample room, the flow value of the first mass flow controller and the 3rd mass flow controller keeps constant, each single-pass electricity
The state of magnet valve keeps constant, and heating tube temperature keeps constant, runs described universal electric nasus system, according to described host computer control
The time that unit processed sets opens determinand data acquisition；
C3: cleaning systems: open the lid of described sample room, taking-up sample, then screw the lid of described sample room, the first mass
The flow value of flow controller and the 3rd mass flow controller keeps constant, and the state of each single-pass electromagnetic valve keeps constant, adds
Heat pipe temperature keeps constant, runs described universal electric nasus system, carries out according to the time that described PC control unit sets
Cleaning systems flow process.
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