CN107478680A - A kind of harmful gas in vehicle detection means - Google Patents
A kind of harmful gas in vehicle detection means Download PDFInfo
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- CN107478680A CN107478680A CN201710664035.9A CN201710664035A CN107478680A CN 107478680 A CN107478680 A CN 107478680A CN 201710664035 A CN201710664035 A CN 201710664035A CN 107478680 A CN107478680 A CN 107478680A
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- detection means
- harmful gas
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
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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
- G01N33/0036—Specially adapted to detect a particular component
- G01N33/004—Specially adapted to detect a particular component for CO, CO2
-
- 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
- G01N33/0036—Specially adapted to detect a particular component
- G01N33/0047—Specially adapted to detect a particular component for organic compounds
Abstract
The present invention relates to a kind of harmful gas in vehicle detection means, it includes housing upper and lower housing portion, the housing upper sets microprocessor module and the pernicious gas detection module, PM2.5 sensor assemblies, gas pressure sensor module, alarm module and the bluetooth module that are connected with microprocessor module, lower housing portion sets power module, and power module is connected with microprocessor module；The pernicious gas detection module includes ethanol sensor, carbon monoxide transducer, benzene sensor and carbon dioxide sensor, and the microprocessor module carries out radio communication by bluetooth module and Bluetooth mobile terminal；Wherein, the ethanol sensor is heater-type structure, and the sensitive material is SnO prepared by method of electrostatic spinning2Composite nano fiber, the composite nano fiber include SnO2Porous hollow sphere, ZnO nano-wire；Also, the SnO2Porous hollow sphere is doped with WO3。
Description
Technical field
The present invention relates to gas detection technology field, more particularly to a kind of harmful gas in vehicle detection means.
Background technology
With Chinese society expanding economy, the trend for continuing, growing at top speed is presented in automobile consumption.At present, China
Big city has been enter into the peak time of automobile growth, and family car has become the instrument that people ride instead of walk, entered into many families.
For automobile while being brought convenience to people's trip, environment inside car pollutes the important topic for being increasingly becoming people's growing interest.
Automobile manufacturing process largely can be big using the materials such as plastics, rubber, fabric, paint and adhesive, these materials
The toxic and harmful gas such as amount volatilization formaldehyde, benzene.Opened, under the closed situation in compartment in air-conditioning, these toxic and harmful gas are with starting
The life security of the safe driving and occupant to driver such as caused carbon monoxide threatens in machine work.
When longer between as when parking, because motor space is closed, in-car uses plastics, rubber, fabric, paint and bonding
Numerous equipment of the materials such as agent manufacture are easier the toxic and harmful gas such as release formaldehyde in the case where the sun is exposed to the sun, and cause in-car air matter
Measure poor, if not carrying out ventilation process in time, there can be a certain degree of injury to occupant's body.
The content of the invention
The problem of harmful gas concentration rises in parking rear car for a long time for automobile, the present invention is intended to provide a kind of in-car
Harmful gas detecting device, to solve problem set forth above.
A kind of harmful gas in vehicle detection means is provided in embodiments of the invention, it is included under housing upper and housing
Portion, the housing upper set microprocessor module and the pernicious gas detection module being connected with microprocessor module, PM2.5 to pass
Sensor module, gas pressure sensor module, alarm module and bluetooth module, lower housing portion set power module, power module with it is micro-
Processor module is connected；The pernicious gas detection module includes ethanol sensor, carbon monoxide transducer, benzene sensor and two
Carbon sensor is aoxidized, the microprocessor module carries out radio communication by bluetooth module and Bluetooth mobile terminal；Wherein, the second
Alcohol sensor is heater-type structure, and the sensitive material is SnO prepared by method of electrostatic spinning2Composite nano fiber, the composite Nano
Fiber includes SnO2Porous hollow sphere, ZnO nano-wire；Also, the SnO2Porous hollow sphere is doped with WO3。
The technical scheme that embodiments of the invention provide can include the following benefits：
The present invention proposes a kind of harmful gas in vehicle detection means, can not only detect the content of harmful gas in vehicle, also
Content available for PM2.5 in detection air.If pernicious gas content is too high, alarm, which is beaten, to open the window；If air
Middle PM2.5 contents are high, then alarm closes vehicle window.Whether the present invention is opened using gas pressure sensor module detection car door, electricity
Source module uses car charging circuit, and the mounting means of the device will not destroy vehicle body.
The additional aspect of the present invention and advantage will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.It should be appreciated that the general description and following detailed description of the above are only
It is exemplary and explanatory, the present invention can not be limited.
Brief description of the drawings
Using accompanying drawing, the invention will be further described, but the embodiment in accompanying drawing does not form any limit to the present invention
System, for one of ordinary skill in the art, on the premise of not paying creative work, can also be obtained according to the following drawings
Other accompanying drawings.
Fig. 1 is the structural representation of detection means of the present invention.
Fig. 2 is the structural representation of shell of the present invention.
Embodiment
Here exemplary embodiment will be illustrated in detail, its example is illustrated in the accompanying drawings.Following description is related to
During accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represent same or analogous key element.Following exemplary embodiment
Described in embodiment do not represent and the consistent all embodiments of the present invention.On the contrary, they be only with it is such as appended
The example of the consistent apparatus and method of some aspects being described in detail in claims, of the invention.
Technical scheme is related to a kind of harmful gas in vehicle detection means, with reference to figure 1, Fig. 2, pernicious gas inspection
Surveying device includes housing upper 1 and lower housing portion 2, and housing upper 1 sets microprocessor module 101, pernicious gas detection module
103rd, PM2.5 sensor assemblies 102, gas pressure sensor module 104, alarm module 105, bluetooth module 107 and display apparatus module
106, lower housing portion 2 sets power module 108.Wherein pernicious gas detection module 103, PM2.5 sensor assemblies 102, air pressure
Sensor assembly 104, alarm module 105, bluetooth module 107, display apparatus module 106 and power module 108 respectively with microprocessor
Device module 101 is electrically connected with.Microprocessor module 101 carries out channel radio by bluetooth module 107 and Bluetooth mobile terminal 109
Letter.
In the present embodiment, the housing profile is designed as T-shaped, and housing upper 1 is detector body, the top surface of housing upper 1
Provided with display apparatus module 106, to show the content of the content of in-car each pernicious gas and PM2.5.The side of housing upper 1
Provided with ventilating opening 11, air enters from ventilating opening 11.Lower housing portion 2 is provided with power module 108, the power module of the embodiment
108 include car charging circuit and connect the rechargeable battery of the car charging circuit.The lower housing portion 2 of the embodiment is designed to cigarette lighter plug
Form, in use, being directly inserted into the embodiment in the power outlet of the cigar lighter of in-car.
In the present embodiment, the pernicious gas detection module 103 is used for the content for detecting various pernicious gases in in-car air,
Pernicious gas detection module 103 includes ethanol sensor, carbon monoxide transducer, benzene sensor assembly and dioxy in the embodiment
Change carbon sensor.PM2.5 sensor assemblies 102 are used for the content for detecting in-car PM2.5, and gas pressure sensor module 104 is used to examine
Atmospheric pressure in measuring car.
It should be noted that in the present embodiment, the ethanol sensor module is heater-type structure, including：By outer surface certainly
Alumina ceramic tube with 2 parallel and discrete annular gold electrodes, the sensitive material coated in ceramic pipe surface, through pottery
The nichrome heating coil of porcelain tube is formed, and two platinum filament pins are connected with each gold electrode；Wherein, the sensitive material is quiet
SnO prepared by electrical spinning method2Composite nano fiber, the composite nano fiber include SnO2Porous hollow sphere, ZnO nano-wire；And
And the SnO2Porous hollow sphere is doped with WO3, wherein, WO3With SnO2Mass ratio is 1:58.
In sensitive material prepared by sensor field, Electrospinning, there is big specific surface area and fiber to possess micro-
Pore structure, these features all with beneficial to it as response of the sensitive material for gas.However, used at present in technical scheme
Method of electrostatic spinning prepares SnO2Composite nano fiber is few as the technical scheme of sensitive material；, will in technical solution of the present invention
SnO2Porous hollow sphere, ZnO nano-wire have been prepared by mixing into SnO2Composite nano fiber, the thus sensor as sensitive material
With the advantages of sensitivity is high, response is rapid.
Meanwhile the SnO2Porous hollow sphere is doped with WO3, at present to the SnO of various nanostructureds2Investigation of materials increases, right
The research of the material mainly by various means raising sensor performance, the metal or metal oxide of doping mainly have Zn,
Pt, CuO, ZnO etc., and adulterate WO3Technical scheme it is few；In the present invention, by doping, WO is prepared for3The SnO of doping2It is porous
Hollow ball, the WO of the doping3Acted synergistically with ZnO nano-wire, positive role is played in sensitivity and response time to sensor.
In above-mentioned sensitive material, the ZnO nano-wire length is 400nm, a diameter of 30nm.
ZnO is a kind of metal oxide semiconductor, and it suffers from practical application in fields such as sensor, lithium battery, catalysis,
In technical solution of the present invention, by ZnO nano-wire and SnO2Porous hollow sphere is combined, and composite Nano fibre is prepared using method of electrostatic spinning
Dimension, has benefited from the one-dimensional nano structure of ZnO nano-wire, the ZnO nano-wire is to discrete SnO2Porous hollow sphere plays connection and made
With the conductive path of carrier can be formed, simultaneously because ZnO and SnO2Equally it is n-type semiconductor material with wide forbidden band, Liang Zhejin
Bandwidth is close, substantially increases the electrical conductivity of composite nano fiber so that the response time of sensor reduces.
In above-mentioned sensitive material, the SnO2Porous hollow sphere is prepared by template, hydro-thermal method of carbon paste ball, the SnO2
The particle diameter of porous hollow sphere is 200nm, and it is the porous crust structure being made up of a large amount of nano particles.
SnO2It is a kind of metal oxide gas sensitive material being developed earliest, SnO2Because having, cost is low, stability
Well, attracted attention the advantages that high sensitivity, with the development of nanometer technology, to the SnO of various nanostructureds2Investigation of materials increases
It is more.In the present invention, the carbon paste ball prepared using hydro-thermal method has hydrophily, and surface has-OH and C-O functional groups, these functions
The presence of group makes metal ion be easy to close with carbon paste chou, forms the hydroxide of metal and is distributed its surface, then, passes through
High-temperature calcination, the carbon atom in carbon paste ball is oxidized to be discharged in the form of carbon dioxide, so as to form metallic oxide hollow sphere,
That is SnO2Porous hollow sphere, its porous crust structure are advantageous to the absorption to gas, add the sensitivity of sensitive material.
By above-mentioned SnO2After porous hollow sphere, ZnO nano-wire mix in proportion, it is added in poly-vinyl alcohol solution, obtains
To spinning solution, electrostatic spinning is carried out, obtains composite cellulosic membrane, calcined after removing polyvinyl alcohol, obtain composite Nano fibre
Dimension；In above-mentioned spinning solution, polyvinyl alcohol mass percent is 9wt.%；In above-mentioned composite nano fiber, SnO2Porous hollow
Ball, the mass ratio of ZnO nano-wire are 5:1.
The SnO2The preparation process of composite nano fiber：
Step 1,9g glucose be added in 50ml deionized waters stirred, then move into solution in water heating kettle,
8h is heated under 180 DEG C of constant temperature of drying box, after reaction terminates, naturally cools to room temperature, is centrifuged successively with alcohol and deionized water
Separation, washing, after repeated washing three times, dark brown product carbon paste ball is obtained, it is standby in 60 DEG C of dry 12h；By 3.8mmol
Wolframic acid and stannic chloride are added to 60ml ethanol and stirred in the mixed liquor of 8ml water, form solution A, then add into solution A
Enter 35mmol urea, stir to form solution B, the 32mmol carbon pastes ball of above-mentioned preparation is added into solution B, ultrasonic disperse 2h,
Resulting solution is stood into 30h, centrifuged, washing, in 80 DEG C of dry 12h, is finally dried dried product at 580 DEG C
2h, obtain WO3Adulterate SnO2Porous hollow sphere；Take 0.8g polyvinyl alcohol to be put into the conical flask equipped with 10g distilled water, be incubated
It is stirred continuously at 90 DEG C, is allowed to be completely dissolved, naturally cools to room temperature；Then ZnO nano-wire and WO obtained above are added3Mix
Miscellaneous SnO2Porous hollow sphere, continue to stir 6h, obtain spinning solution；
Step 2, above-mentioned spinning solution is fitted into spinneret pipe, inserts 10cm copper wire as positive pole, aluminium foil conduct
Receiver board, it is negative pole, electrostatic spinning when institute making alive is 19.5kV, and distance is 21.5cm between spinning head and receiver board, is carried out
Electrostatic spinning, obtain WO3Adulterate SnO2Porous hollow sphere/ZnO nano-wire/polyvinyl alcohol composite fiber film；By above-mentioned composite fibre
Film makes annealing treatment 5h at 700 DEG C, to remove high-molecular polyivnyl alcohol, obtains SnO2Composite nano fiber.
Then, by above-mentioned SnO2After composite nano fiber is configured to slurry, coated in ceramic pipe surface, after preparing electrode,
Produce ethanol sensor module of the present invention.
It should be noted that the microprocessor module 101 of the present embodiment is single chip machine controlling circuit, those skilled in the art
Understand, microprocessor module 101 can also use ARM (Advanced RISC Machines) processor control circuit also to realize
The function of information processing.
In the present embodiment, the alarm module 105 is acoustic-optic alarm, the pernicious gas content in in-car air is detected
During more than established standardses value, sound and light alarm is carried out.When pernicious gas content is higher, alarm indication light is red；Work as PM2.5
When content is higher, alarm indication light is yellow.Filled skilled person will appreciate that alarm module 105 can also be light warning
Put or audible alarm unit.In addition, Bluetooth mobile terminal 109 is smart mobile phone in the embodiment, can also be tablet personal computer or
Blue Tooth remote controller.
In use, the detection means is mounted directly in the car in the power outlet of cigar lighter, installation is simple and convenient, takes
Space very little, without extra wiring.Stop after a period of time, when car owner is again turned on in-car moment, interior pressure can occur
Change；Gas pressure sensor module 104 built in it detects in-car atmospheric pressure, and testing result is passed into microprocessor module
101, after microprocessor module 101 judges that in-car pressure changes, by bluetooth module 107 by pernicious gas detection module
The current detection result of 103 and PM2.5 sensor assemblies 102 is sent on the smart mobile phone of car owner.
When the pernicious gas too high levels such as in-car ethanol, benzene, carbon monoxide or carbon dioxide, beat and open the window；When
When detecting that PM2.5 contents are higher, then vehicle window is closed.
Built-in rechargeable battery of the present invention, when automobile is not actuated, it is the various components power supply in detector body, works as vapour
After car starts, the power outlet of cigar lighter is charged for rechargeable battery.Because the present invention is self-powered, can also be examined when car is not actuated
Survey in-car air quality.Testing result is sent to microprocessor module 101, microprocessor module by sensor of the invention module
101 by testing result compared with preset value, control alarm module 105 to carry out alarm during superelevation setting value.
The preferred mode of the present invention is the foregoing is only, is not intended to limit the invention, it is all in the spiritual and former of the present invention
Within then, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.
Claims (10)
1. a kind of harmful gas in vehicle detection means, it is characterised in that it includes housing upper and lower housing portion, on the housing
Portion sets microprocessor module and the pernicious gas detection module, PM2.5 sensor assemblies, the air pressure that are connected with microprocessor module
Sensor assembly, alarm module and bluetooth module, lower housing portion set power module, power module and microprocessor module phase
Even；The pernicious gas detection module includes ethanol sensor, carbon monoxide transducer, benzene sensor and carbon dioxide sensing
Device, the microprocessor module carry out radio communication by bluetooth module and Bluetooth mobile terminal；Wherein, the ethanol sensor is
Heater-type structure, the sensitive material are SnO prepared by method of electrostatic spinning2Composite nano fiber, the composite nano fiber include
SnO2Porous hollow sphere, ZnO nano-wire；Also, the SnO2Porous hollow sphere is doped with WO3。
A kind of 2. harmful gas in vehicle detection means according to claim 1, it is characterised in that the SnO2Composite Nano
In fiber, SnO2Porous hollow sphere, the mass ratio of ZnO nano-wire are 5:1；The SnO2Doped with WO in porous hollow sphere3, WO3With
SnO2Mass ratio is 1:58.
A kind of 3. harmful gas in vehicle detection means according to claim 2, it is characterised in that the SnO2Porous hollow sphere
It is to be prepared by template, hydro-thermal method of carbon paste ball, the SnO2The particle diameter of porous hollow sphere is 200nm, and it is by a large amount of nanometers
The porous crust structure that grain is formed.
A kind of 4. harmful gas in vehicle detection means according to claim 2, it is characterised in that the ZnO nano-wire length
For 400nm, a diameter of 30nm.
A kind of 5. harmful gas in vehicle detection means according to claim 2, it is characterised in that the SnO2Composite Nano is fine
The preparation process of dimension：
Step 1,9g glucose is added in 50ml deionized waters stirred, then move into solution in water heating kettle, dry
8h is heated under dry 180 DEG C of constant temperature of case, after reaction terminates, naturally cools to room temperature, centrifuged successively with alcohol and deionized water,
Washing, after repeated washing three times, dark brown product carbon paste ball is obtained, it is standby in 60 DEG C of dry 12h；By 3.8mmol wolframic acids
It is added to 60ml ethanol with stannic chloride and is stirred in the mixed liquor of 8ml water, forms solution A, then added into solution A
35mmol urea, stirs to form solution B, the 32mmol carbon pastes ball of above-mentioned preparation is added into solution B, ultrasonic disperse 2h will
Resulting solution stands 30h, centrifuges, washing, in 80 DEG C of dry 12h, finally dries dried product at 580 DEG C
2h, obtain WO3Adulterate SnO2Porous hollow sphere；Take 0.8g polyvinyl alcohol to be put into the conical flask equipped with 10g distilled water, be incubated
It is stirred continuously at 90 DEG C, is allowed to be completely dissolved, naturally cools to room temperature；Then ZnO nano-wire and WO obtained above are added3Mix
Miscellaneous SnO2Porous hollow sphere, continue to stir 6h, obtain spinning solution；
Step 2, above-mentioned spinning solution is fitted into spinneret pipe, a piece 10cm of insertion copper wire is used as positive pole, and aluminium foil is as reception
Plate, it is negative pole, electrostatic spinning when institute making alive is 19.5kV, and distance is 21.5cm between spinning head and receiver board, carries out electrostatic
Spinning, obtain WO3Adulterate SnO2Porous hollow sphere/ZnO nano-wire/polyvinyl alcohol composite fiber film；Above-mentioned composite cellulosic membrane is existed
5h is made annealing treatment at 700 DEG C, to remove high-molecular polyivnyl alcohol, obtains SnO2Composite nano fiber.
A kind of 6. harmful gas in vehicle detection means according to claim 1, it is characterised in that the microprocessor module
For arm processor control circuit or single chip machine controlling circuit.
7. a kind of harmful gas in vehicle detection means according to claim 1, it is characterised in that also including display mould
Block, display apparatus module are connected with microprocessor module.
8. a kind of harmful gas in vehicle detection means according to claim 1, it is characterised in that the alarm module is lamp
Light alarm device, audible alarm unit or acoustic-optic alarm.
A kind of 9. harmful gas in vehicle detection means according to claim 1, it is characterised in that the Bluetooth mobile terminal
For smart mobile phone or it is tablet personal computer, or is blue Tooth remote controller.
A kind of 10. harmful gas in vehicle detection means according to claim 1, it is characterised in that the power module bag
Include car charging circuit and connect the rechargeable battery of the car charging circuit.
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| CN108709915A (en) * | 2018-09-01 | 2018-10-26 | 罗杰雄 | A kind of harmful gas in vehicle detection device |
| CN109709192A (en) * | 2018-12-14 | 2019-05-03 | 复旦大学 | It is a kind of based on tungsten oxide/tin oxide core-shell nano chip architecture air-sensitive nano material, preparation process and its application |
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| CN108709915A (en) * | 2018-09-01 | 2018-10-26 | 罗杰雄 | A kind of harmful gas in vehicle detection device |
| CN108709915B (en) * | 2018-09-01 | 2021-11-19 | 山东多瑞电子科技有限公司 | Harmful gas detection device in car |
| CN109709192A (en) * | 2018-12-14 | 2019-05-03 | 复旦大学 | It is a kind of based on tungsten oxide/tin oxide core-shell nano chip architecture air-sensitive nano material, preparation process and its application |
| CN109709192B (en) * | 2018-12-14 | 2022-06-17 | 复旦大学 | Gas-sensitive nanomaterial based on tungsten oxide/tin oxide core-shell nanosheet structure, preparation process and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107478680B (en) | 2018-11-23 |
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