CN106042990A - Safety seat for vehicle - Google Patents
Safety seat for vehicle Download PDFInfo
- Publication number
- CN106042990A CN106042990A CN201610545836.9A CN201610545836A CN106042990A CN 106042990 A CN106042990 A CN 106042990A CN 201610545836 A CN201610545836 A CN 201610545836A CN 106042990 A CN106042990 A CN 106042990A
- Authority
- CN
- China
- Prior art keywords
- sensitive layer
- insulating ceramics
- powder
- sensor
- calcium carbonate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 142
- 239000000919 ceramic Substances 0.000 description 118
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 104
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 80
- 239000000843 powder Substances 0.000 description 78
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 75
- 239000007789 gas Substances 0.000 description 75
- 229910002092 carbon dioxide Inorganic materials 0.000 description 73
- 239000000463 material Substances 0.000 description 55
- 229910000019 calcium carbonate Inorganic materials 0.000 description 52
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 45
- 239000011858 nanopowder Substances 0.000 description 38
- 238000010438 heat treatment Methods 0.000 description 35
- 238000005260 corrosion Methods 0.000 description 32
- 239000008367 deionised water Substances 0.000 description 30
- 229910021641 deionized water Inorganic materials 0.000 description 30
- 238000012360 testing method Methods 0.000 description 30
- 239000004570 mortar (masonry) Substances 0.000 description 25
- 238000002360 preparation method Methods 0.000 description 24
- 238000003756 stirring Methods 0.000 description 20
- 230000004044 response Effects 0.000 description 18
- 230000035945 sensitivity Effects 0.000 description 18
- 238000000034 method Methods 0.000 description 17
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 15
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 15
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 15
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 15
- 230000001680 brushing effect Effects 0.000 description 15
- 239000011248 coating agent Substances 0.000 description 15
- 238000000576 coating method Methods 0.000 description 15
- 239000010949 copper Substances 0.000 description 15
- JYTUFVYWTIKZGR-UHFFFAOYSA-N holmium oxide Inorganic materials [O][Ho]O[Ho][O] JYTUFVYWTIKZGR-UHFFFAOYSA-N 0.000 description 15
- 230000007797 corrosion Effects 0.000 description 11
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 10
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 10
- 238000001816 cooling Methods 0.000 description 10
- 239000006185 dispersion Substances 0.000 description 10
- 238000001035 drying Methods 0.000 description 10
- 230000002401 inhibitory effect Effects 0.000 description 10
- 238000001556 precipitation Methods 0.000 description 10
- 239000002904 solvent Substances 0.000 description 10
- -1 infra red type Chemical compound 0.000 description 7
- 239000001569 carbon dioxide Substances 0.000 description 6
- 230000008859 change Effects 0.000 description 6
- 238000001514 detection method Methods 0.000 description 6
- 229910044991 metal oxide Inorganic materials 0.000 description 6
- 150000004706 metal oxides Chemical class 0.000 description 6
- 239000011148 porous material Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000005245 sintering Methods 0.000 description 6
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 5
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 5
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 5
- 229910010413 TiO 2 Inorganic materials 0.000 description 5
- 229910021627 Tin(IV) chloride Inorganic materials 0.000 description 5
- 235000011114 ammonium hydroxide Nutrition 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 238000000354 decomposition reaction Methods 0.000 description 5
- 239000013530 defoamer Substances 0.000 description 5
- 239000002270 dispersing agent Substances 0.000 description 5
- 238000005538 encapsulation Methods 0.000 description 5
- 239000003822 epoxy resin Substances 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 5
- 238000000227 grinding Methods 0.000 description 5
- 239000011796 hollow space material Substances 0.000 description 5
- 238000009413 insulation Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 229910017604 nitric acid Inorganic materials 0.000 description 5
- 235000006408 oxalic acid Nutrition 0.000 description 5
- 239000003973 paint Substances 0.000 description 5
- 238000011056 performance test Methods 0.000 description 5
- 229920000647 polyepoxide Polymers 0.000 description 5
- 238000013112 stability test Methods 0.000 description 5
- HPGGPRDJHPYFRM-UHFFFAOYSA-J tin(iv) chloride Chemical compound Cl[Sn](Cl)(Cl)Cl HPGGPRDJHPYFRM-UHFFFAOYSA-J 0.000 description 5
- 238000004448 titration Methods 0.000 description 5
- 238000004506 ultrasonic cleaning Methods 0.000 description 5
- 238000005406 washing Methods 0.000 description 5
- 238000005303 weighing Methods 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 239000011701 zinc Substances 0.000 description 5
- 229910052725 zinc Inorganic materials 0.000 description 5
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 5
- 229910000368 zinc sulfate Inorganic materials 0.000 description 5
- 239000011686 zinc sulphate Substances 0.000 description 5
- 235000009529 zinc sulphate Nutrition 0.000 description 5
- 238000011084 recovery Methods 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 239000007784 solid electrolyte Substances 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 150000001450 anions Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000029553 photosynthesis Effects 0.000 description 1
- 238000010672 photosynthesis Methods 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000004449 solid propellant Substances 0.000 description 1
- 238000010897 surface acoustic wave method Methods 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/002—Seats provided with an occupancy detection means mounted therein or thereon
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/12—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid
- G01N27/125—Composition of the body, e.g. the composition of its sensitive layer
- G01N27/127—Composition of the body, e.g. the composition of its sensitive layer comprising nanoparticles
Abstract
The invention relates to a safety seat for a vehicle. The safety seat for the vehicle comprises a CO2 sensor and a controller. The CO2 sensor is configured to determine the CO2 concentration in a cabin at which the safety seat for the vehicle is located when the vehicle is not running; the controller is configured to determine that the cabin is occupied by riders based on the concentration in the cabin when the vehicle is not running.
Description
Technical field
The application relates to safety seat field, a kind of safety seat used for vehicle.
Background technology
Carbon dioxide is the most colourless, tasteless a kind of, the gas of stable chemical nature, and current result of study refers to
Going out, in air, the content rising of carbon dioxide can cause greenhouse effect, and final result can cause global warming, on the earth
Vegeto-animal existence produces and threatens, the appearance of the series of problems such as sea level rise, extreme weather all excessive with carbon dioxide
Discharge relevant；It addition, the photosynthesis of plant needs the participation of carbon dioxide, the aspect such as green house of vegetables, biotechnology is right
Monitoring and control in gas concentration lwevel has strict demand.
For the vehicles, its Spatial General 6 R is airtight, atmosphere draught-free, easily accumulates a large amount of CO2 gas in main cabin
Body, when CO2 gas excess, can damage human body.
Summary of the invention
For overcoming problem present in correlation technique, the application provides a kind of safety seat used for vehicle.
The present invention is achieved through the following technical solutions:
A kind of safety seat used for vehicle, it is characterised in that including: seat body；
CO2 gas sensor, it is configured to when these vehicles are inoperative determine that this traffic safety seat is present
CO2 concentration in cabin；And
Controller, it is configured to when these vehicles are inoperative determine described passenger cabin quilt based on the concentration in passenger cabin
Occupant occupies.
Preferably, described CO2 gas sensor is positioned at position at by volume calculate lower 1/4th of described seat body.
The technical scheme that embodiments herein provides can include following beneficial effect:
1. the safety seat involved by the application, is provided with CO2 gas sensor, CO2 gas sensing on safety seat
The sensitive material of device uses perovskite type metal oxide HoFeO3 nano-powder and SnO2 powder body, and two kinds of sensitive materials are the most right
CO2 gas possesses selectivity, and bi-material compound use ensure that the response to CO2 gas of this gas sensor.Insulating ceramics
Using the square tabular of hollow structure, the top and bottom of insulating ceramics are two-layer sensitive layer, and are HoFeO3 nano powder above
Body at internal layer, SnO2 powder body at outer layer, be below SnO2 powder body at internal layer, HoFeO3 nano-powder at outer layer, this kind of structure sets
Put the feedback to CO2 response signal and play the effect of complementation, improve the accuracy of feedback signal.
2. the safety seat involved by the application, in the CO2 gas sensor preparation process that it uses, passes at CO2 gas
Adding pore creating material calcium carbonate in the sensitive layer of sensor, in sintering process, calcium carbonate can produce gas effusion, so that quick
Sense layer forms loose structure, additionally, the density of loose structure is set to, internal layer is little, outer layer big, and this loose structure substantially increases
Sensitive layer and the contact area of CO2 gas, improve sensitivity.
3. the safety seat involved by the application, in the CO2 gas sensor preparation process that it uses, passes at CO2 gas
It is coated with the preserving timber bed of material, the waterproof and corrosion resistance of this anti-corrosion material energy lift gas sensor outside the sensitive layer of sensor comprehensively
Can, extend its service life, and then improve the monitoring situation to the change of CO2 gas concentration；Further, since CO2 gas passes
Sensor preparation technology is simple and convenient and swift, therefore, has the prospect of potential large-scale promotion application.
Aspect and advantage that the application adds will part be given in the following description, and part will become from the following description
Obtain substantially, or recognized by the practice of the application.It should be appreciated that above general description and details hereinafter only describe
It is exemplary and explanatory, the application can not be limited.
Accompanying drawing explanation
Accompanying drawing herein is merged in description and constitutes the part of this specification, it is shown that meet the enforcement of the present invention
Example, and for explaining the principle of the present invention together with description.
Fig. 1 is the structural representation according to the safety seat shown in an exemplary embodiment.
Fig. 2 is the structural representation according to the CO2 gas sensor shown in an exemplary embodiment.
Fig. 3 is the preparation method flow chart according to the CO2 gas sensor shown in an exemplary embodiment.
Wherein: 11-seat body, 12-CO2 sensor, 13-controller；
1-insulating ceramics, 2-electrode, 3-sensitive layer A, 4-sensitive layer B.
Detailed description of the invention
Here will illustrate exemplary embodiment in detail, its example represents in the accompanying drawings.Explained below relates to
During accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represents same or analogous key element.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the present invention.On the contrary, they are only with the most appended
The example of the apparatus and method that some aspects that described in detail in claims, the present invention are consistent.
Following disclosure provides many different embodiments or example for realizing the different structure of the application.For letter
Changing disclosure herein, hereinafter parts and setting to specific examples are described.Certainly, they are the most merely illustrative, and
It is not intended to limit the application.Additionally, the application can in different examples repeat reference numerals and/or letter.This heavy
It is for purposes of simplicity and clarity again, itself is more than the relation between various embodiment being discussed and/or arranging.This
Outward, the various specific technique that this application provides and the example of material, but those of ordinary skill in the art it can be appreciated that
The applicability of other techniques and/or the use of other materials.It addition, fisrt feature described below Second Eigenvalue " on "
Structure can include that the first and second features are formed as the embodiment directly contacted, it is also possible to include that other feature is formed at
Embodiment between first and second features, such first and second features are not likely to be directly contact.
In the description of the present application, it should be noted that unless otherwise prescribed and limit, term " is installed ", " being connected ",
" connect " and should be interpreted broadly, for example, it may be mechanically connected or electrical connection, it is also possible to be the connection of two element internals, can
Being to be joined directly together, it is also possible to be indirectly connected to by intermediary, for the ordinary skill in the art, can basis
Concrete condition understands the concrete meaning of above-mentioned term.
Gas sensor divides according to matrix material, can be divided into burning system organic polymer system solid electrolyte
System, divides according to tested gas, can be divided into Pollution Gas, toxic gas, imflammable gas and oxygen-containing gas sensing
Device etc..Have polytype currently for the sensor in terms of carbon dioxide, such as infra red type, solid electrolyte, resistor-type,
Capacitor type, surface acoustic wave type and semi-conductor type etc., wherein semi-conductor type carbon dioxide sensor is in sensitivity, response time, steady
Qualitative aspect has advantage.
Perovskite structural material typically refers to have ABX3The compound of type structure, in this compound, A, B and X are respectively big
Radius cation, minor radius cation and anion；Perovskite composite oxides possesses the crystal structure of uniqueness, especially mixes at it
The crystal defect structure formed after miscellaneous and performance, can be applied to solid fuel cell, solid electrolyte, sensor, solid electricity
The fields such as resistance device.In recent years, perovskite oxide (ABO3), due to its good selectivity, high sensitivity and stability, is especially made
For CO2Sensor gas sensitive obtains development greatly.SnO2 belongs to cubic system, has rutile structure, has N-shaped half
Conductor features, chemical property is more stable.
At present for gas sensor, no matter in technique or in performance, there is the place that can not meet demand, exist
The problems such as such as poor stability, big, the catalyst poisoning of drift, thus it is desirable to develop preferable novel sensor, or
It is improved.Sensor of the invention is based on perovskite material, in combination with SnO2 nano material, design one detection
The gas sensor of CO2.
Embodiment one
Fig. 1 is according to the one safety seat used for vehicle shown in an exemplary embodiment, it is characterised in that including:
Seat body 11；
CO2 gas sensor 12, it is configured to when these vehicles are inoperative determine this traffic safety seat place
CO2 concentration in passenger cabin；And
Controller 13, it is configured to when these vehicles are inoperative determine described passenger cabin based on the concentration in passenger cabin
Occupied by occupant.
Preferably, described CO2 gas sensor 12 is positioned at by volume calculate lower 1/4th of described seat body 11
Position.
Preferably, such as Fig. 2, described CO2 gas sensor 12 is by insulating ceramics 1, electrode 2, sensitive layer and heating unit group
Become；Described insulating ceramics 1 is the rectangular shape of hollow along its length；Described electrode 2 is two annular copper electrodes, respectively
Be positioned at the both sides of the length direction of described insulating ceramics 1, cover the leading flank of described insulating ceramics 1, trailing flank, above and under
Face, the width of described electrode 2 is 0.5cm；Described heating unit is positioned at inside described insulating ceramics 1 hollow；Described sensitive layer divides
For sensitive layer A3 and sensitive layer B4, described sensitive layer A3 and sensitive layer B4 has the loose structure that pore creating material calcium carbonate is formed, institute
State the above of insulating ceramics and be followed successively by sensitive layer A3, sensitive layer B4 from inside to outside, depend on from outside to inside below described insulating ceramics
Secondary for sensitive layer A3, sensitive layer B4；In described sensitive layer A3, sensitive material is HoFeO3 nano-powder；Described sensitive layer B4 is sensitive
Material is SnO2 powder body.
Preferably, such as Fig. 3, the preparation of described CO2 gas sensor 12 comprises the following steps:
Step one, prepares insulating ceramics 1
Being chosen for the square tabular insulating ceramics that length × width × height 4 is cm × 2cm × 1cm, insulating ceramics is through acetone, second
Alcohol ultrasonic cleaning 10min, dries, and is then deposited with one layer of Cu film, as electrode, Cu film on the length direction both sides of insulating ceramics
Thickness is 800nm.
Step 2, prepares sensitive material:
Being mainly composed of perovskite type metal oxide HoFeO3 nano-powder in sensitive layer A3, its preparation process is as follows:
First weigh the Ho2O3 of 25g, and weigh appropriate Fe according to the ratio that Ho2O3:Fe (NO3) 3 mol ratio is 1:2
(NO3) 3 9H2O, according to n (Ho3++Fe3+): the mol ratio of n (citric acid)=1:3 weighs proper amount of citric acid, by Ho2O3
Being dissolved in nitric acid and form solution A, Fe (NO3) 9H2O and citric acid are dissolved in deionized water formation solution B, solution A and solution B are each
From ultrasonic 10min, then solution A and solution B are mixed, form solution C；Solution C is placed in water-bath crucible, under the conditions of 90 DEG C
Gel, until gel state, is then taken out, is placed in drying baker by heating in water bath, dries at 120 DEG C；Then xerogel is used
Mortar is fully ground, and is placed in Muffle furnace, heating and thermal insulation 2h at 350 DEG C, and then temperature is increased to 740 DEG C, and anneal 8h, natural
Cooling, rear regrinding, obtain HoFeO3 nano-powder.
Being mainly composed of SnO2 powder body in sensitive layer B4, its preparation process is as follows:
First, weighing appropriate SnCl4 5H2O, be dissolved in deionized water, preparation becomes the solution of 0.2M, is doped and added to
Molar percentage is the ZnSO4 of 7%, then according to n (Sn4+): the mol ratio of n (citric acid)=17:1 adds citric acid, ultrasonic
Process 30min, by the ammonia water titration of 0.2M, obtain Sn (OH) 4 precipitation, precipitation is filtered, after washing by the oxalic acid back dissolving of 0.5M,
Obtain Sn (OH) 4 colloidal sol, then dry and obtain SnO2 powder body after concentrating heat treatment.
Step 3, prepares anti-corrosion material
Epoxy resin is mixed in addition dispersion cup with ethyl acetate and n-butyl alcohol equal solvent by a certain percentage,
After 100rpm/min stirring lower addition zinc powder and dispersant, levelling agent, defoamer stir, add color stuffing high speed dispersion 5
～10min, it is subsequently adding nano TiO 2 and stirs, adjust viscosity with solvent, stand 5～8min, obtain the anticorrosion rich in zinc
Coating；
Step 4, prepares gas sensor
A) take HoFeO3 nano-powder that step obtains and calcium carbonate powder mixes in mortar, add a small amount of deionized water
Grinding 2h, be evenly coated in step one above insulating ceramics by ground pastel, thickness is 5 μm, forms sensitive layer A3；
B) take SnO2 powder body and calcium carbonate powder to mix in mortar, add a small amount of deionized water and grind 2h, by ground
Pastel be evenly coated in step one below insulating ceramics, thickness is 5 μm, formed sensitive layer B4；
C) take SnO2 powder body and calcium carbonate powder to mix in mortar, add a small amount of deionized water and grind 2h, by ground
Pastel be evenly coated in step one above insulating ceramics, thickness is 3 μm, formed sensitive layer B4；
D) take HoFeO3 nano-powder and calcium carbonate powder to mix in mortar, add a small amount of deionized water and grind 2h, will
Ground pastel is evenly coated in step one below insulating ceramics, and thickness is 3 μm, forms sensitive layer A3；
E () will scribble insulating ceramics 90 DEG C of dry 2h in drying baker of sensitive layer, put into by dried insulating ceramics
Batch-type furnace sinters at 590 DEG C, sensitive layer A3 and sensitive layer B4 can form loose structure, then due to the decomposition of calcium carbonate
Its natural cooling is treated in taking-up；
(f) learn from else's experience step 3 prepare anticorrosive paint, a little stirring after, be coated on the insulating ceramics processed through step e
On, put and be dried 5～10min at room temperature, be then coated with the second layer and third layer, often coat once, dry 5～10min, i.e.
Available three layers of corrosion-inhibiting coating, corrosion-inhibiting coating gross thickness is 5～10 μm；
G () encapsulates: heating unit is assembled into the hollow space of the insulating ceramics processed through step f, to insulating ceramics
Electrode and heating unit welding lead, encapsulation.
Experiment test:
(1) sensitivity, response time and stability test: gas sensor is accessed test circuit, and is placed on
In test chamber, select suitably load, cavity is sealed.First, sensor resistance value in pure air is calculated, so
After according to finite concentration, certain speed inject gas CO2 to be measured, it is ensured that invariablenes pressure of liquid in cavity, calculate in certain concentration
Resistance value in CO2 gas, draws the sensitivity of sensor；Use the method,
Above insulating ceramics, in sensitive layer A, HoFeO3 nano-powder and calcium carbonate powder mol ratio are 12:1, sensitive layer
In B, SnO2 powder body and calcium carbonate powder mol ratio are 9:1；
Below insulating ceramics, in sensitive layer B, SnO2 powder body and calcium carbonate powder mol ratio are 12:1, in sensitive layer A
HoFeO3 nano-powder and calcium carbonate powder mol ratio are 9:1, and, when insulating ceramics sintering time is 5h,
Calculate the response time of sensor, repeatability data.Test finds, under the CO2 environment of 100ppm, this
The optimum sensitivity of bright gas sensor is 6.3, and response time is 15s, repeats 200 tests, and results change is less than 5%.
(2) waterproof anti-corrosion performance test
The sensor of not brushing anti-corrosion material and the sensor being painted with anti-corrosion material be respectively placed in water, 1%
HCl solution and 5% NaOH solution in, above-mentioned dip time is 2d, 7d, 15d, 20d.Test result indicate that, brushing is not anti-
The sensor of rotten material layer occurs as soon as blushing 7d when, and the brushing preserving timber bed of material just starts appearance when 20d
Slight blushing, its water resistance is significantly higher.In terms of decay resistance, also show identical phenomenon, explanation
The corrosive nature of its acid-fast alkali-proof is good.
The application safety seat can the CO2 content that exceeds standard of detection promptly and accurately, prompt passengers notes personal safety.
Embodiment two
Fig. 1 is according to the one safety seat used for vehicle shown in an exemplary embodiment, it is characterised in that including:
Seat body 11；
CO2 gas sensor 12, it is configured to when these vehicles are inoperative determine this traffic safety seat place
CO2 concentration in passenger cabin；And
Controller 13, it is configured to when these vehicles are inoperative determine described passenger cabin based on the concentration in passenger cabin
Occupied by occupant.
Preferably, described CO2 gas sensor 12 is positioned at by volume calculate lower 1/4th of described seat body 11
Position.
Preferably, such as Fig. 2, described CO2 gas sensor 12 is by insulating ceramics 1, electrode 2, sensitive layer and heating unit group
Become；Described insulating ceramics 1 is the rectangular shape of hollow along its length；Described electrode 2 is two annular copper electrodes, respectively
Be positioned at the both sides of the length direction of described insulating ceramics 1, cover the leading flank of described insulating ceramics 1, trailing flank, above and under
Face, the width of described electrode 2 is 0.5cm；Described heating unit is positioned at inside described insulating ceramics 1 hollow；Described sensitive layer divides
For sensitive layer A3 and sensitive layer B4, described sensitive layer A3 and sensitive layer B4 has the loose structure that pore creating material calcium carbonate is formed, institute
State the above of insulating ceramics and be followed successively by sensitive layer A3, sensitive layer B4 from inside to outside, depend on from outside to inside below described insulating ceramics
Secondary for sensitive layer A3, sensitive layer B4；In described sensitive layer A3, sensitive material is HoFeO3 nano-powder；Described sensitive layer B4 is sensitive
Material is SnO2 powder body.
Preferably, such as Fig. 3, the preparation of described CO2 gas sensor 12 comprises the following steps:
Step one, prepares insulating ceramics 1
Being chosen for the square tabular insulating ceramics that length × width × height 4 is cm × 2cm × 1cm, insulating ceramics is through acetone, second
Alcohol ultrasonic cleaning 10min, dries, and is then deposited with one layer of Cu film, as electrode, Cu film on the length direction both sides of insulating ceramics
Thickness is 800nm.
Step 2, prepares sensitive material:
Being mainly composed of perovskite type metal oxide HoFeO3 nano-powder in sensitive layer A3, its preparation process is as follows:
First weigh the Ho2O3 of 25g, and weigh appropriate Fe according to the ratio that Ho2O3:Fe (NO3) 3 mol ratio is 1:2
(NO3) 3 9H2O, according to n (Ho3++Fe3+): the mol ratio of n (citric acid)=1:3 weighs proper amount of citric acid, by Ho2O3
Being dissolved in nitric acid and form solution A, Fe (NO3) 9H2O and citric acid are dissolved in deionized water formation solution B, solution A and solution B are each
From ultrasonic 10min, then solution A and solution B are mixed, form solution C；Solution C is placed in water-bath crucible, under the conditions of 90 DEG C
Gel, until gel state, is then taken out, is placed in drying baker by heating in water bath, dries at 120 DEG C；Then xerogel is used
Mortar is fully ground, and is placed in Muffle furnace, heating and thermal insulation 2h at 350 DEG C, and then temperature is increased to 740 DEG C, and anneal 8h, natural
Cooling, rear regrinding, obtain HoFeO3 nano-powder.
Being mainly composed of SnO2 powder body in sensitive layer B4, its preparation process is as follows:
First, weighing appropriate SnCl4 5H2O, be dissolved in deionized water, preparation becomes the solution of 0.2M, is doped and added to
Molar percentage is the ZnSO4 of 7%, then according to n (Sn4+): the mol ratio of n (citric acid)=17:1 adds citric acid, ultrasonic
Process 30min, by the ammonia water titration of 0.2M, obtain Sn (OH) 4 precipitation, precipitation is filtered, after washing by the oxalic acid back dissolving of 0.5M,
Obtain Sn (OH) 4 colloidal sol, then dry and obtain SnO2 powder body after concentrating heat treatment.
Step 3, prepares anti-corrosion material
Epoxy resin is mixed in addition dispersion cup with ethyl acetate and n-butyl alcohol equal solvent by a certain percentage,
After 100rpm/min stirring lower addition zinc powder and dispersant, levelling agent, defoamer stir, add color stuffing high speed dispersion 5
～10min, it is subsequently adding nano TiO 2 and stirs, adjust viscosity with solvent, stand 5～8min, obtain the anticorrosion rich in zinc
Coating；
Step 4, prepares gas sensor
A) take HoFeO3 nano-powder that step obtains and calcium carbonate powder mixes in mortar, add a small amount of deionized water
Grinding 2h, be evenly coated in step one above insulating ceramics by ground pastel, thickness is 5 μm, forms sensitive layer A3；
B) take SnO2 powder body and calcium carbonate powder to mix in mortar, add a small amount of deionized water and grind 2h, by ground
Pastel be evenly coated in step one below insulating ceramics, thickness is 5 μm, formed sensitive layer B4；
C) take SnO2 powder body and calcium carbonate powder to mix in mortar, add a small amount of deionized water and grind 2h, by ground
Pastel be evenly coated in step one above insulating ceramics, thickness is 3 μm, formed sensitive layer B4；
D) take HoFeO3 nano-powder and calcium carbonate powder to mix in mortar, add a small amount of deionized water and grind 2h, will
Ground pastel is evenly coated in step one below insulating ceramics, and thickness is 3 μm, forms sensitive layer A3；
E () will scribble insulating ceramics 90 DEG C of dry 2h in drying baker of sensitive layer, put into by dried insulating ceramics
Batch-type furnace sinters at 590 DEG C, sensitive layer A3 and sensitive layer B4 can form loose structure, then due to the decomposition of calcium carbonate
Its natural cooling is treated in taking-up；
(f) learn from else's experience step 3 prepare anticorrosive paint, a little stirring after, be coated on the insulating ceramics processed through step e
On, put and be dried 5～10min at room temperature, be then coated with the second layer and third layer, often coat once, dry 5～10min, i.e.
Available three layers of corrosion-inhibiting coating, corrosion-inhibiting coating gross thickness is 5～10 μm；
G () encapsulates: heating unit is assembled into the hollow space of the insulating ceramics processed through step f, to insulating ceramics
Electrode and heating unit welding lead, encapsulation.
Experiment test:
(1) sensitivity, response time and stability test: gas sensor is accessed test circuit, and is placed on
In test chamber, select suitably load, cavity is sealed.First, sensor resistance value in pure air is calculated, so
After according to finite concentration, certain speed inject gas CO2 to be measured, it is ensured that invariablenes pressure of liquid in cavity, calculate in certain concentration
Resistance value in CO2 gas, draws the sensitivity of sensor；Use the method,
Above insulating ceramics, in sensitive layer A, HoFeO3 nano-powder and calcium carbonate powder mol ratio are 11:1, sensitive layer
In B, SnO2 powder body and calcium carbonate powder mol ratio are 9:1；
Below insulating ceramics, in sensitive layer B, SnO2 powder body and calcium carbonate powder mol ratio are 11:1, in sensitive layer A
HoFeO3 nano-powder and calcium carbonate powder mol ratio are 9:1, and, when insulating ceramics sintering time is 5h,
Calculate the response time of sensor, repeatability data.Test finds, under the CO2 environment of 100ppm, this
The optimum sensitivity of bright gas sensor is 6.1, and response time is 16s, repeats 200 tests, and results change is less than 5%,
And the result linearity is good, and recovery time is short, temperature resistant range width.
(2) waterproof anti-corrosion performance test
The sensor of not brushing anti-corrosion material and the sensor being painted with anti-corrosion material be respectively placed in water, 1%
HCl solution and 5% NaOH solution in, above-mentioned dip time is 2d, 7d, 15d, 20d.Test result indicate that, brushing is not anti-
The sensor of rotten material layer occurs as soon as blushing 7d when, and the brushing preserving timber bed of material just starts appearance when 20d
Slight blushing, its water resistance is significantly higher.In terms of decay resistance, also show identical phenomenon, explanation
The corrosive nature of its acid-fast alkali-proof is good.
The application safety seat can the CO2 content that exceeds standard of detection promptly and accurately, prompt passengers notes personal safety.
Embodiment three
Fig. 1 is according to the one safety seat used for vehicle shown in an exemplary embodiment, it is characterised in that including:
Seat body 11；
CO2 gas sensor 12, it is configured to when these vehicles are inoperative determine this traffic safety seat place
CO2 concentration in passenger cabin；And
Controller 13, it is configured to when these vehicles are inoperative determine described passenger cabin based on the concentration in passenger cabin
Occupied by occupant.
Preferably, described CO2 gas sensor 12 is positioned at by volume calculate lower 1/4th of described seat body 11
Position.
Preferably, such as Fig. 2, described CO2 gas sensor 12 is by insulating ceramics 1, electrode 2, sensitive layer and heating unit group
Become；Described insulating ceramics 1 is the rectangular shape of hollow along its length；Described electrode 2 is two annular copper electrodes, respectively
Be positioned at the both sides of the length direction of described insulating ceramics 1, cover the leading flank of described insulating ceramics 1, trailing flank, above and under
Face, the width of described electrode 2 is 0.5cm；Described heating unit is positioned at inside described insulating ceramics 1 hollow；Described sensitive layer divides
For sensitive layer A3 and sensitive layer B4, described sensitive layer A3 and sensitive layer B4 has the loose structure that pore creating material calcium carbonate is formed, institute
State the above of insulating ceramics and be followed successively by sensitive layer A3, sensitive layer B4 from inside to outside, depend on from outside to inside below described insulating ceramics
Secondary for sensitive layer A3, sensitive layer B4；In described sensitive layer A3, sensitive material is HoFeO3 nano-powder；Described sensitive layer B4 is sensitive
Material is SnO2 powder body.
Preferably, such as Fig. 3, the preparation of described CO2 gas sensor 12 comprises the following steps:
Step one, prepares insulating ceramics 1
Being chosen for the square tabular insulating ceramics that length × width × height 4 is cm × 2cm × 1cm, insulating ceramics is through acetone, second
Alcohol ultrasonic cleaning 10min, dries, and is then deposited with one layer of Cu film, as electrode, Cu film on the length direction both sides of insulating ceramics
Thickness is 800nm.
Step 2, prepares sensitive material:
Being mainly composed of perovskite type metal oxide HoFeO3 nano-powder in sensitive layer A3, its preparation process is as follows:
First weigh the Ho2O3 of 25g, and weigh appropriate Fe according to the ratio that Ho2O3:Fe (NO3) 3 mol ratio is 1:2
(NO3) 3 9H2O, according to n (Ho3++Fe3+): the mol ratio of n (citric acid)=1:3 weighs proper amount of citric acid, by Ho2O3
Being dissolved in nitric acid and form solution A, Fe (NO3) 9H2O and citric acid are dissolved in deionized water formation solution B, solution A and solution B are each
From ultrasonic 10min, then solution A and solution B are mixed, form solution C；Solution C is placed in water-bath crucible, under the conditions of 90 DEG C
Gel, until gel state, is then taken out, is placed in drying baker by heating in water bath, dries at 120 DEG C；Then xerogel is used
Mortar is fully ground, and is placed in Muffle furnace, heating and thermal insulation 2h at 350 DEG C, and then temperature is increased to 740 DEG C, and anneal 8h, natural
Cooling, rear regrinding, obtain HoFeO3 nano-powder.
Being mainly composed of SnO2 powder body in sensitive layer B4, its preparation process is as follows:
First, weighing appropriate SnCl4 5H2O, be dissolved in deionized water, preparation becomes the solution of 0.2M, is doped and added to
Molar percentage is the ZnSO4 of 7%, then according to n (Sn4+): the mol ratio of n (citric acid)=17:1 adds citric acid, ultrasonic
Process 30min, by the ammonia water titration of 0.2M, obtain Sn (OH) 4 precipitation, precipitation is filtered, after washing by the oxalic acid back dissolving of 0.5M,
Obtain Sn (OH) 4 colloidal sol, then dry and obtain SnO2 powder body after concentrating heat treatment.
Step 3, prepares anti-corrosion material
Epoxy resin is mixed in addition dispersion cup with ethyl acetate and n-butyl alcohol equal solvent by a certain percentage,
After 100rpm/min stirring lower addition zinc powder and dispersant, levelling agent, defoamer stir, add color stuffing high speed dispersion 5
～10min, it is subsequently adding nano TiO 2 and stirs, adjust viscosity with solvent, stand 5～8min, obtain the anticorrosion rich in zinc
Coating；
Step 4, prepares gas sensor
A) take HoFeO3 nano-powder that step obtains and calcium carbonate powder mixes in mortar, add a small amount of deionized water
Grinding 2h, be evenly coated in step one above insulating ceramics by ground pastel, thickness is 5 μm, forms sensitive layer A3；
B) take SnO2 powder body and calcium carbonate powder to mix in mortar, add a small amount of deionized water and grind 2h, by ground
Pastel be evenly coated in step one below insulating ceramics, thickness is 5 μm, formed sensitive layer B4；
C) take SnO2 powder body and calcium carbonate powder to mix in mortar, add a small amount of deionized water and grind 2h, by ground
Pastel be evenly coated in step one above insulating ceramics, thickness is 3 μm, formed sensitive layer B4；
D) take HoFeO3 nano-powder and calcium carbonate powder to mix in mortar, add a small amount of deionized water and grind 2h, will
Ground pastel is evenly coated in step one below insulating ceramics, and thickness is 3 μm, forms sensitive layer A3；
E () will scribble insulating ceramics 90 DEG C of dry 2h in drying baker of sensitive layer, put into by dried insulating ceramics
Batch-type furnace sinters at 590 DEG C, sensitive layer A3 and sensitive layer B4 can form loose structure, then due to the decomposition of calcium carbonate
Its natural cooling is treated in taking-up；
(f) learn from else's experience step 3 prepare anticorrosive paint, a little stirring after, be coated on the insulating ceramics processed through step e
On, put and be dried 5～10min at room temperature, be then coated with the second layer and third layer, often coat once, dry 5～10min, i.e.
Available three layers of corrosion-inhibiting coating, corrosion-inhibiting coating gross thickness is 5～10 μm；
G () encapsulates: heating unit is assembled into the hollow space of the insulating ceramics processed through step f, to insulating ceramics
Electrode and heating unit welding lead, encapsulation.
Experiment test:
(1) sensitivity, response time and stability test: gas sensor is accessed test circuit, and is placed on
In test chamber, select suitably load, cavity is sealed.First, sensor resistance value in pure air is calculated, so
After according to finite concentration, certain speed inject gas CO2 to be measured, it is ensured that invariablenes pressure of liquid in cavity, calculate in certain concentration
Resistance value in CO2 gas, draws the sensitivity of sensor；Use the method,
Above insulating ceramics, in sensitive layer A, HoFeO3 nano-powder and calcium carbonate powder mol ratio are 10:1, sensitive layer
In B, SnO2 powder body and calcium carbonate powder mol ratio are 9:1；
Below insulating ceramics, in sensitive layer B, SnO2 powder body and calcium carbonate powder mol ratio are 10:1, in sensitive layer A
HoFeO3 nano-powder and calcium carbonate powder mol ratio are 9:1, and, when insulating ceramics sintering time is 5h,
Calculate the response time of sensor, repeatability data.Test finds, under the CO2 environment of 100ppm, this
The optimum sensitivity of bright gas sensor is 6.1, and response time is 15s, repeats 200 tests, and results change is less than 5%,
And the result linearity is good, and recovery time is short, temperature resistant range width.
(2) waterproof anti-corrosion performance test
The sensor of not brushing anti-corrosion material and the sensor being painted with anti-corrosion material be respectively placed in water, 1%
HCl solution and 5% NaOH solution in, above-mentioned dip time is 2d, 7d, 15d, 20d.Test result indicate that, brushing is not anti-
The sensor of rotten material layer occurs as soon as blushing 7d when, and the brushing preserving timber bed of material just starts appearance when 20d
Slight blushing, its water resistance is significantly higher.In terms of decay resistance, also show identical phenomenon, explanation
The corrosive nature of its acid-fast alkali-proof is good.
The application safety seat can the CO2 content that exceeds standard of detection promptly and accurately, prompt passengers notes personal safety.
Embodiment four
Fig. 1 is according to the one safety seat used for vehicle shown in an exemplary embodiment, it is characterised in that including:
Seat body 11；
CO2 gas sensor 12, it is configured to when these vehicles are inoperative determine this traffic safety seat place
CO2 concentration in passenger cabin；And
Controller 13, it is configured to when these vehicles are inoperative determine described passenger cabin based on the concentration in passenger cabin
Occupied by occupant.
Preferably, described CO2 gas sensor 12 is positioned at by volume calculate lower 1/4th of described seat body 11
Position.
Preferably, such as Fig. 2, described CO2 gas sensor 12 is by insulating ceramics 1, electrode 2, sensitive layer and heating unit group
Become；Described insulating ceramics 1 is the rectangular shape of hollow along its length；Described electrode 2 is two annular copper electrodes, respectively
Be positioned at the both sides of the length direction of described insulating ceramics 1, cover the leading flank of described insulating ceramics 1, trailing flank, above and under
Face, the width of described electrode 2 is 0.5cm；Described heating unit is positioned at inside described insulating ceramics 1 hollow；Described sensitive layer divides
For sensitive layer A3 and sensitive layer B4, described sensitive layer A3 and sensitive layer B4 has the loose structure that pore creating material calcium carbonate is formed, institute
State the above of insulating ceramics and be followed successively by sensitive layer A3, sensitive layer B4 from inside to outside, depend on from outside to inside below described insulating ceramics
Secondary for sensitive layer A3, sensitive layer B4；In described sensitive layer A3, sensitive material is HoFeO3 nano-powder；Described sensitive layer B4 is sensitive
Material is SnO2 powder body.
Preferably, such as Fig. 3, the preparation of described CO2 gas sensor 12 comprises the following steps:
Step one, prepares insulating ceramics 1
Being chosen for the square tabular insulating ceramics that length × width × height 4 is cm × 2cm × 1cm, insulating ceramics is through acetone, second
Alcohol ultrasonic cleaning 10min, dries, and is then deposited with one layer of Cu film, as electrode, Cu film on the length direction both sides of insulating ceramics
Thickness is 800nm.
Step 2, prepares sensitive material:
Being mainly composed of perovskite type metal oxide HoFeO3 nano-powder in sensitive layer A3, its preparation process is as follows:
First weigh the Ho2O3 of 25g, and weigh appropriate Fe according to the ratio that Ho2O3:Fe (NO3) 3 mol ratio is 1:2
(NO3) 3 9H2O, according to n (Ho3++Fe3+): the mol ratio of n (citric acid)=1:3 weighs proper amount of citric acid, by Ho2O3
Being dissolved in nitric acid and form solution A, Fe (NO3) 9H2O and citric acid are dissolved in deionized water formation solution B, solution A and solution B are each
From ultrasonic 10min, then solution A and solution B are mixed, form solution C；Solution C is placed in water-bath crucible, under the conditions of 90 DEG C
Gel, until gel state, is then taken out, is placed in drying baker by heating in water bath, dries at 120 DEG C；Then xerogel is used
Mortar is fully ground, and is placed in Muffle furnace, heating and thermal insulation 2h at 350 DEG C, and then temperature is increased to 740 DEG C, and anneal 8h, natural
Cooling, rear regrinding, obtain HoFeO3 nano-powder.
Being mainly composed of SnO2 powder body in sensitive layer B4, its preparation process is as follows:
First, weighing appropriate SnCl4 5H2O, be dissolved in deionized water, preparation becomes the solution of 0.2M, is doped and added to
Molar percentage is the ZnSO4 of 7%, then according to n (Sn4+): the mol ratio of n (citric acid)=17:1 adds citric acid, ultrasonic
Process 30min, by the ammonia water titration of 0.2M, obtain Sn (OH) 4 precipitation, precipitation is filtered, after washing by the oxalic acid back dissolving of 0.5M,
Obtain Sn (OH) 4 colloidal sol, then dry and obtain SnO2 powder body after concentrating heat treatment.
Step 3, prepares anti-corrosion material
Epoxy resin is mixed in addition dispersion cup with ethyl acetate and n-butyl alcohol equal solvent by a certain percentage,
After 100rpm/min stirring lower addition zinc powder and dispersant, levelling agent, defoamer stir, add color stuffing high speed dispersion 5
～10min, it is subsequently adding nano TiO 2 and stirs, adjust viscosity with solvent, stand 5～8min, obtain the anticorrosion rich in zinc
Coating；
Step 4, prepares gas sensor
A) take HoFeO3 nano-powder that step obtains and calcium carbonate powder mixes in mortar, add a small amount of deionized water
Grinding 2h, be evenly coated in step one above insulating ceramics by ground pastel, thickness is 5 μm, forms sensitive layer A3；
B) take SnO2 powder body and calcium carbonate powder to mix in mortar, add a small amount of deionized water and grind 2h, by ground
Pastel be evenly coated in step one below insulating ceramics, thickness is 5 μm, formed sensitive layer B4；
C) take SnO2 powder body and calcium carbonate powder to mix in mortar, add a small amount of deionized water and grind 2h, by ground
Pastel be evenly coated in step one above insulating ceramics, thickness is 3 μm, formed sensitive layer B4；
D) take HoFeO3 nano-powder and calcium carbonate powder to mix in mortar, add a small amount of deionized water and grind 2h, will
Ground pastel is evenly coated in step one below insulating ceramics, and thickness is 3 μm, forms sensitive layer A3；
E () will scribble insulating ceramics 90 DEG C of dry 2h in drying baker of sensitive layer, put into by dried insulating ceramics
Batch-type furnace sinters at 590 DEG C, sensitive layer A3 and sensitive layer B4 can form loose structure, then due to the decomposition of calcium carbonate
Its natural cooling is treated in taking-up；
(f) learn from else's experience step 3 prepare anticorrosive paint, a little stirring after, be coated on the insulating ceramics processed through step e
On, put and be dried 5～10min at room temperature, be then coated with the second layer and third layer, often coat once, dry 5～10min, i.e.
Available three layers of corrosion-inhibiting coating, corrosion-inhibiting coating gross thickness is 5～10 μm；
G () encapsulates: heating unit is assembled into the hollow space of the insulating ceramics processed through step f, to insulating ceramics
Electrode and heating unit welding lead, encapsulation.
Experiment test:
(1) sensitivity, response time and stability test: gas sensor is accessed test circuit, and is placed on
In test chamber, select suitably load, cavity is sealed.First, sensor resistance value in pure air is calculated, so
After according to finite concentration, certain speed inject gas CO2 to be measured, it is ensured that invariablenes pressure of liquid in cavity, calculate in certain concentration
Resistance value in CO2 gas, draws the sensitivity of sensor；Use the method,
Above insulating ceramics, in sensitive layer A, HoFeO3 nano-powder and calcium carbonate powder mol ratio are 9:1, sensitive layer B
Middle SnO2 powder body and calcium carbonate powder mol ratio are 9:1；
Below insulating ceramics, in sensitive layer B, SnO2 powder body and calcium carbonate powder mol ratio are 9:1, HoFeO3 in sensitive layer A
Nano-powder and calcium carbonate powder mol ratio are 9:1, and, when insulating ceramics sintering time is 5h,
Calculate the response time of sensor, repeatability data.Test finds, under the CO2 environment of 100ppm, this
The optimum sensitivity of bright gas sensor is 6.1, and response time is 17s, repeats 200 tests, and results change is less than 5%,
And the result linearity is good, and recovery time is short, temperature resistant range width.
(2) waterproof anti-corrosion performance test
The sensor of not brushing anti-corrosion material and the sensor being painted with anti-corrosion material be respectively placed in water, 1%
HCl solution and 5% NaOH solution in, above-mentioned dip time is 2d, 7d, 15d, 20d.Test result indicate that, brushing is not anti-
The sensor of rotten material layer occurs as soon as blushing 7d when, and the brushing preserving timber bed of material just starts appearance when 20d
Slight blushing, its water resistance is significantly higher.In terms of decay resistance, also show identical phenomenon, explanation
The corrosive nature of its acid-fast alkali-proof is good.
The application safety seat can the CO2 content that exceeds standard of detection promptly and accurately, prompt passengers notes personal safety.
Embodiment five
Fig. 1 is according to the one safety seat used for vehicle shown in an exemplary embodiment, it is characterised in that including:
Seat body 11；
CO2 gas sensor 12, it is configured to when these vehicles are inoperative determine this traffic safety seat place
CO2 concentration in passenger cabin；And
Controller 13, it is configured to when these vehicles are inoperative determine described passenger cabin based on the concentration in passenger cabin
Occupied by occupant.
Preferably, described CO2 gas sensor 12 is positioned at by volume calculate lower 1/4th of described seat body 11
Position.
Preferably, such as Fig. 2, described CO2 gas sensor 12 is by insulating ceramics 1, electrode 2, sensitive layer and heating unit group
Become；Described insulating ceramics 1 is the rectangular shape of hollow along its length；Described electrode 2 is two annular copper electrodes, respectively
Be positioned at the both sides of the length direction of described insulating ceramics 1, cover the leading flank of described insulating ceramics 1, trailing flank, above and under
Face, the width of described electrode 2 is 0.5cm；Described heating unit is positioned at inside described insulating ceramics 1 hollow；Described sensitive layer divides
For sensitive layer A3 and sensitive layer B4, described sensitive layer A3 and sensitive layer B4 has the loose structure that pore creating material calcium carbonate is formed, institute
State the above of insulating ceramics and be followed successively by sensitive layer A3, sensitive layer B4 from inside to outside, depend on from outside to inside below described insulating ceramics
Secondary for sensitive layer A3, sensitive layer B4；In described sensitive layer A3, sensitive material is HoFeO3 nano-powder；Described sensitive layer B4 is sensitive
Material is SnO2 powder body.
Preferably, such as Fig. 3, the preparation of described CO2 gas sensor 12 comprises the following steps:
Step one, prepares insulating ceramics 1
Being chosen for the square tabular insulating ceramics that length × width × height 4 is cm × 2cm × 1cm, insulating ceramics is through acetone, second
Alcohol ultrasonic cleaning 10min, dries, and is then deposited with one layer of Cu film, as electrode, Cu film on the length direction both sides of insulating ceramics
Thickness is 800nm.
Step 2, prepares sensitive material:
Being mainly composed of perovskite type metal oxide HoFeO3 nano-powder in sensitive layer A3, its preparation process is as follows:
First weigh the Ho2O3 of 25g, and weigh appropriate Fe according to the ratio that Ho2O3:Fe (NO3) 3 mol ratio is 1:2
(NO3) 3 9H2O, according to n (Ho3++Fe3+): the mol ratio of n (citric acid)=1:3 weighs proper amount of citric acid, by Ho2O3
Being dissolved in nitric acid and form solution A, Fe (NO3) 9H2O and citric acid are dissolved in deionized water formation solution B, solution A and solution B are each
From ultrasonic 10min, then solution A and solution B are mixed, form solution C；Solution C is placed in water-bath crucible, under the conditions of 90 DEG C
Gel, until gel state, is then taken out, is placed in drying baker by heating in water bath, dries at 120 DEG C；Then xerogel is used
Mortar is fully ground, and is placed in Muffle furnace, heating and thermal insulation 2h at 350 DEG C, and then temperature is increased to 740 DEG C, and anneal 8h, natural
Cooling, rear regrinding, obtain HoFeO3 nano-powder.
Being mainly composed of SnO2 powder body in sensitive layer B4, its preparation process is as follows:
First, weighing appropriate SnCl4 5H2O, be dissolved in deionized water, preparation becomes the solution of 0.2M, is doped and added to
Molar percentage is the ZnSO4 of 7%, then according to n (Sn4+): the mol ratio of n (citric acid)=17:1 adds citric acid, ultrasonic
Process 30min, by the ammonia water titration of 0.2M, obtain Sn (OH) 4 precipitation, precipitation is filtered, after washing by the oxalic acid back dissolving of 0.5M,
Obtain Sn (OH) 4 colloidal sol, then dry and obtain SnO2 powder body after concentrating heat treatment.
Step 3, prepares anti-corrosion material
Epoxy resin is mixed in addition dispersion cup with ethyl acetate and n-butyl alcohol equal solvent by a certain percentage,
After 100rpm/min stirring lower addition zinc powder and dispersant, levelling agent, defoamer stir, add color stuffing high speed dispersion 5
～10min, it is subsequently adding nano TiO 2 and stirs, adjust viscosity with solvent, stand 5～8min, obtain the anticorrosion rich in zinc
Coating；
Step 4, prepares gas sensor
A) take HoFeO3 nano-powder that step obtains and calcium carbonate powder mixes in mortar, add a small amount of deionized water
Grinding 2h, be evenly coated in step one above insulating ceramics by ground pastel, thickness is 5 μm, forms sensitive layer A3；
B) take SnO2 powder body and calcium carbonate powder to mix in mortar, add a small amount of deionized water and grind 2h, by ground
Pastel be evenly coated in step one below insulating ceramics, thickness is 5 μm, formed sensitive layer B4；
C) take SnO2 powder body and calcium carbonate powder to mix in mortar, add a small amount of deionized water and grind 2h, by ground
Pastel be evenly coated in step one above insulating ceramics, thickness is 3 μm, formed sensitive layer B4；
D) take HoFeO3 nano-powder and calcium carbonate powder to mix in mortar, add a small amount of deionized water and grind 2h, will
Ground pastel is evenly coated in step one below insulating ceramics, and thickness is 3 μm, forms sensitive layer A3；
E () will scribble insulating ceramics 90 DEG C of dry 2h in drying baker of sensitive layer, put into by dried insulating ceramics
Batch-type furnace sinters at 590 DEG C, sensitive layer A3 and sensitive layer B4 can form loose structure, then due to the decomposition of calcium carbonate
Its natural cooling is treated in taking-up；
(f) learn from else's experience step 3 prepare anticorrosive paint, a little stirring after, be coated on the insulating ceramics processed through step e
On, put and be dried 5～10min at room temperature, be then coated with the second layer and third layer, often coat once, dry 5～10min, i.e.
Available three layers of corrosion-inhibiting coating, corrosion-inhibiting coating gross thickness is 5～10 μm；
G () encapsulates: heating unit is assembled into the hollow space of the insulating ceramics processed through step f, to insulating ceramics
Electrode and heating unit welding lead, encapsulation.
Experiment test:
(1) sensitivity, response time and stability test: gas sensor is accessed test circuit, and is placed on
In test chamber, select suitably load, cavity is sealed.First, sensor resistance value in pure air is calculated, so
After according to finite concentration, certain speed inject gas CO2 to be measured, it is ensured that invariablenes pressure of liquid in cavity, calculate in certain concentration
Resistance value in CO2 gas, draws the sensitivity of sensor；Use the method,
Above insulating ceramics, in sensitive layer A, HoFeO3 nano-powder and calcium carbonate powder mol ratio are 8:1, sensitive layer B
Middle SnO2 powder body and calcium carbonate powder mol ratio are 9:1；
Below insulating ceramics, in sensitive layer B, SnO2 powder body and calcium carbonate powder mol ratio are 8:1, HoFeO3 in sensitive layer A
Nano-powder and calcium carbonate powder mol ratio are 9:1, and, when insulating ceramics sintering time is 5h,
Calculate the response time of sensor, repeatability data.Test finds, under the CO2 environment of 100ppm, this
The optimum sensitivity of bright gas sensor is 5.2, and response time is 27s, repeats 200 tests, and results change is less than 9%,
And the result linearity is good, and recovery time is short, temperature resistant range width.
(2) waterproof anti-corrosion performance test
The sensor of not brushing anti-corrosion material and the sensor being painted with anti-corrosion material be respectively placed in water, 1%
HCl solution and 5% NaOH solution in, above-mentioned dip time is 2d, 7d, 15d, 20d.Test result indicate that, brushing is not anti-
The sensor of rotten material layer occurs as soon as blushing 7d when, and the brushing preserving timber bed of material just starts appearance when 20d
Slight blushing, its water resistance is significantly higher.In terms of decay resistance, also show identical phenomenon, explanation
The corrosive nature of its acid-fast alkali-proof is good.
The application safety seat can the CO2 content that exceeds standard of detection promptly and accurately, prompt passengers notes personal safety.
About the device in above-described embodiment, wherein modules performs the concrete mode of operation in relevant the method
Embodiment in be described in detail, explanation will be not set forth in detail herein.
Those skilled in the art, after considering description and putting into practice invention disclosed herein, will readily occur to its of the present invention
Its embodiment.The application is intended to any modification, purposes or the adaptations of the present invention, these modification, purposes or
Person's adaptations is followed the general principle of the present invention and includes the undocumented common knowledge in the art of the application
Or conventional techniques means.Description and embodiments is considered only as exemplary, and true scope and spirit of the invention are by above
Claim is pointed out.
Claims (2)
1. a safety seat used for vehicle, it is characterised in that including: seat body；
CO2 gas sensor, in it is configured to when these vehicles are inoperative determine this traffic safety seat place passenger cabin
CO2 concentration；And
Controller, it is configured to when these vehicles are inoperative determine that described passenger cabin is taken based on the concentration in passenger cabin
Person occupies.
2. safety seat as claimed in claim 1, it is characterised in that described CO2 gas sensor is positioned at described seat body
By volume calculate lower 1/4th at position.
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| CN201610545836.9A CN106042990B (en) | 2016-07-07 | 2016-07-07 | A kind of safety seat used for vehicle |
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| CN201610545836.9A CN106042990B (en) | 2016-07-07 | 2016-07-07 | A kind of safety seat used for vehicle |
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| CN106042990B CN106042990B (en) | 2018-12-04 |
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| CN201610545836.9A Active CN106042990B (en) | 2016-07-07 | 2016-07-07 | A kind of safety seat used for vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110044420A (en) * | 2019-05-08 | 2019-07-23 | 众诚恒祥(北京)科技有限公司 | A kind of greenhouse gas emissions detection device |
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| US20030169033A1 (en) * | 2002-01-02 | 2003-09-11 | Gerald Tromblee | Non-contact position sensor |
| US20040149507A1 (en) * | 2001-05-15 | 2004-08-05 | Gennady Baskin | Child seat sensor assembly |
| CN102005254A (en) * | 2010-09-15 | 2011-04-06 | 合肥左天电子科技有限公司 | Electric insulation material for lamellar detection element of gas sensor and preparation method thereof |
| CN104553999A (en) * | 2015-01-29 | 2015-04-29 | 无锡桑尼安科技有限公司 | Monitoring method for improving service state safety of vehicle stopped |
| CN105501113A (en) * | 2014-10-14 | 2016-04-20 | 德尔福技术有限公司 | An occupant safety system with CO2 detection |
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| US20040149507A1 (en) * | 2001-05-15 | 2004-08-05 | Gennady Baskin | Child seat sensor assembly |
| US20030169033A1 (en) * | 2002-01-02 | 2003-09-11 | Gerald Tromblee | Non-contact position sensor |
| CN102005254A (en) * | 2010-09-15 | 2011-04-06 | 合肥左天电子科技有限公司 | Electric insulation material for lamellar detection element of gas sensor and preparation method thereof |
| CN105501113A (en) * | 2014-10-14 | 2016-04-20 | 德尔福技术有限公司 | An occupant safety system with CO2 detection |
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| CN110044420A (en) * | 2019-05-08 | 2019-07-23 | 众诚恒祥(北京)科技有限公司 | A kind of greenhouse gas emissions detection device |
| CN110044420B (en) * | 2019-05-08 | 2020-06-26 | 众诚恒祥(北京)科技有限公司 | Greenhouse gas emission detection device |
Also Published As
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| CN106042990B (en) | 2018-12-04 |
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