CN105628740A - Online detection method for poisonous gas methyl aldehyde in import and export car foot mats - Google Patents
Online detection method for poisonous gas methyl aldehyde in import and export car foot mats Download PDFInfo
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- CN105628740A CN105628740A CN201510995399.6A CN201510995399A CN105628740A CN 105628740 A CN105628740 A CN 105628740A CN 201510995399 A CN201510995399 A CN 201510995399A CN 105628740 A CN105628740 A CN 105628740A
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- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 title claims abstract description 154
- 238000001514 detection method Methods 0.000 title claims abstract description 31
- 230000008676 import Effects 0.000 title claims abstract description 31
- 235000019256 formaldehyde Nutrition 0.000 title abstract 4
- 231100000614 poison Toxicity 0.000 title abstract 4
- 230000007096 poisonous effect Effects 0.000 title abstract 4
- 239000000463 material Substances 0.000 claims abstract description 27
- 229910052755 nonmetal Inorganic materials 0.000 claims abstract description 27
- 230000008859 change Effects 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 16
- 229910052738 indium Inorganic materials 0.000 claims abstract description 9
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000012545 processing Methods 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 7
- 239000007789 gas Substances 0.000 claims description 182
- 239000010410 layer Substances 0.000 claims description 80
- 239000002341 toxic gas Substances 0.000 claims description 48
- 239000011241 protective layer Substances 0.000 claims description 37
- 238000010998 test method Methods 0.000 claims description 16
- 239000007769 metal material Substances 0.000 claims description 12
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 9
- 238000002360 preparation method Methods 0.000 claims description 9
- 238000000197 pyrolysis Methods 0.000 claims description 8
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 5
- 238000010285 flame spraying Methods 0.000 claims description 5
- 125000002524 organometallic group Chemical group 0.000 claims description 5
- OBETXYAYXDNJHR-SSDOTTSWSA-M (2r)-2-ethylhexanoate Chemical compound CCCC[C@@H](CC)C([O-])=O OBETXYAYXDNJHR-SSDOTTSWSA-M 0.000 claims description 3
- POILWHVDKZOXJZ-ARJAWSKDSA-M (z)-4-oxopent-2-en-2-olate Chemical compound C\C([O-])=C\C(C)=O POILWHVDKZOXJZ-ARJAWSKDSA-M 0.000 claims description 3
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 3
- 239000007983 Tris buffer Substances 0.000 claims description 3
- OBETXYAYXDNJHR-UHFFFAOYSA-N alpha-ethylcaproic acid Natural products CCCCC(CC)C(O)=O OBETXYAYXDNJHR-UHFFFAOYSA-N 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 238000004090 dissolution Methods 0.000 claims description 3
- 239000012046 mixed solvent Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 7
- 230000035945 sensitivity Effects 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 4
- -1 tin metal organic compound Chemical class 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 230000000638 stimulation Effects 0.000 description 3
- 206010011224 Cough Diseases 0.000 description 2
- 230000007794 irritation Effects 0.000 description 2
- 210000004877 mucosa Anatomy 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 206010010741 Conjunctivitis Diseases 0.000 description 1
- 206010015946 Eye irritation Diseases 0.000 description 1
- 206010019233 Headaches Diseases 0.000 description 1
- 206010020751 Hypersensitivity Diseases 0.000 description 1
- 206010024642 Listless Diseases 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 206010035664 Pneumonia Diseases 0.000 description 1
- 206010037423 Pulmonary oedema Diseases 0.000 description 1
- 206010040880 Skin irritation Diseases 0.000 description 1
- 208000013738 Sleep Initiation and Maintenance disease Diseases 0.000 description 1
- 208000026935 allergic disease Diseases 0.000 description 1
- 230000007815 allergy Effects 0.000 description 1
- 230000036528 appetite Effects 0.000 description 1
- 235000019789 appetite Nutrition 0.000 description 1
- 206010006451 bronchitis Diseases 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 208000013116 chronic cough Diseases 0.000 description 1
- 230000001684 chronic effect Effects 0.000 description 1
- 231100000762 chronic effect Toxicity 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 231100000013 eye irritation Toxicity 0.000 description 1
- 210000003754 fetus Anatomy 0.000 description 1
- 231100000869 headache Toxicity 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000005802 health problem Effects 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 206010022437 insomnia Diseases 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 208000020016 psychiatric disease Diseases 0.000 description 1
- 208000005333 pulmonary edema Diseases 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 230000036556 skin irritation Effects 0.000 description 1
- 231100000475 skin irritation Toxicity 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010189 synthetic method Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
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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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- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Abstract
The invention discloses an online detection method for poisonous gas methyl aldehyde in import and export car foot mats. The online detection method comprises the steps that a gas sensitive sensor is prepared, wherein an In4Sn3O12 material is prepared from an indium and tin metal organic compound as a raw material and is applied to a base material to from a gas sensitive layer, a nonmetal protection layer is arranged on the gas sensitive layer, and the gas sensitive layer and the nonmetal protection layer are combined to be assembled to form the gas sensitive sensor; the gas sensitive senor is connected with an electrical property detection device and a data processing system to form a gas detection system; the gas sensitive layer makes contact with poisonous gas methyl aldehyde to react, the electrical property of the gas sensitive senor changes, the electrical property detection device detects electrical property change data of the gas sensitive sensor, the electrical property change data is transmitted to the data processing system, and the data processing system analyzes and processes the electrical property change data and outputs the content of poisonous gas methyl aldehyde. The method has the advantages of being high in detection sensitivity and high in detection speed.
Description
Technical field
The present invention relates to and import and export quality product detection technique field. More specifically, the present invention relates to a kind of online test method for toxic gas formaldehyde in the import and export automatic foot-mat in online transportation entry process.
Background technology
Along with the process of network commodity marketing diversification and extensiveization is accelerated gradually; the kind of import-export commodity also gets more and more; import and export frequency also more and more higher; but the rights and interests in order to Protection of consumer; the requirement of the detection of quality product is also more and more higher; not only require detection sensitivity fast, and need fast detect speed could with import and export fast sell mate mutually.
Widely using of private car, make the Diversification of products of automatic foot-mat, but the quality of some automatic foot-mat does not meet use standard, its making processes is unreasonable, sell goods exist containing toxic gas formaldehyde, make this kind of product of inferior quality flow into market to be used by human consumer, healthy hidden danger can be brought to human consumer undoubtedly. Formaldehyde is a kind of gaseous substance, and it can cause health problem to ache such as eyes or mucosa irritation. Short period of time exposes even lower concentration also can cause the stimulation of eyes and respiratory organs: stimulation eyes from 0.01ppm, stimulates eyes and nose from 0.08ppm, and from 0.5ppm stimulation throat. Serious mucosa irritation state can be caused, with shedding tears, cough and the cusalgia of nose and nose and throat more than the high density steam of 10ppm. Concentration is more than causing toxic pulmonary edema during 30ppm and jeopardize the pneumonia of life, and the chronic effect that formaldehyde causes has psychological disorders (such as insomnia, tired, listless, poor appetite or nervous), eye irritation and conjunctivitis, skin irritation, chronic cough, flu and bronchitis, headache, depression etc. In addition, formaldehyde also can cause allergy, and for some time may be caused the cancer of the mankind and gene change and damage fetus due to these reasons by suspection, it is 0.3ppm (0.375mg/m that German federal board of health proposes the maximum concentration (MAK) of working space3). Considering and be exposed to wherein for a long time, indoor standard value is even only 0.1ppm (0.125mg/m3)��
Based on these reasons above-mentioned, in the automatic foot-mat use human lives's intimate contact, toxic gas formaldehyde effectively and fast detects significant.
Summary of the invention
It is an object of the invention to solve at least one problem above-mentioned or defect, and at least one advantage that will illustrate after providing.
It is a still further object of the present invention to provide a kind of online test method importing and exporting toxic gas formaldehyde in automatic foot-mat, it is by containing In4Sn3O12The gas sensing layer of material and toxic gas formaldehyde contact reacts, detect the content of toxic gas formaldehyde by detecting the change of gas sensing layer electrical property, it is achieved that imports and exports the on-line quick detection of toxic gas formaldehyde in automatic foot-mat, detection sensitivity height.
In order to realize these objects according to the present invention and other advantage, it provides a kind of online test method importing and exporting toxic gas formaldehyde in automatic foot-mat, comprises the following steps:
The preparation of step one, gas sensor: prepare In as raw material by the organometallics of indium and tin4Sn3O12Material, to described In4Sn3O12Material is applied on base material by flame spraying pyrolysis method to be formed the gas sensing layer of gas sensor, described gas sensing layer arranges non-metallic material protective layer, described non-metallic material protective layer is positioned at the top of described gas sensing layer, the assembly that described gas sensing layer and described nonmetal protective layer be combined as gas sensor carries out assembling and is processed to form gas sensor, wherein, the multiple gas access apertures being provided with arrayed on the panel of described nonmetal protective layer, make detected gas enter described gas sensing layer by described gas access apertures;
Step 2, connect described gas sensor and electrical quality detecting device and data handling system form gas detecting system, the toxic gas formaldehyde of the top that described gas detecting system is arranged on the transport unit importing and exporting automatic foot-mat to detect in described import and export automatic foot-mat;
Wherein, the gas sensing layer of described gas sensor contacts with the toxic gas formaldehyde in described import and export automatic foot-mat and reacts, the electrical property of described gas sensor changes, described electrical quality detecting device detects the electrical property change output detections data of described gas sensor to described data handling system, and the detected result that described data handling system accepts described electrical quality detecting device carries out the content that analyzing and processing exports the toxic gas formaldehyde in described import and export automatic foot-mat.
Preferably, wherein, in described step one, In4Sn3O12The preparation of material specifically comprises: volumetric molar concentration be 0.45 Indium Tris acetylacetonate and volumetric molar concentration be 0.45 2 ethyl hexanoic acid tin equal-volume mixed dissolution in the atmosphere of oxygen, prepare In by the method for pyrolysis in the mixed solvent of toluene and dimethylbenzene4Sn3O12Material.
Preferably, wherein, in described step 2, gas suction pump also it is provided with between described transport unit and described gas detecting system, the suction pump outlet setting corresponding to multiple gas access apertures of described gas, described gas suction pump is connected the automatic control suction realizing toxic gas formaldehyde with microcontroller.
Preferably, wherein, in described step one, described gas sensing layer with described nonmetal protective layer for being flexibly connected so that the replacing of described gas sensing layer.
Preferably, wherein, in described step 2, the electrical property of the described gas sensor of described electrical quality detecting device detection is changed to resistance, output work and/or capacitance variations.
Preferably, wherein, in described step 2, the electrical property of the described gas sensor of described electrical quality detecting device detection is changed to resistance change.
Preferably, wherein, in described step one, being provided with the permanent seat for fixing described gas sensing layer in described gas sensor, described permanent seat is buckled with described gas sensing layer card and is flexibly connected.
Preferably, wherein, in described step one, the scope of the thickness ratio of described gas sensing layer and described nonmetal protective layer is: 5: (2��6).
The present invention at least comprises following useful effect:
1, by containing In4Sn3O12The gas sensing layer of material and toxic gas formaldehyde contact reacts, detect the content of toxic gas formaldehyde by detecting the change of gas sensing layer electrical property, it is achieved that imports and exports the on-line quick detection of toxic gas formaldehyde in automatic foot-mat, detection sensitivity height;
2, by arranging non-metallic material protective layer on gas sensing layer, gas sensing layer is played a protective role, avoid other gases on the impact of gas sensing layer sensitivity;
3, by being provided with gas suction pump between gas detecting system and commodity transport unit so that the formaldehyde gas in commodity is fast and gas sensing layer effect, it is to increase the detection speed of toxic gas;
4, it is flexibly connected by gas sensing layer and nonmetal protective layer, and gas sensing layer removably connects in gas sensor, it is convenient to gas sensing layer and changes, it may also be useful to be convenient.
Part is embodied by other advantage of the present invention, target and feature by explanation below, and the technician by this area by the research and practice to the present invention is also understood by part.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, to make those skilled in the art can implement according to this with reference to specification sheets word.
Embodiment 1
Import and export the process of the online test method of toxic gas formaldehyde in automatic foot-mat. Comprising:
The preparation of step one, gas sensor: prepare In as raw material by the organometallics of indium and tin4Sn3O12Material, to described In4Sn3O12Material is applied on base material by flame spraying pyrolysis method to be formed the gas sensing layer of gas sensor, described gas sensing layer arranges non-metallic material protective layer, described non-metallic material protective layer is positioned at the top of described gas sensing layer, the assembly that described gas sensing layer and described nonmetal protective layer be combined as gas sensor carries out assembling and is processed to form gas sensor, wherein, the panel of described nonmetal protective layer is provided with multiple gas access apertures of arrayed, detected gas is made to enter described gas sensing layer by described gas access apertures, wherein, described gas sensing layer with the thickness ratio of described nonmetal protective layer is: 5: 3, described gas sensing layer with described nonmetal protective layer for being flexibly connected, so that the replacing of described gas sensing layer,
Step 2, connect described gas sensor and electrical quality detecting device and data handling system form gas detecting system, the toxic gas formaldehyde of the top that described gas detecting system is arranged on the transport unit importing and exporting automatic foot-mat to detect in described import and export automatic foot-mat;
Wherein, the gas sensing layer of described gas sensor contacts with the toxic gas formaldehyde in described import and export automatic foot-mat and reacts, the electrical property of described gas sensor changes, described electrical quality detecting device detects the electrical property change output detections data of described gas sensor to described data handling system, the detected result that described data handling system accepts described electrical quality detecting device carries out the content that analyzing and processing exports the toxic gas formaldehyde in described import and export automatic foot-mat, and wherein electrical property is changed to the change of resistance value.
Embodiment 2
Import and export the process of the online test method of toxic gas formaldehyde in automatic foot-mat. Comprising:
The preparation of step one, gas sensor: prepare In as raw material by the organometallics of indium and tin4Sn3O12Material, to described In4Sn3O12Material is applied on base material by flame spraying pyrolysis method to be formed the gas sensing layer of gas sensor, described gas sensing layer arranges non-metallic material protective layer, described non-metallic material protective layer is positioned at the top of described gas sensing layer, the assembly that described gas sensing layer and described nonmetal protective layer be combined as gas sensor carries out assembling and is processed to form gas sensor, wherein, the panel of described nonmetal protective layer is provided with multiple gas access apertures of arrayed, detected gas is made to enter described gas sensing layer by described gas access apertures, wherein, described gas sensing layer with the thickness ratio of described nonmetal protective layer is: 5: 2, described gas sensing layer with described nonmetal protective layer for being flexibly connected, so that the replacing of described gas sensing layer,
Step 2, connect described gas sensor and electrical quality detecting device and data handling system form gas detecting system, the toxic gas formaldehyde of the top that described gas detecting system is arranged on the transport unit importing and exporting automatic foot-mat to detect in described import and export automatic foot-mat;
Wherein, the gas sensing layer of described gas sensor contacts with the toxic gas formaldehyde in described import and export automatic foot-mat and reacts, the electrical property of described gas sensor changes, described electrical quality detecting device detects the electrical property change output detections data of described gas sensor to described data handling system, the detected result that described data handling system accepts described electrical quality detecting device carries out the content that analyzing and processing exports the toxic gas formaldehyde in described import and export automatic foot-mat, wherein, electrical property is changed to the change of output work.
Embodiment 3
Import and export the process of the online test method of toxic gas formaldehyde in automatic foot-mat. Comprising:
The preparation of step one, gas sensor: prepare In as raw material by the organometallics of indium and tin4Sn3O12Material, to described In4Sn3O12Material is applied on base material by flame spraying pyrolysis method to be formed the gas sensing layer of gas sensor, described gas sensing layer arranges non-metallic material protective layer, described non-metallic material protective layer is positioned at the top of described gas sensing layer, the assembly that described gas sensing layer and described nonmetal protective layer be combined as gas sensor carries out assembling and is processed to form gas sensor, wherein, the panel of described nonmetal protective layer is provided with multiple gas access apertures of arrayed, detected gas is made to enter described gas sensing layer by described gas access apertures, wherein, described gas sensing layer with the thickness ratio of described nonmetal protective layer is: 5: 6, described gas sensing layer with described nonmetal protective layer for being flexibly connected, so that the replacing of described gas sensing layer,
Step 2, connect described gas sensor and electrical quality detecting device and data handling system form gas detecting system, the toxic gas formaldehyde of the top that described gas detecting system is arranged on the transport unit importing and exporting automatic foot-mat to detect in described import and export automatic foot-mat;
Wherein, the gas sensing layer of described gas sensor contacts with the toxic gas formaldehyde in described import and export automatic foot-mat and reacts, the electrical property of described gas sensor changes, described electrical quality detecting device detects the electrical property change output detections data of described gas sensor to described data handling system, the detected result that described data handling system accepts described electrical quality detecting device carries out the content that analyzing and processing exports the toxic gas formaldehyde in described import and export automatic foot-mat, wherein, electrical property is changed to the change of electric capacity.
Wherein in a kind of embodiment, in described step one, In4Sn3O12The preparation of material specifically comprises: volumetric molar concentration be 0.45 Indium Tris acetylacetonate and volumetric molar concentration be 0.45 2 ethyl hexanoic acid tin equal-volume mixed dissolution in the atmosphere of oxygen, prepare In by the method for pyrolysis in the mixed solvent of toluene and dimethylbenzene4Sn3O12Material. Further, this kind of mode is the explanation of a kind of preferred embodiments, but is not limited thereto. When implementing of the present invention, it is possible to according to preparation In4Sn3O12Material and select other raw material and synthetic method.
Wherein in a kind of embodiment, in described step 2, gas suction pump also it is provided with between described transport unit and described gas detecting system, the suction pump outlet setting corresponding to multiple gas access apertures of described gas, described gas suction pump is connected the automatic control suction realizing toxic gas formaldehyde with microcontroller. Gas suction pump is made to extract the toxic gas formaldehyde imported and exported in automatic foot-mat fast out so that it is detect with gas sensing layer contact reacts, it is to increase detection speed, and, this kind of mode is the explanation of a kind of preferred embodiments, but is not limited thereto. When implementing of the present invention, it is possible to select other enforcement mode according to the demand of user.
Wherein in a kind of embodiment, the electrical property of the described gas sensor of described electrical quality detecting device detection is changed to resistance, output work and/or capacitance variations. Further, this kind of mode is the explanation of a kind of preferred embodiments, but is not limited thereto. When implementing of the present invention, it is possible to select other electrical property change to detect according to the demand fast and easy of user, it is preferable that carry out the detection of resistance change.
Wherein in a kind of embodiment, in described step one, described gas sensor is provided with the permanent seat for fixing described gas sensing layer, described permanent seat is buckled with described gas sensing layer card and is flexibly connected, and fixing described gas sensing layer makes gas sensing layer accurately be directed to transmit and import and export automatic foot-mat and accurately detect, in addition, permanent seat is buckled with described gas sensing layer card and is flexibly connected, gas sensing layer can be dismantled in gas sensor, is convenient to gas sensing layer and changes, it may also be useful to be convenient.
Here the treatment scale illustrated is used to simplify the explanation of the present invention. Application, the modifications and variations of the online test method of toxic gas formaldehyde in the import and export automatic foot-mat of the present invention be will be readily apparent to persons skilled in the art.
As mentioned above, it is necessary, according to the present invention, by containing In4Sn3O12The gas sensing layer of material and toxic gas formaldehyde contact reacts, detect the content of toxic gas formaldehyde by detecting the change of gas sensing layer electrical property, it is achieved that imports and exports the on-line quick detection of toxic gas formaldehyde in automatic foot-mat, detection sensitivity height; By arranging non-metallic material protective layer on gas sensing layer, gas sensing layer is played a protective role, avoid other gases on the impact of gas sensing layer sensitivity; By being provided with gas suction pump between gas detecting system and commodity transport unit so that the formaldehyde gas in commodity is fast and gas sensing layer effect, it is to increase the detection speed of toxic gas; It is flexibly connected by gas sensing layer and nonmetal protective layer; and gas sensing layer removably connects in gas sensor; it is convenient to gas sensing layer change; easy to use; by the thickness ratio of control gas sensing layer and nonmetal protective layer; make nonmetal protective layer that gas sensing layer both can have been protected from the interference of other gases, again can so that detected gas quickly through nonmetal protective layer with gas sensing layer effect.
Although embodiment of the present invention are open as above, but its to be not restricted in specification sheets and enforcement mode listed uses. It can be applied to various applicable the field of the invention completely. For those skilled in the art, can easily realize other amendment. Therefore claim is not being deviated from and under general concept that equivalency range limits, the present invention is not limited to specific details and illustrates and the embodiment described here.
Claims (8)
1. import and export an online test method for toxic gas formaldehyde in automatic foot-mat, comprise the following steps:
The preparation of step one, gas sensor: prepare In as raw material by the organometallics of indium and tin4Sn3O12Material, to described In4Sn3O12Material is applied on base material by flame spraying pyrolysis method to be formed the gas sensing layer of gas sensor, described gas sensing layer arranges non-metallic material protective layer, described non-metallic material protective layer is positioned at the top of described gas sensing layer, the assembly that described gas sensing layer and described nonmetal protective layer be combined as gas sensor carries out assembling and is processed to form gas sensor, wherein, the multiple gas access apertures being provided with arrayed on the panel of described nonmetal protective layer, make detected gas enter described gas sensing layer by described gas access apertures;
Step 2, connect described gas sensor and electrical quality detecting device and data handling system form gas detecting system, the toxic gas formaldehyde of the top that described gas detecting system is arranged on the transport unit importing and exporting automatic foot-mat to detect in described import and export automatic foot-mat;
Wherein, the gas sensing layer of described gas sensor contacts with the toxic gas formaldehyde in described import and export automatic foot-mat and reacts, the electrical property of described gas sensor changes, described electrical quality detecting device detects the electrical property change output detections data of described gas sensor to described data handling system, and the detected result that described data handling system accepts described electrical quality detecting device carries out the content that analyzing and processing exports the toxic gas formaldehyde in described import and export automatic foot-mat.
2. the online test method importing and exporting toxic gas formaldehyde in automatic foot-mat as claimed in claim 1, wherein, in described step one, In4Sn3O12The preparation of material specifically comprises: volumetric molar concentration be 0.45 Indium Tris acetylacetonate and volumetric molar concentration be 0.45 2 ethyl hexanoic acid tin equal-volume mixed dissolution in the atmosphere of oxygen, prepare In by the method for pyrolysis in the mixed solvent of toluene and dimethylbenzene4Sn3O12Material.
3. the online test method importing and exporting toxic gas formaldehyde in automatic foot-mat as claimed in claim 1, wherein, in described step 2, gas suction pump also it is provided with between described transport unit and described gas detecting system, the suction pump outlet setting corresponding to multiple gas access apertures of described gas, described gas suction pump is connected the automatic control suction realizing toxic gas formaldehyde with microcontroller.
4. the as claimed in claim 1 online test method importing and exporting toxic gas formaldehyde in automatic foot-mat, wherein, in described step one, described gas sensing layer with described nonmetal protective layer for being flexibly connected so that the replacing of described gas sensing layer.
5. the online test method importing and exporting toxic gas formaldehyde in automatic foot-mat as claimed in claim 1, wherein, in described step 2, the electrical property of the described gas sensor of described electrical quality detecting device detection is changed to resistance, output work and/or capacitance variations.
6. the online test method importing and exporting toxic gas formaldehyde in automatic foot-mat as claimed in claim 5, wherein, in described step 2, the electrical property of the described gas sensor of described electrical quality detecting device detection is changed to resistance change.
7. the online test method importing and exporting toxic gas formaldehyde in automatic foot-mat as claimed in claim 1, wherein, in described step one, being provided with the permanent seat for fixing described gas sensing layer in described gas sensor, described permanent seat is buckled with described gas sensing layer card and is flexibly connected.
8. the online test method importing and exporting toxic gas formaldehyde in automatic foot-mat as claimed in claim 1, wherein, in described step one, the scope of the thickness ratio of described gas sensing layer and described nonmetal protective layer is: 5 (2��6).
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