CN202421111U - Formaldehyde gas sensing and alarming device - Google Patents
Formaldehyde gas sensing and alarming device Download PDFInfo
- Publication number
- CN202421111U CN202421111U CN2011204874891U CN201120487489U CN202421111U CN 202421111 U CN202421111 U CN 202421111U CN 2011204874891 U CN2011204874891 U CN 2011204874891U CN 201120487489 U CN201120487489 U CN 201120487489U CN 202421111 U CN202421111 U CN 202421111U
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- CN
- China
- Prior art keywords
- formaldehyde
- alarm
- formaldehyde gas
- gas sensor
- signal amplifier
- 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.)
- Expired - Fee Related
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- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 title claims abstract description 163
- 239000000463 material Substances 0.000 claims abstract description 17
- 229910021426 porous silicon Inorganic materials 0.000 claims abstract description 13
- RVCKCEDKBVEEHL-UHFFFAOYSA-N 2,3,4,5,6-pentachlorobenzyl alcohol Chemical compound OCC1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1Cl RVCKCEDKBVEEHL-UHFFFAOYSA-N 0.000 claims description 16
- NVSSKZDCIWFDJP-UHFFFAOYSA-N [Si].C=O Chemical compound [Si].C=O NVSSKZDCIWFDJP-UHFFFAOYSA-N 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000004044 response Effects 0.000 abstract description 2
- 231100000331 toxic Toxicity 0.000 abstract 1
- 230000002588 toxic effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 40
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000002341 toxic gas Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229930040373 Paraformaldehyde Natural products 0.000 description 1
- 206010070834 Sensitisation Diseases 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 210000003169 central nervous system Anatomy 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 210000002249 digestive system Anatomy 0.000 description 1
- 238000002795 fluorescence method Methods 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 210000004400 mucous membrane Anatomy 0.000 description 1
- 229920002866 paraformaldehyde Polymers 0.000 description 1
- 238000003969 polarography Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000008313 sensitization Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
Images
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The utility model provides a formaldehyde gas sensing and alarming device which comprises a PCBA (printed circuit board assembly) panel, a formaldehyde-gas sensitive sensor, a signal amplifier and an alarm. The formaldehyde-gas sensitive sensor, the signal amplifier and the alarm are fixed on the PCBA panel; the formaldehyde-gas sensitive sensor is connected with the PCBA panel through a pin below the formaldehyde-gas sensitive sensor; the PCBA panel is connected with the alarm through a lead; the formaldehyde-gas sensitive sensor is connected with the alarm through the signal amplifier; and the sensitive material in the formaldehyde-gas sensitive sensor is usually the porous silicon formaldehyde-gas sensitive material. The formaldehyde-gas sensitive element made of the porous silicon formaldehyde-gas sensitive material is highly selective and sensitive to the formaldehyde and has short response time and good stability. The formaldehyde gas sensing and alarming device is simple in structure, ensures the rapid diction and has low manufacturing cost and a sensitive toxic formaldehyde gas detection effect.
Description
Technical field
The utility model relates to a kind of formaldehyde gas sensor alarm.
Background technology
At present, porous silicon is obtaining increasing concern as a kind of potential gas sensitization property material.Undertaken for the preparation method of porous silicon with to its research of carrying out various finishinges by the lot of domestic and international researcher.Porous silicon surface is carried out different modifications; Can obtain the functional material responsive to gas with various; Again because this material has big specific surface area and compatible mutually with silica-based IC technology easily; Integrated and constitute advantages such as sensing chip or detector with other signal processing circuits, make that the research to porous silicon has important and actual value.
Formaldehyde is colourless gas, extensively is present in the decorating house, and it has special odor; Ability intense stimulus mucous membrane as long as there is the formaldehyde of trace to exist in the air, will produce stimulation to people's eye, nose; Live in for a long time under this environment, can be to respiratory system, the digestive system of human body, even central nervous system produces harmful effect; And be considered to possible carcinogenic material, so airborne concentration of formaldehyde monitoring the many concerns of People more and more have been caused.At present the assay method of formaldehyde mainly contains spectrophotometer method, chromatography, fluorescence method, polarography etc., and these method analytic process complicacies or analytical instrument are expensive and can not popularize use.
The utility model content
The purpose of the utility model is to provide a kind of formaldehyde gas sensor alarm, and is easy to operate to realize, can detect formaldehyde gas soon, delicately.
A kind of formaldehyde gas sensor alarm; Comprise PCBA plate, formaldehyde gas sensor, signal amplifier and alarm; Formaldehyde gas sensor, signal amplifier and alarm are fixed on the PCBA plate, and the formaldehyde gas sensor links to each other with the PCBA plate through the stitch under it, and the PCBA plate is connected through lead with alarm; And the formaldehyde gas sensor is connected with alarm through signal amplifier, and the sensitive material in the said formaldehyde gas sensor is the porous silicon formaldehyde gas sensitive material.
Be packaged with sensitive material in the connector in the said formaldehyde gas sensor, and the connector surface is provided with explosion-proof net.
Said explosion-proof net is to be processed by the double-layer stainless steel silk screen.
The junction of said PCBA plate and formaldehyde gas sensor, signal amplifier and alarm seals with marine glue.
Said signal amplifier and alarm are conventional commercial elements.
The porous silicon formaldehyde gas sensitive material obtains through the following step: cleaning silicon chip after 1. silicon chip surface is aluminized; 2. silicon chip surface forms porous structure with galvanic corrosion; 3. preparation contains the mixed solution of trace meter kind; 4. silicon chip is placed solution, at porous silicon surface plated metal ion, form metallic film at porous silicon surface with electroless deposition processes.
Formaldehyde gas sensor in the utility model is the resistor-type gas sensor; The formaldehyde gas sensor converts gas concentration signal to analog electrical signal; Amplifying circuit by signal amplifier becomes this electrical signal conversion with the voltage signal of gas concentration proportion relation to export to alarm again; Alarm rang when the voltage of setting through warning horn was some values, reached the alarm effect to toxic gas formaldehyde.
The advantage of the utility model: the formaldehyde gas sensor that the porous silicon gas sensitive is processed, PARA FORMALDEHYDE PRILLS(91,95) not only show good selectivity and high sensitivity, and response time and stability are all better.This apparatus structure is simple, cost of manufacture is low, detection is rapid; Detection effect to toxic gas formaldehyde is sensitive.
Description of drawings
Fig. 1 is the structural representation of the utility model formaldehyde gas sensor alarm;
Fig. 2 is the structural representation of formaldehyde gas sensor in the utility model formaldehyde gas sensor alarm;
Among the figure, 1:PCBA plate, 2: formaldehyde gas sensor, 3: signal amplifier, 4: alarm, 5: connector, 6: explosion-proof net, 7: stitch.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Embodiment 1
Like Fig. 1 and Fig. 2; The formaldehyde gas sensor alarm; Comprise PCBA plate 1, formaldehyde gas sensor 2, signal amplifier 3 and alarm 4; Described formaldehyde gas sensor 2, signal amplifier 3 and alarm 4 are fixed on the PCBA plate 1, and formaldehyde gas sensor 2 links to each other with PCBA plate 1 through the stitch 7 under it, and PCBA plate 1 and alarm 4 are connected through lead; And formaldehyde gas sensor 2 is connected with alarm 4 through signal amplifier 3, and the sensitive material in the said formaldehyde gas sensor 2 is the porous silicon formaldehyde gas sensitive material; Be packaged with sensitive material in the connector 5 in the formaldehyde gas sensor 2, and connector 5 surfaces are provided with explosion-proof net 6; Explosion-proof net 6 is to be processed by the double-layer stainless steel silk screen; PCBA plate 1 seals with marine glue with the junction of formaldehyde gas sensor 2, signal amplifier 3 and alarm 4; Signal amplifier 3 is conventional commercial elements with alarm 4.
During use; The formaldehyde gas sensor converts gas concentration signal to analog electrical signal; Amplifying circuit by signal amplifier becomes this electrical signal conversion with the voltage signal of gas concentration proportion relation to export to alarm again; Alarm rang when the voltage of setting through warning horn was some values, reached the alarm effect to toxic gas formaldehyde.
Detected voltage and concentration of formaldehyde have relation one to one, the corresponding magnitude of voltage of concentration of formaldehyde.(concentration of formaldehyde is 500ppm) output alarm enabling signal when alarm voltage being set being 4.23V, alarm sends warning.
Claims (4)
1. formaldehyde gas sensor alarm; Comprise PCBA plate, formaldehyde gas sensor, signal amplifier and alarm; Formaldehyde gas sensor, signal amplifier and alarm are fixed on the PCBA plate, and the formaldehyde gas sensor links to each other with the PCBA plate through the stitch under it, and the PCBA plate is connected through lead with alarm; And the formaldehyde gas sensor is connected with alarm through signal amplifier, and it is characterized in that: the sensitive material in the said formaldehyde gas sensor is the porous silicon formaldehyde gas sensitive material.
2. formaldehyde gas sensor alarm according to claim 1 is characterized in that: be packaged with sensitive material in the connector in the said formaldehyde gas sensor, and the connector surface is provided with explosion-proof net.
3. formaldehyde gas sensor alarm according to claim 2 is characterized in that: said explosion-proof net is to be processed by the double-layer stainless steel silk screen.
4. according to claim 1,2 or 3 described formaldehyde gas sensor alarms, it is characterized in that: the junction of said PCBA plate and formaldehyde gas sensor, signal amplifier and alarm seals with marine glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204874891U CN202421111U (en) | 2011-11-30 | 2011-11-30 | Formaldehyde gas sensing and alarming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204874891U CN202421111U (en) | 2011-11-30 | 2011-11-30 | Formaldehyde gas sensing and alarming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202421111U true CN202421111U (en) | 2012-09-05 |
Family
ID=46745864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204874891U Expired - Fee Related CN202421111U (en) | 2011-11-30 | 2011-11-30 | Formaldehyde gas sensing and alarming device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202421111U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103969294A (en) * | 2013-01-25 | 2014-08-06 | 泰科电子(上海)有限公司 | Silicon oil detector, electric terminal assembly and silicon oil detector use method |
| CN104897732A (en) * | 2014-03-03 | 2015-09-09 | 中国科学院大连化学物理研究所 | Formaldehyde gas sensor gas-sensitive membrane preparation method |
| EP3276345A1 (en) * | 2016-07-25 | 2018-01-31 | Samsung Electronics Co., Ltd. | Formaldehyde detecting apparatus, and air treatment apparatus having the same |
| WO2018115531A1 (en) * | 2016-12-23 | 2018-06-28 | Koninklijke Philips N.V. | A system and method for measuring a concentration of a pollutant within a gas |
| CN108318541A (en) * | 2017-01-16 | 2018-07-24 | 华邦电子股份有限公司 | Gas measuring device |
-
2011
- 2011-11-30 CN CN2011204874891U patent/CN202421111U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103969294A (en) * | 2013-01-25 | 2014-08-06 | 泰科电子(上海)有限公司 | Silicon oil detector, electric terminal assembly and silicon oil detector use method |
| CN103969294B (en) * | 2013-01-25 | 2016-06-01 | 泰科电子(上海)有限公司 | The using method of silicone oil detector, electric power terminal assembly and silicone oil detector |
| CN104897732A (en) * | 2014-03-03 | 2015-09-09 | 中国科学院大连化学物理研究所 | Formaldehyde gas sensor gas-sensitive membrane preparation method |
| CN104897732B (en) * | 2014-03-03 | 2017-12-26 | 中国科学院大连化学物理研究所 | A kind of preparation method of formaldehyde gas sensor air-sensitive film |
| EP3276345A1 (en) * | 2016-07-25 | 2018-01-31 | Samsung Electronics Co., Ltd. | Formaldehyde detecting apparatus, and air treatment apparatus having the same |
| KR20180011597A (en) * | 2016-07-25 | 2018-02-02 | 삼성전자주식회사 | Formaldehyde detecting device, and air handling apparatus having the same |
| US10761047B2 (en) | 2016-07-25 | 2020-09-01 | Samsung Electronics Co., Ltd. | Formaldehyde detecting apparatus, and air treatment apparatus having the same |
| KR102650884B1 (en) * | 2016-07-25 | 2024-03-26 | 삼성전자주식회사 | Formaldehyde detecting device, and air handling apparatus having the same |
| WO2018115531A1 (en) * | 2016-12-23 | 2018-06-28 | Koninklijke Philips N.V. | A system and method for measuring a concentration of a pollutant within a gas |
| US11280705B2 (en) | 2016-12-23 | 2022-03-22 | Koninklijke Philips N.V. | System and method for measuring a concentration of a pollutant within a gas |
| CN108318541A (en) * | 2017-01-16 | 2018-07-24 | 华邦电子股份有限公司 | Gas measuring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20141130 |
|
| EXPY | Termination of patent right or utility model |