CN103698474A - Comprehensive test instrument of indoor air quality - Google Patents
Comprehensive test instrument of indoor air quality Download PDFInfo
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- CN103698474A CN103698474A CN201310659551.4A CN201310659551A CN103698474A CN 103698474 A CN103698474 A CN 103698474A CN 201310659551 A CN201310659551 A CN 201310659551A CN 103698474 A CN103698474 A CN 103698474A
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Abstract
The invention discloses a comprehensive test instrument of indoor air quality. The comprehensive test instrument comprises a singlechip (1), a power supply module (2), a gas sensing module (3), a temperature and humidity sensing module (4), an alarm module (5), a transceiving module (6), a display module (7) and an operation key module (8), wherein the power supply module (2), the gas sensing module (3), the temperature and humidity sensing module (4), the alarm module (5) and the transceiving module (6) are electrically connected with the singlechip (1), respectively, and the circuit of the gas sensing module (3) comprises a sensing circuit and a filter circuit. The comprehensive test instrument disclosed by the invention is convenient to operate and is low in manufacturing cost, so that the comprehensive test instrument is suitable for monitoring daily indoor air quality of households and can be operated by laypeople.
Description
Technical field
The present invention relates to a kind of watch-dog, especially a kind of IAQ (indoor air quality) comprehensive tester.
Background technology
In recent years, with gas sensor, detect formaldehyde, become the development trend of Formaldehyde.The formaldehyde sensor of piezoelectric type began one's study out in 1983.This sensor can detect the concentration of formaldehyde in real time, and still, in the situation that having hydrone, crystal will be easy to drift about when vibrations.So do not possess practicality.In order to reach the requirement of real-time measurement concentration of formaldehyde, at present, scientific research personnel has worked out the very fast instrument of measuring of a lot of formaldehyde.This quasi-instrument can be measured concentration of formaldehyde in real time, easy to operate, is applicable to, in indoor and commercial production, measure in real time the concentration of formaldehyde; Also can measure wooden middle discharged formaldehyde amount.
But aspect the harmful gas researchs such as test formaldehyde, benzene, only has at present professional monitoring instrument, these instruments can detect harmful gas in real time, at aspect professional testing agency and experimental study mechanism aspect, obtained certain being suitable for, but need professional work people just can detect, and instrument cost is all high, is not suitable for the daily monitoring of family and uses.
In sum, also do not have at present a kind of layman of being suitable for to use, can be used for family's monitoring, and easy to operate, economic and practical indoor air quality monitoring instrument.
Summary of the invention
High for solving current air quality monitor device operation requirements, price is high, is not easy to family's technical matters used in everyday, the invention provides a kind of IAQ (indoor air quality) comprehensive tester.
The technical solution used in the present invention is as follows:
IAQ (indoor air quality) comprehensive tester, comprises single-chip microcomputer, power module, gas sensing module, temperature and humidity sensing module, alarm module, transceiver module, display module and operation push-button module; Described power module, described gas sensing module, described temperature and humidity sensing module, described alarm module and described transceiver module are electrically connected to described single-chip microcomputer respectively; Wherein, described gas sensing modular circuit comprises sensing circuit and filtering circuit.
In above-mentioned IAQ (indoor air quality) comprehensive tester, described sensing circuit is comprised of sensing element, resistance R 1 and resistance R 2, and described sensing element comprises input end 1,2 and 3, output terminal 4,5 and 6; The described input end 1,2 and 3 of described sensing element connects power supply positive input terminal, and described output terminal 5 is electrically connected to described resistance R 1, ground connection then, and then is connected with described resistance R 2, finally formation sensing circuit output terminal in parallel with described output terminal 4 and 6; Described filtering circuit is comprised of two voltage comparator U1, diode D1, slide rheostat RP, resistance R 3, capacitor C 1 and socket CON4; Described pair of voltage comparator U1 positive input 3 is connected with described slide rheostat RP sliding end, described slide rheostat RP stiff end one termination power positive input terminal, other end ground connection; Described pair of voltage comparator U1 earth terminal 4 ground connection, power end 8 is connected with power supply positive input terminal; Described resistance R 3 one termination power positive input terminals, the other end is connected with diode D1 is anodal, is then connected respectively described capacitor C 1 other end ground connection with described pair of voltage comparator U1 output terminal 1, described capacitor C 1 and described socket CON4 level signal output terminal; Described pair of voltage comparator U1 reverse input end 2 is connected with described sensing circuit output terminal, is connected with described socket CON4 analog signal output simultaneously.
In above-mentioned IAQ (indoor air quality) comprehensive tester, between described single-chip microcomputer and described power module, be also electrically connected with rectifying and voltage-stabilizing module.
In above-mentioned IAQ (indoor air quality) comprehensive tester, described rectifying and voltage-stabilizing module is electrically connected to through voltage changing module with described transceiver module.
In above-mentioned IAQ (indoor air quality) comprehensive tester, between described gas sensing module and described single-chip microcomputer, be also electrically connected with D/A converter module.
In above-mentioned IAQ (indoor air quality) comprehensive tester, described rectifying and voltage-stabilizing module voltage of voltage regulation is 5V, and described voltage changing module is 3V by 5V voltage transition.
In above-mentioned IAQ (indoor air quality) comprehensive tester, described transceiver module is wireless receiving and dispatching.
Technique scheme of the present invention has the following advantages compared to existing technology:
1. IAQ (indoor air quality) comprehensive tester provided by the invention, owing to adopting single-chip microcomputer to control indoor air quality monitoring, can Real-Time Monitoring, simple to operate, and use cost is low.
2. IAQ (indoor air quality) comprehensive tester provided by the invention, owing to adopting gas sensing module and temperature and humidity sensing module to monitor IAQ (indoor air quality), more comprehensively, monitoring effect is better for index.
3. IAQ (indoor air quality) comprehensive tester provided by the invention, owing to adopting radio receiving transmitting module, therefore, the present invention can carry out remote monitoring.
Accompanying drawing explanation
For content of the present invention is more likely to be clearly understood, below according to a particular embodiment of the invention and by reference to the accompanying drawings, the present invention is further detailed explanation, wherein
Fig. 1 is the structural representation of IAQ (indoor air quality) comprehensive tester of the present invention;
Fig. 2 is gas sensing module circuit diagram in IAQ (indoor air quality) comprehensive tester of the present invention.
In figure, be labeled as: 1-single-chip microcomputer, 2-power module, 3-gas sensing module, 4-temperature and humidity sensing module, 5-alarm module, 6-transceiver module, 7-display module, 8-operation push-button module, 9-rectifying and voltage-stabilizing module, 10-voltage changing module, 11-D/A converter module, 12-sensing element.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
As depicted in figs. 1 and 2, be the preferred embodiment of IAQ (indoor air quality) comprehensive tester of the present invention.
Described IAQ (indoor air quality) comprehensive tester, comprises single-chip microcomputer 1, power module 2, gas sensing module 3, temperature and humidity sensing module 4, alarm module 5, transceiver module 6, display module 7 and operation push-button module 8; Described power module 2, described gas sensing module 3, described temperature and humidity sensing module 4, described alarm module 5 and described transceiver module 6 are electrically connected to described single-chip microcomputer 1 respectively; Wherein, described gas sensing module 3 circuit comprise sensing circuit and filtering circuit.
In the present embodiment, described sensing circuit is comprised of sensing element 12, resistance R 1 and resistance R 2, and described sensing element 12 comprises input end 1,2 and 3, output terminal 4,5 and 6; The described input end 1,2 and 3 of described sensing element 12 connects power supply positive input terminal, and described output terminal 5 is electrically connected to described resistance R 1, ground connection then, and then is connected with described resistance R 2, finally formation sensing circuit output terminal in parallel with described output terminal 4 and 6; Described filtering circuit is comprised of two voltage comparator U1, diode D1, slide rheostat RP, resistance R 3, capacitor C 1 and socket CON4; Described pair of voltage comparator U1 positive input 3 is connected with described slide rheostat RP sliding end, described slide rheostat RP stiff end one termination power positive input terminal, other end ground connection; Described pair of voltage comparator U1 earth terminal 4 ground connection, power end 8 is connected with power supply positive input terminal; Described resistance R 3 one termination power positive input terminals, the other end is connected with diode D1 is anodal, is then connected respectively described capacitor C 1 other end ground connection with described pair of voltage comparator U1 output terminal 1, described capacitor C 1 and described socket CON4 level signal output terminal; Described pair of voltage comparator U1 reverse input end 2 is connected with described sensing circuit output terminal, is connected with described socket CON4 analog signal output simultaneously.
In the present embodiment, between described single-chip microcomputer 1 and described power module 2, be also electrically connected with rectifying and voltage-stabilizing module 9.
In the present embodiment, described rectifying and voltage-stabilizing module 9 is electrically connected to through voltage changing module 10 with described transceiver module 6.
In the present embodiment, between described gas sensing module 3 and described single-chip microcomputer 1, be also electrically connected with D/A converter module 11.
Obviously, above-described embodiment is only for example is clearly described, and the not restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all embodiments.And the apparent variation of being extended out thus or change are still among protection scope of the present invention.
Claims (5)
1. IAQ (indoor air quality) comprehensive tester, is characterized in that: comprise single-chip microcomputer (1), power module (2), gas sensing module (3), temperature and humidity sensing module (4), alarm module (5), transceiver module (6), display module (7) and operation push-button module (8);
Described power module (2), described gas sensing module (3), described temperature and humidity sensing module (4), described alarm module (5) and described transceiver module (6) are electrically connected to described single-chip microcomputer (1) respectively;
Wherein, described gas sensing module (3) circuit comprises sensing circuit and filtering circuit.
2. IAQ (indoor air quality) comprehensive tester according to claim 1, is characterized in that: described sensing circuit is comprised of sensing element (12), resistance R 1 and resistance R 2, and described sensing element (12) comprises input end 1,2 and 3, output terminal 4,5 and 6;
The described input end 1,2 and 3 of described sensing element (12) connects power supply positive input terminal, and described output terminal 5 is electrically connected to described resistance R 1, ground connection then, and then is connected with described resistance R 2, finally formation sensing circuit output terminal in parallel with described output terminal 4 and 6;
Described filtering circuit is comprised of two voltage comparator U1, diode D1, slide rheostat RP, resistance R 3, capacitor C 1 and socket CON4;
Described pair of voltage comparator U1 positive input 3 is connected with described slide rheostat RP sliding end, described slide rheostat RP stiff end one termination power positive input terminal, other end ground connection;
Described pair of voltage comparator U1 earth terminal 4 ground connection, power end 8 is connected with power supply positive input terminal;
Described resistance R 3 one termination power positive input terminals, the other end is connected with diode D1 is anodal, is then connected respectively described capacitor C 1 other end ground connection with described pair of voltage comparator U1 output terminal 1, described capacitor C 1 and described socket CON4 level signal output terminal;
Described pair of voltage comparator U1 reverse input end 2 is connected with described sensing circuit output terminal, is connected with described socket CON4 analog signal output simultaneously.
3. IAQ (indoor air quality) comprehensive tester according to claim 2, is characterized in that: between described single-chip microcomputer (1) and described power module (2), be also electrically connected with rectifying and voltage-stabilizing module (9).
4. IAQ (indoor air quality) comprehensive tester according to claim 3, is characterized in that: described rectifying and voltage-stabilizing module (9) is electrically connected to through voltage changing module (10) with described transceiver module (6).
5. IAQ (indoor air quality) comprehensive tester according to claim 4, is characterized in that: between described gas sensing module (3) and described single-chip microcomputer (1), be also electrically connected with D/A converter module (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310659551.4A CN103698474A (en) | 2013-12-09 | 2013-12-09 | Comprehensive test instrument of indoor air quality |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310659551.4A CN103698474A (en) | 2013-12-09 | 2013-12-09 | Comprehensive test instrument of indoor air quality |
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Citations (7)
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| US20090188297A1 (en) * | 2008-01-25 | 2009-07-30 | Martin Willett | Temperature and Humidity Compensated Single Element Pellistor |
| CN202421159U (en) * | 2011-11-21 | 2012-09-05 | 贺文锋 | Multifunctional household air monitoring instrument |
| CN102881118A (en) * | 2010-09-03 | 2013-01-16 | 中国石油化工股份有限公司 | Portable toxic gas monitoring device and method |
| CN202720217U (en) * | 2012-05-31 | 2013-02-06 | 武汉理工大学 | Detector for quality of air in automobile |
| CN202870062U (en) * | 2012-11-01 | 2013-04-10 | 佛山市智恒环保科技有限公司 | Indoor air quality detector |
| CN103105469A (en) * | 2013-02-05 | 2013-05-15 | 贝谷科技股份有限公司 | Online monitoring device for automobile interior air quality monitoring |
| CN203232106U (en) * | 2013-01-29 | 2013-10-09 | 温州电力局 | Multiple failure diagnostic device for high-voltage switch cabinet |
-
2013
- 2013-12-09 CN CN201310659551.4A patent/CN103698474A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090188297A1 (en) * | 2008-01-25 | 2009-07-30 | Martin Willett | Temperature and Humidity Compensated Single Element Pellistor |
| CN102881118A (en) * | 2010-09-03 | 2013-01-16 | 中国石油化工股份有限公司 | Portable toxic gas monitoring device and method |
| CN202421159U (en) * | 2011-11-21 | 2012-09-05 | 贺文锋 | Multifunctional household air monitoring instrument |
| CN202720217U (en) * | 2012-05-31 | 2013-02-06 | 武汉理工大学 | Detector for quality of air in automobile |
| CN202870062U (en) * | 2012-11-01 | 2013-04-10 | 佛山市智恒环保科技有限公司 | Indoor air quality detector |
| CN203232106U (en) * | 2013-01-29 | 2013-10-09 | 温州电力局 | Multiple failure diagnostic device for high-voltage switch cabinet |
| CN103105469A (en) * | 2013-02-05 | 2013-05-15 | 贝谷科技股份有限公司 | Online monitoring device for automobile interior air quality monitoring |
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Application publication date: 20140402 |