CN201935887U - Portable indoor formaldehyde concentration monitor - Google Patents
Portable indoor formaldehyde concentration monitor Download PDFInfo
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- CN201935887U CN201935887U CN 201020668107 CN201020668107U CN201935887U CN 201935887 U CN201935887 U CN 201935887U CN 201020668107 CN201020668107 CN 201020668107 CN 201020668107 U CN201020668107 U CN 201020668107U CN 201935887 U CN201935887 U CN 201935887U
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Abstract
The utility model discloses a portable indoor formaldehyde concentration monitor, which comprises a formaldehyde sensor, a signal conditioning circuit, a processor, an LCD (liquid crystal display) touch screen, an alarming circuit and a power circuit. The signal conditioning circuit is connected with the formaldehyde sensor and conditions signals acquired by the formaldehyde sensor, the processor is connected with the signal conditioning circuit and analyzes and processes signals outputted from the signal conditioning circuit, the LCD touch screen is connected with the processor, sets system parameters and displays acquired formaldehyde concentration values, the alarming circuit alarms when formaldehyde concentration exceeds standards, the power circuit respectively supplies power for the formaldehyde sensor, the signal conditioning circuit, the processor, the LCD touch screen and the alarming circuit and is respectively connected with the formaldehyde sensor, the signal conditioning circuit, the processor, the LCD touch screen and the alarming circuit, the signal conditioning circuit comprises an amplifying circuit, a filter circuit and a zeroing circuit, and an A/D (analog/digital) converter is integrated in the processor. The portable indoor formaldehyde concentration monitor is simple in structure, reasonable in design, reliable in work, complete in function, low in cost and fine in service effect.
Description
Technical field
The utility model belongs to the gas concentration monitoring technical field, especially relates to a kind of portable indoor formaldehyde concentration monitor.
Background technology
Formaldehyde is generally believed it is indoor first killer by all circles, its release period length is generally 3-15, formaldehyde mainly contains the following aspects to health hazard: (1) spread effect: the main harm of formaldehyde shows as Mucocutaneous spread effect, formaldehyde is the protoplasmic poison material, can occur the serious stimulation of respiratory tract and oedema, eye stimulation when sucking, have a headache with protein bound, high concentration; (2) sensitization: skin directly contacts formaldehyde can cause allergic dermatitis, color spot, necrosis, can bring out bronchial astehma when sucking high-concentration formaldehyde; (3) mutagenesis: high-concentration formaldehyde still is a kind of genotoxicity material.Animal used as test can cause rhinopharyngeal neoplasm under the situation that the laboratory high concentration sucks.
The method of formaldehyde pollution measurement at present mainly contains spectrophotometric method, chromatography, fluorometry, sensor method etc.The common operation steps more complicated of spectrophotometric method, sensitivity is not high, and selectivity is lower, is subject to the interference of air background, is difficult to satisfy the requirement of environmental monitoring in many occasions; And chromatography having relatively high expectations to instrument and equipment; Fluorometry is paid attention to widely because of quick, easy, the highly sensitive people of being subjected to of its method and is used, the existing commercial prod that adopts fluorometry to make, as the AIA021 fluorescence formaldehyde analyser of Germany's production, but, still only limit to the laboratory and use because its volume is bigger.Therefore, research and develop novel concentration of formaldehyde monitor,, reduce manufacturing cost, improve human life and living environment, have great importance for improving monitoring accuracy, real-time, informationization and intelligent based on sensor method.
The utility model content
Technical problem to be solved in the utility model is at above-mentioned deficiency of the prior art, a kind of portable indoor formaldehyde concentration monitor is provided, and it is simple in structure, reasonable in design, volume is little, is easy to carry, reliable operation, complete function, cost is low and result of use good.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of portable indoor formaldehyde concentration monitor, it is characterized in that: comprise formaldehyde sensor, join and the signal collected signal conditioning circuit of nursing one's health of PARA FORMALDEHYDE PRILLS(91,95) sensor with formaldehyde sensor, the processor that joins with signal conditioning circuit and signal conditioning circuit institute output signal is analyzed and handled, join with processor and systematic parameter is provided with and shows the LCD touch-screen of the concentration of formaldehyde value that is collected and be used for the warning circuit that the PARA FORMALDEHYDE PRILLS(91,95) concentration over-standard reports to the police and be respectively formaldehyde sensor, signal conditioning circuit, processor, the power circuit of LCD touch-screen and warning circuit power supply, described power circuit respectively with formaldehyde sensor, signal conditioning circuit, processor, LCD touch-screen and warning circuit join; Described signal conditioning circuit comprises amplifying circuit, filtering circuit and the zeroing circuit of joining successively; Be integrated with A/D converter in the described processor.
Above-mentioned portable indoor formaldehyde concentration monitor is characterized in that: described formaldehyde sensor is the MQ138 semiconductor gas sensor.
Above-mentioned portable indoor formaldehyde concentration monitor is characterized in that: described processor is single-chip microcomputer MSP430F247.
Above-mentioned portable indoor formaldehyde concentration monitor is characterized in that: described LCD touch-screen is 9 cun LCD touch-screens.
Above-mentioned portable indoor formaldehyde concentration monitor is characterized in that: described warning circuit is a sound light alarming circuit.
The utility model compared with prior art has the following advantages:
1, the utility model employing single-chip microcomputer MSP430F247 is a processor, by the MQ138 formaldehyde sensor as stimulus part, cooperate signal conditioning circuit, LCD touch-screen and other peripheral circuits to constitute, not only simple in structure, processing and fabricating is convenient and use easy and simple to handle.
2, the low in energy consumption and complete function of the utility model, result of use is good, not only can the indoor concentration of formaldehyde information of precise monitoring, can the concentration of formaldehyde information that monitor be shown in real time and preserve, and can by the LCD touch-screen to alarm threshold value be provided with and the PARA FORMALDEHYDE PRILLS(91,95) concentration over-standard report to the police.
3, volume of the present utility model is little, and is in light weight, is easy to carry.
4, cost of manufacture of the present utility model is low and can carry out secondary development, and result of use is good, is convenient to promote the use of.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Description of drawings
Fig. 1 is a circuit block diagram of the present utility model.
Description of reference numerals:
The 1-formaldehyde sensor; The 2-signal conditioning circuit; The 2-1-amplifying circuit;
The 2-2-filtering circuit; The 2-3-zeroing circuit; The 3-processor;
The 4-LCD touch-screen; The 5-warning circuit; The 6-power circuit.
Embodiment
As shown in Figure 1, the utility model comprises formaldehyde sensor 1, join and the PARA FORMALDEHYDE PRILLS(91,95) sensor 1 signal collected signal conditioning circuit of nursing one's health 2 with formaldehyde sensor 1, the processor 3 that joins with signal conditioning circuit 2 and 2 output signals of signal conditioning circuit are analyzed and handled, join with processor 3 and systematic parameter is provided with and shows the LCD touch-screen 4 of the concentration of formaldehyde value that is collected and be used for the warning circuit 5 that the PARA FORMALDEHYDE PRILLS(91,95) concentration over-standard reports to the police and be respectively formaldehyde sensor 1, signal conditioning circuit 2, processor 3, the power circuit 6 of LCD touch-screen 4 and warning circuit 5 power supplies, described power circuit 6 respectively with formaldehyde sensor 1, signal conditioning circuit 2, processor 3, LCD touch-screen 4 and warning circuit 5 join; Described signal conditioning circuit 2 comprises amplifying circuit 2-1, filtering circuit 2-2 and the zeroing circuit 2-3 that joins successively; Be integrated with A/D converter in the described processor 3.
In the present embodiment, described formaldehyde sensor 1 is the MQ138 semiconductor gas sensor.Described processor 3 is single-chip microcomputer MSP430F247.Described LCD touch-screen 4 is 9 cun LCD touch-screens.Described warning circuit 5 is a sound light alarming circuit.
The course of work of the present utility model is: the utility model is placed need carry out the indoor of concentration of formaldehyde monitoring, after system opens, power circuit 1 begins power supply for each power unit, at first be provided with by 4 pairs of monitor parameters of LCD touch-screen, be provided with etc. as exceed standard threshold value setting and type of alarm of concentration of formaldehyde, concentration of formaldehyde simulating signal in 1 pair of monitoring of environmental of formaldehyde sensor is gathered, amplify by 2 pairs of described formaldehyde sensor 1 real-time concentration of formaldehyde signals of exporting of signal conditioning circuit, filtering and zeroing are handled, concentration of formaldehyde signal after being handled by 3 pairs of signal conditioning circuits of processor 2 is again gathered, A/D conversion process and concentration are calculated, synchronized transmission carries out the real-time demonstration of concentration of formaldehyde information and monitoring of environmental information to LCD touch-screen 4, if the concentration of formaldehyde that processor 3 calculates has surpassed the threshold value that exceeds standard that sets in advance, then processor 3 drives warning circuit 7 and sends sound according to the alarm threshold value and the type of alarm that pre-set, visual alarm.
The above; it only is preferred embodiment of the present utility model; be not that the utility model is imposed any restrictions; everyly any simple modification that above embodiment did, change and equivalent structure are changed, all still belong in the protection domain of technical solutions of the utility model according to the utility model technical spirit.
Claims (5)
1. portable indoor formaldehyde concentration monitor, it is characterized in that: comprise formaldehyde sensor (1), join and the signal collected signal conditioning circuit of nursing one's health of PARA FORMALDEHYDE PRILLS(91,95) sensor (1) (2) with formaldehyde sensor (1), the processor (3) that joins with signal conditioning circuit (2) and signal conditioning circuit (2) institute output signal is analyzed and handled, join with processor (3) and systematic parameter is provided with and shows the LCD touch-screen (4) of the concentration of formaldehyde value that is collected and be used for the warning circuit (5) that the PARA FORMALDEHYDE PRILLS(91,95) concentration over-standard reports to the police and be respectively formaldehyde sensor (1), signal conditioning circuit (2), processor (3), the power circuit (6) of LCD touch-screen (4) and warning circuit (5) power supply, described power circuit (6) respectively with formaldehyde sensor (1), signal conditioning circuit (2), processor (3), LCD touch-screen (4) and warning circuit (5) join; Described signal conditioning circuit (2) comprises amplifying circuit (2-1), filtering circuit (2-2) and the zeroing circuit (2-3) of joining successively; Described processor is integrated with A/D converter in (3).
2. according to the described portable indoor formaldehyde concentration monitor of claim 1, it is characterized in that: described formaldehyde sensor (1) is the MQ138 semiconductor gas sensor.
3. according to the described portable indoor formaldehyde concentration monitor of claim 1, it is characterized in that: described processor (3) is single-chip microcomputer MSP430F247.
4. according to the described portable indoor formaldehyde concentration monitor of claim 1, it is characterized in that: described LCD touch-screen (4) is 9 cun LCD touch-screens.
5. according to the described portable indoor formaldehyde concentration monitor of claim 1, it is characterized in that: described warning circuit (5) is a sound light alarming circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020668107 CN201935887U (en) | 2010-12-18 | 2010-12-18 | Portable indoor formaldehyde concentration monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020668107 CN201935887U (en) | 2010-12-18 | 2010-12-18 | Portable indoor formaldehyde concentration monitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201935887U true CN201935887U (en) | 2011-08-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020668107 Expired - Fee Related CN201935887U (en) | 2010-12-18 | 2010-12-18 | Portable indoor formaldehyde concentration monitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201935887U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384932A (en) * | 2011-11-08 | 2012-03-21 | 齐齐哈尔大学 | Formaldehyde gas sensor, making method and formaldehyde monitoring and treatment device |
| CN102937640A (en) * | 2012-11-16 | 2013-02-20 | 成都泰盟软件有限公司 | Color changing formaldehyde tester and formaldehyde concentration determination method |
| CN103257621A (en) * | 2012-12-24 | 2013-08-21 | 北京万维盈创科技发展有限公司 | Pollution source discharging working condition monitoring device |
| CN104897859A (en) * | 2015-06-23 | 2015-09-09 | 苏州市英富美欣科技有限公司 | Indoor methanol concentration detecting system with temperature compensating function |
-
2010
- 2010-12-18 CN CN 201020668107 patent/CN201935887U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384932A (en) * | 2011-11-08 | 2012-03-21 | 齐齐哈尔大学 | Formaldehyde gas sensor, making method and formaldehyde monitoring and treatment device |
| CN102384932B (en) * | 2011-11-08 | 2013-09-11 | 齐齐哈尔大学 | Formaldehyde gas sensor, making method and formaldehyde monitoring and treatment device |
| CN102937640A (en) * | 2012-11-16 | 2013-02-20 | 成都泰盟软件有限公司 | Color changing formaldehyde tester and formaldehyde concentration determination method |
| CN102937640B (en) * | 2012-11-16 | 2015-08-05 | 成都泰盟软件有限公司 | The formaldehyde tester of variable color and concentration of formaldehyde defining method |
| CN103257621A (en) * | 2012-12-24 | 2013-08-21 | 北京万维盈创科技发展有限公司 | Pollution source discharging working condition monitoring device |
| CN104897859A (en) * | 2015-06-23 | 2015-09-09 | 苏州市英富美欣科技有限公司 | Indoor methanol concentration detecting system with temperature compensating function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110817 Termination date: 20111218 |