CN201732073U - Formaldehyde concentration monitor - Google Patents
Formaldehyde concentration monitor Download PDFInfo
- Publication number
- CN201732073U CN201732073U CN2010202751093U CN201020275109U CN201732073U CN 201732073 U CN201732073 U CN 201732073U CN 2010202751093 U CN2010202751093 U CN 2010202751093U CN 201020275109 U CN201020275109 U CN 201020275109U CN 201732073 U CN201732073 U CN 201732073U
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- concentration
- formaldehyde
- monitor
- signal conditioning
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Abstract
The utility model discloses a formaldehyde concentration monitor. The monitor comprises a microprocessor circuit and a power circuit; the input terminal of the microprocessor circuit is connected with a keyboard input circuit for setting parameters of the monitor, and a signal conditioning circuit; the input terminal of the signal conditioning circuit is connected with a formaldehyde sensor; the signal conditioning circuit amplifies, filters and zeros signals sampled by the formaldehyde sensor, and then outputs the signals to the microprocessor circuit; the microprocessor circuit converts A/D and calculates the concentration of the signals processed by the signal conditioning circuit, and outputs the signals to a LCD display circuit connected with the output terminal of the microprocessor circuit and used for displaying the monitoring information in real time, an acoustic-optic alarming device alarming when the formaldehyde concentration exceeds the standard, and a communication circuit; and the communication circuit receives the signals processed by the microprocessor circuit and transmits the signals to an upper computer connected with the output terminal of the communication circuit and used for storing the monitoring information in real time. The monitor has the advantages of simple structure, reasonable design, reliable operation, low cost, and convenient popularization and application.
Description
Technical field
The utility model belongs to the gas concentration monitoring technical field, especially relates to a kind of concentration of formaldehyde monitor.
Background technology
Formaldehyde is generally believed it is indoor first killer by all circles, and its release period length is generally 3-15, and it is very serious to human body especially infant, pregnant women, old man and chronic.And in recent years, along with the needs of the growth and the trip of city vehicle, the time that people spend in car is also more and more, and formaldehyde pollutes in the car has also become another key factor that health is exerted an influence after second wife's internal contamination.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, and a kind of concentration of formaldehyde monitor based on intelligent formaldehyde sensor is provided, and it is simple in structure, reasonable in design, reliable operation, 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 concentration of formaldehyde monitor, it is characterized in that: comprise microcontroller circuit and give the power circuit of each power unit power supply, the input termination of described microcontroller circuit is carried out keyboard input circuit and the signal conditioning circuit that parameter is provided with to monitor, the formaldehyde sensor that the input termination PARA FORMALDEHYDE PRILLS(91,95) concentration of analog signal of described signal conditioning circuit is gathered in real time, the described signal conditioning circuit PARA FORMALDEHYDE PRILLS(91,95) sensor concentration of formaldehyde simulating signal of sampling is amplified, after handling, filtering and zeroing export to microcontroller circuit, signal after microcontroller circuit is handled signal conditioning circuit carries out A/D conversion process and concentration calculating and exports to being connected on the liquid crystal display circuit that microcontroller circuit output terminal and PARA FORMALDEHYDE PRILLS(91,95) concentration information and monitoring of environmental information show in real time, the PARA FORMALDEHYDE PRILLS(91,95) concentration over-standard carries out the sound light alarming circuit and the telecommunication circuit of sound and light alarm, and telecommunication circuit receives the concentration of formaldehyde information after microcontroller circuit is handled and is transferred to and is connected on the host computer that telecommunication circuit output terminal and PARA FORMALDEHYDE PRILLS(91,95) concentration information and monitoring of environmental information are preserved in real time.
Described formaldehyde sensor is the MQ138 semiconductor gas sensor.
Described microcontroller circuit is the inner dsp chip that is integrated with the A/D converting unit.
The dsp chip that described inside is integrated with the A/D converting unit is chip TMS320LF2407A.
Described liquid crystal display circuit is the liquid crystal display circuit based on the SED1335 liquid-crystal controller.
Described sound light alarming circuit is for the PARA FORMALDEHYDE PRILLS(91,95) concentration over-standard slightly exceeds standard, moderate exceeds standard and the sound light alarming circuit of three grades of warnings of severe overweight.
The utility model compared with prior art has the following advantages:
1, the utility model employing dsp chip TMS320LF2407A is a master controller, as stimulus part, cooperates peripheral circuit to constitute by the MQ138 formaldehyde sensor, and 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 precise monitoring indoor, the Che Nei or the concentration of formaldehyde information of other occasions, can show in real time and preserve the concentration of formaldehyde information that monitors and monitoring of environmental information, and can the PARA FORMALDEHYDE PRILLS(91,95) concentration over-standard slightly exceed standard, moderate exceeds standard and three grades of warnings of severe overweight.
3, cost is low and can carry out secondary development, 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 structured flowchart of the present utility model.
Description of reference numerals:
The 1-power circuit; The 2-formaldehyde sensor; The 3-signal conditioning circuit;
The 4-microcontroller circuit; 5-keyboard input circuit; The 6-liquid crystal display circuit;
The 7-sound light alarming circuit; The 8-telecommunication circuit; The 9-host computer.
Embodiment
As shown in Figure 1, the utility model comprises microcontroller circuit 4 and gives the power circuit 1 of each power unit power supply, the input termination of described microcontroller circuit 4 is carried out keyboard input circuit 5 and the signal conditioning circuit 3 that parameter is provided with to monitor, the formaldehyde sensor 2 that the input termination PARA FORMALDEHYDE PRILLS(91,95) concentration of analog signal of described signal conditioning circuit 3 is gathered in real time, the described signal conditioning circuit 3 PARA FORMALDEHYDE PRILLS(91,95) sensor 2 concentration of formaldehyde simulating signals of sampling are amplified, after handling, filtering and zeroing export to microcontroller circuit 4, signal after 4 pairs of signal conditioning circuits of microcontroller circuit 3 are handled carries out A/D conversion process and concentration calculating and exports to being connected on the liquid crystal display circuit 6 that microcontroller circuit 4 output terminals and PARA FORMALDEHYDE PRILLS(91,95) concentration information and monitoring of environmental information show in real time, the PARA FORMALDEHYDE PRILLS(91,95) concentration over-standard carries out the sound light alarming circuit 7 and the telecommunication circuit 8 of sound and light alarm, and telecommunication circuit 8 receives the concentration of formaldehyde information after microcontroller circuit 4 is handled and is transferred to and is connected on the host computer 9 that telecommunication circuit 8 output terminals and PARA FORMALDEHYDE PRILLS(91,95) concentration information and monitoring of environmental information are preserved in real time.
In the present embodiment, described formaldehyde sensor 2 is the MQ138 semiconductor gas sensor.Described microcontroller circuit 4 is the inner dsp chip that is integrated with the A/D converting unit.The dsp chip that described inside is integrated with the A/D converting unit is chip TMS320LF2407A.Described liquid crystal display circuit 6 is the liquid crystal display circuit based on the SED1335 liquid-crystal controller.Described sound light alarming circuit 7 is for the PARA FORMALDEHYDE PRILLS(91,95) concentration over-standard slightly exceeds standard, moderate exceeds standard and the sound light alarming circuit of three grades of warnings of severe overweight.
The course of work of the present utility model is: the utility model is placed indoor, car is interior or other need carry out the occasion of concentration of formaldehyde monitoring, after system opens, power circuit 1 begins power supply for each power unit, at first be provided with by 5 pairs of monitor parameters of keyboard input circuit, as the concentration of formaldehyde threshold value setting that exceeds standard, slightly exceed standard, moderate exceeds standard and three grades of alarm threshold values of severe overweight and type of alarm are provided with etc., concentration of formaldehyde simulating signal in 2 pairs of monitoring of environmental of formaldehyde sensor is gathered, amplify by 3 pairs of described formaldehyde sensor 2 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 4 pairs of signal conditioning circuits of microcontroller circuit 3 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 liquid crystal display circuit 6, and via telecommunication circuit 8 concentration of formaldehyde information and monitoring of environmental information are sent to host computer 9 and preserve in real time, if the concentration of formaldehyde that microcontroller circuit 4 calculates has surpassed the threshold value that exceeds standard that sets in advance, then microcontroller circuit 4 drives sound light alarming circuit 7 according to slightly exceeding standard of pre-setting, moderate exceeds standard and three grades of alarm threshold values of severe overweight and type of alarm send sound, 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 (6)
1. concentration of formaldehyde monitor, it is characterized in that: comprise microcontroller circuit (4) and give the power circuit (1) of each power unit power supply, the input termination of described microcontroller circuit (4) is carried out keyboard input circuit (5) and the signal conditioning circuit (3) that parameter is provided with to monitor, the formaldehyde sensor (2) that the input termination PARA FORMALDEHYDE PRILLS(91,95) concentration of analog signal of described signal conditioning circuit (3) is gathered in real time, described signal conditioning circuit (3) PARA FORMALDEHYDE PRILLS(91,95) sensor (2) the concentration of formaldehyde simulating signal of sampling is amplified, after handling, filtering and zeroing export to microcontroller circuit (4), signal after microcontroller circuit (4) is handled signal conditioning circuit (3) carries out A/D conversion process and concentration calculating and exports to being connected on the liquid crystal display circuit (6) that microcontroller circuit (4) output terminal and PARA FORMALDEHYDE PRILLS(91,95) concentration information and monitoring of environmental information show in real time, the PARA FORMALDEHYDE PRILLS(91,95) concentration over-standard carries out the sound light alarming circuit (7) and the telecommunication circuit (8) of sound and light alarm, and telecommunication circuit (8) receives the concentration of formaldehyde information after microcontroller circuit (4) is handled and is transferred to and is connected on the host computer (9) that telecommunication circuit (8) output terminal and PARA FORMALDEHYDE PRILLS(91,95) concentration information and monitoring of environmental information are preserved in real time.
2. according to the described a kind of concentration of formaldehyde monitor of claim 1, it is characterized in that: described formaldehyde sensor (2) is the MQ138 semiconductor gas sensor.
3. according to the described a kind of concentration of formaldehyde monitor of claim 1, it is characterized in that: described microcontroller circuit (4) is the inner dsp chip that is integrated with the A/D converting unit.
4. according to concentration of formaldehyde monitor in the described a kind of car of claim 3, it is characterized in that: the dsp chip that described inside is integrated with the A/D converting unit is chip TMS320LF2407A.
5. according to the described a kind of concentration of formaldehyde monitor of claim 1, it is characterized in that: described liquid crystal display circuit (6) is the liquid crystal display circuit based on the SED1335 liquid-crystal controller.
6. according to the described a kind of concentration of formaldehyde monitor of claim 1, it is characterized in that: described sound light alarming circuit (7) is for the PARA FORMALDEHYDE PRILLS(91,95) concentration over-standard slightly exceeds standard, moderate exceeds standard and the sound light alarming circuit of three grades of warnings of severe overweight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202751093U CN201732073U (en) | 2010-07-26 | 2010-07-26 | Formaldehyde concentration monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202751093U CN201732073U (en) | 2010-07-26 | 2010-07-26 | Formaldehyde concentration monitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201732073U true CN201732073U (en) | 2011-02-02 |
Family
ID=43523231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202751093U Expired - Fee Related CN201732073U (en) | 2010-07-26 | 2010-07-26 | Formaldehyde concentration monitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201732073U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012130006A1 (en) * | 2011-03-31 | 2012-10-04 | 香港纺织及成衣研发中心有限公司 | Method and system for measuring formaldehyde content in fabrics |
| CN103177533A (en) * | 2013-02-22 | 2013-06-26 | 张美沛 | Automatic carbon monoxide monitoring alarm system |
| CN105784795A (en) * | 2016-02-29 | 2016-07-20 | 浪潮软件集团有限公司 | Formaldehyde detection device and set top box |
| CN112179952A (en) * | 2020-09-25 | 2021-01-05 | 天津扬帆科技有限公司 | Anti-interference formaldehyde detection system for monitoring formaldehyde concentration in real time |
-
2010
- 2010-07-26 CN CN2010202751093U patent/CN201732073U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012130006A1 (en) * | 2011-03-31 | 2012-10-04 | 香港纺织及成衣研发中心有限公司 | Method and system for measuring formaldehyde content in fabrics |
| CN103177533A (en) * | 2013-02-22 | 2013-06-26 | 张美沛 | Automatic carbon monoxide monitoring alarm system |
| CN105784795A (en) * | 2016-02-29 | 2016-07-20 | 浪潮软件集团有限公司 | Formaldehyde detection device and set top box |
| CN112179952A (en) * | 2020-09-25 | 2021-01-05 | 天津扬帆科技有限公司 | Anti-interference formaldehyde detection system for monitoring formaldehyde concentration in real time |
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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: 20110202 Termination date: 20110726 |