CN107505278A - A kind of online gas concentration lwevel monitoring instrument and detection method - Google Patents
A kind of online gas concentration lwevel monitoring instrument and detection method Download PDFInfo
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- CN107505278A CN107505278A CN201710844140.0A CN201710844140A CN107505278A CN 107505278 A CN107505278 A CN 107505278A CN 201710844140 A CN201710844140 A CN 201710844140A CN 107505278 A CN107505278 A CN 107505278A
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- telegon
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- mobile phone
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 27
- 238000001514 detection method Methods 0.000 title description 9
- 238000013480 data collection Methods 0.000 claims abstract description 9
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 31
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 25
- 239000001569 carbon dioxide Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- 238000004458 analytical method Methods 0.000 claims description 8
- 239000011521 glass Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 6
- 238000013461 design Methods 0.000 abstract description 5
- 238000001745 non-dispersive infrared spectroscopy Methods 0.000 abstract description 3
- 238000004321 preservation Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 22
- 238000005259 measurement Methods 0.000 description 18
- 229960004424 carbon dioxide Drugs 0.000 description 9
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000011017 operating method Methods 0.000 description 2
- 239000004408 titanium dioxide Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 230000002070 germicidal effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000012546 transfer Methods 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
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
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- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Biological Materials (AREA)
Abstract
A kind of online gas concentration lwevel monitoring instrument, including sensor assembly 1, data collection station 2, power module 3, telegon 4, PC 5, mobile phone A pp 6.The present invention is realized to region CO such as industry and sphere of lifes using the sensor based on NDIR principle and ZigBee technology2The collection of concentration and for a long time continuous on-line monitoring, PC IP address is logged in by WIFI or GPRS using mobile phone A pp remote real time on-line monitoring CO can be achieved2Gas concentration value and its ambient temperature, real-time display CO is realized by Software for Design platform VS2010 design virtual interfaces on PC2Function, the automaticity such as gas concentration value and its ambient temperature and the preservation of progress data, drawing data monitoring curve are higher.
Description
Technical field
The invention belongs to environmental monitoring, and in particular to a kind of gas concentration lwevel monitoring instrument and detection method.
Background technology
Realize CO2Important parameter of the gas concentration real time on-line monitoring with analysis as the safe efficient production of various fields.
Therefore R ＆ D design goes out a CO2Concentration on-line computing model has a good application prospect.
For forward end gas detection method, at present both at home and abroad conventional gas determination method have infrared absorption method,
Gas chromatography, electrochemical process, Electric Method and interferometric method etc..Wherein detection side of the infrared absorption method as non-direct contact type
Method, there is good selectivity, fast response time, ageing-resistant, anti-knock properties are good, signal to noise ratio is high and measurement accuracy is high extensive
Using.It can be divided into two kinds for infrared absorption technology：Light splitting type and overstepping one's bounds light type, rather than light splitting type is because it is in the same air chamber of use
On the premise of can realize detection to various mixed gases concentration by changing optical filter, its it is simple in construction and be easily installed with
Maintenance is widely used in infrared analysis detector.
Domestic and international existing CO2Detector has：U.S. Honeywell sensepoint xcd carbon dioxide detectors, it can be surveyed
Gaseous species are more, scope is wide.The portable carbon dioxide detectors of PG610-CO2, the sensitivity having had and repeatability, and use
Organic light emitting display, remain to be clearly seen detection data at a distance, anti-seismic performance is good, high-low temperature resistant, and it is internally integrated great Rong
Data recording function is measured, is easy to user's gathered data and analysis, while have data upload function.KQ500D-CO2 intelligent two
Carbonoxide detector, there is the spies such as performance is remarkable, be swift in response, stable and reliable operation, convenient for installation and maintenance, measurement accuracy is high
Point, industry spot safety monitoring is greatly met to the stable operation of equipment high reliability and quick reaction time.But all
There is no the function of displaying data in real-time.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of to CO2Gas concentration carries out continuous on-line monitoring for a long time
Instrument and monitoring method；Using the sensor based on NDIR principle, in terms of the remote monitoring to data parameters, make
With ZigBee technology, the data at scene are transferred to remote monitoring equipment by ZigBee-network and are monitored, realize titanium dioxide
The real-time digital display of concentration of carbon, on-line monitoring.
The technical scheme is that：
The gas concentration lwevel online monitoring instruments provided include：Sensor assembly, data collection station, power supply mould
Block, telegon, PC, mobile phone A pp.The telegon is attached with PC by USB；The mobile phone A pp by WIFI or
GPRS logs in the connection of PC IP address；The data collection station is connected with telegon by ZigBee；Physically, the electricity
Source module is connected with sensor assembly and data collection station, and wherein sensor assembly is connected with data collection station.
Instrument operation principle：Live CO is perceived by sensor assembly2The environmental information such as gas and environment temperature, passes through data
Acquisition terminal carries out analog-to-digital conversion analysis and packing to the data collected, is then sent to telegon via wireless network, assists
Adjust device that the environmental information after processing is transferred into PC via serial communication, the on-line monitoring to environmental information realized by PC,
The functions such as display and storage including data, also real-time display can be carried out to monitoring information by mobile phone A pp.
Detect operating procedure：
1st, the model AZ7788 CO2 by the such as TaiWan, China Heng Xin scientific ＆ technical corporation production of existing CO2 detectors are detected
Instrument is placed in sealed glass container simultaneously with this patent capnometer, turns on the power module switch.
2nd, telegon is connected with PC, opens PC data monitoring interface, open mobile phone A pp clients connection WIFI
PC IP address is logged in, carries out and receives data preparation.
3rd, using the model CNO2-13 carbon dioxide maker of carbon dioxide maker such as Di Ci companies production to close
CO is filled with envelope container2Gas.
4th, observe, record and analyze.
The method have the characteristics that：
1. the present invention uses the sensor measures carbon dioxide concentration based on NDIR principle, by various concentrations
CO2Gas carries out multiplicating measurement, show that relative error concentrates on -2.48%~3.32% by experimental calculation result
Between, Standard deviation-Range is 2.759%~4.149%, to the CO of same concentrations2The results change model obtained when measuring
Enclosing can control in the range of 4.33%~5.89% greatly, and when system is in stable state average response time in 7s
It is interior.
2. present invention incorporates ZigBee wireless network transmission technologies, realize to the real time on-line monitoring of data message with
Preservation, drawing data monitoring curve etc., automaticity is higher.
3. the present invention possesses mobile phone A pp, it can be networked by WIFI or GPRS and input PC IP address, you can realize long distance
From real time on-line monitoring CO2Gas concentration value and its ambient temperature.
Brief description of the drawings
Fig. 1 apparatus structure schematic diagrames of the present invention
Fig. 2 low concentrations CO2Test data curve
Fig. 3 high concentration COs2Test data curve
Embodiment
This patent is further elaborated below in conjunction with the accompanying drawings.
A kind of online gas concentration lwevel monitor, such as Fig. 1, its composition include：Sensor assembly 1, data collection station
2nd, power module 3, telegon 4, PC 5, mobile phone A pp 6.
In the present invention, the sensor assembly 1 is from the bright model MH-Z14 carbon dioxide sensors for containing science and technology production
And model DHT11 Temperature Humidity Sensors；Described data collection station 2 and the selection of telegon 4 are that TI companies develop
CC2530 chips；The data transfer of telegon 4 and PC 5 uses PL2303 level conversion core meters, is passed by using USB
It is defeated, realize the serial communication of external equipment PC 5 and telegon 4；The number that PC 5 is designed by Software for Design platform VS2010
Serial ports corresponding to being selected according to observation interface simultaneously clicks on opening serial ports button, realizes the real-time display of data and going through according to preservation
History data draw tendency chart, input the IP address of PC 5 in the system at data monitoring interface is set, and click on and start network clothes
It is engaged in establish a server, PC 5 constantly gives the data forwarding received the client being connected on server；Mobile phone
App 6 can be networked by WIFI or GPRS and input PC IP address come connection server, the number forwarded by the reception server
According to realizing remote real time on-line monitoring CO2Gas concentration value and its ambient temperature.
The detection operating procedure of the present invention is as follows：
1. the model AZ7788 CO that will be produced by TaiWan, China Heng Xin scientific ＆ technical corporation2Detector and titanium dioxide of the present invention
Carbon monitor is placed in sealed glass container simultaneously, turns on the power module switch.The measurement model of capnometer of the present invention
Enclose for 0~5000ppm, to measure its property indices, including precision, repeatability error, relative error etc., with AZ7788
CO2Detector is as reference.
2. telegon is connected with PC, PC data monitoring interface is opened, opens mobile phone A pp clients connection WIFI
PC IP address is logged in, carries out and receives data preparation.
3. the model CNO2-13 carbon dioxide makers produced using Di Ci companies are filled with CO into sealing container2Gas
Body.It is required that not having other foreign gases in sealing container, and it is being filled with CO2It should be slowly filled with during gas, avoid being filled with as far as possible
Gas concentration is more than 5000ppm.
4. observation, record and analysis.First with model AZ7788 CO2Detector obtains 13 groups of CO2Concentration value conduct
The reference value of actual measurement data；Then using the monitor of this patent design to 13 groups of CO2Reference concentration gas difference is each heavy
Repetition measurement amount 10 times, gained measurement data record is as shown in table 1.Reference concentration value is by AZ7788 CO in table 12Detector obtains,
Capnometer measured value of the present invention is obtained by PC observation interface real-time display.Properties are carried out to data in table 1
Index analysis is as shown in table 2.CO in table 22Actual concentration is AZ7788 CO2Detector surveys concentration, and average value is obtained by formula (1)
Arrive, absolute error is obtained by formula (2), and relative error is obtained by formula (3), and standard deviation is obtained by formula (4), relative standard
Deviation is obtained by formula (5).
Wherein：For the average value of m gained of ith measurement point duplicate measurements；CijJth time is carried out for ith measurement point
Result obtained by during measurement；M represents the number of duplicate measurements, this patent duplicate measurements 10 times.
△=Cij-Ci
(2)
Wherein：CiRepresent ith measurement point CO2Actual value；△ represents absolute error.
Wherein：R is the range of measuring system, 0~5000ppm of range in this patent.δ represents relative error.
Wherein：σiFor the standard deviation that ith measurement point duplicate measurements m (m=10) is secondary.
Wherein：γiFor relative standard deviation.
The actual carbon dioxide concentration measurement result of table 1
The property indices data of table 2
Analysis understands that capnometer of the present invention has a preferable accuracy of detection more than, relative error concentrates on-
Between 2.48%~4.10%, relative error is floated in ± 5%, meets gas detecting instrument error requirements.By relative standard
Repeatability index of the deviation as system, gained relative standard deviation scope are 2.416%~4.149%, and explanation system has
Good repeatability.By Germicidal efficacy, when measuring system is in stable state, start to change CO2Gas concentration is to next
Untill subsystem is in stable state, the average response time of system is in 7s, and the response speed of the system is than very fast.By table 1
Obtained measurement result is divided into low concentration test data and high concentration test data, and Liang Zu concentration area is obtained using origin softwares
Between concentration values curve, as shown in Figure 2,3：The curve obtained to low concentration and high concentration fluctuates very weak, the width of fluctuation up and down
Also very little is spent, so capnometer of the present invention has very high stability.To the CO of same concentrations2Obtained when measuring
To results change scope can concentrate on 4.33%~5.88% greatly between, meet the requirement to stability of instrument.The present invention
Capnometer can real time on-line monitoring CO at a distance2Gas concentration value and its ambient temperature, automaticity compared with
It is high.
Claims (2)
- A kind of 1. online CO2Concentration monitor instrument, including：Sensor assembly（1）, data collection station（2）, power module（3）, It is characterized in that：Also include telegon（4）, PC（5）, mobile phone A pp（6）；The data collection station（2）With telegon（4） Connected by ZigBee；The telegon（4）With PC（5）It is attached by USB；Mobile phone A pp（6）Pass through WIFI or GPRS Network and input PC（5）IP address and PC（5）Connection.
- 2. with the instrument on-line checking CO described in claim 12The method of concentration, it is characterised in that comprise the following steps：（1）The model AZ7788 CO that will be produced by TaiWan, China Heng Xin scientific ＆ technical corporation2Detector is supervised with this patent carbon dioxide Survey instrument to be placed in sealed glass container simultaneously, turn on the power module switch；（2）Telegon is connected with PC, opens PC data monitoring interface, mobile phone A pp clients connection WIFI is opened and logs in PC IP address, carry out and receive data preparation；（3）The model CNO2-13 carbon dioxide makers produced using Di Ci companies are filled with gas into sealing container；（4）Observation, record and analysis.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710844140.0A CN107505278A (en) | 2017-09-19 | 2017-09-19 | A kind of online gas concentration lwevel monitoring instrument and detection method |
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| CN201710844140.0A CN107505278A (en) | 2017-09-19 | 2017-09-19 | A kind of online gas concentration lwevel monitoring instrument and detection method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109444068A (en) * | 2018-12-29 | 2019-03-08 | 郎溪杰博电器科技有限公司 | A kind of Fuzzy Predictive Control analysis system of infrared carbon sulfur analyzer |
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Application publication date: 20171222 |