CN110426495A - A kind of environmental monitoring method of calibration based on big data - Google Patents
A kind of environmental monitoring method of calibration based on big data Download PDFInfo
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- CN110426495A CN110426495A CN201910930864.6A CN201910930864A CN110426495A CN 110426495 A CN110426495 A CN 110426495A CN 201910930864 A CN201910930864 A CN 201910930864A CN 110426495 A CN110426495 A CN 110426495A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0006—Calibrating gas analysers
Abstract
The environmental monitoring method of calibration based on big data that the purpose of the present invention is to provide a kind of, by environment monitoring device described in multiple repairing weld in different temperatures, humidity and the reading of air pressure, and the gas concentration value based on multiple repairing weld and standard gas concentration value sequentially obtain the environment monitoring device in different temperatures, humidity and the modifying factor of air pressure, to obtain the modifying factor K of the environment monitoring device, it is possible to prevente effectively from environmental factor is interfered and environmental monitoring is caused to have the problem of error, the accuracy of environmental monitoring is improved.
Description
Technical field
The present invention relates to environmental monitoring technology fields, more particularly, to a kind of environmental monitoring verification side based on big data
Method.
Background technique
The method that current environmental is monitored is usually that environment monitoring device is placed in environment to be measured, then basis
The case where registration of environment monitoring device determines environment to be measured does not consider test device due to environmental parameter in measurement environment
Change and will lead to measurement error, when gas concentration especially in using gas sensor measurement environment, when environment to be measured
In the environmental parameters such as temperature, humidity, air pressure change, then will affect the measurement knot of gas sensor to a certain extent
Fruit.However, being in the prior art generally only only to carry out simple reading before actual test to environment monitoring device and reset with complete
At the calibration of environment monitoring device, the calibration changed based on environmental parameter is not carried out to environment monitoring device, it will not be to ring
The amendment that border monitoring device is read, therefore the accuracy of the measurement result of environment measuring apparatus in the prior art is not enough
Accurately, this little measurement error of influence that seems may result in the consequence for being difficult to make up in some cases.Especially pair
When toxicity stronger gasmetry, 1% measurement error is possible to result in the generation of intoxication accident.Therefore, how ring is improved
The measurement accuracy of border monitoring device, it is ensured that the measurement result of environment monitoring device not will receive the variation of measurement environment and become
Change, is then current problem urgently to be resolved.
Summary of the invention
The environmental monitoring method of calibration based on big data that the purpose of the present invention is to provide a kind of, can effectively solve existing
There is measurement error in the environment monitoring device in technology；The present invention is based on the methods of data analysis, obtain progressively
Environment monitoring device is in different temperatures, the modifying factor of the gentle pressure of humidity, it is possible to prevente effectively from environmental factor is interfered and caused
Environmental monitoring has the problem of error, improves the accuracy of environmental monitoring.
The purpose of the present invention is achieved through the following technical solutions:
A kind of environmental monitoring method of calibration based on big data, includes the following steps:
S1, operation is zeroed out to environment monitoring device, so that the initial reading of environment monitoring device is 0；
S2, environment monitoring device is placed in verification environment, being then injected into concentration is C0Calibrating gas, stand a period of time,
After ensuring that calibrating gas is evenly distributed in verification environment, measurement verifies gas concentration C of the environment at different temperatures T respectivelyT,
And thus obtain the modifying factor K of the environment monitoring device at different temperaturesT= C0/CT；
S3, sufficiently ventilation 1 hour is carried out to verification environment；
S4, concentration is re-injected as C0Calibrating gas, stand a period of time, it is ensured that calibrating gas is evenly distributed on verification environment
In after, gas concentration C of the measurement verification environment at different humidity W respectivelyW, and the environment monitoring device is thus obtained not
With the modifying factor K under humidity WW=C0/KTCW；
S5, sufficiently ventilation 1 hour is carried out to verification environment；
S6, concentration is re-injected as C0Calibrating gas, stand a period of time, it is ensured that calibrating gas is evenly distributed on verification environment
In after, gas concentration C of the measurement verification environment at different air pressure P respectivelyP, and the environment monitoring device is thus obtained not
With the modifying factor K under humidity Pp=C0/KTKWCp=CW/Cp；
The amendment of S7, the environment monitoring device respectively obtained based on step S2-S6 for different temperatures T, humidity W, air pressure P
The factor obtains the modifying factor K of the environment monitoring device are as follows:
K=Kp=CW/Cp。
Further, the environment monitoring device is the gas sensors such as carbon dioxide, sulfur dioxide, nitric oxide.
Further, the verification environment is that chamber, laboratory etc. can effectively carry out environment monitoring device verification
Space.
Further, further include step S8, using the environment monitoring device in environment to be measured gas concentration carry out
Measurement, and obtained gas concentration reading is CReading, then the reading after the environment monitoring device verification is CVerification=KCReading=CReading
CW/Cp。
Beneficial effects of the present invention: the present invention is based on the methods of big data analysis, pass through ambient environment described in multiple repairing weld
Monitoring device is in different temperatures, humidity and air pressure, and the gas concentration value and standard gas concentration value obtained based on multiple repairing weld
Sequentially, the environment monitoring device is obtained progressively in different temperatures, the modifying factor of the gentle pressure of humidity, to obtain institute
The modifying factor K of environment monitoring device is stated, it is possible thereby to by modifying factor K to the environment monitoring device in not equality of temperature
It spends, the actual measured value of the gentle pressure of humidity is modified, it is ensured that the accuracy of environmental monitoring.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment is cited below particularly, and cooperate
Appended attached drawing, is described in detail below.
Detailed description of the invention
Fig. 1 is implementation flow chart of the present invention.
Specific embodiment
1 invention is further described in detail with reference to the accompanying drawing.
Embodiment one:
Environmental monitoring method of calibration of one of the present embodiment based on big data, includes the following steps:
1. temperature factor makeover process
Operation is zeroed out to environment monitoring device, so that the initial reading of environment monitoring device is 0；
The carbon dioxide gas that concentration is 500ppm is injected into the laboratory that area is 10 square metres, stands a period of time,
Ensure calibrating gas be evenly distributed on verification environment in, and ensure indoor humidity it is constant be 46%, air pressure constant 101.3kPa；
With 0.5 DEG C for control interval, change experiment indoor environment temperature, measuring temperature respectively is the interior two at 16-20.5 DEG C
The concentration value C of carbonoxideT, it is specific that test result is as follows:
Then, according to above-mentioned test result, the method based on numerical fitting obtains the gas concentration measurement C under different temperatures TT
With the mapping relations curve of temperature T, and the modifying factor K of the environment monitoring device at different temperatures is thus obtainedT=C0/
CT.For example, environment temperature is 20 DEG C when actual test, modifying factor K at this timeT=500/500=1；The environment temperature when actual test
Degree is 17 DEG C, at this time modifying factor KT= 500/499.4=1.0012。
2. humidity factor makeover process
On the basis of above-mentioned modified to temperature factor, continuation is tested in above-mentioned laboratory, specific as follows:
Sufficiently ventilation 1 hour is carried out to above-mentioned laboratory；
The carbon dioxide gas that concentration is 500ppm is re-injected, stands a period of time, it is ensured that calibrating gas is evenly distributed on reality
Test in room, and ensure room temperature it is constant be 20 DEG C, air pressure constant 101.3kPa；
With 1% humidity interval, change experiment indoor environment humidity, measuring humidity respectively is the indoor carbon dioxide under 46%-50%
Concentration value CT, and indoor environment temperature T when test, it is specific that test result is as follows:
Then, according to above-mentioned test result, the method based on numerical fitting obtains the gas concentration measurement C under different humidityW
With the mapping relations curve of humidity W, and gas concentration C of the environment monitoring device at different humidity W is thus obtainedW, so
Afterwards, according to having obtained the modifying factor K of the environment monitoring device at different temperatures in abovementioned steps S2T, and when test
Environment temperature, the correction value under gas concentration under available different humidity W is KTCW；Finally, dense according to calibrating gas
Degree is C0It is K with correction valueTCWModifying factor K of the available environment monitoring device at different humidity WW=C0/KTCW。
For example, environment temperature is 20 DEG C when actual test environment humidity is 48%, and when air pressure is 101.3kPa, modifying factor K at this timeW=
C0/KTCW=500/(1×500.3)=0.999。
3. barometric factor makeover process
On the basis of above-mentioned temperature and humidity factor correction, further barometric factor is modified, specific as follows:
Sufficiently ventilation 1 hour is carried out to above-mentioned laboratory；
The carbon dioxide gas that concentration is 500ppm is re-injected, stands a period of time, it is ensured that calibrating gas is evenly distributed on reality
Test in room, and ensure room temperature it is constant be 20 DEG C, moisture constant 46%；
With the interval of 0.1kPa, change experiment indoor environment air pressure, measuring humidity respectively is the room under 101.0kPa-101.5kPa
The concentration value C of interior carbon dioxideT, and indoor environment temperature T and humidity W when test, it is specific that test result is as follows:
According to above-mentioned test result, the method based on numerical fitting obtains the gas concentration measurement C under different air pressuresPWith air pressure
The mapping relations curve of P, and it is hereby achieved that gas concentration C of the environment monitoring device at different humidity Pp；Then,
Modifying factor K of the environment monitoring device under different temperatures, humidity has been obtained according to abovementioned stepsT、KW, and when test
Environment temperature, humidity, the correction value under gas concentration under available different humidity W is KTKWCp；Finally, according to mark
Quasi- gas concentration is C0It is K with correction valueTKWCpModifying factor K of the available environment monitoring device at different air pressure Pp
=C0/KTKWCp.For example, the ambient humidity of test is 46% when actual test air pressure is 101.1, test environment temperature is 20
DEG C, modifying factor K at this timep=C0/KTKWCp=500/(1×1×499.5)=1.001。
As it can be seen that in the above process, respectively sequentially to the environment monitoring device in different temperatures T, humidity W, air pressure P environment
In reading be corrected, and every time amendment in all consider newest correction value, further ensure to the environmental monitoring fill
Set the accuracy of verification.
To sum up gained repairs different temperatures T, humidity W, air pressure P based on the environment monitoring device that respectively obtains
The modifying factor K of the available environment monitoring device of positive divisor are as follows:
K=Kp=C0/KTKWCp=C0CW/CTCp。
Embodiment two:
Further, for the mapping relations for corresponding to gas concentration measurement under above-mentioned acquisition different temperatures T, humidity W, air pressure P
Method respectively includes following steps:
1, for the gas concentration measurement C under different temperaturesTIt is including as follows with the mapping relations curve acquisition method of temperature T
Step:
S21, m group different temperatures T is obtained by the environment monitoring device measurement1、T2、……TmUnder corresponding gas concentration survey
Magnitude CT1、CT2、……CTm；Wherein, m is the positive integer more than or equal to 1；
S22, the method based on numerical fitting obtain the gas concentration measurement C under different temperaturesTWith the mapping relations of temperature T；
S23, the concentration value C based on calibrating gas0With the measured value C under different temperaturesTThe modifying factor of available different temperatures
Sub- KT= C0/CT。
2, for the gas concentration measurement C under different humidityWWith the mapping relations curve acquisition method of humidity W, including
Following steps:
S41, m group different humidity W is obtained by the environment monitoring device measurement1、W2、……WmUnder corresponding gas concentration survey
Magnitude CW1、CW2、……CWm；
S42, the method based on numerical fitting obtain the gas concentration measurement C under different humidityWWith the mapping relations of humidity W；
S43, based on the temperature correction factor K obtained in abovementioned stepsT, to actual measured value C under available different humidity WW
Value after verification is KTCW；
S44, the concentration value C based on calibrating gas0With the practical value K under different humidity after verifyingTCW, available difference
Modifying factor K under humidityW=C0/KTCW。
3, for the gas concentration measurement C under different air pressurespWith the mapping relations curve acquisition method of air pressure P, including
Following steps:
S61, the different air pressure P of m group are obtained by the environment monitoring device measurement1、P2、……PmUnder corresponding gas concentration survey
Magnitude CP1、CP2、……CPm；
S62, the method based on numerical fitting obtain the gas concentration measurement C under different air pressuresPWith the mapping relations of air pressure P；
S63, based on the temperature correction factor K obtained in preceding institute's stepT, humidity modifying factor Kp, under available difference air pressure P
To actual measured value CPValue after verification is KWKTCP；
S64, the concentration value C based on calibrating gas0From the practical value K under different air pressures after verifyingWKTCP, it is available not
With the modifying factor K under air pressurep=C0/KWKTCP。
So far, be respectively completed to the environment monitoring device in different temperatures T, different humidity W based on above-mentioned steps and
Reading verification under different air pressure P.The environment monitoring device is placed in the ring that temperature is T, humidity W, air pressure are P as a result,
When in border, the gas concentration actual read number that the environment monitoring device measurement obtains is that gas concentration reading is CReading, then by school
Check value after testing are as follows:
CVerification=KpCReading=CReadingC0/KTKWCp=CReadingCW/Cp。
Embodiment three:
Further, according to the actual situation, the environment monitoring device can be carbon dioxide, sulfur dioxide or nitric oxide etc.
Gas sensor.
Further, the laboratory in previous embodiment can also replace with chamber etc. according to actual needs can be effective
Carry out the space of environment monitoring device verification.
Further, the standing referred in abovementioned steps is specially 2 hours for a period of time.
Further, the numerical fitting is specifically as follows the NUMERICAL MATCH METHOD FORs such as straight line fitting, fitting of a polynomial.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (9)
1. a kind of environmental monitoring method of calibration based on big data, includes the following steps:
S1, operation is zeroed out to environment monitoring device, so that the initial reading of environment monitoring device is 0；
S2, environment monitoring device is placed in verification environment, being then injected into concentration is C0Calibrating gas, stand a period of time, really
After guarantor's calibrating gas is evenly distributed in verification environment, measurement verifies gas concentration C of the environment at different temperatures T respectivelyT, and
Thus the modifying factor K of the environment monitoring device at different temperatures is obtainedT= C0/CT；
S3, sufficiently ventilation 1 hour is carried out to verification environment；
S4, concentration is re-injected as C0Calibrating gas, stand a period of time, it is ensured that calibrating gas is evenly distributed on verification environment
In after, gas concentration C of the measurement verification environment at different humidity W respectivelyW, and the environment monitoring device is thus obtained not
With the modifying factor K under humidity WW=C0/KTCW；
S5, sufficiently ventilation 1 hour is carried out to verification environment；
S6, concentration is re-injected as C0Calibrating gas, stand a period of time, it is ensured that calibrating gas is evenly distributed on verification environment
In after, gas concentration C of the measurement verification environment at different air pressure P respectivelyP, and the environment monitoring device is thus obtained not
With the modifying factor K under humidity Pp=C0/KTKWCp=CW/Cp；
The amendment of S7, the environment monitoring device respectively obtained based on step S2-S6 for different temperatures T, humidity W, air pressure P
The factor obtains the modifying factor K of the environment monitoring device are as follows:
K=Kp=CW/Cp。
2. method of calibration according to claim 1, it is characterised in that: the environment monitoring device is carbon dioxide, dioxy
Change sulphur or nitric oxide gas sensor.
3. method of calibration according to claim 1, it is characterised in that: the verification environment is chamber or laboratory.
4. method of calibration according to claim 1, it is characterised in that: if the environment monitoring device environment temperature be T,
Gas concentration reading obtained in the actual environment monitoring that humidity is W, air pressure is P is CReading, then the environment monitoring device verification
Reading afterwards is CVerification=KCReading=CReadingCW/Cp。
5. method of calibration according to claim 1, it is characterised in that: the standing in described step S2, S4, S6 is for a period of time
Specially 2 hours.
6. method of calibration according to claim 1, it is characterised in that: the step S2 further comprises following steps:
S21, m group different temperatures T is obtained by the environment monitoring device measurement1、T2、……TmUnder corresponding gas concentration survey
Magnitude CT1、CT2、……CTm；
S22, the method based on numerical fitting obtain the gas concentration measurement C under different temperaturesTWith the mapping relations of temperature T；
S23, the concentration value C based on calibrating gas0With the measured value C under different temperaturesTThe modifying factor of available different temperatures
KT= C0/CT。
7. method of calibration according to claim 1, it is characterised in that: the step S4 further comprises following steps:
S41, m group different humidity W is obtained by the environment monitoring device measurement1、W2、……WmUnder corresponding gas concentration survey
Magnitude CW1、CW2、……CWm；
S42, the method based on numerical fitting obtain the gas concentration measurement C under different humidityWWith the mapping relations of humidity W；
S43, based on the temperature correction factor K obtained in step S2T, to actual measured value C under available different humidity WWVerification
Value afterwards is KTCW；
S44, the concentration value C based on calibrating gas0With the practical value K under different humidity after verifyingTCW, available difference
Modifying factor K under humidityW=C0/KTCW。
8. method of calibration according to claim 1, it is characterised in that: the step S6 further comprises following steps:
S61, the different air pressure P of m group are obtained by the environment monitoring device measurement1、P2、……PmUnder corresponding gas concentration survey
Magnitude CP1、CP2、……CPm；
S62, the method based on numerical fitting obtain the gas concentration measurement C under different air pressuresPWith the mapping relations of air pressure P；
S63, based on the temperature correction factor K obtained in step S2, S4T, humidity modifying factor Kp, under available difference air pressure P
To actual measured value CPValue after verification is KWKTCP；
S64, the concentration value C based on calibrating gas0From the practical value K under different air pressures after verifyingWKTCP, available difference
Modifying factor K under air pressurep=C0/KWKTCP。
9. according to the described in any item methods of calibration of claim 6-8, it is characterised in that: the numerical fitting is straight line fitting.
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Application publication date: 20191108 |