CN105353397B - A kind of radon and thorium emanation continuous measuring device and method based on static collection - Google Patents
A kind of radon and thorium emanation continuous measuring device and method based on static collection Download PDFInfo
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- CN105353397B CN105353397B CN201510666644.9A CN201510666644A CN105353397B CN 105353397 B CN105353397 B CN 105353397B CN 201510666644 A CN201510666644 A CN 201510666644A CN 105353397 B CN105353397 B CN 105353397B
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Abstract
The present invention relates to a kind of radon based on static collection and thorium emanation continuous measuring device and method, wherein measuring device includes：Electrostatic collection room；It is arranged in the input pipe and close to the daughter filter of its arrival end；The aspiration pump connected with the efferent duct；It is arranged in the electrostatic collection chamber interior walls and the detector opposite with the input pipe；It is arranged on the indoor Temperature Humidity Sensor of the electrostatic collection；The signal and data processing system being connected with the detector and Temperature Humidity Sensor；And the display system being connected with the Temperature Humidity Sensor and signal and data processing system.The present invention can complete quick, direct, the continuous measurement to workplace and Environmental Radon and thorium emanation concentration in the case where being not required to drier and air being dried.
Description
Technical field
The present invention relates to a kind of radons in workplace and environment and thorium emanation monitoring technology more particularly to one kind to be based on
The radon and thorium emanation continuous measuring device and method of static collection.
Background technology
Radon is (i.e.222Rn) with thorium emanation (i.e.220Rn radioactivity inert gas) is belonged to, is the main next of natural radiation irradiation
Almost just there is thorium emanation in one of source, the place there are radon.But the concern that people endanger thorium emanation in environment and its daughter will be lacked
Much.It is reported according to UNSCEAR 2000, the year generated in natural radiation to the public is in effective dose, the dosage of radon and its daughter
The 50% of total effective dose is accounted for, the effective dose and the ratio of radon and its daughter dosage that thorium emanation and its daughter generate are by original
6% be increased to 9%.And the research of the hazard assessment and its behavioural characteristic of Environmental Radon and thorium emanation and daughter all be unable to do without radon
It is measured with thorium emanation and its daughter.Therefore, continuous, stable, the reliable measurement of radon and thorium emanation is to realize radon and thorium emanation danger
The key of evil evaluation.
Currently used mixing radon and thorium emanation method for continuous measuring include：Double Filter, scintillation chamber's time expander method, solid core
Track horizontal survey method, activated carbon box method, active carbon filter paper method, static collection.And wherein realize the device of Double Filter
Volume is larger, heavy, and disturbs excessive；Although nuclear track method is high with activated carbon box method accuracy, time of measuring is too long；Electrostatic
Collecting method is adapted to continuous and transient measurement, and can with the variation of continuous monitoring Environmental Radon and thorium emanation concentration, but the drawback is that
Electrostatic field is affected by air humidity, it is necessary to which drier is dehumidified or humidity amendment.
The content of the invention
In order to solve the above-mentioned problems of the prior art, the present invention is intended to provide a kind of radon based on static collection and
Thorium emanation continuous measuring device and method, directly to measure radon and thorium emanation concentration under mixing radon and thorium emanation measuring environment,
And be not required to drier and air is dried, realize the continuous prison to workplace and Environmental Radon and thorium emanation concentration level
It surveys.
A kind of radon and thorium emanation continuous measuring device based on static collection described in one of present invention, including：
Electrostatic collection room is connected with an input pipe and an efferent duct；
It is arranged in the input pipe and close to the daughter filter of its arrival end；
The air of the radon containing mixing and thorium emanation is pumped into institute by the aspiration pump connected with the efferent duct from the input pipe
Electrostatic collection room is stated, to collect radon decay generation in the electrostatic collection room218What Po particles and thorium emanation decay generated216Po
Particle；
It is arranged in the electrostatic collection chamber interior walls and the detector opposite with the input pipe, described in detection218Po
The first α particles of 6.00MeV that son decay generates and described216The 2nd α particles for the 6.78MeV that Po particle decays generate, and
Export corresponding detectable signal；
The indoor Temperature Humidity Sensor of the electrostatic collection is arranged on, measures the indoor humiture of electrostatic collection simultaneously
Export corresponding temperature-humidity signal；
The signal and data processing system being connected with the detector and Temperature Humidity Sensor；And
The display system being connected with the Temperature Humidity Sensor and signal and data processing system；
Wherein, the signal and data processing system includes：
Signal amplification module receives and amplifies the detectable signal；
The analog-to-digital conversion module being connected with the signal amplification module carries out modulus to the amplified detectable signal
It converts and exports corresponding conversion signal；
The particle counting module being connected with the analog-to-digital conversion module, according to the conversion signal to the described first α
Son and the 2nd α particles are screened, and obtain the count value of the first α particles and the count value of the 2nd α particles respectively；
The overlap of peaks correcting module being connected with the particle counting module, according to default overlap of peaks factor pair
The count value of one α particles and the count value of the 2nd α particles carry out overlap of peaks amendment；
The iterated revision module being connected with the overlap of peaks correcting module uses iterative amendment act and is changed according to default
The count value of count value and the 2nd α particles for modifying factor the first α particles revised to overlap of peaks is iterated
It corrects；
The humiture correcting module being connected with the iterated revision module, according to the temperature-humidity signal and default
Temperature and humidity carries out humiture to the count value of the first α particles after iterated revision and the count value of the 2nd α particles
It corrects；And
The concentration calculation module being connected with the humiture correcting module, according to revised first α of humiture
The count value of particle and the count value of the 2nd α particles calculate the concentration value for obtaining radon and thorium emanation, and by the radon and thorium emanation
Concentration value export to the display system for its storage and display.
In the above-mentioned radon based on static collection and thorium emanation continuous measuring device, the display system includes：With
The Temperature Humidity Sensor and concentration calculation module connection database, be connected respectively with the database data display mould
Block, data inquiry module and data removing module connect with the data disaply moudle, data inquiry module and data removing module
The touch display screen connect and the parameter setting module being connected with the touch display screen.
In the above-mentioned radon based on static collection and thorium emanation continuous measuring device, described device further include for
What the electrostatic collection room, aspiration pump, detector, Temperature Humidity Sensor, signal and data handling system and display system were powered
Power module.
In the above-mentioned radon based on static collection and thorium emanation continuous measuring device, the aspiration pump is also vented with one
Pipe connects.
In the above-mentioned radon based on static collection and thorium emanation continuous measuring device, the detector is ion implanting
Surface passivation detector.
In the above-mentioned radon based on static collection and thorium emanation continuous measuring device, contain in the daughter filter
Glass fiber filter.
In the above-mentioned radon based on static collection and thorium emanation continuous measuring device, the aspiration pump is flow rate range
In the electromagnetic masking constant current aspiration pump of 3~6L/min.
In the above-mentioned radon based on static collection and thorium emanation continuous measuring device, the electrostatic collection room is volume
Chamber is measured for the aluminium alloy of 1.5L.
A kind of radon and thorium emanation method for continuous measuring based on static collection described in the two of the present invention, including following
Step：
Step S1, provides the radon based on static collection as described in any one in claim 1-8 and thorium emanation connects
Continuous measuring device；
The air of the radon containing mixing and thorium emanation is pumped into the electrostatic collection room by the aspiration pump, used by step S2
Static collection collects what radon decay generated in the electrostatic collection room218What Po particles and thorium emanation decay generated216Po particles；
Step S3 is detected by the detector218Po particle decays generate 6.00MeV the first α particles and216Po
The 2nd α particles for the 6.78MeV that particle decay generates, and export corresponding detectable signal；
Step S4 is amplified the detectable signal by the signal amplification module；
Step S5 carries out analog-to-digital conversion and the output phase by the analog-to-digital conversion module to the amplified detectable signal
The conversion signal answered；
Step S6, by the particle counting module according to the conversion signal to the first α particles and the 2nd α particles
It is screened, and obtains the count value of the first α particles and the count value of the 2nd α particles respectively；
Step S7 passes through the meter of the overlap of peaks correcting module the first α particles according to default overlap of peaks factor pair
The count value of numerical value and the 2nd α particles carries out overlap of peaks amendment；
Step S8, by the iterated revision module using iterative amendment act and according to default iterated revision factor pair peak
It is overlapped the count value of the revised first α particles and the count value of the 2nd α particles is iterated amendment；
Step S9 measures the indoor humiture of the electrostatic collection by the Temperature Humidity Sensor and exports corresponding temperature
Moisture signal, and by the humiture correcting module according to the temperature-humidity signal and default Temperature and humidity to iteration
The count value of the revised first α particles and the count value of the 2nd α particles carry out humiture amendment；And
Step S10, by the concentration calculation module according to the count value of the revised first α particles of humiture with
And the 2nd the count values of α particles calculate the concentration value for obtaining radon and thorium emanation, and by the concentration value of the radon and thorium emanation export to
The display system is for its storage and display.
As a result of above-mentioned technical solution, the present invention is sampled by using aspiration pump, makes the radon containing mixing and thorium
The air emanated enters electrostatic collection room with certain flow velocity after daughter filter, so that radon and thorium emanation decay generated
Positively charged218Po particles and216Po particles are adsorbed onto detector surface under the action of electrostatic field, are then detected by detector
To its surface218Po particles and216Po particles further decay generation 6.00MeV the first α particles and 6.78MeV second
α particles, and binding signal is identified first, second α particles with data handling system and counts respectively, and then these are counted
Numerical value obtained after overlap of peaks amendment, iterated revision and humiture are corrected the concentration value of radon and thorium emanation, so as to be not required to
While drier is completed in the case that air is dried to workplace and Environmental Radon and thorium emanation concentration, it is quick,
Directly, continuous measurement.
Description of the drawings
Fig. 1 is the structural representation of a kind of radon and thorium emanation continuous measuring device based on static collection of one of the present invention
Figure；
Fig. 2 be one of the present invention a kind of radon and thorium emanation continuous measuring device based on static collection in signal and number
According to the structure diagram of processing system；
Fig. 3 be one of the present invention a kind of radon and thorium emanation continuous measuring device based on static collection in display system
Structure diagram.
Specific embodiment
Below in conjunction with the accompanying drawings, presently preferred embodiments of the present invention is provided, and is described in detail.
Please refer to Fig.1-3, one of present invention, i.e., a kind of radon and thorium emanation continuous measuring device based on static collection,
Including：
Electrostatic collection room 1 is connected with an input pipe 11 and an efferent duct 12；
It is arranged in input pipe 11 and close to the daughter filter 2 of its arrival end；
The aspiration pump 3 for connecting with efferent duct 12 and being connected with an exhaust pipe 31, by the radon containing mixing and the air of thorium emanation
Electrostatic collection room 1 is pumped into from input pipe 11, to collect radon decay generation in the electrostatic collection room 1218Po particles and thorium emanation
What decay generated216Po particles；
Detector 4 on 1 inner wall of electrostatic collection room and opposite with input pipe 11 is arranged on, is detected218Po particle decays are produced
The first α particles of raw 6.00MeV and216The 2nd α particles for the 6.78MeV that Po particle decays generate, and export corresponding visit
Survey signal；
The Temperature Humidity Sensor 5 being arranged in electrostatic collection room 1 measures the humiture in electrostatic collection room 1 and output
Corresponding temperature-humidity signal；
The signal and data processing system 6 being connected with detector 4 and Temperature Humidity Sensor 5；
The display system 7 being connected with Temperature Humidity Sensor 5 and signal and data processing system 6；And
For to electrostatic collection room 1, aspiration pump 3, detector 4,6 and of Temperature Humidity Sensor 5, signal and data handling system
The power module (not shown) that display system 7 is powered.
Specifically, signal and data processing system 6 includes：
The signal amplification module 61 being connected with detector 4 receives and amplifies detectable signal；
The analog-to-digital conversion module 62 being connected with signal amplification module 61 carries out analog-to-digital conversion to amplified detectable signal
And export corresponding conversion signal；
The particle counting module 63 being connected with analog-to-digital conversion module 62, according to conversion signal to the first α particles and the 2nd α
Particle is screened, and obtains the count value of the first α particles and the count value of the 2nd α particles respectively；
The overlap of peaks correcting module 64 being connected with particle counting module 63, according to default the first α of overlap of peaks factor pair
The count value of particle and the count value of the 2nd α particles carry out overlap of peaks amendment；
The iterated revision module 65 being connected with overlap of peaks correcting module 64 uses iterative amendment act and is changed according to default
The count value of count value and the 2nd α particles for modifying factor the first α particles revised to overlap of peaks is iterated amendment；
The humiture correcting module 66 being connected with iterated revision module 65 exports warm and humid according to Temperature Humidity Sensor 5
Signal and default Temperature and humidity are spent to the count value of the first α particles after iterated revision and the counting of the 2nd α particles
Value carries out humiture amendment；And
The concentration calculation module 67 being connected with humiture correcting module 66, according to the revised first α particles of humiture
Count value and the count values of the 2nd α particles calculate the concentration value for obtaining radon and thorium emanation, and by the dense of the radon and thorium emanation
Angle value is exported to display system 7 for its storage and display.
Display system 7 includes：The database 71 that is connected with Temperature Humidity Sensor 5 and concentration calculation module 67, respectively with
(it is mainly used for showing time of measuring progress, measurement period value, radon and thorium emanation the data disaply moudle 72 that database 71 connects
Concentration value, displays temperature, humidity and current time etc.), (it is mainly used for Query Dates, time, radon to data inquiry module 73
Concentration value, thorium emanation concentration value, temperature during measurement, humidity, measurement period etc.) and data removing module 74 (it is mainly used for
Delete of that month data and whole divided datas etc.), connect with data disaply moudle 72, data inquiry module 73 and data removing module 74
(it is mainly used for measurement period and sets for the touch display screen 75 connect and the parameter setting module 76 being connected with touch display screen 75
It puts, instrument scale factor is set, and instrument parameter only just can modify and set when carrying out scale).
In the present embodiment, electrostatic collection room 1 is that volume measures chamber for the aluminium alloy of 1.5L or so, and it is carried out
Black conductive oxidation technology, to reduce interference of the illumination to the probe of detector 4；It is filtered in daughter filter 2 containing glass fibre
Film, filter efficiency 99.9%；Aspiration pump 3 is flow rate range in the electromagnetic masking constant current aspiration pump of 3~6L/min, can
Reduce interference of the aspiration pump 104 to particle counting of popping one's head in；Detector 4 is ion implanting surface passivation (PIPS) detector；In addition,
In the present invention also using isolated from power design (such as probe portion is further formed using preamplifier and detector, with
Reduce influence of the background noise of circuit generation between detector and preamplifier to measuring signal；By aspiration pump away from detection
Device, and therebetween material object is set to be isolated；Low noise PIPS detection booster power design) with reduce power initiation and
Air pump shakes the interference to the probe of detector 4；Touch display screen 75 is 5 cun of color screen displays with touch function.
The operation principle of the present invention, i.e. a kind of the radon and thorium emanation based on static collection of the two of the present invention continuously measure
Method comprises the following steps：
Step S1 provides the radon and thorium emanation continuous measuring device based on static collection of said structure；
Step S2 is filtered the air of the radon containing mixing and thorium emanation with certain flow velocity by aspiration pump 3 through efficient daughter
Electrostatic collection room 1 is pumped into after device 2, collects what radon decay generated in the electrostatic collection room 1 using static collection218Po particles
It is generated with thorium emanation decay216Po particles (above-mentioned air is then discharged via aspiration pump 3 and exhaust pipe 31)；
Step S3 is detected by detector 4218Po particle decays generate 6.00MeV the first α particles and216Po
The 2nd α particles for the 6.78MeV that son decay generates, and export corresponding detectable signal；
Step S4 is amplified detectable signal by signal amplification module 61；
Step S5 carries out amplified detectable signal by analog-to-digital conversion module 62 analog-to-digital conversion and exports corresponding turn
Change signal；
Step S6 screens the first α particles and the 2nd α particles according to conversion signal by particle counting module 63,
And the count value of the first α particles and the count value of the 2nd α particles are obtained respectively；
Step S7, by overlap of peaks correcting module 64 according to the count value of default the first α particles of overlap of peaks factor pair with
And the 2nd α particles count value carry out overlap of peaks amendment；Specifically, due to the first generation using PIPS detectors to radon
Body218The first α particles of 6.00MeV and the first generation daughter of thorium emanation that Po particles generate216The 6.78MeV's that Po particles generate
When 2nd α particles are detected, for the α particles of the latter due to energy loss, past energy, which occurs, in power spectrum summit reduces dragging for direction
Tail has part216The 2nd α particles that Po particles generate enter218The energy area for the 6.00MeV that Po particles generate, so as to cause height
Energy α particle countings reduce, and low energy alpha particle counts increase, and (overlap of peaks of alpha energy spectrum is affected by various factors, these factor bags
It includes：Concentration of aerosol etc. when measuring condition, detector charactorizations, the self absorption factor of filter membrane, sampling)；However, radon, thorium emanation
How respective concentration changes, Progeny of thoron216The distributed areas of the 2nd α particles for the 6.78MeV that Po particles generate can be recognized
It is to determine, what corresponding overlap factor was also to determine, i.e.,216The 2nd α particles for the 6.78MeV that Po particles generate are fallen into218The population in the energy area for the 6.00MeV that Po particles generate accounts for216The ratio of total α populations for the 6.78MeV that Po particles generate is
Definite, it is possible to it is realized by introducing the overlap peak factor218The first α particle countings for the 6.00MeV that Po particles generate
With216The overlap of peaks amendment of the 2nd α particle countings for the 6.78MeV that Po particles generate eliminates shadow of the overlap of peaks to measurement result
It rings；
Step S8, by iterated revision module 65 using iterative amendment act and according to default iterated revision factor pair peak weight
It folds the count value of revised first α particles and the count value of the 2nd α particles is iterated amendment, so as to eliminate in radon and thorium
It is measured several times before in the continuous measurement emanated remaining218Po particles,216The first, second α particle countings that Po particles generate are to working as
Secondary measurement218Po particles,216The influence for the first, second α particle countings that Po particles generate；
Step S9 measures the humiture in electrostatic collection room 1 by Temperature Humidity Sensor 5 and exports corresponding humiture and believes
Number, and pass through humiture correcting module 66 according to temperature-humidity signal and default Temperature and humidity (i.e. in Standard Radon Chamber
The one article of humiture gone out is to the fair curve of radon consistence) to the count value and the 2nd α particles of the first α particles after iterated revision
Count value carry out humiture amendment, dried therefore without drier into the indoor air of electrostatic collection；
Step S10, by concentration calculation module 67 according to the count value and second of the revised first α particles of humiture
The count value of α particles calculates the concentration value for obtaining radon and thorium emanation, and the concentration value of the radon and thorium emanation is exported to display and is
System 7 is for its storage and display.
In conclusion the present invention has the following advantages：
1st, the present invention, which realizes, can simultaneously and continuously measure radon and thorium emanation concentration；
2nd, the present invention in measurement without the air of extraction be dried, so as to reduce radon and when thorium emanation measures
Operating cost and operation；
3rd, the radon in the present invention and thorium emanation continuous measuring device is simple in structure, maintenance cost and difficulty are relatively low.
It is above-described, it is only presently preferred embodiments of the present invention, is not limited to the scope of the present invention, of the invention is upper
Stating embodiment can also make a variety of changes.What i.e. every claims and description according to the present patent application were made
Simply, equivalent changes and modifications falls within the claims of patent of the present invention.The not detailed description of the present invention is
Routine techniques content.
Claims (9)
1. a kind of radon and thorium emanation continuous measuring device based on static collection, which is characterized in that described device includes：
Electrostatic collection room is connected with an input pipe and an efferent duct；
It is arranged in the input pipe and close to the daughter filter of its arrival end；
The aspiration pump connected with the efferent duct takes out the air of the undried radon containing mixing and thorium emanation from the input pipe
Enter the electrostatic collection room, to collect radon decay generation in the electrostatic collection room218Po particles and thorium emanation decay generate
's216Po particles；
It is arranged in the electrostatic collection chamber interior walls and the detector opposite with the input pipe, described in detection218Po particles decline
Become the first α particles of 6.00MeV that generate and described216The 2nd α particles for the 6.78MeV that Po particle decays generate, and export
Corresponding detectable signal；
The indoor Temperature Humidity Sensor of the electrostatic collection is arranged on, measure the indoor humiture of the electrostatic collection and is exported
Corresponding temperature-humidity signal；
The signal and data processing system being connected with the detector and Temperature Humidity Sensor；And
The display system being connected with the Temperature Humidity Sensor and signal and data processing system；
Wherein, the signal and data processing system includes：
Signal amplification module receives and amplifies the detectable signal；
The analog-to-digital conversion module being connected with the signal amplification module carries out analog-to-digital conversion to the amplified detectable signal
And export corresponding conversion signal；
The particle counting module being connected with the analog-to-digital conversion module, according to the conversion signal to the first α particles and
2nd α particles are screened, and obtain the count value of the first α particles and the count value of the 2nd α particles respectively；
The overlap of peaks correcting module being connected with the particle counting module, according to the first α described in default overlap of peaks factor pair
The count value of particle and the count value of the 2nd α particles carry out overlap of peaks amendment；
The iterated revision module being connected with the overlap of peaks correcting module uses iterative amendment act and is repaiied according to default iteration
The count value of positive divisor the first α particles revised to overlap of peaks and the count value of the 2nd α particles are iterated amendment；
The humiture correcting module being connected with the iterated revision module, according to the temperature-humidity signal and default warm and humid
It spends the count value of the first α particles after factor pair iterated revision and the count value of the 2nd α particles carries out humiture amendment,
Wherein, the Temperature and humidity is the fair curve of a humiture being drawn in Standard Radon Chamber to radon consistence；And
The concentration calculation module being connected with the humiture correcting module, according to the revised first α particles of humiture
Count value and the count values of the 2nd α particles calculate the concentration value for obtaining radon and thorium emanation, and by the dense of the radon and thorium emanation
Angle value is exported to the display system for its storage and display.
2. radon and thorium emanation continuous measuring device according to claim 1 based on static collection, which is characterized in that institute
Stating display system includes：The database that is connected with the Temperature Humidity Sensor and concentration calculation module, respectively with the data
Data disaply moudle, data inquiry module and the data removing module of storehouse connection, with the data disaply moudle, data query mould
Block and the data removing module touch display screen connected and the parameter setting module being connected with the touch display screen.
3. radon and thorium emanation continuous measuring device according to claim 1 based on static collection, which is characterized in that institute
Device is stated to further include for the electrostatic collection room, aspiration pump, detector, Temperature Humidity Sensor, signal and data processing system
System and the power module of display system power supply.
4. radon and thorium emanation continuous measuring device according to claim 1 based on static collection, which is characterized in that institute
Aspiration pump is stated also to connect with an exhaust pipe.
5. radon and thorium emanation continuous measuring device according to claim 1 based on static collection, which is characterized in that institute
Detector is stated as ion implanting surface passivation detector.
6. radon and thorium emanation continuous measuring device according to claim 1 based on static collection, which is characterized in that institute
It states in daughter filter and contains glass fiber filter.
7. radon and thorium emanation continuous measuring device according to claim 1 based on static collection, which is characterized in that institute
It is electromagnetic masking constant current aspiration pump of the flow rate range in 3~6L/min to state aspiration pump.
8. radon and thorium emanation continuous measuring device according to claim 1 based on static collection, which is characterized in that institute
It is that the aluminium alloy that volume is 1.5L measures chamber to state electrostatic collection room.
9. a kind of radon and thorium emanation method for continuous measuring based on static collection, which is characterized in that the described method includes following
Step：
Step S1, provides the radon based on static collection as described in any one in claim 1-8 and thorium emanation is continuously surveyed
Measure device；
The air of the undried radon containing mixing and thorium emanation is pumped into the electrostatic collection room by step S2 by the aspiration pump,
Collect what radon decay generated in the electrostatic collection room using static collection218What Po particles and thorium emanation decay generated216Po
Particle；
Step S3 is detected by the detector218Po particle decays generate 6.00MeV the first α particles and216Po particles
The 2nd α particles for the 6.78MeV that decay generates, and export corresponding detectable signal；
Step S4 is amplified the detectable signal by the signal amplification module；
Step S5 carries out analog-to-digital conversion to the amplified detectable signal by the analog-to-digital conversion module and exports corresponding
Conversion signal；
Step S6 carries out the first α particles and the 2nd α particles according to the conversion signal by the particle counting module
It screens, and obtains the count value of the first α particles and the count value of the 2nd α particles respectively；
Step S7 passes through the count value of the overlap of peaks correcting module the first α particles according to default overlap of peaks factor pair
And the 2nd α particles count value carry out overlap of peaks amendment；
Step S8, by the iterated revision module using iterative amendment act and according to default iterated revision factor pair overlap of peaks
The count value of the revised first α particles and the count value of the 2nd α particles are iterated amendment；
Step S9 measures the indoor humiture of the electrostatic collection by the Temperature Humidity Sensor and exports corresponding humiture
Signal, and by the humiture correcting module according to the temperature-humidity signal and default Temperature and humidity to iterated revision
The count value of the first α particles afterwards and the count value of the 2nd α particles carry out humiture amendment, wherein, the humiture
The factor is the fair curve of a humiture being drawn in Standard Radon Chamber to radon consistence；And
Step S10, by the concentration calculation module according to the count value of the revised first α particles of humiture and
The count value of two α particles calculates the concentration value for obtaining radon and thorium emanation, and the concentration value of the radon and thorium emanation is exported to described
Display system is for its storage and display.
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| CN105866817B (en) * | 2016-03-21 | 2018-11-06 | 安徽工程大学 | A kind of radon and its daughter measuring device |
| CN109031387A (en) * | 2018-05-23 | 2018-12-18 | 衡阳师范学院 | The device and method of rapid draing static collection emanometer measurement chamber |
| CN108614289B (en) * | 2018-06-01 | 2020-01-24 | 衡阳师范学院 | Synchronous value-fixing device and method for radon exhalation rate measuring instrument |
| CN109655871B (en) * | 2019-01-21 | 2020-08-11 | 衡阳师范学院 | Electrostatic collection type radon measuring method and device with high detection efficiency and without influence of humidity |
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