CN106443748A - High-precision wireless radiation dosage monitoring device and method - Google Patents
High-precision wireless radiation dosage monitoring device and method Download PDFInfo
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- CN106443748A CN106443748A CN201610693834.4A CN201610693834A CN106443748A CN 106443748 A CN106443748 A CN 106443748A CN 201610693834 A CN201610693834 A CN 201610693834A CN 106443748 A CN106443748 A CN 106443748A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/02—Dosimeters
- G01T1/023—Scintillation dose-rate meters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/02—Dosimeters
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Abstract
The invention discloses a high-precision wireless radiation dosage monitoring device and method. The monitoring device comprises multiple radiation dosage probes and a data collector. The radiation dosage probes are connected with the data collector through wireless network signals. The radiation dosage probes are connected with a low-energy-consumption power supply mechanism. The low-energy-consumption power supply mechanism comprises a ray detection component and a charge pump used for providing the work voltage. The data collector is connected with a server of the environment monitoring department through the GPRS. The monitoring device further comprises a high-capacity battery connected with the radiation dosage probes through wires. The ray detection component comprises a counter tube and a scintillation detector, wherein the counter tube is a GM counter tube and comprises a shell, a rechargeable battery and a circuit board, and the rechargeable battery and the circuit board are arranged in the shell. A data processing module, a power supply module and a communication module are integrated on the circuit board. A communication wire is arranged on the shell. The communication module is in coupling connection with the communication wire. The communication wire can receive and send WiFi signals.
Description
Technical field
The present invention relates to a kind of high precision wireless radiation dose monitoring device and monitoring method.
Background technology
It is known that with the fast development of China's economy, the quantity of the radioactive source in industrial undertaking also gets more and more.Put
The kind penetrating source is a lot, is widely used, not only in nuclear facilities, and research institutions, medical institutions, geology and coal exploration with
Exploitation, oil exploitation and all trades and professions such as oil refining, highway and bridge construction, machine-building and installation are all applied.With radiation
What the extensive application in source formed sharp contrast is：For a long time, the monitoring work of radioactive source is constantly in traditional manual monitoring
In the stage, radioactive sources lost event happens occasionally, and atomic radiation scientific effects committee of the United Nations (UNSCEAR, 2007) counts, from
During 1960 to 2000 years, there is (orphan) out of control radioactive source personal injury 27 in the whole world altogether, causes 40 people dead, 163 Crinis Carbonisatus
The different degrees of radiation effect of life.There are 332 radiation accidents altogether, wherein radioactive source is lost between 11 years of China 1988-1998
Have an accident therefore account for 80% [1,2].It can be seen that, accelerating and strengthen the management of radioactive source and monitoring is Safe Management when business
Anxious.
Fukushima nuclear accident Japan occurring in 2013, makes people that the fear of core is increasingly deepened, nuclear safety problem is not
Hold and ignore.Accelerate the construction very urgent [3] of radioactive source monitoring network.Radioactive source monitoring network is mainly realized to radioactive source
And carry out real time and on line monitoring about, under radiation source device normal operation, monitor its influence degree to environment；Prominent
Send out in the case of relating to nuclear accident, supervisory systems judges the presence or absence of radioactive source according to live dosage size first, release alarm simultaneously,
Notify Surveillance center, in the case that radioactive source is revealed, the dosage information of the scene of the accident also can be accurately provided in real time, be accident
Emergency processing and floor manager provide accurate foundation.
The pilot of radioactive source monitoring network and establishment are progressively carried out under the effort of all departments, but the group due to this net
Build the face of being related to very big, according to statistics (2004), 140,000 pieces of the existing radioactive source of China, wherein 110,000 pieces radioactive sources are in relating to source unit
Use, 30,000 pieces of radioactive sources are harvested and stored, radioactive source uses number increasing [4,5] with 20% speed every year.In the face of so huge
How the radioactive source of big number, quickly, efficiently accelerate the speed of application of radioactive source monitoring network, be the difficulty being faced at present
Topic.
Further, since the particularity that radioactive source uses (is operated in radioactive source in the labyrinth of thicker mixed pure land building or ground more
The occasions such as lower room；The presence of radioactive source radiation statistics), accurately quickly realize the transmission of dose data around radioactive source very
Difficult.
Content of the invention
For the deficiencies in the prior art, it is an object of the invention to provide a kind of high precision wireless radiation dose monitoring device
And monitoring method, it be a kind of based on technology of Internet of things, using advanced wireless radio-frequency, melting in conjunction with many algorithms
Conjunction technology, by experimental analysiss, develops the wireless radiation source dosage detecting terminal being suitable for complicated occasion.
For achieving the above object, the invention provides following technical scheme：
A kind of high precision wireless radiation dose monitoring device, includes multiple radiation dose probe data harvesters, institute
State radiation dose probe to be connected by wireless network signal between data acquisition unit, described radiation dose probe is connected with
Low energy consumption administration of power supply, described low energy consumption administration of power supply includes X-ray detection X part and the electric charge for providing running voltage
Pump；
Described data acquisition unit is connected with the server of environmental monitoring department by GPRS.
Also include high capacity cell, be connected with described radiation dose probe by wire；
Described X-ray detection X part includes counter tube and scintillation detector, and described counter tube is GM counter tube, includes
Shell, rechargable battery and circuit board, described rechargable battery and circuit board are arranged on described enclosure, are integrated with described circuit board
Data processing module, supply module and communication module, are provided with communication wire on the housing, described communication module with described
Communication wire couples, and described communication wire can receive and send WiFi signal.
As the improvement of the present invention, described wireless network signal is sub-GHz radiofrequency signal.
As a further improvement on the present invention, described X-ray detection X part includes counter tube and scintillation detector.
A kind of high precision wireless radiation dose monitoring method, including having the following steps：
1), radiation dose probe separation is placed on each monitoring point；
2), by radiation dose probe, radiation signal is monitored, and Monitoring Data is sent in the way of wireless signal
To data acquisition unit；
3), data acquisition unit carries out to data calculating analysis, then sends result to the server of environmental monitoring department
In be monitored.
As the concrete technical scheme of the present invention, in step 2, the measurement to radiation signal uses intelligent time tune
Section algorithm.
As a further improvement on the present invention, in step 2, the measurement of radiation signal is used with intelligent PID adjust
Algorithm.
Compared with prior art, it is an advantage of the current invention that：Radioactive source agent is achieved by way of wireless signal is received and dispatched
Amount monitoring separates between detecting terminal, separate, is easy to safeguard and expanded application；By algorithm is adjusted to intelligent time
Adjust the fusion application of algorithm etc. with PID, improve the response speed of measurement, reduce the impact of statistic fluctuation.
Brief description
Fig. 1 is the structural representation of high precision wireless radiation dose monitoring device in the embodiment of the present invention；
Fig. 2 is the internal structure schematic diagram of GM counter tube in the embodiment of the present invention.
Specific embodiment
The embodiment to intelligent emergency acoustic control brake gear in the present invention that sees figures.1.and.2 is described further.
As depicted in figs. 1 and 2, the present embodiment is a kind of high precision wireless radiation dose monitoring device, includes multiple spokes
Penetrate dosage probe 1, multiple radiation dose probes can concentrate on a certain monitoring point it is also possible to be distributed to each monitoring point.
Described radiation dose is popped one's head in by concrete walls 2 and external environment, on the one hand can prevent radiation leakage, an in addition side
Face can prevent the factor of outside from producing interference to probe, affects monitoring result.Concrete walls are provided with and pass in and out for artificial
Lead door 3, staff enter concrete walls in when need to wear protective garment, need to first carry out when walking out concrete walls radiate
Sterilization.
The outside of concrete walls is provided with data acquisition unit 4, logical between described radiation dose probe and data acquisition unit
Cross wireless network signal to connect, here, wireless network signal can select Wi-Fi, Bluetooth, ZigBee and super low-power consumption
The solution of sub-GHz technology.Every kind of solution has pluses and minuses.It is known that radio transmission is inversely proportional to frequency,
In low-power consumption, long haul communication or ability through walls, sub-GHz radio frequency is advantageously.Under complex environment, with 2.4GHz frequency range
The technology such as Bluetooth compare, sub-GHz frequency range spectral interference is less.Disturb less frequency range can improve the entirety of network
Performance, reduces the number of retransmissions in transmission.Consider application scenario and the practical situation of this project, the present embodiment adopts ultralow
The solution of power consumption sub-GHz technology；
Described radiation dose probe is connected with low energy consumption administration of power supply, described low energy consumption administration of power supply includes ray
Exploring block 5 and the charge pump 6 for providing running voltage；
Described data acquisition unit is connected with the server of environmental monitoring department by GPRS.
Described X-ray detection X part includes counter tube 7 and scintillation detector, and described counter tube is GM counter tube, includes
Shell 71, rechargable battery 72 and circuit board 73, described rechargable battery and circuit board are arranged on described enclosure, on described circuit board
It is integrated with data processing module 731, supply module 732 and communication module 733, be provided with communication wire 74 on the housing,
Described communication module is coupled with described communication wire, and described communication wire can receive and send WiFi signal
In view of being applied to system more cannot data acquisition under wiring environment, thus now acquisition node (i.e. sensor ends)
Power supply to be provided by battery, the chronicity run due to field apparatus and the inconvenience changing battery, acquisition node is necessary
There is low-power consumption, with guarantee system can maintain under battery condition of power supply one maintenance the phase normal work.Therefore in design,
Under conditions of meeting system normal data transfer, reduce power consumption, it is to avoid unnecessary energy loss as far as possible.Also can be by selecting
High capacity cell (not shown), is connected with described radiation dose probe by wire.In addition, in sensor design, meter
The X-ray detection X parts such as number pipe, scintillation detector need the running voltage of several hectovolts, and operating current, in microampere order, therefore can be examined
Consider and provide running voltage using charge pump multiplication of voltage mode, reduce system power dissipation.
Described wireless network signal is sub-GHz radiofrequency signal.
Described X-ray detection X part includes the part common on the market such as counter tube and scintillation detector.
A kind of high precision wireless radiation dose monitoring method, including having the following steps：
1), radiation dose probe separation is placed on each monitoring o'clock, is blocked with concrete walls；
2), by radiation dose probe, radiation signal is monitored, and Monitoring Data is sent in the way of wireless signal
To data acquisition unit；
3), data acquisition unit carries out to data calculating analysis, then sends result to the server of environmental monitoring department
In be monitored.
In step 2, the measurement of radiation signal is used with intelligent time and adjusts algorithm.
The details that intelligent time adjusts algorithm is：Due to the presence of statistic fluctuation, to expect and the most accurately measure, only
Could be able to be obtained by infinitely multiple repeated measure.In actual work, it is impossible for will carrying out infinitely multiple measurement
, it is also unnecessary.Typically can only be replaced with the meansigma methodss of finite measurement.Under normal circumstances, we only need to measure list
Average counter in the time of position, i.e. counting rate (unit is to count/point (cpm) or counting/second (cps)).
Assume to have recorded N number of counting, then average counter rate n=N/t within the t time.The measurement of hypothesis time t is accurate
, its measurement error is ignored, then the standard error σ n of average counter rate n is expressed from the next：
Counting rate result can be designated as
From formula (1), time of measuring is longer, and counting rate error is less.
For relative error, then for：
This formula shows, grand total is higher, and relative error is less, and extending time of measuring can make relative error diminish.
Thus analysis understands, the error of counting rate and relative error all have much relations with time of measuring.Surveyed by extending
The amount time can suitably reduce error.
For realizing intelligent regulation, need in the application to find out the membership between counting rate and time of measuring.From formula
(2) in, it will be seen that in a certain range, when measuring accuracy gives (for convenience of calculating, you can to think relatively
Error one timing) we can try to achieve time of measuring according to the counting rate recording, that is,
Understand from formula (3), when degree of accuracy gives, can suitably shorten time of measuring in the case of counting rate height,
Can proper extension time of measuring in the case that counting rate is low.
In step 2, the measurement of radiation signal is adopted can also be that intelligent PID adjusts algorithm.
Described intelligent PID adjusts algorithm：By above-mentioned analysis, it is known that the presence of statistical error is inevitable,
Cannot be completely eliminated.Extend time of measuring and actually exchange certain certainty of measurement for using the sensitivity of measurement.In order to not
Sacrifice too many sensitivity and ensure certain certainty of measurement again, therefore, it is proposed that intelligent PID adjusts algorithm.
It is assumed that this measurement gained counting rate is x (i), last computation gained counting rate is y (i-1), then have：
E (i)=x (i)-y (i-1) (4)
D (i)=E (i)-E (i-1) (5)
Wherein, E (i) is the difference of measured value and actual value, and D (i) is the change of difference twice.
Thus we can calculate this counting rate and are：
Y (i)=y (i-1)+KpE(i)+KiD(i) (6)
Wherein, Kp is scale factor, and Ki is integrating factor.
In actual applications, we take the mode that two kinds of algorithms combine.So both can ensure the degree of accuracy measuring, and not
Failure sensitivity.
The above makes the preferred embodiment of the present invention, for the person of ordinary skill of the art without departing from this
On the premise of bright principle, some modifications and improvement can also be made, these also should be regarded as protection scope of the present invention.
Claims (6)
1. a kind of high precision wireless radiation dose monitoring device, includes multiple radiation dose probe data harvesters, it is special
Levy and be：
Described radiation dose probe is connected by wireless network signal between data acquisition unit, on described radiation dose probe
It is connected with low energy consumption administration of power supply, described low energy consumption administration of power supply includes X-ray detection X part and for providing running voltage
Charge pump；
Described data acquisition unit is connected with the server of environmental monitoring department by GPRS.
Also include high capacity cell, be connected with described radiation dose probe by wire；
Described X-ray detection X part includes counter tube and scintillation detector, described counter tube be GM counter tube, include shell,
Rechargable battery and circuit board, described rechargable battery and circuit board are arranged on described enclosure, are integrated with data on described circuit board
Processing module, supply module and communication module, are provided with communication wire on the housing, described communication module and described communication
Electric wire couples, and described communication wire can receive and send WiFi signal.
2. high precision wireless radiation dose monitoring device according to claim 1 it is characterised in that：Described wireless network letter
Number be sub-GHz radiofrequency signal.
3. high precision wireless radiation dose monitoring device according to claim 1 it is characterised in that：Described shell is aluminum
Shell or PVC shell.
4. a kind of high precision wireless radiation dose monitoring method, including having the following steps：
1), radiation dose probe separation is placed on each monitoring point；
2), by radiation dose probe, radiation signal is monitored, and Monitoring Data is sent to number in the way of wireless signal
According in harvester；
3), data acquisition unit carries out to data calculating analysis, then sends to enter to the server of environmental monitoring department by result
Row monitoring.
5. high precision wireless radiation dose monitoring method according to claim 4 it is characterised in that：In step 2, to spoke
The measurement penetrating signal uses intelligent time regulation algorithm.
6. high precision wireless radiation dose monitoring method according to claim 4 it is characterised in that：In step 2, to spoke
The measurement penetrating signal uses intelligent PID regulation algorithm.
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Cited By (3)
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| CN109991642A (en) * | 2019-04-16 | 2019-07-09 | 重庆建安仪器有限责任公司 | A kind of Dose rate measurement device and underwater Dose rate measurement system |
| CN112764083A (en) * | 2020-12-22 | 2021-05-07 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Industrial radioactive source on-line monitoring system |
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| CN112764083A (en) * | 2020-12-22 | 2021-05-07 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Industrial radioactive source on-line monitoring system |
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