CN106950589B - A kind of device for being detected to radioactive ray - Google Patents
A kind of device for being detected to radioactive ray Download PDFInfo
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- CN106950589B CN106950589B CN201710201253.9A CN201710201253A CN106950589B CN 106950589 B CN106950589 B CN 106950589B CN 201710201253 A CN201710201253 A CN 201710201253A CN 106950589 B CN106950589 B CN 106950589B
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- 230000002285 radioactive effect Effects 0.000 title claims abstract description 16
- 230000005855 radiation Effects 0.000 claims abstract description 60
- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 239000007787 solid Substances 0.000 claims abstract description 9
- 238000012360 testing method Methods 0.000 claims abstract description 8
- 231100000673 dose–response relationship Toxicity 0.000 claims abstract description 5
- 238000005316 response function Methods 0.000 claims abstract description 5
- 230000015572 biosynthetic process Effects 0.000 claims abstract 2
- 238000005259 measurement Methods 0.000 abstract description 6
- 238000001514 detection method Methods 0.000 description 7
- 230000006870 function Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 235000008429 bread Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000013178 mathematical model Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 238000005025 nuclear technology Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/29—Measurement performed on radiation beams, e.g. position or section of the beam; Measurement of spatial distribution of radiation
- G01T1/2914—Measurement of spatial distribution of radiation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/29—Measurement performed on radiation beams, e.g. position or section of the beam; Measurement of spatial distribution of radiation
- G01T1/2914—Measurement of spatial distribution of radiation
- G01T1/2964—Scanners
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Molecular Biology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Measurement Of Radiation (AREA)
Abstract
The invention discloses a kind of devices for being detected to radioactive ray, including several radiation detectors, the radiation detector is in turn connected to form arcuate structure, shield is cased with outside arcuate structure, and all radiation detectors are wrapped in shield, outside wall surface on shield positioned at arcuate structure offers entrance window, and shield is connected with rotation system, and radiation detector formation arcuate structure can be as rotation system be around the axis rotation of rotation system.The present invention uses array structure, can disposably measure the dosage distribution of 180 ° of cambered surface ranges, shorten the time of dosage rink corner distribution measuring, improve measurement efficiency；The dose response function measurement that can fast implement 4 π solid angle of test point is driven by rotating mechanism, compensates for the blank of the prior art；Due to the foundation of 4 π solid angle dosage fields, the source direction of radiographic source can be parsed by mathematical modeling, solve the problems, such as that the prior art can not quickly position radiographic source direction.
Description
Technical field
The present invention relates to a kind of radioactivity monitoring technologies, and in particular to a kind of dress for being detected to radioactive ray
It sets.
Background technique
In radioactivity monitoring, radiation detector can measure the related letter such as dose of radiation of measured point under normal conditions
Breath, but the source direction of emergent ray can not be given, and then need to find the source direction of radiographic source in some special circumstances.
In general, the radiation detector that existing monitor is equipped with only is equipped with one and carries out radiometric radiation detector, so
And in actinometry for the purpose of radioactivity monitoring field is searched by radiographic source, this single radiation detecting cell due to
Certain point combined radiation dose profile can only once be measured, when radiographic source uncertain in face of position then cannot achieve fast searching
With positioning radiographic source, time-consuming for search, be easy to cause reseaching staff big by radiation risk, poor to radioactive source stationkeeping ability.
Summary of the invention
The technical problem to be solved by the present invention is to the detection devices used in radioactivity monitoring field to have a single function, cannot
To the uncertain radiographic source in position carry out search with position radiographic source, its purpose is to provide one kind for radioactive ray into
The device of row detection, the present apparatus mainly pass through the pivoting for establishing arc radiation detector array, realize in 4 π solid
The radioactive intensity of angular region measures, so as to the fast resolving emergent ray source side by way of pre-establishing mathematical model
To.
The present invention is achieved through the following technical solutions:
A kind of device for being detected to radioactive ray, including several radiation detectors, the radiation detection
Device is in turn connected to form arcuate structure, shield is cased with outside arcuate structure, and all radiation detectors are wrapped in shielding
In body, the outside wall surface on shield positioned at arcuate structure offers entrance window, and shield is connected with rotation system, and radiation detection
Device forms arcuate structure can be as rotation system be around the axis rotation of rotation system.It is related for dose of radiation etc. at present to believe
The measurement of breath is highly developed technology, can measure these information by single radiation detector, but can not
To the source direction of emergent ray, and then need to find the source direction of radiographic source in some special circumstances, especially nuclear power is led
Domain, the radioactive risk of generation is big, needs to find the source direction of radiographic source in time, carries out coping with treatment measures accordingly,
In general, the radiation detector that existing monitor is equipped with only is equipped with one and carries out radiometric radiation detector,
Multiple radiation detectors may be configured, but this configuration is provided to obtain the relevant informations such as dose of radiation, and configures
The effect that mode obtains is also unobvious, and can not search radiation source.However, actinometry for the purpose of being searched by radiographic source
In, this single radiation detecting cell is not true in face of position due to can only once measure certain point combined radiation dose profile
It then cannot achieve fast searching and positioning radiographic source when fixed radiographic source, while time-consuming for this detector its search, will search for
Personnel's prolonged stay be easy to cause reseaching staff big by radiation risk in radiation areas, poor to radioactive source stationkeeping ability.And this
The device of conceptual design, multiple radiation detectors are mounted in the shield of arc, remove radiation detector entrance window direction
It does not set outside shield, other directions are equipped with shield, wrap up in situation in three bread, i.e., can only carry out radioactivity by entrance window and penetrate
The reception of line, convenient for making differentiation to radioactive ray source direction.Each radiation detector of arc-shaped array-like arrangement includes
Independent circuit measuring unit and radiation-sensitive element can independently export electric signal relevant to dose of radiation after energization, lead to
Connector is crossed to be fixed in arc-shaped shield.Shield both ends are connect with the shaft in rotation system, and shaft is vertically fixed
On rotating mechanism, shaft can rotate 360 ° under the drive of rotating mechanism, and rotating mechanism has position fan-out capability, can be with
The angle information real-time Transmission passed through when device is rotated is gone out, to realize fast in conjunction with the mode for pre-establishing mathematical model
Speed identifies that accurate positioning improves search efficiency to radiographic source, reduces search in radiation environment by radiation risk.
When actually being detected, the cambered surface of arcuate structure is preferably designed as 180 °, it can be in test point axial one
The secondary dosage distribution that can measure 180 ° of direction points, that is, complete the measurement in a face, then fit through rotating mechanism and revolve around axis
Turn 360 ° to set up the dose response function about 4 π solid angle of test point, i.e., will not waste the arrangement of radiation detector, ties
Rotating function is closed, the detection for radioactive source is also comprehensive, realization accurate positioning, raising search efficiency.
With the development of China's Application of Nuclear Technology industry, various Isotope Devices or product are continuously emerged in the daily of people
In life, country is also increasingly strict to the supervision of radioactive source.Relevant activity can be well controlled under normal conditions, but
It is under conditions of some special, it may occur that origin of radioactivity is unknown, needs quickly to position what ray source was disposed in time
Situation, existing equipment are not able to satisfy the demand of quickly positioning radiographic source due to the limitation of its structure, function.The hair of the present apparatus
It is bright, the related deficiency for searching equipment is not only compensated for, while help can also be provided in terms of core security and material searches, developed
It has a high potential.
Compared with prior art, the present invention having the following advantages and benefits:
1, using array structure, the dosage distribution of 180 ° of cambered surface ranges can be disposably measured, dosage rink corner is shortened
The time of distribution measuring, improve measurement efficiency；
2, it drives the dose response function that can fast implement 4 π solid angle of test point to measure by rotating mechanism, compensates for existing
There is the blank of technology；
3, due to the foundation of 4 π solid angle dosage fields, the source direction of radiographic source can be parsed by mathematical modeling, solved
The prior art of having determined can not quickly position the problem of radiographic source direction.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is schematic structural view of the invention；
Fig. 2 is side sectional view of the invention.
Label and corresponding parts title in attached drawing:
1- shaft, 2- radiation detector, 3- shield, 4- rotating mechanism.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below with reference to embodiment and attached drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation for explaining only the invention, are not made
For limitation of the invention.
Embodiment:
As shown in Figure 1 and Figure 2, a kind of device for being detected to radioactive ray, including several radiation detectors
2, the radiation detector 2 is in turn connected to form the arcuate structure that radian is 180 °, naturally it is also possible to form the arc of other radians
Shape structure, for stereochemical structure, 180 ° of radian is capable of forming the more complete region of a covering surface in rotation,
When carrying out 360 ° of rotations, the region of rotation covering is spherical surface.Shield 3, and all radiation are cased with outside arcuate structure
Detector 2 is wrapped in shield 3, offers entrance window positioned at the outside wall surface of arcuate structure on shield 3, i.e., detection remove into
It penetrates outside window, other directions are wrapped up detector when entering detector from different directions to avoid ray by shielding material and detected
The signal magnitude arrived, to prevent disturbing factor；Detector array is fixed on one and passes through rotating machine with position output function
On structure, shaft 1 is vertically fixed on rotating mechanism 4 and can be under the drive of rotating mechanism 4 around own axis, shield
Both ends fixed with 1 outer wall of shaft, and radiation detector 2 formed arcuate structure can be rotated with shaft 1.It can be by turning
The dose of radiation field distribution of all directions in 4 π spatial angle range of test point is measured in the pivoting of motivation structure.
It has the ability rotated around 360 ° of specific axis with the radiation detector 2 of arcuate structure, can be in a test point
The Radiation Dose Field panorama of 4 π solid angles is set up rapidly, to provide measurement data to establish ray source direction, then is passed through
The mathematical modeling carried out in advance can accurately parse the source direction of radiographic source, and this mathematical modeling is for art technology
Personnel are to be fully able to realize in advance.
Each radiation detector 2 includes independent circuit measuring unit and sensor.Radiation detector can be half
Conductor type, compound semiconductor, scintillator+semi-conductor type etc..These are all existing structures, really visit all radiation
It surveys after device 2 is wrapped in shield 3 and is connect with the same receiver, rotating mechanism, which is removed, has driven rotation for connecting shaft
Outside, also there is rotational angle real time information feedback function, such as encoder is installed.
Shaft 1 and shield 3 are in rigid connection, and shaft 1 is fixed on rotating mechanism 4, when rotating mechanism 4 rotates, just
The radiation detector 2 that shield 3 can be driven and be installed on shield 3 rotates together.Radiation detector 2 can will be in space
Ionising radiation signal be converted into electric signal output, radiation detector 2 is installed in shield 3, since shield 3 is designed to three
Bread wraps up in situation, and only there are 2 entrance window directions of radiation detector not to set shielding, therefore with the rotation of shield 3, radiation detection
Device 2 is in ray incident direction --- the signal that the radial signal strength exported the signal not shielded to will be greater than increasing shielding.
Rotating mechanism 4 is provided with location information output module, such as position coder, by each signal of detector array and position coder
Information matches are got up, so that it may 4 π solid angle dose response function of test point are obtained, so as to judge emergent ray incident direction.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (2)
1. a kind of device for being detected to radioactive ray, including several radiation detectors (2), which is characterized in that
The radiation detector (2) is in turn connected to form arcuate structure, is cased with outside arcuate structure shield (3), and all radiation
Detector (2) is wrapped in shield (3), and the outside wall surface on shield (3) positioned at arcuate structure offers entrance window, is shielded
Body (3) is connected with rotation system, and radiation detector (2) formation arcuate structure can be as rotation system be around rotation system
Axis rotation；Each radiation detector (2) is independent defeated after energization including independent circuit measuring unit and radiation-sensitive element
Electric signal relevant to dose of radiation out；
The rotation system includes rotating mechanism (4) and shaft (1), and shaft (1) is vertically fixed on rotating mechanism (4) and can
In the case where rotating mechanism (4) drive around own axis, the both ends of shield are fixed with shaft (1) outer wall；
Rotating mechanism (4) is provided with position coder, by by the electric signal of circuit measuring unit and radiation-sensitive element and position
The information for setting encoder is matched, and obtains 4 π solid angle dose response function of test point, then judge emergent ray incident direction.
2. a kind of device for being detected to radioactive ray according to claim 1, which is characterized in that the arc
The cambered surface of shape structure is 180 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710201253.9A CN106950589B (en) | 2017-03-30 | 2017-03-30 | A kind of device for being detected to radioactive ray |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710201253.9A CN106950589B (en) | 2017-03-30 | 2017-03-30 | A kind of device for being detected to radioactive ray |
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| Publication Number | Publication Date |
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| CN106950589A CN106950589A (en) | 2017-07-14 |
| CN106950589B true CN106950589B (en) | 2019-09-06 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108363091B (en) * | 2018-01-16 | 2020-03-03 | 北京科技大学 | 4 pi panoramic radioactive source positioning system and method |
| CN109143306B (en) * | 2018-07-10 | 2022-08-02 | 上海大学 | Nuclear radiation field imaging device based on cadmium zinc telluride array |
| CN109212578A (en) * | 2018-09-06 | 2019-01-15 | 付学智 | A kind of radiation detector, radiation detection method and computer storage medium |
| CN109828299B (en) * | 2019-03-19 | 2023-11-24 | 山东大学 | A gamma-ray dose rate angle positioning device and method |
| CN110794443B (en) * | 2019-10-23 | 2021-03-23 | 西安交通大学 | A detector device and positioning method for quickly and accurately positioning a radioactive source |
| CN112259275B (en) * | 2020-10-19 | 2022-02-11 | 中国核动力研究设计院 | Communication system and communication method under electromagnetic shielding environment |
| CN115469352A (en) * | 2022-09-05 | 2022-12-13 | Imd（北京）医疗器械有限公司 | Detection device for leakage radiation of X-ray source and application method thereof |
| CN115508881A (en) * | 2022-10-13 | 2022-12-23 | 北京合鲸科技发展有限公司 | Linear array type array neutron detection positioning device and positioning method |
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| CN1039160C (en) * | 1995-06-16 | 1998-07-15 | 北京清大电子仪器联合公司 | Small sensible weight and high precision belt nuclear balance |
| US7515681B2 (en) * | 2004-06-30 | 2009-04-07 | Lexitek, Inc. | High resolution proton beam monitor |
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| CN101907721A (en) * | 2010-07-19 | 2010-12-08 | 深圳市海博科技有限公司 | Measurement phantom |
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|---|---|---|---|---|
| CN1197209A (en) * | 1998-04-03 | 1998-10-28 | 清华大学 | Vehicle-mounted γ-ray digital radiation imaging mobile detection station and its array detection device |
| CN1633608A (en) * | 2002-02-15 | 2005-06-29 | 爱克斯康特公司 | Apparatus and method for detecting ionizing radiation using a rotating detector array |
| CN101833106A (en) * | 2010-05-11 | 2010-09-15 | 刘继国 | Scintillation detector for measuring ray position and energy |
| CN104991267A (en) * | 2015-07-28 | 2015-10-21 | 济南中威仪器有限公司 | Position indicator used for searching lost radioactive source |
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