CN106950589A - A kind of device for being detected to radioactive ray - Google Patents
A kind of device for being detected to radioactive ray Download PDFInfo
- Publication number
- CN106950589A CN106950589A CN201710201253.9A CN201710201253A CN106950589A CN 106950589 A CN106950589 A CN 106950589A CN 201710201253 A CN201710201253 A CN 201710201253A CN 106950589 A CN106950589 A CN 106950589A
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- shield
- arcuate structure
- radiation
- rotation system
- radiation detector
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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
- G01T1/29—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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- 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 device 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 the axis that radiation detector formation arcuate structure can be with rotation system around rotation system is rotated.The present invention uses array structure, can disposably measure the dosage distribution of 180 ° of cambered surface scopes, shorten the time of dosage rink corner distribution measuring, improve measurement efficiency；Drive the dose response function that can quickly realize the π solid angles of test point 4 to measure by rotating mechanism, compensate for the blank of 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, the problem of prior art can not quickly position radiographic source direction is solved.
Description
Technical field
The present invention relates to a kind of radioactivity monitoring technology, and in particular to a kind of dress for being detected to radioactive ray
Put.
Background technology
In radioactivity monitoring, radiation detector can measure the correlation letter such as dose of radiation of measured point under normal circumstances
Breath, but the source direction of emergent ray can not be given, and the source direction in particular cases then needing to find radiographic source at some.
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 the actinometry for the purpose of being searched in radioactivity monitoring field by radiographic source, this single radiation detecting cell due to
Certain point combined radiation dose profile can only be once measured, fast searching can not be then realized during radiographic source uncertain in face of position
With positioning radiographic source, it is searched for, and time-consuming, and it is big by radiation risk to easily cause reseaching staff, poor to radioactive source stationkeeping ability.
The content of the invention
The technical problems to be solved by the invention are the detection device unitary functions used in radioactivity monitoring field, it is impossible to
Enter line search and positioning radiographic source to the uncertain radiographic source in position, it is a kind of for entering to radioactive ray its object is to provide
The device of row detection, the present apparatus is realized three-dimensional in 4 π mainly by a pivoting for setting up arc radiation detector array
The radioactive intensity measurement of angular region, so as to the fast resolving emergent ray source side by way of pre-establishing Mathematical Modeling
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, and 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 formation arcuate structure can be as rotation system be around the axis rotation of rotation system.Believe at present for the correlation such as dose of radiation
The measurement of breath is highly developed technology, and it can just measure these information by single radiation detector, but can not
To the source direction of emergent ray, and the source direction in particular cases then needing to find radiographic source at some, especially nuclear power are led
Domain, it produces radioactive risk greatly, it is necessary to find the source direction of radiographic source in time, and progress is corresponding to tackle treatment measures,
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 configuration
The effect that mode is obtained is not also obvious, and can not search radiation source.However, the 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
Fast searching and positioning radiographic source can not be then realized during fixed radiographic source, while time-consuming for this detector its search, will be searched for
Personnel's prolonged stay is in radiation areas, and it is big by radiation risk to easily cause reseaching staff, poor to radioactive source stationkeeping ability.And this
The device of conceptual design, multiple radiation detectors are arranged in the shield of arc by it, except radiation detector entrance window direction
Do not set shielding external, other directions are equipped with shield, and situation is wrapped up in three bread, i.e., can only carry out radioactivity by entrance window penetrates
The reception of line, is easy to make differentiation to radioactive ray source direction.Each radiation detector of curved array-like arrangement includes
Independent circuit measuring unit and radiation-sensitive element, can independently export the electric signal related to dose of radiation after energization, lead to
Connector is crossed to be fixed in curved shield.Shield two ends are connected with the rotating shaft in rotation system, and rotating shaft is vertically fixed
On rotating mechanism, rotating 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, so as to realize fast with reference to the mode for pre-establishing Mathematical Modeling
Radiographic source is identified speed, accurate positioning, improves search efficiency, 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 direction one
It is secondary to measure the dosage distribution of 180 ° of direction points, that is, the measurement in a face is completed, then fit through rotating mechanism around axle rotation
Turn 360 ° so as to set up the dose response function on the π solid angles of test point 4, i.e., will not waste the arrangement of radiation detector, tie
Rotating function is closed, the detection for radioactive source is also comprehensive, realize accurate positioning, improve 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, supervision of the country to radioactive source is also increasingly strict.Related activity can be well controlled under normal circumstances, but
It is under conditions of some are special, it may occur that origin of radioactivity is not clear, need what quick positioning ray source was disposed in time
Situation, existing equipment is due to the limitation of its structure, function, it is impossible to meet the demand of quick positioning radiographic source.The hair of the present apparatus
It is bright, the deficiency of related search equipment is not only compensate for, while help can also be provided in terms of core security and material searches, is developed
Have a high potential.
The present invention compared with prior art, has the following advantages and advantages：
1st, using array structure, the dosage distribution of 180 ° of cambered surface scopes can be disposably measured, dosage rink corner is shortened
The time of distribution measuring, improve measurement efficiency；
2nd, drive the dose response function that can quickly realize the π solid angles of test point 4 to measure by rotating mechanism, compensate for existing
There is the blank of technology；
3rd, due to the foundation of 4 π solid angle dosage fields, the source direction of radiographic source can be parsed by mathematical modeling, is solved
The problem of prior art of having determined can not quickly position radiographic source direction.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding 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.
Mark and corresponding parts title in accompanying drawing：
1- rotating shafts, 2- radiation detectors, 3- shields, 4- rotating mechanisms.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, with reference to embodiment and accompanying drawing, to this
Invention is described in further detail, and exemplary embodiment and its explanation of the invention is only used for explaining the present invention, does not make
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 can form a coverage rate more complete region when rotating,
When carrying out 360 ° of rotations, its region for rotating covering is sphere.Shield 3, and all radiation are cased with outside arcuate structure
Detector 2 is wrapped in shield 3, and entrance window is offered positioned at the outside wall surface of arcuate structure on shield 3, i.e., detection remove into
Penetrate outside window, other directions are wrapped up avoiding ray from being detected into detector during detector from different directions by shielding material
The signal magnitude arrived, so as to prevent disturbing factor；Detector array is fixed on one with position output function by rotating machine
On structure, rotating shaft 1 is vertically fixed on rotating mechanism 4 and can be under the drive of rotating mechanism 4 around own axis, shield
Two ends fixed with the outer wall of rotating shaft 1, and radiation detector 2 formation arcuate structure can be rotated with rotating shaft 1.Can be by turning
The dose of radiation field distribution of all directions in the π spatial angle ranges of test point 4 is measured in the pivoting of motivation structure.
It possesses ability around the rotation of 360 ° of specific axis with the radiation detector 2 of arcuate structure, can be in a test point
The rapid Radiation Dose Field panorama for setting up 4 π solid angles, so as to provide measurement data to establish ray source direction, then passes through
The mathematical modeling carried out in advance, can accurately parse the source direction of radiographic source, 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
Survey after device 2 is wrapped in shield 3 and be connected with same receiver, rotating mechanism removes and driven rotation for connection rotating shaft
Outside, encoder is such as also installed with rotational angle real time information feedback function.
Rotating shaft 1 is in rigid connection with shield 3, and rotating shaft 1 is fixed on rotating mechanism 4, when rotating mechanism 4 is rotated, just
The radiation detector 2 that shield 3 can be driven and be installed on shield 3 is rotated together.Radiation detector 2 can be by space
Ionising radiation signal be converted into electric signal output, radiation detector 2 is installed in shield 3, because shield 3 is designed to three
Bread wraps up in situation, only leaves the entrance window direction of radiation detector 2 and does not set shielding, therefore with the rotation of shield 3, radiation detection
Device 2 is in ray incident direction --- the signal that the signal intensity radially exported there is not the signal of shielding to will be greater than adding shielding.
Rotating mechanism 4 is provided with positional information output module, such as position coder, by each signal of detector array and position coder
Information matches are got up, it is possible to the π solid angle dose response functions of test point 4 are obtained, so as to judge emergent ray incident direction.
Above-described embodiment, has been carried out further to the purpose of the present invention, technical scheme and beneficial effect
Describe in detail, should be understood that the embodiment that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, within the spirit and principles of the invention, any modifications, equivalent substitutions and improvements done etc. all should be included
Within protection scope of the present invention.
Claims (3)
1. a kind of device for being detected to radioactive ray, including several radiation detectors (2), it is characterised in that
The radiation detector (2) is in turn connected to form arcuate structure, and shield (3), and all radiation are cased with outside arcuate structure
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 is rotated.
2. a kind of device for being detected to radioactive ray according to claim 1, it is characterised in that described turn
Dynamic system includes rotating mechanism (4) and rotating shaft (1), and rotating shaft (1) is vertically fixed on rotating mechanism (4) and can be in rotating mechanism
(4) fixed under driving around own axis, the two ends of shield with rotating shaft (1) outer wall.
3. a kind of device for being detected to radioactive ray according to claim 1 or 2, it is characterised in that institute
The cambered surface for stating arcuate 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 |
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| 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 true CN106950589A (en) | 2017-07-14 |
| CN106950589B CN106950589B (en) | 2019-09-06 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108363091A (en) * | 2018-01-16 | 2018-08-03 | 北京科技大学 | 4 π panorama radioactive source positioning systems and method |
| CN109143306A (en) * | 2018-07-10 | 2019-01-04 | 上海大学 | Nuclear radiation field imaging device based on cadmium-zinc-teiluride array |
| CN109212578A (en) * | 2018-09-06 | 2019-01-15 | 付学智 | A kind of radiation detector, radiation detection method and computer storage medium |
| CN109828299A (en) * | 2019-03-19 | 2019-05-31 | 山东大学 | A kind of gamma-rays dosage rate angle positioning device and method |
| CN110794443A (en) * | 2019-10-23 | 2020-02-14 | 西安交通大学 | Detector device for quickly and accurately positioning radioactive source and positioning method |
| CN112259275A (en) * | 2020-10-19 | 2021-01-22 | 中国核动力研究设计院 | Communication system and communication method under electromagnetic shielding environment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112259275A (en) * | 2020-10-19 | 2021-01-22 | 中国核动力研究设计院 | Communication system and communication method under electromagnetic shielding environment |
| 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 |
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| CN106950589B (en) | 2019-09-06 |
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