CN210323386U - Ray monitor - Google Patents
Ray monitor Download PDFInfo
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- CN210323386U CN210323386U CN201921092135.XU CN201921092135U CN210323386U CN 210323386 U CN210323386 U CN 210323386U CN 201921092135 U CN201921092135 U CN 201921092135U CN 210323386 U CN210323386 U CN 210323386U
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Abstract
The utility model discloses a ray monitor, including radiation sensor and monitor organism, radiation sensor sets up on the monitor organism, and the radiation sensor upper shield is equipped with the attenuator, the attenuator rotates and sets up on the monitor organism, is equipped with the opening that the radiation source of being convenient for passes through on the attenuator.
Description
Technical Field
The utility model relates to a measuring tool field, concretely relates to ray monitor.
Background
Uncontrolled nuclear materials can create very serious risks at the kilogram level, and foreign countries divide special nuclear materials into strategic, sub-strategic and low-strategic special nuclear materials, so that each special nuclear material can possibly pose a potential threat to the people and governments all over the world, and the detection and monitoring of the easily portable special nuclear materials are very important.
Conventional radiation detectors can detect radioactive materials, but are limited to the presence of radioactive materials, which are difficult to accurately locate and trace.
SUMMERY OF THE UTILITY MODEL
The utility model provides a can initiatively survey radioactive radiation, can reach the real-time supervision effect to can fix a position radioactive radiation source's position and survey its radiation intensity information's ray monitoring ware.
In order to achieve the above object, the utility model adopts the following technical scheme:
the utility model provides a ray monitor, includes radiation sensor and monitor organism, radiation sensor sets up on the monitor organism, and the radiation sensor upper shield is equipped with the attenuator, the attenuator rotates and sets up on the monitor organism, is equipped with the opening that the radiation source of being convenient for passes through on the attenuator.
Further, the attenuator is rotationally arranged on the monitor body through a rotating mechanism.
Further, the rotating mechanism is a servo motor.
Further, the opening on the attenuator is a diaphragm slit parallel to the rotation axis of the attenuator.
Furthermore, a protective cover is covered on the monitor body.
Furthermore, a photoelectric sensor is connected to the radiation sensor, and the photoelectric sensor is connected with a control system in the machine body. A photoelectric sensor: ArrayC-60035-64P-PCB.
Further, the control system includes:
the signal processing module: processing the pulse signal from the photosensor;
a power supply module: providing power supply for the control system, the rotating mechanism and the photoelectric sensor;
a rotation control module: controlling the rotation direction and the rotation speed of the attenuator, and recording the angle information corresponding to the rotation speed and the spatial position in real time;
a data communication module: transmitting data to the outside in a wireless or wired mode;
the signal processing module is connected with the photoelectric sensor, the signal processing module is connected with the data communication module, the rotation control module and the power supply module are respectively connected with the data communication module, and the rotation control module is connected with the rotating mechanism to control rotation of the attenuator.
Further, the data communication module includes:
a geographic information module: recording the coordinates of the position of the tracer;
a position reconstruction module: matching the angle information of the rotating position with the signal information of the photoelectric sensor to determine the correlation degree of the radiation signal and the spatial angle direction;
a data storage module: storing, exchanging and processing data information of the sensor;
a central processing unit: processing data information;
the signal input and output module: receiving and outputting signals and data;
the geographic information module, the position reconstruction module, the data storage module and the signal input and output module are respectively connected with the central processing unit.
The utility model has the advantages that:
1. the attenuator with the open diaphragm slit is driven by the rotating device to rotate, and the rotating diaphragm slit can realize the omnibearing real-time monitoring of the surrounding radioactive radiation;
2. through the work of the rotary attenuator, the radioactive radiation source in the space range detectable by the diaphragm around the monitor can be found, so that the existence of the radioactive radiation source can be monitored;
3. the relative position of the radiation source can be determined by the cooperative work of the two attenuators and the radiation source by utilizing the triangular geometric relationship, and the accurate positioning of the radioactive radiation source is realized after the relative position is combined with the geographic information;
4. by changing the detector elements in the attenuator, radioactivity measurement of neutrons, gamma, beta and the like can be realized.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of example 2;
FIG. 3 is a schematic diagram of a sensor configuration;
FIG. 4 is a schematic diagram of the operation of the sensor;
FIG. 5 is a positioning schematic;
FIG. 6 is a schematic diagram of three-dimensional positioning;
FIG. 7 is a schematic diagram of a three-dimensional positioning profile;
FIG. 8 is a block diagram of a control system;
fig. 9 is a schematic diagram of module connection for data communication.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and various changes may be made apparent to those skilled in the art within the spirit and scope of the present invention as defined and defined by the appended claims.
Example 1
As shown in fig. 1 and 3, the radiation monitor includes a radiation sensor 2 and a monitor body 1, the radiation sensor 2 is disposed on the monitor body 1, an attenuator 3 is covered on the radiation sensor 2, the attenuator 3 is rotatably disposed on the monitor body 1, and an opening for allowing a radiation source to pass through is disposed on the attenuator 3.
The attenuator 3 shields various radiation from the radiation source and reduces the proportion of the ambient radiation background. The radiation pulses are detected only when the radiation emitted by the radiation source is directly incident on the radiation sensor 2 via the diaphragm slit 4, and the intensity of the radiation is reduced to a level corresponding to the background of the environment after the radiation passes through the outer wall and enters the attenuator 3, so that the sensitivity of the detector is improved. The attenuator 3 is preferably fabricated from a high density material (e.g., Pb, W, etc.) that has a high stopping power for the gamma-ray source.
Neutrons with similar energies have a greater penetration than gamma rays, and the shielding of neutron sources is quite different from that of gamma rays. The low Z material has a smaller electron cloud and smaller distance between nuclei compared to the high Z material, thereby increasing the probability of an incident neutron interacting with it. Meanwhile, the mass of the low-Z nucleus is close to that of the neutron, the energy transferred by the neutron in each collision is more, and the moderating effect is better. Therefore, for shielding the neutron source, the attenuator 3 needs to utilize a high density low Z material to slow and thermalize fast neutrons, thereby increasing detection efficiency.
The gamma ray sensor usually adopts a crystal with high detection efficiency, high light output and good mechanical property, and can also adopt scintillators sensitive to neutron gamma, such as CLYC, CLLB and NaI:6li; neutron sensors may employ sensors sensitive to neutrons, e.g.3He and containing6Li、35Crystals of Cl.
Example 2
In the present embodiment, the attenuator 3 is rotatably disposed on the monitor body 1 by the rotating mechanism 5, and the opening of the attenuator 3 is a diaphragm slit 4 parallel to the rotation axis of the attenuator 3. The width of the diaphragm slit 4 can be set according to needs, the width adjusting range can be 2 mm-50 mm generally, and when the width is wider (20-50 mm), the diaphragm slit can be used for quickly detecting radiation, so that the radiation monitoring efficiency is improved; when the width is narrow (2-20 mm), the radiation monitoring device can be used for accurately positioning radiation, and radiation monitoring precision is improved. In operation the attenuator 3 is in a rotated state, when the radiation enters the attenuator 3 through the diaphragm slit 4 and is detected by the radiation sensor 2, the diaphragm slit 4 is now positioned to point towards the radiation source.
As shown in fig. 4, the abscissa is the angle of rotation of the diaphragm slit 4 and the ordinate is the intensity of the radiation pulse, and when the diaphragm slit 4 is directed towards the radiation source and the radiation sensor 2 detects a larger radiation pulse, the angle of the diaphragm slit 4 is the direction of the radiation source.
And the direction of the radiation source can be detected for many times through the continuous rotation of the attenuator 3, thereby reflecting the change of the position of the radiation source. Whether the radiation source is in a stationary or moving state can be determined from each change in the angle at which the diaphragm slit 4 is directed towards the radiation source.
Meanwhile, the radiation source is scanned at different positions by changing the position of the ray monitor, two cone angles containing the source are determined by scanning, and the intersecting position of the two cone angles is the position of the radiation source.
Example 3
As shown in fig. 2, the rotating mechanism 5 is a servo motor 7. The servo motor 7 is fixed on the monitor body 1 and connected with the attenuator 3 to drive the attenuator 3 to rotate. The minimum adjustable angle of the servo motor 7 is less than or equal to 1 degree, and the smaller adjustable angle can enable the positioning pointing to be more accurate. The minimum rotating speed is 1rpm, the adjusting range of the rotating speed is 1 rpm-100 rpm per minute, the high rotating speed is convenient for scanning for many times, and therefore positioning is carried out, and the low rotating speed enables the pointing direction of the diaphragm slit 4 to be more accurate. The servo motor 7 is controlled by the rotation control module to rotate, the rotation control module receives the information of the data communication module to control the rotation angle of the servo motor 7, and finally the rotation angle of the diaphragm slit 4 is determined.
Example 4
In this embodiment, the monitor body 1 is covered with a protective cover 6 to prevent dust from entering. Meanwhile, the protective cover 6 can be used for protecting the attenuator and the radiation sensor, and is made of a low-Z light material.
Example 5
The radiation sensor 2 is also connected with a photoelectric sensor, the photoelectric sensor is triggered to generate a signal after the radiation sensor 2 senses a radiation source, and the photoelectric sensor is connected with a control system in the machine body 1.
The control system includes:
the signal processing module: processing the pulse signal from the photosensor;
a power supply module: providing power to the control system and the rotating mechanism;
a rotation control module: controlling the rotation, the rotating speed and the rotating direction of the rotating mechanism, and recording angle information in fact;
a data communication module: transmitting data to the outside in a wireless or wired mode;
the signal processing module is connected with the photoelectric sensor, the signal processing module is connected with the data communication module, the rotation control module and the power supply module are respectively connected with the data communication module, and the rotation control module is connected with the rotating mechanism to control the rotation of the attenuator 3.
The data communication module includes:
a geographic information module: recording the coordinates of the position of the tracer;
a position reconstruction module: matching the angle information of the rotating position with the signal information of the photoelectric sensor;
a data storage module: storing, exchanging and processing data information of the sensor;
a central processing unit: processing data information;
the signal input and output module: receiving and outputting signals and data;
the geographic information module, the position reconstruction module, the data storage module and the signal input and output module are respectively connected with the central processing unit.
Example 6
In this embodiment, the two monitor bodies 1 work simultaneously, and exchange information of the geographic information module, the rotation control module, and the position reconstruction module through the signal input/output module. And obtaining the distance D between the monitor bodies A and B through a geographic information module.
An advantage of this embodiment over embodiment 1 is that the position of the radiation source can be given more quickly without the need for multiple measurements. Importantly, tracking the movement of the radiation source can also be achieved by continuous scanning of the radiation monitor.
As shown in FIG. 5, the included angles between the monitor bodies A and B and the radiation source are respectivelyθ AAndθ Band the distance between the A monitor body and the B monitor bodyD，The distance between the radiation source and the detector can be obtained based on the three parameters and the sine theoremL，L A=D·sin(θ B)/sin(π-θ A-θ B)。
Example 7
In this embodiment, the height of the radiation source can be located by placing the C-monitor body laterally, as shown in fig. 6 and 7. A. The three monitors 1 of B and C work simultaneously, wherein monitor body C is placed horizontally between A and B, the three monitors exchange the information of geographic information module, rotation control module and position rebuild module through the signal input output module.
Before starting, the location of three monitors, namely, the angle information table 0, the geographic information module A, B and C, is recordedDistance D1 between monitor body A and monitor body C, distance D2 between monitor body C and monitor body B, distance D between monitor body A and monitor body B, and included angle D1 and D2θ 1. Wherein D is more than or equal to D1+ D2, D = D1+ D2 when A, B and C monitor bodies 1 are on the same straight line,θ 1=0。
the position rebuilding module is obtained according to the position of the radiation source during working, and the included angles of the monitor body C, the monitor body A and the radiation sourceθ AThe angle between the monitor body C and the radiation source and the angle between the monitor body B and the radiation sourceθ B. So that the distance between the radiation source and the detector can be calculated by utilizing the trigonometric functionL AAndL Bfurther, the distance D3 between the monitor body and the radiation source can be calculated.
During the rotation process of the C monitor body perpendicular to the horizontal plane, the relative angle of the diaphragm slit 4 pointing to the radiation source and the ground can be obtained according to the rotation angleθ CFurther, the ground clearance h of the radiation source can be calculated. So that the radiation source can be positioned spatially accurately.
Claims (8)
1. A radiation monitor, characterized by: including radiation sensor (2) and monitor organism (1), radiation sensor (2) set up on monitor organism (1), and radiation sensor (2) upper shield is equipped with attenuator (3), attenuator (3) rotate to be set up on monitor organism (1), are equipped with the opening that the radiation source of being convenient for passes through on attenuator (3).
2. The radiation monitor as set forth in claim 1, wherein: the attenuator (3) is rotationally arranged on the monitor body (1) through a rotating mechanism (5).
3. The radiation monitor as set forth in claim 2, wherein: the rotating mechanism (5) is a servo motor (7).
4. The radiation monitor as set forth in claim 1, wherein: the opening on the attenuator (3) is a diaphragm slit (4) parallel to the rotation axis of the attenuator (3).
5. The radiation monitor as set forth in claim 3, wherein: the monitor body (1) is covered with a protective cover (6).
6. The radiation monitor as set forth in claim 1, wherein: the radiation sensor (2) is also connected with a photoelectric sensor, and the photoelectric sensor is connected with a control system in the machine body (1).
7. The radiation monitor as set forth in claim 6, wherein: the control system includes:
the signal processing module: processing the pulse signal from the photosensor;
a power supply module: providing power supply for the control system, the rotating mechanism and the photoelectric sensor;
a rotation control module: controlling the rotation direction and the rotation speed of the attenuator, and recording the angle information corresponding to the rotation speed and the spatial position in real time;
a data communication module: transmitting data to the outside in a wireless or wired mode;
the signal processing module is connected with the photoelectric sensor, the signal processing module is connected with the data communication module, the rotation control module and the power supply module are respectively connected with the data communication module, and the rotation control module is connected with the rotating mechanism to control the rotation of the attenuator (3).
8. The radiation monitor as set forth in claim 7, wherein: the data communication module includes:
a geographic information module: recording the coordinates of the position of the tracer;
a position reconstruction module: the angle information of the rotational position is matched with the signal information of the photoelectric sensor,
determining the correlation degree of the radiation signal and the spatial angle direction;
a data storage module: storing, exchanging and processing data information of the sensor;
a central processing unit: processing data information;
the signal input and output module: receiving and outputting signals and data;
the geographic information module, the position reconstruction module, the data storage module and the signal input and output module are respectively connected with the central processing unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921092135.XU CN210323386U (en) | 2019-07-12 | 2019-07-12 | Ray monitor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921092135.XU CN210323386U (en) | 2019-07-12 | 2019-07-12 | Ray monitor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110568469A (en) * | 2019-07-12 | 2019-12-13 | 夏庆中 | Ray monitor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110568469A (en) * | 2019-07-12 | 2019-12-13 | 夏庆中 | Ray monitor |
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