CN110389375A - A kind of gamma-ray detection device based on scintillator - Google Patents
A kind of gamma-ray detection device based on scintillator Download PDFInfo
- Publication number
- CN110389375A CN110389375A CN201910753468.0A CN201910753468A CN110389375A CN 110389375 A CN110389375 A CN 110389375A CN 201910753468 A CN201910753468 A CN 201910753468A CN 110389375 A CN110389375 A CN 110389375A
- Authority
- CN
- China
- Prior art keywords
- scintillator
- circuit
- circuit board
- gamma
- ray detection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- G01T1/003—Scintillation (flow) cells
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/20—Measuring radiation intensity with scintillation detectors
- G01T1/2012—Measuring radiation intensity with scintillation detectors using stimulable phosphors, e.g. stimulable phosphor sheets
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/20—Measuring radiation intensity with scintillation detectors
- G01T1/202—Measuring radiation intensity with scintillation detectors the detector being a crystal
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/20—Measuring radiation intensity with scintillation detectors
- G01T1/208—Circuits specially adapted for scintillation detectors, e.g. for the photo-multiplier section
Abstract
The invention discloses a kind of gamma-ray detection device based on scintillator, including scintillator, crust of the device, photomultiplier tube, analog circuit board, digital circuit board and display unit, described device shell are opaque magazine, the shell as device；The front end of crust of the device is arranged in the scintillator；The photomultiplier tube is connect with the scintillator, and the output pin of photomultiplier tube is connect with analog circuit board；The analog circuit board includes that signal follows circuit, noise filter circuit, amplifying circuit, comparison circuit, low-voltage power circuit and high-voltage power circuit；The digital circuit board includes high-speed counter circuit and control circuit；The display unit is originally practical to have the advantages that good portability, signal processing are fast, precision is high, counting rate is fast for showing measurement result.
Description
Technical field
The present invention relates to technical field of photoelectric detection, and in particular to a kind of gamma-ray detection device based on scintillator.
Background technique
Gamma-rays, also known as γ particle flux, the ray released when being atomic energy order transition de excitation are that wavelength is shorter than 0.01
Angstrom electromagnetic wave.Gamma-rays has a very strong penetration power, can be used to detect a flaw in industry or the automatic control of assembly line.Gamma-rays is to thin
Born of the same parents have lethality, are medically used to treat tumour.
Therefore, there is extremely important meaning to gamma-ray detection.Currently, traditional scintillator gamma ray detector volume
Often larger, portability is very poor.Meanwhile there is detection accuracy difference in portable scintillator gamma ray detector again.
Summary of the invention
To solve the above problems, the present invention proposes a kind of gamma-ray detection device based on scintillator, including scintillator, dress
Shell, photomultiplier tube, analog circuit board, digital circuit board and display unit are set, this is practical with easy to operate, volume
Advantage small, detection accuracy is high.
The invention is realized by the following technical scheme: a kind of gamma-ray detection device based on scintillator, including scintillator,
Crust of the device, photomultiplier tube, analog circuit board, digital circuit board and display unit, described device shell are impermeable brightness
Box, the shell as device；The front end of crust of the device is arranged in the scintillator；The photomultiplier tube and the scintillator connect
It connects, the output pin of photomultiplier tube is connect with analog circuit board；The analog circuit board includes that signal follows circuit, noise filter
Wave circuit, amplifying circuit, comparison circuit, low-voltage power circuit and high-voltage power circuit；The digital circuit board includes high speed
Counter circuit and control circuit are transmitted signal by winding displacement and analog circuit board, and are fixed by the connecting rod together；
The display unit is realized human-computer interaction, is connect by data line with digital circuit board for showing measurement result.
Further, the scintillator is alkali halide inorganic scintillator, and size is greater than 3cm × 3cm × 3cm.
Further, the wavelength of the photomultiplier tube is 400nm-1100nm.
Further, the high-speed counter circuit includes FPGA or CPLD.
Further, the control circuit includes single-chip microcontroller and blue-tooth device.
Further, the display unit includes capacitance plate, LCD screen or OLED screen curtain.
Further, the high-voltage power circuit is used to provide bias voltage, voltage range 200V- for photomultiplier tube
500V。
Further, described device includes lithium battery or power supply line well.
Compared with prior art, the beneficial effects of the present invention are:
1, the configuration of the present invention is simple has the advantages that easy to use, easy to operate；
2, the present invention is provided with scintillator, crust of the device, photomultiplier tube, analog circuit board, digital circuit board and shows
Show unit, it is originally practical that structure is simplified, device structure is reduced, there is better portability.Meanwhile the present invention passes through
Analog circuit board, digital circuit board are set, have the advantages that signal processing is fast, precision is high, counting rate is fast.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the structural schematic diagram of analog circuit board of the present invention；
Fig. 3 is the structural schematic diagram of digital circuit board of the present invention；
Fig. 4 is the structural schematic diagram that signal of the present invention follows circuit；
Fig. 5 is the structural schematic diagram of amplifying circuit of the present invention.
Wherein, 1- scintillator；Outside 2- device；3- photomultiplier tube；4- analog circuit board；5- connecting rod；6- digital circuit
Plate；7- display unit；8- data line；9- winding displacement；10- output pin；11- signal follows circuit；12- noise filter circuit；13-
Amplifying circuit；14- comparison circuit；15- low-voltage power circuit；16- high-voltage power circuit；17- high-speed counter circuit；18- control
Circuit processed.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, a kind of embodiment provided by the invention: a kind of gamma-ray detection device based on scintillator, including
Voltage transformation unit, bus, test cell, output unit, DC load, hydrogen fuel cell, air supply unit, gas monitoring unit, electricity
Road detection unit, alarm unit have the advantages that easy to operate, easy to use, safe.
The invention is realized by the following technical scheme: a kind of gamma-ray detection device based on scintillator, including scintillator
1, crust of the device 2, photomultiplier tube 3, analog circuit board 4, digital circuit board 6 and display unit 7, described device shell 2 are
Opaque magazine, the shell as device；The front end of crust of the device 2 is arranged in the scintillator 1；The photomultiplier tube 3 with
The scintillator 1 connects, and the output pin 10 of photomultiplier tube 3 is connect with analog circuit board 4；The analog circuit board 4 includes
Signal follows circuit 11, noise filter circuit 12, amplifying circuit 13, comparison circuit 14, low-voltage power circuit 15 and high-voltage electricity
Source circuit 16；The digital circuit board 6 includes high-speed counter circuit 17 and control circuit 18, passes through winding displacement 9 and simulation
Circuit board 4 transmits signal, and is fixed together by connecting rod 5；The display unit 7 realizes people for showing measurement result
Machine interaction, is connect by data line 8 with digital circuit board.
The scintillator 1 is alkali halide inorganic scintillator, and size is greater than 3cm × 3cm × 3cm.
The wavelength of the photomultiplier tube 3 is 400nm-1100nm.
The high-speed counter circuit 17 includes FPGA or CPLD.
The control circuit 18 includes single-chip microcontroller and blue-tooth device.
The display unit 7 includes capacitance plate, LCD screen or OLED screen curtain.
The high-voltage power circuit 16 is used to provide bias voltage, voltage range 200V-500V for photomultiplier tube 3.
Described device includes lithium battery or power supply line well.
Working principle: a kind of gamma-ray detection device based on scintillator, including scintillator 1, crust of the device 2, photoelectricity times
Increase pipe 3, analog circuit board 4, digital circuit board 6 and display unit 7.
Crust of the device 2 columnar opaque magazines, as this Practical casing, remaining component is both placed in device
The inside of shell 2 simultaneously fixes.
The front end of crust of the device 2 is arranged in the scintillator 1.When have gamma-rays pass through crust of the device 2 and enter scintillator 1
When, the faint fluorescence of the sending that scintillator 1 can be spontaneous.The fluorescence can enter photomultiplier tube 3.Photomultiplier tube 3 receives glimmering
Fluorescence can be converted to photoelectron after light and amplified step by step, finally export the electric signal of 10 output response of output pin again.The electricity
Signal can enter analog circuit board 4.The analog circuit board 4 includes that signal follows circuit 11, noise filter circuit 12, amplification
Circuit 13, comparison circuit 14, low-voltage power circuit 15 and high-voltage power circuit 16.As shown in figure 4, signal follows circuit 11 to use
It is followed in carrying out signal to electric signal, enhances driving capability.Noise filter circuit 12 is used to filter out the noise in signal.Such as Fig. 5
Shown, amplifying circuit 13 is used for amplified signal amplitude.The signal that comparison circuit 14 is used to input is relatively and output is at one one
A pulse signal.
Digital circuit board 6 includes high-speed counter circuit 17 and control circuit 18.High-speed counter circuit 17 includes
FPGA or CPLD is able to achieve high counting rate.The value counted to get is passed to control by serial ports by high-speed counter circuit 17
Circuit 18 processed.Control circuit 18 includes single-chip microcontroller, working condition used to control the device.
Display unit 7 is realized human-computer interaction, is connect by data line 8 with digital circuit board for showing measurement result.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
Claims (8)
1. a kind of gamma-ray detection device based on scintillator, which is characterized in that including scintillator (1), crust of the device (2), light
Electric multiplier tube (3), analog circuit board (4), digital circuit board (6) and display unit (7), described device shell (2) are impermeable
Brightness box, the shell as device；Front end of scintillator (1) setting in crust of the device (2)；The photomultiplier tube (3)
It is connect with the scintillator (1), the output pin (10) of photomultiplier tube (3) is connect with analog circuit board (4)；The simulation electricity
Road plate (4) includes that signal follows circuit (11), noise filter circuit (12), amplifying circuit (13), comparison circuit (14), low tension
Source circuit (15) and high-voltage power circuit (16)；The digital circuit board (6) includes high-speed counter circuit (17) and control
Circuit (18) processed transmits signal by winding displacement (9) and analog circuit board (4), and is fixed together by connecting rod (5)；Institute
Display unit (7) are stated for showing measurement result, human-computer interaction is realized, is connect by data line (8) with digital circuit board.
2. a kind of gamma-ray detection device based on scintillator according to claim 1, it is characterised in that: the scintillator
It (1) is alkali halide inorganic scintillator, size is greater than 3cm × 3cm × 3cm.
3. a kind of gamma-ray detection device based on scintillator according to claim 1, it is characterised in that: the photoelectricity times
The wavelength for increasing pipe (3) is 400nm-1100nm.
4. a kind of gamma-ray detection device based on scintillator according to claim 1, it is characterised in that: the high speed meter
Number device circuit (17) includes FPGA or CPLD.
5. a kind of gamma-ray detection device based on scintillator according to claim 1, it is characterised in that: the control electricity
Road (18) includes single-chip microcontroller and blue-tooth device.
6. a kind of gamma-ray detection device based on scintillator according to claim 1, it is characterised in that: the display is single
First (7) include capacitance plate, LCD screen or OLED screen curtain.
7. a kind of gamma-ray detection device based on scintillator according to claim 1, it is characterised in that: the high-voltage electricity
Source circuit (16) is used to provide bias voltage, voltage range 200V-500V for photomultiplier tube (3).
8. a kind of gamma-ray detection device based on scintillator according to claim 1, it is characterised in that: described device is good
Including lithium battery or power supply line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910753468.0A CN110389375A (en) | 2019-08-15 | 2019-08-15 | A kind of gamma-ray detection device based on scintillator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910753468.0A CN110389375A (en) | 2019-08-15 | 2019-08-15 | A kind of gamma-ray detection device based on scintillator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110389375A true CN110389375A (en) | 2019-10-29 |
Family
ID=68288843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910753468.0A Pending CN110389375A (en) | 2019-08-15 | 2019-08-15 | A kind of gamma-ray detection device based on scintillator |
Country Status (1)
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| CN (1) | CN110389375A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150234057A1 (en) * | 2012-09-21 | 2015-08-20 | Johnson Matthey Public Limited Company | Photomultiplier apparatus and radiation detector incorporating such apparatus |
| US20150323682A1 (en) * | 2014-05-09 | 2015-11-12 | Saint-Gobain Ceramics & Plastics, Inc. | Radiation Detection Apparatus Having A Doped Scintillator And A Pulse Shape Analysis Module And A Method Of Using The Same |
| CN105863606A (en) * | 2015-01-19 | 2016-08-17 | 中国石油集团长城钻探工程有限公司 | Natural gamma-ray logging pup joint |
| CN208902882U (en) * | 2015-11-13 | 2019-05-24 | 菲力尔探测公司 | Radiation detector module and radiation detector |
-
2019
- 2019-08-15 CN CN201910753468.0A patent/CN110389375A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150234057A1 (en) * | 2012-09-21 | 2015-08-20 | Johnson Matthey Public Limited Company | Photomultiplier apparatus and radiation detector incorporating such apparatus |
| US20150323682A1 (en) * | 2014-05-09 | 2015-11-12 | Saint-Gobain Ceramics & Plastics, Inc. | Radiation Detection Apparatus Having A Doped Scintillator And A Pulse Shape Analysis Module And A Method Of Using The Same |
| CN105863606A (en) * | 2015-01-19 | 2016-08-17 | 中国石油集团长城钻探工程有限公司 | Natural gamma-ray logging pup joint |
| CN208902882U (en) * | 2015-11-13 | 2019-05-24 | 菲力尔探测公司 | Radiation detector module and radiation detector |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20191029 |
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| WD01 | Invention patent application deemed withdrawn after publication |