CN107783169A - Portable gamma ray detection equipment - Google Patents
Portable gamma ray detection equipment Download PDFInfo
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- CN107783169A CN107783169A CN201710897616.7A CN201710897616A CN107783169A CN 107783169 A CN107783169 A CN 107783169A CN 201710897616 A CN201710897616 A CN 201710897616A CN 107783169 A CN107783169 A CN 107783169A
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- gamma ray
- detection equipment
- ray detection
- equipment according
- portable gamma
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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
- G01T1/16—Measuring radiation intensity
- G01T1/20—Measuring radiation intensity with scintillation detectors
- G01T1/202—Measuring radiation intensity with scintillation detectors the detector being a crystal
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- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- 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 portable gamma ray detection equipment, including：Housing, sensor, control PCB；Sensor described in its spy includes radome, and is arranged at scintillation crystal unit, pulse amplifier inside radome, and the scintillation crystal unit is electrically connected with pulse amplifier, and the pulse amplifier is electrically connected with control PCB.Portable gamma ray detection equipment disclosed by the invention, gamma ray is detected using scintillation crystal unit, the ionising radiation survey meter on sale compared to domestic market has low cost, small size, be easy to carry.
Description
Technical field
The present invention relates to a kind of gamma ray detection equipment, more particularly to one kind to be penetrated using scintillation crystal unit detection gamma
The portable gamma ray measurement equipment of line.
Background technology
Ionising radiation refers to all radiation general names that material can be caused to ionize, and its species is a lot, as high speed charged particle has α
Particle, β particles, proton, and uncharged particle have neutron, X ray, gamma-rays.Common ionising radiation includes：Hospital it is saturating
Instrument is penetrated, laboratory energy disperse spectroscopy, the mineral matter marble used in house decoration, industrial various radioactive sources, nuclear industry waste material, is received
The patient of radiotherapy, nuclear power station, and the ray from universe, above-described ionising radiation be primarily referred to as penetration power it is strong,
Endanger big neutron, X ray, gamma Rays.Ionising radiation can result in the damage of cell, particularly DNA damage, increase
Carcinogenic possibility, when damage occurs in sexual gland reproduction cell, then the hereditary information of mistake may be passed into offspring and cause something lost
Pass effect.Especially pregnant woman, children, old man are set with greater need for remote ionising radiation in daily life by ionising radiation detection
It is standby to avoid such radiation.
Ionising radiation detection instrument is based primarily upon three kinds of principles, and Geiger, scintillator count, semiconductor count.Geiger
The Geiger pipe volume of counter is larger, and needs the high voltage power supply for being additionally provided a several hectovolts or even upper kilovolt, real
This existing high voltage power supply needs to take larger space and has potential safety hazard, although the principle of geiger counter is ripe in a word,
But wearable portable ionizing-radiation detector is not suitable for it；Semiconductor counting is with high costs, is adapted in high-end energy spectrum analysis
Instrument uses.
The content of the invention
In order to solve the above technical problems, the invention discloses a kind of portable gamma ray detection equipment, including：Housing,
Sensor, control PCB；Sensor described in its spy includes radome, and be arranged at scintillation crystal unit inside radome,
Pulse amplifier, the scintillation crystal unit are electrically connected with pulse amplifier, and the pulse amplifier electrically connects with control PCB
Connect.
Preferably, the material of the radome is alloy or metal with high magnetic permeability.
Preferably, the radome inner side and outer side is respectively provided with oxidation resistant plated film, or inner side and outer side is at least within
One of there is oxidation resistant plated film.
Preferably, the plated film includes at least one layer of copper plating film and one layer of plated nickel film.
Preferably, the scintillation crystal unit is provided with light shield layer, and the light shield layer coats scintillation crystal, only retains flicker
One exiting surface of crystal；And photoelectric conversion unit, the photoelectric conversion unit couple setting with the exiting surface, and with institute
State pulse amplifier electric connection.
Preferably, the scintillation crystal is cesium iodide or thallium iodide.
Preferably, the light shield layer is titanium dioxide, and the photoelectric conversion unit is photodiode.
Preferably, the comparator being electrically connected with the pulse amplifier is provided with the control PCB.
Preferably, the charge pump being electrically connected with the pulse amplifier is provided with the control PCB.
Preferably, the plated film is one layer of gold-plated film.
Portable gamma ray detection equipment disclosed by the invention, gamma ray is detected using scintillation crystal unit,
The ionising radiation survey meter on sale compared to domestic market has low cost, small size, is easy to carry.
Brief description of the drawings
Fig. 1 is the portable gamma ray detection equipment schematic diagram of the present invention；
Fig. 2 is scintillation crystal unit three-dimensional structural representation of the present invention；
Fig. 3 illustrates for scintillation crystal cell mesh of the present invention；
Fig. 4 is the front view of Fig. 3 neutral body structures；
Fig. 5 is Fig. 4 A-A ' sectional views.
Embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.In accompanying drawing
Give presently preferred embodiments of the present invention.But the present invention can realize in many different forms, however it is not limited to this paper institutes
The embodiment of description.On the contrary, the purpose for providing these embodiments is to make the understanding to the disclosure more thorough
Comprehensively.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The implication that technical staff is generally understood that is identical.Term used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that the limitation present invention.Term as used herein "and/or" includes one or more related
Listed Items arbitrary and all combination.
As shown in accompanying drawing 1 to 5, the invention discloses a kind of portable gamma ray detection equipment, including：Containing housing, pass
Sensor 110, control PCB120；Wherein described sensor 110 includes radome 111, and is arranged at the sudden strain of a muscle inside radome 111
Bright crystal unit 130, pulse amplifier 116, the scintillation crystal unit 130 are electrically connected with pulse amplifier 116, the arteries and veins
Amplifier 116 and control PCB120 is rushed to be electrically connected with.Wherein, the material of the radome 111 is the alloy with high magnetic permeability
Or metal, it is preferred that the alloy or metal of the tool high magnetic permeability can be non-oriented silicon steel sheet or ferrite, to reach shielding
The effect of magnetostatic field.
In addition, the inner side and outer side of radome 111 is respectively provided with oxidation resistant plated film, or inner side and outer side is at least within
One of there is oxidation resistant plated film.In order to shield low energy electromagnetic wave, the anti-oxidant plated film is preferably golden（AU）Plated film, it is plated in described
Have the alloy of high magnetic permeability or the inner side and outer side of metal.It is higher in view of golden cost, from cost consideration, it is also an option that by institute
State anti-oxidant plated film and be changed at least double layer of metal plated film.It is preferred that can it is described tool high magnetic permeability alloy or metal on the inside of and
At least one layer of copper film and one layer of nickel film are plated in outside respectively, and using the copper film bottom of as, plated nickel film again on copper film.Copper coating can shield
Low energy electromagnetic wave is covered, nickel coating has antioxidation, prevents from being corroded.Applicant learns by largely testing, the plating
The thickness of copper film and plated nickel film respectively be at least 7 microns it is preferable with shield effectiveness at 3 microns, that is to say, that the copper plating film and
The thickness critical value of plated nickel film has preferable shield effectiveness when being respectively 7 microns and 3 microns, such as wants to obtain preferably certainly
Shield effectiveness, it can be thickeied on the basis of its critical value, to realize particular mask purpose.
In addition, the scintillation crystal unit 130 is provided with light shield layer 112, the light shield layer 112 coats scintillation crystal 119,
Only retain an exiting surface 1191 of scintillation crystal；And photoelectric conversion unit 114, the photoelectric conversion unit 114 with it is described
The coupling of exiting surface 1191 is set, and is electrically connected with by some wires 115 and the pulse amplifier 116.Specifically will
Pulse amplifier 116 electrically connects with the conductive pin 1141 of photoelectric conversion unit 114.Wherein, the described material of light shield layer 112 is
There is the metal or alloy of high reflection function, preferably aluminium or titanium dioxide for light.The photoelectric conversion unit is photoelectricity
Diode, preferably silicon photoelectric diode.It should be noted that the photoelectric conversion unit is led with the exiting surface 1141 by transparent
Light silica gel 113 realizes coupling, to avoid scintillation crystal deliquescence, and ensures that the two reaches minimum contact gap, to reduce light path
Loss, improve transformation efficiency.
, can with ensure gamma ray conversion in addition, scintillation crystal of the present invention is cuboid or cube structure
See that light light path in the presence of light shield layer is simple, can be projected after some secondary reflections from exiting surface 1191, to improve conversion
Efficiency, naturally it is also possible to select the scintillation crystal of other stereochemical structures to realize effect same.In addition, the preferred iodine of scintillation crystal
Change caesium or thallium iodide.
The pulse amplifier 116 has wire 118A, 118B, 118C, 118D, and 118A, 118B on the outside of the wire,
118C, 118D are provided with insulating barrier 117, and the insulating barrier uses lead titanate ceramics, kept except realizing between wire and housing
Insulation is outer, also with ferromagnetism, realizes full-shield.
Be provided with control PCB120 of the present invention comparator 121, charge pump 122, power management 123, MCU124,
Alarm unit 125, usb 1 26.The MCU is micro-control unit, and the present invention is preferably low-power scm, the alarm
Unit can be with one of buzzer, multi-colored led flashing lamp, vibrations motor for reminding user function or be combined, described
Power management 123, usb 1 26 are realized using prior art, will not be described here.
The comparator 121 is electrically connected with by wire 118D and the pulse amplifier 116, and the charge pump 122 is logical
Wire 118A is crossed to be electrically connected with the pulse amplifier 116.
It can be realized by gamma ray detection equipment of the present invention and gamma ray is converted into detectable telecommunications
Number, and by its by cell phone application display terminal present instantaneous radiation dosage, add up dose of radiation, dose of radiation time graph,
Alarm, related advisory etc., invisible gamma ray is changed into visual data.When there is gamma-ray irradiation, scintillation crystal
Gamma ray is converted into irregular current pulse signal and exported by wire 115 to the arteries and veins being electrically connected with therewith by unit 130
Amplifier 116 is rushed, and then the irregular current pulse signal of capture is converted into by irregular electricity by pulse amplifier 116
Pressure pulse signal, then exported by wire 118B and the voltage pulse signal is converted into standard sine wave to comparator 121.In detail
Yan Zhi, i.e., gamma ray is converted into light by described scintillation crystal 119, and due to the effect of light shield layer 112, light passes through some secondary reflections
Projected afterwards by the exiting surface 1191 of scintillation crystal 119, the photoelectric conversion unit set is now coupled with the exiting surface 1191
114 are converted into the light received faint irregular current pulse signal, then current pulse signal is exported to electric therewith
Property connection pulse amplifier 116, and then the current pulse signal of capture is converted into irregular voltage pulse signal and defeated
Go out to comparator 121, irregular voltage pulse signal is converted into standard sine square voltage pulse by comparator 121 believes
Number, export and analyzed to MCU, store and be sent to alarm unit 125, when beyond threshold value alarm call user's attention gamma ray
Radiation risk.Wherein, the charge pump 122 is that photoelectric conversion unit 114 provides a bias by wire 118A（It is of the invention preferred
18V）, to ensure that photoelectric conversion unit 114 is operated in guided optical mode；The MCU122 is that comparator 121 provides by wire 127
One adjustable dc voltage, and then realize the regulation of the sensitivity of sensor 110；The pulse amplifier 116 is by low noise, high transconductance
Technotron BF862 and operational amplifier A D8542 composition, charge signal is converted to by pulse amplifier 116 by electricity
Pressure amplitude degree exports, and realizes the function of amplification.Because technotron BF862 converts the current into voltage, and pass through computing
Voltage amplification output is that ripe prior art will not be described here by amplifier AD8542.
Portable gamma ray detection equipment disclosed by the invention, gamma ray is detected using scintillation crystal unit,
With simple in construction, small volume, low cost and other advantages.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more specific and detailed, but simultaneously
Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of portable gamma ray detection equipment, including：
Housing, sensor（110）, control PCB（120）；
It is characterized in that：The sensor（110）Including radome（111）, and it is arranged at radome（111）Internal flicker
Crystal unit（130）, pulse amplifier（116）, the scintillation crystal unit（130）With pulse amplifier（116）It is electrically connected with,
The pulse amplifier（116）With controlling PCB（120）It is electrically connected with.
2. portable gamma ray detection equipment according to claim 1, it is characterised in that：The radome（111）'s
Material is alloy or metal with high magnetic permeability.
3. portable gamma ray detection equipment according to claim 1, it is characterised in that：The radome（111）It is interior
Side and outside are respectively provided with oxidation resistant plated film, or inner side and outer side at least one there is oxidation resistant plated film.
4. portable gamma ray detection equipment according to claim 3, it is characterised in that：The plated film includes at least one
Layer copper plating film and one layer of plated nickel film.
5. portable gamma ray detection equipment according to claim 1, it is characterised in that：The scintillation crystal unit
（130）It is provided with light shield layer（112）, the light shield layer（112）Coat scintillation crystal（119）, only retain one of scintillation crystal
Exiting surface（1191）；And photoelectric conversion unit（114）, the photoelectric conversion unit（114）With the exiting surface（1191）Coupling
Close set, and with the pulse amplifier（116）It is electrically connected with.
6. portable gamma ray detection equipment according to claim 5, it is characterised in that：The scintillation crystal（119）
For cesium iodide or thallium iodide.
7. portable gamma ray detection equipment according to claim 5, it is characterised in that：The light shield layer（112）For
Titanium dioxide, the photoelectric conversion unit（114）For photodiode.
8. portable gamma ray detection equipment according to claim 1, it is characterised in that：The control PCB（120）On
It is provided with and the pulse amplifier（116）The comparator of electric connection（121）.
9. portable gamma ray detection equipment according to claim 1, it is characterised in that：The control PCB（120）On
It is provided with and the pulse amplifier（116）The charge pump of electric connection（122）.
10. portable gamma ray detection equipment according to claim 3, it is characterised in that：The plated film is one layer of plating
Golden film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710897616.7A CN107783169A (en) | 2017-09-28 | 2017-09-28 | Portable gamma ray detection equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710897616.7A CN107783169A (en) | 2017-09-28 | 2017-09-28 | Portable gamma ray detection equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107783169A true CN107783169A (en) | 2018-03-09 |
Family
ID=61433616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710897616.7A Pending CN107783169A (en) | 2017-09-28 | 2017-09-28 | Portable gamma ray detection equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107783169A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101861528A (en) * | 2007-11-20 | 2010-10-13 | 东芝电子管器件株式会社 | Radiation detector and manufacture method thereof |
| CN102361593A (en) * | 2009-03-25 | 2012-02-22 | 皇家飞利浦电子股份有限公司 | Apparatus and method for data acquisition using an imaging apparatus |
| CN202693801U (en) * | 2012-07-03 | 2013-01-23 | 成都麦特斯科技有限公司 | Radiation dosemeter |
| JP2014163890A (en) * | 2013-02-27 | 2014-09-08 | Shin Nippon Denko Kk | Measuring device |
| CN104969091A (en) * | 2013-01-23 | 2015-10-07 | Ag医疗公司 | Radiology device |
| US20150282773A1 (en) * | 2012-10-16 | 2015-10-08 | Consiglio Nazionale Delle Ricerche (Cnr) | Portable gamma camera |
-
2017
- 2017-09-28 CN CN201710897616.7A patent/CN107783169A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101861528A (en) * | 2007-11-20 | 2010-10-13 | 东芝电子管器件株式会社 | Radiation detector and manufacture method thereof |
| CN102361593A (en) * | 2009-03-25 | 2012-02-22 | 皇家飞利浦电子股份有限公司 | Apparatus and method for data acquisition using an imaging apparatus |
| CN202693801U (en) * | 2012-07-03 | 2013-01-23 | 成都麦特斯科技有限公司 | Radiation dosemeter |
| US20150282773A1 (en) * | 2012-10-16 | 2015-10-08 | Consiglio Nazionale Delle Ricerche (Cnr) | Portable gamma camera |
| CN104969091A (en) * | 2013-01-23 | 2015-10-07 | Ag医疗公司 | Radiology device |
| JP2014163890A (en) * | 2013-02-27 | 2014-09-08 | Shin Nippon Denko Kk | Measuring device |
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Application publication date: 20180309 |