CN204705719U - A kind of portable radioactive contamination meter - Google Patents
A kind of portable radioactive contamination meter Download PDFInfo
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- CN204705719U CN204705719U CN201520319074.1U CN201520319074U CN204705719U CN 204705719 U CN204705719 U CN 204705719U CN 201520319074 U CN201520319074 U CN 201520319074U CN 204705719 U CN204705719 U CN 204705719U
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Abstract
The utility model discloses a kind of portable radioactive contamination meter, comprise acquisition of signal unit, photomultiplier, emitter follower, alpha ray signal screening device, β ray signal discriminator, data processing unit, data outputting unit, power supply; Described acquisition of signal unit connects photomultiplier; Described photomultiplier connects emitter follower; Described emitter follower parallel join alpha ray signal screening device and β ray signal discriminator; Described alpha ray signal screening device, β ray signal discriminator are parallel is connected into data processing unit; Described data processing unit connection data output unit; Described power supply connection data processing unit and photomultiplier; Described data processing unit read respectively alpha ray signal screening device, β ray signal discriminator reading and shown respectively by data outputting unit after computing.The utility model can distinguish alpha ray and Beta-ray concrete numerical value, and overcomes measuring instrument γ sensitivity issues.Measurement data is accurate, simple to operate, compact structure, is easy to carry.
Description
Technical field
The utility model relates to nucleic and detects analysis technical field, relates in particular to a kind of portable radioactive contamination meter.
Background technology
Electromagnetic radiation refers to energy in the form of an electromagnetic wave by the phenomenon of spatial.Often there is the problem of radioactive surface contamination in radiation work places such as environment, nuclear medicine, commodity inspection, health, nuclear power, reactor, Isotope productions, and surperficial radioactive contamination main manifestations is alpha activity and beta activity.At present, although domestic and international Portable alpha, β surface activity meter is of a great variety, its measurement result is held and is received gamma-ray interference all very much in practice, namely there is so-called measuring instrument γ sensitivity issues.In addition, existing Portable alpha, β surface activity meter can not distinguish alpha ray and β ray, but a display total value, negative effect is caused to the correct assessment of anaphase.
Utility model content
For solving the problem, the utility model provides a kind of portable radioactive contamination meter.
Concrete technical scheme of the present utility model is as follows:
A kind of portable radioactive contamination meter, comprises acquisition of signal unit, photomultiplier, emitter follower, alpha ray signal screening device, β ray signal discriminator, data processing unit, data outputting unit, power supply; Described acquisition of signal unit connects photomultiplier; Described photomultiplier connects emitter follower; Described emitter follower parallel join alpha ray signal screening device and β ray signal discriminator; Described alpha ray signal screening device, β ray signal discriminator are parallel is connected into data processing unit; Described data processing unit connection data output unit; Described power supply connection data processing unit and photomultiplier; Described data processing unit read respectively alpha ray signal screening device, β ray signal discriminator reading and shown respectively by data outputting unit after computing.
By adopting this technical scheme: acquisition of signal unit reads the photosignal in air, after this photosignal is first after photomultiplier and emitter follower two-stage amplify, therefrom screen out alpha ray and β ray by alpha ray signal screening device and β ray signal discriminator respectively, read respectively through data processing unit and shown respectively by data outputting unit after computing.Thus, achieve and distinguish alpha ray and β ray, instead of a display total value, thus obtain radiation detection outcome evaluation more accurately.
Preferably, in above-mentioned portable radioactive contamination meter, also comprise calibrating protective cover, described calibrating protective cover comprises protecting crust, calibrating protective cover is detachable block, be placed in outside acquisition of signal unit or from acquisition of signal unit and take off.
By adopting this technical scheme: when portable radioactive contamination meter is in idle state; calibrating shielding cover is outside acquisition of signal unit; protecting crust shields exterior light electric radiation signal and utilizes the housing of protecting crust to protect acquisition of signal unit; take away when portable radioactive contamination meter starts calibrating protective cover when radionetric survey is measured, Portable alpha, β surface contamination measuring instrument are normally measured.
It is further preferred that examine and determine protective cover described in above-mentioned portable radioactive contamination meter also comprise natural gamma radioactive source, described natural gamma radioactive source is built in protecting crust.
By adopting this technical scheme: when portable radioactive contamination meter is in idle state, the impact caused because of gamma-rays when realizing utilizing natural gamma radioactive source examine and determine the current γ sensitivity of portable radioactive contamination meter and it adjusted in advance zero thus make formally to measure drops to minimum.
Further preferably, data outputting unit described in above-mentioned portable radioactive contamination meter comprises liquid crystal display, mutual button, photoelectric alarm lamp, audio buzzer, data output serial ports and data-carrier store; For respectively with the reading of the display of the form such as image, sound, photoelectricity α, β ray signal and realize data store and external data mutual.Described acquisition of signal unit can adopt large-area flicker bulk detector or other detectors.
Compared with prior art, the utility model can distinguish alpha ray and Beta-ray concrete numerical value, and overcomes measuring instrument γ sensitivity issues.Measurement data is accurate, simple to operate, compact structure, is easy to carry.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment 1;
Fig. 2 is the structural representation of the acquisition of signal unit in Fig. 1;
Fig. 3 is the structural representation of a-quadrant in Fig. 1.
In above-mentioned accompanying drawing, the corresponding relation of each parts and Reference numeral is as follows:
1, acquisition of signal unit; 2, photomultiplier; 3, emitter follower; 4, alpha ray signal screening device; 5, β ray signal discriminator; 6, data processing unit; 7, data outputting unit; 8, power supply; 9, protective cover is examined and determine; 71, liquid crystal display; 72, mutual button; 73, photoelectric alarm lamp; 74, audio buzzer; 75, data export serial ports; 76, data-carrier store; 91, protecting crust; 92, natural gamma radioactive source.
Embodiment
In order to be illustrated more clearly in the technical solution of the utility model, below in conjunction with accompanying drawing, the utility model is further described.
The utility model embodiment 1 as Figure 1-3:
A kind of portable radioactive contamination meter, comprises acquisition of signal unit 1, photomultiplier 2, emitter follower 3, alpha ray signal screening device 4, β ray signal discriminator 5, data processing unit 6, data outputting unit 7, power supply 8 and calibrating protective cover 9.Described acquisition of signal unit 1 connects photomultiplier 2; Described photomultiplier 2 connects emitter follower 3; Described emitter follower 3 parallel join alpha ray signal screening device 4 and β ray signal discriminator 5; Described alpha ray signal screening device 4, β ray signal discriminator 5 walk abreast and are connected into data processing unit 6; Described data processing unit 6 connection data output unit 7; Described power supply 8 connection data processing unit 6 and photomultiplier 2.
Wherein, described acquisition of signal unit 1 is adopted as large-area flicker bulk detector.Described data outputting unit 7 comprises liquid crystal display 71, mutual button 72, photoelectric alarm lamp 73, audio buzzer 74, data output serial ports 75 and data-carrier store 76.Described calibrating protective cover 9 comprises protecting crust 91 and natural gamma radioactive source 92, described natural gamma radioactive source 92 are built in protecting crust 91.Calibrating protective cover 9 is detachable block, is placed in when portable radioactive contamination meter is in idle state outside acquisition of signal unit 1; Take off from acquisition of signal unit 1 when portable radioactive contamination meter is in surveying work state.
In practice: when portable radioactive contamination meter is in idle state, calibrating protective cover 9 is enclosed within outside acquisition of signal unit 1, and protecting crust 91 shields exterior light electric radiation signal, and utilizes protecting crust 91 housing to protect acquisition of signal unit 1.Meanwhile, natural gamma radioactive source 92 is utilized to examine and determine the current γ sensitivity of portable radioactive contamination meter and it is adjusted zero in advance.When portable radioactive contamination meter starts radioactivity survey, take off calibrating protective cover 9 and acquisition of signal unit 1 is exposed in atmosphere.Acquisition of signal unit 1 reads the photosignal in air, this photosignal amplifies through photomultiplier 2 and emitter follower 3 two-stage first, and enter alpha ray signal screening device 4 and β ray signal discriminator 5 respectively, therefrom screen out alpha ray and Beta-ray reading, this reading reads respectively through data processing unit 6 and is sent to data outputting unit 7 after computing, by liquid crystal display 71, photoelectric alarm lamp 73, audio buzzer 74 is respectively with image, sound, the forms such as photoelectricity show, by mutual button 72, data export serial ports 75 and data-carrier store 76 realizes data storage and external data is mutual.
The above; be only specific embodiment of the utility model; but protection domain of the present utility model is not limited thereto; the technician of any skilled is in technical scope disclosed in the utility model; the change that can expect easily or replacement, all should be encompassed within protection domain of the present utility model.Protection domain of the present utility model is as the criterion with the protection domain of claims.
Claims (5)
1. a portable radioactive contamination meter, is characterized in that: comprise acquisition of signal unit (1), photomultiplier (2), emitter follower (3), alpha ray signal screening device (4), β ray signal discriminator (5), data processing unit (6), data outputting unit (7), power supply (8);
Described acquisition of signal unit (1) connects photomultiplier (2); Described photomultiplier (2) connects emitter follower (3); Described emitter follower (3) parallel join alpha ray signal screening device (4) and β ray signal discriminator (5); Described alpha ray signal screening device (4), β ray signal discriminator (5) walk abreast and are connected into data processing unit (6); Described data processing unit (6) connection data output unit (7); Described power supply (8) connection data processing unit (6) and photomultiplier (2); Described data processing unit (6) read respectively alpha ray signal screening device (4), β ray signal discriminator (5) reading and shown respectively by data outputting unit (7) after computing.
2. a kind of portable radioactive contamination meter as claimed in claim 1, it is characterized in that: also comprise calibrating protective cover (9), described calibrating protective cover (9) comprises protecting crust (91), calibrating protective cover (9) is detachable block, be placed in acquisition of signal unit (1) outside or take off from acquisition of signal unit (1).
3. a kind of portable radioactive contamination meter as claimed in claim 2, it is characterized in that: described calibrating protective cover (9) also comprises natural gamma radioactive source (92), described natural gamma radioactive source (92) is built in protecting crust (91).
4. a kind of portable radioactive contamination meter as claimed in claim 3, is characterized in that: described data outputting unit (7) comprises liquid crystal display (71), mutual button (72), photoelectric alarm lamp (73), audio buzzer (74), data export serial ports (75) and data-carrier store (76).
5. a kind of portable radioactive contamination meter as claimed in claim 4, is characterized in that: described acquisition of signal unit (1) is large-area flicker bulk detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520319074.1U CN204705719U (en) | 2015-05-18 | 2015-05-18 | A kind of portable radioactive contamination meter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520319074.1U CN204705719U (en) | 2015-05-18 | 2015-05-18 | A kind of portable radioactive contamination meter |
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| CN204705719U true CN204705719U (en) | 2015-10-14 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107300712A (en) * | 2016-04-14 | 2017-10-27 | 中国辐射防护研究院 | It is a kind of to measure the cascade type scintillator detector of β, gamma spectrum simultaneously |
| CN107416209A (en) * | 2017-08-31 | 2017-12-01 | 华北电力大学 | A kind of light-duty marine scounting aeroplane portable radioactive nucleic detection device |
| CN107991701A (en) * | 2017-11-20 | 2018-05-04 | 湖北华昱天辰环保节能科技股份有限公司 | A kind of radioactive environment personnel protection management system |
-
2015
- 2015-05-18 CN CN201520319074.1U patent/CN204705719U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107300712A (en) * | 2016-04-14 | 2017-10-27 | 中国辐射防护研究院 | It is a kind of to measure the cascade type scintillator detector of β, gamma spectrum simultaneously |
| CN107416209A (en) * | 2017-08-31 | 2017-12-01 | 华北电力大学 | A kind of light-duty marine scounting aeroplane portable radioactive nucleic detection device |
| CN107416209B (en) * | 2017-08-31 | 2023-11-24 | 华北电力大学 | Portable radionuclide detection device of light-duty marine unmanned reconnaissance aircraft |
| CN107991701A (en) * | 2017-11-20 | 2018-05-04 | 湖北华昱天辰环保节能科技股份有限公司 | A kind of radioactive environment personnel protection management system |
| CN107991701B (en) * | 2017-11-20 | 2019-08-20 | 湖北华昱天辰环保节能科技股份有限公司 | A kind of radioactive environment personnel protection management system |
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