CN104808235A - Human nasal swab alpha ray dose fast detector with automatic sample change function - Google Patents
Human nasal swab alpha ray dose fast detector with automatic sample change function Download PDFInfo
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- CN104808235A CN104808235A CN201410035835.0A CN201410035835A CN104808235A CN 104808235 A CN104808235 A CN 104808235A CN 201410035835 A CN201410035835 A CN 201410035835A CN 104808235 A CN104808235 A CN 104808235A
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Abstract
The invention relates to a human nasal swab alpha ray dose fast detector with an automatic sample change function. The fast detector is characterized by automatic sample change and continuous rapid detection, and belongs to the technical field of radiation dose protection. The detector is mainly composed of an alpha ray detection system, a sample frame, a shell, a vacuum system, a servo motor, and a computer. The sample frame disposed in the shell is equally divided into five chambers, and the sample frame can be rotated to make all the chambers reach five positions one after another, namely, a sample introduction position, a vacuum pumping position, a detection position, a vacuum degassing position and a sample discharge position. In the sample introduction and discharge positions, a nasal swab equipped with a bracket is put into an I-shaped slot of the sample or leave the slot and enter a nasal swab collecting box by gravity. The chamber in the vacuum pumping position is connected with a mechanical pump through a three-way pipe, and the other end of the three-way pipe is connected with the chamber in the detection position through a rapid vacuum protection valve. Vacuum sealing is realized through sealing contact between the sample frame and the shell. Alpha ray detection is automatically controlled by the computer. After detection of a sample is completed, the sampling frame is rotated by the servo motor to implement automatic sample change.
Description
Technical field
The present invention relates to radiation dose protection field, particularly relate to the alpha-active device for fast detecting of a kind of human nasal swab.
Background technology
The method of comparative maturity is had both at home and abroad about radioactive detection, comprise the radioactive detection of variety classes, experimental design in testing process, the process of data and consideration (the Nicholas Tsoulfanidis of error, SheldonLandsberger, Measurement and detection of radiation, CRC press, 2011) there is the theoretical foundation of comparative maturity.Also the alpha activity about potable water is had to detect at home, the alpha activity of solid sample detects (Li Fang etc., the total A of Shanghai Atmosphere precipitum, total beta activity monitoring, radiation protection, 2007,27 (4)), the alpha activity of atmospheric fallout detects (Xie Wei, total α, Total Beta Radioactivity the study of the monitoring method in solid, radiation protection communication, 2000,20 (3)) these detect all needs sampling and sample preparation, and experimental period is long, can not detect and assessment as the crowd's nuclear pollution in enormous quantities of burst nuclear accident.And effectively can solve the alpha-active device for fast detecting with automatic sample-changing function of human nasal swab in enormous quantities and be still a blank, the present invention is just for the scarcity of this one side technical products, and day by day perplex the problem of nuclear safety of the public, design a kind of device for the alpha-active quick detection of a large amount of human nasal swabs in Nuclear Accident Emergency process with automatic sample-changing function.
Market at home has for alpha-active detector, but can not realize that Site Detection is alpha-active Portable Automaticly varies quick detection.Meanwhile, existing pick-up unit is relatively stricter to the requirement of sample, and for this more special sample of nose swab, in the whole process filling sample and detection, accomplish no pollution, be very difficult, this problem is also the problem to be solved in the present invention.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides a kind of for human nasal swab alpha ray dosage device for fast detecting in enormous quantities.To realize the alpha-active quick detection of human body in enormous quantities, and accomplish the portable of whole device, the automatic realization of sample process and the cross pollution avoiding in testing process.The technical solution adopted in the present invention is:
One, design Automatic continuous varies rapid detection system
(1) system overview
This detection system mainly contains alpha detection system, specimen holder, shell, vacuum system, servomotor and computing machine composition.Wiring layout as shown in Figure 1,1 is the vacuum chamber that detection system specimen holder and upper and lower covers surround; 2 is human nasal swab boxes, is connected to vacuum chamber injection port place; 3 place's circular holes connect driven by servomotor axle for installing, and this driving shaft rotates for driving sample holder; 4 place's circular holes are for installing detector; 5 places install inspection and finish sample collection box.
(2) design of vacuum chamber and vacuum keep
Fig. 2 a is depicted as the shell of vacuum chamber, and its inside surface is smooth, 6,7 two diameters be the perforate of 2cm as vacuumizing, the consideration of its position illustrates in wiring layout; 8 for being connected with the vent hole of pneumatic sound suppressor, and the venting being used as the complete chamber of inspection goes out sample; 2,5 rectangle sample holes are mated with sampling box size, and the two angle is 72 °; 9 is the circular port of through upper and lower surface, for through driving shaft.
Fig. 2 b is depicted as specimen holder, 5 chambers of its decile; 10 are depicted as specimen holder drum draw-in groove, and for loading the nose swab sample being furnished with drum support, it does not contact with the inside surface up and down of can; 11 are depicted as rubber gasket draw-in groove, and rubber gasket makes specially according to draw-in groove, are used as sealing; 12 are depicted as the drive shaft hole being with keyway.
Fig. 2 c is the assembling signal of 2a and 2b, and be in shown position, 2 show that rectangular opening faces A district draw-in groove, and 5 show that rectangular opening faces E district draw-in groove; Hole 7 faces nose swab support to be checked, hole 6 and hole 7, angulation α scope is 40 ° ~ 66 ° (getting 54 ° in design drawing), hole 8 and hole 7 angulation β scope are 75 ° ~ 105 ° (getting 90 ° in design drawing), this is that the vacuum in the BC Liang Ge district considered in sample holder rotation process keeps and goes out the vacuum breaking at sample place, be specially: when E13 overlaps with rectangular opening 2, A13 not yet arrives hole 6 place, when E13 is completely through rectangular opening 2, A13 just arrives hole 6 place, so, B district is forvacuum; Detecting area C (rotate with specimen holder, specimen holder chamber is rotated to this district successively) is in vacuum state always, just can detect after nose swab arrives position to be measured.And when examining the sample arrival D district finished, destroy vacuum by the vent hole being connected with pneumatic sound suppressor, then send sample by outlet.Hole 6 directly connects mechanical pump, and hole 7 connects mechanical pump by fast vacuum protective valve.Fast vacuum protective valve is closed when B district vacuum is poorer than C district vacuum, to keep C district vacuum.
(3) realization of automatic sample-changing
In testing process, each sample is examined in detection zone, and inspection enters next position with Rotary Specimen Rack after finishing, and when eventually passing through outlet 5, rely on Action of Gravity Field Automatic-falling, due to the inclined design of sample box, sample slowly can slip into disposable box.Simultaneously, injection port 2 place has measuring samples to load specimen holder.
Two, the nose swab sample box of design and system support
Figure 3 shows that nose swab box, nose swab is fixed on I-shaped bracket, is then placed in nose swab box, has baffle plate below nose swab box, prevent sample from coming off, can extract out after placing.Nose swab box specification is 12.This nose swab box avoids nose swab to be detected and contacts with shell with sampling box, specimen holder in dress sample with the process of detection, and contact each other, thus avoids cross pollution.
Compared with prior art, the invention has the beneficial effects as follows when vacuum is not destroyed in detection zone, achieve the Automatic continuous that human nasal swab alpha activity detects to vary, saving time and manpower for detecting, can be used in the quick detection of the nose swab sample of crowd in enormous quantities after nuclear accident.
Accompanying drawing explanation
Fig. 1 is the vacuum automatic sample-changing device sketch plan for human nasal swab alpha ray dose measurement;
Fig. 2 a is vacuum chamber shell;
Fig. 2 b is the specimen holder in vacuum chamber;
Fig. 2 c is the wiring layout of vacuum chamber;
Fig. 3 is nose swab box and support wiring layout.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described.According to detector of the present invention and process flow, provide following examples:
1, in crowd to be checked, gather nose swab sample, leave in special nose swab sampling box;
2, start vacuum pump, vacuumize 1 minute;
3, setting servo motor parameter, rotation direction is counterclockwise, starts to do the cyclic process often turning 72 ° of pause 3min test durations;
4, in test duration 3min, undertaken detecting and depositing spectrum by the detector be placed in above vacuum chamber;
5, in rotation process, forward pneumatic sound suppressor vent hole place to, E district automatic deflation when E separates plate;
5, after last sample enters test chamber in sample box, change new sample box, continuous print detection can be realized like this.
6, detection system and servomotor are controlled by computing machine, and its parameter can set according to the actual requirements.
Above-described embodiment, only for technical conceive of the present invention and feature are described, its object is to person skilled in the art can be understood content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (8)
1., for having a human nasal swab alpha ray dosage fast detector for automatic sample-changing function, it is characterized in that:
The structural design of vacuum chamber and the realization of detection;
Auto injection and vary device;
Be applicable to alpha activity and detect nose swab box.
2. the structural design of vacuum chamber according to claim 1, is characterized in that, comprises fixing shell and rotary inner sample support.
3. sample holder according to claim 2, is characterized in that, have 5 chambers of decile, there is the circular hole with keyway at center, for connecting servomotor; Circumference and middle spoke-like dividing plate upper and lower surface have draw-in groove, for installing special eraser sealing gasket.
4. shell according to claim 2, is characterized in that, upper surface has the rectangular opening one for sample introduction, and direction is along disc radius direction; There is the circular port one for installing detector; Lower surface has the rectangular opening one for going out sample, and the circular port two for vacuumizing, and for destroying the circular hole being connected with pneumatic sound suppressor one of vacuum; Inner surface of outer cover flat smooth, between itself and support, sealing is good.
5. auto injection according to claim 1 and vary mode, its feature one is, utilizes Action of Gravity Field that measuring samples is loaded specimen holder from sample box and sample is finished in inspection and loads sample collection box by specimen holder; Its feature two is, each for specimen holder according to claim 3 chamber can be rotated to injection port according to claim 4 successively by the rotation of specimen holder, vacuumize hole, detector hole, the position such as vacuum deflation hole and outlet, thus realize sample introduction, vacuumize, detect, destroy vacuum and go out the functions such as sample.
6. vacuum according to claim 1 is set up, and it is characterized in that, forvacuum chamber is connected with mechanical pump by a threeway, the threeway other end is connected by fast vacuum protective valve and detection chambers; When forvacuum Chamber vacuum is poor, fast vacuum protective valve is closed, to keep sensing chamber's vacuum.
7. nose swab box according to claim 1, is characterized in that, inside has the nose swab support that shape follows draw-in groove supporting, and nose swab does not contact with nose swab box inside surface, and does not contact with each other.
8. detection according to claim 1 and the realization of varying, it is characterized in that, by computer controlled automatic: nose swab arrives and detects position, detection system starts to gather power spectrum, deposit spectrum after collection terminates and by servomotor, specimen holder rotated 72 degree simultaneously, forward to and pick up location by taking out position nose swab in advance and put, start new Spectrum acquisition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410035835.0A CN104808235B (en) | 2014-01-26 | 2014-01-26 | Human body nose swab alpha ray dosage fast detector with automatic sample-changing function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410035835.0A CN104808235B (en) | 2014-01-26 | 2014-01-26 | Human body nose swab alpha ray dosage fast detector with automatic sample-changing function |
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| Publication Number | Publication Date |
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| CN104808235A true CN104808235A (en) | 2015-07-29 |
| CN104808235B CN104808235B (en) | 2018-08-21 |
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| CN201410035835.0A Expired - Fee Related CN104808235B (en) | 2014-01-26 | 2014-01-26 | Human body nose swab alpha ray dosage fast detector with automatic sample-changing function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105549061A (en) * | 2016-03-11 | 2016-05-04 | 成都理工大学 | Nasal swab detection device for alpha radioactive internal contamination |
| CN115251997A (en) * | 2022-06-17 | 2022-11-01 | 无锡市第五人民医院 | Sampling device of new coronavirus nasopharynx swab |
Citations (5)
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| US4695728A (en) * | 1986-02-26 | 1987-09-22 | Gibes Terrence R | Portable radiation contamination detector |
| US6656428B1 (en) * | 1999-08-06 | 2003-12-02 | Thermo Biostar, Inc. | Automated point of care detection system including complete sample processing capabilities |
| CN201624633U (en) * | 2010-01-14 | 2010-11-10 | 西安理工大学 | Handheld pharyngeal observer |
| CN202471984U (en) * | 2012-02-29 | 2012-10-03 | 佛山市质量计量监督检测中心 | Automatic feeding device for radioactivity detection of building materials |
| CN202908747U (en) * | 2012-11-21 | 2013-05-01 | 柳冬梅 | Non-irritant throat swab sampling device |
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2014
- 2014-01-26 CN CN201410035835.0A patent/CN104808235B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4695728A (en) * | 1986-02-26 | 1987-09-22 | Gibes Terrence R | Portable radiation contamination detector |
| US6656428B1 (en) * | 1999-08-06 | 2003-12-02 | Thermo Biostar, Inc. | Automated point of care detection system including complete sample processing capabilities |
| CN201624633U (en) * | 2010-01-14 | 2010-11-10 | 西安理工大学 | Handheld pharyngeal observer |
| CN202471984U (en) * | 2012-02-29 | 2012-10-03 | 佛山市质量计量监督检测中心 | Automatic feeding device for radioactivity detection of building materials |
| CN202908747U (en) * | 2012-11-21 | 2013-05-01 | 柳冬梅 | Non-irritant throat swab sampling device |
Non-Patent Citations (3)
| Title |
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| KUMIKO FUKUTSU ET AL.: "CHARACTERISATION OF NASAL SWAB SAMPLES BY ALPHA SPECTROMETRY", 《RADIATION PROTECTION DOSIMETRY》 * |
| XIANGUO TUO ET AL.: "Alpha Contamination Monitoring Instrument Based on LRAD Technique for Complex Surface Monitoring", 《JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY》 * |
| 龙琼: "用于擦拭样品测量的便携式α谱仪***研制", 《中国优秀硕士学位论文全文数据库 工程科技II辑》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105549061A (en) * | 2016-03-11 | 2016-05-04 | 成都理工大学 | Nasal swab detection device for alpha radioactive internal contamination |
| CN105549061B (en) * | 2016-03-11 | 2018-02-16 | 成都理工大学 | One kind is used for pollution nose swab detection means in alpha activity |
| CN115251997A (en) * | 2022-06-17 | 2022-11-01 | 无锡市第五人民医院 | Sampling device of new coronavirus nasopharynx swab |
| CN115251997B (en) * | 2022-06-17 | 2023-09-19 | 无锡市第五人民医院 | Sampling device of novel coronavirus nasopharyngeal swab |
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| CN104808235B (en) | 2018-08-21 |
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