CN2314370Y - Desk explosive/drug detector - Google Patents
Desk explosive/drug detector Download PDFInfo
- Publication number
- CN2314370Y CN2314370Y CN 97247727 CN97247727U CN2314370Y CN 2314370 Y CN2314370 Y CN 2314370Y CN 97247727 CN97247727 CN 97247727 CN 97247727 U CN97247727 U CN 97247727U CN 2314370 Y CN2314370 Y CN 2314370Y
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- CN
- China
- Prior art keywords
- detector cells
- upper case
- desk
- detector
- detecting device
- 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.)
- Expired - Fee Related
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- Analysing Materials By The Use Of Radiation (AREA)
Abstract
The utility model discloses a desk explosive/drug signal detecting device, comprising a motor, a speed reducer, a conveying belt, a roller, etc. A plurality of gamma ray sources and a plurality of groups of gamma ray scintillation detector are adopted by the utility model. The utility model which has the advantages of high speed of detection of explosive or drug signal and high sensitivity can detect commercial and most known military explosive and can satisfy the requirement of the fast detection of luggage articles of public occasions, such as airports, railway stations, etc.
Description
The utility model relates to a kind of object detection equipment, a kind of equipment that gamma-rays carries out explosive/drugs acquisition of signal of using of more specifically saying so.
The anti-riot safety and the contraband goods inspection in civil aviaton, railway, port, customs, confidential place are very important, oppose terrorist's activity, ensure that public safety is that countries in the world are very paid close attention to, the difficult problem of key target for investment tackling key problem energetically, this problem also is one of China's public safety system " 95 " key research projects.At present, the X ray function that generally use in China airport, railway station detects metal lethal weapon or weapon preferably, but is difficult to detect explosive and drugs, and external detecting system for explosive material sensitivity is lower, the rate of false alarm height, and its technology externally holds in close confidence.
The purpose of this utility model provides a kind of gamma-rays explosive/drugs signal detecting device.
Purpose of the present utility model is achieved through the following technical solutions.
A kind of desk-top explosive/drugs signal detecting device, upper case is arranged, lower case, be transmission channel between upper case and the lower case, motor is installed in the lower case, speed reduction unit, travelling belt, cylinder, castor, low-tension supply is installed, DC-DC converter, high-voltage power module in the upper case, detector cells, each detector cells includes two gamma emitters and source cask flask, and source cask flask front end is equipped with preceding collimating apparatus, and the front end of detector is equipped with the back collimating apparatus, before it is characterized in that the upper case base plate, back two ends are embedded with one group of detector cells respectively, detector is ranked four row altogether, and by upper bracket, lower carriage is fixed detector cells.
Upper case base plate front end is embedded with 14 detector cells, and the rear end is embedded with one or three detector cells.
Upper case base plate front and back ends detector cells centre distance is 400～500mm.
The collimating aperture internal diameter of preceding collimating apparatus is 4～6mm, and the collimating aperture of back collimating apparatus has three grids, the every thick 2mm of grid, and the grid spacing is 6mm, the long 20mm of grid, the exit direction angle of grid and gamma ray projector is 18～20 °.
The detector cells of upper case base plate rear end adopts the high-octane gamma ray projector of towel.The detector cells of front end adopts low-energy gamma ray projector.
The key technical indexes of the present utility model is:
Sequence number project technical indicator
1 detect explosive type commercialization with most of known military explosives
2 sensitivity explosive charges, 150 gram drugs, 50 grams
3 selectivity are hanged down false alarm rate
1/8 1/4 1/2 1 seconds 4 counting response times
5 warning acousto-optics
20 minutes 6 preheating times
During 7 radiation safety sex works, 1 meter ,≤0.1mR/hr
During shutdown, near detector ,≤0.05mR/hr
8 serviceable lifes are more than 10 years
9 supply and ACs, 220V, 50HZ
During the work of 10 environmental baselines, 0～40 ℃ of temperature, relative humidity≤80%
During storage, temperature-5～40 ℃, relative humidity≤90%
Compare by art with external similar, the utlity model has tangible advantage:
The first, get up by surveying material density and effective atomic number knot platform, accuracy improves greatly, and rate of false alarm significantly descends.
The second, report to the police soon, the utility model time of fire alarming can satisfy the needs of the online detection of luggage and articles less than 5 seconds.
Three, highly sensitive, keep explosive 150 grams or drugs 50 grams in the luggage and articles, can report to the police.
Fig. 1 is the utility model structural representation.
Fig. 2 arranges synoptic diagram for the utility model detector cells.
Fig. 3 handles figure for the utility model detectable signal.
Below in conjunction with accompanying drawing,, the utility model is further described by embodiment.
Embodiment:
Referring to Fig. 1, Fig. 2, Fig. 3, the utility model includes upper case 8, lower case 1, is transmission channel 9 between upper case 8 and the lower case 1, and motor 3 is installed in the lower case 1, and speed reduction unit 4, travelling belt 6 and cylinder 2 are equipped with castor 5 on the lower case 1.By support low-tension supply is installed in the upper case 8, DC-DC converter, high-voltage power module, upper bracket 13 also is installed in the upper case 8, lower carriage 14, detector cells is constructed as follows, comprise two gamma emitter scintillation detectors 15, gamma emitter and source cask flask 16 thereof are arranged between the detector 15, the front end of gamma ray projector and source cask flask 16 has the collimating aperture that internal diameter is 4～6mm, collimating apparatus 17 before constituting, the collimating aperture of back collimating apparatus 18 lays respectively at the both sides of source cask flask 16, and detector 15 is plugged on respectively in the garden tube of collimating aperture rear end.Each collimating aperture of back collimating apparatus 18 has three grids 18, every grid 18 thick 2mm, and grid 18 spacings are 6mm, grid 18 long 20mm, the exit direction angle of grid 18 and gamma ray projector is 18～20 °.Photomultiplier in the gamma-rays scintillation detector 15, prime amplifier link to each other with high-pressure modular, DC-DC converter respectively, go out the preposition device output electric signal of setting fire of gamma-rays scintillation detector 15.Have 15 detector cells in the utility model, wherein the front end of upper case 8 base plates 12 is embedded with 14 detector cells formation detector arrays respectively, and its arrangement mode is: detector 15 is adjacent, lines up two row, gamma ray projector and cask flask 16 thereof are adjacent, form a line.The rear end of base plate 12 is embedded with a detector cells, and its arrangement mode is with the detector cells of front end, and the front and back ends of detector cells is fixing by upper bracket 13, lower carriage 14.The centre distance of base plate 12 front and back ends detector cells is 400～500mm.High-octane gamma ray projector during the detector cells of rear end adopts.The detector cells of front end adopts low-energy gamma ray projector.
The electric signal of being exported by the prime amplifier of detector 15 enters the biography system of adopting, make signal gain by amplifier, improve the ratio of doubly making an uproar by screening wave-shaping circuit, adopt upper and lower valve discriminator, obtain certain energy range counting, and the energy counting of not wanting is screened, above-mentioned electronics component is 30 the tunnel, 30 road signals enter microcomputer simultaneously, by microcomputer 30 road count signals are handled, and are set up image.
The travelling speed of travelling belt is 0.3 meter per second.
Claims (5)
1, a kind of desk-top explosive/drugs signal detecting device, upper case is arranged, lower case, be transmission channel between upper case and the lower case, motor is installed in the lower case, speed reduction unit, travelling belt, cylinder, castor, low-tension supply is installed, DC-DC converter, high-voltage power module in the upper case, detector cells, each detector cells includes two gamma emitters and source cask flask, and source cask flask front end is equipped with preceding collimating apparatus, and the front end of detector is equipped with the back collimating apparatus, before it is characterized in that the upper case base plate, back two ends are embedded with one group of detector cells respectively, detector is ranked four row altogether, and by upper bracket, lower carriage is fixed detector cells.
2, desk-top explosive according to claim 1/drugs signal detecting device is characterized in that upper case base plate front end is embedded with 14 detector cells, and the rear end is embedded with one or three detector cells.
3, desk-top explosive according to claim 1/drugs signal detecting device is characterized in that upper case base plate front and back ends detector cells centre distance is 400～500mm.
4, desk-top explosive according to claim 1/drugs signal detecting device, the collimating aperture internal diameter of collimating apparatus is 4～6mm before it is characterized in that, the collimating aperture of back collimating apparatus has three grids, the every thick 2mm of grid, the grid spacing is 6mm, the long 20mm of grid, the exit direction angle of grid and gamma ray projector is 18～20 °.
5, desk-top explosive according to claim 1/drugs signal detecting device, high-octane gamma ray projector during the detector cells that it is characterized in that the upper case base plate rear end adopts, the detector cells of front end adopts low-energy gamma ray projector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97247727 CN2314370Y (en) | 1997-11-07 | 1997-11-07 | Desk explosive/drug detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97247727 CN2314370Y (en) | 1997-11-07 | 1997-11-07 | Desk explosive/drug detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2314370Y true CN2314370Y (en) | 1999-04-14 |
Family
ID=33955134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97247727 Expired - Fee Related CN2314370Y (en) | 1997-11-07 | 1997-11-07 | Desk explosive/drug detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2314370Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006056132A1 (en) * | 2004-11-26 | 2006-06-01 | Tsinghua University | Security inspection method for liquid by radiation source and its device |
-
1997
- 1997-11-07 CN CN 97247727 patent/CN2314370Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006056132A1 (en) * | 2004-11-26 | 2006-06-01 | Tsinghua University | Security inspection method for liquid by radiation source and its device |
| US7386093B2 (en) | 2004-11-26 | 2008-06-10 | Tsinghua University | Method and an apparatus for liquid safety-detection with a radiation source |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |