Portable explosive material and narcotic drug detector

An explosive and portable technology, applied in the field of fluorescence quenching effect of polymer materials, can solve the problems of complex system, large volume, low sensitivity and high cost

Inactive Publication Date: 2014-06-11
武汉鹰飞拓光电子股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] (1) Low sensitivity;
[0004] (2) The sys

Method used

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  • Portable explosive material and narcotic drug detector
  • Portable explosive material and narcotic drug detector
  • Portable explosive material and narcotic drug detector

Examples

Experimental program
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Embodiment Construction

[0015] The first implementation is as figure 1 As shown, the door 119 of the small box is opened, the suspicious substance wiped with the test paper 110 is placed on the aluminum foil 120, and the battery 113 is used to heat the resistance wire under the aluminum foil (for example, tens of degrees) to make the hard-to-volatile explosives (such as RDX) , PETN, black powder) volatilize a small amount of steam (PPT level), close the small door 119, so that the steam is pumped into the capillary 105 by the air pump 114, the inner wall of the capillary is coated with synthetic polymer material, the light 101 of the LED is covered by the lens 102, After 104 is collimated, it is incident on the polymer material on the inner wall of the capillary through the short-pass filter 103 to produce fluorescence. The fluorescence will propagate along the wall of the capillary due to the waveguide effect. 109 receives the photodetector 110, and when the explosive vapor passes through the capillar...

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Abstract

The invention relates to fluorescence quenching effect of a high polymer material, and discloses a portable explosive material and narcotic drug detector and two design schemes thereof. The portable explosive material and narcotic drug detector comprises a sampling and heating system, an LED (Light-Emitting Diode) light source, a high polymer coating capillary tube, an optical system, a receiving system and an information processing system which are connected in sequence; the wavelength of wave emitted from the LED light source ranges from 400-420nm; LED light and fluorescent light are split by 90 degrees through the optical system; the receiving system adopts a long-pass filter and a photodiode with the response wavelength matched with fluorescent light peak value. The portable explosive material and narcotic drug detector has the characteristics of high sensitivity and resolution ration and small size.

Description

Technical field [0001] The invention relates to the field of fluorescence quenching effects of polymer materials, in particular to a portable explosive and drug detector capable of distinguishing different explosives and drugs. Background technique [0002] The fluorescence quenching effect of polymer materials means that the polymer materials will produce fluorescence under the illumination of LED or other blue-violet light, and when the trace gas (as small as PPT) of drugs (such as heroin) or explosives (such as TNT) passes When the fluorescence disappears, we can use this characteristic of polymer materials to detect explosives and drugs. At present, there are two main patents for polymer explosive detectors in the world: one is Fido (patent number: US7419636), and the other is Emitech (patent number: US2010095743). Fido's device not only needs to preheat and control temperature, but also the structure It is very complicated, and the most fatal disadvantage is that the light ...

Claims

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Application Information

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IPC IPC(8): G01N21/64
Inventor 白燕其他发明人请求不公开姓名
Owner 武汉鹰飞拓光电子股份有限公司
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