Chemical sampling and multi-function detection methods and apparatus
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G01N-001/24
출원번호
US-0192334
(2011-07-27)
등록번호
US-8756975
(2014-06-24)
발명자
/ 주소
Wu, Ching
출원인 / 주소
Excellims Corporation
인용정보
피인용 횟수 :
5인용 특허 :
29
초록▼
This invention describes a sample collection method that could release and collect residues of explosives and other chemicals from a surface; the described method is implemented into a compact detection system that can be used as a “wand” for screening chemicals residues on human body. The wand conf
This invention describes a sample collection method that could release and collect residues of explosives and other chemicals from a surface; the described method is implemented into a compact detection system that can be used as a “wand” for screening chemicals residues on human body. The wand configuration includes multiple functionalities for contrabands detection. The invention further describes a desorption method that can control chemical fragmentation pathway during desorption. The invention describes a combined detection device that detects trace chemicals and metal at the same time.
대표청구항▼
1. A non-contact interrogating apparatus comprising, a) a front sampling region;b) more than one pair of facing air jet ports arranged in a linear array; the air jet ports form a sheet-like air flow that releases and/or carries some sample from a targeted surface;c) at least some sample is collected
1. A non-contact interrogating apparatus comprising, a) a front sampling region;b) more than one pair of facing air jet ports arranged in a linear array; the air jet ports form a sheet-like air flow that releases and/or carries some sample from a targeted surface;c) at least some sample is collected at a intake port that is located between the sheet-like impinging air flow; andd) a critical angle of the sheet-like air flow, which determines the standoff distance during sampling, such that the sheet-like air flow reaches the targeted surface before passing the midpoint of the pair of facing air jet ports arranged in a linear array, administering the sheet-like air flow and return air flow such that chemicals vapors and/or particles surrounded by the front sampling region, sheet-like air flows, and the targeted surface are suctioned with a return air flow into the intake port. 2. The non-contact interrogating apparatus of claim 1, wherein the critical angle is substantially perpendicular to substantially parallel between the sheet-like impinging air flow and the targeted surface. 3. The non-contact interrogating apparatus of claim 1, further comprises an onboard detector for analyzing a collected sample. 4. The non-contact interrogating apparatus of claim 3, wherein the onboard detector is an ion mobility based detector. 5. The non-contact interrogating apparatus of claim 1, further comprises a doping substance added to at least one of the pair of facing sheet-like impinging air flows to assist the particle release from the targeted surface. 6. The non-contact interrogating apparatus of claim 1, further comprises a sample collector. 7. The non-contact interrogating apparatus of claim 6, wherein the sample collector has a preconcentrator. 8. The non-contact interrogating apparatus of claim 6, wherein the sample collector has a heated filter. 9. The non-contact interrogating apparatus of claim 6, wherein the sample collector has a movable screen. 10. A dynamic inspection method, comprising: a) moving an interrogating apparatus in a non-contacting sweeping motion whereby one or more sweeps along a targeted surface area are performed for the targeted surface area;b) dislodging and collecting particles from the targeted surface area from a standoff distance controlled by the critical angle of the sheet-like air flow, such that the sheet-like air flow reaches the targeted surface before passing the midpoint of the pair of facing air jet ports arranged in a linear array, administering the sheet-like air flow and return air flow such that chemicals vapors and/or particles surrounded by the front sampling region, sheet-like air flows, and the targeted surface are suctioned with a return air flow into the intake port, andc) detecting particles with a detector. 11. The dynamic inspection method as claimed in claim 10, wherein the interrogating apparatus is controlled by an automated fashion. 12. The dynamic inspection method as claimed in claim 10, wherein the pair of facing airflows are either continuous or pulsed. 13. The dynamic inspection method as claimed in claim 10, wherein the detection is performed in real time with an onboard detector. 14. The dynamic inspection method as claimed in claim 10, which further comprises, preconcentrating particles on a sample collector. 15. The dynamic inspection method as claimed in claim 14, which further comprises, desorbing the particles from the sample collector into the detector. 16. The dynamic inspection method as claimed in claim 14, which further comprises, manually transferring the sample collector into a stand alone detector. 17. The dynamic inspection method as claimed in claim 10, which further comprises, mixing at least one doping substance into the pair of facing air flows. 18. The dynamic inspection method as claimed in claim 10, which further comprises, heating the pair of facing air flows. 19. The dynamic inspection method as claimed in claim 10, which further comprises, detecting a plurality of threats simultaneously. 20. The dynamic inspection method as claimed in claim 10, which further comprises, identifying a threats location on an object.
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이 특허에 인용된 특허 (29)
Boyle,Paul; Ruiz Alonso,David; Koehl,Andrew; Rush,Martyn; Parris,Russell; Wilks,Ashley, 3D miniature preconcentrator and inlet sample heater.
Daniel J. Rader ; John R. Torczynski ; Karl Wally ; John E. Brockmann, Apparatus to collect, classify, concentrate, and characterize gas-borne particles.
Das Yogadish,CAX ; Russell Kevin,CAX ; Kircanski Nenad,CAX ; Goldenberg Andrew,CAX, Cantilevered manipulator for autonomous non-contact scanning of natural surfaces for the deployment of landmine detectors.
Carroll Alf L. (Cohasset MA) Miskolczy Gabor (Carlisle MA) Fraim Freeman W. (Lexington MA) Achter Eugene K. (Lexington MA) Lieb David P. (Lexington MA), Hand-held sample gun for vapor collection.
Achter Eugene K. (Lexington MA) Carroll Alf L. (Cohasset MA) Rounbehler David P. (Bedford MA) Fine David H. (Sudbury MA) Fraim Freeman W. (Lexington MA), Vapor collector/desorber with metallic ribbon.
Rounbehler David P. (Bedford MA) Achter Eugene K. (Lexington MA) Lieb David P. (Lexington MA) Fine David H. (Sudbury MA) Hainsworth Eugenie (Arlington MA) Carroll Alf L. (Cohasset MA) Wendell Gregory, Vapor collector/desorber with non-conductive tube bundle.
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