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WO2023115847A1 - Système de détection de vapeur d'eau et de particules à l'état de trace - Google Patents

Système de détection de vapeur d'eau et de particules à l'état de trace Download PDF

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Publication number
WO2023115847A1
WO2023115847A1 PCT/CN2022/099349 CN2022099349W WO2023115847A1 WO 2023115847 A1 WO2023115847 A1 WO 2023115847A1 CN 2022099349 W CN2022099349 W CN 2022099349W WO 2023115847 A1 WO2023115847 A1 WO 2023115847A1
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WO
WIPO (PCT)
Prior art keywords
target gas
sampling
detection system
trace particle
target
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.)
Ceased
Application number
PCT/CN2022/099349
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English (en)
Chinese (zh)
Inventor
陈昶卓
包云肽
李元景
肖翼
张舜生
王迪
刘亚运
李璐璐
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SUZHOU WEIMU INTELLIGENT SYSTEM Co Ltd
Nuctech Co Ltd
Original Assignee
SUZHOU WEIMU INTELLIGENT SYSTEM Co Ltd
Nuctech Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SUZHOU WEIMU INTELLIGENT SYSTEM Co Ltd, Nuctech Co Ltd filed Critical SUZHOU WEIMU INTELLIGENT SYSTEM Co Ltd
Publication of WO2023115847A1 publication Critical patent/WO2023115847A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/40—Concentrating samples
    • G01N1/4022—Concentrating samples by thermal techniques; Phase changes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/40—Concentrating samples
    • G01N1/405—Concentrating samples by adsorption or absorption
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/44—Sample treatment involving radiation, e.g. heat

Definitions

  • At least one embodiment of the present disclosure relates to a security inspection system, in particular to a trace particle and vapor detection system for security inspection.
  • the main purpose of the present disclosure is to provide a trace particle and vapor detection system, in order to at least partially solve at least one technical problem mentioned above and other aspects.
  • a trace particle and vapor detection system including:
  • the first sampling unit is adapted to vaporize the test target adsorbed on the sampling carrier to form a first target gas
  • the second sampling unit is suitable for enriching the second target gas
  • the detection unit is suitable for detecting and analyzing the first target gas and the enriched second target gas.
  • the first sampling unit includes:
  • the first injection port is suitable for receiving the sampling carrier
  • the thermal desorber is suitable for heating the sampling carrier to vaporize the test target to form the first target gas.
  • the second sampling unit includes:
  • the second sampling port is suitable for receiving the second target gas
  • the enricher is in controllable communication with the second injection port, and is suitable for enriching the second target gas
  • a conduit in controllable communication with the aspirator inlet, adapted to deliver a second target gas.
  • the second sampling unit further includes a sampling hose, which is adapted to penetrate deeply into the target to be detected and deliver the second target gas to the second sampling port.
  • a first electromagnetic valve is provided between the second sample inlet and the enricher.
  • a second solenoid valve is provided between the second sample inlet and the pipeline.
  • one of the first solenoid valve and the second solenoid valve is turned on.
  • the enricher includes a plurality of enrichment pipes, and each enrichment pipe is provided with an adsorption medium and a heating part; the adsorption medium is suitable for adsorbing the second target gas, so as to enrich the second target gas,
  • the heating part is suitable for heating the adsorption medium to detach the second target gas adsorbed on the adsorption medium.
  • the second sample inlet when the first electromagnetic valve is turned on, can be controllably connected to a target enrichment pipeline among the plurality of enrichment pipelines.
  • the detection unit includes: a detector, adapted to detect the first target gas and the enriched second target gas, an air pump is arranged inside the detector, and the air pump is suitable for driving the second gas inlet to adsorb Second target gas.
  • the detection unit further includes: a first semipermeable membrane disposed between the thermal desorber and the detector, and suitable for selectively filtering the first target gas.
  • the detection unit further includes: a second semipermeable membrane disposed between the enricher and the detector, and adapted to selectively filter the second target gas.
  • the trace particle and vapor detection system provided by the embodiments of the present disclosure, by using the first sampling unit, the test target on the manual hand-held sampling carrier can be processed, and then the detection unit can be used to detect the test target, and by using the second The sampling unit enriches the second target gas to realize the sampling of the second target gas (this sampling process is also called inhalation gas sampling), and then uses the detection unit to detect the second target gas, and the sampling of the second target gas
  • this sampling process is also called inhalation gas sampling
  • the trace particle and vapor detection system provided by the embodiments of the present disclosure can simultaneously support inhalation gas sampling, detection of inhalation gas sampling samples, and detection of test targets of manual hand-held sampling carriers.
  • FIG. 1 is a structural block diagram of a detection system according to an embodiment of the present disclosure.
  • a trace particle and vapor detection system comprising:
  • the first sampling unit is adapted to vaporize the test target adsorbed on the sampling carrier to form a first target gas
  • the second sampling unit is suitable for enriching the second target gas
  • the detection unit is suitable for detecting the first target gas and the enriched second target gas.
  • Fig. 1 is a structural block diagram of a detection system according to an embodiment of the present disclosure.
  • a detection system including: a first sampling unit 1 , a second sampling unit 2 , and a detection unit 3 .
  • the first sampling unit 1 (ie, the particle sampling subsystem) is adapted to vaporize the test target adsorbed on the sampling carrier (not shown in the figure) to form the first target gas.
  • the sampling carrier can be a wipe paper, and the test target on the sampling carrier can be a target particle. Therefore, in the first sampling unit 1, the target particle can be placed and processed.
  • the second sampling unit 2 (ie, the gas sampling subsystem) is suitable for enriching the second target gas.
  • the detection unit 3 (that is, the detection subsystem) is suitable for detecting the first target gas and the enriched second target gas, that is, it can detect the target particles and the second target gas.
  • the first sampling unit 1 can vaporize the target particles adsorbed on the sampling carrier (such as a swab), it can support the traditional swab swabbing sampling and perform rapid heating extraction on the swab sample.
  • the sampling carrier such as a swab
  • the detection system supports synchronous detection, that is, the first sampling unit 1 and the second sampling unit 2 are turned on at the same time, and the target particles and the second target gas are detected at the same time in the same detection, or they can be turned on separately
  • the first sampling unit 1 or the second sampling unit 2 detects the target particles or the second target gas.
  • the first sampling unit 1 includes: a first sample inlet (swab paper inlet) 11, adapted to receive the sample carrier; a thermal desorber 12, adapted to heat the sample carrier, to The test target is vaporized to form a first target gas.
  • the second sampling unit 2 includes a second sampling port (a suction sampling port) 21 , a concentrator 22 , and a pipeline 23 .
  • the second sample inlet 21 is suitable for receiving the second target gas.
  • the enricher 22 is in controllable communication with the second sample inlet, and is suitable for enriching the second target gas.
  • the pipeline 23 is in controllable communication with the suction inlet and is suitable for delivering the second target gas.
  • an air pump is arranged inside the detector 33 of the detection unit, and the air pump is adapted to drive the second sample inlet 21 and is adapted to receive the second target gas.
  • the concentrator 22 includes a plurality of enrichment pipes, and each enrichment pipe is provided with an adsorption medium (not shown in the figure) and a heating part (not shown in the figure); the adsorption medium is suitable for The second target gas is adsorbed to enrich the second target gas, and the heating unit is adapted to heat the adsorption medium to detach the second target gas adsorbed on the adsorption medium.
  • the gas molecules produced by the low-saturated vapor pressure and non-volatile substances are "pre-concentrated" on the adsorption material in the enricher. After the set enrichment time, the high temperature generated by the heating part is used to absorb The medium is heated rapidly to obtain the second target gas with a higher concentration.
  • a first solenoid valve is provided between the second sample inlet 21 and the enricher 22 .
  • a second solenoid valve is provided between the second sample inlet 21 and the pipeline 23 .
  • One of the first solenoid valve and the second solenoid valve is turned on.
  • a first solenoid valve is provided between the second sample inlet 21 and the enricher 22, and a second solenoid valve is provided between the second sample inlet 21 and the pipeline 23, so that the enricher A pneumatic reversing mechanism is formed between the collector 22 and the pipeline 23, and the setting of the pneumatic reversing mechanism can support the detection of substances with different high and low saturated vapor pressures.
  • first open the second electromagnetic valve use the detector 33 of the detection unit to drive the second sample inlet 21 to receive the second target gas, and the second target gas enters the pipeline 23 from the second sample inlet 21 to complete the saturated steam Sampling of high pressure substances.
  • the second target gas enters the enricher 22 from the second sample inlet 21 and is enriched enriched in the device 22 to obtain the second target gas with higher concentration, and this process can complete the sampling of substances with low saturated vapor pressure.
  • the second sample inlet when the first electromagnetic valve is turned on, can be controllably connected to a target enrichment pipeline among the plurality of enrichment pipelines. Since the concentrator can contain multiple channels, the channels can be used in turn by switching, and the channels that are not in use can be restored to the service state through high-temperature cleaning, reducing the cleaning time of the system.
  • the second sampling unit further includes a sampling hose (not shown in the figure), which is adapted to penetrate deep into the target to be detected, and deliver the second target gas to the second sampling port twenty one.
  • the sampling hose is suitable for penetrating deep into the target to be detected (such as a container, cargo box, suitcase, etc.) to obtain the target gas in the target.
  • the length of the sampling hose is adjustable, so it can go deep into the target to be tested at a long distance.
  • the sampling hose can bypass the physical structure and penetrate deep into the target to be detected.
  • the detector 33 is adapted to detect the first target gas and the enriched second target gas.
  • the detection unit further includes a first semipermeable membrane 31 disposed between the thermal desorber 12 and the detector 33 , suitable for selectively filtering the first target gas.
  • the detection unit further includes a second semipermeable membrane 32 disposed between the concentrator 22 and the detector 33 , adapted to selectively filter the second target gas.
  • the detector 33 includes an ion mobility spectrometer, a gas chromatography-ion mobility spectrometer, a small mass spectrometer, an asymmetric field ion mobility spectrometer, a gas chromatography-ion mobility spectrometer, an electrochemical sensor array, At least one of a photoacoustic spectrum sensor, a QCL infrared spectroscopy system, a fluorescent polymer sensor, and a quartz crystal microbalance detector.
  • the detection system of the embodiment of the present disclosure it is difficult for the relevant detection system to perform one-time inspection on the larger air cargo box, the truck compartment and the container with many items stored inside without opening the package of the goods.
  • the detection system of the embodiment of the present disclosure is equipped with a sampling hose in the second sampling unit, which can adapt to the inspection site, and can bypass obstacles or inspect items hidden inside the packaging without completely opening the packaging.
  • the detection system of the embodiments of the present disclosure since it can simultaneously support the detection of gas sampling samples after gas sampling and the detection of manual hand-held sampling carriers, compared with the traditional method of sampling only using sampling wipes, The application cost is lower, which greatly reduces the application cost of the whole life cycle of the security inspection equipment. The same operator can inspect multiple items and improve the inspection efficiency.
  • the detection system of the embodiment of the present disclosure by adding the enricher 22 for pre-concentration, the successful detection of low-volatility substances with low saturated vapor pressure is realized. Therefore, the detection system of the embodiment of the present disclosure has high sensitivity.
  • the detection system of the embodiments of the present disclosure can detect explosives, and can continuously enhance the inspection capability of the system by expanding the feature database to add drugs, toxic and harmful gases, explosive precursors, precursor chemicals and other contraband.
  • the detection system according to the embodiments of the present disclosure has the potential to be integrated into automated unmanned equipment such as drones, unmanned vehicles, and robots.
  • the detection system according to the embodiments of the present disclosure is mainly used in the field of security inspection, especially for baggage and article scanning in airports, customs, logistics and other fields, such as passenger baggage inspection and air cargo inspection in civil aviation airports. It can also be extended to food, chemical, pharmaceutical, biological, semiconductor, electromechanical equipment manufacturing and other industrial fields to detect trace chemical substances of concern in this field.

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

Un système de détection de vapeur d'eau et de particules à l'état de trace comprenant : une première unité d'échantillonnage (1) permettant de gazéifier une cible de test absorbée sur un support d'échantillonnage pour former un premier gaz cible; une seconde unité d'échantillonnage (2) permettant d'enrichir un second gaz cible; et une unité de détection (3) permettant de détecter le premier gaz cible et le second gaz cible enrichi. Le système de détection peut détecter simultanément un échantillon d'échantillonnage de gaz de type à aspiration et un échantillon échantillonné par un support d'échantillonnage portatif manuel.
PCT/CN2022/099349 2021-12-24 2022-06-17 Système de détection de vapeur d'eau et de particules à l'état de trace Ceased WO2023115847A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202111597080.XA CN114383925A (zh) 2021-12-24 2021-12-24 痕量微粒及蒸汽探测系统
CN202111597080.X 2021-12-24

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WO2023115847A1 true WO2023115847A1 (fr) 2023-06-29

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Families Citing this family (2)

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CN114383925A (zh) * 2021-12-24 2022-04-22 同方威视技术股份有限公司 痕量微粒及蒸汽探测系统
CN119534052B (zh) * 2024-12-23 2025-12-02 中国兵器装备集团自动化研究所有限公司 一种基于静电富集的气溶胶采集装置

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US7299710B2 (en) * 2005-08-11 2007-11-27 Syagen Technology Hand-held trace vapor/particle sampling system
CN103018313A (zh) * 2011-09-20 2013-04-03 中国科学院电子学研究所 离子迁移率谱仪半透膜预富集进样方法及装置
CN105738543A (zh) * 2016-03-21 2016-07-06 苏州微木智能系统有限公司 一种安检装置及安检检票一体机
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