WO2009155779A1 - 安全检查门 - Google Patents

安全检查门 Download PDF

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Publication number
WO2009155779A1
WO2009155779A1 PCT/CN2009/000539 CN2009000539W WO2009155779A1 WO 2009155779 A1 WO2009155779 A1 WO 2009155779A1 CN 2009000539 W CN2009000539 W CN 2009000539W WO 2009155779 A1 WO2009155779 A1 WO 2009155779A1
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WO
WIPO (PCT)
Prior art keywords
cabinet
metal
inspection door
security inspection
detection subsystem
Prior art date
Application number
PCT/CN2009/000539
Other languages
English (en)
French (fr)
Inventor
***
陈志强
李元景
林津
张金宇
彭华
张清军
张仲夏
张阳天
殷晓体
宋李卫
Original Assignee
同方威视技术股份有限公司
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 同方威视技术股份有限公司 filed Critical 同方威视技术股份有限公司
Publication of WO2009155779A1 publication Critical patent/WO2009155779A1/zh

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V11/00—Prospecting or detecting by methods combining techniques covered by two or more of main groups G01V1/00 - G01V9/00
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N2001/022—Devices for withdrawing samples sampling for security purposes, e.g. contraband, warfare agents

Definitions

  • the present invention relates to a security inspection door, and more particularly to a security inspection door capable of simultaneously inspecting drugs/explosives, radioactive materials and metal dangerous goods. Background technique
  • IMS drug and explosives detection
  • the patent CN 02289591. 4 proposes a gate type gamma radioactive safety detection device, which adopts directional shielding of the Nal (Tl) scintillator for measuring cesium radioactivity, so that only the side of the scintillator Y radioactivity in a solid angle range can be detected; and multiple Y probes are placed in the door frame on both sides of the door frame to improve the detection efficiency of radioactive materials.
  • Patent US 2006/028494 A1 also proposes a radioactive safety detection gate that utilizes multiple detectors and collimator arrays to achieve simultaneous detection of Y and n.
  • Patent CN1834690 proposes a through-metal detection system, which improves the detection of uneven magnetic field distribution through the double-shot and double-receiver antenna and the corresponding circuit and software, and improves the ability to distinguish metal objects.
  • Patent CN1802675A (W02004/097456) proposes a metal detection with a lightweight structure By setting the heavy duty duty cycle and pulse mode of operation, it can be operated with battery or AC power for a long time.
  • the present invention is directed to a safety inspection apparatus capable of simultaneously inspecting drugs/explosives, radioactive materials, and metal dangerous goods.
  • the invention provides a safety inspection door capable of simultaneously checking drugs/explosives, radioactive materials and metal dangerous goods, including a drug/explosive substance detection subsystem, a radioactive substance detection subsystem and a metal detection subsystem disposed in the cabinet. Electromagnetic radiation shielding is respectively disposed around the three detecting subsystems to isolate the drug/explosive substance detecting subsystem, the radioactive substance detecting subsystem and the metal detecting subsystem from each other.
  • the present invention combines a drug/explosive detection subsystem, a radioactive material detection subsystem, and a metal detection subsystem to form a novel safety inspection door, thereby enabling simultaneous inspection of drugs/explosives, radioactive materials, and metal dangerous goods.
  • pedestrians can complete the inspection of drugs/explosives, special nuclear materials/radioactive materials and prohibited metal appliances at the same time, thereby ensuring the safety of personnel and facilities on important occasions.
  • the present invention also provides electromagnetic radiation shielding around the three detection subsystems, so that the drug/explosive substance detection subsystem, the radioactive substance detection subsystem and the metal detection subsystem are isolated from each other and do not interfere with each other, thereby improving the Reliability and accuracy of the test.
  • Figure 1 is a front view of the security inspection door
  • Figure 2 is a plan view of the security inspection door
  • Figure 3 is a right side view of the security inspection door
  • Figure 4 is a left side view of the security inspection door
  • Figure 5 is a view taken along line A-A of Figure 1;
  • Fig. 6 is a view as seen in the direction of BB in Fig. 1.
  • Figure 1 shows a front view of the security inspection door of the present invention.
  • Figure 2 shows a top view of the security inspection door of the present invention.
  • Figure 3 shows a right side view of the security inspection door of the present invention.
  • Figure 4 shows a left side view of the security inspection door of the present invention.
  • Figure 5 is a view of the present invention taken along line AA of Figure 1;
  • Figure 6 is a view of the present invention taken along line BB of Figure 1.
  • the security inspection door includes a left cabinet 22, a right cabinet 25, and a top cabinet 20, and the left cabinet 22, the right cabinet 25, and the top cabinet 20 form a gate inspection passage 23.
  • a glass door 24 may be provided at the entrance and/or the exit of the portal passage 23, and when the pedestrian enters the passage inspection, the glass door 24 may be closed to isolate the space inside the passage from the outside, thereby preventing surrounding interference and improving Detection accuracy.
  • the left cabinet 22, the right cabinet 25, and the top cabinet 20 are all made of a metal plate, thereby forming an electromagnetic radiation shielding space inside the left cabinet 22, the right cabinet 25, and the top cabinet 20.
  • the drug/explosive detection subsystem, the radioactive substance detection subsystem and the metal detection subsystem of the security inspection door are arranged in the electromagnetic radiation shielding space formed by the above-mentioned cabinet, which can partially prevent the electromagnetic radiation outside the cabinet from the drug / The impact of the explosive detection subsystem, the radioactive material detection subsystem, and the metal detection subsystem.
  • the space for accommodating the drug/explosive detection subsystem, the space for accommodating the radioactive material detection subsystem, and the space for accommodating the metal detection subsystem are isolated from each other, which can partially prevent the drug/explosive detection subsystem and radioactive material detection.
  • the drug/explosive detection subsystem includes: a gas supply device, a set of jet devices disposed in the right cabinet 25, and another set of jets disposed in the left cabinet 22.
  • the device a set of detecting devices disposed in the right cabinet 25, another set of detecting devices disposed in the left cabinet 22, and a fan 1 disposed in the top cabinet 20.
  • the air supply means includes a gas storage tank 18, an air compressor 17, and a gas path 48.
  • FIGS. 3 and 6 show the internal structure of the right cabinet 25, as shown in FIGS. 3 and 6, a set of jet devices in the right cabinet 25 includes an upper limit switch 2, a lifting rail 5, and a jet lifting synchronization.
  • FIGS. 4 and 5 show the internal structure of the left cabinet 22, as shown in FIGS. 4 and 5, another set of jet devices in the left cabinet 22 includes an upper limit switch 26, a lifting rail 28, and a jet lifting device.
  • the timing belt 29, the high speed solenoid valve/rotary motor 30, the jet lift motor 31, and the air nozzle 43 are provided.
  • a group of detecting devices in the right cabinet 25 includes a drug/explosives detector (IMS) 3, a screen heater 9, a screen turntable motor 11, and a screen carousel mechanism. 12. Clean the axial fan 16, the screen 49, the screen 50 and the screen 51.
  • another set of detecting devices in the left cabinet 22 includes a drug/explosives detector (IMS) 55, a screen heater 32, a screen turntable motor 34, and a screen turntable.
  • IMS drug/explosives detector
  • a metal shielding shell is disposed around the air supply device to shield the electromagnetic radiation, and the electromagnetic wave generated by the air compressor 17 is prevented from affecting the radioactive substance detecting subsystem and the metal detecting. Subsystem.
  • a metal shield shell is disposed around the jet device to form an electromagnetic radiation shield, and the electromagnetic wave generated by the solenoid valve 7 is prevented from affecting the radioactive substance detecting subsystem and the metal detecting subsystem. .
  • a metal shielding shell is disposed around the detecting device to form electromagnetic radiation shielding, preventing electromagnetic waves generated by the fans 39 and 40 from affecting the radioactive substance detecting subsystem and metal detection. Subsystem.
  • a metal shield case is disposed around the fan 1 to form an electromagnetic radiation shield to prevent electromagnetic waves generated by the fan 1 from affecting the radioactive substance detecting subsystem and the metal detecting subsystem.
  • a set of jet devices and a group of detecting devices are respectively disposed in the left and right cabinets 22 and 25, but it is also possible to provide only one in the left cabinet 22
  • the group of jet devices and a group of detecting devices may also be provided with only one set of jet devices and a group of detecting devices in the right cabinet 25, and such changes are intended to fall within the scope of the present invention.
  • the jetting means in the left and right cabinets 22 and 25 are movable up and down along the lifting rail 5, thereby driving the air nozzles 43 on the jet to move up and down.
  • each row of air nozzles 43 is provided on the inner side walls of the left and right cabinets 22 and 25, and each row includes two air nozzles 43.
  • High-speed solenoid valve / rotary motor 7 controls the high-pressure pulse airflow from the air nozzle 43.
  • the direction of each row of air nozzles 43 is directed to the center of the inspection passage 23, and the air nozzles 43 are continuously moved from top to bottom along the guide slots on the left cabinet 22 and the right cabinet 25 to eject a pulsed airflow to the inspected pedestrian.
  • one or more rows of air nozzles 43 may be respectively disposed on the inner side walls of the left and right cabinets 22 and 25, and the number of air nozzles 43 per row is not limited to two, which may be One or three or more.
  • the radioactive substance detecting subsystem includes a set of radiation detecting devices 4 disposed in a set of the radiation detecting device 4 and the right cabinet 25 in the left cabinet 22, and a metal shielding shell is disposed around the radiation detecting device 4, thereby Form electromagnetic radiation shielding to prevent the influence of external electromagnetic radiation. It should be noted that it can also be only in the left cabinet 22 A set of radiation detecting means 4 is provided, or only a set of radiation detecting means 4 is provided in the right cabinet 23, and these changes are intended to fall within the scope of the present invention.
  • the radiation detecting device 4 is disposed near the middle position in the height direction of the left cabinet or the right cabinet so that the height of the radiation detecting device 4 substantially corresponds to half of the height of the human body, so that The effective detection area of the radiation detecting device 4 is made to cover the entire pedestrian.
  • the radiation detecting apparatus includes a Y detector and an n detector, and the ⁇ detector and the ⁇ detector are alternately arranged.
  • the metal detecting subsystem includes a set of metal detecting means 45 disposed in the left cabinet 22 - the metal detecting means 45 and the right cabinet 25, in the metal detecting means 45.
  • a metal shield is placed around the shield to form an electromagnetic radiation shield to prevent external electromagnetic radiation.
  • a set of metal detecting devices 45 may be provided only in the left cabinet 22, or only a set of metal detecting devices 45 may be provided in the right cabinet 25, and these changes are intended to fall within the scope of the present invention.
  • signal isolators are respectively provided on the signal lines, power lines, and ground lines of the above three types of detection subsystems in order to prevent signal crosstalk between the three types of detection subsystems.
  • filters, decouplers, and opto-isolators are provided on the signal lines, power lines, and ground lines of the three detection subsystems.
  • the signal lines of the three detection subsystems are spatially separated from each other, and when cross-tracking is necessary, vertical cross-wiring is employed.
  • Indicator light 21 is used to indicate the status of the pedestrian being inspected: In progress (yellow light) / idle (green light) / alarm (red light).
  • the air compressor 17 supplies high-pressure gas
  • the air nozzle 43 is supplied with high-pressure gas through the intake pipe, and the jet air of each group of the air nozzles 43 is controlled by a high-speed solenoid valve/rotary motor 7.
  • the air nozzles 43 are mounted on the air jets, and the jet lift motor 31 drives the jets up and down along the lift rails 28 by means of the jet lift ramps 29 .
  • the touch screen/computer system 27 controls the components such as the jet lift motor 31, the high speed solenoid valve/rotary motor 7, the air compressor 17, the centrifugal fan 40, and the fan 1 through the electrical control panel.
  • the air nozzle 43 is composed of a plurality of, as shown in Figs. 5 and 6, mounted on the air jets in the left cabinet 22 and the right cabinet 25, respectively.
  • the high-pressure pulse gas jet ejected from the air nozzle 43 is controlled by the idle speed solenoid valve/rotary motor 7.
  • Each group of air nozzles 43 is directed toward the center of the inspection passage 23, and the air nozzles 43 are along the left cabinet 22 and the right cabinet 25.
  • the guide groove continuously moves from top to bottom to eject a pulsed airflow, which is blown toward the inspected pedestrian.
  • the fan 1 is mounted in the middle of the top cabinet 20 to generate a downward air flow during operation.
  • the particles blown off the air nozzle 43 from the inspected pedestrian are blown to the lower portion of the inspection passage 23.
  • a collection passage 44 is formed in the lower portion of the left cabinet 22 and the right cabinet 25 on both sides of the inspection passage 23, and the centrifugal fan 40 sucks the particles into the collection passage 44.
  • the ends of the collection passage 44 are provided with screens 49, 52, and the particles blown from the examinee are collected while passing through the sieve.
  • Filters 49, 50, 51, 52 ⁇ 53, 54 are respectively mounted on the screen turntable mechanisms 12, 35, and the screen turntable mechanisms 12, 35 are controlled to rotate by the screen turntable motors 11, 34, each filter being different Work alternately on the station.
  • the filter inspection stations 10 and 33 are composed of filter heaters 9, 32 and drugs, explosives detectors (IMS) 3, 55, which are responsible for detecting the particles adsorbed on the filter screen.
  • the axial cleaning fans 16, 39 are installed on the filter cleaning stations 14, 37, which are responsible for the cleaning of the filter.
  • the glass door (option) 24 is mounted on both sides of the inspection channel 23 and can be optionally installed as needed.
  • the indicator light 21 is displayed idle (green light is on), and the inspected pedestrian enters the designated position of the inspection channel 23 to stand; the system starts to blow, blow, and collect the particles blown from the inspected person;
  • the filter turntable motors 11 and 34 on the filter turntable mechanism 12, 35 are rotated to the filter inspection stations 10, 33 for detection; the filter inspection station
  • the filter heaters 9, 32 of 10, 33 heat the filter screen, and the particles adsorbed on the filter net are vaporized and then inhaled by the drug and explosive detectors 3, 55 for analysis and analysis, and the analysis results are sent to the touch screen/computer system 27 Processed and displayed on the screen.
  • the inspected pedestrian enters the designated position of the inspection channel 23, and the system starts the work before the drug/explosives detection subsystem. After the drug/explosives detection subsystem ends a measurement, the subsystem ends the measurement again. jobs.
  • the gamma and gamma rays are detected by the radioactive substance detector 4, and the detected signals are analyzed.
  • the probe data is ultimately sent to a touch screen/computer system 27 for processing and display. If a radioactive substance is detected, the system will give an alarm signal. 3. How the metal detection subsystem works
  • the metal detector 45 installation position is shown in Figure 2, Figure 5 and Figure 6.
  • the metal detector 45 detects it, and the detection result is sent to the touch screen/computer system 27 for display by communication. If a prohibited metal item is detected, the system will give an alarm signal.
  • the detection sensitivity of the metal detector 45 can be set as required.
  • the combination of the three functional detection subsystems can simultaneously complete the task of checking the drugs, explosives and radioactive materials carried by pedestrians and prohibited metal objects, improving inspection efficiency. While the embodiments of the present invention have been shown and described, the embodiments of the invention may be The appended claims and their equivalents are defined.

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Description

安全检査门 技术领域
本发明涉及一种安全检査门， 尤其涉及一种能够同时检査毒品 /***物、放射性物 质和金属危险品的安全检査门。 背景技术
自 " 911 "事件以来， 反恐成为全球范围的共同话题。 美国、俄罗斯、 英国、埃及、 西 $5牙、 印尼、 印度等国均发生过恐怖事件， 美国为此还发动了二场战争。 *** 利用 "***"袭击成为一种重要的破坏方式， 对老百姓的安全生活和社会的稳定构成 了巨大的威胁。 但是目前市场上流行的针对行人检査的安全门， 一般只能探测磁性金 属， 对非磁性物体无能为力。 因此对***物和毒品， 普通安全门无法识别， 这对安全 检查来说， 无疑是一个重大漏洞。
随着毒品、 ***物探测（IMS )技术的发展， 对行人携带的毒品、 ***物等可疑微 粒检测成为可能。 最近几年， 国外专家对应用 IMS技术的门式行人检查技术进行了很 多研究， 并申请了多项专利。 如: EP1286151A1 , US5915268A1 , US6073499A1 及 US2001049926A1等等。 在这些专利中， 为了便于收集气流， 提出了多种门的结构； 为 了提高收集效率， 有的提出了浓缩思想（如 US6073499A1等）； 为了把人体衣物中携带 可疑微粒吹落下来， 由幵始的用连续气流吹被检査的行人 （如 US2001049926A1 )， 到 又加入喷高压气体的喷头来吹打衣物， 吹气的气流和喷头喷气的方向， 或向上方， 或 向下方， 想尽了各种办法 （如 EP1286151A1 , US5915268A1和 US6073499A1 )。
在检测特殊核物质和放射性物质方面， 专利 CN 02289591. 4提出了一种门式 γ放 射性安全检测装置， 通过对测量 Υ 放射性的 Nal (Tl)闪烁体采取了定向屏蔽， 使得只 有闪烁体一侧某一立体角范围内的 Y 放射性才能被检测到； 并将多个 Y 探头配置在 做成门框状的两侧门柱中， 提高了对放射性物质的探测效率。 专利 US 2006/028494 A1 也提出了一种放射性安全检测门， 应用多个探测器和准直器阵列， 实现了对 Y和 n同 时探测的功能。
在检测金属方面， 专利 CN1834690提出了一种通过式金属探测***， 通过双发双 收式天线和相应的电路、 软件等改善了检测磁场分布不均匀的缺陷， 提高了区分金属 物的能力。 专利 CN1802675A (W02004/097456 ) 提出了一种带有轻便结构的金属探测 器， 通过设置重载负荷循环和脉冲工作模式， 使它能够较长时间利用电池或交流电源 运行。
但由于种种原因， 目前市场上尚未发现能够同时检测毒品 /***物、放射性物质和 金属危险品的检测装置。 发明内容
因此， 本发明旨在提供一种能够同时检査毒品 /***物、放射性物质和金属危险品 的安全检査装置。
本发明提供了一种能够同时检查毒品 /***物、放射性物质和金属危险品的安全检 查门， 包括设置在柜体内的毒品 /***物探测子***、放射性物质探测子***和金属探 测子***， 其中在所述三种探测子***的周围分别设置电磁辐射屏蔽， 以便使毒品 / ***物探测子***、 放射性物质探测子***和金属探测子***之间相互隔离、 互不干 扰。
本发明首次将毒品 /***物探测子***、放射性物质探测子***和金属探测子*** 组合在一起形成一种新颖的安全检査门， 从而能够同时检查毒品 /***物、放射性物质 和金属危险品。 利用本发明， 行人一次检查， 能同时完成对毒品 /***物、 特殊核物质 /放射性物和违禁金属器具的检测， 从而保证重要场合人员和设施的安全。 另外， 本发 明还在三种探测子***的周围分别设置电磁辐射屏蔽， 使得毒品 /***物探测子***、 放射性物质探测子***和金属探测子***之间相互隔离、 互不干扰， 从而提高了检测 的可靠性和准确性。 附图说明
图 1是安全检査门的主视图；
图 2是安全检查门的俯视图；
图 3是安全检査门的右侧视图；
图 4是安全检查门的左侧视图；
图 5是沿图 1中 A-A向观看的视图； 和
图 6是沿图 1中 B-B向观看的视图。 具体实施方式 图 1显示本发明的安全检查门的主视图。图 2显示本发明的安全检查门的俯视图。 图 3显示本发明的安全检查门的右侧视图。图 4显示本发明的安全检查门的左侧视图。 图 5显示本发明的沿图 1中 A-A向观看的视图； 图 6显示本发明的沿图 1中. B-B向观 看的视图。
如图 1所示， 安全检查门包括左柜体 22、右柜体 25和顶柜体 20， 并且左柜体 22、 右柜体 25和顶柜体 20形成门形检查通道 23。 优选地， 可在门形通道 23的入口和 /或 出口处设置玻璃门 24， 当行人进入通道检査时， 可关闭玻璃门 24使通道内的空间与 外界隔离， 这样能够防止周围干扰， 提高检测精度。
在本实施例中， 左柜体 22、 右柜体 25和顶柜体 20都由金属板制成， 从而在左柜 体 22、 右柜体 25和顶柜体 20的内部形成电磁辐射屏蔽空间。 安全检査门的毒品 /爆 炸物探测子***、 放射性物质探测子***和金属探测子***就布置在上述柜体所形成 的电磁辐射屏蔽空间内，这样能够部分防止柜体外部的电磁辐射对毒品 /***物探测子 ***、放射性物质探测子***和金属探测子***的影响。 优选地， 容纳毒品 /***物探 测子***的空间、 容纳放射性物质探测子***的空间和容纳金属探测子***的空间之 间相互隔离， 这样能够部分防止毒品 /***物探测子***、放射性物质探测子***和金 属探测子***之间的电磁辐射影响。 .
如图 2、 图 3和图 4所示， 毒品 /***物探测子***包括： 供气装置、 设置在右柜 体 25中的一组喷气装置、设置在左柜体 22中的另一组喷气装置、设置在右柜体 25中 的一组检测装置、 设置在左柜体 22中的另一组检测装置、 和设置在顶部柜体 20中的 风扇 1。
具体地， 如图 3和图 4所示， 供气装置包括储气罐 18、 空气压缩机 17和气路 48。 具体地， 图 3和图 6显示右柜体 25的内部结构， 如图 3和图 6所示， 右柜体 25 中的一组喷气装置包括上限位开关 2、 升降导轨 5、 喷气装置升降同步带 6、 高速电磁 阔 /旋转电机 7、 喷气装置升降电机 8和喷气嘴 43。
具体地， 图 4和图 5显示左柜体 22的内部结构， 如图 4和图 5所示， 左柜体 22 中的另一组喷气装置包括上限位开关 26、 升降导轨 28、 喷气装置升降同步带 29、 高 速电磁阀 /旋转电机 30、 喷气装置升降电机 31和喷气嘴 43。
具体地， 如图 3和图 4所示， 右柜体 25中的一组检测装置包括毒品 /***物检测 仪 （IMS ) 3、 滤网加热器 9、 滤网转盘电机 11、 滤网转盘机构 12、 清洁轴流风机 16、 滤网 49、 滤网 50和滤网 51。 具体地， 如图 3和图 4所示， 左柜体 22中的另一组检测装置包括毒品 /***物检 测仪 （IMS ) 55、 滤网加热器 32、 滤网转盘电机 34、 滤网转盘机构 35、、 清洁轴流风 机 39和离心风机 40、 滤网 52、 滤网 53和滤网 54。
由于供气装置中存在产生干扰电磁波的空气压缩机 17， 因此在供气装置的周围设 置金属屏蔽壳， 从而形 电磁辐射屏蔽， 防止空气压缩机 17产生的电磁波影响放射性 物质探测子***和金属探测子***。
同样， 由于喷气装置中存在产生干扰电磁波的电磁阀 7， 因此在喷气装置的周围 设置金属屏蔽壳， 从而形成电磁辐射屏蔽， 防止电磁阀 7产生的电磁波影响放射性物 质探测子***和金属探测子***。
同样， 由于检测装置中存在产生干扰电磁波的风机 39、 40， 因此在检测装置的周 围设置金属屏蔽壳， 从而形成电磁辐射屏蔽， 防止风机 39、 40产生的电磁波影响放射 性物质探测子***和金属探测子***。
同样， 由于风扇 1会产生干扰电磁波， 因此在风扇 1的周围设置金属屏蔽壳， 从 而形成电磁辐射屏蔽， 防止风扇 1产生的电磁波影响放射性物质探测子***和金属探 测子***。
需要说明的是， 在本发明的优选实施例中， 左、 右柜体 22和 25中都分别设置了 一组喷气装置和一组检测装置， 但是， 也可以仅在左柜体 22中设置一组喷气装置和一 组检测装置， 也可以仅在右柜体 25中设置一组喷气装置和一组检测装置， 这些变化理 应落入本发明的保护范围内。
如图 3和图 4所示， 左、右柜体 22和 25中的喷气装置可沿升降导轨 5上下移动， 从而带动喷气装置上的喷气嘴 43—起上下移动。
如图 5和图 6所示， 在左、 右柜体 22和 25的内侧壁上分别设置两排喷气嘴 43， 每排包括两个喷气嘴 43。高速电磁阀 /旋转电机 7控制喷气嘴 43喷出的高压脉冲气流。 每排喷气嘴 43的方向指向检查通道 23的中心， 喷气嘴 43沿着左柜体 22和右柜体 25 上的导槽自上而下连续移动喷出脉冲气流， 吹向被检行人。 需要说明的是， 也可以在 左、 右柜体 22和 25的内侧壁上分别设置一排或三排以上的喷气嘴 43， 而且每排喷气 嘴 43的数量也不限于两个， 其可以为 一个或三个以上。
如图 3所示， 放射性物质探测子***包括设置在左柜体 22中一套射线探测装置 4 和右柜体 25中的一套射线探测装置 4， 射线探测装置 4的周围设置金属屏蔽壳从而形 成电磁辐射屏蔽， 防止外界电磁辐射的影响。 需要说明的是， 也可以仅在左柜体 22中 设置一套射线探测装置 4, 或仅在右柜体 23中设置一套射线探测装置 4， 这些变化理 应落入本发明的保护范围内。
进一步地， 如图 3所示， 射线探测装置 4设置在左柜体或右柜体的高度方向上的 中部位置附近， 以便使射线探测装置 4的设置高度大致对应于人体身高的一半， 这样 能够使射线探测装置 4的有效探测区域覆盖整个行人。
进一步地， 尽管未图示， 射线探测装置包括 Y 探测器和 n探测器， 而且 γ 探测 器和 π探测器交错地布置。
如图 2、 图 5和图 6所示， 金属探测子***包括设置在左柜体 22—套金属探测装 置 45和右柜体 25中的一套金属探测装置 45， 在所述金属探测装置 45的周围设置金 属屏蔽壳从而形成电磁辐射屏蔽， 防止外界电磁辐射的影响。 需要说明的是， 也可以 仅在左柜体 22中设置一套金属探测装置 45， 或仅在右柜体 25中设置一套金属探测装 置 45， 这些变化理应落入本发明的保护范围内。
此外， 尽管未图示， 在以上三种探测子***的信号线、 电源线和地线上分别设置 信号隔离器， 以便防止三种探测子***之间的信号串扰。 具体地， 在三种探测子*** 的信号线、 电源线和地线上设置滤波器、 去耦合器及光电隔离器。 优选地， 三种探测 子***的信号线在空间上相互分离， 在必须交叉走线时， 采用垂直交叉布线。
[发明的工作原理]
1.毒品 /***物探测子***工作原理
如图 1所示， 是毒品、 ***物、 放射性物质和金属物质检査门的外形。 指示灯 21 用于指示被检查行人所处几种状态： 正在检查中（黄灯） /空闲（绿灯） /报警（红灯）。 如图 3所示， 空气压缩机 17提供高压气体， 通过进气管给喷气嘴 43提供高压气体， 每组喷气嘴 43的喷气气流都通过一个高速电磁阀 /旋转电机 7控制。喷气嘴 43安装在 喷气装置上， 由喷气装置升降电机 31通过喷气装置升降同步带 29驱动喷气装置沿着 升降导轨 28上下移动。 触摸屏 /计算机*** 27通过电器控制屏 19对喷气装置升降电 机 31、 高速电磁阀 /旋转电机 7、 空气压缩机 17、 离心风机 40、 风扇 1等部件进行控 制。
喷气嘴 43由若干个组成， 如图 5和图 6所示， 分别安装在左柜体 22和右柜体 25 中的喷气装置上。 喷气嘴 43喷出的高压脉冲气流由髙速电磁阀 /旋转电机 7控制。 每 组喷气嘴 43方向指向检查通道 23的中心，喷气嘴 43沿着左柜体 22和右柜体 25上的 导槽自上而下连续移动喷出脉冲气流， 吹向被检行人。
风扇 1安装在顶柜体 20的中部， 工作时产生向下的气流。 将喷气嘴 43从被检行 人身上吹落的微粒吹至检查通道 23下部。 在检査通道 23两侧的左柜体 22和右柜体 25的下部开有收集通道 44， 离心风机 40将这些微粒吸入收集通道 44。 收集通道 44 的末端安装有滤网 49、 52， 从被检行人身上吹落的微粒通过滤网时被收集。
滤网 49、 50、 51、 52^ 53、 54分别安装在滤网转盘机构 12、 35上， 滤网转盘机 构 12、 35受滤网转盘电机 11、 34控制转动， 每个滤网在不同的工位上交替工作。 滤 网转盘机构 12、 35上分别有 3个工位： 滤网检测工位 10、 33, 收集工位 13、 36和滤 网清洁工位 14、 37。 滤网检测工位 10、 33分别由滤网加热器 9、 32和毒品、 ***物 检测仪 （IMS ) 3、 55组成， 负责对滤网上吸附的微粒进行检测。 滤网清洁工位 14、 37 上分别安装有轴流清洁风机 16、 39， 负责对滤网的清洁工作。
玻璃门 （选件） 24安装在检査通道 23两侧， 可根据实际需要进行选装。
开始检查时， 指示灯 21显示空闲（绿灯亮）， 被检查的行人进入检査通道 23的指 定位置站好； ***开始喷气、 吹气， 并对从被检人员身上吹落的微粒进行收集； 收集 工位 13、 36的滤网在收集工作完成后， 由滤网转盘机构 12、 35上的滤网转盘电机 11、 34转动至滤网检测工位 10、 33进行检测； 滤网检测工位 10、 33的滤网加热器 9、 32 对滤网进行加热， 滤网上吸附的微粒被气化后由毒品、 ***物检测仪 3、 55吸入进行 检测分析， 分析结果送至触摸屏 /计算机*** 27处理， 并显示在屏幕上。 如果发现有 毒品或者***物的痕迹， 则发出警报， 同时指示灯 21报警 （红灯闪烁）； 如果没有发 现可以物， 则本次检查结束， 指示灯 21显示空闲 （绿灯亮）， 等待下一个被检人的进 入。
2.放射性物质探测子***工作原理
被检査的行人进入检查通道 23的指定位置， 本***要先于毒品 /***物探测子系 统开始启动工作， 在毒品 /***物探测子***结束一次测量工作后， 本子***再结束本 次测量工作。
由放射性物质探测器 4检测 γ、 η射线， 并对探测到的信号进行分析。 探测数 据最终送到触摸屏 /计算机*** 27进行处理和显示。 如果检测到有放射性物质， *** 将发出报警信号。 3. 金属探测子***工作原理
金属探测器 45安装位置见图 2、 图 5和图 6。 当被检人员通过检査通道 23时， 金 属探测器 45对其进行探测，探测结果通过通讯方式送至触摸屏 /计算机*** 27进行显 示。 如果检测到有违禁金属物品， ***将发出报警信号。 金属探测器 45的检测灵敏度 可以按要求进行设置。
总之， 三种功能的探测子***组合一起， 可以同时完成检查行人携带的毒品、 爆 炸物和放射性物质以及违禁金属物品的任务， 提高了检査效率。 尽管已经示出和描述了本发明的实施例， 对于本领域的普通技术人员而言， 可以 理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行变化， 本发明的范 围由所附权利要求及其等同物限定。

Claims

权 利 要 求
1. 一种安全检査门， 包括设置在柜体内的毒品 /***物探测子***、 放射性物质 探测子***和金属探测子***， 其中在所述三种探测子***的周围分别设置电磁辐射 屏蔽， 以便使毒品 /***物探测子***、放射性物质探测子***和金属探测子***之间 相互隔离、 互不干扰。
2.根据权利要求 1所述的安全检查门，所述柜体包括限定门形检查通道的左柜体、 右柜体和顶柜体， 所述左柜体、右柜体和顶柜体都由金属制成从而形成电磁辐射屏蔽。
3. 根据权利要求 2所述的安全检査门， 其中所述毒品 /***物探测子***包括： 设置在左柜体和 /或右柜体中的可沿竖直方向上下移动的至少一组喷气装置； 向喷气装置供气的一套供气装置；
设置在左柜体和 /或右柜体中的至少一组检测装置； 和
设置在顶柜体中的风扇，
其中， 在所述供气装置、 喷气装置、 检测装置和风扇的周围分别设置金属屏蔽壳 从而形成电磁辐射屏蔽。
4. 根据权利要求 3所述的安全检查门， 其中在左柜体和右柜体中各设置一组喷气 装置； 并且在左柜体和右柜体中各设置一组检测装置。
5. 根据权利要求 2所述的安全检查门， 其中所述放射性物质探测子***包括设置 在左柜体和 /或右柜体中的至少一套射线探测装置，在所述射线探测装置的周围设置有 金属屏蔽壳从而形成电磁辐射屏蔽。
6. 根据权利要求 5所述的安全检查门， 其中在左柜体和右柜体中各设置一套射线 探测装置； 并且每套射线探测装置包括交错地布置的 Y探测器和 n探测器。
7. 根据权利要求 5或 6所述的安全检查门， 其中所述射线探测装置设置在左柜体 或右柜体的高度方向上的中部位置附近， 以便使所述射线探测装置的设置高度大致对 应于人体身高的一半。
8. 根据权利要求 2所述的安全检查门， 其中所述金属探测子***包括设置在左柜 体和 /或右柜体中的至少一套金属探测装置，在所述金属探测装置的周围设置金属屏蔽 壳从而形成电磁辐射屏蔽。
9. 根据权利要求 8所述的安全检查门， 其中在左柜体和右柜体中各设置一套金属 探测装置。
10. 根据权利要求 1所述的安全检査门， 其中
在所述三种探测子***的信号线、 电源线和地线上分别设置滤波器、 去耦合器及 光电隔离器； 并且
所述三种探测子***的信号线在空间上相互分离， 在必须交叉走线时， 采用垂直 交叉布线。
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