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Radioactive monitoring system for pedestrians and baggage

A monitoring system and radioactivity technology, which is applied in the baggage radioactivity monitoring system and the pedestrian field, can solve the problem of adding and cost, and achieve the effect of small size, high sensitivity and cost reduction

Inactive Publication Date: 2012-07-18
上海新漫传感科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The huge volume of plastic scintillators also adds a lot of problems and costs to the installation and transportation of pedestrian and luggage radioactive material monitoring systems

Method used

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  • Radioactive monitoring system for pedestrians and baggage
  • Radioactive monitoring system for pedestrians and baggage
  • Radioactive monitoring system for pedestrians and baggage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] In this embodiment, the gamma detection element 131 is a BC-408 plastic scintillator with a size of 1200×300×50 mm, and the gamma photomultiplier tube 114 is a Photonis XP5500 photomultiplier tube. The neutron detection element 142 is Φ50×50mm 6 LiI (Eu) scintillation crystal, neutron photomultiplier tube 144 uses Hamamatsu R6231 photomultiplier tube.

[0050] The plastic panels used as the incident surfaces of the two hollow columns 11 are polyethylene, with a thickness of 5mm; the lead shielding is located on the sides of the gamma detection element 131 except the detection surface, with a thickness of 5mm.

[0051] According to the above-mentioned design scheme, a corresponding pedestrian and luggage radioactive monitoring system is formed, which has high detection sensitivity to neutrons and gammas. The height of the radiation security gate is 2m, the width is 1.5m, and the weight is 130kg.

Embodiment 2

[0053] In this embodiment, the gamma detection element 131 is an EJ-200 plastic scintillator with a size of 1000×200×50 mm, and the gamma photomultiplier tube 114 is a Hamamatsu R1306 photomultiplier tube. The neutron detection element 142 is Φ30×50mm 6 LiI (Eu) scintillation crystal, neutron photomultiplier tube 144 uses Hamamatsu R980 photomultiplier tube.

[0054] The plastic panels used as the incident surfaces of the two hollow columns 11 are ABS, with a thickness of 4mm; the lead shielding is located on the other side of the gamma detection element 131 except the detection surface, with a thickness of 3mm.

[0055] According to the above design scheme, a corresponding pedestrian and luggage radioactive monitoring system is formed, which has high detection sensitivity to neutrons and gammas. The height of the radiation security gate is 2m, the width is 1.4m, and the weight is 110kg.

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PUM

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Abstract

The invention aims to disclose a radioactive monitoring system for pedestrians and baggage, comprising a radioactive security inspection device for monitoring radioactivity, and a remote monitoring and controlling platform for monitoring the radioactive security inspection device, display measurement results, statistically analyzing data and controlling the system; the radioactive security inspection device is in a communication connection with the remote monitoring and controlling platform; the radioactive security inspection device is internally provided with a gamma detector, a neutron detector and an electronics system; and the external side of the neutron detector is coated with a neutron moderator; the radioactive security inspection device is further provided with a display, an alarming lamp and an occupancy sensor. Compared with the prior art, the radioactive monitoring system for pedestrians and baggage sensitively responds to neutron rays and gamma rays; the neutron detector and the gamma detector are relatively small in volume and the whole volume of the instrument is small, so that the cost of installation and transportation is lower; and the radioactive monitoring system for pedestrians and baggage is applicable to security inspection in entrances of important places to realize the purpose of the invention.

Description

technical field [0001] The invention relates to a radioactivity monitoring system, in particular to a pedestrian and luggage radioactivity monitoring system applied to the entrances of various places for radioactivity monitoring of pedestrians and luggage. Background technique [0002] At the entrances of railway stations, airports, customs, docks and other places, for the sake of public safety, radioactive material monitoring systems are usually used to detect pedestrians and luggage, and to monitor whether the objects under inspection carry prohibited nuclear materials and radioactive materials. Most pedestrian and luggage radioactive material monitoring systems use plastic scintillator gamma detectors for gamma radiation monitoring, and neutron detection uses 3 He or 10 BF 3 gas detector. [0003] 3 He and 10 BF 3 , all require a relatively large accommodation area to accommodate gaseous components, occupy a relatively large volume, making its manufacturing and owne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01T3/06G01T1/203
Inventor 赵文渊徐强张燊陈永林李兆龙陈杰丰孙刚严小华陈芳
Owner 上海新漫传感科技有限公司
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