Security system and method of detecting contraband items
作者： Daniel J Becker , Andrew M Best , Mark N Keene
DOI:
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摘要: A method of detecting contraband about a person is disclosed, and security screening installation system, for use in contraband. The system comprises: detector apparatus which includes at least one magnetic sensor arranged to produce signal indicative an ambient field or gradient over zone sensitivity around the sensor, being large enough contain whole body person, processing circuit receives as input from which, response change produces alert signal; wall other object behind hidden, positioned so that part extends front fit wholly within zone. may alternatively comprise setting up particle chosen location moving people past detector.
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