REAL TIME IMAGING EXPANDABLE PASSIVE MILLIMETER WAVE SYSTEM FOR DETECTING CONCEALED OBJECTS

摘要

A passive concealed object detecting device using millimeter waves to be expanded to a real-time imaging system is provided to obtain signals of each split part of a moving object and to edit the signals into an image by interlocking a sensing position and a sensing part obtained by a straight millimeter wave passive image sensor module and an object movement detecting sensor. In a passive concealed object detecting device using millimeter waves to be expanded to a real-time imaging system, human detecting sensors(10A,10B) detect the human body passing a security gate(20). Millimeter wave passive image sensor modules(12) are aligned in a line and attached on the security gate in a vertical or horizontal direction to obtain millimeter waves emitted from the human body in a vertical direction at regular intervals while persons pass through the security gate. An amplifying unit(13) amplifies DC(Direct Current) voltage outputted from the millimeter wave passive image sensor modules, at the predetermined level. An A/D(Analog To Digital) conversion unit(14) converts analog DC voltage amplified through the amplifying unit, into a digital signal. A movement detecting unit(15) detects the movement of the human body and obtains a millimeter wave signal emitted from a part of the human body passing through a predetermined spot. A digital signal processor(16) interlocks the moving time and position of the object transmitted from the movement detecting unit and a signal obtained by the millimeter wave passive image sensor modules. A monitor(17) outputs a signal processed in the digital signal processor, into an image.