| 摘要 |
A portable handheld security device (10,Fig2) is disclosed comprising a central processing unit 12 in communication with a memory storage device 14, a video display screen 18, at least one camera 38, a transmitting device 26, a receiving device 28, an input device 16 and a power supply. The security device further comprises a means for generating ultra wide band ground penetrating radar 34 and/or millimetre wave radar for identifying objects of interest in closed containers. In addition, the transmitting device 26 and the receiving device 28 are ideally capable of selecting between available communication network signals, determining which network signal is the best signal at a given time, and automatically switching between the available signals to maintain optimum reception and transmission quality. The input device 16 has a first set of user interface controls (22,Fig2) and a second set of user interface controls (24,Fig2) wherein the first and second sets of user interface controls are selectively operable by users either independently or simultaneously. |
