Metal safety detection door
A security door and metal technology, which is applied in the direction of sound wave re-radiation, measuring devices, instruments, etc., can solve the problems of low metal detection accuracy, difficulty in properly grasping system detection sensitivity, and easy missed detection of metal objects, etc.
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[0020] Example 1
[0021] As shown in the figure, a metal security inspection door proposed by the present invention includes two side door frames 1 and a mobile detection board 2. The mobile detection board 2 is provided with a probe array composed of a plurality of telescopic metal probes 4, and the mobile detection board 2 A drive mechanism 3 that drives the movement detection plate 2 toward the inner side of the side door frame 1 is provided.
[0022] The telescopic metal probe 4 includes a fixed cabin 41 and a movable cabin 42 coaxially sleeved on the outer surface of the fixed cabin 41. The fixed cabin 41 is provided with a photoelectric detection circuit (not shown) and a metal detection circuit (not shown). The head of the cabin 42 is provided with a metal detection coil 421 connected to a metal detection circuit. The photodetection circuit is connected with a light-emitting diode (not shown in the figure) and a photodiode (not shown in the figure). The side of the fixed ca...
Example Embodiment
[0028] Example 2
[0029] The structure of the security gate provided in this embodiment is the same as that of embodiment 1, except that the telescopic probe array adopts a non-uniform array structure, and the probe array can be arranged according to the wearing condition of the person. The size and arrangement density of the probe are no longer uniform and can be based on actual conditions. The situation is arranged flexibly. For parts of the human back and lower limbs that generally do not have zippers or buttons, a larger probe can be used to obtain thicker detection information; for parts of the human body with zippers or buttons on the front of the chest and abdomen, the detection area is smaller and the arrangement is relatively small. A dense probe to obtain finer detection information. This can balance detection accuracy and system complexity, and reduce system cost. In this specific embodiment, the probe arrays provided on the first mobile detection board and the seco...
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