| 摘要 |
PROBLEM TO BE SOLVED: To provide an illegal intrusion prevention system which is simple in structure, low in cost and has an active function capable of preventing the occurrence of crimes by physically blocking a person trying to illegally intrude. SOLUTION: The illegal intrusion prevention system comprises: a detection means for detecting an illegal intruder; and a blocking device for blocking the illegal intruder in response to a detection signal expressing the existence of the illegal intruder from the detection means. The blocking device is provided with: a fluid jet flow generation means; and a fluid supply means for supplying fluid to the jet flow generation means in response to the detection signal. The detection means and the fluid jet flow generation means are arranged in the vicinity of a gate of a site or a building. COPYRIGHT: (C)2005,JPO&NCIPI
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