Intrusion detection system
AssigneeMitsubishi Electric Corporation
InventorShuji Aizawa
Life of this patent
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Abstract
An intrusion detection system includes an intrusion detection device, and a pair of leaky transmission paths including a leaky transmission path of a sending side which is connected to the intrusion detection device and outputs a leaky electric wave on the basis of an output from the intrusion detection device and a leaky transmission path of a receiving side which receives the leaky electric wave output from the leaky transmission path of the sending side, and the intrusion detection device detects that the leaky electric wave received in the leaky transmission path of the receiving side varies to detect the presence or absence of intrusion and an intrusion point.
Claims18
An intrusion detection system comprising:
- an intrusion detection device;
- and
- a pair of leaky transmission paths including a leaky transmission path of a sending side, connected to the intrusion detection device, for emitting a leaky electric wave supplied by the intrusion detection device and a leaky transmission path of a receiving side for receiving the leaky electric wave emitted from the leaky transmission path of the sending side,
- wherein the intrusion detection device detects an instruction and its point from a variation of the leaky electric wave received in the leaky transmission path of the receiving side, and
- wherein an anti-disturbing wave function unit for removing or reducing a disturbing wave intruding into the leaky transmission path of the receiving side is provided, in the intrusion detection device, so that the intrusion detection device determines the instruction and its point using the leaky electric wave processed by the anti-disturbing wave function unit.
An intrusion detection system comprising:
- a pair of leaky transmission paths including a leaky transmission path of a sending side for emitting a leaky electric wave and a leaky transmission path of a receiving side, provided in parallel with the leaky transmission path of the sending side, for receiving the leaky electric wave emitted from the leaky transmission path of the sending side;
- and
- an intrusion detection device including a transmission circuit for outputting a predetermined electric signal to the leaky transmission path of the sending side, a receiving circuit for receiving the leaky electric wave received by the leaky transmission path of the receiving side, and an intrusion detection unit for detecting an its point from a variation of the leaky electric wave received by the receiving circuit,
- wherein the intrusion detection device includes an anti-disturbing wave function unit for processing the signal received by the receiving circuit for removing or reducing a disturbing wave received by the leaky transmission path of the receiving side and for outputting the processed signal to the intrusion detection unit.
Dependencies are inferred from the claim text.