| 摘要 |
A system for protection from intruders has at least two groups of sensors arranged so that the sensors in each of the groups are spaced from one another in a predetermined direction, while the groups of the sensors are spaced from one another in another direction which is substantially transverse to the one direction, the sensors being formed as seismic sensors, a single central control and processing unit arranged to receive unprocessed signals from the seismic sensors, at least one external alarm generating unit including a loudspeaker and a search light, at least one television camera associated with the alarm generating unit, and at least one phone line associated with the control and processing unit, the sensors, the alarm generating unit and the central control and processing unit being connected so that when an intruder is detected by at least one of the sensors of one of the groups of sensors, the alarm generating unit generates a loud voice warning by the loud speaker and generates a light by the search light, while the television camera records an image of the intruder in response to a command from the central control and processing unit which receives the signal from the at least one sensor, and when a sensor of the other of the groups of sensors additionally detects the intruder, the phone line is utilized to inform about a presence of the intruder.
|
