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Our Products
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Laser Light Barrier |
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• Optical Fibre Coupled • Day and Night Operation • Long Distance Coverage • Weather Proof • Single Line as well as Curtain Design • Invisible Laser Light • Encrypted Modulation |
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The drawing shows a layout for a Laser Light Barrier curtain consisting of four protection lines in different heights. The transmitter section of each unit is equipped with a Laser diode emitting in the near infrared spectrum around 800 nm. This radiation is invisible to the human eye. Each Laser Light Barrier is mounted by means of a precision adjustment holder to a stiff pole. Three different kinds of LLB components are necessary to realize a closed perimeter protective ring. A single transmitter (LLB-Tx) starts the cycle, a combination of transmitter and receiver (LLB-Rx/Tx) forms the intermediate barrier and finally a receiver unit (LLB-Rx) closes the chain. The Laser beam is expanded in such a way that no hazardeous radition is emitted. Each emitter or receiver is connected to a junction box providing a serial RS485 interface which is used to read the alarm status by the alarm processor inside the main control room. For larger distances (> 3 km) the bus is connected via optical glass fibre to the control room. The position of each barrier line is displayed by the synoptical panel inside the central control room. In the case of an alarm the area map is zoomed in such a way that the exact place of intrusion is shown. |
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