21 June 2004 Laser security systems
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Proceedings Volume 5449, Eighth International Conference on Laser and Laser Information Technologies; (2004) https://doi.org/10.1117/12.563122
Event: Eighth International Conference on Laser and Laser Information Technologies, 2003, Smolyan, Bulgaria
Abstract
This report presents the development of single-beam barrier laser security system. The system utilizes the near infrared (IR) range λ=(850÷900)nm. The security system consists of several blocks: Transmitter; Receiver; Logical Unit; Indication; Power Supply. There are four individually software programmable security zones Z1 ÷ Z4. The control logic is implemented on a PIC16F84 MCU. The infrared beam is a pulse pack, coded and modulated in the transmitter with frequency of 36 kHz. The receiver demodulates and decodes the beam. The software for the MCU is developed along with the electrical circuits of the security system.
© (2004) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ivan Stanchev Kolev, Ivan Stanchev Kolev, Ivelina Stefanova Stoeva, Ivelina Stefanova Stoeva, } "Laser security systems", Proc. SPIE 5449, Eighth International Conference on Laser and Laser Information Technologies, (21 June 2004); doi: 10.1117/12.563122; https://doi.org/10.1117/12.563122
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