Optical bar code reader for automated microcontroller- based door lock system

Date

10-2004

Degree

Bachelor of Science in Applied Physics

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Zaldy A. Andales

Abstract

The BL-6011-IA Oar code Laser Scanner from Keyence was used as the bar code reader for the automated microcontroller-based door lock system. The BL- 601HA is interfaced through the serial port of the microcontroller, where a +5V passer is supplied to the scanner from the port. The ATmega 16 microcontroller chip was used as the controller of the Bar code Laser scanner. The Bar code Laser scanner communicates with the ATmega 16 chip via the USART pins of ATmega 16. A Liquid Crystal Display (LCD) was also interfaced to the ATmega 16 chip to provide the display for the read bar codes during the testing and programming of the scanner. The ATmega 16's internal 512 bytes Electronically Erasable Programmable Read-Only Memory (EEPROM) is used to store permanently the read bar codes. The RC Servo-motor door lock is also interfaced to the Pulse Width Modulated (PWM) output pin of the ATmega 16 chip. The user needs to register first his/her ID to the administrator by swiping it and typing his/her password before he/she gains access. The RC Servo Motor Door lock grants access to the user by unlocking the bolt if the bar code ID is found in the EEPROM of the system, and a valid password is entered, else he/she needs to register first or access denied is displayed on LCD. The system was successfully tested for functionality on a miniature door.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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