Microcontroller-based encoder and decoder for the RF controlled automatic swinging gate

Date

3-2005

Degree

Bachelor of Science in Applied Physics

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Nesse Grace T. Uriarte

Abstract

This study designed and implemented a microcontroller-based remote access control system for the automated swing gate operator. An encoder and decoder were developed using an ATMEL AT90S2313 microcontroller, which were incorporated to the transmitter and the receiver units, respectively. The encoder sends a code to the receiver, and the decoder translates it upon acquisition, matching it to the predetermined code. If the codes are identical, the gate will automatically open or close. Both units were tested for reliability and response time in the presence and absence of an interference. The system has 100% reliability over pre-determined distances of operation. Using t-test, the response time obtained with or without an interference showed no significant difference, showing that the device can efficiently transmit and receive codes. It also has a high-level of security; generating up to a possible 65,536 code combinations. The transmission of an incorrect code can only be done three times before the system will be disabled and has to be reset by the user. The security of a system can be achieved remotely and it was shown that fabrication of such devices can be done locally in lower costs.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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