Wireless remote switching system for controlling devices with an algorithm based DTMF detection

Author

Islam, Md Shariful ; Mia, Md Badsha ; Ahmmed, Kazi Tanvir

Author_Institution

Dept. of Appl. Phys. Electron. & Commun. Eng., Univ. of Chittagong, Chittagong, Bangladesh

fYear

2014

fDate

10-12 April 2014

Firstpage

1

Lastpage

6

Abstract

This paper deals with the design and implementation of a system kit which allow the easy use of a mobile phone to control the devices with security. A user can send DTMF tone to the control unit using any GSM mobile phone from anywhere in the world. To access the control unit, the user should send an authentication code (DTMF) along with the desired command to perform on the devices. A mobile phone attached to the microcontroller which can answer automatically works as the DTMF receiver. PIC16F628A microcontroller is programmed and it can control (ON/OFF) eight devices. In addition, we have implemented the DTMF decoder within the microcontroller using an algorithm (Goertzel algorithm). Upon being properly authenticated, the ON/OFF of different devices can be carried out by the microcontroller according to users own accord. The proposed work has been done and verified in real time.

Keywords

cellular radio; control engineering computing; message authentication; microcontrollers; mobile handsets; telecontrol; DTMF decoder; DTMF receiver; DTMF tone; GSM mobile phone; Goertzel algorithm; PIC16F628A microcontroller; algorithm based DTMF detection; authentication code; control unit; device control; dual tone multifrequency; mobile phone; wireless remote switching system; GSM; Home appliances; IIR filters; Microcontrollers; Receivers; DTMF; Devices; GSM; Goertzel algorithm;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Engineering and Information & Communication Technology (ICEEICT), 2014 International Conference on

Conference_Location

Dhaka

Print_ISBN

978-1-4799-4820-8

Type

conf

DOI

10.1109/ICEEICT.2014.6919035

Filename

6919035