DESIGNING AND FABRICATING CIRCUITS TO CONTROL ELECTRICAL DEVICES USING THE MOBILE PHONE

Abstract

Nowadays, mobile phone networks have been widely distributed in all the cities, provinces and regions across the country. Besides the functions of hearing and making phone calls, messaging, accessing the internet, and entertainment…, the mobile phone is also used to remotely control electrical devices in daily life and production activities. In this paper, we studied and designed the control circuit for electrical devices using mobile phones based on the principles of collecting Dual Tone Multi Frequency (DTMF) signal from the mobile phone, then decoding and making the on/off control signal for electrical devices. With this technique, the remote control of electrical devices would be performed via mobile phones by calling and entering control codes. The electric circuit products can be applied on a wide scale in reality to electrical devices in daily life and production activities.