Plc Technologies Essay

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Remote PLC system using GSM network with application to home security system Department of Electrical Engineering, King Saud University, Riyadh, Saudi Arabia Keywords Programmable logic controller, machine automation, GSM, home security, microcontroller. Abstract The focus of this paper is to present a low-cost and simple approach to designing intelligent home system using the concept of mobile-to-machine and machine-to-mobile communication. First, we develop a general purpose electronic circuit design that can control and monitor a variety of home appliances with interface that can be plugged into GSM handset unit. The design based on PLC comprises microcontroller, adaptation circuit, power circuit, and RS232 interface. Then, we develop prototype home security system as an application example of the designed PLC system. The system is completely built and tested and showed perfect operation. A. Alheraish, W. Alomar, and M. Abu-Al-Ela Remote PLC system using GSM network 1 Introduction Global System for Mobile communication (GSM) has been one of the best trustable wireless communication systems that can be accessed and used very easily. It is cost effective either if we consider the price of its transceiver module (a simple cellular phone) or the subscription fees. With the trend of huge growing usage of GSM during the past decade, network services is extended beyond speech communication to so many other custom specified applications, machine automation and machineto-machine communication. This paper designs an intelligent home that can communicate with the user by using a mobile phone over GSM network. The interface and communication between home appliance the controlling circuit is the most important component in automation process. This function is implemented by using a Programmable logic controller (PLC) interfaced to a mobile phone. The user sends GSM

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