Design of a UPS outlet system controlled by PDAs and GSM cellular phones

In this paper we describe a remotely controllable UPS outlet system for home power management that we have developed. The CUPSO (controllable UPS outlet) integrates multiple AC power sockets, a UPS and a low-power microcontroller into a power outlet to switch the power of the sockets On/Off, to protect a sudden loss of the AC power supply and to measure the power consumption of plugged-in electric home appliances. Using Bluetooth, our wireless system can control the home electric appliances at home without new wiring. The remote control also provides the user with the ability to control the power On/Off of home appliances through the Internet, and the GSM channel linked to the home server is able to receive the SMS (short message service) for the use of the power management of the home electric appliances power On/Off anytime and anywhere.