The design and implementation of a GSM based user-machine interacted refrigerator

Today, many user-machine interacted devices are tailored at the service of people. This paper presents a new low cost smart fridge in which GSM is used as the media of communication between the machine and humans. The proposed solution demonstrates remote monitoring of the fridge (its temperature and food and beverage contents) as well as power cut and return alarms through text messages that are sent to stored number in response to a call or a message request or initiated by the system in case of power cuts. The software is utilizing a conditional looping using C and standard AT commands are used for communication between the microcontroller and the modem.