Application of Microcontroller with Cellular Network to Monitor the Temperature Inside the Telecommunication Exchange Building

摘要

The purpose of this research is to monitor the temperature in the Telecommunication exchange building so as the send a warning message to a cell phone. The research is to measure the temperature in the Telecommunication exchange buildings. That are not mended by anyone and located far from telephone junction head quarter. This research is divided into 3 parts. Firstly, measuring the temperature inside the Telecommunication exchange building and displaying its result on a LED panel. Secondly, processing the temperature measured and analyzing with the Arduino Board. Thirdly, sending of warning messages is done in the following 3 scenarios. When the temperature is lower than 18 Celsius, the system will send a message saying “Temperature over cool”. When the temperature is over 30 Celsius, the system will send a message saying “Temperature over level 1”. When the temperature is over 35 Celsius, the system will send a message saying “Temperature over level 2” every 30 minutes. The message will be sent using the frequency of 900 MHz to the cell phone of the official overseeing the Telecommunication exchange buildings, so that he can rectify the problem in time before the temperature exceeds the specification on the devices. From the field testing of this system in 5 Telecommunication exchange buildings, the accuracy of the warning message is about 94 percentage.