Real-time monitoring of temperature and humidity has become crucial in cases like server room, incubators of infants in hospitals, coal mines, green houses etc. In all these cases we prefer a temperature cum humidity sensor which ensures user's safety, proper alarming conditions, be simple to use (user friendly), easy calibrations, small and light weight, inexpensive and effective. The aim of this system is to provide an effective alert mechanism when the temperature and humidity of the scenario goes beyond a critical value. The temperature and humidity change in each instant of the surrounding is fed into memory card interfaced withmicrocontroller to store the database. Then if the parameters go beyond a critical value, which can be calibrated initially, an alarm is turned on in the room to give a primary warning to the person in-charge of the locality. If there is no adequate response, an SMS (Short Message Service) notification is given via wireless modem to the responsible person. An emergency call is also made to the responsible person via the wireless modem and a recorded voice is played. This way the alert mechanism reaches effectively to the concerned. © Research India Publications.
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Rajesh Kannan Megalingam, Thulasi, A. A., Pocklassery, G., Jayakrishnan, V., and Mourya, G., “Advanced server room maintenance system”, International Journal of Applied Engineering Research, vol. 7, pp. 1687-1690, 2012.