Design and Construction of a Temperature Detection and Monitoring System in a Server Environment

Abstract

This research outlines the development and execution of a system for detecting and monitoring temperature. A system capable of automatically controlling electrical appliances based on ambient thermal conditions. The system is designed to switch OFF electrical appliances when the temperature falls below 20 °C and switch them ON when it exceeds 30.8 °C, ensuring optimal thermal regulation in sensitive environments. The core components include an LM35DZ temperature sensor, flash-type ADC (ICL7107), a signal conditioning circuit, a relay-based switching mechanism, and a 555-timer alarm for real-time alerts. Power is supplied through an AC–DC converter with battery backup, enabling uninterrupted operation. The system was tested across 14 computer centers in Benin metropolis over a 7-day period, with average temperature readings ranging from 23.4 °C to 35.8 °C. The device consistently demonstrated an output voltage accuracy within ±0.11 V of the design values and a current drain of 104 mA, confirming its reliability and responsiveness. Due to its low cost and use of locally sourced components, the system is suitable for deployment in laboratories, server rooms, industrial facilities, and other temperature-sensitive environments.