Temperature Flow Controlled Fan

Sarah, Mohamad Ali (2007) Temperature Flow Controlled Fan. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

The temperature flow controlled fan is an automated fan, controlled by a temperature sensor, using fully hardware design. The heart of this project consists of the temperature sensor circuit witch uses variable resistors to let out signals to comparator functions. These variable resistors are collaborated and adjusted to give specific signals to the comparators that will contact the relays, and then will operate the fans speed. When heat is applied to the temperature sensor, this will determine the fan automatically increasing or decreasing in speed according to the four speed levels of a normal fan that are set to different temperature ranges of a room. The temperature sensor will typically sense the temperature, and the variable resistor set in that temperature range will trigger the comparators. In this case, certain resistance will be set according to the measured range of temperature. The fan adjusts to four different speed levels, so one does not need to switch to a different speed level manually. Electricity is also saved.

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