Smart Load Control

Smart Load Control system. A balanced power management system that saves unnecessary power those are not useful to us. For example running a fan with full speed at a normal temperature, keeping the full brightness of the room lights in the daylight.

We’ve developed a system that saves those unused/unnecessary powers. With our system, if loads of a room run according to the personal needs. For example, if the environment of a room is in normal condition if the temperature is in normal condition, then the fan will run with it’s a normal speed. Fan speed will increase or decrease according to the temperature change. In the same way, the AC will turn on in a high-temperature environment.


Working principle:

In this block, we’ve used Arduino as the controller, 1 IR reflective sensor to measure the RPM of the fan, a temperature sensor to measure the temperature and a LED to measure the light intensity. A 9 volt regulated power supply unit is used to provide the power for the whole circuit.

When the circuit is powered up if any person is present in the room the temperature sensor measure the temperature and sends the data to the controller. The controller analyzes the data if the temperature is greater than the normal room temperature; the controller turns on the fan and keeps the speed as needed.

A light sensor (LDR in this case) measures the light intensity and sends the data to the controller. The controller increases or decreases the brightness of the room light according to the necessary light intensity.

To keep track of the speed of the fan we’ve used RPM counter (made with IR reflective sensor) to measure the RPM of the fan.
And all information showed on an LCD display.

Required Components:

  1. Arduino (as Controller)
  2. LCD (16×2)
  3. IR Reflective sensor
  4. Temperature Sensor (LM35)
  5. Light Sensor (LDR)
  6. DC fan (12v)
  7. LED (12v)
  8. Transistor (2N2222)
  9. Resistor
  10. Power Supply (12v, 2 amps)

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