This project aims in designing a system which helps to monitoring the transformer’s oil temperature and oil level using sensors. The system automatically breaks the circuit if temperature is above threshold value or if the oil level goes below set limit.   The modules in this project are: Temperature sensor to get the temperature, Ultrasonic sensor is used to detect the oil level of the transformer. Relay module is used to break the circuit in abnormal condition.   The controlling device of the whole system is an Arduino Nano Microcontroller. The microcontroller continuously monitors the temperature and oil level data from sensors will be display on LCD. When the temperature exceeds threshold value or else when the oil level goes below predefine level of the transformer, then the Microcontroller break the circuit through relay and activate the buzzer for alerts. Here relay works as a switch to ON/OFF the circuit. To achieve this task microcontroller is loaded program written in Embedded C language.           The main objectives of the project are:

1. Continuous monitoring temperature and oil level of transformer on LCD.
2. Automatic circuit breaker controlling.
3. Alert in abnormal condition using BUZZER.
4. Visible alerts using LCD display.

          The major building blocks of the project are:  

1. Power Supply.
2. Arduino Nano Microcontrollers.
3. Temperature sensors.
4. Ultrasonic sensors.
5. LCD display.
6. Buzzer.
7. Relay.
8. LED indicators.

          Software’s used:

1. Embedded C programming.
2. Arduino IDE for dumping code into Micro controller.
3. Express SCH for Circuit design.

          Regulated Power Supply:

                       

Block Diagram:          

video: