In this project describes, a low voltage motors are critical assets in today’s industrial applications. This project reviews the applications of microcontroller-based protection and control on low voltage motors less than 600V AC in industrial facilities. It will review the principles of low voltage motor protection (thermal overload, ground fault and unbalance). Communications play key role in the starting and stopping of low voltage motors. This project will also discuss several different starting/stopping controls using communication protocol i.e., Bluetooth technology. This project presents a Bluetooth-based wireless condition monitoring and protection system for low-voltage induction motors (below 600V AC). The system monitors important parameters such as voltage, current, and temperature while the motor is operating. A microcontroller processes the sensor data and detects faults such as overload, overheating, unbalance, and ground faults. The processed information is transmitted wirelessly using Bluetooth technology, enabling remote monitoring through a smartphone or Bluetooth-enabled device. This system helps reduce maintenance costs, prevent unexpected motor failures, and improve the reliability and safety of industrial motor operations.    

Objectives:

• To monitor the operating condition of a low-voltage induction motor.
• To measure motor parameters such as voltage, current, and temperature.
• To detect faults such as overload, overheating, and unbalance.
• To transmit motor condition data wirelessly using Bluetooth technology.
• To enable remote monitoring through a Bluetooth-enabled device.
• To reduce maintenance costs and prevent unexpected motor failures.
• To improve the safety, reliability, and efficiency of motor operation.

        The major building blocks of this project are:  

1. Regulated power supply with voltage regulator.
2. Temperature sensor.
3. POT (VOLTAGE).
4. POT (CURRENT).
5. Switch for Ground fault.
6. LCD display.
7. PIC Microcontroller.
8. DC Motor with Motor Driver.
9. HC-05 Bluetooth module.
10. Crystal oscillator.
11. Reset button.
12. LED indicator.

          Software’s used:  

1. PIC-C compiler for Embedded C programming.
2. PIC kit 2 programmer for dumping code into Micro controller.
3. Express SCH for Circuit design.

          Block Diagram:          

video: