This project is designed to synchronize the speed of multiple AC motors using wireless Zigbee technology. One motor acts as the master (transmitter) and the other motors act as slaves (receivers). The speed set for the master motor is wirelessly transmitted to the slave motors, which automatically adjust their speeds to match the master motor. The system uses IR sensors for RPM feedback, a PIC microcontroller for speed control, and Zigbee modules for wireless communication. An LCD and keypad are provided for setting and displaying motor speed. Speed control is achieved using a TRIAC-based circuit with zero-crossing detection and optical isolation for safety. This system is useful in industries such as textile mills, steel plants, and conveyor systems where multiple motors must operate at the same speed. It reduces speed errors, saves manpower, improves efficiency, and ensures reliable synchronization. Future enhancements include fault detection and automatic shutdown of the entire system when a motor fault occurs.    

The main features of this project are:  

• Wireless motor speed synchronization using Zigbee technology.
• One master motor control multiple slave motor.
• Real-time speed matching between all motors.
• Closed-loop feedback using IR sensors for accurate RPM measurement.
• PIC microcontroller-based intelligent control system.
• LCD display for speed and system status monitoring.
• Keypad interface for easy speed setting.
• TRIAC-based AC motor speed control.
• Zero-crossing detection for smooth and precise operation.
• Optical isolation for protection against high-voltage circuits.
• Reduced speed error among multiple motors.
• Suitable for industrial applications such as conveyor systems, textile mills, and steel plants.
• Saves manpower and improves operational efficiency.
• Easy expansion to synchronize additional motors.
• Future provision for fault detection and automatic system shutdown.

      The major building blocks of this project are:  

• Regulated power supply.
• PIC Microcontrollers.
• Zigbee transmitter and receiver.
• 16*2 LCD display with driver.
• AC motor.
• keypad.
• IR sensors.
• Zero crossing detector.
• Triac.
• Diac.

    Software’s used:

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

      Regulated Power Supply:

                                     

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