Unit I : Mechatronics, Sensors and Transducers Introduction to mechatronics systems - Measurement systems - Control systems - Sensors and transducers - Performance terminology - Sensors for - Displacement, Velocity, Force, Fluid pressure, Liquid flow, Liquid level, Temperature, Light sensors, Selection of sensors. Unit II : Digital Logic and Data Presentation Digital signals - Introduction- BCD system - Analog and digital signals - Digital to analog conversion - Logic gates - AND-OR-NOT-NAND-NOR-XOR, Applications - Coder - Encoder - Decoder with seven segment display - LCD - (Traffic light) - Sequential logic - Flip flops - SR, JK, D Flip flops - Registers - Data presentation system - Display - Data presentation elements - Types - Printers - Dotmatrix, Laser printer, Data acquisition system, Selection criteria. Unit III : Actuation Systems Electrical actuation systems - Mechanical switches - Solid state switches - Types - Diode - Power MOSFETs - Solenoids - D.C. motors - Basic working principle - Types - A.C. motors - Basic working principle - Types - Stepper motors - Basic working principle - List types - Stepper motor specifications - Mechanical actuation systems - Ratchet and Pawl - Bearings. Unit IV : System Models and Controllers Building blocks of mechanical, Electrical, Fluid and thermal systems - Rotational - Translational systems - Electromechanical systems - Hydraulic - Mechanical systems - Continuous and discrete process controllers - Control mode - Digital controllers - Velocity control - Adaptive control. Unit V : Programming Logic Controllers Introduction to memories - RAM, ROM, PROM, EPROM, EEPROM, Microprocessor-Block diagram-Architecture of 8051, Microcontroller-Architecture, Pin configuration of Intel 8081, Difference between microprocessor and microcontroller. Programmable logic controllers - Basic structure - Input/output processing - programming - Ladder diagram - Mnemonics - Timers, Internal relays and counters - Shift registers - Master and jump controls - Data handling - Analogs input / output - Selection of PLC. Unit VI : Communication and Design of Mechatronics System Digital communication systems - Centralized, Hierarchical and distributed control - Networks - Protocols - Open systems interconnection communication model - Communication interfaces - Possible design solutions case studies of mechatronics systems - Car park barrier systems - Engine management systems - Hard disc drive.