SUBMITTED BY EDGEFX TEAM REMOTE SPEED CONTROL BY THYRISTOR TRIGGER ANGLE CHANGE WITH DISPLAY OF DELAYED FIRING ANGLE SUBMITTED BY EDGEFX TEAM
ABSTRACT The main scope of project is to control the induction motor speed by using IR remote The microcontroller does the above job it receives the signals from the sensors, and this signals operated under the control of software, which is stored in ROM
PROPOSED SYSTEM micro controller which reads the coded data from the remote for each button pressed to activate the corresponding output pin to change the time delay for the thyristor firing in 8 steps that drives the induction motor.
BLOCK DIAGRAM
HARD WARE EQUIPMENTS POWEER SUPPLY BLOCK MICROCONTROLLER (AT89S52/AT89C51) DC MOTOR SEVEN SEGMENT DISPLAY LM358 MOC3021 ( OPTO COUPLER ) TRIAC TSOP 1738 RESISTORS & CAPACITORS 1N4007 & 1N4148 LEDS
EMBEDDED SYSTEMS Definition for :- EMBEDDED SYSTEMS A combination of hardware and software which together form a component of a larger machine. An example of an embedded system is a microprocessor that controls an automobile engine. An embedded system is designed to run on its own without human intervention, and may be required to respond to events in real time.
EMBEDDED SYSTEMS
AT89S52 MICRO CONTROLLER Compatible with MCS®-51 Products 8K Bytes of In-System Programmable (ISP) Flash Memory 4.0V to 5.5V Operating Range Crystal Frequency 11.0592MHZ Three-level Program Memory Lock 256 x 8-bit Internal RAM 32 Programmable I/O Lines Three 16-bit Timer/Counters Eight Interrupt Sources Full Duplex UART Serial Channel Watchdog Timer AT89S52
PIN DIAGRAM OF AT89S52
SEVEN SEGMENT DISPLAY
LM 358 ( COMPARATOR ) Internally frequency compensated for unity gain. Large dc voltage gain: 100 Db. Wide bandwidth (unity gain): 1 MHz (temperature compensated) Wide power supply range: Single supply: 3V to 32V or dual supplies: ±1.5V to ±16V Very low supply current drain (500 µA)-essentially independent of supply voltage. Low input offset voltage: 2 mV Input common-mode voltage range includes ground. Differential input voltage range equal to the power supply voltage.
LM 358 PIN DIAGRAM 1 - Output 1 2 - Inverting input 3 - Non-inverting input 4 – VCC- 5 - Non-inverting input 2 6 - Inverting input 2 7 - Output 2 8 – VCC+
MOC3021 ( OPTO COUPLER ) Opto-couplers are made up of a LED and a light sensitive device, all wrapped up in one package no electrical connection between the two devices The light sensitive device may be a photodiode, phototransistor, or more esoteric devices such as thyristors, triacs etc.
TRIAC
TSOP 1738 RECEIVER PIN DIAGRAM It’s a standard IR remote control receiver supporting all major transmission codes Pin1 – Connected to Ground Pin2 – Connected to Vcc Pin3 – Output Pin In Between 1st Pin and 2nd Pin we have to connect one Capacitor TSOP 1738 Receives 14—bit of data
TSOP 1738 FEATURES Photo detector and preamplifier in one package Internal filter for PCM frequency TTL and CMOS compatibility Output active low Low power consumption High immunity against ambient light Continuous data transmission possible (up to 2400 bps) Suitable burst length .10 cycles/burst
DC- MOTOR A DC motor is an electric motor that runs on direct current (DC) electricity. In any electric motor, operation is based on simple electromagnetism. A simple 2-pole DC electric motor (here red represents a magnet or winding with a "North" polarization, while green represents a magnet or winding with a "South" polarization). Every DC motor has six basic parts -- axle, rotor (a.k.a., armature), stator, commutator , field magnet(s), and brushes.
SOFTWARE REQUIREMENTS PROGRAMMING LANGUAGES Embedded C , ALP (Assembly Language) COMPILERS: Keil 2.0/3.0uv DUMPING SOFT WARE: Using Micro controller flash Software we are dumping our HEX Code into Micro Controller
KEIL COMPILER WINDOW
BIBILOGRAPHY The 8051 Microcontroller and Embedded systems” by Muhammad Ali Mazidi and Janice Gillispie Mazidi , Pearson Education. ATMEL 89S52 Data Sheets. www.atmel.com www.beyondlogic.org www.wikipedia.org www.howstuffworks.com www.alldatasheets.com
THANK ‘Q’