1. SUBMITTED BY EDGEFX TEAM
REMOTE SPEED CONTROL BY THYRISTOR TRIGGER ANGLE CHANGE WITH DISPLAY OF DELAYED FIRING ANGLE
SUBMITTED BY
EDGEFX TEAM

2. 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

3. 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.

4. BLOCK DIAGRAM

5. 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

7. 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.

8. EMBEDDED SYSTEMS

9. 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 MHZ
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

10. PIN DIAGRAM OF AT89S52

11. SEVEN SEGMENT DISPLAY

12. 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.

13. 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+

14. 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.

15. TRIAC

16. 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

17. 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

18. 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.

19. 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

20. KEIL COMPILER WINDOW

21. BIBILOGRAPHY
The Microcontroller and Embedded systems” by Muhammad Ali Mazidi and Janice Gillispie Mazidi , Pearson Education.
ATMEL 89S52 Data Sheets.

22. THANK ‘Q’