PC BASED RADAR SYSTEM USING INFRA RED RAYS

BLOCK DIGRAM OF RADAR SYSTEM




















 THEORY OF RADAR SYSTEM : - WHICH TELLS HOW DOES THE RADAR SYSTEM IS BUILT UP USING PC AND INFRARED RAYS

IT TELLS YOU ABOUT 4 PIN IC 817 WHICH IS KNOWN AS OPTOCOUPLER. HOW DOES IT CONNECT AND WORKS IN THIS SYSTEM

IT TELLS YOU ABOUT HOW DOES TRANSMISSION AND RECEPTION OF INFRA RED OCCURS.

IT TELLS TOU ABOUT REST OF EVERY PART OF THIS SYSTEM FOR EXAMPLE RELAY ETC.

AC FUNDAMENTALS

1. ALTERNATIVE VOLTAGE :-A voltage that changes its polarity and magnitude at regular intervals of time is called an advertisement voltage

 2. SINUSOIDAL ALTERNATIVE QUANTITY-- An alternative quantity which varies according to sine of angle wt is known as sinusoidal alternative quantity

 3. GENERATION OF ALTERNATIVE VOLTAGE AND CURRENT-- An alternative voltage can be generated either
a)by rotating a coil in a uniform magnetic field at constant speed
b)by rotating a uniform magnetic field within a stationary coil at a constant speed.


4. Equation of alternative EMF and CURRENT









5. IMPORTANT TERMS--
a) waveform
b) instantaneous value
c) cycle
d) Alternation
e) Time period
f) Frequency
g) Amplitude

6. IMPORTANT RELATIONS--
a) Relation between frequency and time period
b) Realtion between frequency and angular velocity

 7. Different forms of alternative voltage equation

 8. Values of alternative voltage and current

 9. Peak value-- The maximum value attained by an alternative quantity during one cycle is called its peak value