Abstract:
We have studied Laser orientation system which is an important
instrument for many applications as laser range finder, laser tracking and
laser pollution detection. And also we describe how to design and construct
laser orientation system by using two stepper motors, plane mirror, laser
source and computer software (Bascom – AVR programming language).
We have chosen stepper motors because of its easy control and high
performance. These stepper motors are directly connected to drivers
(ULN2003, microcontroller and max232). When the circuits switched on,
microcontroller order a computer to enter the commands, after computer
send right commands to microcontroller throughout the hyper
terminal
connector, the laser orientation system will be done; after we get the correct
3
orientation they will be another command from the computer to open the
.laser source in certain time
We have calculated the orientation angle of the laser beam and notice
that in the first motor where a gear is used, error position is very little and
step angle also reduced approximately of one to five, compared to other. Of
,course high performance can be obtained by use of a few types of sensors
.which determine the position error of motor and target
