Automatic Door-Control-system project 
PRINCIPLE OF OPERATION: The Controller operates  a Dual Door  wire rope driven System.
 There are three sensors, two are PIR sensors for detecting movement of warm blooded objects
 at the entry and exit , the third is a Interrupted IR sensor for DOOR BLOCK Condition.
 The controller senses movements on entry and exit operates the door and makes relevant VOICE announcements.
 In case the Door Movement is blocked an announcement is made for clearing the door blockage.
 Using 8051,IR,speech , AC motor control, passive infra-red, movement detection The Software is in Assembly
 and with a feature to In system Program at Customer site by ownloading the modifications from a PC..