15-10-2010, 07:34 AM
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FPGA IMPLEMENTATION OF CRC GENERATOR
BI-DIRECTIONAL VISITORS COUNTER AND DISPLAY SYSTEM WITH MAX CAPACITY ALARM
ABSTRACT
In today’s world, there is a continuous need for automatic appliances with the increase in standard of living; there is a sense of urgency for developing circuits that would ease the complexity of life.
The objective of this project is to make a controller based model to count number of persons visiting particular room and display on the LCD, if the room capacity exceeds then buzzer will be ON.
In our project we use IR sensors to detect the presence of a person. According to this project, two IR sensors are placed apart with a fixed known distance. When ever IR rays are interrupted by a person during first sensor the count up timer is started. This count value is displayed on the LCD; if it is obtained at second sensor then the count will be decreases depending upon the crowd. If the count value exceeds the preloaded count then Microcontroller ON the Buzzer it will makes a sound.