The Pedestrian Detection And Control System Design

In the present urban daily life,high-speed railway,subway,light rail and bus rapid transit,transportation is very common,intelligent pedestrian system as a "gatekeeper" in and out of these traffic site its application is becoming more and more widely.This paper designed a pedestrian detection and control system,can accurately discriminate pedestrians,improves the accuracy and stability of the judgment.Traditional pedestrian detection and control system is by means of ultrasonic or common infrared sensor to realize the target recognition,often will be affected by the interference of sound or light around,there is a mistake and false negative phenomenon,is not conducive to the big flow of pedestrians and passengers travel experience.Based on the working principle of photoelectric diode and photo diode amplifier analysis and research,photoelectric detection technology is very stable and effective,photoelectric detection technology can must determine the pedestrian detection and control system of pedestrian traffic state,eliminate transmission recognition mode of wrongly and the phenomenon of false negatives.The pedestrian detection and control system design includes two aspects of hardware design and software design.On the hardware design,design the traffic target identification circuit,motor control circuit and power supply circuit,limit the brake circuit,hall encoder circuit,LCD display circuit,indicator light circuit,etc.,through the STM32 control chip,the pedestrian to cooperate to complete target detection and control system of the gate closed and open.Software design,carefully analyses the principles and applications of all kinds of communication protocol,the design of the main program,display subroutine,maloperation subroutine,clamp program modularized program,etc.After the software and hardware alignment,modify the pedestrian passageway problems that exist in the target detection and control system design,and part of software design was further improved.Experiments show that for many times,The line channel sensitive target detection and control system,safe and reliable,good to meet the design requirements.