ABSTRACT
today, the traffic lights installed in each crossing, to ease the traffic has become
the most common and most effective means of. The development of society, people's
consumption level unceasing enhancement, personal vehicles unceasing increase.
Many people, fewer cars and more road traffic is very obvious. So adopting effective
method to be imperative to control traffic lights. Intelligent PLC control principle is
the core of the control system, using PLC to East-West or north-south direction of the
vehicle were classified according to the number of scale, east-west and north-south
direction corresponding to a given length of green time by a certain size grading, this
can be achieved by the car flow scale given light duration, maximum limit vehicle
clearance, reducing the crossroads of the vehicle stagnation, relieve traffic congestion,
to achieve optimal control, so as to improve the efficiency of traffic control system.
MCGS provides a complete solution to solve practical engineering problems and
open platform for the user, can complete the data acquisition, real-time and historical
data processing, alarm and security mechanism, animation display, trend curve and
report output and enterprise network monitoring and other functions. The use of
MCGS, the user need not have knowledge of computer programming, can be an easy
job to complete a stable operation, in a short period of time to mature, to maintain the
development of computer monitoring and control system of small amount of work and
professional. MCGS has simple operation, good visibility, strong harmfulness, high
reliability characteristics.
Based on PLC and computer communications, through the configuration
software can monitor the full range of the current working state of PLC, further
through the configuration software can process simulation of working process for
controlled object, to realize the remote control. Because it makes full use of the
characteristics of computer and PLC, realize the complementary advantages and has
been widely applied. This paper uses computer as upper machine, using (MCGS6.2)
configuration software as development platform, the slave computer uses Mitsubishi
Co FX-2N series programmable controller, a simple and practical control of traffic
lights at a crossroads, to solve the intersection crosswalks and pedestrian red-light
traffic safety problems caused by.
Keywords:PLC;MCGS configuration;traffic lights;control system