BEZERRA, G. C.; http://lattes.cnpq.br/1962032581835311; BEZERRA, Giulliano Cavalcanti.
Resumen:
The lights can be programmed in different ways, depending on traffic conditions and
route. In Operation in Fixed Time, the lights are programmed from historical data on
traffic conditions on site. Operation or Acted On Demand Traffic, traffic lights respond
to actual traffic on the site. Strategically, the lights can operate alone or networked
with the traffic lights adjacent. The official manual on signaling traffic lights, with a
focus on computing and programming of the times, was published by DENATRAN
(National Traffic Department) in 1979 and its second edition published in 1984. A new
manual is being drafted by a technical group formed by DENATRAN. For purposes of
this study, Operation Acted is that which can respond to actual traffic because the
traffic lights programmed in Fixed Time are not able to provide a new situation that
might occur and make a decision consistent with the situation. In places where there
are sudden changes in traffic - the peak hours, between peaks and fluctuations - the
operation in Fixed Time is not attractive. According to Kell and Fullerton (1991), The
Principle of Extension is widely applied to the actuated control strategies whose main
objective is to optimize the crossing of an intersection as to time and fuel usage. The
purpose of this paper is to develop an algorithm and a C program for implementation
of the Principle of Extension in an architecture microcontroller, where the GSM
network through GPRS technology to support communication between the traffic
control system and a Supervisory Remote Control. A CT module 65 of SIEMENS is
proposed to connect each controller to the GSM network. This document also
presents all the difficulties encountered during its development, and proposals for
future work.
