Design of adaptive intelligent traffic signal machine

In view of the current traffic signal machine by timing control and actuated control, it is difficult to realize the true meaning of traffic parameters are dynamically optimized, and puts forward a design scheme based on tms320c6713dsp self-adaptive intelligent traffic signal machine; due to the choice of high speed floating point processor parts, the system can on-line dynamic optimization to realize the adaptive control; the article describes in detail the system composition and working principle, and gives the specific hardware and software design scheme; use the results show that, the intelligent traffic signal machine system performance is stable and reliable, strong function, can conveniently realize the traffic network coordinated control.

City to speed up the process, the ITS has attracted much attention, and adaptive traffic signal control system has become the development trend of ITS. Commonly used in the our country is the timing control system, it according to the traffic of the past, according to the statistics law pre-set signal period and green time and parameters, in the whole operation process, parameter is always the same, and actual traffic situation is constantly changing, often with design different, especially when the traffic flow fluctuation, urban traffic congestion and blocked traffic queuing phenomenon is difficult to remove, vehicle delay time increases.

Another kind of traffic signal control method is to vehicle actuated control, compared with the static timing control, dynamic vehicle induction control in the adaptation to the random variation of traffic flow has greater flexibility, often get more excellent control effect than the timing control. But according to its control principle knowable, inductive control essentially did not according to the actual traffic situation of signal control parameters were optimized for any processing, so it just adapt to the traffic flow saturation degree is relatively low and the direction of the traffic volume difference is larger when the traffic and the traffic flow saturation degree is higher and the direction of the traffic volume are close to actual through capacity, and its control effect tantamount to a timing control.

The above information by the traffic signal machine manufacturers to provide small finishing