Traffic Signal Control And Communications Design

At present such as inductance coil and etc. devices are adopted by most signal control systems to obtain field traffic information, which exists much deficiency both in installation, debugging, maintenance and technique. Aiming at these problems, the signal traffic controller based on DSPs image detection have been researched in the paper.The integral structure of system are analyzed, and a scheme based on DSPs processing board + MCU control board are put forward firstly, following design difficulties and relevant measures. Every modules of DSPs board are described in details, including chips selection, implementation manners choice, interface and time sequence match and etc. Compared Otsu single threshold segmentation with multi-threshold segmentations, the latter are preferred to perform the object identification in hardware designed by author. Combined to like background rejection, morphology expansion and etc. steps, the paper gets the length of queue; finally, A-B united control and area united control based on CAN bus are designed.