Real-time control system for traffic signal lamps at crossroad

[0017] The crossroad traffic flow distribution map of the crossroad traffic signal light real-time control system is as follows figure 1 As shown, the vehicle flow distribution map at the intersection only shows one of various types of vehicle flow distribution and vehicle flow control. Other types of vehicle flow distribution and traffic control real-time control systems for intersection traffic lights are easy to obtain by analogy. figure 1 In the east-west direction when the red light is on, the north-south direction A is the green light time for straight and right turn, and B is the green light time for the left turn.

[0018] The schematic diagram of the laser diode embedding is as figure 2 Shown. Its structure includes: steel pipe (1), cover plate (2), round glass sheet (3), laser diode kit (4), fixing plate (5), screw kit (6), bracket (7), junction box ( 8), wire (9), metal mesh (10), cable pipe (11), drain pipe (12), bottom cover (13), wherein the screw kit (6) consists of screws, nuts, washers, non-slip washers, It is composed of silicone shockproof gasket. When installing, the plane center line of the bracket (7) should be parallel to the center line of the cross arm where the light receiving head is installed. The hole on the bracket (7) for passing through the screws in the screw kit (6) is a long strip hole along the plane center line of the bracket (7), so that the fixed position of the fixing plate (5) can be adjusted and passed Screws, nuts, washers, non-slip washers, and silicone anti-vibration washers fix the fixing plate (5) on the bracket (7).

[0019] The traffic controller is composed of single-chip 89C52, EEPRAM24C32, LED display module and power supply module. EEPRAM24C32 is used to save data. The LED display module contains drive circuit and display circuit. It is connected with the I/O port of single-chip 89C52 and is controlled by the single-chip microcomputer.