A development of distributed area traffic signal lights control based on singlechip
microcontroller through CAN BUS is described. With the core of
AT89C51, infrared receiver receives the infrared signal coming from launcher.
The demodulation signal is treated by single-chip microcontroller. The
singlechip microcontroller controls the CAN BUS controller to structure CAN
BUS communication system to transmit the data. The designator of
distributed traffic signal lights intelligent control system was carried out by
three control styles of vehicle flux, remote and PC.
The paper introduces total scheme and system structure, also the hardware
design of the system in detail. By experimental testing, when the key K1-K6 is
pressed ,time setting of east-west,south-north direction, emergency car,
timepsilas increase ,decrease ,holding are effectively controlled.
When the low -level time of WDI is continuous greater than 1.6 s, the RESET
port of watchdog produces negative overflow pulse signal lasting 200 ms to
reset AT89C51.The design demands of system are all satisfied.
