Design of multi-functional street light control system based on AT89S52 single-chip microcomputer

Presented is a street lights control system based on AT89S52 as control core. It is a combined product of the following technologies: a digital clock, a timer, a Liquid Crystal Display (LCD), a statistics of traffic flowing magnitude, a photosensitive induction, an infrared control and alarm function. This street light system also includes a time cut-out function, and an automatic control pattern for even more electricity conserving, namely when vehicles pass by, the light will turn on automatically, later turn off. This design can save a great amount of electricity compared to streetlamps that keep alight during nights. The design implements traffic flow magnitude statistics without adding any hardware, facilitating transportation condition information collecting. Furthermore, this system has auto-alarm function which will set off if any light is damaged and will show the serial number of the damaged light, thus it is easy to be found and repaired the damaged light.