Digital control method of urban traffic lights

Abstract

The invention discloses a digital control method of urban traffic lights. The method comprises the following steps of: arranging a data terminal unit (DTU) on each controlled traffic light, wherein the DTUs are connected with the traffic lights after being connected with a signal amplification circuit and a drive circuit and each DTU is provided with a unique address code; transmitting a control signal loaded with a control command '0' or '1' and a specified address code to the DTU unit which is provided with the address code corresponding to the specified address code through a wireless transmission network in a control center; and after the DTU receives the control signal, amplifying the control signal and controlling the traffic lights to work according to a control command by the drive circuit. Each traffic light can be controlled independently, so that the limit of interlocking of traffic lights on intersections is overcome and the traffic lights are convenient to control flexibly according to practical traffic conditions.

Description

(1) Technical field [0001] The invention relates to a control method of urban traffic lights. (2) Background technology [0002] When the existing urban traffic lights (traffic lights) are controlled, the traffic lights at the intersection have interlocking restrictions, that is, the red-green conversion between the traffic lights at the intersection forms a mutual restriction relationship, and each traffic light cannot be controlled separately Therefore, the control method is relatively rigid and cannot be flexibly controlled according to the actual traffic situation. (3) Summary of the invention [0003] In order to overcome the above-mentioned shortcomings of the existing urban traffic light control methods, the present invention provides a digital control method for urban traffic lights that can individually control each traffic light and facilitate flexible control according to actual traffic conditions. [0004] The technical solution of the present invention to solve its tec...

AI Technical Summary

Problems solved by technology

[0002] When the existing urban traffic lights (traffic lights) are controlled, the traffic lights at the intersection have interlocking restrictions, that is, the red and green transitions between the traffic lights at the intersection form a mutual restrictive relationship, and each traffic light cannot be individually controlled. , so the control method is relatively rigid and cannot be flexibly controlled according to the actual traffic conditions