Traffic signal lamp control system and method

Abstract

The invention discloses a traffic signal lamp control system and method. The system comprises multiple detection coils, multiple LC magnetic flux detectors, a single-chip microcomputer, a microprocessor and multiple traffic lamps, wherein each detection coil is connected with the single-chip microcomputer through one LC magnetic flux detector, the single-chip microcomputer is connected with the microprocessor, and the microprocessor is connected with the multiple traffic lamps; the detection coils detect whether vehicles pass through corresponding lanes and send inductance signals to the LC magnetic flux detectors; the LC magnetic flux detectors generate concussion frequency signals for sending to the single-chip microcomputer; the single-chip microcomputer, according to the frequency signals, determine whether vehicles pass through stop lines on the lanes; and the microcontroller controls switching of the traffic signal lamps at crossroads, reads determination results from the single-chip microcomputer in case of a yellow lamp, and according to the determination results, sends control signals to the traffic lamps for delaying red-lamp time in corresponding directions or switching the traffic signal lamps. According to the invention, the pass efficiency of the vehicles at the crossroads can be improved, and driving safety of the vehicles at the crossroads can also be guaranteed.

Description

technical field [0001] The invention relates to the technical field of traffic control, in particular to a traffic signal lamp control system and method. Background technique [0002] In traffic planning, the yellow light mainly plays the role of "clearing the intersection", that is, between the switching of signal lights, it ensures that the last vehicle in the direction of the previous green light passes safely. But in fact, within a certain distance, it is generally difficult for a car to stop under the action of inertial force, and the process of changing a yellow light to a red light is generally only three seconds. Therefore, it is correct in principle not to allow cars to pass after the green light turns yellow in the traffic rules, but it is difficult to control in implementation. Because many traffic lights do not have a countdown timer, it is difficult to tell when the light changes from green to amber. It is difficult to stop the car when the green light suddenl...

AI Technical Summary

Problems solved by technology

If it happens that the yellow light is about to end, the other direction of travel will immediately turn into a green light. Therefore, if the vehicle in the other direction starts quickly, or the vehicle speed is very fast when the red light at the intersection turns green, it is easy to run into the vehicle. Vehicles with yellow lights collide and cause traffic accidents. Such traffic accidents are reported from time to time. In order to avoid traffic accidents, some intersections have set up yellow lights to end the transition state of all red on all sides, which solves the safety problem. At the same time, all sides are red, which wastes the passing time and reduces the passing efficiency of the intersection.

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