Intelligent traffic system based on light emitting diode (LED) visible light communication

Abstract

The invention discloses an intelligent traffic system based on light emitting diode (LED) visible light communication, and belongs to the field of intelligent traffic systems. The intelligent traffic system comprises LED traffic lamps, a light emitter and a light receiver, wherein the light receiver and the light emitter are arranged on one vehicle; the light receiver on a back vehicle receives a signal sent by the light emitter on a front vehicle; signals sent by the LED traffic lamps comprise a road condition and traffic lamp conditions; the signal sent by the light emitter comprises a distance between the front vehicle and the rear vehicle and a warning signal; and the light receiver receives the signals sent by the LED traffic lamps and the light emitter. Due to the method, a visible light intelligent traffic network is formed, so that road condition information, the distance between the front vehicle and the rear vehicle, the warning signal and the traffic lamp conditions which are sent by the LED traffic lamps can be received immediately; and therefore, the traffic safety is guaranteed, and the probability of traffic accidents is reduced.

Description

technical field [0001] The invention relates to the technical field of intelligent transportation, in particular to an intelligent transportation system based on LED visible light communication. Background technique [0002] At present, super-bright LEDs replace incandescent lamps and are used in traffic lights, warning lights, and sign lights all over the world. Compared with incandescent lamps, LED traffic lights have the advantages of good visibility, low power consumption, low heat energy, and long service life. Long, fast response, and can greatly increase the brightness, become the ideal light source for future traffic lights. [0003] In the existing intelligent transportation system, radar or infrared detectors are installed on the front and side of the car to judge the distance between the car and obstacles. In case of emergency, the on-board computer can issue an alarm or Self-brake to avoid, and adjust the driving speed according to the road conditions. Radar us...

AI Technical Summary

Problems solved by technology

Radar uses the reflection of electromagnetic waves from targets to find targets and measure their positions and relative speeds. Its detection range is relatively long, its operation is reliable, and its performance is less affected by the weather, but it is too expensive and cannot be used accurately in complex traffic environments. Work; Infrared detection is to convert the incident infrared radiation signal into electrical signal output. Infrared radiation is an electromagnetic wave with a wavelength between visible light and microwave. It has strong environmental adaptability, good concealment, small size, light weight and low power consumption. characteristics, but it is easily disturbed by various heat sources and sunlight sources and has poor penetration

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