BLE-based traffic signal transmission method and system

Abstract

The invention discloses a BLE-based traffic signal transmission method and system, and the method comprises the following steps: setting first equipment at a traffic signal lamp intersection, and enabling one piece of first equipment to correspond to one lane direction of the current intersection; the first device determining a signal coverage range of the current intersection according to the distance between the current intersection and surrounding intersections; the first equipment calculating the transmitting power of the current intersection according to the signal coverage range and a path loss formula when the first equipment transmits the traffic signal, and transmitting the traffic signal of the current intersection according to the transmitting power; and the second equipment receiving and displaying the traffic signal transmitted by the first equipment, and the second equipment being arranged in a vehicle. According to the technical scheme of the invention, accurate coverage of traffic signals among all traffic signal lamp intersections is realized, and the transmission efficiency of the traffic signals is improved.

Description

technical field [0001] The invention relates to the technical field of signal transmission, in particular to a BLE-based traffic signal transmission method and system. Background technique [0002] The appearance of traffic signal lights enables traffic to be effectively controlled, and has obvious effects on dredging traffic flow, improving road capacity, and reducing traffic accidents. At present, the traffic light system used at various crossroads mainly indicates the state of passing and prohibiting passage by turning on and off the traffic lights, that is, prohibiting passage when the red light is allowed, allowing passage when the green light is green, and passing according to the situation when the yellow light is on. When the following car is behind a large vehicle, because the traffic lights are blocked, it is easy to cause the traffic lights to be red when passing, and traffic violations occur. Violations and even traffic accidents. Aiming at the defects of the c...

AI Technical Summary

Problems solved by technology

[0004] 1. Use a dedicated color sensor chip to complete the conversion from light intensity to frequency, and automatically identify whether the current signal is a red light or a green light by identifying the color frequency of the traffic light; Insufficient, the status of traffic lights cannot be automatically recognized

[0005] 2. Through multiple iBeacon base stations for signal coverage, the status of the traffic light signal is sent to the iBeacon base station wirelessly, and the mobile phone receives the traffic light signal sent by the iBeacon base station through the app software through Bluetooth; The coverage signal of a base station causes a misjudgment of the traffic light signal

[0012] The bluetooth slave controller arranged along the road, the intelligent terminal receives the information broadcast by the bluetooth master-slave controller, and filters the interference information combined with its own GPS positioning position information, so as to accurately prompt the traffic light information to the user; in this scheme, signal sources need to be arranged along the road , and the receiver needs to be equipped with a GPS module; therefore, this solution has the disadvantages of complex layout, high cost, and high power consumption; at the same time, when the vehicle leaves the intersection, it will still receive traffic light signals and affect driving

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