RF-based traffic light voice reminding system

Abstract

The invention discloses an RF-based traffic light voice reminding system. A main control system comprises readers, a signal transmitting and receiving device 1, a main controller and a traffic light signal system. A voice reminding system comprises an electronic tag, a signal transmitting and receiving device 2, a slave control, and a loudspeaker. Each traffic light intersection is provided with two readers which are suspended at the front and rear sections of the traffic light intersection by roadside mounting brackets respectively. The sensing directions of the two readers both face the driving direction of vehicles. The main controller and the signal transmitting and receiving device 1 are installed at the traffic lights and connected to a traffic signal system. The reader 1 and the reader 2 transmit RF signals to the electronic tag the through the signal transmitting and receiving device 1 and the signal transmitting and receiving device 2. The electronic tag is connected to the slave controller. The RF-based traffic light voice reminding system can accurately play the real-time traffic light information at a suitable position and automatically stops the playing after a vehiclepasses the traffic light intersection, thereby improving the safety factor of the driver.

Description

technical field [0001] The invention relates to a traffic light voice reminder system based on radio frequency technology, which belongs to the technical field of intelligent transportation. Background technique [0002] Traffic lights are an important part of traffic signals and an important language of road traffic. Modern urban traffic mainly uses the traffic light control system to regularly switch between red lights, green lights, and yellow lights to guide the orderly passage of vehicles and pedestrians, so as to effectively alleviate traffic congestion and traffic safety accidents. [0003] Traffic lights are generally placed on the opposite side of the intersection to facilitate vehicles passing through the intersection to observe the traffic lights to ensure traffic safety. However, when there are buses, large trucks and other large vehicles passing through the intersection, it is difficult for vehicles behind to see the traffic lights at the intersection. Indicati...

AI Technical Summary

Problems solved by technology

[0003] Traffic lights are generally placed on the opposite side of the intersection to facilitate vehicles passing through the intersection to observe the traffic lights to ensure traffic safety. However, when there are buses, large trucks and other large vehicles passing through the intersection, it is difficult for vehicles behind to see the traffic lights at the intersection. Indication signals, or extreme weather such as heavy fog, rain, snow, heavy smog, etc., and the driver is prone to wear a red light when driving fatigued, which will cause hidden dangers to the personal safety and property safety of the driver himself and others.

[0004] The utility model patent with application number 201520062705.6 is a vehicle traffic light warning device. This patent sends the traffic light signal to the signal receiver on the car through a signal generator through a wireless signal, and displays the red and green signal on the LED screen of the windshield , although this method can visually observe the traffic light signals, but the driver needs to watch the traffic light signals on the screen to distract the driver's attention and easily cause safety accidents

[0005] The utility model patent with application number 201520062734.2 is a traffic light warning device at the rear of a large vehicle. This patent uses a signal generator to send the traffic light signal to the LED display at the rear of a large vehicle for display. Street light signals, but without considering the transmission distance of radio frequency, it may cause the traffic light signal cannot be transmitted from one vehicle to the rear LED display screen of the next large vehicle, resulting in the failure of following vehicles to obtain the traffic light signal, and in the rear of the vehicle The practicality of installing an LED display is relatively poor

[0006] In addition, the above two voice systems may constantly remind the driver when the green light time is still very long, which will cause the driver to be distracted and affect the comfort of the passengers, and it is easy to display the traffic light information at a long distance from the intersection. cause driver misjudgment

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