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International Journal of Scientific & Technology Research

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IJSTR >> Volume 8 - Issue 8, August 2019 Edition



International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616



Radio Frequency Sensor-Based Traffic Light Control for Emergency Vehicles

[Full Text]

 

AUTHOR(S)

Goshwe, Y. Nentawe, Okewu A. Victor and Kureve D. Teryima

 

KEYWORDS

Amplitude shift key modulation, Emergence vehicle, Microcontroller, Radio Frequency and Sensing distance.

 

ABSTRACT

Most cities in Nigeria experience traffic congestions during peak periods because road transport remains the dominant mode of transportation in Nigeria. These congestions have the consequence of affecting the efficiency, reliability and safety of emergency vehicles in performing their duties which are vital for saving lives and reducing property losses. This paper presents a prototype of an intelligent RF based traffic control system for emergency vehicles that transmits using amplitude shift key modulation technique at a frequency of 433 MHz and maximum sensing distance of 65 meters. The system operates in two modes: normal and emergency sequences. Under normal sequence, the designed pass period per lane was 15 seconds and complete cycle is 45 seconds. Under an emergency sequence, the transmitted signal overrides the normal sequence of traffic because the microcontroller will run the interrupt service routine (ISR) or interrupt handler which will trigger the red light on all the lanes. The prototype constructed gave a sensing distance of 42.2 meters, pass period per lane of 12 seconds and a complete cycle period of 36 seconds.

 

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