The Research And Design Of Wireless Vioce Communication For Traffic Control System Based On NRF24LE1

Wireless communication technology is an important area in embedded software development currently, it has got increasing development and changing people’s lives globally. The using of wireless technology not only has become a new means of communication to get data services, but also become an indispensable means of communication in people’s lives. The attractive advantage is low overhead in emerging short-distance wireless voice communication. Under the trend, this paper designed a wireless voice communication system for traffic control based on a chip of nRF24LE1.This paper describes the development of wireless communication technology’s background and the status in global, completing the hardware design by comparing and selecting the chip. The hardware system use modular design approach, it has nRF24LE1system circuit、audio pre-processing circuit、audio output circuit and power circuit parts. System software use the c language for development, according to the design of actual function, detailing the communication protocol and initialization, the ADC converts of the audio signal and audio sending、receiving, and PWM output function of amplification principle、 working processes.