Research on Medical Wireless Frequency Hopping Communication by nRF24L01

Abstract

AbstractMedical electronics become more and more portable in modern time, the transmission of the data towards more wireless, it also need higher requirements on power and the instruments quality. Although the Bluetooth usually can be used in wireless transmission in the system of the data transmission, but it is too expensive, and power is too larger.The platform is ARM in this system, and research on the wireless data transmission system of the short-range based on nRF24L01. Using the wireless chip nRF24L01 of the NORDIC company that can low the power consumption to 1mW and obtain better standby time performance. Using the technology of the DS/FH-SS(the combination of the direct sequence spread spectrum and the frequency-hopping spread spectrum) that can solve well the interference problems of the signal from the other device in the communication process of the 2.4G band ,to achieve the lower BER of the wireless data transmission and high reliability characteristic , on the basis of using the adaptive frequency-hopping technology.The system is mainly applicable to complex environment, serious electromagnetic interference, the higher requirements of the data reliability, and the medical electronics field of the long-term stability work.KeywordsWireless data transmissionfrequency-hopping spread spectrumdirect sequence spread spectrumadaptive frequency-hopping