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本文介绍了分离式医用多导生理记录仪的数据传输部分,使用蓝牙设备来传输采集的睡眠生理数据,但数据传输过程中干扰比较大,故本文在蓝牙跳频技术的基础上通过固定蓝牙无线数据传输信道号来保障无线数据的安全传输。文章主要讲述了蓝牙跳频序列的生成,以及将该跳频序列的一部分序列划分成5个子序列并对其进行改进后,分配给不同的蓝牙设备以解决微微网之间通信干扰问题。最终仿真结果表明改进的5个子序列间的汉明互相关特性非常好,能实现抗干扰的目的。
This paper introduces the data transmission part of the separation medical multi-channel physiology recorder, uses the bluetooth device to transmit the collected sleep physiology data, but the data transmission process has the big interference, so this paper based on the Bluetooth frequency hopping technology, through the fixed bluetooth wireless Data transmission channel number to ensure the safe transmission of wireless data. The article mainly introduces the generation of Bluetooth frequency hopping sequence, and divides a part of the frequency hopping sequence into five subsequences and improves it, then allocates it to different Bluetooth devices to solve the communication interference problem between piconets. The final simulation results show that the improved Ham Hamming correlation between the five sub-sequences is very good and can achieve the purpose of anti-interference.