基于蓝牙低功耗的表面肌电信号采集传输片上系统设计
发布时间：2018-11-02 18:35
【摘要】：本研究针对现有表面肌电信号采集传输系统多芯片解决方案功耗高、设计复杂、便携性差等缺陷,提出了基于蓝牙低功耗的表面肌电信号采集传输片上系统单芯片解决方案。该方案能够根据应用需求定制软硬件设计,提高硬件集成度,降低软件设计复杂度,使得整个系统具有低功耗、低成本、高效能的特点,同时优化用户体验。本方案在软件上移植了 Contiki操作系统、编写了底层驱动程序、构建了基于Contiki内核的蓝牙低功耗协议栈、设计了应用层表面肌电信号采集传输工作流程、在信号采集加入了低功耗算法、在传输过程加入了基于小波变换的压缩发算法、编写了手机端信号接收显示的APK;在硬件上根据软件需求定制基于蓝牙低功耗的片上系统并通过FPGA实现。本文对Contiki内核和基于Contiki内核的蓝牙低功耗协议栈作了代码量统计与精简,并在FPGA上进行了功能验证与稳定性测试,又用了 TI公司的CC2541芯片对应用层表面肌电信号采集传输工作流程与优化算法作测试验证。结果表明基于蓝牙低功耗的表面肌电信号传输采集片上系统单芯片解决方案稳定、可行,符合理论预期效果,比其他解决方案更具优势。
[Abstract]:In order to solve the problems of high power consumption, complex design and poor portability in the existing surface EMG signal acquisition and transmission system, a single-chip solution based on Bluetooth low power consumption is proposed in this paper. This scheme can customize the hardware and software design according to the application requirements, improve the hardware integration, reduce the software design complexity, make the whole system have the characteristics of low power consumption, low cost and high efficiency, and optimize the user experience at the same time. In this scheme, the Contiki operating system is transplanted on the software, the bottom driver is written, the Bluetooth low power protocol stack based on the Contiki kernel is constructed, and the work flow of EMG acquisition and transmission on the application layer is designed. A low power algorithm is added to the signal acquisition, and a wavelet transform based compression algorithm is added to the transmission process. The APK; for receiving and displaying the signal on the mobile phone is written. The system based on Bluetooth low power consumption is customized in hardware according to software requirement and implemented by FPGA. In this paper, the Contiki kernel and the Bluetooth low power protocol stack based on the Contiki kernel are counted and simplified, and the function verification and stability test are carried out on FPGA. TI's CC2541 chip is also used to test and verify the work flow and optimization algorithm of EMG signal acquisition and transmission on the application layer. The results show that the single-chip solution based on Bluetooth and low power consumption is stable, feasible and in line with the expected theoretical results, and has more advantages than other solutions.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：R318.04;TP274.2
[Abstract]:In order to solve the problems of high power consumption, complex design and poor portability in the existing surface EMG signal acquisition and transmission system, a single-chip solution based on Bluetooth low power consumption is proposed in this paper. This scheme can customize the hardware and software design according to the application requirements, improve the hardware integration, reduce the software design complexity, make the whole system have the characteristics of low power consumption, low cost and high efficiency, and optimize the user experience at the same time. In this scheme, the Contiki operating system is transplanted on the software, the bottom driver is written, the Bluetooth low power protocol stack based on the Contiki kernel is constructed, and the work flow of EMG acquisition and transmission on the application layer is designed. A low power algorithm is added to the signal acquisition, and a wavelet transform based compression algorithm is added to the transmission process. The APK; for receiving and displaying the signal on the mobile phone is written. The system based on Bluetooth low power consumption is customized in hardware according to software requirement and implemented by FPGA. In this paper, the Contiki kernel and the Bluetooth low power protocol stack based on the Contiki kernel are counted and simplified, and the function verification and stability test are carried out on FPGA. TI's CC2541 chip is also used to test and verify the work flow and optimization algorithm of EMG signal acquisition and transmission on the application layer. The results show that the single-chip solution based on Bluetooth and low power consumption is stable, feasible and in line with the expected theoretical results, and has more advantages than other solutions.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：R318.04;TP274.2
【参考文献】
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1 邱萍;朱e，
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