基于藍牙低功耗的表面肌電信號采集傳輸片上系統(tǒng)設(shè)計
發(fā)布時間：2018-11-02 18:35
【摘要】：本研究針對現(xiàn)有表面肌電信號采集傳輸系統(tǒng)多芯片解決方案功耗高、設(shè)計復雜、便攜性差等缺陷,提出了基于藍牙低功耗的表面肌電信號采集傳輸片上系統(tǒng)單芯片解決方案。該方案能夠根據(jù)應用需求定制軟硬件設(shè)計,提高硬件集成度,降低軟件設(shè)計復雜度,使得整個系統(tǒng)具有低功耗、低成本、高效能的特點,同時優(yōu)化用戶體驗。本方案在軟件上移植了 Contiki操作系統(tǒng)、編寫了底層驅(qū)動程序、構(gòu)建了基于Contiki內(nèi)核的藍牙低功耗協(xié)議棧、設(shè)計了應用層表面肌電信號采集傳輸工作流程、在信號采集加入了低功耗算法、在傳輸過程加入了基于小波變換的壓縮發(fā)算法、編寫了手機端信號接收顯示的APK;在硬件上根據(jù)軟件需求定制基于藍牙低功耗的片上系統(tǒng)并通過FPGA實現(xiàn)。本文對Contiki內(nèi)核和基于Contiki內(nèi)核的藍牙低功耗協(xié)議棧作了代碼量統(tǒng)計與精簡,并在FPGA上進行了功能驗證與穩(wěn)定性測試,又用了 TI公司的CC2541芯片對應用層表面肌電信號采集傳輸工作流程與優(yōu)化算法作測試驗證。結(jié)果表明基于藍牙低功耗的表面肌電信號傳輸采集片上系統(tǒng)單芯片解決方案穩(wěn)定、可行,符合理論預期效果,比其他解決方案更具優(yōu)勢。
[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.
【學位授予單位】：浙江大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：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.
【學位授予單位】：浙江大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：R318.04;TP274.2
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