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DSP platform based on the new DSO underlying drivers and software acquisition module design

Author: SunJie
Tutor: WangHouJun
School: University of Electronic Science and Technology
Course: Detection Technology and Automation
Keywords: Digital storage oscilloscope TMS320C6748 level drive storage system sampling and processing module
CLC: TM935.37
Type: Master's thesis
Year: 2011
Downloads: 118
Quote: 0
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Abstract


In recent decades, DSO has been developing very fast in many aspects, such as higher bandwidth, higher sampling rate, multi-function and lower power consumption. DSP (Digital signal processor) plays a key role in the DSO system based on the architecture of DSP+FPGA (Field programmable gates array), and has key functions such as controlling system, processing data, and driving peripheral. The rapid development of DSO gives more requirement to DSP. So, it is of great significance to explore and design new DSO system, based on the high- performance DSP platform to improve the DSO system. The subject of this thesis is to complete the design of DSO system, based on the high performance TMS320C6748 DSP(one core of OMAP-L138 processor) platform of Texas Instruments (TI), and the main goal is to explore the benefits and advantages. The main work and achievements of the thesis as follows:1. Based on the analysis of the feature of digital storage oscilloscope and TMS320C6748 DSP platform, the design of DSO system is completed, which indicates the feature of new DSP platform makes the design of DSO system more convenient.2. The function and structure of TMS320C6748 DSP platform is analyzed and the implementation of level drive of DSP platform is also achieved. This work shows low level functional unit plays an important role in low power control and multi-function extended of DSO system.3. By utilizing the plentiful interfaces of DSP platform, the design of DSO storage system, the expansion of large capacity RAM and the application of non volatile storage device are accomplished.4. According to the control and treatment requirements of DSO, implementation of signal sampleing and processing module, graphic display module and user operation module (keyboard processing module) is achieved, by utilizing the special interfaces and peripherals of DSP platform.The result of designment and debugging of DSO showes that TMS320C6748 DSP platform has obvious advantages in data processing, peripheral resources and platform extensions, comparing to previous ADI BF531 DSP platform.

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CLC: > Industrial Technology > Electrotechnical > Electrical measurement techniques and instruments > Frequency, waveform parameter measurement and instrumentation > Oscilloscope > Digital oscilloscope
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