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    基于DSP的高速動車組車內噪聲測試系統設計

    2013-06-12 《中國測試》雜志

    辛  光, 伍川輝
    (西南交通大學機械工程學院,四川 成都 610031)
    摘  要:為滿足高速動車組車內噪聲試驗的需求,設計一種基于DSP的噪聲測試系統,對測試系統的設計方案以及軟硬件實現進行介紹。系統由控制部分和運算部分組成:控制部分以高性能、低功耗的基于ARM Cortex-M3內核的微控制器STM32F103ZET6為核心,擴展了A/D采集模塊、NAND Flash存儲模塊以及藍牙通信模塊;運算部分以TI公司的低功耗DSP芯片TMS320VC5509A作為核心,負責對采集的噪聲數據進行實時處理,并把結果交給ARM發送給上位機,以實現對試驗效果的實時觀察;ARM與DSP通過雙端口RAM相連接,使得兩種處理器間的頻率差異得到解決并能有效地實現數據交換。實驗證明:基于DSP的噪聲測試系統能很好地滿足高速動車組車內噪聲試驗對噪聲數據采集和實時處理的需求。
    關鍵詞:測試系統;DSP;ARM Cortex-M3內核;高速動車組;車內噪聲;雙口RAM
    中圖分類號:TP216+.2;U292.91+4;TB535;TP274+.2    文獻標志碼:A     文章編號:1674-5124(2013)03-0084-04
    High-speed EMUs interior noise test system based on DSP
    XIN Guang, WU Chuan-hui
    (School of Mechanical Engineering,Southwest Jiaotong University,Chengdu 610031,China)
    Abstract: In order to meet the demand of interior noise tests for high-speed EMUs, a DSP-based noise test system was designed. The system consists of the control part and the computation section. High-performance and low power consumption control part takes ARM Cortex-M3 core-based microcontrollers STM32F103ZET6 as the core and extends A/D acquisition module, NAND Flash memory module, and Bluetooth communication module. Computing part takes TI’s low-power DSP chips TMS320VC5509A as the core and it is responsible for collecting the noise data in real-time processing, and sending the results to the host computer through the ARM in order to achieve real-time observation of the test results. ARM and DSP were connected with the dual-port RAM, which made the frequency differences between two processors resolved with effective data exchange. Experimental results show that the noise test system based on DSP can meet the demands of noise data acquisition and real-time processing for high-speed EMUs interior noise test.
    Key words: test system; DSP; ARM Cortex-M3 corebased; high-speed EMUs; vehicle interior noise; dual-port RAM
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