基于DSP的高速列车车内噪声舒适性测量装置

Noise comfort measuring device based on DSP inside high-speed train

为了满足高速列车车内噪声舒适性测量的需求,设计了一种基于DSP技术的便携式噪声舒适性测量装置。装置由控制部分和运算部分组成。控制部分以高性能、低功耗的EP1C6Q240C8为核心,扩展了A/D采集模块、SD卡存储模块;运算部分以低功耗DSP芯片TMS320VC5509A为核心,负责对噪声数据进行实时处理,并将结果交给FPGA发送到SD中保存;FPGA与DSP通过双口RAM相连接,使得2种处理器间的频率差异得到解决并实现高速传输。经实验验证:方案切实可行,为高速列车噪声舒适性测量提供了新的解决方案。

In order to meet the demand of high-speed train interior noise comfort tests,a DSP-based portable noise comfort measurement device is designed.The device consists of control part and computation part.High-performance,low power consumption of EP1C6Q240C8 is used as core of control part,A/D acquisition module,SD memory module are extended;low-power DSP chips TMS320VC5509A as the core of computing part,which is responsible for the noise data real-time processing,and results is submitted to the FPGA and sent to SD card;FPGA and DSP are connected by dual-port RAM,making difference between the two core＇s frequency can be resolved and high-speed transmission can be realized.It＇s verified that the scheme is a pratical design and it provides a new solution for noise comfort measurement of high-speed train.