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针对传统数据采集系统功能单一,抗干扰能力差,精度低,内存小,速度慢无法处理大量数据的问题,设计了一款基于DSP处理器的声压与振动数据采集系统;仪器内置的FPGA保障了高速数据采集,DSP处理器和大容量DDR2存储器使得系统可以不依赖上位机而直接在设备底层进行FFT计算,以太网接口有效地提高了数据传输的安全性和可靠性;环境试验结果显示该系统性能稳定,适用于如高温、低温、盐雾、高冲击等恶劣环境下的数据采集,可以满足声压和振动信号的采样和分析要求。
Aiming at the problem of traditional data acquisition system, such as single function, poor anti-jamming ability, low precision, small memory and slow processing speed, a DSP-based sound pressure and vibration data acquisition system was designed. The built-in FPGA protection The high-speed data acquisition, DSP processor and large-capacity DDR2 memory make the system can not directly rely on the host computer and FFT calculations directly on the bottom of the device, the Ethernet interface effectively improves the security and reliability of data transmission; environmental test results show that the System performance and stability, suitable for high temperature, low temperature, salt spray, high impact and other harsh environment data acquisition, to meet the sound pressure and vibration signal sampling and analysis requirements.