基于FPGA的便携式轴承状态监测仪设计

Design of Portable Bearing Condition Monitoring Device Based on FPGA

针对目前包络检波算法计算复杂且不适宜在便携式设备上进行轴承监测诊断的问题,介绍了一种基于FPGA的便携式轴承状态监测仪的设计方案;仪器采用FPGA作为主控制器,通过模拟信号放大电路、滤波电路和包络检波电路等硬件电路实现了包络信号的提取、检波功能,并使用FPGA的IP核对包络信号进行DFT运算得到频谱信息,最后通过液晶屏进行结果显示,为轴承状态监测诊断提供依据;文章仪器基于FPGA的嵌入式架构,通过硬件实现包络检波功能,具有运算速度快、便携性强、低功耗、高性能的优点。

The current envelope detection alogorithm is complex and not suitable for bearing monitoring devices.A design scheme about portable bearing condition monitoring device based on FPGA is proposed.FPGA is the main controller of this instrument.It uses the analog signal amplifier circuit,filter circuit and envelope detection circuit to extract and detect the envelope signal.And it uses the IP core of FPGA to calculate the spectral information through DFT operation.Finally the results display on the LCD which is useful bearing condition monitoring and diagnosis.The instrument is based on the embedded FPGA architecture and uses the hardware circuit to implement the envelope detection function with a high speed,portability,low power,high performance advantages.