【摘要】 本文介绍一种以数字信号处理器 (DSP)为核心、具有谱分析功能的涡街流量计信号处理系统。它采用周期图谱分析方法对涡街流量计中传感器的信号进行数字处理 ,准确计算出信号的频率 ,测出准确的体积流量。它抗干扰能力强 ,保证现场测量精度 ,扩大量程比 ,现场显示 ,并适用于不同口径和测量不同流体的一次仪表。它采用了 DSP,保证了处理的实时性更多还原

【Abstract】 A signal processing system of vortex flowmeter is presented in this paper. This system has the analyzing function of power spectrum based on a digital singnal processor (DSP). The sensor’s signals in flowmeter are processed digitally by means of the power spectrum analyzing method based on the periodogram spectrum method. The real frequency of signal is calculated, and the accurate volumetric flow is measured. The system has interference-free function, ensures the measuring precision in fields. It improves the ratio of measuring range. It is suitable for flowmeters that have different bores and measure different fluids. It processes signals in real time because it uses a DSP.更多还原