基于DSP TMS320F2812涡街信号采集与谱分析系统  

A System Of Vortex Signal Acquisition and Spectrum Analyse Based on DSP TMS320F2812

作　　者：张金鑫[1] 周嵩岑[1] 王肖芬[1] 

机构地区：[1]上海理工大学光电信息与计算机工程学院

出　　处：《微计算机信息》2012年第9期148-149,120,共3页Control & Automation

摘　　要：本文以TI公司TMS320F2812芯片为核心控制器,主要研究2812DSP的片上外设ADC模块和周期图谱算法。2812DSP的12位16通道ADC模块实现对涡街流量计传感器信号的采集;DFT的快速算法FFT对采集信号进行特征分析,提取有用信号。通过实验和仿真验证了该设计的可行性和正确性。2812ADC模块采样精度高,采样频率范围广。FFT周期谱图法分析频域范围宽,能够有效的提取出有用信号,适合抑制确定性噪声。该系统抗干扰性能强,控制简单。The paper presents TI Company ＇s chip for TMS320F2812 as core controler,mainly researches on-chip peripherals ADC module of 2812 DSP and periodogram arithmetic.Through 2812 DSP 12 bit and 16 channals achieves acquisition of vortex flow meter sensor ＇s signal.Fast arithmetic FFT based on DFT analyses the signal ＇s feature and extract the useful signals.The experiment and emulation checks the correction and feasibility of the design.The ADC module of 2812 DSP has a high precision sampling and wide analysis of frequency rande frequency analysis.Adapt to restrain certainy noise.The system control easilge.The periodogram of arithmetic of FFT is able to extract useful signal effectively with wiy,anti-interference ability strong.

关 键 词：DSP2812 采样 周期图谱法 涡街流量计 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]