电子世界
電子世界
전자세계
ELECTRONICS WORLD
2013年
3期
129-130
,共2页
MSP430%STC12C5A60S2%FFT%频谱
MSP430%STC12C5A60S2%FFT%頻譜
MSP430%STC12C5A60S2%FFT%빈보
MSP4302G2553%STC12C5A60S2%FFT%Frequency Spectrum
本系统以一块STC12C5A60S2单片机为主控制器,辅以另一块同型号单片机,用于产生两路幅度、相位、频率、占空比等参量可预置的信号;通过加法器将双路信号进行叠加;经采样将信号送入MSP430单片机进行FFT快速傅氏变换运算,在频域内对波形信号的各个频率分量以及幅度等进行分析处理;通过单片机之间的串口通信将处理结果送回主控制器并通过LCD液晶进行结果显示.
本繫統以一塊STC12C5A60S2單片機為主控製器,輔以另一塊同型號單片機,用于產生兩路幅度、相位、頻率、佔空比等參量可預置的信號;通過加法器將雙路信號進行疊加;經採樣將信號送入MSP430單片機進行FFT快速傅氏變換運算,在頻域內對波形信號的各箇頻率分量以及幅度等進行分析處理;通過單片機之間的串口通信將處理結果送迴主控製器併通過LCD液晶進行結果顯示.
본계통이일괴STC12C5A60S2단편궤위주공제기,보이령일괴동형호단편궤,용우산생량로폭도、상위、빈솔、점공비등삼량가예치적신호;통과가법기장쌍로신호진행첩가;경채양장신호송입MSP430단편궤진행FFT쾌속부씨변환운산,재빈역내대파형신호적각개빈솔분량이급폭도등진행분석처리;통과단편궤지간적천구통신장처리결과송회주공제기병통과LCD액정진행결과현시.
In the system,a STC12C5A60S2 MCU as the main control er,supplemented by another piece of the same type of SCM,to generate two signals whose amplitude, phase,frequency,duty ratio and other parameters can be preset. Dual arbitrary superposition of the signal can be achieved through the adder,then by sampling,the sampling signal is sent to the MSP430 MCU to take FFT Fast Fourier transform operation,so we can analyze and process the frequency components and amplitude of the waveform signals in the frequency domain,and then through the serial communication of between the MCU,the results are sent to the main control er and are showed by LCD liquid crystal display.
