基于dsp的多通道數(shù)據(jù)采集電路.rar
基于dsp的多通道數(shù)據(jù)采集電路,基于dsp的多通道數(shù)據(jù)采集電路4500多字 10頁摘要:提出了一種基于dsp的多通道數(shù)據(jù)采集電路的設(shè)計方案。該方案采用硬件高速鎖相環(huán)電路控制多通道a /d轉(zhuǎn)換器,使1個周期的采樣點總數(shù)不變,但這個數(shù)值可調(diào)。然后,脈沖通過調(diào)理,且通過一種特殊的電路進(jìn)行推遲再進(jìn)入cpu. 這樣, cpu就可以處理這些信號,同時也避開了由元...
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基于DSP的多通道數(shù)據(jù)采集電路
4500多字 10頁
摘要:提出了一種基于DSP的多通道數(shù)據(jù)采集電路的設(shè)計方案。該方案采用硬件高速鎖相環(huán)電路控制多通道A /D轉(zhuǎn)換器,使1個周期的采樣點總數(shù)不變,但這個數(shù)值可調(diào)。然后,脈沖通過調(diào)理,且通過一種特殊的電路進(jìn)行推遲再進(jìn)入CPU. 這樣, CPU就可以處理這些信號,同時也避開了由元器件產(chǎn)生的毛刺。這樣保證了電路的同步整周期采樣,實現(xiàn)了多路數(shù)據(jù)的采集。同時,在仿真軟件里對部分關(guān)鍵電路進(jìn)行了仿真,然后,又在實際的完整電路板上再次驗證了整個設(shè)計,其效果好。
關(guān)鍵詞:多通道;鎖相環(huán);放大電路
C ircu it Design ofMulti2channel Da ta Sampling Ba sed on DSP
Abstract:A method of circuit design ofmulti2channel data samp ling based on DSP was p roposed. A high speed PLL circuit was adop ted to control the multi2channelAD convert, so the number of samp ling point in a period was invariable. But it was ad2 justable. After that the pulse would be adjusted, and postponed by a special circuit. Then it went into CPU, and the CPU dealt with it, and avoided the burrswhich were created by the components. Imp lemented the synchronous samp ling in a whole period, and the multi2channel data samp ling. Meanwhile, some key componentwas simulated in simulation software. The whole real cir2 cuit is validated, and the performance of the circuit is perfect.
Key words:multi2channel; PLL; amp lifier circuit
參考文獻(xiàn):
[ 1 ] 李廣弟,朱月秀,王秀山. 單片機(jī)基礎(chǔ). 北京:北京航空航天大學(xué)出版社
[ 2 ] 黃開長,劉和平,鄧力,等. 同步數(shù)據(jù)采集技術(shù)在電力系統(tǒng)中的應(yīng)用. 儀器儀表學(xué)報
4500多字 10頁
摘要:提出了一種基于DSP的多通道數(shù)據(jù)采集電路的設(shè)計方案。該方案采用硬件高速鎖相環(huán)電路控制多通道A /D轉(zhuǎn)換器,使1個周期的采樣點總數(shù)不變,但這個數(shù)值可調(diào)。然后,脈沖通過調(diào)理,且通過一種特殊的電路進(jìn)行推遲再進(jìn)入CPU. 這樣, CPU就可以處理這些信號,同時也避開了由元器件產(chǎn)生的毛刺。這樣保證了電路的同步整周期采樣,實現(xiàn)了多路數(shù)據(jù)的采集。同時,在仿真軟件里對部分關(guān)鍵電路進(jìn)行了仿真,然后,又在實際的完整電路板上再次驗證了整個設(shè)計,其效果好。
關(guān)鍵詞:多通道;鎖相環(huán);放大電路
C ircu it Design ofMulti2channel Da ta Sampling Ba sed on DSP
Abstract:A method of circuit design ofmulti2channel data samp ling based on DSP was p roposed. A high speed PLL circuit was adop ted to control the multi2channelAD convert, so the number of samp ling point in a period was invariable. But it was ad2 justable. After that the pulse would be adjusted, and postponed by a special circuit. Then it went into CPU, and the CPU dealt with it, and avoided the burrswhich were created by the components. Imp lemented the synchronous samp ling in a whole period, and the multi2channel data samp ling. Meanwhile, some key componentwas simulated in simulation software. The whole real cir2 cuit is validated, and the performance of the circuit is perfect.
Key words:multi2channel; PLL; amp lifier circuit
參考文獻(xiàn):
[ 1 ] 李廣弟,朱月秀,王秀山. 單片機(jī)基礎(chǔ). 北京:北京航空航天大學(xué)出版社
[ 2 ] 黃開長,劉和平,鄧力,等. 同步數(shù)據(jù)采集技術(shù)在電力系統(tǒng)中的應(yīng)用. 儀器儀表學(xué)報
