基于CV1任意波形發(fā)生器的整體設計

基于CV1任意波形發(fā)生器的整體設計 Integrated Design of Arbitrary Waveform Generator Based on CV

摘要:利用LabWindows/ CVI虛擬測控軟件具有的超強實時數(shù)據(jù)采集和處理能力以及豐富的圖形用戶界面設計功能，開發(fā)了一個任意波形發(fā)生器編輯軟件系統(tǒng)。介紹了一種用AVR系列單片機ATmega8來控制“'GA實現(xiàn)的DDS電路，并用SRAM取代ROM中的任意一種波形信號發(fā)生器硬件的設計。用這種方法設計的波形發(fā)生器結(jié)構(gòu)簡單、造價成本低，且信號源輸出信號的分辨率高。
關鍵詞:波形發(fā)生器信號源單片機抽樣數(shù)據(jù)直接數(shù)字頻率合成

Abstract;By adoptingth esu periorpo werfulca pabilityfo rre al-timed ataa cquisitiona ndd atap rocessing,as w ela sth eri chG UIde signfu nctions provided IAbWindows/CVI virtual measurement and control software, an editing software system of arbitrary waveform generator is developed.The hardware design method of an arbitrary waveform generator is introduced, which, the DDS circuit is implemented controling FPGA with ATme single chip computer of AVR series, and replacing ROM with SRAM. The structure of the generator designed with this method is simple and low cost, in addition, the resolution of the output signal from the source is very high.