摘要
介绍一种频率、幅值可控的波形发生器的设计方案,以MSP430单片机作为控制核心,直接数字合成(DDS)技术完成多功能高频正弦波、方波信号发生器,通过键盘选择输出的波形及其频率值和幅值,实现信号的数据处理和实时显示。该设计实现了信号的宽频率输出、波形的自动切换、100Hz频率步进和幅值可变的功能。测试结果表明,该系统输出信号频率精度高、幅值范围宽,波形清晰、精度高等特点,有较高的使用价值。
The article introduces a kind of controllable frequency, amplitude of waveform generator design, MSP430 single chip microcomputer as control core, the direct digital synthesis （DDS） technology to complete multi-functional high frequency sine, square wave signal generator, through the keyboard to select output waveform and its frequency and amplitude, signal data processing and real-time display. This design has realized the automatic switch signal output, wide frequency waveform, frequency of 100 hz step and amplitude variable function. Test results show that the system output signal frequency is high precision, wide range of amplitude, waveform and clear, high precision, etc, have higher use value.
出处
《科技视界》
2013年第5期76-77,共2页
Science & Technology Vision
