摘要
针对部分特殊场合对频谱分析仪使用需要多通道、便携等需求,设计了一种通道数最多支持64通道的手持多通道频谱分析仪。该频谱分析仪以美国德州仪器公司推出的DSP+ARM双核CPU芯片OMAP-L138为平台,采用多通道A/D转换器进行数据采集,使用QT开发GUI界面对系统进行控制和数据显示,能实现频谱分析、失真测量、信号采集、多通道数据对比分析等功能。测试结果表明:本设计能完成信号采集及频谱分析功能,并拥有较小的采集频率误差,误差值≤1%。
Aiming at demand of some special occasions for multi-channel, portable spectrum analyzer, a handheld spectrum analyzer is designed to support the maximum number of 64 channels. The spectrum analyzer using Texas instruments introduced DSP and ARM dual-core CPU chip OMAP - L138 as a platform, using multi-channel A/ D converter for data acquisition, using QT designed GUI interface to control the system and the data display that can realize the frequency spectrum analysis, distortion measurement, signal acquisition, multi-channel data contrast analysis, and other functions. Test results show that this design can achieve signal acquisition and spectrum analysis function, and has smaller acquisition frequency error, error value is 1% or less.
出处
《电子设计工程》
2014年第11期130-133,共4页
Electronic Design Engineering
基金
2011年广东省重大科技专项项目(2011A080802008)
广东省高校优秀青年创新人才培养计划资助项目(LYM11057)