摘要
设计了以通用型数字信号处理器DSP芯片为主体的数据采集和预处理电路。采集到的信号经调节电路进行滤波,幅度变换之后,接入并行A/D芯片THS10024。经A/D变换后的数字信号接入DSP芯片TMS320VC5402,在C5402中进行预处理后经多通道缓冲串口与PC机串口(RS-232)相连送入PC机,然后通过自行编写的软件把接收到的数据文件进一步处理。在硬件设计上充分考虑了分析仪器的共同特征,在通用型数据采集方面有一定的参考价值。
The design of data acquisition and pretreatment system based on DSP is introduced. After sampling, the circuit executes filter algorithms and range changes, then to A/D chip THS1002. After A/D converting, digital signals are guided to DSP chip TMS320VC5402 and are pretreated, then guided to PC through McBSP for farther treatment. On design of hardware, the common characters of analysis instruments are full considered. So the work exhibits values for reference at the data acquisition aspect.
出处
《现代科学仪器》
2006年第6期40-43,共4页
Modern Scientific Instruments
基金
吉林省条件财务处基金资助项目2001101号。
