【摘要】 采用Cirrus公司的地球物理测量芯片CS3301A、CS5373A和CS5378设计了一种单通道微地震数据采集器,该采集器采用GPS模块获取经、纬度坐标和精确时间,采用大容量U盘存储数据文件,并以C8051F单片机作为处理器。该采集器的信号转换电路由程控放大器、24位ADC、Sinc+FIR+IIR多级数字滤波器等器件组成,其采样率可在1～2000之间选择。该采集器整体具有精度高、噪声低、功耗低的特点,适用于需要大量站点的微地震监测项目。更多还原

【Abstract】 A single-channel micro-seismic data acquisition system was designed out by using Cirrus chip CS3301A,CS5373A and CS5378.Take C8051F MCU as the processor,this data acquisition system adopts GPS-module to obtain latitude and longitude coordinates and precise time,adopts large-capacity U disk to do with data file storage.Consist of program-controlled amplifier,24-bit ADC and Sinc+FIR+IIR digital filters,the sampling rate of such data acquisition system can be 1~2000.This acquisition system has the following advantages:high accuracy,low noise,low power consumption and apply for the large number of micro-seismic monitoring project.更多还原