基于STC单片机和CPLD的声波信号采集装置研制

Development of Multi-wave Acoustic Wave Acquisition Devices on Seabed Sediments

为研究海底沉积物的声学特性参数,提出一种以STC12C5A60S2为控制核心的声波信号采集系统;具备实时声波信号采集的功能,实现4通道的数据采集;并设计了信号的放大、滤波、衰减、单端转差分变换电路,对接收的信号进行ADC处理。为避免数据丢失的风险,设计了SD卡永久存盘电路。采用XL95288作为采样系统的辅助控制器,降低了系统的功耗,提高了工作效率。测试结果表明,该电路性能良好,可实现对声波测量的要求。

In order to study the acoustic parameters of seafloor sediments, an acoustic signal acquisition system based on STC12C5A60S2 is proposed. With real-time acoustic signal acquisition capabilities, theacquisition system can achieve 4-channel data acquisition. And designed the signal amplificationcircuit, filteringcircuit,attenuationcircuit, single-ended to differential conversion circuit, processed the received s order to avoid the risk of data loss, SD card is ignal. In designed to save the circuit permanently. The XL95288 is used as a sampling system auxiliary controller, reducing system power consumption, improve work efficiency The test results show that the circuit performance is good, can achieve the requirements of acoustic measurement.