摘要
设计一种用于磁传感器的三路24位高精度数据采集系统,要求三路噪声均低于20μV,系统总功耗低于1 mA。系统采用三片AD7192同步进行A/D转换,采集和处理磁传感器前置模拟电路的信号,微控制器采集所得的数据,处理后发送到上位机进行处理分析。软件仿真及硬件测试结果表明,该系统完全达到了设计要求。
A kind of three channels and 24 bits high-precision magnetic sensor data acquisition system was designed, it is re quired that the noise of all channels are less than 20 μV and the power consumption of the system is lower than 1 mA. In this sys tem , three AD7192 data acquisition chips are slected to do the A/D conversion ,they can collect and analysis signals,after that, micro controller collect the data,in that, they are analyzed. As all this,data are sent to the PC for subsequent processing analysis. Software simulation and hardware test shows that the system quite fit the bill of high accuracy.
出处
《电子技术应用》
北大核心
2014年第5期75-78,共4页
Application of Electronic Technique
