关于利用Hydra系列数据采集器检测环境设备的探究

The Research on the Equipment Using Data Collector of Hydra Series for Testing the Environment

论文根据环境温湿度装置检测过程中的特点,提出了一种将Hydra系列数据采集器应用于环境温湿度试验设备检测的方法,对其他计量测试参数的检测分析也有一定参考价值。

A digital data acquisition system is designed and implemented based on Xilinx Spartan-3 FPGA （Field programmable gate arrays） chip. In this system, a DDS （Direct digital synthesizer） parameterized in FPGA, together with the external D/A chip and other circuits, produces excitation signals. An embedded MCU is employed to control multiplexer. PGA gain and transfer data with host PC. High speed A/D and digital phase sensitive demodulator （PSD） are both implemented with hard wire logics. This system has flexible structure, high measurement precision and speed.