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模拟量参数采集在飞行试验中的需求是非常普遍的,模拟量电压测量模块是机载通用采集器中的重要模块。本文主要介绍了能够满足机载通用采集器背板总线要求的通用模拟量电压测量模块的设计方案及实现过程。该模拟量电压测量模块中模拟电路采用了高度集成的高精度仪表运放电路,设计了4阶巴特沃兹模拟滤波器;数字电路使用了当前比较新的FPGA和DSP电子设计技术,具有结构简单,性能稳定,采集精度高等优点。
The demand for analog parameter acquisition in flight tests is very common. The analog voltage measurement module is an important module in the airborne general purpose collector. This article mainly introduces the design scheme and realization process of universal analog voltage measurement module that can meet the requirements of backplane bus of airborne general purpose collector. The analog voltage measurement module uses a highly integrated analog circuit high-precision instrumentation op amp circuit, the design of the 4th order Butterworth analog filter; digital circuit using the current relatively new FPGA and DSP electronic design technology, has a simple structure , Stable performance, high precision acquisition advantages.