基于MAX1452的应变测试系统前端模块的设计

根据当前飞机机载测试产品中分布式网络化应变测试系统的要求设计了一种前端多通道的通用应变采集模块。使用Maxim公司高度集成的单传感器调理芯片MAX1452通过软件实现了激励电压提供,电路偏置,增益调节和温度修正等飞机应变信号测试所必需的功能。该采集模块实际应用表明,在高精度采集下实现了各应变采集通道的完全独立,也同时实现了其体积和功耗相当微小的特点,其通过测试网络系统可以安装在对空间要求比较严格的飞机各个部位。

Design of strain testing system front-end module based on MAX1452

In order to satisfy the requirement of the aircraft networked strain test system,the design of front-end acquisition module is designed.MAX1452 provides designers with a convenient,fast design.The front-end conditioning circuit of strain acquisition module by using the MAX1452,can provide excitation voltage,offset voltage,PGA and temperature correction by software.The experiment and application show that this acquisition module can have every channel independently and good performance,and achieve the design requirement.