一种集中分散式数据采集系统的设计

本文设计了一种适用于车辆发动机箱体，汽缸盖等大型零部件应力场实时测量的测试仪。其特点是：整个系统采用集散式结构，由便携式计算机，便携式母系统，微型子系统结构。微型子系统主要完成信号的调理并可直接放在被测体上，测量全过程在计算机和母系统的控制下完成。系统操作简便智能化程度高，具有自动增益自动校准，显示，打印及数据处理等功能；

the Concentration-distribution Test Macro.

In this paper a type of testing device which is suitable for stress field real-time measurement of vehicle engine case and cylinder cap . Its features list as follows: the Whole system adopts concentration-distribution structure which is made of portable computer ,portable mother-system and micro-subsystem. The micro-subsystem can be placed on the object and finish signal conditioning. The whole process is fulfilled under control of computer and mother-system .The whole system has functions of simple operation ,automatic gain adjustment ,automatic calibration ,display printing and data processing .It can also measure several points and setup64-channels.Maxinum acquisition rate can reach 1600000sps. A/D converter is 8 bits. Its capacity is large, say, the basic storage is 4M bits. Furthermore , it can apply for measurement of temperature, pressure and force with the change the subsystem .