Based On Embedded Technology, Dynamic Strain Data Acquisition System

Considering the disadvantages of conventional dynamic strain measurement system such as large outlines, inconvenient usage and liable to various interferences, a new dynamic strain measurement system was designed based on the modern embedded computer technology and strain measurement technology, which is the integration of signal conditioning, data acquiring and data issuing.The hardware of this measurement system is built based on the advanced 32Bit ARM9 processor, which is the controller of signal condition part, A/D conversion part, data memory part and others. And the data transmission and communication is realized via the Ethernet interface. Based on embedded Linux operation system, the software part of this measurement system is composed of the realization of monitor and control system in B/S mode by building embedded Web Server and the operatation of the hardware part in the CGI program by calling hardware drivers. Users may access this measurement instrument for setting sample parameter, startting a sample, viewing data curve and downloadling data directly by any web brower whitout a special application software.Based on system debugging and experiments, it is proved that the system has basically achieved the requiremens put forward.