Design and realization of strain measurement system based on FPGA and ARM

Considering the disadvantages of traditional dynamic strain measurement system such as large outlines, inconvenient usage and low kinetic accuracy, this paper studied and implemented a new dynamic strain measurement system based on FPGA and ARM. ARM with WINCE6.0 operating system is the control core of this system; it can modify the sampling parameters in FPGA with great flexibility. FPGA provides an asynchronous FIFO, which is used as the buffer of ADC and ARM. Each part of the system relys upon the SPI bus for the high-speed data transfer. The system also can be connected to the upper computer for data process and data analysis through the network communication with TCP/IP protocol. According to the experiment results, this measurement system is of high precision and good real-time performance, it can accomplish the strain data acquisition task perfectly in a variety of test environments.