Design And Implementation Of Shock Wave Overpressure Test System Based On FPGA+ARM

With the development of new weapons,the accurate evaluation of weapon performance is very important.Shock wave is the main lethal factor of ammunition explosion,and the size of lethal power becomes the focus of research.In recent years,data acquisition system is gradually used in shock wave overpressure test.The breakthroughs in integrated electronics and software systems provide a good basis for the development of data acquisition systems.On the basis of the existing research,a shock wave overpressure data acquisition system is designed by using the dual core of FPGA and arm.The data acquisition system is small,easy to carry,fast acquisition speed and large data storage capacity.It can realize online acquisition and offline acquisition.Modular assembly,different modules can be tested separately,and easy to replace,which is conducive to the maintenance and subsequent upgrade of the data acquisition system.The shock wave overpressure test system based on FPGA + arm mainly includes the following modules: A / D conversion module,FPGA and arm control module and Gigabit network card module,which can be expanded according to the needs.The A / D acquisition module mainly converts the shock wave signal collected by the sensor,and the FPGA module mainly controls the A / D chip control,asynchronous FIFO reading and writing,DDR3 SDRAM data storage and Gigabit network card data transmission.The ARM module is responsible for the storage of data during offline acquisition and the communication with the host computer for data export and further analysis.After the hardware and software design of the data acquisition system was completed,feasibility tests were carried out to ensure that each module of the data acquisition system could operate normally.Finally,the data acquisition system was assembled and connected,and experiments were carried out to test the shock wave overpressure signal.