| The hardware platform of supersonic projectile' shock wave acquisition and trajectory calculation is used to collect and record the original acoustic signals of supersonic projectiles,and to process the collected data,finally,the running track of the projectiles is displayed on the touch screen,it can not only display the trajectory of the projectile,but also can control the working state of the hardware platform,so as to achieve the purpose of human-computer interaction.Using the method of acoustic measurement and positioning,overcoming the disadvantages of traditional optical measurement and positioning,and has the advantages of all-time and all-weather.In the paper,according to the application requirement of measuring the supersonic projectile' trajectory,a set of hardware platform is designed,which is used to collect,store and real-time trajectory calculation the data of the supersonic shock wave.The main contents include the hardwire platform circuit design,the software design and the analysis of hardware platform test.In the hardware platform,the OMAP-L138 processor is applied as the master control chip.Among them,the DSP core is used to control the analog to digital conversion chip for data acquisition and processing of the collected data,the ARM core is used to write the original data and the corresponding time information to the SATA disk,and display the original data and the processed data on touch screen.Under laboratory conditions,the each part module results of the functional verification of the hardware platform is given,and the overall performance is tested.After the actual analysis of the test results,the hardware platform designed in this paper meets the technical requirements and can be put into use.Finally,this paper puts forward the following improvements,which provides a reference for the further study of the hardware platform of supersonic projectile' shock wave acquisition and trajectory calculation. |
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