微型弹载冲击信号记录仪设计

A miniature missile-borne shock signal recorder based on eMMC memory is designed to meet the requirement of high-speed shock signal measurement during projectile launch and penetration. The recorder uses FPGA as the main control chip to control a high-speed A/D converter to realize high-speed acquisition of 4-channel shock sensor signals, and writes to the eMMC storage unit through the SRAM buffer. The recorder can realize 4-channel, 10 MS/s sampling rate analog signal acquisition and can store 80 MB/s data in real time. At the same time, it has the advantages of small size and low power consumption, which is beneficial to high overload protection. The test results show that the recorder can completely record about 30 000 g peak and 22 μs pulse width high-speed shock signal waveform with a test error of only 5.36%, can meet the high-speed shock signal measurement accuracy requirements.