Design of Multi-channel High Speed Wide Dynamic Range Chamber Pressure Test System
In order to accurately measure the variation curve of the pressure in the fire gun chamber over time and evaluate the performance of the weapon,a multi-channel high speed and wide dynamic range chamber pressure testing system based on FPGA is designed in this paper,and the requirements of high speed,high resolution and instantaneous performance are studied.The system adopts 18-bit AD7606C chip to realize 8-channel synchronous acquisition,and the single channel sampling rate is up to 1MHz.Two-level cache is realized by FIFO and DDR to ensure reliable data transmission,and the data is timely transmitted to the upper computer for processing and display through PCIe bus in DMA transmission mode.The experimental results show that the system can satisfy the multi-channel acquisition with 1MHz sampling rate,the dynamic range can reach 100dB,the bus transmission speed can reach 3GB/s,the operation is stable,and it has practical application value.
chamber pressureFPGAhigh resolutionAD7606CPCIedynamic range
万方数据
维普
