高速弹丸位置坐标自动测量系统设计

Design of automatic measurement system of high-speed projectile position

为了精确测量高速弹丸穿越光幕靶瞬间的位置坐标,设计一种基于FPGA加DSP的实时图像处理板卡,采用处理板卡与嵌入式软件算法相结合的方式组成高速弹丸位置坐标自动测量系统。该系统可以设置相机面阵和线阵工作,使测量前端自动互瞄、自动组成光幕靶,提高系统自动化程度。设计基于FPGA的SATA硬盘阵列控制方法,保证高速图像的实时记录和回放。利用FPGA实现的PCIe接口保证上位机与板卡数据交换和通信的实时性。实验结果表明,本系统能够自动完成测量前的准备工作,高速弹丸的捕获概率超过99%,以中心点为原点的200mm直径范围内的测量精度优于1mm。本系统能够满足高速弹丸位置坐标的测量需求,具有捕获率高、精度高、实时性好等特点,有很高的实用价值。

In order to measure the transient coordinates that high-speed projectile goes through the screen accurately, a real-time image processing card based on FPGA and DSP is designed. We designed an automatic measurement system of high-speed projectile location coordinates by using processing card and embedded software algorithm. We can set camera work at planar array mode or linear array mode, we also let measuring front-end do automatic mutual alignment, do automatic composition of laser screen target. We improve the degree of automation of the system and design a SATA hard disk array control method based on FPGA, so that the high speed real-time image can he recorded and re- played. We use FPGA to implement the PCIE interface to ensure the real-time data exchanging and communication between host computer and the card. The experimental results show that this system can automatically complete the preparatory work before measurement, high-speed projectile captureprobability is close to 100%, the measurement to the center of the range of 200 mm in diam. of high-speed project cision, real-time and e location coordinates. It accuracy is better than 1 mm within the point of origin This system can meet the requirement in measurement has characteristics such as high capture rate, high pre- so on. It has very high practical value.