高速摄像技术在火箭橇头罩分离试验中的应用

火箭橇头罩分离试验中,需要采集头罩分离前后的高速图像。由于火工品爆炸时间短,振动与冲击环境恶劣,普通摄像设备难以满足要求。文章介绍了一种小型化、低功耗、能够适应强振动与冲击环境的高速摄像系统,该系统由具有Camera Link接口的工业相机、图像采编单元和数据存储单元组成,图像采编单元对工业相机图像数据进行编码,并通过LVDS接口传输至数据存储单元;数据存储单元使用FPGA控制SATA接口固态硬盘实现无损图像数据的实时存储。通过减振和自动调光设计,此系统能够适应强振动与冲击环境,并能自动快速适应各种光照环境,已成功应用在某火箭橇头罩分离试验中,实现了分辨率为800×600、帧率为120帧/s的连续图像存储,存储时间不低于30 min,存储的图像数据完整可靠。

Application of high-speed image acquisition technology in rocket sledge head cover separation experiment

High-speed images near separation are required in the rocket sledge head cover separation experiment. Due to the short time of explosion, the harsh environment of vibration and shock, common cameras cannot work properly. A small and low power high-speed image acquisition system is proposed, which is applicable in the vibration and shock environment. This system consists of a Camera Link interfaced camera, an image acquisition coding unit, and a data storage unit. The image acquisition and coding unit acquires images from the Camera Link interfaced camera and codes the image, and transmits the image to the data storage unit by the LVDS interface. A SATA interface solid-state hard disk is used in the data storage unit. By vibration absorption design and automatic light compensation, the system can work properly in a high shock environment, and can adapt to any light environment. The high-speed image acquisition system has been applied successfully in the rocket sledge head cover separation experiment. The resolution of 800×600, with 120 frame/s mono chrome camera is achieved. The saving time is no less than 30 minutes, and the image data is integral and reliable.