哈特曼传感器仿真平台设计

为了实现波前处理机脱离以哈特曼传感器为核心的波前探测光学系统,独立地进行处理机算法的设计和验证,采用软、硬件结合的方式,设计了哈特曼传感器输出图像仿真平台。上位机仿真监控软件采用VC 和MATLAB 联合编程,根据哈特曼传感器工作原理和结构,仿真生成哈特曼图像,并完成与硬件电路交互命令和传输数据的功能。以FPGA 为核心的主控电路,完成发送响应信号、接收监控软件发送的读写指令、存储数据的功能,并根据实际CCD 时序实时输出标准Camera Link 接口格式的图像数据。经验证,软件仿真图像和实际输出相符;仿真平台输出表明硬件时序正确,满足设计速度要求。

Simulation platform of Hartmann-Shack wavefront sensor

Wavefront controller requires the datum from Adaptive Optical systems (AOs) based on Hartmann-Shack wavefront sensor. In order to independently design and verify the algorithms in the wavefront controller, a platform to simulate the Hartmann sensor images was designed with a combination of hardware and software. The PC monitor software which is programmed by VC2010 and MATLAB generates the Hartmann output images with different parameters according to the structure and working principle of H-S (Hartmann-Shack wavefront sensor). Meanwhile, it transfers commands and data mutually in the hardware circuit. The hardware platform based on FPGA is used to receive instructions, store data, output responding signals and images in standard Camera Link format in real-time according to the CCD timing. The verified and output results show that the simulated images conformed to the principle of H-S wavefront sensor, and the timing sequence and the speed fulfill the command.