基于FPGA和单片机的孔径测量系统

Aperture Measurement System Based on FPGA and MCU

针对当前孔径测量系统检测速度不够高和不可灵活定制的不足,课题组提出了基于现场可编程逻辑门阵列(Field Programmable Gate Array, FPGA)和单片机的孔径测量系统。课题组设计了孔径测量系统的硬件结构,介绍了该系统的核心模块控制原理;采用电荷耦合元件(charge-coupled device, CCD)线阵传感器实现了光电信号的转换,设计了激光信号产生模块、基于FPGA的时序驱动模块、AD转换模块和电源管理模块;利用STM单片机实现算法优化及数据处理与显示;最后,设计了孔径测量系统的软件,并制作了样机。应用结果表明:该系统不仅具有精度高、成本低等特点,且可以模块化设计,易拓展,能有效提高孔径测量系统的检测速度,可根据实际生产需求灵活定制。

Aiming at the shortcomings of low detection speed and inflexible customization of the current aperture measurement system, an aperture measurement system based on FPGA and MCU was proposed. The hardware structure of the aperture measurement system was designed and the core module control principle of the system was introduced. The photoelectric signal conversion was achieved by CCD linear sensor, and the laser signal generation module, timing drive module based on FPGA, AD conversion module and power management module were designed. Finally, the algorithm optimization and the data processing and display were realized by STM MCU.The software of aperture measurement system was designed and a specific prototype was fabricated. The application results show that the system not only has the characteristics of high precision and low cost, but also can be modular designed and easy to expand. It can effectively improve the detection speed of the aperture measurement system and can be flexibly customized according to the actual production requirements.