昆虫复眼具有小型化、多孔径、大视场、高灵敏度等特点,开展仿生复眼在成像探测技术方面的应用具有重要的意义.介绍了复眼的分类、结构和成像特点,结合当前仿生复眼的研究进展和技术水平,对大视场复眼成像探测系统的结构进行了探索和研究,得到了三种适合用于探测系统的复眼探测结构,对其结构形式进行了介绍,对其优缺点进行了分析,并选取其中一种较好的方案进行了详细设计.所设计的复眼由37个子眼组成,总视场150°.对仿生复眼在光学成像探测方面的应用进行了有益的探索,具有一定的前瞻性和参考价值.
针对传统激光功率计存在测量精度低、成本高、功耗高、便携性差等问题,设计了一种基于ARM的便携式高精度激光功率测量系统.该系统采用ARM作为核心控制芯片,实现模数转换、信号采集、量程自动切换、数据处理、LCD显示屏控制、数据传输等功能.该系统采用两节5号干电池供电,体积小、携带方便,并可通过USB接口将测量结果上传至计算机.该激光功率计不仅实现了激光功率的高精度测量,而且具有成本低、功耗低、便携性强等优点,非常适合在光信息、光通信领域及其相关科学实验和教学中使用.
For the problems of structure complexity,big volume and high cost of traditional data acquisition systems,a low-cost and high-accuracy data acquisition system based on ARM was designed.The design scheme of the system is given.The hardware implementation scheme,anti-interference measures and control time sequence of data acquisition system are elaborated.The working time sequence of high accuracy parallel A/D is analyzed emphatically.The practical application shows that the system has the characteristics of high accuracy,small size,low cost and strong working ability,and has a high pragmatic value and a reference for the design of similar systems.
Detecting ship wake is a new method of indirect detect ship and submarine,which has broad application prospects.Design and implementation of detecting system for ship wake,which based on the laser illuminate the air bubbles in the ship wake and measure the scattered light′s spatial spectrum intensity distribution.The system adopts the four-level pipeline structure,which consists of CCD optical signal acquisition,analog to digital converter(A/D) data acquisition,DSP processing and USB output data.The system has some advanced nature by good stability,high accuracy and good accurate.