航空相机内场检测仪设计研究

发布时间：2018-01-07 15:13

本文关键词：航空相机内场检测仪设计研究　出处：《吉林大学》2016年硕士论文　论文类型：学位论文

更多相关文章： 诊断系统 数字化 便携式 检测仪

【摘要】：随着航空摄像产品的广泛应用,航空侦察设备工作时恶劣的载机条件和环境条件,会引起相机产生各种故障,为保证相机正常工作,在地面对相机进行功能检测及故障定位非常必要。内场检测仪的研制就是为了故障及时定位、并采取措施进行维修。而进行研发的新型专用设备,也是航空CCD相机技术成果的延伸和提高,进一步提升设计理念和综合设计能力。内场检测仪技术水平含量非常高,本质上是个诊断系统。首先对相机各个子系统、部件、组件关键节点进行采样,获取大量咨讯,方案中采用硬件计算机主体和外围采集设备相结合完成被测产品的数据接收已满足采样多样化的要求。其次根据技术要求建立故障模型及判据(数字化)进尔进行诊断、决策、定位和故障排除。通过软件顶层设计和故障模型的建立,判断被检测产品状态。采用数字化设计并结合良好的人机交互界面,方便升级和后续产品的融合。采取模块化设计,软件设计为系统重要组成部分,软件设计开发需要有衔接性,便于融合;诊断系统的应用有广泛的发展前景,可以发展自适应系统降低故障率,提高可靠性。有些产品所谓“电保护”就是按照自适应理念设计,取得预期结果。其单变量的自适应系统也比较简单(判据模型)容易实现。组成特点:硬件包括计算机(机芯)、屏显、机壳(便携式)、数字/模拟接口、输出设备、电磁兼容性机壳具有屏蔽接地接口。软件包括软件顶层设计、上电/指令自检的初级检测方式、模拟上级任务管理计算机对相机指令控制功能的检测、故障排查定位、良好的人机关系与界面设计、软件输出接口。输出方式为打印输出、刻录输出、屏显输出、接口输出等。检测仪工作原理是建立故障模型,并通过采集到的数据进行检测判断,使其故障检测率不低于80%,故障隔离率不低于90%,自检虚警率不超过2%。进而通过自检测和4级检测仪,在内场能完成可更换单元(SRU)故障检测和隔离,将故障隔离到1个SRU的概率不低于80%,隔离到2个SRU的概率不低于90%,隔离到3个SRU的概率为100%。主要功能如下:模拟载机任务管理计算机的管理控制功能;模拟载机任务管理计算机向管控发送相关飞行诸元信息;模拟载机任务管理计算机给相机装定任务参数诸元信息;对被测品模拟供电;具有维护自检测功能;在内场对可更换单元(SRU)进行故障检测和隔离;在内场可以对相机工作状态进行监控,通过屏显中的界面窗口显示标识符和图形;显示高分辨率数字图像;具有测试相机主要技术参数的功能。内场检测仪的研发使数字化和军事现代设备的应用得到了有效推广,并对设备使用起到了有效的保障作用。
[Abstract]:With the wide application of aerial camera products, the bad loading and environmental conditions of aerial reconnaissance equipment will cause a variety of camera failures, to ensure the normal operation of the camera. In the face of the camera function detection and fault location is very necessary. The development of the infield detector is to locate the fault in time and take measures to carry out maintenance and research and development of a new type of special equipment. It is also the extension and improvement of aeronautical CCD camera technology to further enhance the design concept and comprehensive design capability. The technical level of the infield detector is very high. In essence, it is a diagnostic system. Firstly, every subsystem, component and key node of camera are sampled and a lot of information is obtained. In the scheme, the data receiving of the product under test is accomplished by combining the hardware computer main body with the peripheral acquisition equipment. Secondly, the fault model and criterion (digitization) are established according to the technical requirements. To make a diagnosis. Decision, location and troubleshooting. Through the top-level design of software and the establishment of fault model, the detected product status is judged. The digital design is adopted and a good human-computer interface is combined. The software design is an important part of the system. The software design and development need to be cohesive and easy to integrate. The application of diagnostic system has a broad development prospect, it can develop adaptive system to reduce failure rate and improve reliability. Some products so-called "electrical protection" is designed according to adaptive concept. The expected results are obtained. The single variable adaptive system is also easy to realize (criterion model). The components of the system are as follows: the hardware includes computer, screen display, shell (portable, digital / analog interface). Output equipment, electromagnetic compatibility housing with shielding grounding interface. Software includes software top-level design, power on / command self-testing of the primary detection. Simulation superior task management computer to the camera command control function detection, troubleshooting location, good man-machine relations and interface design, software output interface. The output mode is print output, burning output. Screen display output, interface output, etc. The working principle of the detector is to establish a fault model, and through the data collected to detect and judge, the fault detection rate is not less than 80 and the fault isolation rate is not less than 90%. The false alarm rate of self-detection is not more than 2. Furthermore, through self-detection and 4-level detector, the fault detection and isolation of replaceable unit can be completed in the inner field, and the probability of isolating the fault to 1 SRU is no less than 80%. The probability of isolating to 2 SRU is not less than 90, the probability of isolating to 3 SRU is 100. The main functions are as follows: the management and control function of the task management computer; The simulation mission management computer sends the relevant flight data information to the control and control system. The task management computer simulates the data information of setting task parameters for the camera. Analog power supply to the tested products; Has the maintenance self-detection function; Fault detection and isolation of the replaceable unit SRU in the inner field; The camera working state can be monitored in the inner field, and the identifiers and graphics can be displayed through the interface window in the screen display. Display high-resolution digital images; It has the function of testing the main technical parameters of the camera. The research and development of the inner field detector has effectively popularized the application of digital and modern military equipment, and has played an effective role in ensuring the use of the equipment.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：V245.6

【参考文献】