本文關(guān)鍵詞：航空相機(jī)內(nèi)場檢測儀設(shè)計研究　出處：《吉林大學(xué)》2016年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 診斷系統(tǒng) 數(shù)字化 便攜式 檢測儀

【摘要】：隨著航空攝像產(chǎn)品的廣泛應(yīng)用,航空偵察設(shè)備工作時惡劣的載機(jī)條件和環(huán)境條件,會引起相機(jī)產(chǎn)生各種故障,為保證相機(jī)正常工作,在地面對相機(jī)進(jìn)行功能檢測及故障定位非常必要。內(nèi)場檢測儀的研制就是為了故障及時定位、并采取措施進(jìn)行維修。而進(jìn)行研發(fā)的新型專用設(shè)備,也是航空CCD相機(jī)技術(shù)成果的延伸和提高,進(jìn)一步提升設(shè)計理念和綜合設(shè)計能力。內(nèi)場檢測儀技術(shù)水平含量非常高,本質(zhì)上是個診斷系統(tǒng)。首先對相機(jī)各個子系統(tǒng)、部件、組件關(guān)鍵節(jié)點(diǎn)進(jìn)行采樣,獲取大量咨訊,方案中采用硬件計算機(jī)主體和外圍采集設(shè)備相結(jié)合完成被測產(chǎn)品的數(shù)據(jù)接收已滿足采樣多樣化的要求。其次根據(jù)技術(shù)要求建立故障模型及判據(jù)(數(shù)字化)進(jìn)爾進(jìn)行診斷、決策、定位和故障排除。通過軟件頂層設(shè)計和故障模型的建立,判斷被檢測產(chǎn)品狀態(tài)。采用數(shù)字化設(shè)計并結(jié)合良好的人機(jī)交互界面,方便升級和后續(xù)產(chǎn)品的融合。采取模塊化設(shè)計,軟件設(shè)計為系統(tǒng)重要組成部分,軟件設(shè)計開發(fā)需要有銜接性,便于融合;診斷系統(tǒng)的應(yīng)用有廣泛的發(fā)展前景,可以發(fā)展自適應(yīng)系統(tǒng)降低故障率,提高可靠性。有些產(chǎn)品所謂“電保護(hù)”就是按照自適應(yīng)理念設(shè)計,取得預(yù)期結(jié)果。其單變量的自適應(yīng)系統(tǒng)也比較簡單(判據(jù)模型)容易實現(xiàn)。組成特點(diǎn):硬件包括計算機(jī)(機(jī)芯)、屏顯、機(jī)殼(便攜式)、數(shù)字/模擬接口、輸出設(shè)備、電磁兼容性機(jī)殼具有屏蔽接地接口。軟件包括軟件頂層設(shè)計、上電/指令自檢的初級檢測方式、模擬上級任務(wù)管理計算機(jī)對相機(jī)指令控制功能的檢測、故障排查定位、良好的人機(jī)關(guān)系與界面設(shè)計、軟件輸出接口。輸出方式為打印輸出、刻錄輸出、屏顯輸出、接口輸出等。檢測儀工作原理是建立故障模型,并通過采集到的數(shù)據(jù)進(jìn)行檢測判斷,使其故障檢測率不低于80%,故障隔離率不低于90%,自檢虛警率不超過2%。進(jìn)而通過自檢測和4級檢測儀,在內(nèi)場能完成可更換單元(SRU)故障檢測和隔離,將故障隔離到1個SRU的概率不低于80%,隔離到2個SRU的概率不低于90%,隔離到3個SRU的概率為100%。主要功能如下:模擬載機(jī)任務(wù)管理計算機(jī)的管理控制功能;模擬載機(jī)任務(wù)管理計算機(jī)向管控發(fā)送相關(guān)飛行諸元信息;模擬載機(jī)任務(wù)管理計算機(jī)給相機(jī)裝定任務(wù)參數(shù)諸元信息;對被測品模擬供電;具有維護(hù)自檢測功能;在內(nèi)場對可更換單元(SRU)進(jìn)行故障檢測和隔離;在內(nèi)場可以對相機(jī)工作狀態(tài)進(jìn)行監(jiān)控,通過屏顯中的界面窗口顯示標(biāo)識符和圖形;顯示高分辨率數(shù)字圖像;具有測試相機(jī)主要技術(shù)參數(shù)的功能。內(nèi)場檢測儀的研發(fā)使數(shù)字化和軍事現(xiàn)代設(shè)備的應(yīng)用得到了有效推廣,并對設(shè)備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.
【學(xué)位授予單位】：吉林大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號】：V245.6

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本文編號：1393092