【摘要】：目前，測試技術向著自動化、多功能和數(shù)字化的方向發(fā)展。被測試設備及其測試策略越來越復雜，被測試設備接口數(shù)量與測試資源接口數(shù)量之間產生了難以匹配的矛盾。此外，現(xiàn)在測試技術正在由專用化向通用化發(fā)展，虛擬儀器技術很好地解決了在轉型過程中硬件平臺的通用性與軟件驅動的可移植性等問題。 本文設計的便攜式維護輔助檢測儀（PMA）是基于PC/104-Plus總線和虛擬儀器技術，可自動完成對機載電子設備的數(shù)據(jù)采集、處理與測試。同時，該檢測儀內嵌交互式電子技術手冊（IETM），能夠滿足自動測試設備數(shù)字化與無紙化的要求。 便攜式維護輔助檢測儀主要包括測試平臺和接口切換陣列適配模塊。測試儀平臺主要完成對機載電子設備的數(shù)據(jù)采集與處理，由基于PC/104-Plus總線的功能板卡自我堆棧而成，，符合便攜性和低功耗的要求。采用PC/104-Plus工業(yè)控制模塊，主要功能板卡分別完成模擬量的數(shù)據(jù)采集、數(shù)字量信號的檢測、電壓測量、電流測量、阻抗測量、1553B信號測量和RS422總線通訊。測試軟件編程平臺采用Windows XP結合NI的虛擬儀器的集成開發(fā)軟件系統(tǒng)LabWindows/CVI。自制接口切換適配陣列模塊，該陣列模塊完成輸入信號的調理，測試節(jié)點與測試通道的切換的功能。接口適配模塊主要解決了被測試設備接口數(shù)量與測試資源接口數(shù)量不匹配的矛盾。 針對機載電子設備信號的特點，完成接口適配器中開關矩陣的通道切換功能測試，調理電路測試和各板卡的功能性測試。經測試，檢測儀系統(tǒng)實現(xiàn)了所有設計的功能，性能穩(wěn)定可靠，下一步將到現(xiàn)場與機載電子設備對接聯(lián)調。
[Abstract]:At present, testing technology is developing in the direction of automation, multi-function and digitalization. The equipment under test and its testing strategy are becoming more and more complex, and there is a contradiction between the number of interfaces between the tested equipment and the number of test resource interfaces. In addition, the testing technology is developing from specialization to generalization. Virtual instrument technology solves the problems of hardware platform generality and software-driven portability in the process of transformation. The portable maintenance assistant detector (PMA) designed in this paper is based on PC/104-Plus bus and virtual instrument technology. It can automatically complete the data acquisition, processing and testing of airborne electronic equipment. At the same time, the embedded interactive electronic technology manual (IETM), can meet the requirements of digitization and paperless of automatic test equipment. Portable maintenance assistant detector mainly includes test platform and interface switching array adaptation module. The test instrument platform mainly completes the data acquisition and processing of the airborne electronic equipment, which is made up of the self-stack of the function board based on PC/104-Plus bus, which accords with the requirements of portability and low power consumption. Using PC/104-Plus industrial control module, the main function board card completes analog data acquisition, digital signal detection, voltage measurement, current measurement, impedance measurement, 1553B signal measurement and RS422 bus communication respectively. Integrated Development of Virtual instrument based on Windows XP and NI on Test Software programming platform LabWindows/CVI. The self-made interface switch adaptor array module completes the adjustment of the input signal and the switch between the test node and the test channel. The interface adaptation module mainly solves the contradiction between the number of interface of test equipment and the number of interface of test resource. According to the signal characteristics of airborne electronic equipment, the channel switching function test of switch matrix in interface adapter, the test of conditioning circuit and the functional test of each board card are completed. After testing, the detector system realizes all the designed functions, and the performance is stable and reliable. The next step will be to connect and adjust with the airborne electronic equipment on the spot.
【學位授予單位】：南京航空航天大學
【學位級別】：碩士
【學位授予年份】：2012
【分類號】：TP302

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