【正文】 tance and antiinterference requirements, choose the PC / 104 bus, and lower place machine and peripheral boards have to choose the PC / 104 module, in order to meet the aircraft airborne equipment requirement for the weight, volume, etc.2．condition monitoring system hardware design Based on the system overall design, the whole monitoring system hardware is shown in figure 1 USES hardware structure classifiers, by A P4 PC and A PC / 104 into A unit, under the lower machine and PC / 104 motherboard, peripheral interface card, and all kinds of circuit, and various peripheral interface card circuit including: 3 PC / 104 A/D conversion board, 2 pieces of PC / 104 digital I/O board, light 1 PC / 104 multifunction acquisition board, terminal board, signal disposal circuit switching circuit and field/ / 104 motherboards, PC / 104 A/D conversion board and PC / 104 digital light every I/O board implementation of engine simulation signal measure and frequency A/D conversion and collection, as well as to the amount of engine digital signal isolation, and signal data processing of collection, storage and / 104 multifunction acquisition boards and selfinspection/scene switching circuit is used to implement the system selfchecking and site data acquisition of switching, and sending selfchecking conditioning circuit to isolation, filtering, amplifying the signal, they transform into standard signal, and then into a are used to implement the data acquisition machine by sending data receiving, storage, display and alarm. monitoring system software design Of the condition monitoring system software module39。Data playback mode can be kept in a flight test data sent to the PC via a serial port munication, PC receives the data realtime display, including using digital watch display the data in the form of clear, at the same time also to simulate image, in the form of table of data, and in addition you can also choose to use display mode with the curve will be testing the state parameter of dynamic display, and finally to the received data stored in hard disk。 PC the data display mode including curve display, digital display, simulation table display and record the browsing。Redundant design.0. The introduction As the power source of the airplane flight, aircraft engine research is a very plex process, the aircraft engine test as the development of the three pillars (calculation, manufacture and test), one of its importance is selfevident, it turns out, mainly consisted of engine test, rather than by calculation and the development of an aircraft engine group, is flat, how we can decide the how developed horizontal aircraft engine manufacture, condition monitoring is an important examination method of engine performance, by condition monitoring and testing work is to adjust the engine performance and breakin, check the manufacturing or overhaul quality, finally gives the engine factory performance report purpose, therefore the accurate and reliable test method for state monitoring to ensure the quality of the engine has the vital we all know, the engine vibration and high noise in the process of work and the strong jamming signal, all parameters to the variety of the monitoring system puts forward higher with the improvement of engine performance, realtime monitoring of the parameters needed for condition monitoring is being more and more people continue to explore new testing technology for many years, to adapt to the increasingly development of engine test technology requirements.1. The condition monitoring system overall design The condition monitoring system is designed for a certain type of turbofan engine, the engine monitoring system of the input signal is part of a total of 17 analog, 3 road 16 way switch frequency and quantity, including 17 analog, 3 road frequency quantity through the signal conditioning circuit into a standard signal conditioning, to lower place machine。沈陽航空航天大學畢業(yè)設計外文翻譯學 院自動化學院專 業(yè)運載器這測試技術班 級94070301學 號2009040510011姓 名李萬峰指導教師崔建國負責教師崔建國沈陽航空航天大學2013年6月9沈陽航空航天大學畢業(yè)設計（外文翻譯）Aeroengine condition monitoring system design studyDesign research abstract: the aircraft engine condition monitoring system for a certain type of aircraft engine as the research object, discussed the engine state monitoring system design and implementation, this paper mainly discusses the status monitoring system of the overall design,