【正文】 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, system software and hardware development and testing and redundancy design, and in the design of engine state monitoring system, introduced the embedded PC / 104 order to make the state monitoring system has a better scalability and adaptability, the system designed can work in three ways: airborne operation mode, data playback mode and ground test run mode, through these way for automatic monitoring of engine state parameter, for the state of the engine trend analysis, fault diagnosis, and as to provide scientific basis for maintenance.Key words: the engine condition monitoring。PC / 104。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。Under 16 way switch quantity after adopting the light into a the data processing part of the need for continuous monitoring of state parameters of the engine, so in the need for signal processing, storage and transmission, the upper machine at the same time, according to the need to receive the signal in real time and if samples values more than its upper and lower give alarm, including buzzer lower place machine and superordination machine screen alarm。 PC the data display mode including curve display, digital display, simulation table display and record the browsing。The data munication between upper machine and lower machine way using serial order to improve the extensibility and adaptability of engine state monitoring system, the system designed can work in three ways: airborne operation mode, data playback mode and ground test mode, including airborne operation mode can be PC / 104 modules separately in the form of the airborne launch during the real flight test, because of the PC / 104 modules, small volume, high reliability, high temperature resistance and resistance to adverse conditions, well adapted to the flight environment, to the parts of the flight state and parameters in the flight details and accurate acquisition, data processing and at the same time, all the data are stored in the solid plate, in order to perform data playback and analysis of engine performance in the future。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