General Aviation Bus Real-time Test And Analysis Techniques

Avionics bus technology is the base of avionics integrated system, with responsibility of information exchange and resource sharing between different subsystems on the plane. Because of the key status of the avionics bus in avionics integrated system, its reliability and stability become more and more important. Aim at currently various avionics bus is in a great deal of usage in the modern airplane, how to carry on a comprehensive test to the complicated avionics system efficiently and accurately, become the hot point of the avionics bus test realm. This paper mainly researched the universal avionics bus real-time test and analysis technology, including:1. Analyzed the characteristics' and the development trend of avionics bus system. Researched the standard, constitute structure and deliver mechanism of ARINC429 and MIL-STD-1553B and then compared this two mostly used avionics bus.2. Analyzed the contents and methods of the avionics test technique. By comparing the computer network test, studied the avionics bus test technique of ARINC429 and MIL-STD-1553B and pointed out the key technology of universal avionics bus real-time test and analysis.3. Analyzed the characteristics of the Interface Control Document ICD and it's function in the avionics test system. Aim at the abuse of traditional ICD design method, pointed out the data description design method of universal avionics bus.4. Synthesize in the characteristics and system structure of universal avionics bus test system, carry out the platform of universal avionics bus real-time test and analysis.5. Take the technology of universal avionics real-time test and analysis used into the item of "ARJ21 airplane ARINC429 data test and analysis instrument'provided by airplane design institution in Shanghai. Designed and realized the software system of ARINC429 data test and analysis instrument. The result indicated that it could fulfill the request of function and performance.