The invention aims to provide a control method of data streams of an
avionics system of a civil light
airplane to solve the problems in the aspects of control real-time, fault-tolerant control and the like of internal data streams of an integrated
avionics system in the prior art. The control method comprises the following steps of: firstly, classifying the data streams inside the
avionics system of the light
airplane into four types, and defining functions and data types of each
data field inside the data streams; secondly, according to different attributes of transmission events, dividing each data frame into a periodic type and a conditional type; thirdly, determining different communication cycles, rates and error correction
modes; and finally, establishing a standard framework of network transmissions among a main flight display, a multifunctional display, a first integrated processor, a second integrated processor and a plurality of sensors. The control method not only meets requirements on system real-time and reliability, but also has high expandability, supports
data channel compounding and data fusion of a plurality of sensors, is low in cost and high in universality, and is widely applied to various integrated display
control unit configurations.