Study on the low power technologies of 1553B bus

MIL-STD-1553B bus is widely used in military and space missions nowadays for its high reliability and efficiency. Minimizing mass, size and power is one of the prime objectives for space missions. The problems of mass, size and power in implementing 1553B bus systems limit its applications in small satellites. To solve the preceding problem and realize the satellites miniaturization, three low power technologies of 1553B Bus are proposed in this paper. The low power concepts are based on mature technologies and components, such as large scale programmable specific integrated circuits, low power bus transceivers. The design of ASIC (Application Specific Integrated Circuit) or SOC (System On a Chip)chips including 1553B IP Core and related peripheral functions, the design of 1553B bus based on RS485 transceivers, and the design of 1553B bus based on infrared communications are introduced in this paper. The three designs are tested and verified rational by system simulation and experiments. Finally, a promising low power design of 1553B Bus for Chinese satellites is presented. The 1553B protocol is realized by ASIC or SOC chips including 1553B IP Core and relevant peripheral functions, and the physical layer is realized by RS485 transceivers. Design of 1553B bus based on infrared communications will also be used widely in some special applications, for example in the small and nano satellites.