Society of Automotive Engineers AS-2 standardization activities

The Society of Automotive Engineers (SAE) Avionics Systems Division has been developing standards to meet the requirements of the aerospace community beginning with the development of MIL-STD-1553. In 1979, the SAE began to look at requirements for an avionics bus with performance which was substantially better than MIL-STD-1553B. The results of this work was the generation of two high-speed data bus standards: AS 4704, the linear-token passing multiplex data bus, and AS 4075, the high-speed ring bus. These standards were developed to meet the needs of real-time data communication systems. The AS-2 Interconnect Networks committee has addressed a wide variety of issues in data communications both system-wide as well as within smaller subsystems. The AS-2A subcommittee has responsibility to generate the requirements documents for all AS-2 standards. A task group of AS-2A has addressed the requirements for sensor data/video data distribution network. An important part of the standardization activity is to support the user with relevant information. The AS-2C subcommittee is considering the generation of standards which address the needs of modular avionics backplane communications. All these and related activities are discussed