TTP features in 787 power system

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Hardware and software products based on TTTech’s Time Triggered Protocol (TTP) are being used by Intertechnique in the development of Electrical Load Control Units for the electronic power system in the Boeing 787 Dreamliner.

The Electric Power Generation and Start System is a key element of the Boeing 787 Dreamliner as it controls, distributes and protects the aircraft's electric power. Maximum levels of safety and strict determinism are required for this application. According to TTTech, TTP is based on more than 25 years of development work. In contrast to event triggered communication systems, TTP involves a continuous communication of all connected nodes via redundant data buses at predefined intervals. The fault tolerant architecture ensures that an overload in the bus system is prevented even if several important events occur simultaneously. TTP can support applications that must monitor operational consistency effectively and detect errors in order to provide the required level of reliability. This technology is said to b e a major technological achievement in the area of distributed embedded computing and networking. TTTech’s COTS software components are certifiable in compliance with DO-178B Level A.