Development and performance analysis of a data-reduction algorithm for automotive multiplexing

Automotive multiplexing allows sharing information among various intelligen t modules inside an automotive electronic system. In order to achieve an op timum functionality, the information should be exchanged among various elec tronic modules in real time, Data-reduction techniques are used to send the data over a transmission medium at a high speed. They can be employed in a utomotive multiplexing systems to improve the information exchange rate amo ng various intelligent modules. Some off-the-shelf data-reduction algorithm s have been considered for automotive multiplexing, However, their applicat ions have been limited to text data classes only. This paper introduces a d ata-reduction algorithm that ran he applied to all data classes found in au tomotive multiplexing, including body- and engine-related data. Detailed pe rformance analysis of the algorithm is presented in this paper. Although th is algorithm has been developed to fit in the automotive environment, it ca n also be applied to nonautomotive applications in which extensive informat ion exchange is performed among control modules via a multiplexing bus. The proposed algorithm uses SAE; J1939 as a base protocol. However, it can be used with other automotive multiplexing protocols without loss of generalit y.