Scientific and Technical Journal

ELECTROTECHNIC AND COMPUTER SYSTEMS

ISSN Print 2221-3937
ISSN Online 2221-3805
PERSPECTIVES IN THE USE OF BITWISE PIPELINING IN THE COMPONENTS OF SAFETY-RELATED SYSTEMS
Abstract:

. The safety-related systems are development of the computer systems at the level of diversification of resources with division of an operating mode on normal and emergency. Designing of the digital components lags behind in development the system level as is based on the use of traditional array structures which correspond in development of resources to the bottom level – replication. Array structures reduce a checkability of the digital circuits in a normal mode and create a problem of the hidden faults which can be accumulated throughout a continuous normal mode and reduce fault tolerance and the functional safety of system and its components in the most responsible emergency mode. Changeover of array structures by bitwise pipelines which correspond in development of resources to diversification level allow to solve a problem of the hidden faults. However Computer-Aided Design also shows lag in development of resources as is oriented in designing of the digital circuits on support of the array structures. Results of experiments which compare the array structures and bitwise pipelines implemented in field programmable gate array by means of the Computer-Aided Design of Altera are offered. Researches of array structures and bitwise pipelines are conducted on the example of multipliers of the binary codes. Comparing of the circuit decisions is performed in throughput in case of identical complexity of the circuits and in energy consumption at the rate of execution of one operation. The received results of comparing show on unequal conditions in designing of the iterative array and bitwise pipeline multipliers. Preference is given to array structures. The method which increases efficiency of bitwise pipeline multipliers by data processing on two bits in a clock cycle is suggested. The efficiency of bitwise pipeline multipliers increases at the same time both in throughput and in energy consumption.

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References
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24 Sept 2018

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