J. K. R. Sastry ¹, J. Viswanadh Ganesh ¹, J. Sasi Bhanu ¹

Affiliations
1 Department of Electronics and Computer Science Engineering, KL University, Vaddeswaram, Guntur District - 522502, Andhra Pradesh, IN

Abstract

Realising a distributed heterogeneous embedded system using I²C requires investigations and findings related to design of networking, architecture, message design and flow for prioritisation, and datagram design. The existing methods for effecting communication among the heterogeneous embedded systems interconnected through I²C communication system have not addressed the heterogeneity issues. To suffice, new methods for designing Heterogeneous Embedded networks, communication systems, message flow systems and the message design have presented. The methods have been applied to an existing distributed embedded system and the results obtained proved to be exact as required. Every distributed embedded system is different and the kind of Hardware and protocol conversions required is dependent on the type of distributed embedded system. It has been shown in the paper the kind of conversions that must be undertaken considering I²C as the communication method and a set of selected heterogeneous embedded systems that are used for developing an application that monitors and controls the temperatures within a Nuclear reactor system. The way the communication must be effected is dependent on the number of masters and the slaves that must be supported on the network. A communication system architecture that suits the pilot project has been presented. A design flow method which uses priority queues has been presented to effect the communication according to the flow required. The design of datagram required for effecting the communication has also been presented in the paper. The methods have been applied to an existing distributed heterogeneous embedded system that monitors and controls the temperatures with a Nuclear reactor system and the results have been found to be exact fulfilling all the application requirements.

Keywords

Architecture, Distributed, Heterogeneous, Embedded, I²C, Message Flow.

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J. Sasi Bhanu ¹, A. Vinaya Babu ², P. Trimurthy ³

Affiliations
1 Department of Computer Science Engineering, KL University, Vaddeswaram - 522502, Guntur, Andhra Pradesh, IN
2 Department of Computer Science and Engineering, JNTU Hyderabad - 500085, Hyderabad, Andhra Pradesh, IN
3 Department of Computer Science and Engineering, ANU, Guntur - 522510, Andhra Pradesh, IN

Abstract

Background/Objective: Every embedded system follows a language to communicate with the HOST. Changes do happen to the language which must be affected while the system is up and running dynamically due to criticality reasons. Methods/Statistical Analysis: An efficient architectural modelling is undertaken which includes components that co-exists with ES components and help in dynamically adapting to the changes initiated from the HOST to be carried to the syntax and semantics of the command language used for effecting necessary operations within the embedded system. A tabular method has been used to compare the architectural models and find the most effective architecture that best suits a syntax evolution system. Findings: Different kinds of evolution systems that include syntax, semantics, online testing and the communication system have to be supported to make an embedded system adapt to the changes dynamically. Syntax evolution system is the interfacing system that deals with evolving different kinds of commands, changes to the commands and the new commands which are transmitted from the HOST and the target to adapt the same through invoking the related real-time functions. The commands must be resolved and evolved dynamically. Different kinds of methods have been invented which can be used to affect the changes required to the command language dynamically while the system is up and running. The components that are required for implementing the methods have also been invented. The new components have been added to the ES software components and a new architecture has been evolved. The new architecture has been included with all the components related to a Nuclear reactor system which is basically a safety critical system. Application/Improvement: A comparative analysis of all the architectures reveal that the new architecture has all the features required for undertaking the dynamic syntax evolution at it also reveals that the new architecture uses all the methods required for dynamic syntax evolution while other architectures supports just one or two methods.

Keywords

Dynamic Evolution, Effective Architecture, Embedded Systems, Syntax Evolution

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J. Sasi Bhanu ¹, A. Vinaya Babu ², P. Trimurthy ³

Affiliations
1 Department of Computer Science Engineering, KL University, Vaddeswaram, Guntur District - 522502, Andhra Pradesh, IN
2 Department of Computer Science and Engineering, JNTU Hyderabad, Hyderabad - 500085, Telangana, IN
3 Department of Computer Science and Engineering, ANU, Guntur - 522510, Andhra Pradesh, IN

Abstract

Background/Objective: Implementation model with total description and development at code level of the online testing related dynamically evolvable components is absolutely required to show the working of the implementation model at gross ischolar_main level. Methods/Statistical Analysis: The description of the overall architectural model is considered and a design model for implementing the online testing components has been presented. The platform on which the development has to take place has been designed considering various features that are related to dynamic evolution. Findings: Dynamically evolvable embedded systems must be evolvable syntactically and semantically. Different subsystems related to both the evolutions must be included into the ES software architecture. The change effected to various components through these modules must be tested online which the system is in running mode before the changed components are pushed into full operational mode. The test processes must also be evolved dynamically as it is not possible to fore see the changes. Comprehensive architectural models have been considered and the implementation model of the online testing components which are self-evolvable has been presented in this paper. The implementation design has been undertaken considering various issues which include the platform for development, the interlacing between the components, the use of the features of the RTOS etc. Application/Improvements: The implementation model has been applied to a safety critical system that monitors and controls temperatures within a nuclear reactor system and experimentation has been done to find the effectiveness of the model designed.

Keywords

Dynamically Evolvable Testing, Dynamic Evolution, Embedded System, Online Testing

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