An active star topology for improving fault confinement in CAN networks

• Tipo: Artigo em Revista Científica Internacional
• Data: 2006

Autores

Barranco, M (Autor) Outra; Proenza, J (Autor) Outra; Rodriguez Navas, G (Autor) Outra; Luis Almeida (Autor) Outra

Revista

Título: IEEE Transactions on Industrial Informatics

Vol. 2 Nº 2

Páginas: 78-85

ISSN: 1551-3203

Editora: IEEE

Indexação

ISI Web of Knowledge - 38 Citações

Scopus - 59 Citações

Outras Informações

ID Authenticus: P-004-KYF

DOI: 10.1109/tii.2006.875505

Abstract (EN): The controller area network (CAN) is a field bus that is nowadays widespread in distributed embedded systems, due to its electrical robustness, low price, and deterministic access delay. However, its use in safety-critical applications has been controversial due to dependability limitations, such as those arising from its bus topology. In particular, in a CAN bus, there are multiple components such that if any of them is faulty, a general failure of the communication system may happen. In this paper, we propose a design for an active star topology called CANcentrate. Our design solves the limitations indicated above by means of an active hub, which prevents error propagation from any of its ports to the others. Due to the specific characteristics of this hub, CANcentrate is fully compatible with existing CAN controllers. This paper compares bus and star topologies, analyzes related work, describes the CANcentrate basics, paying special attention to the mechanisms used for detecting faulty ports, and finally describes the implementation and test of a CANcentrate prototype.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 8