Multiplex transmission system for vehicles having a failure diag

Details Multiplex transmission system for vehicles having a failure diag Multiplex transmission system for vehicles having a failure diag

1990-08-24

1992-01-07

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 14, 370 16, 371 151, H04J 116, H04J 314

Patent

active

050797590

ABSTRACT:
In a multiplex transmission system for vehicles a transmission path is made usually in the form of a loop, where one master-like supervisory node and a plurality of slave-like ordinary nodes are connected to the path. During diagnosis, this transmission path is interrupted, thus interrupting the loop. On the interrupted transmission path, the master supervisory node causes a diagnostic signal to flow in the two directions of the transmission path. The supervisory node pinpoints the position of a line disconnection in the transmission path on the basis of a reception confirmation signal received regarding respective directions from each of the ordinary nodes.

REFERENCES:
patent: 4334308 (1982-06-01), Thinschmidt et al.
patent: 4750175 (1988-06-01), Brenneman et al.
patent: 4817418 (1989-04-01), Asami et al.
patent: 4910733 (1990-03-01), Sommani et al.

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