The invention belongs to the technical field of vehicle-mounted networks, and discloses a 10BASE-T1S network fault rapid positioning method and
system, and the method comprises the steps: constructing a
fault management sub-layer which comprises a master node and slave nodes; the master node receives health frames sent by the slave nodes according to a preset period, and the master node constructs a node
sequence mapping table when receiving the health frames; determining a fault suspicious interval according to the fault initial judgment result; the sequence
breakpoint analysis comprises
single node breakpoint analysis, continuous node
breakpoint analysis and sequence jump anomaly analysis; determining a target fault node; determining a fault node type to which the target fault node belongs based on a self-checking feedback result; and executing a hierarchical
recovery strategy according to the fault node type. According to the method, the fault type is accurately judged, the
troubleshooting efficiency is high, the fault
recovery does not need manual intervention, the bandwidth occupation is small, and the problems that the fixed
polling frequency is adopted and the bandwidth occupation is uncontrollable are avoided.