The invention discloses an online monitoring numerical-
control system based on a
network architecture, comprising a numerical-control
machine tool, an embedded online monitoring unit, a long-distance fault diagnosis center and a standard interface, wherein the embedded online monitoring unit is provided with an independent center
processing unit which is independently arranged in the
system and comprises a PC (
Personal Computer) / 104
bus, a
signal conditioning module, a
data acquisition card and an online monitoring module, used for realizing
data acquisition and online monitoring and building
data transmission in weak-
coupling connection with the numerical-control
machine tool and connected with the long-distance fault diagnosis center through the standard interface so as to carry out fault
data transmission; and the numeral-control
machine tool and the long-distance fault diagnosis center are connected through the standard interface to realize information interaction. The invention realizes a numerical-control
machine tool complete-unit monitoring platform for carrying out information seamless interaction between a numerical-
control system and an embedded online monitoring unit, and integrally realizes that the state of the numerical-control
machine tool can be displayed, the faults thereof can be diagnosed, the performance thereof can be predicted, and the numerical-control
machine tool can be controlled for long distance by taking the platform as a node or a terminal of an equipment information network,.