Zhang Jinjie

Multi-dimensional fault diagnosis method based on expert thinking

The invention discloses a multi-dimensional fault diagnosis method based on expert thinking. The running state information of each measuring point is monitored in real time and on line; the possible fault types of a device are judged according to acquired basic data and failure mechanism of the alarm measuring point, so that a responding fault matrix is established; a weight matrix is established corresponding to the fault matrix according to the acquired data and the failure mechanism of the each measuring point; and the fault matrix multiplies the weight matrix to solve a result of diagnosis and give a final diagnosis, so that the condition whether the device has faults is determined. The diagnosis method can remove the signal abnormal failure of the single measuring point at the single timing, can remove the false failure of the device as much as possible, contributes to distinguishing the fault types with the similar symptom at the same time to give the most practical fault diagnosis, solves the problem of a conflict of diagnosis based on the different measuring points and at different timing, and has a positive engineering guiding effect on field apparatus management and monitoring staff.