×

Method and system for monitoring sensor data of rotating equipment

  • US 10,339,784 B2
  • Filed: 06/15/2017
  • Issued: 07/02/2019
  • Est. Priority Date: 06/17/2016
  • Status: Active Grant
First Claim
Patent Images

1. A method for detecting a failure in rotating equipment based on monitoring sensor data of the rotating equipment, wherein the method comprises:

  • collecting, during an online phase, by a plurality of sensors of the rotating equipment, a sensor data stream, wherein the data stream consists of an ordered sequence of feature vectors, each feature vector representing measurements of at least one sensor of the plurality of sensors of the rotating equipment at a certain point in time,providing the sensor data stream to a processor,processing, by the processor, the sensor data streamrepresenting the sensor data stream with a set of microclusters, each microcluster defining a subspace,for each new feature vector of the sensor data stream, updating the set of microclusters bycalculating a correlation distance measure between the new feature vector and each microcluster,assigning the new feature vector to a microcluster with a smallest value for the correlation distance measure if the value is below a range parameter and updating the microcluster based on the new feature vector, orcreating a new microcluster based on the new feature vector if all values for the correlation distance measure are above the range parameter,creating, during an offline phase, a macrocluster model containing macroclusters based on the microclusters by calculating a comparison measure between each pair of microclusters and grouping microclusters in a macrocluster if their value of the comparison measure is below a threshold, andcomparing the macrocluster model with historical models by calculating a similarity measure, with each historical model representing either a standard operation or a failure state,choosing the historical model with the highest value of the similarity measure, anddetecting a failure if the chosen historical model represents a failure state.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×