System and method to monitor compressor rack operation
AssigneeHoneywell International Inc.
InventorsMartin Hrncar, Radek Fisera
Life of this patent
Estimating the term…
Abstract
A commercial refrigeration system receives data from a plurality of compressors in a compressor rack, and uses the data to model a steady state amp draw for each of the compressors in the compressor rack. The system receives additional data from the plurality of compressors, and determines a steady state amp draw for each of the compressors from the additional data. The system then compares the amp draw from the additional data with the steady state amp draw model, and identifies a compressor fault based on the comparison of the steady state amp draw from the additional data with the steady state amp draw model.
Claims12
A system comprising:
- one or more computer processors configured to:
- receive data relating to a plurality of compressor rack stages, the compressor rack stages comprising an identification of compressors operating during a particular time period;
- generate a square matrix, wherein a number of rows and columns of the square matrix equals a number of the compressor rack stages;
- generate a diagonal through the matrix, wherein a value of a matrix element through which the diagonal passes represents a number of instances in a time window wherein the compressor rack stage identified by the row and column was operational, and wherein a value of a matrix element through which the diagonal does not pass represents a number of switches during the time window from a compressor rack stage represented by the row to a compressor rack stage represented by the column;
- and
- generate an alarm when a sum of the non-diagonal matrix elements is greater than a threshold.
Dependencies are inferred from the claim text.