Abstract: A method comprises receiving a time series of data values for a time window of each operational parameter of a number of operational parameters of equipment; calculating a time derivative feature that comprises a change of the data values of a first operational parameter of the number of operational parameters over the time window; and classifying, using a machine learning model and based on the time derivative feature, an operational mode of the equipment into different failure categories.

Abstract: A method comprises sampling, at a first sampling rate for a first time window, data values of at least one operational parameter of equipment. The method comprises sampling, at a second sampling rate for a second time window, the data values of the at least one operational parameter, wherein the second sampling rate is different from the first sampling rate. The method comprises classifying, using a machine learning model and the data values in the first time window and the second time window, an operational mode of the equipment into different failure categories.

Abstract: A method comprises receiving a time series of data values for a time window of each operational parameter of a number of operational parameters of equipment; calculating a time derivative feature that comprises a change of the data values of a first operational parameter of the number of operational parameters over the time window; and classifying, using a machine learning model and based on the time derivative feature, an operational mode of the equipment into different failure categories.

Abstract: Sensor devices and systems for detecting an analyte are disclosed and described. In one embodiment, a transducer array operable to detect a plurality of analytes is provided. Such an array may include a support substrate and a plurality of Metal Oxide Semiconductor (MOS) sensors coupled to the substrate. Each MOS sensor can further include a MOS active material, a plurality of heating elements thermally coupled to the MOS active materials in a position and orientation that facilitates heating of the MOS active materials, and an electrode functionally coupled to the MOS active material and operable to detect a response signal generated by the MOS active material.