Synchronizing data from irregularly sampled sensors

Abstract

A system and method include receiving a set of sampled measurements for each of multiple sensors, wherein the sampled measurements are at irregular intervals or different rates, re-sampling the sampled measurements of each of the multiple sensors at a higher rate than one of the sensor's set of sampled measurements, and synchronizing the sampled measurements of each of the multiple sensors.

1 - 20 . (canceled) 
     
     
         21 . A computer processing system comprising:
 a processor programmed to receive a set of sampled measurements comprising original data points for each of multiple sensors monitoring an industrial process during an original time period, wherein the set of sampled measurements were sampled at irregular intervals resulting in the original data points for each of the multiple sensors being unsynchronized between the multiple sensors;   wherein the processor is further programmed to re-sample the sampled measurements of each of the multiple sensors at a higher rate than at least one of the multiple sensors, wherein   re-sampling the sampled measurements includes:
 synchronizing the set of received sampled measurements of each of the multiple sensors, wherein synchronizing includes identifying new common instances of time during the original time period for the multiple sensors; and 
 interpolating data points for each of the multiple sensors at the new common instances of time where no original data point exists for the set of synchronized sampled measurements. 
   
     
     
         22 . The system of  claim 21  wherein re-sampling the sampled measurements includes removing sampled measurements for each of sets of sampled measurements for the sensors where a gap occurs in one sensor's set of sampled measurements, and wherein a gap is defined as a time period that exceeds a threshold set for the sensor without a sampled measurement. 
     
     
         23 . The system of  claim 21  wherein a gap is defined as a time period that exceeds a threshold set for the sensor without a sampled measurement. 
     
     
         24 . The system of  claim 21  wherein synchronizing the sampled measurements comprises combining measurements to obtain values at each of equal time intervals. 
     
     
         25 . The system of  claim 21  wherein synchronizing the sampled measurements comprises interpolating measurements to obtain values at time stamps separated by equal time intervals. 
     
     
         26 . The system of  claim 25  wherein an average of at least two measurements is used to obtain a value for a time stamp between the times of the two measurements. 
     
     
         27 . The system of  claim 21  wherein the processor is further programmed to use sampled measurements from a first sensor to filter re-sampled values corresponding to a second sensor. 
     
     
         28 . The system of  claim 21  and further comprising combining sampled measurements from multiple sensors to filter re-sampled values corresponding to a sensor. 
     
     
         29 . The system of  claim 28  wherein the sampled values from multiple sensors are combined using logical operators including at least one of AND, OR, and NOT. 
     
     
         30 . The system of  claim 28  wherein the industrial process monitored by each of the multiple sensors includes a wind turbine industrial process. 
     
     
         31 . A computer readable storage device having recorded instructions for causing a computer to implement a method, the method comprising:
 receiving, at a programmed computer, a set of sampled measurements comprising original data points for each of multiple sensors monitoring an industrial process during an original time period, wherein the set of sampled measurements were sampled at irregular intervals resulting in the original data points for each of the multiple sensors being unsynchronized between the multiple sensors;   re-sampling, via the programmed computer, the set of received sampled measurements of each of the multiple sensors at a higher rate than at least one of the multiple sensors, the re-sampling including:
 synchronizing, via the programmed computer, the set of received sampled measurements of each of the multiple sensors, wherein synchronizing includes identifying new common instances of time during the original time period for the multiple sensors; and 
 interpolating, via the programmed computer, data points for each of the multiple sensors at the new common instances of time where no original data point exists for the set of synchronized sampled measurements. 
   
     
     
         32 . The computer readable storage device of  claim 31  wherein re-sampling the sampled measurements includes removing sampled measurements for each of sets of sampled measurements for the sensors where a gap occurs in one sensor's set of sampled measurements. 
     
     
         33 . The computer readable storage device of  claim 31  wherein a gap is defined as a time period that exceeds a threshold set for the sensor without a sampled measurement. 
     
     
         34 . The computer readable storage device of  claim 31  wherein synchronizing the sampled measurements comprises combining measurements to obtain values at each of equal time intervals. 
     
     
         35 . The computer readable storage device of  claim 31  wherein synchronizing the sampled measurements comprises interpolating measurements to obtain values at time stamps separated by equal time intervals. 
     
     
         36 . The computer readable storage device of  claim 35  wherein an average of two measurements is used to obtain a value for a time stamp between the times of the two measurements. 
     
     
         37 . The computer readable storage device of  claim 31  and further comprising using sampled measurements from a first sensor to filter re-sampled values corresponding to a second sensor. 
     
     
         38 . The computer readable storage device of  claim 31  and further comprising combining sampled measurements from multiple sensors to filter re-sampled values corresponding to a sensor. 
     
     
         39 . The computer readable storage device of  claim 38  wherein the sampled values from multiple sensors are combined using logical operators including at least one of AND, OR, and NOT. 
     
     
         40 . The computer readable storage device of  claim 38  wherein the industrial process monitored by each of the multiple sensors includes a wind turbine industrial process.