Granted Patent B2

US 10,402,742 · App. 15/838,658 · Granted Sep 3, 2019

Abstract

Claims (54)

1. A computer-implemented method of processing sensor logs, wherein the method is performed using one or more processors or dedicated hardware, the method comprising:

accessing a first sensor log and a corresponding first reference log, each of the first sensor log and the first reference log comprising a first series of measured values of a first parameter and a second parameter according to a first time series, the first sensor log comprising measured values collected from a first sensor according to a regular schedule;

accessing a second sensor log and a corresponding second reference log, each of the second sensor log and the second reference log comprising a second series of measured values of the first parameter and the second parameter according to a second time series, the second sensor log comprising at least one controller command collected from any of the first sensor or a second sensor;

dynamically time warping the first reference log and the second reference log by a first transformation between the first time series and a common time-frame, and a second transformation between the second time series and the common time-frame, the dynamically time warping the first and second reference logs comprising:

dividing the first time series into a plurality of sub-periods in dependence upon the first reference log;

dividing the second time series into a plurality of sub-periods in dependence upon the second reference log;

for each of the first and second reference logs:

aggregating sub-periods of the same type;

arranging aggregated sub-periods in dependence upon sub-period type; and

setting each type of sub-period to correspond to an interval of the common time-frame;

generating first and second warped sensor logs by applying each of the first and second transformations to the corresponding first and second sensor logs, thereby aligning at least a first section of the first warped sensor log with at least one corresponding second section of the second warped sensor log, the generated first and second warped sensor logs facilitating a subsequent controlling of one or more machines based on the first and second warped sensor logs; and

causing a presentation of a user interface, the user interface including a representation of the at least a first section of the first warped sensor log and the at least one corresponding second section of the second warped sensor log.

2. The method of claim 1 , wherein the first time series and the second time series are divided into an equal number of sub-periods.

3. The method of claim 1 , wherein each sub-period has a type determined in dependence upon the corresponding first or second reference log.

4. The method of claim 1 , wherein aggregating sub-periods of the same type comprises arranging the sub-periods of that type consecutively.

5. The method of claim 1 , wherein aggregating sub-periods of the same type comprises:

setting each sub-period of that type to correspond to the same interval of the common time-frame; and

calculating, based on the sub-periods of the same type, a single value for each time within the interval of the common time-frame.

6. The method of claim 5 , further comprising:

accessing a plurality of sensor logs and a corresponding plurality of reference logs, each sensor log and reference log comprising a series of measured values of a parameter according to a time series, each sensor log corresponding to a sensor type;

transforming the plurality of sensor logs to a single, common time-frame by dynamic time warping and

for each sensor type:

providing a baseline sensor log by determining and storing a series of averaged values according to a common time series spanning the common time-frame.

7. A non-transitory computer-readable storage medium including instructions that, when executed by at least one processor of a computing system, cause the computing system to perform a method comprising:

accessing a first sensor log and a corresponding first reference log, each of the first sensor log and the first reference log comprising a first series of measured values of a first parameter and a second parameter according to a first time series, the first sensor log comprising measured values collected from a first sensor according to a regular schedule;

accessing a second sensor log and a corresponding second reference log, each of the second sensor log and the second reference log comprising a second series of measured values of the first parameter and the second parameter according to a second time series, the second sensor log comprising at least one controller command collected from any of the first sensor or a second sensor;

dynamically time warping the first reference log and the second reference log by a first transformation between the first time series and a common time-frame, and a second transformation between the second time series and the common time-frame, the dynamically time warping the first and second reference logs comprising:

dividing the first time series into a plurality of sub-periods in dependence upon the first reference log;

dividing the second time series into a plurality of sub-periods in dependence upon the second reference log;

for each of the first and second reference logs:

aggregating sub-periods of the same type;

arranging aggregated sub-periods in dependence upon sub-period type; and

setting each type of sub-period to correspond to an interval of the common time-frame;

generating first and second warped sensor logs by applying each of the first and second transformations to the corresponding first and second sensor logs, thereby aligning at least a first section of the first warped sensor log with at least one corresponding second section of the second warped sensor log, the generated first and second warped sensor logs facilitating a subsequent controlling of one or more machines based on the first and second warped sensor logs; and

causing a presentation of a user interface, the user interface including a representation of the at least a first section of the first warped sensor log and the at least one corresponding second section of the second warped sensor log.

8. A system for processing sensor logs, the system comprising:

one or more processors;

memory storing instructions that, when executed by the one or more processors, cause the system to perform:

accessing a first sensor log and a corresponding first reference log, each of the first sensor log and the first reference log comprising a first series of measured values of a first parameter and a second parameter according to a first time series, the first sensor log comprising measured values collected from a first sensor according to a regular schedule;

accessing a second sensor log and a corresponding second reference log, each of the second sensor log and the second reference log comprising a second series of measured values of the first parameter and the second parameter according to a second time series, the second sensor log comprising at least one controller command collected from any of the first sensor or a second sensor;

dynamically time warping the first reference log and the second reference log by a first transformation between the first time series and a common time-frame, and a second transformation between the second time series and the common time-frame, the dynamically time warping the first and second reference logs comprising:

dividing the first time series into a plurality of sub-periods in dependence upon the first reference log;

dividing the second time series into a plurality of sub-periods in dependence upon the second reference log;

for each of the first and second reference logs:

aggregating sub-periods of the same type;

arranging aggregated sub-periods in dependence upon sub-period type; and

setting each type of sub-period to correspond to an interval of the common time-frame;

generating first and second warped sensor logs by applying each of the first and second transformations to the corresponding first and second sensor logs, thereby aligning at least a first section of the first warped sensor log with at least one corresponding second section of the second warped sensor log, the generated first and second warped sensor logs facilitating a subsequent controlling of one or more machines based on the first and second warped sensor logs; and

causing a presentation of a user interface, the user interface including a representation of the at least a first section of the first warped sensor log and the at least one corresponding second section of the second warped sensor log.

9. The system of claim 8 , wherein the instructions further cause the system to divide the first and second time series into equal numbers of sub-periods.

10. The system of claim 8 , wherein the instructions further cause the system is configured to determine a type of each sub-period in dependence upon the corresponding first or second reference log.

11. The system of claim 8 , wherein the memory and one or more processors are implemented using:

one or more machines, each machine comprising one or more sensors, each sensor having a sensor type, wherein each machine is configured to output sensor logs comprising one or more series of measured values according to a time series and reference logs comprising one or more series of measured values according to a time series; and

wherein the instructions further cause the system to receive and process sensor logs and reference logs from the one or more machines.

Assignments (8)