Adaptive Sampling System for Time-Variant Numerical Measurements
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorJoshua Guthrie
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Abstract
An adaptive sampling system uses dynamic adjustment of sampling rates to efficiently capture aperiodic, time-variant numerical measurements. This system evaluates real-time data variability to modulate sampling frequency, ensuring that only significant data variations are recorded. This approach minimizes unnecessary data storage and processing, enhancing the efficiency of data transfer and analysis in systems requiring precise monitoring and control. The system for data acquisition prioritizes accuracy and resource optimization in fluctuating conditions.
Claims6
An adaptive sampling system for generating downsampled time-variant numerical measurements of physical conditions, said adaptive sampling system comprising:
- A customized programmable application specific logic array,
- said customized programmable application specific logic array being specifically customized according to an application-specific rate curve embedded within the customized programmable application specific logic array,
- said customized programmable application specific logic array producing an update rate used for downsampling as a function of said application-specific rate curve and a magnitude of error of last reported value;
- at least one customized aperiodic measurement sensor in communication with said customized programmable application specific logic array;
- said customized aperiodic measurement sensor having at least one specific sensor for sensing numerical values representing measurements of physical conditions;
- said customized time variant, aperiodic measurement sensor having customized programmable sensor logic that adjusts for time-variant based updating of said numerical values as regulated by said customized programmable application specific logic array;
- and
- an output module in communication with said aperiodic measurement sensor for outputting said numerical values of physical conditions on an aperiodic variable time schedule.
A method for adaptive sampling, comprising:
- depositing a signal to a high speed data acquisition system to digitize that signal with a time stamp to create a current sample;
- providing a data processing display to compare values from the current sample with a previous sample for a delta;
- inserting that delta into a table lookup to use an Update Rate Curve to find a new update time;
- calculating a Sample Update Timestamp to perform a potential subsequent update through addition of the new update time to a timestamp of an incoming sample off a high-speed data acquisition device;
- comparing the Sample Update Timestamp to a recorded time of a previous Sample Update Timestamp to use whatever timestamp out of the two timestamps has the shortest time;
- and
- receiving that timestamp to compare with a subsequent timestamp of an incoming sample from the high-speed acquisition system and only when that subsequent timestamp of the incoming sample is greater, a downstream system must record new data from a new sample off the high-speed acquisition system, replace the object with the incoming sample, and replace the new update time with a time from that incoming sample.
Dependencies are inferred from the claim text.