Itron, Inc.
Variable acquisition buffer length

Abstract:

A system and method for determining an acquisition buffer size for use in processing signals, the method including determining a number of samples obtained for a predetermined number of line cycles based on digital signals received from an analog-to-digital converter (106), determining an integer number of line cycles needed for a predetermined target number of samples, and determining an acquisition buffer length based on the integer number of line cycles, as a length of time that can accommodate the determined integer number of line cycles while minimizing or avoiding partial line cycles. The method can further include determining whether the determined acquisition buffer length is within a threshold range, and when not within the threshold, continuing to store a previously determined acquisition buffer length instead of the determined acquisition buffer length. The method may be repeated to continually adjust the acquisition buffer length to minimize or avoid partial line cycles.