Systems and methods for analog to digital converter failure identification

摘要

The present disclosure provides systems and methods for identifying and reporting failures of an analog to digital (A/D) conversion system. The systems and methods are configured to detect and report a failure of a preamplifier of the A/D conversion system and/or a failure of a A/D converter of the A/D conversion system. A high frequency component can be included in the input of an A/D converter. The A/D converter is configured to output a digital value to the A/D conversion system, wherein the digital value includes the high frequency component of the A/D converter input. The A/D conversion system is configured to determine an output status, including a frequency component and a corresponding amplitude, and to determine a failure of the A/D conversion system based on the determined output status. The A/D conversion system can report a change in, or a failure of, the A/D converter, and can operate or prevent operation of protection elements.

主权项

1. An analog to digital (A/D) conversion system with failure identification, comprising:
an amplifier configured to receive an input and produce an amplified output injected with at least one identifiable characteristic; an A/D converter configured to receive the amplified output and convert the output to a digital output; a failure identification module configured to determine the existence, non-existence, or variation of the identifiable characteristic in the digital output; a filter configured to filter the digital output to remove the identifiable characteristic from the digital output; and an alert module configured to provide a failure notification based on a determination by the failure identification module that the identifiable characteristic does not exist in the digital output, or has changed in a manner indicative of an A/D failure and/or amplifier failure.