Analog Input Plausibility Checking for MUX and ADC Fault Isolation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional methods for checking the plausibility of analog input data face difficulties in accurately determining errors in multiplexers (MUX) and analog-to-digital converters (A/D converters), particularly when dealing with alternating current (AC) form inputs.
Innovation Solution
A method and apparatus that utilize a multiplexer and an analog-to-digital converter to convert analog input data into digital form, determine the presence of errors by analyzing storage positions and comparing digital data against threshold values, and identify errors in the multiplexer or A/D converter based on these analyses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional methods are used to check plausibility of analog input data, then the checking process is simple, but it is difficult to accurately determine errors in multiplexer and A/D converter when dealing with AC form inputs
Solution Approach 1:
The error detection process is segmented into two distinct checks: first error determination based on storage position matching, and second error determination based on threshold value comparison. This segmentation allows each check to focus on specific error types, improving overall detection accuracy without requiring a single complex checking mechanism.
Solution Approach 2:
The patent applies preliminary action by first determining the first error based on storage position before proceeding to the second error determination based on threshold values. This preliminary check on storage position allows the system to quickly identify and handle certain error conditions before performing more complex threshold comparisons, improving efficiency and accuracy.
2Adaptability or versatility
If a single checking method is used for all input data types, then the method is simple to implement, but it cannot accurately check faults of multiplexer for AC form inputs
Solution Approach 1:
The patent implements a universal error checking method that handles both AC and DC form inputs through the same dual-check mechanism. The first error determination based on storage position and the second error determination based on threshold values work together to provide reliable fault detection across different input data types, eliminating the need for separate checking methods.
3Ease of operation
If error checking is performed without distinguishing between different error types, then the checking process is simple, but it cannot identify whether the error is in multiplexer or A/D converter
Solution Approach 1:
The patent segments error identification into two distinct error types: first error determined by storage position mismatch (indicating multiplexer issues) and second error determined by threshold value violation (indicating A/D converter issues). This segmentation preserves error location information while maintaining a straightforward checking process, allowing easy identification of whether the fault lies in the multiplexer or A/D converter.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables accurate detection of errors in multiplexers and A/D converters, regardless of the input data type, ensuring reliable data processing and quality assurance.
Implementation Method 1
generating digital data by converting the input data into a digital form, based on an analog-to-digital (A/D) converter
Data Source
AI summary
Provided are a method and apparatus for checking plausibility of analog input data. The method may include selecting input data corresponding to a channel selection signal, based on a multiplexer, and generating digital data by converting the input data into a digital form, based on an analog-to-digital (A/D) converter. The method may include determining a presence or absence of a first error in the digital data, based on a storage position of the digital data. The method may include determining a presence or absence of a second error in the digital data, based on a comparison between the digital data and a preset threshold value. The method may include determining an error of at least one of the multiplexer or the A/D converter, based on the presence or absence of the first error and the presence or absence of the second error.