Serial Position Sensing Device Using Interpolation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing position sensing devices require extensive parallel hardware processing, which is cost-inefficient and prone to errors due to hardware mismatches, making them unsuitable for high-speed applications.
Innovation Solution
A position sensing device that processes signals in a serial manner using selection, sampling, storage, and interpolation to determine missing measurements, reducing the number of hardware blocks required while maintaining time relation accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If parallel processing hardware is used to maintain time relation accuracy, then measurement precision is improved, but device complexity and cost increase
Solution Approach 1:
The patent segments the signal processing into two distinct parts: (1) parallel acquisition of sensor signals with time stamps, and (2) sequential processing through selection, sampling, and interpolation. This allows the system to maintain time relation accuracy during acquisition while using less complex sequential processing afterward, reducing overall hardware complexity.
Solution Approach 2:
The patent creates a copy of the time relation information through time stamps that are attached to each sensor signal. This copied temporal information is then used during sequential processing to reconstruct the synchronous relationship without requiring complex parallel processing hardware, thereby reducing device complexity while maintaining measurement precision.
2Productivity
If multiple A/D converters are used simultaneously for high-speed sensing, then productivity is improved, but device complexity and cost increase
Solution Approach 1:
The patent performs preliminary action by capturing time stamps for each sensor signal at the moment of acquisition. This pre-captured temporal information allows a single A/D converter to process signals sequentially while still achieving high-speed sensing performance, as the time relation is already recorded and can be used to reconstruct synchronous data without requiring multiple simultaneous converters.
3Reliability
If parallel processing is used to avoid errors, then reliability is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent uses time stamps as feedback information that is attached to each sensor signal. This feedback mechanism allows the system to track and compensate for timing differences during sequential processing, maintaining reliability by ensuring accurate time relation reconstruction without requiring highly precise hardware matching that would be needed for parallel processing.
Data Source
AI summary
A device for position sensing comprises sensing means arranged for producing at least two sensor signals, and a signal construction unit. The signal construction unit comprises selection means for selecting in a serial way one of at least two time-synchronous signals, sampling means for sampling a selected time-synchronous signal at given sampling instants, storage means for storing sampled data representing the selected time-synchronous signal and timing information indicating which of the given sampling instants were used to obtain the sampled data, and processing means for determining at one of the given sampling instants a value for at least one of said time-synchronous signals that was not sampled at the one given sampling instant by performing an interpolation using data values of the at least one time synchronous signal stored in the storage means and obtained at another point in time than the one given sampling instant.