Digital Sensor Memory Segmentation for Status Evaluation
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Solution Overview
Problem
Existing digital sensors in process automation face challenges in accurately evaluating their status due to memory limitations that cause older adjustment data to be overwritten by newer data, leading to incomplete consideration of changes since the sensor's initial use, which affects the reliability of status evaluations.
Innovation Solution
A method that involves permanently storing factory adjustment data and initial user adjustment data in the sensor's memory, with additional adjustment data stored in a FIFO memory, allowing for a comprehensive status evaluation by comparing factory and user adjustment data, and enabling the transfer of these data via an inductive interface to a superordinate unit for further analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If adjustment data are stored in a limited memory using FIFO sequence, then newer adjustment data can be stored, but older adjustment data are overwritten and lost
Solution Approach 1:
The patent segments the memory into two distinct parts: a first memory area for permanently storing initial user adjustment data, and a second memory area for storing subsequent adjustment data using FIFO sequence. This segmentation allows the system to preserve critical initial calibration information while still accommodating ongoing adjustment data, thereby resolving the contradiction between storing new data and preserving old data.
2Adaptability or versatility
If only factory adjustment data are stored permanently, then sensor can be delivered to customer, but user-specific initial adjustments are lost and cannot be considered in status evaluation
Solution Approach 1:
The patent implements preliminary action by permanently storing the initial user adjustment data in the first memory area before any subsequent adjustments are made. This ensures that the baseline calibration performed by the user under their specific operating conditions is preserved, enabling reliable status evaluation by comparing future measurements against this established baseline.
3Measurement precision
If memory is used to store history of adjustment data, then status evaluation can be performed, but initial user adjustment data are not preserved for comparison
Solution Approach 1:
The patent segments the memory into two distinct parts: a first memory area for permanently storing initial user adjustment data, and a second memory area for storing subsequent adjustment data using FIFO sequence. This segmentation allows the system to preserve critical initial calibration information while still accommodating ongoing adjustment data, thereby resolving the contradiction between storing new data and preserving old data.
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
This approach enhances the accuracy of sensor status evaluation by preserving initial user adjustment data and allowing for continuous monitoring of sensor performance, improving the detection of changes and predicting operational life or maintenance needs.
Implementation Method 1
an inductive interface for transferring, at a minimum, the adjustment data from the factory adjustment and/or the initial user adjustment to a superordinate unit
Data Source
AI summary
The invention relates to a method for start-up of a sensor, comprising at least the following steps: performing a factory adjustment during the manufacture of the sensor; permanent storage of adjustment data from the factory adjustment in a memory of the sensor; delivering the sensor to the customer; and performing an initial user adjustment. The method is characterized in that adjustment data from the initial user adjustment in the memory of the sensor are stored permanently, thereby making it possible to improve the status evaluation of the sensor. The invention further relates to a computer program product, a machine-readable data carrier and a sensor.