Single TEDS Memory for Multiple Accelerometer Calibration
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Solution Overview
Problem
Existing transducer electronic data sheets (TEDS) require separate memory devices for each transducer, leading to inefficiencies in data storage and processing, particularly when multiple transducers of the same type need to share calibration data.
Innovation Solution
A single memory component is used to store information for multiple transducers, including identifying data and calibration data, with unique indices to distinguish between transducers, allowing a processor to download and apply calibration data for accurate measurement calculations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate memory device is used for each transducer, then transducer-specific information is stored reliably, but system complexity and cost increase
Solution Approach 1:
The patent combines multiple separate TEDS memory devices into a single shared memory device that stores information for multiple transducers. The memory is organized with a common data section containing identical information (transducer type, manufacturer, calibration conditions) and individual data sections for each transducer's unique calibration coefficients. This merging reduces the total number of memory devices while maintaining reliable access to each transducer's specific information through unique addressing.
Solution Approach 2:
The single memory device serves multiple functions by storing TEDS information for multiple different transducers simultaneously. It acts as a universal storage resource that can provide calibration data, identification information, and manufacturer details for any transducer in the system, eliminating the need for dedicated memory devices for each transducer type.
2Device complexity
If multiple transducers share a single memory component, then system cost and complexity are reduced, but data access and processing time may increase
Solution Approach 1:
The shared memory component is segmented into distinct regions: a common data section that contains information identical for all transducers (transducer type, manufacturer, calibration conditions) and individual data sections for each transducer's unique calibration coefficients. This segmentation allows the system to efficiently access only the necessary data portions, reducing access time compared to searching through a monolithic memory structure.
Solution Approach 2:
The memory is pre-organized with clearly defined sections and unique identifiers for each transducer's calibration data. This preliminary structuring enables the processor to quickly locate and retrieve the correct calibration information without time-consuming searches, as the data is arranged in advance for efficient access patterns.
3Ease of manufacture
If calibration data is stored centrally in a single TEDS, then manufacturing cost is reduced, but ensuring data accuracy for each transducer becomes more difficult
Solution Approach 1:
The memory structure implements local quality by providing transducer-specific calibration coefficient sections for each individual transducer while sharing common identification and manufacturer information. This allows the system to manufacture with a single memory component design while maintaining the precision needed for each specific transducer's calibration characteristics through dedicated data sections.
Data Source
AI summary
An accelerometer system has a node with a first single-axis accelerometer coupled to a single associated TEDS Transducer Electronic Data Sheet memory component in accordance with IEEE 1451 Standards. Information about second and third single-axis accelerometers external to the mode resides in the single TEDS memory component. The first, second, and third accelerometers are of the same type and manufacturer, and the single TEDS memory component is configured with a memory table having listings of identifying data common to all of the first, second, and third accelerometers and first, second, and third calibration data unique to the first, second, and third accelerometers, respectively.