Passive Resistor ID for Pressure Transducer Compensation
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Solution Overview
Problem
Existing pressure transducer identification systems, such as those using Transducer Electronic Data Sheets (TEDS), are unreliable at high temperatures and susceptible to electromagnetic interference (EMI), lightning, and electrostatic discharge (ESD), and require costly certification and active electronic memory, which can lead to human error and accuracy issues.
Innovation Solution
A system that assigns a distinct identifier to a pressure transducer based on resistor values, using a configuration of conductors and resistors to set an identification that can be electronically read, eliminating the need for active electronic memory and enhancing reliability and accuracy by utilizing passive resistive elements that can operate at elevated temperatures and resist EMI and ESD.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If TEDS memory chips are used for transducer identification, then transducer ID and calibration data can be stored and read, but the system becomes unreliable at high temperatures and susceptible to EMI, lightning, and ESD
Solution Approach 1:
The patent extracts the identification function from active electronic memory chips and implements it using passive resistive elements (resistor networks) that are inherently more reliable under extreme conditions. The resistor-based ID system removes the vulnerability to EMI, lightning, ESD, and high temperature while maintaining the ability to store and retrieve transducer identification and calibration data.
Solution Approach 2:
The patent uses simple, inexpensive resistive elements instead of costly certified memory chips. These passive resistors are inherently robust and do not require expensive certification procedures, making the system both cheaper and more reliable for harsh environmental conditions.
2Extent of automation
If active electronic memory chips are used for transducer ID, then data storage and retrieval is enabled, but costly certification procedures are required and human errors occur in manual data entry
Solution Approach 1:
The resistor-based identification system is self-configuring and requires no external certification or programming. The unique resistance values are inherently present in each transducer, enabling automatic identification and data retrieval without manual intervention or expensive certification procedures.
3Loss of information
If manual entry of serial numbers is used to retrieve transducer characteristics, then data can be accessed, but human errors occur and accuracy is reduced
Solution Approach 1:
The system implements automatic feedback by having the measurement system read the resistor-based ID values directly from each transducer and automatically retrieve the corresponding calibration data from storage, eliminating manual data entry and associated human errors.
Data Source
AI summary
Certain implementations of the disclosed technology may include systems, methods, and apparatus for assigning a distinct identifier (ID) to a pressure transducer based on resistor values. Embodiments include electrically identifying the distinct ID, and compensating the pressure transducer based on the distinct ID. According to an example implementation, a method is provided that can include coupling a transducer ID measurement assembly with a transducer assembly; measuring, by the transducer ID measurement assembly, a plurality of divided voltages between a plurality of configurable ID switches and a reference resistor; determining, with a processor, a distinct ID associated with the transducer assembly based on the plurality of measured divided voltages; retrieving one or more compensation parameters based on the distinct ID; and compensating, with the one or more compensation parameters, a measurement signal of the transducer assembly.