Automatic Zero Reset for Pressure Transducer Using Reference Sensor
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Solution Overview
Problem
Pressure sensors experience zero-drift over time due to mechanical and electrical changes, leading to inaccurate measurements, which can be hazardous in safety-critical systems, and existing reset methods are time-consuming and often inaccurate.
Innovation Solution
A sensor reset system utilizing a micro-electro-mechanical resonant pressure transducer provides a precise reference for updating zero-offset calibration coefficients of other sensors, allowing for automatic and accurate re-zeroing without manual intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual reset methods are used for pressure sensors, then zero-drift correction can be performed, but the process is time-consuming and labor-intensive
Solution Approach 1:
The system enables automatic zero-reset functionality where the pressure sensor system self-corrects its zero-offset calibration coefficients without requiring manual intervention. The processor automatically detects drift conditions and performs recalibration using stored baseline data, making the system self-maintaining and eliminating time-consuming manual reset operations.
2Reliability
If manual reset methods are used for pressure sensors, then zero-drift correction can be performed, but the process requires significant human intervention
Solution Approach 1:
The system enables automatic zero-reset functionality where the pressure sensor system self-corrects its zero-offset calibration coefficients without requiring manual intervention. The processor automatically detects drift conditions and performs recalibration using stored baseline data, making the system self-maintaining and eliminating time-consuming manual reset operations.
Solution Approach 2:
The system continuously monitors pressure sensor readings and compares them against stored baseline data to detect zero-drift conditions. This feedback mechanism triggers automatic recalibration when drift is detected, creating a closed-loop system that maintains accuracy without human intervention and simplifies operation.
3Productivity
If existing reset methods are used, then some correction can be achieved, but measurement accuracy and precision are insufficient
Solution Approach 1:
The system stores baseline zero-offset calibration coefficients during manufacturing or initial calibration before the sensor is deployed. These pre-stored reference values serve as the foundation for automatic drift correction, enabling the system to compare current readings against known accurate baselines and restore precision without requiring complex real-time calibration procedures.
Data Source
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AI summary
Systems, methods, and computer readable medium are provided for automatically resetting a zero-offset calibration coefficient for a pressure transducer. Ambient pressure measurements from a first pressure sensor and a second pressure sensor can be received by a computing device and compared. Based on determining a difference in the received ambient pressure measurements, an updated zero-offset calibration coefficient can be generated. The updated zero-offset calibration coefficient can be transmitted to the first pressure sensor, which once received, causes the first pressure sensor to update a previously determined zero-offset calibration coefficient with the updated zero-offset calibration coefficient.