Tracer Gas Leak Detection with Phase-Advance Sensor Correction
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Solution Overview
Problem
Hydrogen sensors used for tracer gas leak detection have high response times, ranging from tens of seconds to several minutes, which is not suitable for many applications, and their service life is variable, affecting measurement precision.
Innovation Solution
A phase advance correction device is implemented to improve the response time of hydrogen sensors by using overdamped and underdamped correction cells, which are configured to approximate proportional-derivative type corrections, reducing the response time while maintaining measurement precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If conventional hydrogen sensors are used for tracer gas leak detection, then measurement precision is maintained, but response time is too high (tens of seconds to several minutes)
Solution Approach 1:
The patent introduces a correction device as an intermediary component between the sensor and the measurement system. This device processes the sensor signal through overdamped and underdamped correction cells that approximate proportional-derivative corrections, thereby reducing the response time without compromising the measurement precision of the original sensor.
Solution Approach 2:
The patent changes the temporal parameters of the sensor signal by applying phase advance correction. The correction device modifies the signal characteristics through overdamped and underdamped correction cells, effectively reducing the response time parameter while maintaining the accuracy of the concentration measurement.
2Speed
If sensor response time is reduced through correction devices, then speed of detection is improved, but device complexity increases
Solution Approach 1:
The correction device is segmented into distinct functional components: overdamped correction cells and underdamped correction cells. Each cell type performs a specific aspect of the proportional-derivative correction, allowing the complex function to be divided into manageable, modular units that can be independently optimized and maintained.
Data Source
AI summary
The invention relates to a tracer gas leak detection system including at least one sensor delivering a signal, referred to as the sensor signal, which is representative of a concentration of the tracer gas at the sensor. The tracer gas leak detection system includes, for at least one given sensor, a corresponding phase advance correction device delivering a corrected signal from the sensor signal delivered by the given sensor.