A duplex fault-tolerant topology dynamic self-correction system based on pressure transmitters

CN122108316APending Publication Date: 2026-05-29ANHUI KANGERRUN AUTOMATION INSTR CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ANHUI KANGERRUN AUTOMATION INSTR CO LTD
Filing Date
2026-03-17
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Traditional capillary level gauges suffer from thermal hysteresis and response delay due to the thermal expansion and contraction of silicone oil, and their installation is complex. Furthermore, the performance degradation of intelligent pressure transmitters cannot be effectively compensated by real-time correction algorithms, leading to a gradual deterioration in measurement accuracy.

Method used

The system employs intelligent pressure transmitters installed at the top and bottom of the tank, replacing hydraulic transmission with electronic direct measurement. It combines a built-in pre-trained model for real-time correction, utilizes a central processing unit for dual-channel signal comparison and fault-tolerant decision-making, monitors performance characteristic parameters, and uses trend analysis for early warning.

Benefits of technology

It improves measurement accuracy and speed, enhances system robustness, enables continued operation in the event of sensor failure, provides early warnings to avoid potential failures, optimizes maintenance resources, and improves operational efficiency.

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Abstract

The application discloses a kind of dynamic self-correction systems of duplex fault-tolerant topology based on pressure transmitter, it is related to pressure transmitter technical field, by installing intelligent transmitter on tank top tank bottom and carrying out electronic direct measurement and local correction, with digital bus synchronous upload signal;Central unit carries out double path comparison and fault-tolerant processing, realizes differential pressure liquid level measurement and degraded output under fault;Continuously monitor output offset and residual variance quantization performance;Finally, early warning performance degradation period is completed through trend analysis, complete from measurement, fault-tolerant to predictive maintenance full closed-loop management.The application has rooted out the temperature drift, slow response defect of traditional capillary scheme by electronic direct measurement and local correction;With duplex fault-tolerant topology, system continuous operation under single sensor failure is realized;By monitoring output offset and residual variance, performance degradation can be quantified;Finally, early warning is carried out to performance degradation period using trend analysis method, and measurement reliability is improved and operation and maintenance risk is reduced.
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