Anti-overflow interrupt control method and system based on pressure and foam height cooperative detection

By performing detrending processing and frequency domain analysis on the time-series signal of foam height, and constructing a virtual foam interface height in conjunction with pressure data, the problem of inaccurate judgment of foam overflow risk in rice cookers is solved, and dynamic prediction of overflow time and accurate identification of risk are achieved.

CN122431189APending Publication Date: 2026-07-21ZHANJIANG HALLSMART ELECTRICAL APPLIANCE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHANJIANG HALLSMART ELECTRICAL APPLIANCE CO LTD
Filing Date
2026-06-12
Publication Date
2026-07-21

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Abstract

The embodiment of the application discloses a kind of based on pressure and foam height synergic detection's anti-overflow interrupt control method and system, the method of the application includes: based on pressure data, foam height data, foam height change rate and spectrum characteristic parameter constructs virtual foam interface height;Based on the virtual foam interface height and its change trend, the initial overflow time that foam reaches overflow threshold is calculated, and based on historical prediction error, adaptive correction model is constructed to obtain corrected overflow time;Adaptive pre-driving operation is carried out to electromagnetic pressure relief valve, when detecting that risk determination condition is satisfied, trigger electric rice cooker to execute risk control strategy;Through independent interrupt control module, electromagnetic pressure relief valve is driven to carry out pressure relief action.The application effectively separates liquid level change and bubble dynamics, constructs virtual foam interface to realize more accurate interface estimation, improves the accuracy, prediction accuracy and robustness of overflow risk judgment.
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