{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11988543","patent":{"patent_number":"US-11988543","title":"Abnormality detection method for flow rate control device, and flow rate monitoring method","assignee":null,"inventors":[],"filing_date":"2020-11-26T00:00:00.000Z","publication_date":"2024-05-21T00:00:00.000Z","cpc_codes":["G05D"],"num_claims":16,"abstract":"An abnormality detection method is performed in a gas supply system including a flow rate control device having a restriction part, a control valve, a flow rate control pressure sensor for measuring upstream pressure, and a control circuit. The inflow pressure sensor measures the supply pressure. An upstream on/off valve is provided upstream of the inflow pressure sensor. The method includes closing the upstream on/off valve when the gas flows at a controlled flow rate at the downstream of the restriction part by controlling an opening degree of the control valve based on the output of the flow rate control pressure sensor; measuring a drop in supply pressure on the upstream side of the control valve after closing the upstream on/off valve while keeping the control valve open; and detecting the presence or absence of abnormality in the flow rate control device based on the measured supply pressure drop."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Abnormality detection method for flow rate control device, and flow rate monitoring method","description":"An abnormality detection method is performed in a gas supply system including a flow rate control device having a restriction part, a control valve, a flow rate control pressure sensor for measuring u","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11988543","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-11988543","citation_suggestion":"Patentable. \"Abnormality detection method for flow rate control device, and flow rate monitoring method\" (US-11988543). https://patentable.app/patents/US-11988543","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11988543","json":"https://patentable.app/api/llm-context/US-11988543","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T02:41:36.581Z"}