{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9679478","patent":{"patent_number":"US-9679478","title":"Online traffic volume monitoring system and method based on phase-sensitive optical time domain reflectometry","assignee":null,"inventors":[],"filing_date":"2015-04-23T00:00:00.000Z","publication_date":"2017-06-13T00:00:00.000Z","cpc_codes":["G08G","G08G"],"num_claims":8,"abstract":"An online traffic volume monitoring system based on a phase-sensitive optical time domain reflectometry and its monitoring method are related to a field of intelligent transportation and an application of distributed fiber sensing. A vehicle moving temporal-spatial response graph is generated by accumulating differentiated Optical Time-Domain Reflectometry tracks at different moments in one unit monitoring period for traffic volume statistics, and then converted into a vehicle moving trajectory image through binarization and image pre-processing. Parameters of the moving vehicles are detected by utilizing a search-match method. A traffic volume, moving speeds, moving directions and locations are obtained respectively from detected trajectory number, and a tilt angle and pixel positions. The monitoring method is helpful to solve traffic congestion problem and informing drivers of real-time traffic volume, and contributes to realize an intelligent city traffic regulation."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Online traffic volume monitoring system and method based on phase-sensitive optical time domain reflectometry","description":"An online traffic volume monitoring system based on a phase-sensitive optical time domain reflectometry and its monitoring method are related to a field of intelligent transportation and an applicatio","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9679478","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-9679478","citation_suggestion":"Patentable. \"Online traffic volume monitoring system and method based on phase-sensitive optical time domain reflectometry\" (US-9679478). https://patentable.app/patents/US-9679478","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9679478","json":"https://patentable.app/api/llm-context/US-9679478","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T12:03:42.824Z"}