The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 28, 2026
Filed:
May. 30, 2024
Tongji University, Shanghai, CN;
TONGJI UNIVERSITY, Shanghai, CN;
Abstract
A sensitivity testing device and method calibrates the distributed optic-fiber temperature sensing (DOFTS) system for inflow and infiltration (I/I) identification in drainage pipeline. A temperature-adjustable water supply tank is provided with a heating rod and a high-accuracy physical water temperature sensor and is electrically connected with a centralized programmable logic controller (PLC) system; the temperature-adjustable water supply tank is connected with a water inlet of a water pump through a first connecting pipe; a water outlet of the water pump is communicated with a water inlet of an experimental pipeline through a second connecting pipe; and a water outlet of the experimental pipeline is communicated with the temperature-adjustable water supply tank through a third connecting pipe.