An exploratory study on distributed thermometry using OFDR (Optical Frequency Domain Reflectometry) for automotive battery application is presented. The thermometry technique in this study uses thin and flexible optical fiber as a sensing medium. Temp...
An exploratory study on distributed thermometry using OFDR (Optical Frequency Domain Reflectometry) for automotive battery application is presented. The thermometry technique in this study uses thin and flexible optical fiber as a sensing medium. Temperature measurements are made along the sensing medium at regular intervals and is unaffected by electrical interferences. A single optical fiber sensor is capable of monitoring multiple cells within an automotive battery module with good temperature sensitivity and spatial resolution. In this study, a preliminary sensor was experimentally verified by heating a section of the sensor up to 55℃. Results showed good temperature accuracy of ±5℃ at 10㎝ of spatial resolution.