Distributed optical fiber sensing (dfos) system and method of using the same
AssigneeNEC Corporation
InventorsHemant Shivsagar PRASAD, Yoshiyuki YAJIMA, Daisuke IKEFUJI, Tomoyuki HINO
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Abstract
A traffic monitoring system includes a distributed acoustic sensor (DAS) connected to an optical fiber, wherein the DAS is configured to generate distributed optical fiber sensing (DFOS) data. The traffic monitoring system further includes a traffic monitoring apparatus. The traffic monitoring apparatus is configured to receive the DFOS data; receive camera data captured by a camera, wherein the camera has a camera capture range; calibrate the DFOS data using the camera data; and monitor traffic outside of the camera capture range using the calibrated DFOS data.
Claims20
A traffic monitoring system comprising:
- a distributed acoustic sensor (DAS) connected to an optical fiber, wherein the DAS is configured to generate distributed optical fiber sensing (DFOS) data;
- a traffic monitoring apparatus, wherein the traffic monitoring apparatus is configured to:
- receive the DFOS data;
- receive camera data captured by a camera, wherein the camera has a camera capture range;
- calibrate the DFOS data using the camera data;
- and
- monitor traffic outside of the camera capture range using the calibrated DFOS data.
A traffic monitoring method comprising:
- receiving distributed optical fiber sensing (DFOS) data captured by a distributed acoustic sensor (DAS) connected to an optical fiber;
- receiving camera data captured by a camera, wherein the camera has a camera capture range;
- calibrating the DFOS data using the camera data;
- and
- monitoring traffic outside of the camera capture range using the calibrated DFOS data.
A non-transitory computer readable medium containing instructions for causing a traffic monitoring apparatus to execute operations comprising:
- receiving distributed optical fiber sensing (DFOS) data captured by a distributed acoustic sensor (DAS) connected to an optical fiber;
- receiving camera data captured by a camera, wherein the camera has a camera capture range;
- calibrating the DFOS data using the camera data;
- and
- monitoring traffic outside of the camera capture range using the calibrated DFOS data.
Dependencies are inferred from the claim text.