Abstract: The optical fiber sensing system is provided. The optical fiber sensing system comprises an optical fiber measuring module, a floating module, and a containing structure. The floating module disposed in the containing structure has a plurality of floating units. Each floating unit has a mass element and a vibration absorbing structure. It is adapted to apply appropriate tensile force to the optical fiber measuring module by adjusting counterweight of the quality bodies. The vibrating influence to the optical fiber measuring system would be reduced through the vibration absorbing structure.

Abstract: The optical fiber sensing method of the present invention includes steps of: joining heat shrinkable tubes to two ends of a sensing segment of an optical fiber; coupling a fixing element on the heat shrinkable tube below the sensing segment; detachably connecting at least one floating element to the fixing element; placing the floating element into a fluid; and providing an input signal to the sensing segment and generating an output signal after the input signal is processed by the sensing segment, wherein the tensile force applied to the sensing segment would change with variation of the buoyant force upon the floating element, resulting in change of the output signal. Accordingly, the optical fiber sensing method has numerous advantages, including rapid on-site construction, recyclability of components and changeability of design parameters.

Abstract: The optical fiber sensing method of the present invention includes steps of: joining heat shrinkable tubes to two ends of a sensing segment of an optical fiber; coupling a fixing element on the heat shrinkable tube below the sensing segment; detachably connecting at least one floating element to the fixing element; placing the floating element into a fluid; and providing an input signal to the sensing segment and generating an output signal after the input signal is processed by the sensing segment, wherein the tensile force applied to the sensing segment would change with variation of the buoyant force upon the floating element, resulting in change of the output signal. Accordingly, the optical fiber sensing method has numerous advantages, including rapid on-site construction, recyclability of components and changeability of design parameters.

Abstract: The present invention provides an integrated system of full optical complete bridge safety monitoring with speech warming for smart phones. The Integrated system of full optical complete bridge safety monitoring includes a stabilizing device, optical sensing device and communication device. The basic structure involves cable and optical fiber connecting two ends and joined by heat shrink tubes. A measuring segment is located between two heat shrink tubes. The stabilizing device provides a pre-determined tensile strength to the measuring segment. The optical fiber sensing device detects a response via a Fiber Bragg grating in the optical fiber's measuring segment. When the measuring segment receives a response, it changes from first phase to second phase and creates a signal change from the reflected signals. Signal processing device converts the signal changes to physical parameters. The communication device sends warning signals to users.

Abstract: The present invention provides an integrated system of full optical complete bridge safety monitoring with speech warming for smart phones. The Integrated system of full optical complete bridge safety monitoring includes a stabilizing device, optical sensing device and communication device. The basic structure involves cable and optical fiber connecting two ends and joined by heat shrink tubes. A measuring segment is located between two heat shrink tubes. The stabilizing device provides a pre-determined tensile strength to the measuring segment. The optical fiber sensing device detects a response via a Fiber Bragg grating in the optical fiber's measuring segment. When the measuring segment receives a response, it changes from first phase to second phase and creates a signal change from the reflected signals. Signal processing device converts the signal changes to physical parameters. The communication device sends warning signals to users.