Hohai University

Chongshi Gu

Meng Yang

Huaizhi Su

Hong Luo

Wei Xie

Hezhi Liu

Zheng Fang

Provided are a water engineering seepage behavior fusing and sensing system and method. The system comprises a seepage-hidden optical fiber locating device, a seepage flow velocity distributed optical fiber monitoring device, an online seepage line diagnosis device and a seepage behavior optical fiber self-adaptive identification device, the location of a water engineering seepage point is realized by using the seepage-hidden optical fiber locating device, then, the seepage flow velocity of a water engineering is monitored by virtue of the seepage flow velocity distributed optical fiber monitoring device, the online diagnosis of a seepage line on a section of a whole water engineering structure can be realized by using the online seepage line diagnosis device, and finally, the current seepage behavior is integrally monitored and evaluated by using the seepage behavior optical fiber self-adaptive identification device, so that the water engineering seepage behavior fusing and sensing is completed. The optical information change of the optical fiber is acquired from multiple aspects and angles by using the four water engineering seepage monitoring devices, depending on the material and mechanical properties of the water engineering and relying on a distributed optical fiber monitoring technology, and furthermore, the monitoring and sensing of a seepage behavior of a water engineering are indirectly completed.

Water engineering seepage behavior fusing and sensing system and method

The present invention discloses an integrated monitoring system and monitoring method for a seepage behavior of water engineering in a complex environment, the system includes a seepage character space-time monitoring device and a sensing fiber seepage-monitoring sensitizing device, the seepage character space-time monitoring device includes a vertical force-bearing fiber-carrying column, an outer edge through pipe and a sensing fiber, a left force-bearing beam and a right force-bearing beam are disposed at two sides of the vertical force-bearing fiber-carrying column respectively, the outer edge through pipe is sleeved over the vertical force-bearing fiber-carrying column, a fiber collecting box is disposed above a second transitional round end, the sensing fiber in the fiber collecting box runs through the outer edge through pipe to be connected to a component supporting body containing a temperature measuring device, and then runs through an elastic device after sequentially bypassing the second transitional round end and a first transitional round end to be led out from a third transitional round end. The integrated monitoring system for a seepage behavior of water engineering in a complex environment, with a series of products and technologies such as research and development in basic sensing fibers and secondary processing of common sensing fibers being provided, implements quantitative and qualitative assessments in the horizontal and longitudinal directions in terms of time and space.

Integrated monitoring system and monitoring method for seepage behavior of water engineering in complex environment

A sensing optical fiber acoustic emission integrated sensing system and method for monitoring the safety of a structure which comprises a sensing optical fiber temperature interference removal device and a sensing optical fiber acoustic emission demodulation device. A sensing optical fiber () successively passes through the sensing optical fiber temperature interference removal device and the sensing optical fiber acoustic emission demodulation device. A distributed sensing optical fiber acoustic emission regulation and control device for sensing the degradation of structure performance is integrated with a sensing optical fiber acoustic emission sensing system with multiple complex devices, multiple functional modules and multiple interconnection components.

Sensing optical fiber acoustic emission integrated sensing system and method for monitoring safety of structure

A hydraulic structure seepage property distributed optical fiber sensing integrated system includes a special optical fiber for seepage measurement, an optical fiber calibration device, an optical fiber laying device, and a seepage property identification device. After the optical fiber calibration device calibrates the special optical fiber for seepage measurement on site, the special optical fiber for seepage measurement is laid and tested with the aid of the optical fiber laying device, and is connected to the seepage property identification device for information collection, processing and analysis after the test is successful.

Hydraulic structure seepage property distributed optical fiber sensing integrated system and method

A distributed sensing fiber acoustic emission fusion sensing system includes a sensing fiber temperature-sensitive compensation device and a sensing fiber acoustic emission demodulation device. A sensing fiber in the sensing fiber temperature-sensitive compensation device after being compensated enters the sensing fiber acoustic emission demodulation device.

Distributed sensing fiber acoustic emission fusion sensing system and running method

A fiber acoustic emission sensing apparatus and method including a laying device and an acoustic emission source; the laying device comprises base plate, first side plate and second side plate, the top portion of the first side plate connected with the top portion of the second side plate through an arc-shaped fiber-carrying channel, a main cavity formed by the first side plate and the second side plate; top portions of the first and second side plates respectively hinged with first and second arc-shaped covers, the lower end surface of the first arc-shaped cover fixedly connected with a first arc-shaped pressing body, the lower end surface of the second arc-shaped cover fixedly provided with a second arc-shaped pressing body, a first sensing fiber arranged under the first arc-shaped pressing body, and a second sensing fiber arranged under the second arc-shaped pressing body.

Fiber acoustic emission sensing apparatus and method for service behavior of hydraulic concrete structure

An acoustic emission source expansion apparatus integrated hydraulic engineering construction behavior fiber sensing device includes a base plate, a first side plate and a second side plate fixedly connected with two sides of the base plate, the top portion of the first side plate is connected with the top portion of the second side plate through an arc-shaped fiber-carrying channel, and a main common cavity is formed by the base plate, the first side plate, the second side plate and the arc-shaped fiber-carrying channel; a pair of sensing fibers is arranged in the arc-shaped fiber-carrying channel, the sensing fibers are tightly pressed in the arc-shaped fiber-carrying channel through a pressing block, the pressing block is provided with a plurality of springs, the springs tightly press the pressing block through a cover plate, and the cover plate is arranged on the first side plate and the second side plate.

Acoustic emission source expansion apparatus integrated hydraulic engineering construction behavior fiber sensing device

A temperature interference-free sensing fiber monitoring apparatus and application method therefor including a vacuum cavity module, a composite material flat groove module and a port fiber-fixing module, wherein the vacuum cavity module is connected with the composite material flat groove module via an glue-injection square groove, and the port fiber-fixing module is connected with the vacuum cavity module via a foursquare plug body; a sensing fiber orderly passes through the composite material flat groove module, the vacuum cavity module and the port fiber-fixing module; the vacuum cavity module, the composite material flat groove module and the port fiber-fixing module are all fixed on a temperature interference-free base platform.

Growing community of inventors

Jiangsu, China

Chongshi Gu