Integrated sensing fiber and acoustic emission sensing system and method for monitoring the safety of a structure

摘要

The present invention provides a sensing optical fiber and acoustic radiation integrated sensing system and method for monitoring the safety of a structure, the system comprising a sensing optical fiber temperature interference canceller and a sensing optical fiber acoustic radiation demodulator, and a sensing optical fiber ( 206) sequentially passes the sensing optical fiber temperature interference removal device and the sensing optical fiber acoustic radiation demodulation device. The present invention integrates multiple multi-function modules into an acoustic radiation sensing system, integrating for the first time femtosecond pulse technology, acoustic radiation technology and multi-stage physical scale multi-acoustic radiated wave resonance hole technology. Providing integrated sensing system and method for sensing optical fiber acoustic radiation at multi-acoustic vibration frequency, realizing multi-level high-precision identification monitoring and detection integration technology, enabling routing and automation applications, reducing monitoring costs There are significant advantages such as improvement of monitoring accuracy and improvement of practical application capacity. [Selection] Figure 1