Distributed optical fiber vibration sensing system, acoustic emission monitoring system and manufacturing method
A technology of vibration sensing system and distributed optical fiber, which is applied in the direction of using acoustic wave emission technology for material analysis, measuring devices, and using wave/particle radiation, etc., which can solve high cost, poor user experience, high rate of false positives and false positives, etc. problem, achieve the effect of high damage threshold, simple structure and convenient use
Pending Publication Date: 2022-04-22
中企科信技术股份有限公司
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Problems solved by technology
[0002] Some of the existing domestic vibration sensing technologies use point-type fiber grating sensors, but they are only suitable for measuring static physical quantities, not suitable for monitoring dynamic signals, and the rate of false alarms and false alarms is high. For perimeter security, the user experience is average; some use distributed optical fibers, but there are still problems such as high false alarm rate and no response to a single event, resulting in poor user experience
Although there are relatively advanced vibration sensing technologies with good user experience in foreign countries, they are not sold domestically.
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[0020] like Figure 1-4 As shown, the present embodiment provides a distributed fiber optic vibration sensing system and an acoustic emission monitoring system and a manufacturing method, including a distributed fiber optic vibration sensing system and a fiber optic acoustic emission monitoring system, and the distributed fiber optic vibration sensing system includes (such as figure 1 shown):
[0021] (1) A light source module composed of a laser and its drive unit;
[0022] (2) Sensing module composed of sensing optical fiber (sensing optical fiber is distributed optical fiber vibration sensing). In the optical fiber sensing system, the sensing optical fiber and guiding optical fiber all use non-zero dispersion single-mode optical fiber. This optical fiber The products are widely used in low-cost, high-speed, long-distance transmission networks, such as long-distance communication, trunk lines, cable TV and loop feeder networks, with the advantages of low internal loss, larg...
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The invention discloses a distributed optical fiber vibration sensing system, an acoustic emission monitoring system and a manufacturing method, and the system comprises a distributed optical fiber vibration sensing system and an optical fiber acoustic emission monitoring system. The distributed optical fiber vibration sensing system comprises a light source module composed of a laser and a driving unit thereof, a sensing module composed of sensing optical fibers, a signal processing module and a display module, and the optical fiber acoustic emission monitoring system comprises a detection system and a demodulation system; by utilizing the transmission characteristic of light waves in the optical fiber, measured (temperature, pressure, stress, strain and the like) can be continuously sensed along the length direction of the optical fiber, then signal processing is carried out on vibration information sensed by the optical fiber, and an early warning signal is sent out, so that the purpose of early warning is achieved.
Description
technical field [0001] The invention belongs to the technical field of semiconductors, and in particular relates to a distributed optical fiber vibration sensing system, an acoustic emission monitoring system and a manufacturing method. Background technique [0002] Some of the existing domestic vibration sensing technologies use point-type fiber grating sensors, but they are only suitable for measuring static physical quantities, not suitable for monitoring dynamic signals, and the rate of false alarms and false alarms is high. For perimeter security, the user experience is average; some use distributed optical fibers, but there are still problems such as high false alarm rate and no response to a single event, resulting in poor user experience. Although there are relatively advanced vibration sensing technologies with good user experience abroad, they are not sold domestically. Contents of the invention [0003] In view of the above defects, the present invention provid...
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IPC IPC(8): G01H9/00G01N29/14
CPCG01H9/004G01N29/14
Inventor 邱德武范鑫烨邱德全邱德才
Owner 中企科信技术股份有限公司