A high-response distributed optical fiber vibration sensing device and implementation method
A distributed optical fiber and vibration sensing technology, applied in the field of sensors, can solve problems such as affecting the use of sensors and reducing accuracy, and achieve the effects of improving light attenuation, increasing data, and facilitating maintenance.
Active Publication Date: 2021-04-30
江子秦
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Problems solved by technology
Existing perimeter security systems include multiple monitoring systems such as pulse fences, infrared radiation, vibration cables, fiber optic vibration sensors, etc. The application fields and performance of each system are also different. High, some have good frequency response, some have high technical content, and can well adapt to the signal conversion of common vibrations, but the vibration force received by the sensor is easily offset by external influences, which reduces the accuracy and affects the use of the sensor
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Embodiment 1
[0031] The present invention provides such Figure 1-5 The shown high-frequency distributed optical fiber vibration sensing device includes a device housing 1, a fixed column 2 is arranged inside the device housing 1, and a mounting rod 3 is arranged on one side of the fixed column 2, so that A shock-absorbing airbag 4 is provided on the outside of the installation rod 3, and an optical fiber 5 is arranged between the shock-absorbing airbag 4 and the outside of the fixing column 2. One end of the optical fiber 5 is connected to a laser transmitter 6, and the other end of the optical fiber is connected to a laser A receiver 7, one end of the device housing 1 is provided with a detection mechanism;
[0032] The detection mechanism includes an installation cylinder 8, the installation cylinder 8 is arranged on the surface of the device housing 1, the inside of the installation cylinder 8 is provided with a detection cylinder 9, and the inside of the detection cylinder 9 is provid...
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The invention discloses a high-frequency distributed optical fiber vibration sensing device and a realization method, and specifically relates to the technical field of sensors, including a device housing, a fixed column is arranged inside the device housing, and a fixed column is arranged on one side of the fixed column. There is a mounting rod, a shock-absorbing airbag is arranged on the outside of the installation rod, an optical fiber is arranged between the shock-absorbing airbag and the outside of the fixing column, one end of the optical fiber is connected to a laser transmitter, and the other end of the optical fiber is connected to a laser receiver , one end of the device casing is provided with a detection mechanism; the detection mechanism includes a mounting cylinder, the installation cylinder is arranged on the surface of the device casing, and a detection cylinder is disposed inside the installation cylinder. The invention drives the pressing plate to press the optical fiber through the detection rod, and changes the overall optical attenuation at the bending part of the optical fiber by changing the curvature of the optical fiber, and uses the laser information received by the laser receiver to obtain vibration detection information according to the optical attenuation of the laser .
Description
technical field [0001] The invention relates to the technical field of sensors, and more specifically, the invention relates to a high-response distributed optical fiber vibration sensing device and an implementation method. Background technique [0002] At present, the detection and analysis of vibration information has been applied in many fields. With the development and improvement of technology, it is gradually applied to the perimeter security field. Existing perimeter security systems include multiple monitoring systems such as pulse fences, infrared radiation, vibration cables, fiber optic vibration sensors, etc. The application fields and performance of each system are also different. High, some have good frequency response, some have high technical content, and can well adapt to the signal conversion of common vibrations, but the vibration force received by the sensor is easily offset by external influences, which reduces the accuracy and affects the use of the sen...
Claims
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IPC IPC(8): G01H9/00
CPCG01H9/004
Inventor 江子秦
Owner 江子秦