Mtengenezaji wa Mfumo wa Kuhisi Mtetemo wa Fiber Optic Uliosambazwa (DVS) products-INNO

The invention of optical fiber has a history of nearly a century. The early stages of optical fiber had great losses, which limited its application. In the 1960s, under the promotion of Gao Kun and others, Corning Corporation in the United States first manufactured optical fibers with losses as low as 20 dB/km, making long-distance optical signal transmission possible, promoting the practicality of optical fiber communication and the development of related industries. The development of optical fiber communication also greatly promoted the development of software and hardware, including various optical devices and demodulation algorithms. On this basis, it was found that using changes in optical signals can be used to detect various physical parameters (kama vile joto, magnetic field, angular velocity, nk.). Common optical signal characteristics include light intensity, masafa, awamu, hali ya ubaguzi, nk. Compared with other types of sensors, optical fiber sensors have a series of advantages. Faida, including size, uzito, tolerance to harsh environments, nk, Kwa hiyo, it has been widely applied and has become a huge emerging industry.

The fiber optic iliyosambazwa vibration sensing system (DVS) is based on the optical time-domain reflection (OTDR) technology with phase information, using G652 single-mode fiber as the sensing medium. The laser emits a narrow linewidth pulse laser that is transmitted along the sensing fiber, while continuously generating backward Rayleigh scattered light, which undergoes multi beam interference. When the sensing fiber is subjected to external vibration interference, the phase of the backscattered Rayleigh light will change, causing a change in the intensity distribution of multi beam interference. The photoelectric conversion device detects changes in the intensity distribution of these interference lights and demodulates them into vibration signals. This is why DVS can detect external vibrations.

Sifa za distributed fiber optic DVS vibration monitoring system:

The monitoring distance of a single host can reach 20-40 kilomita;

Positioning accuracy up to ± 10 mita;

Inaweza kutofautisha hali zisizo za kibinadamu kama vile upepo na mvua, na kupunguza kengele za uwongo;

Polarization control module ensures precise and stable operation of the system;

Intelligent analysis module filters out false alarms;

Hakuna usambazaji wa nguvu unaohitajika katika eneo la ulinzi;

The entire defense zone is passive, isiyoweza kulipuka, resistant to lightning strikes, kuingiliwa kwa sumakuumeme, does not produce sparks, and has a long service life;

Fiber optic ni salama kiasili na inaweza kutumika katika mazingira hatarishi;

Support multi machine parallel connection and expand monitoring range;

Mbinu nyingi za kengele na usimamizi wa matengenezo ya mbali;

Inaweza kutumika kwa kushirikiana na ramani za elektroniki kwa nafasi sahihi;

Mfumo huo ni rahisi kutengeneza na una gharama ndogo za matengenezo;