Manufacturer of Distributed Fiber Optic Vibration Sensing System (DVS) products

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 (such as temperature, magnetic field, angular velocity, жана башкалар). Common optical signal characteristics include light intensity, frequency, phase, polarization state, жана башкалар. Compared with other types of sensors, optical fiber sensors have a series of advantages. Advantages, including size, weight, tolerance to harsh environments, жана башкалар, Ошондуктан, it has been widely applied and has become a huge emerging industry.

The distributed fiber optic 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.

мүнөздөмөлөрү distributed fiber optic DVS vibration monitoring system:

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

Positioning accuracy up to ± 10 метр;

Шамал жана жамгыр сыяктуу адам эмес баскынчылык кырдаалдарды айырмалай алат, жана жалган сигналдарды азайтат;

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

Intelligent analysis module filters out false alarms;

Коргонуу зонасында электр менен жабдуу талап кылынбайт;

The entire defense zone is passive, жарылууга туруктуу, resistant to lightning strikes, electromagnetic interference, does not produce sparks, and has a long service life;

Була-оптика табигый түрдө коопсуз жана жогорку кооптуу шарттарда колдонулушу мүмкүн;

Support multi machine parallel connection and expand monitoring range;

Бир нече сигнализация ыкмалары жана алыстан тейлөөнү башкаруу;

Так жайгаштыруу үчүн электрондук карталар менен бирге колдонсо болот;

Системаны куруу оңой жана техникалык тейлөөгө чыгымдар аз;

Була-оптикалык температура сенсору, Интеллектуалдык мониторинг системасы, Кытайда бөлүштүрүлгөн була-оптикалык өндүрүүчүсү