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Fiber Bragg Grating Sensor Application: The Best Chinese Manufacturer of Fiber Bragg Grating Sensing Perimeter Security Early Warning System

The temperature monitoring of cables, transmission optical cables, and high-voltage switchgear isolation contacts has always been a major issue in the safe operation of the power industry. Fiber optic grating sensors integrate measurement and transmission, using light waves for measurement and transmission. They have the advantages of small size, light weight, low transmission loss, no electromagnetic interference, and good insulation performance. Therefore, they are very suitable for the above temperature measurement environments. As one of the core components of fiber optic sensors, fiber optic gratings have the advantages of high sensitivity, strong resistance to electromagnetic interference, small size, and light weight, and have been widely used in civil engineering, petrochemicals, aerospace, medical and shipbuilding industries and other fields. In addition to the advantages of traditional sensors, fiber optic grating sensors also have the characteristic of wavelength encoding, which is easy to network and reuse, and can achieve quasi distributed measurement. They can be applied to harsh engineering sites.

Advantages of Fiber Bragg Grating Sensors

Fiber optic grating sensing technology has been a research hotspot in recent years. Compared with traditional sensors, fiber optic grating sensors have advantages such as resistance to electromagnetic interference, high sensitivity, and small size. For specific fiber optic grating sensors, there is a corresponding relationship between wavelength changes and ambient temperature and pressure. Therefore, in order to accurately measure temperature and pressure, wavelength demodulation technology of fiber Bragg gratings is very important. Fiber optic grating sensors can be packaged in various forms for detecting physical quantities such as temperature, strain, pressure, and displacement. With the continuous advancement of technology and the need for safety monitoring, higher requirements have been put forward for fiber optic grating sensors and demodulation equipment. This requires fiber optic grating demodulation systems to be able to measure the changes in sensor reflection wavelength at high speed, wide range, and high resolution. Fiber Bragg Grating Demodulator, capable of multi-channel and multi-sensor synchronous demodulation, has strong human-machine interaction, can effectively improve wavelength demodulation speed, and more efficiently obtain wavelength measurement values of fiber Bragg grating sensors; Effectively improving demodulation speed, with advantages such as high system integration, low cost, simple structure, convenient operation, and good human-machine interaction; It can store multiple sets of demodulated data and query historical data, and can expand the module. At the same time, it can connect multiple sensors for monitoring and unified control.

The Application Range of Fiber Bragg Grating Sensors

Fiber optic grating sensor array is a sensor array that connects multiple fiber optic grating sensors through optical fibers to achieve multiple position points and physical quantity measurements on the fiber optic. It is an important direction of fiber optic grating sensor technology. At present, fiber optic grating sensor arrays have been applied in fields such as ocean parameter measurement and building structural health monitoring. For example, fiber optic grating temperature and depth measurement systems are used for ocean temperature and depth profile information measurement, fiber optic grating strain measurement systems are used for bridge and tunnel strain measurement, and fiber optic grating inclination measurement systems are used for landslide monitoring.

Fiber Bragg Grating Sensing Perimeter Security Early Warning System

With the vigorous development of the social economy, the country and society are paying more and more attention to the safety issues of people’s lives, property, and living environment; The frequent occurrence of terrorist attacks and public safety accidents has further increased the demand for security warning systems. The perimeter security early warning system, installed on the perimeter of important areas or building facilities, provides early warning for intrusion into defense areas and has important applications in many military and civilian fields. The traditional perimeter security early warning system mainly includes video surveillance, infrared radiation, electronic fences, etc. The video surveillance system uses cameras to monitor the defense area, but requires security personnel to be on duty 24 hours a day. After discovering intrusion behavior, it also needs to search for clues in massive data, which consumes a lot of human resources; The infrared targeting system uses a pair of infrared emitting and receiving devices to form safety protection, but when the terrain of the defense area is complex and undulating, the difficulty and cost of system deployment greatly increase; Electronic fences use electronic pulses for safety protection, but the system has poor resistance to electromagnetic interference and is severely affected by weather conditions such as wind, rain, and lightning, resulting in a high false alarm rate.

The perimeter security warning system based on fiber optic grating sensing adopts fiber optic grating sensing technology, which has good electromagnetic interference resistance and can be used in flammable and explosive places. It is more convenient to deploy and maintain, and is suitable for deployment in complex terrains; By adopting wavelength modulation and wavelength division multiplexing technology, the system has higher reliability, greatly reduced false alarm rates, and can accurately locate intrusion locations, greatly enhancing the scalability of the system; The system analyzes the collected signals by controlling the host, accurately judges the perimeter situation, and improves the accuracy of alarms; After discovering the perimeter intrusion, the video capture function and sound and light alarm function are linked, eliminating the need for security personnel to be on duty 24 hours a day, greatly saving human resources. The perimeter security early warning system based on fiber optic grating sensing can be used for perimeter security protection in military bases, government agencies, important building facilities, flammable and explosive places, and large-scale activity venues, and has high value in both military and civilian fields.

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