Probe type fiber Bragg grating displacement sensor

The FBGD series of products includes various fiber Bragg grating sensing product series such as temperature, strain, pressure, displacement, acceleration, and optical sensing network analyzers, with product performance reaching industry standards. The company's products can be widely used for real-time and distributed health monitoring of bridges, civil and industrial buildings, dams, transmission pipelines, power facilities, offshore oil platforms, and other large-scale architectures. These products uphold all the inherent excellent characteristics of fiber optic sensors, including intrinsic safety, electromagnetic interference resistance, corrosion resistance, high temperature resistance, and long service life; In terms of application, our company has its own technical characteristics, and each product series has strong networking capabilities. Different series of products can be mixed and networked freely, and can be equipped with the same demodulation equipment, providing customers with simple and complete technical solutions.

(1)Probe type fiber Bragg grating displacement sensor

The FBGD series fiber Bragg grating has the advantages of quasi distributed networking (tens to hundreds of points), high measurement resolution (0.01% FS), wide measurement range (300 μ m-20mm), wide working temperature range, no electromagnetic interference, corrosion resistance, impact vibration resistance, fatigue resistance, and long service life. It can be used for measuring deformation and relative movement in geotechnical engineering, as well as for crack monitoring in disease engineering.

The FBGD series fiber Bragg grating probe detects the relative displacement of the probe by detecting the relative change in the center wavelength of the reflected light from the fiber Bragg grating. It adopts a special structural design, temperature self compensation, and is not affected by environmental temperature; The measurement accuracy is not affected by fluctuations in the light source or bending losses in the transmission line, and can be directly transmitted remotely through optical fibers (over 40km) without the need for power supply at the monitoring site. It has high accuracy, long service life, and stable performance, and can be widely used for deep displacement monitoring of geotechnical engineering, underground engineering, and highways such as dams, ship locks, slopes, tunnels, etc.

The probe type fiber Bragg grating is mainly composed of several parts such as sensors, anchor heads, probe rods, and hole fixing systems.

The FBGD series fiber Bragg grating has the advantages of quasi distributed networking (tens to hundreds of points), high measurement resolution (0.01% FS), wide measurement range (300 μ m-20mm), wide working temperature range, no electromagnetic interference, corrosion resistance, impact vibration resistance, fatigue resistance, and long service life. It can be used for measuring deformation and relative movement in geotechnical engineering, as well as for crack monitoring in disease engineering.

(II)Cable type fiber Bragg gratingformuladisplacement sensor

The FBGD series fiber Bragg grating cable type detects the relative displacement of the fixed end of the cable by the relative change of the center wavelength of the reflected light from the fiber Bragg grating. It adopts a special structural design, temperature self compensation, and is not affected by environmental temperature; The measurement accuracy is not affected by fluctuations in the light source or bending losses in the transmission line, and can be directly transmitted remotely through optical fibers (over 40km) without the need for power supply at the monitoring site. It has high accuracy, long lifespan, and stable performance, and can be widely used for monitoring the relative displacement changes between various cracks and structures. The sensor is easy to disassemble and can be reused multiple times.

The pull type fiber Bragg grating is mainly composed of sensors, brackets, pull wires and connectors, clamp fixing accessories, and other parts.