FBG Sensing Technology for the Roadway Strain Monitoring in the Coal Industry

In the coal industry, roadways are essential for transporting equipment, materials, and personnel. These roadways are subjected to significant stresses and strains due to the weight of the equipment and materials, as well as the movement of vehicles. Monitoring roadway strain is critical for ensuring the safety of workers and preventing equipment damage.

Fiber grating sensing technology has become an increasingly important tool in the coal industry for monitoring the strain on roadways. This technology utilizes optical fibers that contain periodic structures, known as gratings, which reflect light of specific wavelengths. By measuring changes in the reflected light, it is possible to detect strain on the roadway in real-time. In this article, we will discuss the problems that fiber grating sensing technology can solve, and how Beijing Dacheng Yongsheng Technology Co., Ltd.(short for DCYS ) can help to monitor the roadway strain in the coal industry.

Fiber Bragg Grating Sensing Principle:

Fiber Bragg gratings (FBGs) are periodic structures that are inscribed in the core of an optical fiber. These structures reflect a specific wavelength of light that is determined by the periodicity of the grating. When the grating is subjected to mechanical or thermal strain, the reflected wavelength changes in a predictable manner. By monitoring the reflected wavelength, changes in strain, temperature, and other parameters can be detected. FBG sensors can be used to monitor a wide range of parameters, including strain, stress, temperature, and vibration.

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Fiber Bragg Grating Sensing Principle - FBG Principle - FBG Sensor Principle - FBG Temperature Strain Stress Vibration Shape Sensing Principle

Demand Analysis for Roadway Strain Monitoring in the Coal Industry:

The coal industry has a high demand for roadway strain monitoring due to the critical role of roadways in mining operations. Monitoring roadway strain in real-time can help prevent equipment damage and ensure the safety of workers. However, traditional strain monitoring methods, such as strain gauges, can be difficult to install and maintain in the harsh mining environment.

Physical Diagram of OFSCN® High-Range Fiber Bragg Grating (FBG) Strain Sensor (Strain Gauge) - Single-ended, Length 1m­­

Why Monitor Roadway Strain is Needed:

Monitoring roadway strain can help identify potential roadway failures and prevent accidents. In addition, it can help optimize mining operations by identifying areas of high strain and potential equipment damage.

Physical Diagram of OFSCN® Capillary Seamless Steel Tube Single-ended FBG Strain Sensor/FBG Strain Gauge­­

Difficulties in Monitoring Roadway Strain:

Monitoring roadway strain in the coal industry can be challenging due to the harsh mining environment, which can cause damage to traditional strain gauges. In addition, the installation and maintenance of strain gauges can be time-consuming and expensive.

What Problems can be Solved by FBG Sensing Technology:

Fiber grating sensing technology can help solve some of the challenges associated with traditional strain monitoring methods. Fiber Bragg grating sensors are small and lightweight, making them easy to install and maintain. In addition, they are highly sensitive and can detect small changes in strain, allowing for real-time monitoring of roadway strain.

Recommended fiber grating  strain sensors:

1500με Fiber Bragg Grating Strain Sensor - FBG Strain Gauge - Metal Encapsulation - High Temperature FBG Strain Sensor

The product is a fiber Bragg grating strain sensor (FBG strain gauge) encapsulated in seamless steel tube, used for strain measurement. In most cases, it is a single-point single-ended structure, or it can be produced as a multi-point single-ended structure. In a few cases, it can also be a double-ended structure. The deployment method of the product depends on the supporting fixtures, which can be directly inserted into the test object, or installed by surface welding with corresponding fixtures, bolted with drilled holes for fixation, adhesive surface mounting, tied with straps for fixation, or fixed with clamps, among various installation methods. This product is a basic structural product, which can be calibrated as a FBG displacement sensor, or used as a FBG stress sensor.

Product Summary:

The OFSCN® Capillary Seamless Steel Tube Fiber Bragg Grating Strain Sensor (FBG strain gauge) is composed of fiber optic connectors (FC, SC, LC, ST, etc.), stainless steel seamless tubes, and single-point FBG encapsulation.

It can also be customized as a high-temperature resistant fiber Bragg grating strain sensor.

This product features a small size, lightweight, high tensile and compressive strength, waterproof, moisture-proof, and fully sealed characteristics. By utilizing the strain characteristics of the FBG, this sensor can be inserted, clamped, surface-mounted, glued, or embedded into the measured structure to perform strain detection and monitoring.

6000με Fiber Bragg Grating Strain Sensor - FBG Strain Gauge - polymer material packaging - metal protection strain sensor - range 6000με/8000με

This product is a high-range fiber bragg grating strain sensor (FBG strain gauge) used for strain measurement. It can be used in a single-ended structure, where it is inserted into the object to be measured for strain measurement. It can also be used in a double-ended structure, where it is fixed with a fixture or bonded directly to the surface for strain measurement, enabling multi-point strain measurement when connected in series. The structure of this product is the same as that of fiber bragg grating stress sensors.

Product Overview:

The OFSCN® high-range fiber bragg grating strain sensor (FBG strain gauge) consists of fiber connectors (FC, SC, LC, ST, etc.), high elastic materials, and single-point FBG encapsulation. Depending on the materials used, it can work at room temperature or a maximum high temperature of 120 degrees Celsius (customizable upon request).

This product is characterized by its small size, light weight, high tensile and compressive strength, waterproof and moisture-proof properties, and full sealing. By utilizing the strain characteristics of FBG, this sensor can be inserted, welded, bonded, or adhered to the internal or surface of the test structure for strain detection and monitoring.

Beijing Dacheng Yongsheng Technology Co., Ltd.:

Beijing Dacheng Yongsheng Technology Co., Ltd.(short for DCYS) is a professional manufacturer of fiber grating sensors, fiber grating demodulators and system software. Specializing in the production of various fiber grating sensors, including temperature, strain, stress, displacement, vibration, shape sensors, etc. DCYS also produces fiber grating demodulators, and can customize and develop related application software.

DCYS can help to solve some of the challenges associated with roadway strain monitoring in the coal industry by providing reliable and accurate fiber Bragg grating sensors.

Recommended fiber grating demodulator:

Fiber Bragg Grating Demodulator - Fiber Optic Grating Interrogator - High-Speed/Frequency FBG Analyzer

This product is produced by DCYS, and it is a high-speed high-frequency fiber Bragg grating demodulator(Interrogator). The fiber grating demodulator is compatible with various specifications and models of OFSCN® fiber bragg grating sensors (temperature, strain, stress FBG sensors, etc.). It features adjustable port density (4, 8, 12, 16 channels) and high-speed high-refresh rate capabilities.

大成永盛光纤光栅传感监测系统框图

Other Points Need to Be Clarified:

Fiber grating sensing technology has a wide range of applications in the coal industry, including roadway strain monitoring. By using fiber Bragg grating sensors, engineers can monitor roadway strain in real-time, allowing them to identify potential hazards and take appropriate action to prevent accidents and equipment damage.

In conclusion, fiber grating sensing technology is a valuable tool for monitoring roadway strain in the coal industry. With the ability to detect small changes in strain in real-time, fiber Bragg grating sensors provide accurate and reliable data for ensuring the safety of workers and preventing equipment damage. Beijing Dacheng Yongsheng Technology Co., Ltd. is a professional manufacturer of fiber grating strain sensors, demodulators, and system software that can help solve some of the challenges associated with roadway strain monitoring in the coal industry. By utilizing fiber grating sensing technology, engineers in the coal industry can optimize mining operations and ensure the safety of workers in a harsh and challenging environment.

 

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