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Speaking of the automation of the Internet of Things, the sensor has to be analyzed. The small sensor is an important part of the rapid development of the Internet of Things. With the rapid development of the Internet of Things, the sensor is also closely following!
Sensors are moving in a direction that is sensitive, precise, adaptable, compact and intelligent. In the process, fiber optic sensors, a new member of the sensor family, are favored.
Analysis of characteristics of fiber optic sensors
First, the sensitivity is higher;
Second, the geometric shape has a variety of adaptability, can be made into any shape of the fiber sensor;
Third, it is possible to manufacture devices that sense various physical information (acoustic, magnetic, temperature, rotation, etc.);
Fourth, it can be used in high voltage, electrical noise, high temperature, corrosion, or other harsh environments;
5. It also has inherent compatibility with fiber optic telemetry.
Fiber optic sensors are used in a wide range of applications, mainly in the following areas:
The application of interferometric gyroscopes and grating pressure sensors for bridges, dams, oil fields, etc. in urban construction. Fiber optic sensors can be pre-buried in concrete, carbon fiber reinforced plastics and various composite materials to test stress relaxation, construction stress and dynamic load stress to evaluate the structural performance of the bridge during short-term construction and long-term operation.
In the power system, it is necessary to measure parameters such as temperature and current, such as the detection of the temperature of the high-voltage transformer and the stator of the large motor, the temperature inside the rotor, etc. Since the electric sensor is susceptible to electromagnetic field interference, it cannot be used in such occasions, and can only be used. Fiber Optic Sensor. For example, the distributed optical fiber temperature sensor is a high-tech developed in real time for measuring the spatial temperature field distribution in real time.
Used in the production process and equipment temperature measurement of flammable and explosive materials. The fiber optic sensor is essentially a fire and explosion proof device. It does not require explosion-proof measures and is very safe and reliable. Compared with electrical sensors, it can reduce costs and increase sensitivity.
In addition, it can be applied to railway monitoring, rocket propulsion systems, and well testing.
In short, the Internet of Things and fiber-optic sensing complement each other and promote each other. Fiber has both broadband, high-capacity, long-distance transmission and significant advantages for multi-parameter, distributed, low-power sensing. Optical fiber sensing can continuously draw on new technologies for fiber-optic communication (such as new semiconductor light sources, new types of optical fibers) and new devices. Various fiber-optic sensors are expected to be widely used in the Internet of Things. Fiber optic technology has a broad application prospect in the Internet of Things. All-optical Internet of Things is expected to emerge in the future and become a new form of Internet of Things.
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