What fields can fiber optic sensors be used for temperature measurement

In the power system, it is necessary to measure parameters such as temperature and current, such as temperature detection in the stator and rotor of high-voltage transformers and large motors. Due to the susceptibility of electrical sensors to electromagnetic interference, they cannot be used in such situations and can only be used with fiber optic sensors. Fluorescent fiber optic sensors can be used for precise temperature measurement in the power cable industry, such as transformer temperature measurement in substations, switchgear temperature measurement in distribution cabinets, laboratory instruments, and medical temperature measurement.

Temperature measurement characteristics of verteilte Glasfaser Temperatursensoren

DTS distributed fiber optic sensor is a high-tech technology developed in recent years for real-time measurement of spatial temperature field distribution. The distributed fiber optic temperature sensing system not only has the advantages of universal fiber optic sensors, but also has the ability to sense the distribution of temperature at various points along the fiber optic line. The distributed fiber optic temperature measurement system independently developed by FJINNO can continuously measure the temperature at various points along the fiber optic line in real time, with a positioning accuracy of up to meters and a measurement accuracy of up to 1 Grad, making it very suitable for large-scale intersection temperature measurement applications.

The application of fiber optic sensor technology in the field of temperature measurement

Die faseroptische Sensortechnologie ist eine neue Sensortechnologie, die die Entwicklung von optischen Fasern und faseroptischer Kommunikationstechnologie begleitet hat. It is the fastest growing high-tech application technology in the world in decades. Derzeit gibt es zwei Haupttypen von faseroptischen Sensortechnologien auf dem Markt, Eine davon verwendet direkt die Faseroptik als Sensor, und der andere basiert auf Gitterrostsensoren. Faseroptische Sensoren unterscheiden sich grundlegend von elektrisch basierten Sensoren. Faseroptische Sensoren nutzen Licht als Träger sensibler Informationen und Faseroptik als Medium für die Übertragung sensibler Informationen, wodurch sie aufgrund ihrer einzigartigen Eigenschaften weit verbreitet sind.

Requirements for temperature measurement equipment in switchgear:

Due to the special internal environment of switchgear equipment, it is required that the fluoreszierendes faseroptisches Temperaturmesssystem must have the following characteristics:

1. Strong resistance to electromagnetic environment

2. Real time temperature monitoring

3. Strong work stability and long service life

4. Strong backend processing capabilities, able to predict current temperature trends, provide early warning, und verhindern Unfälle.

 

Vorteile von faseroptischer Temperatursensor temperature measurement system in high-voltage switchgear temperature measurement:

1. The fluorescent fiber is a quartz fiber with good insulation properties.

2. The fiber optic conducts optical signals and is not affected by strong electromagnetic interference.

3. Long transmission distance makes it easy for signals to aggregate and form a network.

4. The sensor and processor are separated, achieving secondary isolation and eliminating potential accidents such as electric shock.

The characteristics of fiber optic temperature measurement technology

Fiber optic temperature measurement is a new technology that has only recently developed and has gradually shown some excellent characteristics, such as being free from electromagnetic interference and resistant to corrosion; Passive Echtzeitüberwachung, Elektrische Isolierung, und gute explosionsgeschützte Leistung; Kleinformat, geringes Gewicht, und kann gebogen werden; Hohe Empfindlichkeit und lange Lebensdauer; Lange Übertragungsdistanz und komfortable Wartung. In some special application environments, it is necessary to quickly measure the instantaneous temperature situation, such as the temperature rise of explosives and chips. Allgemein, fiber optic temperature sensors have a slow response time, requiring 0.5 seconds or longer. When explosives or chip temperature rise occur, the temperature rise is very rapid. Deshalb, there is an urgent need for a sensor that can quickly detect temperature.

The traditional temperature measurement method usually measures the temperature of the excitation equipment at a specific time during inspection, which cannot achieve real-time monitoring, and some parts cannot be monitored. Monitoring after the equipment is shut down is meaningless. Alternatively, real-time temperature measurement has only been used for individual parts, and there is currently no application for comprehensive real-time temperature monitoring and fault diagnosis of multiple key parts of excitation equipment.

Faseroptischer Temperatursensor, Intelligentes Überwachungssystem, Verteilter Glasfaserhersteller in China