Temperaturni senzorji iz optičnih vlaken INNO ,sistemi za spremljanje temperature.
Senzor temperature iz optičnih vlaken, Inteligentni nadzorni sistem, Porazdeljen proizvajalec optičnih vlaken na Kitajskem
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Značilnosti Distributed Fiber Optic Temperature Measurement System
Fiber optic itself has the advantages of inherent insulation, explosion-proof, lightning protection, anti-corrosion, and electromagnetic interference resistance. Distributed fiber optic sensing technology can achieve real-time temperature monitoring over a large range and long distance.
The distributed fiber optic temperature monitoring system consists of a distributed fiber optic sensing analyzer and a temperature sensing optical cable. The DTS temperature measurement host utilizes fiber Raman scattering (OTDR) and optical time domain scattering principles to achieve online monitoring of cable surface temperature by laying temperature sensing optical cables on the cable surface.
How to install a distributed fiber optic temperature measurement system
The installation method of the distributed fiber optic temperature measurement system is relatively simple. The temperature sensing fiber is directly laid on the surface of the tested cable, which can focus on temperature monitoring of the cable joints. The distributed fiber optic software monitoring system can intuitively respond to the temperature changes and specific location information of the measured point in a timely manner on the fiber optic temperature measurement display host.
Sestava Distributed Fiber Optic Temperature Measurement System
The distributed fiber optic temperature measurement system mainly consists of a distributed fiber optic temperature sensing analyzer and backend service software. The main function of the distributed fiber optic temperature measurement system is to collect real-time temperature along the temperature sensing cable, perform data collection and storage, and the customer only needs to operate the temperature measurement system on the client computer. The distributed fiber optic temperature measurement system can achieve unmanned operation; The temperature measurement system can send text messages. When the value of the temperature measurement line reaches the alarm temperature, the alarm system can notify the administrator of the specific location of the temperature anomaly point and the specific temperature value through text messages, so as to handle it in a timely manner and avoid accidents caused by cable temperature exceeding the standard value.
Working principle of distributed fiber optic temperature measurement system
Under the trigger of the synchronous control unit, the laser will generate a high-power optical pulse, which enters a section of optical fiber placed in a constant temperature bath after passing through an optical path coupler, and then enters a temperature sensing fiber. The back component of the spontaneous Raman scattering light carrying temperature information generated by the sensing fiber returns along the original path, and is divided into two beams after passing through a splitter. Two filters with different center wavelengths are connected below to filter out Stokes light and anti Stokes light, which are then converted into electrical signals by a photodetector and sent to the data acquisition and processing unit. In the data acquisition and processing unit, it includes electrical signal amplification, denoising, algorithms, and finally displays the specific temperature value of the measured object on the display screen.
Parameters of Distributed Fiber Optic Temperature Measurement System
Monitoring distance: 2km, 4km, 10km, 30km distance can be customized
Number of channels: 2, 4, 6, 8, 16 Kanalov, customizable
Positioning accuracy: ± 1 meter
Temperature measurement accuracy: ± 1 °C
Measurement time: 2s~15s (depending on measurement distance) customizable
Območje merjenja temperature: -40 ℃~+120 ℃ (conventional fiber) -40 ℃~250 ℃ (special fiber) customizable
Fiber type: multimode fiber
system function
Distributed system display: It can compose components based on the actual user site, visually display the monitoring object, and support multi screen and multi station distributed composition.
Real time temperature curve: continuously collect temperature information within the monitoring range in real time and generate a temperature curve.
Historical data analysis: Historical temperature data can be queried for two-dimensional or three-dimensional temperature data analysis.
Partition alarm settings: Multiple partitions and types of alarm rules can be set.
There are various alarm methods: sound and light alarm, relay alarm, SMS alarm, email alarm, itd.
Alarm processing query: Supports processing of alarm data and querying of alarm history.
Statistical analysis report: Analyze temperature data and alarm data and output them in various formats.
Multi level networked monitoring: supports network monitoring of multiple temperature measurement hosts, facilitates centralized management, and supports multiple access methods.
System embedding and expansion: The system can easily access the backbone monitoring network and support expansion to general interfaces.
Application Fields of Distributed Fiber Optic Temperature Measurement System
The distributed fiber optic temperature measurement system can be widely used for temperature monitoring of high-voltage cables in cable trenches, Kabelski nosilci, and cable tunnels in multiple industries such as power, coal mines, petrochemicals, and steel metallurgy;
Temperature monitoring and fire warning for comprehensive pipe gallery highway tunnels, river crossing tunnels, and subway tunnels;
Real time online temperature monitoring is conducted in important equipment areas such as coal mine goaf temperature monitoring, port areas, conveyor belts, and grain silos;
Monitoring of top temperature of oil storage tanks, temperature monitoring of oil tank bodies, and temperature monitoring of oil tank pipelines;
Temperature monitoring of concrete solidification and maintenance for dams, riverbanks, and bridges.
DTS distributed fiber optic temperature measurement technology is a new generation of temperature sensing technology developed recently to meet the temperature measurement needs of the domestic power cable industry for real-time measurement of spatial temperature field distribution. Distributed fiber optic temperature measurement systems have continuous distributed monitoring, real-time synchronous monitoring of multiple devices, and fiber optic sensors themselves have anti electromagnetic interference, corrosion resistance, long measurement distance, and can be applied to remote monitoring. Because fiber optic sensors have high sensitivity and measurement accuracy, they are different from other traditional temperature sensors. The measurement distance can reach up to 30 kilometers, and the spatial positioning accuracy is high. They are particularly suitable for applications that require long-distance, large-scale multi-point measurement. The distributed fiber optic temperature measurement and warning system has been widely used in various industries such as power, ports, premog, petrochemicals, Podhodov, tunnels, and water conservancy and civil engineering. Distributed monitoring, Proti elektromagnetnim motnjam, long measurement distance, and precise positioning truly achieve prevention before it happens.
