fiber optic alarm systems Using distributed temperature sensing cables-INNO

Introduction to Distributed Fiber Optic Temperature Detection Fire Alarm System

The distributed fiber optic temperature detection fire alarm system is a new and efficient temperature detection and alarm facility, ambayo inaunganisha kompyuta, Mawasiliano ya macho ya nyuzi, Sensing ya macho ya nyuzi, maambukizi ya fiber optic, Udhibiti wa umeme na teknolojia zingine. Based on the temperature measurement principle of fiber optic backscatter changing with temperature, advanced OFDR technology is used to monitor the feedback information on the fiber optic in real time through fiber optic detectors, kupima mabadiliko ya joto katika pointi mbalimbali kwenye fiber optic, na kufuatilia hali ya joto ya eneo lililotambuliwa kwa wakati halisi. ya Usambazaji wa nyuzi za nyuzi temperature sensing fire alarm system mainly consists of fiber optic temperature sensing fire detectors (referred to as fiber optic detectors), fiber optic temperature sensing fire detection signal processors (referred to as fiber optic signal processors), computer display processing units, fire alarm controllers, and power supplies.

The communication interface between the fiber optic signal processor and the computer is: connected to the local computer through a serial communication RS232 port; Connect to remote computers through LAN TCP/IP ports. The local computer is used to achieve data communication between software systems and fiber optic signal processors. The input and output interfaces of the fiber optic signal processor can achieve functions such as alarm output, fault output, alarm signal input, and alarm reset control of the distributed linear fiber optic temperature sensing fire detection system. When used in conjunction with the encoding input/output module, the fire alarm controller can directly receive normal, kengele ya moto, Onyo, and fault information, and can reset the fiber optic signal processor.

Characteristics of Distributed Fiber Optic Temperature Sensing Fire Alarm System

The pulse laser source of the distributed fiber optic temperature detection fire alarm system has a longer lifespan and higher reliability. The specific system features are as follows:

(1) Salama na ya kuaminika. The sensor is based on light detection, which is inherently safe and explosion-proof, resistant to power frequency and radio frequency electromagnetic interference, and has a low false alarm rate.

(2) Distribution measurement. The fiber optic signal processor can be connected to the fiber optic detector to continuously detect the temperature of the fiber optic detector in real-time.

(3) Flexible alarm settings. Fiber optic detectors can be divided into up to 128 detection zones, and alarm parameters and linkage relationships can be set on-site for each detection zone.

(4) Advanced alarm methods. It can comprehensively utilize the setting of multi-level temperature alarms/temperature rise rates/temperature rise trends for continuous monitoring, accurately display the temperature status at any point at any time, and provide early warning before a fire occurs.

(5) Accurate temperature measurement and positioning. The temperature accuracy can reach ± 1 °C, and the spatial resolution can reach 0.5 °C. Accurately determine the type of temperature change, display the location of the accident point and temperature values.

(6) The information display is intuitive and rich. By displaying alarm parameters, detecting zone distribution, Kupima joto, fire spread direction and other information through a computer, operational data records and charts can be provided.

(7) On site fiber optic detectors are maintenance free. Easy to debug, detector ya fiber optic inalindwa na shea ya plastiki ya polyamide yenye nguvu ya juu au tube ya chuma cha pua, na kigunduzi cha fiber optic chenyewe hutumika kama kitambuzi bila matengenezo. Inaweza kuhimili mazingira mbalimbali magumu (unyevu, joto la juu, baridi kali, kutu) na ina maisha ya huduma ya hadi 30 Miaka. Baada ya kengele, hakuna haja ya kwenda kwenye tovuti kwa ajili ya kuweka upya na usindikaji.

Matumizi ya Mfumo wa Kengele ya Kuhisi Halijoto ya Fiber Optic Uliosambazwa katika Maeneo

Mfumo wa kengele ya moto ya kuhisi halijoto ya nyuzinyuzi iliyosambazwa hutoa suluhu kamili ya ugunduzi wa moto na faida kubwa za kiteknolojia zilizokomaa na utendakazi kamili wa usalama.. Upeo wa matumizi ya mfumo ni kama ifuatavyo:

(1) Upimaji wa joto na ufuatiliaji katika maeneo muhimu. Kwa mfano: trei za cable za kupanda nguvu, burners za boiler za kupanda nguvu, substations, mikanda ya maambukizi ya mfumo wa makaa ya mawe, vyumba vya kompyuta, television stations, communication rooms, mobile base stations, control rooms, cable channels, Nk.

(2) Temperature measurement and monitoring in hazardous areas. Kwa mfano: mizinga ya mafuta, gas tanks, coal silos, hazardous material warehouses, Nk.

(3) Temperature measurement and monitoring in the field of transportation. Kwa mfano: njia ndogo, mahandaki, Reli, viwanja vya ndege, cabins, Nk.

(4) Large area and wide range temperature measurement and monitoring. Kwa mfano: granaries, cold storage, maghala, paper mills, distilleries, pharmaceutical factories, beverage factories, tobacco factories, Nk.

(5) Measurement and monitoring of surface temperature of pressure vessels. Kwa mfano, gasifiers, reaction tanks, Nk.

The significant features of kipimo cha joto cha nyuzi za nyuzi technology are anti electromagnetic interference, Usalama wa ndani na ushahidi wa mlipuko, and real-time continuous temperature detection. In industrial and mining enterprises, many changes in physical properties are directly reflected in the rise and fall of temperature, so the significance of temperature monitoring is becoming increasingly significant. Overheating at cable joints, partial discharge of high-voltage cables, and other locations is the main hidden danger of large-scale accidents in industrial sites, and it is also an important reason for the frequent occurrence of accidents. How to implement online testing, how to predict equipment safety and analyze temperature trend changes, how to scientifically analyze equipment quality, ubora wa uhandisi, mazingira ya kufanya kazi, mode ya uendeshaji, equipment aging and fatigue status, usawa wa mzigo, Nk. through real-time data. Kwa miaka mingi, due to the limitations of technological level, kiwango cha uendeshaji salama cha mfumo wa nguvu kimezuiliwa kwa kiasi fulani. Although attempts have been made to use infrared thermometers, vifaa vya picha vya infrared, nyaya za kuhisi joto, partial discharge testers, and traditional point temperature measurement systems to solve the above problems, these measurement methods cannot detect the overheating and insulation aging problems caused by partial discharge of high-voltage cables, and cannot achieve online detection. Basi, they cannot provide scientific basis for safe, uendeshaji wa kiuchumi, and efficient maintenance. Distributed fiber optic temperature measurement technology has completely solved this problem, truly realizing real-time online detection of power system operating equipment. Through real-time data analysis and prediction of equipment, faults are eliminated in their early stages, truly preventing problems before they occur. Wakati huo huo, these real-time data and analysis prediction results also play a crucial role in achieving condition based maintenance, Kuboresha ufanisi wa matengenezo, and reducing maintenance and management costs in the future. With the development of fiber optic application technology, Mifumo ya kipimo cha joto cha macho ya nyuzi have become the world’s most advanced and effective continuous distributed temperature monitoring systems, widely used in industrial sites such as petrochemical, Nguvu, Usafiri, na chuma.