مستشعرات درجة حرارة الألياف البصرية INNO ,أنظمة مراقبة درجة الحرارة.
مستشعر درجة حرارة الألياف البصرية, نظام مراقبة ذكي, الشركة المصنعة للألياف البصرية الموزعة في الصين
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Solution for fiber optic temperature measurement system in bus duct
1. Overall plan
Overall scheme design: Based on the actual situation of the busbar, FJINNO will construct a complete fiber optic temperature monitoring system for monitoring the busbar, realizing real-time monitoring of the temperature at various locations of the busbar, over limit alarm, and output alarm signals.
It is reported that there are a total of 5 bus ducts, so this plan uses 5 IFTS-MK distributed fiber optic temperature sensing systems to achieve online monitoring of the entire bus.
(1) General control room:
The data from 5 sets of distributed fiber optic temperature measurement systems should be aggregated onto the server within the main control, and the obtained temperature data, curve graphs, and bus duct alarm status should be displayed on the screen.
(2) Distributed fiber optic temperature measurement network system:
The function of this system is to directly demodulate the optical signals transmitted remotely from the distributed temperature sensing fiber optic cable through a distributed fiber optic temperature sensing demodulation system placed in the monitoring room, and transmit the demodulated data to the computer for processing to achieve terminal display and recording. It can also transmit alarm signals to external devices or systems such as alarm controllers. Each sub control room is equipped with a distributed fiber optic temperature measurement system.
(3) Fiber optic communication transmission network:
The sub control rooms at different locations can be connected to optical fibers through Ethernet ports, and the transmission signals can be directly introduced into the information processing and analysis system of the main monitoring room.
(4) Information processing and analysis system:
The system consists of a recoverable distributed fiber optic temperature sensing system and system software. The recoverable distributed fiber optic temperature sensing system includes a demodulator, an industrial computer, and wiring terminals. The system functions include information collection, processing, and transmission, while the computer software system includes information processing, analysis, transmission, storage management, warning, and alarm functions.
2. Design Scheme of Distributed Fiber Optic Temperature Measurement System
The busbar temperature monitoring system adopts distributed optical fiber monitoring. Temperature sensing optical fibers are laid on the busbar, and distributed hosts are installed in the control room, which lead temperature sensing optical fibers to the busbar. By utilizing a small portion of the diffuse scattered light reflected back along the fiber optic when the temperature changes, the signal of this backscattered light is collected and analyzed in the optoelectronic device, providing information about the temperature and determining the location of the sudden temperature change, thus determining the point of fire occurrence. When the distributed fiber optic temperature sensing host detects an abnormality, it immediately displays an alarm.
3. Technical features
(1) Using distributed fiber optic temperature sensing equipment to sense the temperature and position information of the busbar for signal detection and transmission, achieving no electricity detection and intrinsic safety and explosion prevention;
(2) استخدام استشعار درجة حرارة الألياف البصرية الموزعة المتقدمة كوحدة قياس, مع التكنولوجيا المتقدمة ودقة القياس العالية;
(4) تتميز الكابلات الضوئية الموزعة لاستشعار درجة الحرارة بنطاق درجة حرارة تشغيل طويل الأجل -40 °C إلى 150 °C, بحد أقصى 200 °C, and have a wide range of applications;
(5) Adopting a detector single loop measurement method, التثبيت بسيط والتكلفة منخفضة; Can retain redundant spare cores;
(6) Real time display of temperature in each partition, والقدرة على عرض البيانات التاريخية وتغيير المنحنيات, وكذلك متوسط التغيرات في درجات الحرارة;
(7) Compact system structure, easy installation, وصيانة مريحة;
(8) من خلال البرمجيات, different warning values and alarm values can be set according to the actual situation; The alarm methods are diversified, بما في ذلك إنذار درجة حرارة ثابتة, إنذار معدل ارتفاع درجة الحرارة, وإنذار اختلاف درجة الحرارة.
(9) من خلال البرمجيات, data queries can be performed: point by point queries, alarm record queries, interval queries, historical data queries, وطباعة التقارير.
