Distributed fiber optic cable temperature measurement system

Features of distributed fiber optic cable temperature measurement system

1、Immune electromagnetic interference：

Subway tunnels and other environments have strong electromagnetic interference，Traditional temperature sensors based on electrical signals are usually in terms of safety、Signal stability is greatly restricted。The anti-electromagnetic interference capability of optical fiber、Convenient networking and its inherent advantages of large signal transmission bandwidth，Make fiber optic temperature sensor break through the limitations of electrical temperature sensors，Provides very effective temperature measurement technology for environments such as subway tunnels where strong electromagnetic field interference is present。

2、Fast sex：

Temperature measurement in tunnel temperature sensing system、Very high positioning speed。To improve measurement time，Huaguang Tianrui adopts the advantages of high-speed weak signal processing technology，The shortest measurement time is 5 seconds，Fast response speed。

3、Distribution characteristics：

The cable tunnel fiber temperature measurement system can provide continuous dynamic monitoring of temperature changes at every point every meter within a range of more than ten kilometers.，You can set temperature alarm values ​​at any level。

4、Advanced：

The system has the highest performance indicators in China、The most functional、The most reliable、The most advanced distributed temperature measurement product。Key devices are preferred for high-performance devices，The core algorithm has been strictly tested。

5、accuracy

The temperature resolution of the system reaches 0.1℃，Temperature accuracy 1℃，Positioning accuracy can reach 1m。

6、flexibility

The system is a real-time online monitoring method；The time it takes for an alarm signal at any point within the monitoring range to upload to the fire alarm controller shall not exceed 60 seconds.；The monitoring system provides a continuous dynamic monitoring signal，The system can set multi-level temperature point alarm, that is, the system supports multi-level alarm，If the alarm is initially called at 50℃，60℃ pre-alarm，70Take measures, etc.，And the alarm point temperature parameter setting can be performed according to different environments；There are multiple alarm methods for differential temperature setting，In addition, the alarm parameters can be partitioned according to customer needs，Flexible alarm method。

7、compatibility

The host of the tunnel distributed fiber temperature measurement system is an open communication protocol，Provides a communication interface connected to the workstation，Display the temperature curve in the disaster prevention and alarm workstation in the central control room in a picture-text manner、Alarm location、All information on alarm temperature；The system can pass RS232、RS485、Built-in relay、RJ45 or other industrial protocols and other output forms and PC、Fire alarm system and other control equipment are connected，Make sound and light alarm，Accurate signal output、whole。

8、Security

Distributed temperature monitoring system has safety recording function，Can store historical data within one year，And can be reviewed effectively。Single-ended operation，Remote Diagnosis，Minimum remote diagnosis can be provided by specialized engineers through LAN；If the fiber is damaged，The system can locate damaged points instantly，And fused it through an optical fiber splicer，No need to stop measuring，This is very important for effective online monitoring.；Intrinsic safety of optical cables，Use optical signals,No mutual electromagnetic interference with the cable。

9、Simple laying

Distributed fiber temperature measurement system is easy to install，The optical cable can be laid directly on the surface of the cable to be detected，And focus on monitoring of cable connectors。The software system can intuitively display the temperature change information and location of the measured point。

Cable tunnel distributed fiber temperature measurement system solution

The distributed fiber temperature measurement system independently developed by Huaguang Tianrui is laid through cables and along subway tunnels.，Real-time monitoring of temperature of long-distance subway systems，Discover cable and tunnel overheating points in time、Exception points，Ensure the safe operation of power cables、Provide high efficiency in fire warning in subway systems、High accuracy monitoring scheme。Safely increase loop current carrying capacity；Periodic state of emergency assessment can be achieved；Drive external alarm or other emergency systems；Hot spots (especially cable connectors for accident hazards) and other environmental abnormalities are found。Can be based on the owner's needs，Designed as a distributed fiber temperature measurement system with 8 channels (quantity can be customized) and 10 kilometers (distance needs can be customized)，Applied to real-time online temperature measurement of 110KV two-loop high-voltage cables in the owner's cable tunnel and environmental temperature measurement at the top of the tunnel。The temperature measurement optical cable is tied and laid in a straight line，Focus on monitoring the real-time temperature of a cable connector that is located at a distance of specific meters according to the requirements，And the SMS Alarm Module can be installed according to customer requirements，Plays an early warning role。It can realize monitoring of the entire area，Designed according to "No one on duty"，Upload alarm information in real time to the project in the comprehensive monitoring system until now，The fiber optic temperature measurement system is operating well，Technical indicators fully meet the design requirements。

Product model parameter index of distributed fiber optic temperature measurement system in cable tunnel：

The following parameters are standard parameter display，Can be customized according to customer specific needs，Call us for more timely response：0591-83841511