Kaidexing

Tel：400-110-9708

Fax：86(010)-82719489-806

Mail：kdx@cnkdx.com , cnkdx@126.com

Web：http://www.cnkdx.com

Add：1221/1245, Building A, Building 1, Jiayuan East District, Qinghe, Haidian District, Beijing

Solutions | 2020-08-19 16:37

Features:

Cable Tunnel distributed optical fiber temperature measurement system, power cable temperature measurement device, long temperature measurement distance.

Product picture:

system features:

1. Immunity to electromagnetic interference

Due to the strong electromagnetic interference in subway tunnel and other environment, the traditional temperature sensor based on electrical signal is usually limited in safety and signal stability.The advantages of optical fiber, such as anti electromagnetic interference ability, networking convenience and inherent large signal transmission bandwidth, make the optical fiber temperature sensor break through the limitation of electric temperature sensor, and provide a very effective temperature measurement technology for subway tunnel and other environment with strong electromagnetic field interference.

2. Rapidity:

The temperature measurement and positioning speed of tunnel temperature sensing system is very high.In order to improve the measurement time, Beijing kaidexing adopts the advantage of high-speed weak signal processing technology, the shortest single measurement time is 5S, and the response speed is fast.

3. Distribution characteristics:

The optical fiber temperature measurement system of cable tunnel can provide continuous and dynamic monitoring of temperature change signals at every 1 m within the range of more than 10 km, and can set any temperature alarm value at all levels.

4, advanced nature:

The system is a distributed temperature measurement product with the highest performance index, the strongest functionality, the highest reliability and the most advanced technology.High performance devices are preferred for key devices, and the core algorithm has been strictly tested.

5. The temperature resolution of the accuracy system is 0.1 ℃, the temperature accuracy is 1 ℃, and the positioning accuracy can reach 1 m.

6. Flexibility

The system is a real-time on-line monitoring mode; the time for the alarm signal at any point in the monitoring range to be uploaded to the fire alarm controller is not more than 60 seconds; the monitoring system provides a continuous dynamic monitoring signal, and the system can set multi-level temperature point alarm, that is, the system supports multi-level alarm, such as 50 ℃ initial alarm, 60 ℃ pre alarm, 70 ℃ alarmTake measures, and can set the temperature parameters of the alarm point according to the different environment; it has a variety of alarm modes of temperature difference and constant temperature, and the alarm parameters can be set in different zones according to customer requirements, so the alarm mode is flexible.

7. Compatibility

The host computer of the tunnel distributed optical fiber temperature measurement system is an open communication protocol, which provides a communication interface connected with the workstation. In the disaster prevention and alarm workstation of the central control room, all information such as temperature curve, alarm position, alarm temperature, etc. can be displayed in graphic form in the disaster prevention alarm workstation of the central control room; the system can be output in the form of RS232, RS485, built-in relay, RJ45 or other industrial protocolsPC, fire alarm system and other control equipment are linked to make sound and light alarm, and the signal output is accurate and complete.

8. Security

The distributed temperature monitoring system has the function of safety record, which can store the historical data within one year and carry out effective audit.Single end operation, remote diagnosis, can be provided by the local area network engineers to provide the minimum system remote diagnosis; if the optical fiber is damaged, the system can locate the damaged point immediately, and weld it through the optical fiber splicing machine, without stopping the measurement, which is very important for the effective implementation of online monitoring; the detection of optical cable intrinsic safety, using optical signal,There will be no mutual electromagnetic interference with the cable.

9. Easy to lay

The distributed optical fiber temperature measurement system is easy to install, and can directly lay the optical cable on the surface of the tested cable, and focus on monitoring the cable joint.The software system can directly display the temperature change information and position of the measured point.

Parameter index:

System solutions

The distributed optical fiber temperature measurement system independently developed by Beijing kaidexing can real-time monitor the temperature of long-distance subway system through the temperature measuring optical fiber laid along the cable and subway tunnel, timely detect the hot spots and abnormal points of the cable and tunnel, ensure the safe operation of the power cable, and provide a high efficiency and high accuracy monitoring scheme for the fire warning of the subway system.It can safely increase the loop current carrying capacity, realize periodic emergency state assessment, drive external alarm or other emergency systems, and find hot spots (especially cable joints with potential accidents) and other environmental anomalies.According to the requirements of the owner, it can be designed as a distributed optical fiber temperature measurement system with 8 channels (the quantity can be customized) and 10 km (the distance can be customized), which can be applied to the real-time online temperature measurement of 110kV two circuit high-voltage cables in the owner's cable tunnel and the environmental temperature measurement at the top of the tunnel.The temperature measurement optical cable is bundled and laid in a linear way, focusing on monitoring the real-time temperature of a cable joint according to the specific meter distance required. In addition, SMS alarm module can be installed according to the customer's requirements to play an early warning role.It can realize the monitoring of the whole area. According to the "unattended" design, the alarm information can be uploaded to the integrated monitoring system in real time. Up to now, the optical fiber temperature measurement system is running well, and the technical indicators fully meet the design requirements.

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Beijing KDX Electronic Information Technology Co., Ltd., is located in Beijing's Haidian High-tech Development Zone, Company comprehensive modern new energy technology and optical fiber communication technology, is committed to in optical transmission system and image coding device and an operation and maintenance system technology and equipment research and production...

Tel：400-110-9708

Fax：86(010)-82719489-806

Website：http://www.cnkdx.com

Mail：kdx@cnkdx.com , cnkdx@126.com

Add：1221/1245, Building A, Building 1, Jiayuan East District, Qinghe, Haidian District, Beijing