Treatment method of distribution type optical fiber temperature measuring data used for fire disaster alarm

A distributed optical fiber, fire alarm technology, applied in electrical fire alarms, thermometers with physical/chemical changes, thermometers, etc., to achieve the effect of good accuracy requirements and fast response speed

Inactive Publication Date: 2009-10-28
宁波汉迪传感技术有限公司
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Problems solved by technology

[0006] In the DTS system, the traditional processing method of temperature acquisition data is realized by the method of accumulation and averaging. 30,000 times. At this time, if the temperature data is output once after 3 times of cumulative average processing, the temperature accuracy of less than 3.5°C can be achieved. Howe

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  • Treatment method of distribution type optical fiber temperature measuring data used for fire disaster alarm
  • Treatment method of distribution type optical fiber temperature measuring data used for fire disaster alarm
  • Treatment method of distribution type optical fiber temperature measuring data used for fire disaster alarm

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[0045] The present invention will be described in further detail below in conjunction with the embodiments of the drawings.

[0046] The present invention provides a method for processing distributed optical fiber temperature measurement data for fire alarm, which is used to obtain the current temperature output value T of the point to be measured on the optical cable used for fire alarm, including the following steps, see figure 1 Shown:

[0047] Step 1: Set the temperature difference threshold T f = 8;

[0048] Step 2: Intercept the 96 temperature data collected by the distributed optical fiber temperature sensor system at the point to be measured on the optical cable, and record it as t in chronological order 0 , T 1 , T 2 ……T 95 , Where t 95 Collect the latest temperature data of the point to be measured on the optical cable; intercepting 96 temperature data is mainly considered to reduce the calculation workload while ensuring the accuracy of the data;

[0049] Step 3: Calcul...

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Abstract

The invention relates to a treatment method of distribution type optical fiber temperature measuring data used for fire disaster alarm, which is characterized by comprising the following steps of: I, setting a temperature difference threshold Tf; II, intercepting the n+1 temperature data of the points to be detected on a cable and collected by a distribution type optical fiber temperature sensor system and tn refers to the currently latest temperature collection data of the points to be detected on the cable; III, calculating the average value of n temperature data before t, namely the first history temperature average value *1; IV, comparing tn with T1; if tn minus * is less than Tf, then the current temperature output value T of the points to be detected on the cable is outputted as that T=(*1 multiplied by(n+1)-x) + tn multiplied by x)/n+1; or the output value is outputted as that T=(*1 multiplied by(n+1)-y) + tn multiplied by y)/n+1; a DTS system after using the method can meet better precision requirement for insensitive areas on temperature change when the current output value of the points to be detected on the cable is outputted, and realize quicker response speed on the sensitive areas on temperature change.

Description

technical field [0001] The invention relates to a method for processing distributed optical fiber temperature measurement data for fire alarm. Background technique [0002] In highway tunnels, high-voltage cables and other projects, fire monitoring has always been the focus of the transportation and power departments. If there is no effective fire monitoring, when a fire occurs, there will often be serious accidents, which will bring great harm to the life and property of the country and the people. In recent years, tunnels have been built longer and more, and more and more urban high-voltage cables are buried underground, which makes the importance of fire monitoring more prominent. When the fire just broke out, the fire intensity, temperature, and destructiveness are relatively small. If the fire can be found and extinguished at this stage, the destructiveness and loss of the fire can be greatly reduced. [0003] Distributed optical fiber temperature sensor system (herein...

Claims

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Application Information

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IPC IPC(8): G08B17/06G01K11/32G01K11/324
Inventor 金如江
Owner 宁波汉迪传感技术有限公司
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