CN220709748U - Fire disaster early warning system based on distributed optical fiber sensing - Google Patents
Fire disaster early warning system based on distributed optical fiber sensing Download PDFInfo
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- CN220709748U CN220709748U CN202322361508.1U CN202322361508U CN220709748U CN 220709748 U CN220709748 U CN 220709748U CN 202322361508 U CN202322361508 U CN 202322361508U CN 220709748 U CN220709748 U CN 220709748U
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Abstract
The utility model relates to the technical field of fire early warning and discloses a fire early warning system based on distributed optical fiber sensing, which comprises a distributed optical fiber sensor, a line to be tested, a temperature demodulation host and a processor, wherein the temperature demodulation host is connected with the processor; the distributed optical fiber sensors are distributed along a line to be detected and are connected with a temperature demodulation host, the distributed optical fiber sensors are used for acquiring temperature spectrums and transmitting the temperature spectrums to the temperature demodulation host, the temperature demodulation host is used for demodulating the temperature spectrums transmitted by the distributed optical fiber sensors to obtain temperature information, the temperature demodulation host is connected with a processor, the processor is connected with an alarm device, and the processor controls the alarm device to be turned on or turned off according to the temperature information; the distributed optical fiber sensor is not bundled with the line to be measured, and the distributed optical fiber sensor is bundled and fixed on one side of the line to be measured by adopting a flexible bandage. The utility model has the effects of effectively detecting the line temperature in the tunnel and effectively reducing the possibility of fire occurrence.
Description
Technical Field
The utility model relates to the technical field of fire early warning, in particular to a fire early warning system based on distributed optical fiber sensing.
Background
Because the traffic tunnel has the characteristic of environmental sealing, the diffusion of smoke dust and heat is not facilitated when a fire disaster occurs, and the difficulty of personnel evacuation, the difficulty of fire fighting and the serious degree of fire disaster damage are caused. Therefore, how to effectively prevent the fire disaster of the traffic tunnel and ensure the fire safety of the traffic tunnel has become a concern of the fire fighting world at home and abroad.
The circuits of various lighting lamps are distributed in the tunnel, the circuits are electrified for a long time, the problems of heating and ageing of the circuits can occur under the condition of long-time electrification, and the aged circuits are extremely easy to generate fire, but fire detection equipment in the tunnel is distributed at intervals, only the temperature in the tunnel is detected, the temperature of a power supply circuit is not detected, and the problem of fire of the circuits is ignored.
Disclosure of Invention
In order to effectively detect the line temperature in a tunnel and effectively reduce the possibility of fire occurrence, the utility model provides a fire early warning system based on distributed optical fiber sensing.
The utility model provides a fire disaster early warning system based on distributed optical fiber sensing, which adopts the following technical scheme:
a fire disaster early warning system based on distributed optical fiber sensing comprises a distributed optical fiber sensor, a line to be tested, a temperature demodulation host and a processor;
the distributed optical fiber sensors are distributed along a line to be detected and are connected with a temperature demodulation host, the distributed optical fiber sensors are used for acquiring temperature spectrums and transmitting the temperature spectrums to the temperature demodulation host, the temperature demodulation host is used for demodulating the temperature spectrums transmitted by the distributed optical fiber sensors to obtain temperature information, the temperature demodulation host is connected with a processor, the processor is connected with an alarm device, and the processor controls the alarm device to be turned on or turned off according to the temperature information;
the distributed optical fiber sensor is not bundled with the line to be measured, and the distributed optical fiber sensor is bundled and fixed on one side of the line to be measured by adopting a flexible bandage.
By adopting the technical scheme, the distributed optical fiber sensor is installed near various lines in the tunnel, the temperature on the lines is monitored in real time, the distributed optical fiber sensor obtains a temperature spectrum, temperature information is obtained through the effect of the temperature demodulation host, the processor controls the on-off of the alarm equipment according to the temperature information, the purposes of detecting the temperature of the power line and paying attention to the ignition of the line are effectively achieved, and the possibility of the ignition is effectively reduced.
Because the distributed optical fiber sensor is thin and fragile, and has the characteristics of tensile resistance but not fracture resistance, the distributed optical fiber sensor and the line to be measured are not bundled together, and the distributed optical fiber sensor is prevented from being tensioned and broken when the line to be measured is tensioned.
Preferably, the line to be measured adopts wire buckle binding, a magnetic attraction ring is arranged on the line to be measured, and a magnetic attraction buckle corresponding to the magnetic attraction ring is arranged on the distributed optical fiber sensor.
Through adopting above-mentioned technical scheme, the circuit that awaits measuring is with line knot ligature, and it is firm difficult loose to tie up after tightening up, sets up magnetism on the circuit that awaits measuring and inhale the ring, sets up magnetism on distributed optical fiber sensor and inhale the knot, can let both inhale the back and hug closely together, and the effectual distributed optical fiber sensor that makes detects more accurately.
Preferably, the intelligent temperature measuring device further comprises a plurality of optical fiber thermometers, the optical fiber thermometers are uniformly arranged in the tunnel and connected with the processor, the optical fiber thermometers are used for detecting temperature data in the tunnel, and the processor controls the alarm device to be turned on or off according to the temperature information and the temperature data.
Through adopting above-mentioned technical scheme, the temperature data in the fiber thermometer measurement tunnel, the temperature information and the temperature data of treater contrast, the people sets for a difference scope, if the temperature difference between them exceeds this scope, then control alarm device opens, sends the alarm, the effectual temperature abnormality who reminds the staff in the tunnel.
Preferably, the processor is connected with a display, and the display is used for displaying temperature information and temperature data.
By adopting the technical scheme, the display is used for displaying temperature data and temperature information, so that the temperature condition in the tunnel can be effectively observed by staff.
In summary, the utility model has the following beneficial technical effects:
1. installing distributed optical fiber sensors near various lines in a tunnel, monitoring the temperature of the lines in real time, wherein the distributed optical fiber sensors acquire temperature spectrums, temperature information is acquired through the action of a temperature demodulation host computer, and a processor controls the on-off of alarm equipment according to the temperature information, so that the purposes of detecting the temperature of a power line, paying attention to the ignition of the line and effectively reducing the possibility of the ignition are effectively achieved;
2. the line to be tested is bound by the wire buckle, after tightening, the binding is firm and not easy to loosen, the magnetic attraction ring is arranged on the line to be tested, and the magnetic attraction buckle is arranged on the distributed optical fiber sensor, so that the line to be tested and the line to be tested are attached together after being attracted, and the distributed optical fiber sensor can detect more accurately;
3. the display is used for displaying temperature data and temperature information, so that a worker can effectively observe the temperature condition in the tunnel.
Drawings
FIG. 1 is a diagram showing the connection structure of electrical components of a fire early warning system based on distributed optical fiber sensing.
Fig. 2 is an installation diagram of a fire early warning system based on distributed optical fiber sensing in a tunnel according to the present utility model.
FIG. 3 is a circuit layout diagram of a fire alarm system based on distributed optical fiber sensing in a hole position with a recessed tunnel.
FIG. 4 is a position diagram of a magnetic attraction ring and a magnetic attraction buckle of the fire early warning system based on distributed optical fiber sensing.
Reference numerals illustrate: 1. a distributed optical fiber sensor; 2. a line to be tested; 3. a temperature demodulation host; 4. a processor; 5. an alarm device; 6. a magnetic ring; 7. magnetic attraction buckles; 8. an optical fiber thermometer; 9. a display.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
The embodiment of the utility model discloses a fire disaster early warning system based on distributed optical fiber sensing. Referring to fig. 1, the fire early warning system includes a distributed optical fiber sensor 1, a line to be measured 2, a temperature demodulation host 3, an optical fiber thermometer 8, and a processor 4.
The line 2 to be tested is a power line in the tunnel and a line connected with various detection devices.
The distributed optical fiber sensor 1 is distributed along a line 2 to be measured and is connected with the temperature demodulation host 3, the distributed optical fiber sensor 1 is used for acquiring a temperature spectrum and transmitting the temperature spectrum to the temperature demodulation host 3, the temperature demodulation host 3 is used for demodulating the temperature spectrum transmitted by the distributed optical fiber sensor 1 to obtain temperature information, the temperature demodulation host 3 is connected with the processor 4, the processor 4 is connected with the alarm device 5, and the processor 4 controls the on-off of the alarm device 5 according to the temperature information.
The temperature demodulation host 3 in the system adopts a distributed optical fiber temperature demodulator with the model SACK-9120, the processor 4 and the distributed optical fiber sensor 1 are both in the prior art, the processor 4 can be realized by adopting any processor 4 with a judging and controlling function, and the model adopted by the processor 4 in the system is AMDCPU.
The distributed optical fiber sensor 1 is installed near various lines 2 to be detected in the tunnel, the temperature on the lines 2 to be detected is monitored in real time, the distributed optical fiber sensor 1 obtains a temperature spectrum, temperature information is obtained through the action of the temperature demodulation host computer 3, and the processor 4 controls the on-off of the alarm equipment according to the temperature information.
A range value of the temperature is manually set, when the temperature information exceeds the range value, the hidden danger of fire disaster is indicated, the alarm device 5 is controlled to be started, and workers are reminded to check the line in the tunnel. The alarm device 5 may employ an audible and visual alarm, which is an existing device. The mode effectively achieves the purposes of detecting the temperature of the power supply circuit and paying attention to the ignition of the circuit, and effectively reduces the possibility of the ignition.
Referring to fig. 2, a plurality of optical fiber thermometers 8 are provided, the plurality of optical fiber thermometers 8 are uniformly installed in the tunnel, and the optical fiber thermometers 8 are connected with the processor 4. The optical fiber thermometer 8 is in the prior art, can directly convert a detection signal into temperature data and output the temperature data through a matched RS485 interface, adopts a standard MODBUS protocol as a communication protocol, and adopts a NORTEK FS fluorescent optical fiber temperature measuring system.
The optical fiber thermometer 8 measures the temperature data in the tunnel, the processor 4 compares the temperature information with the temperature data, a difference range is set manually, and if the temperature difference between the temperature information and the temperature data exceeds the range, the fire hidden danger exists in the line 2 to be measured or the tunnel. A range value, temperature information and a difference value between the temperature data and the temperature data are set for the temperature data, and if the temperature data and the difference value are not in the range value, the hidden danger of fire disaster is possible, the alarm device 5 is controlled to be started, an alarm is sent, and the temperature abnormality in a tunnel of a worker is effectively reminded.
The processor 4 is connected with a display 9, and the display 9 is used for displaying temperature data and temperature information, so that a worker can effectively observe the temperature condition in the tunnel. The display 9 may be a large display screen or a mobile terminal.
Referring to fig. 3 and 4, the line 2 to be measured is bound by a wire buckle, and the distributed optical fiber sensor 1 is bound and fixed on one side of the line 2 to be measured by a flexible bandage. The distributed optical fiber sensor 1 is not bundled with the line 2 to be tested, and because of the characteristics of the distributed optical fiber sensor 1, such as fineness, weakness, tensile resistance and non-folding resistance, the line buckle is a brace made of plastic for bundling the line at ordinary times, and after the line is bundled, the line buckle is tensioned, so that the line is effectively bundled more firmly, and the line can be slightly tightened to avoid loosening. The distributed optical fiber sensor 1 and the line 2 to be measured are not bundled together, and the distributed optical fiber sensor 1 is prevented from being tensioned and broken when the bundled line 2 to be measured is tensioned.
The circuit 2 to be tested is provided with a magnetic attraction ring 6, and the distributed optical fiber sensor 1 is provided with a magnetic attraction buckle 7 corresponding to the magnetic attraction ring 6. The design can enable the two to be closely attached after being attracted, so that the distributed optical fiber sensor 1 can be more accurately detected. After any one of the two is fixed and loosened on the tunnel, the distributed optical fiber sensor 1 or the line 2 to be tested can be pulled by the other under the action of the magnetic attraction ring 6 and the magnetic attraction buckle 7, so that the running and the coming of vehicles are not influenced.
The implementation principle of the fire early warning system based on distributed optical fiber sensing provided by the embodiment of the utility model is as follows: the distributed optical fiber sensor 1 is used for detecting temperature information near the line 2 to be detected, the optical fiber thermometer 8 is used for detecting temperature data in the tunnel, the processor 4 is used for comparing the temperature information and the temperature data with a range value set by people, and when the temperature information and the temperature data exceed the range value, the processor 4 controls the alarm device 5 to be started to remind workers of checking in the tunnel.
The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.
Claims (4)
1. A fire disaster early warning system based on distributed optical fiber sensing is characterized in that: the device comprises a distributed optical fiber sensor (1), a line to be tested (2), a temperature demodulation host (3) and a processor (4);
the distributed optical fiber sensor (1) is distributed along a line (2) to be detected and is connected with the temperature demodulation host (3), the distributed optical fiber sensor (1) is used for acquiring a temperature spectrum and transmitting the temperature spectrum to the temperature demodulation host (3), the temperature demodulation host (3) is used for demodulating the temperature spectrum transmitted by the distributed optical fiber sensor (1) to obtain temperature information, the temperature demodulation host (3) is connected with the processor (4), the processor (4) is connected with the alarm device (5), and the processor (4) controls the on-off of the alarm device (5) according to the temperature information;
the distributed optical fiber sensor (1) is not bundled with the circuit (2) to be tested, and the distributed optical fiber sensor (1) is bundled and fixed on one side of the circuit (2) to be tested by adopting a flexible bandage.
2. The fire early warning system based on distributed optical fiber sensing according to claim 1, wherein: the optical fiber sensor is characterized in that the line (2) to be measured is bound by a line buckle, a magnetic suction ring (6) is arranged on the line (2) to be measured, and a magnetic suction buckle (7) corresponding to the magnetic suction ring (6) is arranged on the distributed optical fiber sensor (1).
3. The fire early warning system based on distributed optical fiber sensing according to claim 1, wherein: the intelligent temperature measuring device is characterized by further comprising optical fiber thermometers (8), wherein the optical fiber thermometers (8) are arranged in a plurality of ways, the optical fiber thermometers (8) are uniformly arranged in the tunnels, the optical fiber thermometers (8) are connected with the processor (4), the optical fiber thermometers (8) are used for detecting temperature data in the tunnels, and the processor (4) controls the opening and closing of the alarm device (5) according to the temperature information and the temperature data.
4. A distributed optical fiber sensing based fire early warning system according to claim 3, wherein: the processor (4) is connected with a display (9), and the display (9) is used for displaying temperature information and temperature data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322361508.1U CN220709748U (en) | 2023-08-31 | 2023-08-31 | Fire disaster early warning system based on distributed optical fiber sensing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322361508.1U CN220709748U (en) | 2023-08-31 | 2023-08-31 | Fire disaster early warning system based on distributed optical fiber sensing |
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| Publication Number | Publication Date |
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| CN220709748U true CN220709748U (en) | 2024-04-02 |
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| CN202322361508.1U Active CN220709748U (en) | 2023-08-31 | 2023-08-31 | Fire disaster early warning system based on distributed optical fiber sensing |
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| CN (1) | CN220709748U (en) |
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2023
- 2023-08-31 CN CN202322361508.1U patent/CN220709748U/en active Active
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