CN113393635A - Fire early warning detection system based on temperature sensing optical fiber - Google Patents
Fire early warning detection system based on temperature sensing optical fiber Download PDFInfo
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- CN113393635A CN113393635A CN202110640640.9A CN202110640640A CN113393635A CN 113393635 A CN113393635 A CN 113393635A CN 202110640640 A CN202110640640 A CN 202110640640A CN 113393635 A CN113393635 A CN 113393635A
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
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- G01K1/024—Means for indicating or recording specially adapted for thermometers for remote indication
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
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Abstract
The invention relates to a fire early warning detection system based on temperature sensing optical fibers, which comprises: the temperature sensing optical fiber module is used for detecting the temperature of a certain heating point in a fire early warning area; the temperature module is used for detecting the temperature of the temperature sensing optical fiber in the analysis area; the smoke sensing module is used for detecting the smoke amount in a fire early warning area; the automatic fire-fighting module is used for triggering fire-fighting settings which are installed in advance to carry out automatic fire-fighting treatment; the alarm module is used for carrying out automatic fire alarm under the condition that the automatic fire-fighting module cannot complete fire-fighting treatment; the display module is used for displaying heating detection points at different positions; the central control module is used for controlling the operation process of the fire early warning detection system; therefore, the temperature of the heating detection point can be accurately determined through the laying distance of the temperature sensing optical fiber and the temperature of the safe area, and then the fire early warning measure and the fire level are determined, so that the fire fighter can prepare enough fire fighting equipment and enough police officers in advance, and the safety is improved.
Description
Technical Field
The invention relates to the technical field of fire safety, in particular to a fire early warning detection system based on temperature sensing optical fibers.
Background
In recent years, the construction of urban underground infrastructure in China is rapidly developed, and the development of underground space is diversified, deep and complicated; the tunnel has the development trend of from small scale to large scale, from simple structure to complex structure and from single function to comprehensive function. The tunnel has various disaster-causing factors, the fire disaster is one of the most common and serious disasters in the tunnel disasters, once the fire disaster occurs, due to the particularity of the underground tunnel structure, the disaster situation is difficult to be effectively controlled, secondary disasters are easy to cause, and serious casualties and property loss are caused. The temperature is the most direct factor for reflecting whether a fire disaster happens, the distributed optical fiber temperature measurement system can continuously collect temperature information at high density and at high frequency, but in the actual process, the temperature information is influenced by a tunnel space structure, and the distributed optical fiber temperature measurement system can only reflect the temperature along the optical fiber, so that the fire point cannot be accurately positioned.
At present, some fire early warning detection systems based on temperature sensing optical fibers exist, but generally, the temperature of a heating detection point cannot be accurately determined through the laying distance of the temperature sensing optical fibers and the temperature of a safe region, fire early warning measures and fire levels cannot be determined through the smoke amount, so that fire fighters cannot prepare enough fire fighting equipment and police officers in advance, and further the fire treatment speed is low.
Disclosure of Invention
Therefore, the fire early warning detection system based on the temperature sensing optical fiber can effectively solve the technical problem that the temperature of a heating detection point cannot be accurately determined through the laying distance of the temperature sensing optical fiber and the temperature of a safe area in the prior art so as to improve the safety of a fire early warning area.
In order to achieve the above object, the present invention provides a fire early warning detection system based on a temperature-sensitive optical fiber, comprising:
the temperature sensing optical fiber module is used for detecting the temperature of a certain heating point in a fire early warning area;
the temperature module and the temperature sensing optical fiber module are used for detecting the temperature of the temperature sensing optical fiber of the analysis area so as to obtain a peripheral analysis temperature H;
the smoke sensing module is connected with the temperature module and used for detecting the smoke volume of the fire early warning area to obtain the actual smoke volume R;
the automatic fire-fighting module is connected with the smoke sensing module and used for triggering fire-fighting settings which are installed in advance to carry out automatic fire-fighting treatment;
the alarm module is connected with the automatic fire fighting module and is used for carrying out automatic fire alarm under the condition that the automatic fire fighting module cannot complete fire fighting treatment;
the display module is connected with the temperature sensing optical fiber module and is used for displaying heating detection points at different positions;
the central control module is connected with the temperature sensing optical fiber module, the temperature module, the smoke sensing module, the automatic fire fighting module, the alarm module and the display module and is used for controlling the operation process of the fire early warning detection system;
when the fire early warning detection system works, the central control module compares the temperature A of the heating detection point with the temperature of a preset heating detection point to determine whether fire early warning measures need to be taken or not, compares the temperature difference value delta A with the standard temperature difference value delta A0 to further determine whether fire early warning measures need to be taken or not, compares the actual smoke quantity R with the preset smoke quantity R0 to determine the fire early warning measures when the fire early warning measures need to be taken, compares the smoke quantity difference value delta R with the preset smoke quantity difference value to determine the fire level, and automatically alarms and informs the predicted fire level according to the determined fire level;
the heating detection point temperature A is obtained through a preset formula of peripheral analysis temperature H, actual distance L and temperature calculation parameter prediction.
Further, when the fire early warning detection system operates, the central control module sets the temperature of a temperature change detection point, which is detected by the temperature sensing optical fiber module and is laid with the temperature sensing optical fiber to perform a fire early warning region, as a heating detection point temperature a, when the setting is completed, the central control module compares the heating detection point temperature a with a preset heating detection point temperature to determine whether fire early warning measures need to be taken, and when the central control module determines that the fire early warning measures do not need to be taken, the temperature sensing optical fiber module continues to detect the temperature of the fire early warning region;
the central control module is provided with preset heating detection point temperatures, wherein the preset heating detection point temperatures comprise a first preset heating detection point temperature A1 and a second preset heating detection point temperature A2, and A1 is smaller than A2;
if A is less than A1, the central control module judges that fire early warning measures are not needed;
if A is not less than A1 and not more than A2, the central control module judges whether fire early warning measures need to be taken or not according to the temperature difference;
and if A is more than A2, the central control module judges that fire early warning measures need to be acquired.
Further, when the central control module determines that whether fire early warning measures need to be taken or not by combining the temperature difference value, the central control module calculates a temperature difference value delta A, when the calculation is completed, the central control module compares the temperature difference value delta A with a standard temperature difference value delta A0 to determine whether fire early warning measures need to be taken or not, and when the central control module determines that the fire early warning measures do not need to be taken, the temperature sensing optical fiber module continues to detect the temperature of a fire early warning area;
if the delta A is less than the delta A0, the central control module judges that fire early warning measures are not needed;
and if the delta A is not less than or equal to the delta A0, the central control module judges that fire early warning measures need to be acquired.
Wherein, the standard temperature difference delta A0 is set through the central control module.
Further, when the central control module determines whether fire early warning measures need to be taken or not by combining the temperature difference, the central control module calculates the temperature difference delta A in the following calculation mode:
△A＝(A2-A1)×[(A2-A)/(A-A1)]；
in the formula, a represents the temperature of a temperature conversion detection point where the temperature sensing optical fiber module is laid to perform a fire early warning region, Ai represents the ith preset heating detection point temperature, and i is set to 1 or 2.
Further, when the central control module judges that fire early warning measures need to be acquired, the central control module acquires the smoke volume of a fire early warning area detected by the smoke sensing module and sets the smoke volume as an actual smoke volume R, and when the setting is finished, the central control module compares the actual smoke volume R with a preset smoke volume R0 to determine the fire early warning measures;
if R is less than R0, the central control module starts the automatic fire-fighting module;
and if R is larger than or equal to R0, the central control module starts the automatic fire-fighting module and the alarm module at the same time.
Wherein, the preset smoke amount R0 is set through a central control module.
Further, when the alarm module is started by the central control module, the central control module calculates a smoke quantity difference value delta R, and when the calculation is completed, the central control module compares the smoke quantity difference value delta R with a preset smoke quantity difference value to determine the fire level;
the central control module is further provided with a preset smoke quantity difference value and a fire level, the preset smoke quantity comprises a first preset smoke quantity difference value delta R1, a second preset smoke quantity difference value delta R2 and a third preset smoke quantity difference value delta R3, and delta R1 is smaller than delta R2 and smaller than delta R3; the fire levels comprise a first fire level S1, a second fire level S2, a third fire level S3 and a fourth fire level S4, wherein the fires of different levels correspond to different police officers, and S1 to S4 are sequentially increased;
if DeltaR < DeltaR 1, the central control module judges the fire level to be S1;
if the delta R is not more than delta R1 and is less than delta R2, the central control module judges that the fire level is S2;
if the delta R is not more than delta R2 and is less than delta R3, the central control module judges that the fire level is S3;
and if the delta R is not less than or equal to the delta R3, the central control module judges the fire level to be S4.
Further, when the central control module determines that the fire level is Si, setting i to 1,2,3 and 4, and the alarm module automatically alarms and informs the predicted fire level according to the determined fire level.
Further, when the central control module starts the alarm module, the central control module calculates a smoke volume difference value Δ R, and the calculation formula is as follows:
△R＝(R-R0)×(R/R0)；
in the formula, R represents the smoke amount of a fire early warning area detected by the smoke sensing module, and R0 represents the preset smoke amount.
Further, when the fire early warning detection system operates, the central control module obtains the temperature detected by the temperature module and sets the temperature as a peripheral analysis temperature H, when the setting is completed, the central control module analyzes and displays the position of the heating detection point by the display module to obtain the length of the heating detection point from the temperature sensing optical fiber of the temperature module and sets the length as an actual distance L, and when the setting is completed, the central control module compares the actual distance L with a preset distance to determine a temperature calculation parameter;
the central control module is further provided with preset distances and temperature calculation parameters, wherein the preset distances comprise a first preset distance L1, a second preset distance L2 and a third preset distance L3, and L1 is larger than L2 and smaller than L3; the temperature calculation parameters comprise a first temperature calculation parameter sigma 1, a second temperature calculation parameter sigma 2, a third temperature calculation parameter sigma 3 and a fourth temperature calculation parameter sigma 4, wherein sigma 1 < sigma 2 < sigma 3 < sigma 4 and sigma 1+ sigma 2+ sigma 3+ sigma 4 is 2;
if L is less than L1, the central control module determines that the temperature calculation parameter is sigma 1;
if L1 is not less than L < L2, the central control module determines that the temperature calculation parameter is sigma 2;
if L2 is not less than L < L3, the central control module determines that the temperature calculation parameter is sigma 3;
and if L is larger than or equal to L3, the central control module determines that the temperature calculation parameter is sigma 4.
Further, when the central control module determines that the temperature calculation parameter is σ i, the central control module calculates a temperature difference Δ H, sets Δ H to lxσ i, sets i to 1,2,3,4, and when the temperature difference calculation is completed, the central control module determines a heating detection point temperature a, sets a to Δ H + H, where H represents the temperature detected by the temperature module.
Compared with the prior art, the fire early warning and detecting system has the advantages that by arranging the temperature sensing optical fiber module, the smoke sensing module and the central control module, when the fire early warning detection system works, the temperature of the heating detection point is compared with the temperature of the preset heating detection point to determine whether fire early warning measures need to be taken or not, the temperature difference value is compared with a standard temperature difference value to further determine whether fire early warning measures need to be taken or not, when the fire early warning measures need to be taken, the actual smoke amount is compared with the preset smoke amount to determine the fire early warning measures, the smoke amount difference value is compared with the preset smoke amount difference value to determine the fire level, the alarm module automatically alarms and informs the predicted fire level according to the determined fire level, the temperature of the heating detection point is obtained by a preset formula for predicting peripheral analysis temperature, actual distance and temperature calculation parameters. Therefore, the temperature of the heating detection point can be accurately determined through the laying distance of the temperature sensing optical fiber and the temperature of the safe region, and then the fire early warning measure and the fire level can be determined according to the smoke amount, so that the fire protection device is beneficial to preparing enough fire protection equipment and enough police officers in advance, the fire can be rapidly handled, and the safety is improved.
Particularly, the temperature sensing optical fiber module controls a plurality of temperature sensing optical fibers, and compared with other temperature measuring equipment, the temperature sensing optical fibers have the advantages of high reaction speed and long detection distance.
Further, the temperature A of the heating detection point is compared with the temperature of a preset heating detection point to determine whether fire early warning measures need to be taken or not, the temperature difference value delta A is compared with a standard temperature difference value delta A0 to further determine whether fire early warning measures need to be taken or not, when the fire early warning measures need to be taken, the actual smoke quantity R is compared with a preset smoke quantity R0 to determine the fire early warning measures, the smoke quantity difference value delta R is compared with a preset smoke quantity difference value to determine the fire level, and an alarm module automatically alarms and informs of the predicted fire level according to the determined fire level; the heating detection point temperature A is obtained through a preset formula of peripheral analysis temperature H, actual distance L and temperature calculation parameter prediction. Therefore, the temperature of the heating detection point can be accurately determined through the laying distance of the temperature sensing optical fiber and the temperature of the safe region, and then the fire early warning measure and the fire level can be determined according to the smoke amount, so that the fire protection device is beneficial to preparing enough fire protection equipment and enough police officers in advance, the fire can be rapidly handled, and the safety is improved.
Furthermore, the temperature A of the heating detection point is compared with the temperature of the preset heating detection point to determine whether fire early warning measures need to be taken or not, so that the temperature of the heating detection point can be accurately determined according to the laying distance of the temperature sensing optical fiber and the temperature of the safety region, further the fire early warning measures and the fire level can be determined according to the smoke amount, the fire early warning device is beneficial to preparing enough fire equipment and enough police exit personnel in advance for the fire fighter, further the fire can be quickly handled, and the safety is improved.
Furthermore, the temperature difference delta A is compared with the standard temperature difference delta A0 to determine whether fire early warning measures need to be taken or not, so that the temperature of a heating detection point can be accurately determined according to the laying distance of the temperature sensing optical fiber and the temperature of a safety region, further the fire early warning measures and the fire level can be determined according to the smoke amount, the fire fighting equipment and the fire alarm staff can be prepared in advance, further the fire can be handled quickly, and the safety is improved.
Furthermore, the actual smoke amount R is compared with the preset smoke amount R0 to determine the fire early warning measure, so that the temperature of the heating detection point can be accurately determined according to the laying distance of the temperature sensing optical fiber and the temperature of the safety region, the fire early warning measure and the fire level can be determined according to the smoke amount, the fire fighters can prepare enough fire fighting equipment and enough police officers in advance, the fire can be quickly handled, and the safety is improved.
Furthermore, the smoke quantity difference value delta R is compared with the preset smoke quantity difference value to determine the fire level, so that the temperature of the heating detection point can be accurately determined according to the laying distance of the temperature sensing optical fiber and the temperature of the safety region, and further, the fire early warning measure and the fire level can be determined according to the smoke quantity, so that the fire fighter can prepare enough fire fighting equipment and enough police officers in advance, further, the fire can be quickly handled, and the safety is improved.
Furthermore, the actual distance L is compared with the preset distance to determine the temperature calculation parameter, the temperature difference quantity delta H is determined through a preset formula, and then the temperature A of the heating detection point is determined, the temperature calculation parameter aims to provide calculation accuracy, so that the temperature of the heating detection point can be accurately determined through the laying distance of the temperature sensing optical fiber and the temperature of a safety area, further fire early warning measures and fire levels are determined according to the smoke amount, and therefore fire fighters can prepare enough fire fighting equipment and enough police officers in advance, further fire disasters can be quickly handled, and safety is improved.
Drawings
FIG. 1 is a schematic structural diagram of a fire warning detection system based on a temperature-sensitive optical fiber according to an embodiment of the present invention;
the notation in the figure is: 1. a temperature sensing optical fiber module; 2. a temperature module; 3. a flue gas sensing module; 4. an automatic fire-fighting module; 5. an alarm module; 6. a display module; 61. an indicating unit; 62. a display screen; 7. a central control module; 71. an analysis unit; 72. and a transmission unit.
Detailed Description
In order that the objects and advantages of the invention will be more clearly understood, the invention is further described below with reference to examples; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and do not limit the scope of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1, which is a schematic structural diagram of a fire early warning and detecting system based on a temperature-sensing optical fiber according to an embodiment of the present invention, the present invention provides a fire early warning and detecting system based on a temperature-sensing optical fiber, including:
the temperature sensing optical fiber module 1 is used for detecting the temperature of a certain heating point in a fire early warning area;
the temperature module 2 is connected with the temperature sensing optical fiber module 1 and is used for detecting the temperature of the temperature sensing optical fiber of the analysis area so as to obtain a peripheral analysis temperature H;
the smoke sensing module 3 is connected with the temperature module 2 and used for detecting the smoke volume of the fire early warning area to obtain the actual smoke volume R;
the automatic fire-fighting module 4 is connected with the smoke sensing module 3 and used for triggering fire-fighting settings which are installed in advance to carry out automatic fire-fighting treatment;
the alarm module 5 is connected with the automatic fire-fighting module 4 and is used for automatically alarming fire when the automatic fire-fighting module 4 cannot complete fire-fighting treatment;
the display module 6 is connected with the temperature sensing optical fiber module 1 and used for displaying heating detection points at different positions;
the central control module 7 is connected with the temperature sensing optical fiber module 1, the temperature module 2, the smoke sensing module 3, the automatic fire fighting module 4, the alarm module 5 and the display module 6 and is used for controlling the operation process of the fire early warning detection system;
in this embodiment, the analysis area is a fire early warning detection control room, is independent of a fire early warning area, and is a safe area.
The display module 6 is provided with an indicating unit 61 and a display screen 62, the indicating unit 61 is connected with the display screen 62, and the indicating unit 61 indicates the color change of the positioning point on the display screen 62 when the temperature of a certain heating detection point is abnormal.
The central control module 7 is provided with an analysis unit 71 and a transmission unit 72, the analysis unit 71 is connected with the transmission unit 72, the analysis unit 71 is used for analyzing the fire early warning information, and the transmission unit 72 is used for transmitting the message and the indication analyzed by the analysis unit 71.
When the fire early warning detection system works, the central control module 7 compares the temperature A of the heating detection point with the temperature of a preset heating detection point to determine whether fire early warning measures need to be taken or not, compares the temperature difference value delta A with the standard temperature difference value delta A0 to further determine whether fire early warning measures need to be taken or not, compares the actual smoke quantity R with the preset smoke quantity R0 to determine fire early warning measures when the fire early warning measures need to be taken, compares the smoke quantity difference value delta R with the preset smoke quantity difference value to determine the fire level, and automatically alarms and informs the predicted fire level according to the determined fire level by the alarm module 5;
the heating detection point temperature A is obtained through a preset formula of peripheral analysis temperature H, actual distance L and temperature calculation parameter prediction.
In this embodiment, the preset temperature of the heating detection point needs to be set in combination with the temperature of the environment itself, and thus is different according to different times. A PLC control panel is arranged in the central control module 7.
Specifically, the temperature A of a heating detection point is compared with the temperature of a preset heating detection point to determine whether fire early warning measures need to be taken or not, the temperature difference value delta A is compared with a standard temperature difference value delta A0 to further determine whether fire early warning measures need to be taken or not, when the fire early warning measures need to be taken, the actual smoke amount R is compared with the preset smoke amount R0 to determine the fire early warning measures, the smoke amount difference value delta R is compared with the preset smoke amount difference value to determine the fire level, and an alarm module 5 automatically alarms and informs the predicted fire level according to the determined fire level; the heating detection point temperature A is obtained through a preset formula of peripheral analysis temperature H, actual distance L and temperature calculation parameter prediction. Therefore, the temperature of the heating detection point can be accurately determined through the laying distance of the temperature sensing optical fiber and the temperature of the safe region, and then the fire early warning measure and the fire level can be determined according to the smoke amount, so that the fire protection device is beneficial to preparing enough fire protection equipment and enough police officers in advance, the fire can be rapidly handled, and the safety is improved.
Specifically, when the fire early warning detection system operates, the central control module 7 sets the temperature of a temperature conversion detection point, which is detected by the temperature sensing optical fiber module 1 and is laid with a temperature sensing optical fiber to perform a fire early warning region, as a heating detection point temperature a, when the setting is completed, the central control module 7 compares the heating detection point temperature a with a preset heating detection point temperature to determine whether a fire early warning measure needs to be taken, and when the central control module 7 determines that the fire early warning measure does not need to be taken, the temperature sensing optical fiber module 1 continues to detect the temperature of the fire early warning region;
the central control module 7 is provided with preset heating detection point temperatures including a first preset heating detection point temperature A1 and a second preset heating detection point temperature A2, wherein A1 is less than A2;
if A is less than A1, the central control module 7 judges that fire early warning measures are not needed;
if A is not less than A1 and not more than A2, the central control module 7 judges whether fire early warning measures need to be taken or not by combining the temperature difference;
if A is larger than A2, the central control module 7 judges that fire early warning measures need to be collected.
Specifically, the temperature A of the heating detection point is compared with the temperature of the preset heating detection point to determine whether fire early warning measures need to be taken or not, so that the temperature of the heating detection point can be accurately determined according to the laying distance of the temperature sensing optical fiber and the temperature of the safety region, further the fire early warning measures and the fire level can be determined according to the smoke amount, the fire early warning method and the fire early warning device are beneficial for firefighters to prepare enough fire equipment and enough police officers in advance, further the fire can be quickly handled, and the safety is improved.
Specifically, when the central control module 7 determines whether fire early warning measures need to be taken or not by combining the temperature difference, the central control module 7 calculates the temperature difference Δ a, when the calculation is completed, the central control module 7 compares the temperature difference Δ a with the standard temperature difference Δ a0 to determine whether fire early warning measures need to be taken or not, and when the central control module 7 determines that fire early warning measures do not need to be taken, the temperature sensing optical fiber module 1 continues to detect the temperature of a fire early warning area;
if the delta A is less than the delta A0, the central control module 7 judges that fire early warning measures are not needed;
and if the delta A is not less than or equal to the delta A0, the central control module 7 judges that fire early warning measures need to be acquired.
Wherein, the standard temperature difference Delta A0 is set through the central control module 7.
Specifically, the temperature difference value delta A is compared with the standard temperature difference value delta A0 to determine whether fire early warning measures need to be taken or not, so that the temperature of a heating detection point can be accurately determined according to the laying distance of the temperature sensing optical fiber and the temperature of a safety region, further the fire early warning measures and the fire level can be determined according to the smoke amount, the fire early warning method is beneficial for firefighters to prepare enough fire fighting equipment and enough police officers in advance, further the fire can be quickly handled, and the safety is improved.
Specifically, when the central control module 7 determines whether fire early warning measures need to be taken or not by combining the temperature difference, the central control module 7 calculates the temperature difference Δ a in the following calculation manner:
△A＝(A2-A1)×[(A2-A)/(A-A1)]；
in the formula, a represents the temperature of a temperature conversion detection point where the temperature sensing optical fiber module 1 detects laying of the temperature sensing optical fiber to perform a fire early warning region, Ai represents the ith preset heating detection point temperature, and i is set to 1 or 2.
Specifically, when the central control module 7 determines that fire early warning measures need to be acquired, the central control module 7 acquires the smoke volume of the fire early warning area detected by the smoke sensing module 3 and sets the smoke volume as an actual smoke volume R, and when the setting is completed, the central control module 7 compares the actual smoke volume R with a preset smoke volume R0 to determine the fire early warning measures;
if R is less than R0, the central control module 7 starts the automatic fire-fighting module 4;
if R is larger than or equal to R0, the central control module 7 starts the automatic fire-fighting module 4 and the alarm module 5 at the same time.
Wherein, the preset smoke amount R0 is set through the central control module 7.
In this embodiment, the automatic fire fighting module 4 is a fire fighting device installed in a fire early warning area in advance, and when the central control module 7 starts the automatic fire fighting module 4, the fire fighting device starts measures such as cooling and extinguishing of an area where a fire may occur.
Specifically, the actual smoke amount R is compared with the preset smoke amount R0 to determine the fire early warning measure, so that the temperature of the heating detection point can be accurately determined according to the laying distance of the temperature sensing optical fiber and the temperature of the safety region, the fire early warning measure and the fire level can be determined according to the smoke amount, the fire early warning measure and the fire level can be conveniently prepared by fire fighters in advance, the fire can be quickly handled, and the safety is improved.
Specifically, when the central control module 7 starts the alarm module 5, the central control module 7 calculates a smoke volume difference value Δ R, and when the calculation is completed, the central control module 7 compares the smoke volume difference value Δ R with a preset smoke volume difference value to determine the fire level;
the central control module 7 is further provided with a preset smoke quantity difference value and a fire level, wherein the preset smoke quantity comprises a first preset smoke quantity difference value delta R1, a second preset smoke quantity difference value delta R2 and a third preset smoke quantity difference value delta R3, and delta R1 is smaller than delta R2 and smaller than delta R3; the fire levels comprise a first fire level S1, a second fire level S2, a third fire level S3 and a fourth fire level S4, wherein the fires of different levels correspond to different police officers, and S1 to S4 are sequentially increased;
if DeltaR is less than DeltaR 1, the central control module 7 judges that the fire level is S1;
if the delta R is not less than delta R1 and less than delta R2, the central control module 7 judges that the fire level is S2;
if the delta R is not less than delta R2 and less than delta R3, the central control module 7 judges that the fire level is S3;
if the delta R is not less than the delta R3, the central control module 7 judges that the fire level is S4.
Specifically, the smoke quantity difference value delta R is compared with the preset smoke quantity difference value to determine the fire level, so that the temperature of the heating detection point can be accurately determined according to the laying distance of the temperature sensing optical fiber and the temperature of the safety region, and further, the fire early warning measure and the fire level can be determined according to the smoke quantity, so that the fire fighter can prepare enough fire fighting equipment and enough police officers in advance, further, the fire can be quickly handled, and the safety is improved.
Specifically, when the central control module 7 determines that the fire level is Si, i is set to 1,2,3,4, and the alarm module 5 automatically alarms according to the determined fire level and informs the predicted fire level.
In this embodiment, forecast fire level in advance, be favorable to the fire fighter to prepare sufficient fire fighting equipment and sufficient personnel of giving police in advance, and then can handle the conflagration fast, improved the security.
Specifically, when the central control module 7 starts the alarm module 5, the central control module 7 calculates a smoke volume difference Δ R, and a calculation formula thereof is as follows:
△R＝(R-R0)×(R/R0)；
in the formula, R represents the smoke amount of the fire early warning area detected by the smoke sensing module 3, and R0 represents the preset smoke amount.
Specifically, when the fire early warning detection system operates, the central control module 7 obtains the temperature detected by the temperature module 2 and sets the temperature as a peripheral analysis temperature H, when the setting is completed, the central control module 7 analyzes the position of the heating detection point displayed by the display module 6 to obtain the length of the heating detection point from the temperature sensing optical fiber of the temperature module 2 and sets the length as an actual distance L, and when the setting is completed, the central control module 7 compares the actual distance L with a preset distance to determine a temperature calculation parameter;
the central control module 7 is further provided with preset distance and temperature calculation parameters, wherein the preset distances include a first preset distance L1, a second preset distance L2 and a third preset distance L3, wherein L1 is greater than L2 and L3; the temperature calculation parameters comprise a first temperature calculation parameter sigma 1, a second temperature calculation parameter sigma 2, a third temperature calculation parameter sigma 3 and a fourth temperature calculation parameter sigma 4, wherein sigma 1 < sigma 2 < sigma 3 < sigma 4 and sigma 1+ sigma 2+ sigma 3+ sigma 4 is 2;
if L is less than L1, the central control module 7 judges that the temperature calculation parameter is sigma 1;
if L1 is not less than L < L2, the central control module 7 judges that the temperature calculation parameter is sigma 2;
if L2 is not less than L < L3, the central control module 7 judges that the temperature calculation parameter is sigma 3;
and if L is larger than or equal to L3, the central control module 7 judges that the temperature calculation parameter is sigma 4.
Specifically, the actual distance L is compared with the preset distance to determine the temperature calculation parameter, the temperature difference delta H is determined through the preset formula, and then the temperature A of the heating detection point is determined, the temperature calculation parameter aims to provide calculation accuracy, so that the temperature of the heating detection point can be accurately determined through the laying distance of the temperature sensing optical fiber and the temperature of a safety area, and further a fire early warning measure and a fire level are determined according to the smoke amount, so that a fire fighter can prepare enough fire fighting equipment and enough police officers in advance, further the fire can be quickly handled, and the safety is improved.
Specifically, when the central control module 7 determines that the temperature calculation parameter is σ i, the central control module 7 calculates a temperature difference Δ H, where Δ H is set to L × σ i and i is set to 1,2,3, and 4, and when the temperature difference calculation is completed, the central control module 7 determines a heat generation detection point temperature a, where a is set to Δ H + H, where H represents the temperature detected by the temperature module 2.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (10)
1. The utility model provides a fire early warning detecting system based on temperature sensing optic fibre which characterized in that includes:
the temperature sensing optical fiber module is used for detecting the temperature of a certain heating point in a fire early warning area;
the temperature module and the temperature sensing optical fiber module are used for detecting the temperature of the temperature sensing optical fiber of the analysis area so as to obtain a peripheral analysis temperature H;
the smoke sensing module is connected with the temperature module and used for detecting the smoke volume of the fire early warning area to obtain the actual smoke volume R;
the automatic fire-fighting module is connected with the smoke sensing module and used for triggering fire-fighting settings which are installed in advance to carry out automatic fire-fighting treatment;
the alarm module is connected with the automatic fire fighting module and is used for carrying out automatic fire alarm under the condition that the automatic fire fighting module cannot complete fire fighting treatment;
the display module is connected with the temperature sensing optical fiber module and is used for displaying heating detection points at different positions;
the central control module is connected with the temperature sensing optical fiber module, the temperature module, the smoke sensing module, the automatic fire fighting module, the alarm module and the display module and is used for controlling the operation process of the fire early warning detection system;
when the fire early warning detection system works, the central control module compares the temperature A of the heating detection point with the temperature of a preset heating detection point to determine whether fire early warning measures need to be taken or not, compares the temperature difference value delta A with the standard temperature difference value delta A0 to further determine whether fire early warning measures need to be taken or not, compares the actual smoke quantity R with the preset smoke quantity R0 to determine the fire early warning measures when the fire early warning measures need to be taken, compares the smoke quantity difference value delta R with the preset smoke quantity difference value to determine the fire level, and automatically alarms and informs the predicted fire level according to the determined fire level;
the heating detection point temperature A is obtained through a preset formula of peripheral analysis temperature H, actual distance L and temperature calculation parameter prediction.
2. The fire early warning detection system based on the temperature sensing optical fiber according to claim 1, wherein when the fire early warning detection system is operated, the central control module sets the temperature of the temperature change detection point where the temperature sensing optical fiber is laid for fire early warning area detected by the temperature sensing optical fiber module as a heating detection point temperature a, when the setting is completed, the central control module compares the heating detection point temperature a with a preset heating detection point temperature to determine whether fire early warning measures need to be taken, and when the central control module determines that fire early warning measures do not need to be taken, the temperature sensing optical fiber module continues to detect the temperature of the fire early warning area;
the central control module is provided with preset heating detection point temperatures, wherein the preset heating detection point temperatures comprise a first preset heating detection point temperature A1 and a second preset heating detection point temperature A2, and A1 is smaller than A2;
if A is less than A1, the central control module judges that fire early warning measures are not needed;
if A is not less than A1 and not more than A2, the central control module judges whether fire early warning measures need to be taken or not according to the temperature difference;
and if A is more than A2, the central control module judges that fire early warning measures need to be acquired.
3. The fire early warning and detecting system based on the temperature sensing optical fiber according to claim 2, wherein the central control module calculates the temperature difference Δ a when determining whether fire early warning measures need to be taken in combination with the temperature difference, and when the calculation is completed, the central control module compares the temperature difference Δ a with a standard temperature difference Δ a0 to determine whether fire early warning measures need to be taken, and when determining that fire early warning measures do not need to be taken, the temperature sensing optical fiber module continues to detect the temperature of a fire early warning area;
if the delta A is less than the delta A0, the central control module judges that fire early warning measures are not needed;
and if the delta A is not less than or equal to the delta A0, the central control module judges that fire early warning measures need to be acquired.
Wherein, the standard temperature difference delta A0 is set through the central control module.
4. The fire early warning and detecting system based on the temperature sensing optical fiber according to claim 3, wherein when the central control module determines whether fire early warning measures need to be taken or not by combining the temperature difference, the central control module calculates the temperature difference Δ A in the following way:
△A＝(A2-A1)×[(A2-A)/(A-A1)]；
in the formula, a represents the temperature of a temperature conversion detection point where the temperature sensing optical fiber module is laid to perform a fire early warning region, Ai represents the ith preset heating detection point temperature, and i is set to 1 or 2.
5. The fire early warning detection system based on the temperature sensing optical fiber according to claim 3, wherein when the central control module determines that fire early warning measures need to be collected, the central control module obtains the smoke volume of a fire early warning area detected by the smoke sensing module and sets the smoke volume as an actual smoke volume R, and when the setting is completed, the central control module compares the actual smoke volume R with a preset smoke volume R0 to determine the fire early warning measures;
if R is less than R0, the central control module starts the automatic fire-fighting module;
and if R is larger than or equal to R0, the central control module starts the automatic fire-fighting module and the alarm module at the same time.
Wherein, the preset smoke amount R0 is set through a central control module.
6. The fire early warning and detecting system based on the temperature sensing optical fiber according to claim 5, wherein when the alarm module is started, the central control module calculates a smoke volume difference value Δ R, and when the calculation is completed, the central control module compares the smoke volume difference value Δ R with a preset smoke volume difference value to determine the fire level;
the central control module is further provided with a preset smoke quantity difference value and a fire level, the preset smoke quantity comprises a first preset smoke quantity difference value delta R1, a second preset smoke quantity difference value delta R2 and a third preset smoke quantity difference value delta R3, and delta R1 is smaller than delta R2 and smaller than delta R3; the fire levels comprise a first fire level S1, a second fire level S2, a third fire level S3 and a fourth fire level S4, wherein the fires of different levels correspond to different police officers, and S1 to S4 are sequentially increased;
if DeltaR < DeltaR 1, the central control module judges the fire level to be S1;
if the delta R is not more than delta R1 and is less than delta R2, the central control module judges that the fire level is S2;
if the delta R is not more than delta R2 and is less than delta R3, the central control module judges that the fire level is S3;
and if the delta R is not less than or equal to the delta R3, the central control module judges the fire level to be S4.
7. The fire early warning and detecting system based on the temperature sensing optical fiber according to claim 6, wherein when the central control module determines that the fire level is Si, i is set to 1,2,3,4, and the alarm module automatically alarms and informs the predicted fire level according to the determined fire level.
8. The fire early warning and detecting system based on the temperature sensing optical fiber according to claim 6, wherein when the central control module starts the alarm module, the central control module calculates a smoke volume difference Δ R, and the calculation formula is as follows:
△R＝(R-R0)×(R/R0)；
in the formula, R represents the smoke amount of a fire early warning area detected by the smoke sensing module, and R0 represents the preset smoke amount.
9. The fire early warning and detecting system based on the temperature sensing optical fiber according to claim 1, wherein when the fire early warning and detecting system is in operation, the central control module obtains the temperature detected by the temperature module and sets the temperature as a peripheral analysis temperature H, when the setting is completed, the central control module analyzes and displays the position of the heating detection point to obtain the length of the heating detection point from the temperature sensing optical fiber of the temperature module and sets the length as an actual distance L, and when the setting is completed, the central control module compares the actual distance L with a preset distance to determine a temperature calculation parameter;
the central control module is further provided with preset distances and temperature calculation parameters, wherein the preset distances comprise a first preset distance L1, a second preset distance L2 and a third preset distance L3, and L1 is larger than L2 and smaller than L3; the temperature calculation parameters comprise a first temperature calculation parameter sigma 1, a second temperature calculation parameter sigma 2, a third temperature calculation parameter sigma 3 and a fourth temperature calculation parameter sigma 4, wherein sigma 1 < sigma 2 < sigma 3 < sigma 4 and sigma 1+ sigma 2+ sigma 3+ sigma 4 is 2;
if L is less than L1, the central control module determines that the temperature calculation parameter is sigma 1;
if L1 is not less than L < L2, the central control module determines that the temperature calculation parameter is sigma 2;
if L2 is not less than L < L3, the central control module determines that the temperature calculation parameter is sigma 3;
and if L is larger than or equal to L3, the central control module determines that the temperature calculation parameter is sigma 4.
10. The system of claim 9, wherein when the central control module determines that the temperature calculation parameter is σ i, the central control module calculates a temperature difference Δ H, sets Δ H to lx σ i, sets i to 1,2,3,4, and when the temperature difference calculation is completed, the central control module determines a heating detection point temperature a, sets a to Δ H + H, where H represents the temperature detected by the temperature module.
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