CN108916659A - Building safeguard information interactive managing system - Google Patents
Building safeguard information interactive managing system Download PDFInfo
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- CN108916659A CN108916659A CN201810771775.7A CN201810771775A CN108916659A CN 108916659 A CN108916659 A CN 108916659A CN 201810771775 A CN201810771775 A CN 201810771775A CN 108916659 A CN108916659 A CN 108916659A
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
- F17D5/06—Preventing, monitoring, or locating loss using electric or acoustic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/24—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using infrasonic, sonic, or ultrasonic vibrations
- G01M3/243—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using infrasonic, sonic, or ultrasonic vibrations for pipes
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Alarm Systems (AREA)
Abstract
The present invention relates to a kind of building safeguard information interactive managing systems.The building safeguard information interactive managing system includes：For obtaining intensity signal, multidate information and/or the prewarning unit of pipeline information；The monitor supervision platform for the information that the prewarning unit is sent is received, monitor supervision platform compares the information received with preset threshold, determines whether to send alarm command according to judging result；In response to the alarm command that monitor supervision platform is sent, the emergency disposal unit being laid at pipeline valve or/and electric brake executes power operation according to alarm command or/and closes valve.Real-time dynamic monitoring and real-time static monitoring techniques to monitoring region are realized simultaneously using the building safeguard information interactive managing system and method for the embodiment of the present invention, realize the security protection of building construction.
Description
Technical Field
The invention relates to the fields of building stability detection and safety prevention and control of pipelines in buildings, in particular to a building security information interaction management system.
Background
With the improvement of social economy and the living standard of people, various building groups are more and more, pipelines such as water, electricity, heating, gas and the like, electric wires, cables, communication optical cables and the like which are matched with the building groups extend around underground, especially the safety of the application of gas pipelines (coal gas and natural gas) brings potential risks to people and the society on the premise of providing great convenience for people in life and work, and once improper operation or negligence can bring harm and disasters. On the other hand, the stability of building foundations and main structures and the dynamic safety control of daily application are important parts in urban construction, and have become a focus of international and domestic social attention, and the social expectation makes many researchers bitter for solving the problem and struggle for final solution.
Disclosure of Invention
The invention provides an embodiment of a building security information interaction management system, which can realize the security prevention and control of buildings by monitoring the stability of building foundations and main structures in real time and monitoring the dynamic and static security of pipelines (cables) in the buildings. The early warning of forward movement when the accident is initially discovered from the back is verified, the supply of water, electricity, gas and the like is automatically cut off, and when the monitoring platform sends out an alarm instruction, the water, electricity or/and gas supply source in the building is automatically closed, so that the accident range is prevented from being enlarged, the loss can be reduced or stopped, the fire fighting pressure can be reduced, and the valuable time is won for emergency rescue.
In the embodiment of the building security information interaction management system provided by the invention, the method comprises the following steps:
the early warning unit is used for acquiring and sending light intensity information, dynamic information and/or pipeline information;
the monitoring platform receives the light intensity information, the dynamic information and/or the pipeline information sent by the early warning unit, and comprises:
the first judgment module is used for comparing the light intensity information with a preset light intensity threshold value;
the second judgment module is used for comparing the dynamic information with a preset dynamic threshold value;
the third judgment module is used for comparing the pipeline information with a preset pipeline threshold value;
the alarm module determines whether to send an alarm instruction according to the judgment results of the first judgment module, the second judgment module and the third judgment module;
the emergency disposal unit is arranged at a pipeline valve or/and a switch, responds to an alarm instruction sent by the alarm, and executes power-off operation or/and valve closing according to the alarm instruction;
wherein,
the early warning unit comprises a static and dynamic early warning monitoring module and a pipeline early warning monitoring module;
the static and dynamic early warning monitoring module is used for monitoring a first preset monitoring area in real time to acquire the light intensity information and the dynamic information; the dynamic information comprises vibration information and deformation information;
the pipeline early warning and monitoring module is used for monitoring a water pipe or a gas pipeline in real time to acquire pipeline information; the pipeline information includes sonic information or infrasonic information or ultrasonic information.
Further, in this embodiment, the early warning unit further includes:
the odor recognition early warning module is used for collecting gas concentration information of a second preset monitoring area by adopting a concentration recognition instrument and transmitting the gas concentration information to the monitoring platform in a wired or wireless mode;
and the monitoring platform compares the gas concentration information with a preset concentration threshold value to determine whether to send the alarm instruction.
Further, in this embodiment, the static and dynamic warning and monitoring module adopts an ultra-short fiber grating warning and monitoring module, which includes:
the laser light source, the modulation amplifier, the circulator and the ultra-short fiber grating array are connected in sequence; the coupler is connected with the circulator, the matching interferometer and the reflected light detection submodule are connected with the coupler, and two output ports of the coupler are respectively connected with two arms of the matching interferometer; and the matching interferometer corresponds to the ultrashort weak fiber grating array.
Further, in this embodiment, the ultrashort weak fiber grating array is respectively arranged along the anti-extrusion ditch of the foundation of the building and the bottom of the bearing wall; the building is embedded or fixed on a wall surface from the ground to the roof along the main structure of the building; the cable and the optical cable are arranged along the line of the cable and the optical cable in the building; the method comprises the following steps of (1) arranging the pipeline along the outer wall surface of a to-be-detected area of the pipeline in the building; wherein,
the ultrashort fiber grating array comprises a plurality of optical fibers.
Further, in this embodiment, the pipeline early warning monitoring module includes:
the system comprises an infrasonic wave monitoring module, a sonic wave monitoring module and an ultrasonic wave monitoring module;
wherein,
the infrasonic wave monitoring module is used for monitoring infrasonic wave signals with the frequency not more than 20 Hz and acquiring infrasonic wave information;
the sound wave monitoring module is used for monitoring sound wave signals with the frequency of 20 Hz to 20000 Hz to acquire sound wave information;
the ultrasonic monitoring module is used for monitoring an ultrasonic signal with the frequency not less than 20000 Hz and acquiring the ultrasonic information.
Further, in this embodiment, the infrasonic wave monitoring module is disposed at two ends of the water pipe or/and the gas pipeline, and collects leakage infrasonic wave signals in the water pipe or/and the gas pipeline to obtain the infrasonic wave information; and
the sound wave monitoring module is also arranged at two ends of the water pipe or/and the gas pipeline, collects leakage infrasonic wave signals in the water pipe or/and the gas pipeline, and acquires infrasonic wave information.
In this embodiment, the acoustic monitoring module includes:
the sound wave monitors are arranged at two ends of the water pipe or/and the gas pipeline and are used for collecting and sending leakage sound wave signals;
and the sound wave analyzer is connected with the sound wave monitor in a wired or wireless mode, receives the leaked sound wave signals and acquires the sound wave information.
Further, in this embodiment, the ultrasonic monitoring module includes an ultrasonic monitor, and the ultrasonic monitor is disposed at one end of the gas pipeline, collects a leakage ultrasonic signal in the gas pipeline, and acquires the ultrasonic information.
Further, in this embodiment, the light intensity information, the dynamic information and/or the pipeline information are transmitted to the monitoring platform through wired or wireless transmission.
Further, in this embodiment, the wireless transmission mode includes: one or more of NB-IoT, eMTC, LoRa, zigbee, wifi or Bluetooth.
According to the embodiment of the building security information interaction management system, the static and dynamic early warning monitoring module is used for monitoring a first preset monitoring area in real time to obtain the light intensity information and the dynamic information, and the pipeline early warning monitoring module is used for monitoring a gas pipeline in real time to obtain the pipeline information. The early warning unit sends the acquired light intensity information, dynamic information and/or pipeline information to the monitoring platform, and the monitoring platform compares the light intensity information with a preset light intensity threshold value, the dynamic information with a preset dynamic threshold value and the pipeline information with a preset pipeline threshold value respectively to determine whether to send an alarm instruction or not. When the monitoring platform sends an alarm instruction, the emergency disposal unit is arranged at a pipeline valve or/and a switch, and power-off operation or/and valve closing is executed according to the alarm instruction. The system detects the stability of the building foundation and the main structure and dynamically monitors the safe transportation of water, electricity and gas pipelines in the building facilities, so that the problems of safety prevention and control are solved, the real-time dynamic and static monitoring of a monitoring area is realized, and the safety protection of the building is ensured.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of a building security information interaction management system according to the present invention;
FIG. 2 is a schematic structural diagram of a static and dynamic early warning monitoring module in an embodiment of a building security information interaction management system according to the present invention;
FIG. 3 shows the leak detection and location principle of the pipeline early warning monitoring module in an embodiment of the building security information interaction management system of the present invention;
fig. 4 is a schematic system architecture diagram of an embodiment of the building security information interaction management system of the present invention.
Description of reference numerals:
10-an early warning unit;
101-static and dynamic early warning monitoring module; 102-a pipeline early warning monitoring module;
1011-laser light source; 1012-modulation amplifier; 1013-a circulator; 1014-ultrashort weak fiber grating array; 1015-coupler; 1016-matched interferometer; 1017-reflected light detection submodule;
20-a monitoring platform;
201-a first judgment module; 202-a second judgment module; 203-a third judgment module; 204-an alarm module;
30-emergency disposal unit.
Detailed Description
The following detailed description of the present invention, taken in conjunction with the accompanying drawings and examples, is provided to enable the invention and its various aspects and advantages to be better understood. However, the specific embodiments and examples described below are for illustrative purposes only and are not limiting of the invention.
In an embodiment of the building security information interaction management system of the present invention, as shown in fig. 1, a schematic structural diagram of the building security information interaction management system is shown. The building security information interaction management system of this embodiment includes: an early warning unit 10, a monitoring platform 20 and an emergency treatment unit 30. The early warning unit 10 is configured to obtain light intensity information, dynamic information and/or pipeline information, and send the light intensity information, the dynamic information and/or the pipeline information to the monitoring platform 20 in a wired or wireless manner; the monitoring platform 20 performs summary interaction, calculation and analysis on the light intensity information, the dynamic information and/or the pipeline information to determine whether to send an alarm instruction; when the monitoring platform 20 sends an alarm command, the emergency handling unit 30 disposed at the pipeline valve or the electric brake performs a power-off operation or/and closes the valve according to the alarm command, so as to cut off the hazard source.
The early warning unit 10 includes a static and dynamic early warning monitoring module 101 and a pipeline early warning monitoring module 102. The static and dynamic early warning monitoring module 101 is used for monitoring a first preset monitoring area (generally a building foundation and a main structure) in real time to acquire light intensity information and dynamic information; the pipeline early warning and monitoring module 102 is used for monitoring a water pipe or a gas pipeline in real time to acquire pipeline information. Meanwhile, the method can also be applied to monitoring of cables.
The dynamic information acquired by the static and dynamic early warning monitoring module 101 includes vibration information or deformation information of a first preset monitoring area. The first preset monitoring area can be a building foundation or/and a main structure, such as a building foundation anti-extrusion ditch, a column beam and the like; or pipelines in buildings, such as water, electricity, gas pipelines and the like.
The monitoring platform 20 receives and processes the light intensity information, the dynamic information and/or the pipeline information sent by the early warning unit 10. Wherein, monitoring platform 20 includes: a first judging module 201, a second judging module 202, a third judging module 203 and an alarm module 204. The first judging module 201 is configured to compare the received light intensity information with a preset light intensity threshold; the second judging module 202 is configured to compare the received dynamic information with a preset dynamic threshold; the third determining module 203 is configured to compare the received pipeline information with a preset pipeline threshold. The alarm module 204 determines whether to send an alarm instruction according to the comparison result of the first judging module 201 or/and the second judging module 202 or/and the third judging module 203.
The first judging module 201, the second judging module 202 and the third judging module 203 can all adopt comparators to realize the functions thereof, and are simple and economical. Or, the interaction and analysis can be realized by adopting a computer, the light intensity information, the dynamic information and the pipeline information are sent to the computer for interaction and analysis, and the result obtained through signal conversion, calculation and analysis is used for determining whether to send an alarm instruction to the alarm module 204.
The alarm module 204 sends an alarm according to the comparison result of the first determining module 201 or/and the second determining module 202 or/and the third determining module 203, and may send different alarm instructions or one alarm instruction according to the comparison result. Such as: the alarm module 204 sends a first alarm instruction according to the comparison result of the first judgment module 201, sends a second alarm instruction according to the comparison result of the second judgment module 202, and sends a third alarm instruction according to the comparison result of the third judgment module 203. In this process, the emergency unit 30 performs different emergency operations according to different alarm commands, mainly cutting off the power supply or/and closing valves (water, gas, etc.) to cut off the hazard as a whole.
The emergency treatment unit 30 is installed at the main valves and nodes of the water, electricity and gas pipelines, and performs the whole or partial response processing through the instructions given by the monitoring platform 20.
In actual application, when the monitoring platform 20 gives an alarm command to a gas or other gas pipeline in a building, the emergency treatment unit 30 automatically cuts off the power supply and the gas supply, but does not cut off the water supply; in the event of a building fire or power failure, the emergency treatment unit 30 automatically closes the electric brake, simultaneously closes the gas valve and other gas path valves, but does not cut off the water path supply. The real-time monitoring of whether water and gas pipelines in a monitoring area use gas or leak gas, use water or leak water is realized through the early warning unit 10, and the real-time monitoring can be set in a targeted manner according to the requirements.
In this embodiment, the early warning unit 10 further includes an odor identification early warning module, and the module collects concentration information of gas (methane, ethane, propane, butane, or the like) in the second preset monitoring area by using a concentration identifier, and transmits the concentration information to the monitoring platform 20 in a wired or wireless manner, so as to realize odor identification monitoring of the leaked gas in the second preset monitoring area. The monitoring platform 20 compares the gas concentration information with a preset concentration threshold to determine whether to send an alarm command. Here, the monitoring platform 20 further includes a fourth determining module, configured to compare the gas concentration information with a preset concentration threshold, and send the result to the alarm module 204, where the alarm module 204 determines whether to send an alarm command according to the comparison result. After the alarm module 204 sends an alarm instruction, the emergency disposal unit 30 executes corresponding operations according to the alarm instruction, such as closing a valve, opening a self-exhaust system, and the like, so that the gas in the monitored area is rapidly exhausted, and air convection exchange is performed with the outside, so as to reduce the gas concentration within a certain range and rapidly eliminate danger.
Gas leakage identification to gas pipeline, gas concentration such as methane in the second preset monitoring area is monitored through the concentration identification appearance, the molecule of the gas that distributes in the monitoring area is discerned, and gas concentration information such as methane that will monitor converts the analog signal of telecommunication into, rethread monitoring platform 20 carries out data processing to it, convert the analog signal of telecommunication into digital signal (be gas concentration information), send for fourth judgment module with wired or wireless mode, compare gas concentration information and preset concentration threshold value by fourth judgment module, and send the result for alarm module 204, alarm module 204 confirms whether to send alarm command according to the comparison result. Once the comparison result is different, the alarm function of the alarm module 204 is started to send an alarm to the emergency disposal unit 30, and a gate valve closing instruction is issued, so that the water gate valve, the electric gate valve and the gas gate valve in the building are automatically closed at the same time. And the self-exhaust system is opened to quickly exhaust the gas in the monitoring area out of the building for emission, so that the monitoring concentration is quickly reduced, and the self-explosion and self-ignition danger is eliminated.
In a specific embodiment, the concentration of methane in the second preset monitoring area is monitored by the concentration identifier, molecules of gas emitted in the monitoring area are identified, the monitored methane concentration information is converted into an analog electrical signal, the analog electrical signal is converted into a digital signal by the data processing module and is sent to the monitoring platform 20 in a wired or wireless manner, the received digital signal is compared with a preset concentration threshold value by the fourth judgment module and a comparison result is sent to the alarm module 204, if the result is greater than the preset concentration threshold value, the alarm module 204 sends an alarm instruction, and the emergency handling unit 30 executes corresponding operations according to the alarm instruction, such as closing a valve, opening a self-discharging system, and the like.
In a specific embodiment, a computer is used as the monitoring platform 20 to process and analyze the data, and the monitoring platform 20 receives the early warning light intensity information, the dynamic information and/or the pipeline information sent by the early warning unit 10, and the early warning light intensity information, the dynamic information and/or the pipeline information are summarized and processed by the platform computer. The monitoring platform 20 receives the comparison warning information of the warning unit 10, that is: the light intensity information received by the first judging module 201 is compared with a preset light intensity threshold; the second judging module 202 is configured to compare the received dynamic information with a preset dynamic threshold; the third determining module 203 is configured to compare the received pipeline information with a preset pipeline threshold. The early warning unit 10 transmits early warning information to the computer through wired or wireless transmission of the detection data exceeding or falling below the predetermined threshold, and the result obtained through the summary calculation and analysis of the computer sends a warning instruction to the warning module 204.
In the embodiment, the information is subjected to summary interactive calculation and analysis through the computer platform, so that different alarm instructions can be sent. According to the monitoring information transmission of the first judging module 201 or/and the second judging module 202 or/and the third judging module 203, the alarm module 204 sends an alarm instruction after the results obtained by computer summary calculation and analysis, and the alarm instruction can be sent out by different alarm instructions or by one alarm instruction. Such as: building basis and major structure monitoring, computer according to the monitoring information that first judging module 201 and second judging module 202 provided, through comparison, interactive calculation and analysis, in case when the unusual numerical value appears, will start alarm command, alarm module 204 will send alarm command this moment, and emergency treatment unit 30 will be with building water, electricity, gas gate valve automatic closure simultaneously. If the building water pipe is in a problem, the computer can directly start a water pipe alarm instruction according to the monitoring information provided by the third judgment module 203 through comparison and analysis, the alarm module 204 sends the alarm instruction at the moment, and the emergency disposal unit 30 automatically closes the building water pipe valve.
In the embodiment of the building security information interaction management system provided by the invention, the static and dynamic early warning monitoring module 101 adopts an ultra-short weak fiber grating early warning module, which comprises: the system comprises a laser light source 1011, a modulation amplifier 1012, a circulator 1013 and an ultrashort weak fiber grating array 1014 which are connected in sequence; and coupler 1015 connected to circulator 1013, matching interferometer 1016 and reflected light detection sub-module 1017 connected to coupler 1015. Two output ports of coupler 1015 are connected to two arms of matching interferometer 1016, respectively; matching interferometer 1016 corresponds to ultra-short weak fiber grating array 1014.
The ultrashort weak fiber grating sensing module is a wavelength detection method based on the fiber dispersion principle, measures the central wavelength of an ultrashort weak fiber grating array 1014 to obtain an optical central wavelength signal, and obtains light intensity information at each grating position by processing through a first preset algorithm. Because the light intensity information corresponds to the temperature information and the strain information of the first preset monitoring area, namely the static or quasi-static information of the building are correspondingly acquired.
The matching interferometer 1016 corresponds to the ultra-short fiber grating array 1014, and is configured to receive reflected light that passes through the ultra-short fiber grating array 1014, and the reflected light detection sub-module 1017 detects the received reflected light. And acquiring an optical interference signal according to the interference signal change condition of the reflected light pulse. And the optical interference signals are processed by a second preset algorithm to obtain phase change information of the optical fiber section between every two adjacent optical fiber gratings, so that dynamic monitoring of the first preset monitoring area is realized. And vibration information and strain information of the building are obtained, and high-sensitivity distributed disturbance detection is realized.
In this embodiment, the static and dynamic early warning monitoring module 101 is disposed in a first preset monitoring area to monitor the first preset monitoring area, so as to obtain a central wavelength signal and an optical interference signal of the ultra-short and weak fiber bragg grating, the central wavelength signal of the ultra-short and weak fiber bragg grating is converted into light intensity information of the first preset monitoring area through a first preset algorithm, and the optical interference signal of the ultra-short and weak fiber bragg grating is converted into dynamic information of the first preset monitoring area through a second algorithm.
In this embodiment, the static and dynamic warning and monitoring module 101 completes data collection, processing and transmission. When data is processed, the first preset algorithm is as follows:
|E|2≈R*{2+cos[2*β*(L-Lr)]}
β＝2*π*n/λs
wherein E is the light intensity of each ultrashort weak fiber grating; r is the reflectivity of the ultrashort weak fiber grating, n and lambdasRespectively the refractive index and the central wavelength of the ultrashort weak fiber grating, L is the distance between adjacent ultrashort weak fiber gratings, LrTo match the arm difference of interferometer 1016.
In this embodiment, light emitted from the laser light source 1011 is modulated into a pulse signal sequentially by the modulation amplifier 1012 and the circulator 1013, and then enters the short and weak fiber grating array 1014 with the number of gratings N. Each incident pulse will produce N reflected light pulses. Since the arm length of the matching interferometer 1016 is equal to the distance between adjacent gratings, two optical pulses with matched paths interfere with each other, a corresponding optical interference signal is obtained by measuring the interference signal, and the phase change information of the optical fiber section between the two corresponding gratings is obtained by processing the optical interference signal through a second preset algorithm, so that the vibration signal of the building is demodulated with high sensitivity.
When the arm difference of the matching interferometer 1016 completely matches the distance between adjacent ultrashort weak fiber gratings, the time that the transmission pulse of the previous grating reaches the reflected light detection sub-module 1017 after passing through the long arm of the matching interferometer 1016 is exactly coincident with the time that the reflection pulse of the next grating reaches the reflected light detection sub-module 1017 after passing through the short arm of the matching interferometer 1016, so that two light pulse interferences are formed. Then each optical pulse signal entering the ultrashort weak optical fiber grating array 1014 receives N +1 optical pulses in the reflected light detection submodule 1017, wherein the middle N-1 optical pulses are pairwise interference signals between adjacent gratings, and high-sensitivity distributed vibration detection can be performed by detecting the phase change of the interference signals.
According to the characteristics of the matching interferometer 1016, in the static and dynamic early warning monitoring module of the embodiment, a 3x3 coupler method is adopted for signal demodulation, the characteristic that output signals of the matching interferometer 1016 at three ends of the coupler 1015 mutually differ by 2 pi/3 phase is utilized, phase information can be obtained through differential cross multiplication operation, and dynamic monitoring of a preset monitoring area is achieved. And vibration information and strain information of the building are obtained, and high-sensitivity distributed disturbance detection is realized. Wherein the second preset algorithm is as follows:
wherein,phi (t) represents a phase difference of the optical interference signals; and ψ (t) represents a phase difference of the external interference signal;representing a vibration signal or a deformation signal; voutRepresenting the output signal of coupler 1015.
In this embodiment, the ultrashort weak fiber grating array 1014 is respectively arranged along the anti-extrusion ditch of the building foundation and the bottom of the bearing wall; the building wall is embedded or fixed on a wall surface from the ground to the roof along the main structure of the building; the cable is arranged along the cable and the optical cable in the building; along the outer wall surface of the area to be detected of the pipeline (water, electricity, gas, etc.) in the building. The ultrashort weak fiber grating array 1014 includes a plurality of optical fibers.
In the embodiment of the building security information interaction management system provided by the invention, the pipeline early warning monitoring unit 102 is arranged on the building gas pipeline, when the pipeline leaks, a medium in the pipeline is sprayed out from a leakage point, the leakage can excite different fluctuations, the frequency ranges of the fluctuations are distributed in the sizes of leakage holes, the leakage speed and the leakage medium, and can be from several hertz to hundreds of kilohertz, and the fluctuations comprise infrasonic waves, negative pressure waves, ultrasonic waves, noise and the like. The leakage sound waves propagate to two sides along the pipeline, in the propagation process, the attenuation of the leakage sound signals of the high-frequency part is fast, the attenuation of the low frequency is slow, and the main component of the leakage sound waves is infrasonic waves when the leakage sound waves finally reach the sensors on the two sides of the pipeline. The infrasonic wave belongs to an ultralow frequency range, has higher signal intensity and slower attenuation speed in the propagation process, and can also show a special form in the external environment.
The pipeline early warning monitoring module 102 includes an infrasonic wave monitoring module, a sonic wave monitoring module and an ultrasonic wave monitoring module. The infrasonic wave monitoring module is used for monitoring infrasonic wave signals with the frequency not more than 20 Hz and acquiring infrasonic wave information; the sound wave monitoring module is used for monitoring sound wave signals with the frequency of 20 Hz to 20000 Hz to acquire sound wave information; the ultrasonic monitoring module is used for monitoring an ultrasonic signal with the frequency not less than 20000 Hz and acquiring ultrasonic information.
In this embodiment, the sound wave monitoring module is disposed at two ends of the water pipe or/and the gas pipe, and collects a leakage sound wave signal of the pipe to be monitored (the water pipe or/and the gas pipe) to acquire sound wave information. The system comprises a sound wave monitor and a sound wave analyzer, wherein the sound wave monitor is arranged at two ends of a gas pipeline and is used for collecting and transmitting leakage sound wave signals; the sound wave analyzer is connected with the sound wave monitor in a wired or wireless mode, receives the leaked sound wave signals, converts the leaked sound wave signals into analog electric signals, and converts the analog electric signals into digital signals (sound wave information).
The infrasonic wave monitoring module is arranged at two ends of the water pipe or/and the gas pipeline to be monitored, collects leakage infrasonic wave signals of the water pipe or/and the gas pipeline to be monitored, and acquires infrasonic wave information. The infrasonic wave monitoring module is the same as the sound wave monitoring module, and adopts an infrasonic wave monitor and an analyzer to collect infrasonic wave signals in the gas pipeline and convert the infrasonic wave signals into infrasonic wave information.
The ultrasonic monitoring unit is arranged at one end of the gas pipeline, and an ultrasonic detector is adopted to collect leakage ultrasonic signals in the gas pipeline and acquire ultrasonic information.
Through the pipeline early warning monitoring units 102 arranged at two ends of a pipeline in a building, leakage infrasonic waves, leakage sonic waves or leakage ultrasonic signals in the pipeline are collected, corresponding analog electric signals are generated and converted into corresponding digital signals, the digital signals are sent to the monitoring platform 20, and the monitoring platform 20 compares the received digital signals with preset threshold values to determine whether to send alarm instructions or not.
In this embodiment, no matter realize the user through passageway about the building and use, or get into the resident family through upper and lower staircase space to the gas pipeline in the building, all have fine prevention and control effect. Because the gas of coal gas and natural gas is diffused to the top and the propane and butane subside downwards after entering the air, once the gas pipeline leaks, the air convection is insufficient under the condition of no external influence, and the diffused gas in the shaft or corridor is wholly covered up and down. Although the ultrashort weak fiber grating array 1014 can realize full-line monitoring and monitor each point, in the application of monitoring underground pipelines with wide crossing areas and uncertain construction environments, false alarm is easy to occur due to the over-sensitive characteristic of ultrashort weak fiber gratings, so that the temperature of the gas conveying pipeline in a building is realized by combining the static and dynamic early warning monitoring module 101 with the pipeline early warning monitoring module 102, dynamic and static perception recognition early warning and odor recognition early warning are realized by combining the odor recognition early warning module, monitoring information is sent to the monitoring platform 20 in a wired or wireless mode at the beginning of leakage (water, gas and the like), and the monitoring platform comprehensively analyzes and compares the temperature to determine whether to issue an instruction for closing a gas supply source and cutting off the dangerous source.
When the pipeline leaks, the medium in the pipeline at the leakage point is rapidly lost due to the difference between the pressure inside and outside the pipeline, and the pressure is instantly reduced, so that complex leakage waves including infrasonic waves can be generated at the leakage point as a sound wave source, and the infrasonic waves pass through the pipeline and the medium, are transmitted from the leakage point to the two ends of the pipeline, and pass through t1、t2After time, the signals are respectively transmitted to the head end and the tail end and captured by the infrasonic wave monitoring module or the sonic wave monitoring module or the ultrasonic wave monitoring module. According to the detected waveform characteristics of the leakage sound wave, infrasonic wave or ultrasonic wave, whether leakage occurs can be judged, and then the leakage point can be positioned according to the propagation time difference and the propagation speed of the leakage infrasonic wave, sonic wave or ultrasonic wave signals. The basis of the building internal combustion pipeline leakage detection and positioning algorithm is leakage gas signals collected by monitoring modules at the head end and the tail end of the pipeline, and whether the pipeline leaks or not and the position of a leakage point are determined by utilizing signal processing methods such as signal cross-correlation analysis and the like. The leak detection and location principle of the pipeline early warning monitoring module 102 for gas is shown in fig. 3.
When the pipeline early warning monitoring module 102 detects a signal of leaking infrasonic waves or sound waves or ultrasonic waves, it is determined that the pipeline leaks, an analog electric signal is generated, the analog electric signal is converted into a digital signal, the digital signal is processed through a third preset algorithm, and the position of a leaking point of the pipeline is located according to a calculation result. The third preset algorithm is as follows:
wherein, s is the distance between the leakage point and the detection point, and the unit is: rice;
l is the distance between two corresponding monitoring modules, and the unit is: rice;
v is the velocity of the leaking gas (infrasonic or sonic or ultrasonic) in units of: m/s;
△ t is the difference in time of arrival of the leaking gas at the two corresponding monitoring modules in seconds.
In a specific embodiment, the infrasonic wave sensor developed by noise and vibration laboratories of the academy of sciences is adopted in the infrasonic wave monitoring module as the infrasonic wave sensing system, so that a good effect is achieved. A series of types of infrasound sensors are developed in a noise and vibration laboratory of Chinese academy of sciences, and comprise moving-coil infrasound sensors, bellows diaphragm capsule type infrasound sensors and capacitive infrasound sensors, eight types of capacitive infrasound sensors have been developed so far, namely CC-1T type infrasound sensors and CDC-2B type infrasound sensors, InSAS2008 (right) infrasound sensors have the sensitivity of 750mv/Pa to 900mv/Pa, and the infrasound sensors are suitable for measuring the sound pressure of infrasound waves and constructing infrasound measurement arrays for measuring the sound source position and the propagation characteristics of the infrasound waves.
In the embodiment of the building security information interaction management system, the whole state of a building needs to be concerned all the time, the instant state of the whole system can be reflected at any time through real-time processing, and once data occurs, the data is immediately stored and corresponding processing is carried out. For convenience and backup, a storage unit may be further disposed in the embodiment of the building security information interaction management system, and is configured to receive the light intensity information, the dynamic information, and/or the pipeline information sent by the early warning unit 10. The monitoring platform 20 can call the light intensity information, the dynamic information and/or the pipeline information in real time through wired or wireless transmission in the storage unit.
Although monitoring area is monitored through static and dynamic early warning monitoring module 101, and the position of gas discharge point can be found through pipeline early warning monitoring module 102 again, as business residential building or resident building resident application gas, should be clear from the technical matter resident gas consumption or gas leakage, just can guarantee building resident safety.
At present, a gas management unit supplies gas to a building by using low-pressure or medium-pressure, building residents discharge the gas through a valve switch, and a gas valve is manufactured according to the technical requirements of national industry standards (CJ/T3055-1995), so that strict requirements on gas valve use materials, inner wall cleanliness, sealing degree, connection smoothness and the like are required in design in order to avoid the problem of non-concentricity of the valve or gas leakage of different gardens, and therefore, the boundary of a discharge port of a household gas valve is smooth, and formed airflow pulsation sound is round and thick; the use characteristics are as follows: the intermittency is strong (the gas discharge is sudden and small).
And the jet flow boundary is uneven when the gas outlet of the gas pipeline is broken and leaked, and jet flow mixed noise, sharpness and noise are generated by strong wake flow pulsation formed by jetting. The characteristics of gas discharge are: the high sound wave in the gas discharge is strong, the gas discharge time is long, no intermittent pause exists, and the leakage breaking point can be evolved from small to large along with the time.
In the embodiment of the building security information interaction management system, the pipeline early warning and monitoring module 102 is arranged on a gas pipeline, gas in the gas pipeline leaks, so that the gas in the pipeline releases elastic energy to cause the excited energy to oscillate instantaneously to generate sound waves and continuously transmit signals, and the leakage or resident application can be rapidly determined through the sound wave analyzer. Analyzing according to turbulence, sound wave, continuity and momentum discharged by gas in a gas pipeline and sound generated by the aperture of a gas discharge point and boundary conditions to obtain the size of the aperture of the gas discharge point and determine whether the gas is used or leaked; and determining that the residents forget to use the gas and giving early warning in time according to the time relation between the stability and the continuity of the discharged gas.
In the embodiment of the building security information interaction management system, the dynamic security prevention and control of the safe transportation and the application of the area to be monitored (such as a gas pipeline) in the building facility are realized; the accurate positioning of the detected object is realized, the instruction is sent out while the automatic early warning is carried out, and the supply source is automatically closed. Similarly, the method can also be applied to safety monitoring of gas and fluid pipelines such as tap water and heating of buildings.
In the embodiment of the building security information interaction management system, the dynamic security prevention and control of the safe transportation and application of a gas pipeline and other (gas or fluid) pipelines in a building facility are realized by detecting the stability of a building foundation and a main structure; the method realizes accurate positioning of the detected object, and the supply source is automatically closed while automatic early warning and sending an alarm instruction after analysis and evaluation through a monitoring platform (such as a computer platform).
In the specific embodiment of the building security information interaction management system provided by the invention, the light intensity information, the dynamic information and the pipeline information are all transmitted to the monitoring platform 20 in a wired or wireless transmission mode. Wherein, the wireless transmission mode includes: the mobile terminal comprises one or more of NB-IoT (Narrow Band Internet of Things), eMTC (application scenario of the Internet of Things, ultra-reliable low-delay, emphasis on communication requirements between objects), LoRa (typical low-power wide area Internet of Things-LPWAN technology), zigbee (low-power local area network protocol based on IEEE802.15.4 standard, short-distance, low-complexity, low-power, low-rate and low-cost bidirectional wireless communication technology), wifi or Bluetooth.
Data processing (data processing) is the collection, storage, retrieval, processing, transformation, and transmission of data. The basic purpose of data processing is to extract and derive valuable, meaningful data to humans from large, possibly chaotic, unintelligible amounts of data. Data processing is a technical process of analyzing and processing data (both numerical and non-numerical). Including the processing and processing of various raw data analysis, sorting, calculation, editing, etc. With the increasing popularity of computers, the proportion of numerical calculation in the field of computer applications is small, and information management through computer data processing has become a major application. In the embodiment of the building security information interaction management system, the computer platform and the big data platform can be used as carriers for information collection, information analysis and information processing of building security in the building security information interaction management system.
In data processing, calculation is generally simple, and processing calculation in a data processing service is different according to different services, and an application program needs to be written according to the service requirements for solving the problem. The data processing has different modes according to different structural modes and working modes of the processing equipment and different time and space distribution modes of the data. Different processing methods require different hardware and software support. Each processing mode has its own characteristics, and an appropriate processing mode should be selected according to the actual environment of the application problem.
The block diagrams in the figures may, in other embodiments, perform functions in a different order than in the figures, or some may perform substantially in parallel, often depending on the function.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
Fig. 4 is a schematic diagram of a system architecture of an embodiment of the building security information interaction management system of the present invention. In this embodiment, the early warning unit 10 includes odor identification early warning module, ultrashort fiber bragg grating early warning monitoring module, infrasonic wave monitoring module, sound wave monitoring module and ultrasonic wave monitoring module, and the area to be monitored is realized through these early warning monitoring modules, like the early warning monitoring of gas supply line, water supply line, power supply line and building basis and main part, acquires the dynamic and static information of the area to be monitored, and pipeline information. Then, the early warning unit 10 sends the collected information to the monitoring platform 20, and the monitoring platform 20 analyzes and compares the information sent by the early warning unit 10 to determine whether to send an alarm instruction. When an alarm command needs to be sent, the emergency treatment unit 30 receives the command and executes the command to close a valve (gas or fluid such as water or gas) or cut off the power supply. The specific functions and processes of the units and modules are as described above, and are not described in detail herein.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. The utility model provides a building security protection information interaction management system which characterized in that includes:
the early warning unit is used for acquiring and sending light intensity information, dynamic information and/or pipeline information;
the monitoring platform receives the light intensity information, the dynamic information and/or the pipeline information sent by the early warning unit, and comprises:
the first judgment module is used for comparing the light intensity information with a preset light intensity threshold value;
the second judgment module is used for comparing the dynamic information with a preset dynamic threshold value;
the third judgment module is used for comparing the pipeline information with a preset pipeline threshold value;
the alarm module determines whether to send an alarm instruction according to the judgment results of the first judgment module, the second judgment module and the third judgment module;
the emergency disposal unit is arranged at a pipeline valve or/and a switch, responds to an alarm instruction sent by the monitoring platform, and executes power-off operation or/and closes a valve according to the alarm instruction;
wherein,
the early warning unit comprises a static and dynamic early warning monitoring module and a pipeline early warning monitoring module;
the static and dynamic early warning monitoring module is used for monitoring a first preset monitoring area in real time to acquire the light intensity information and the dynamic information; the dynamic information comprises vibration information or deformation information;
the pipeline early warning and monitoring module is used for monitoring a water pipe and a gas pipeline in real time to acquire pipeline information; the pipeline information includes sonic information or infrasonic information or ultrasonic information.
2. The building security information interaction management system of claim 1, wherein the early warning unit further comprises:
the odor recognition early warning module is used for collecting gas concentration information of a second preset monitoring area by adopting a concentration recognition instrument and transmitting the gas concentration information to the monitoring platform in a wired or wireless mode;
and the monitoring platform compares the gas concentration information with a preset concentration threshold value to determine whether to send the alarm instruction.
3. The building security information interaction management system of claim 1, wherein the static and dynamic early warning monitoring module adopts an ultra-short fiber grating early warning monitoring module, comprising:
the laser light source, the modulation amplifier, the circulator and the ultrashort weak optical fiber grating array are connected in sequence; the coupler is connected with the circulator, the matching interferometer and the reflected light detection submodule are connected with the coupler, and two output ports of the coupler are respectively connected with two arms of the matching interferometer; and the matching interferometer corresponds to the ultrashort weak fiber grating array.
4. The building security information interaction management system according to claim 3, wherein the ultrashort fiber grating array is respectively arranged along a foundation anti-extrusion ditch and the bottom of a bearing wall of the building; the building is embedded or fixed on a wall surface from the ground to the roof along the main structure of the building; the cable and the optical cable are arranged along the line of the cable and the optical cable in the building; the method comprises the following steps of (1) arranging the pipeline along the outer wall surface of a to-be-detected area of the pipeline in the building; wherein,
the ultrashort fiber grating array comprises a plurality of optical fibers.
5. The building security information interaction management system of claim 1, wherein the pipeline early warning monitoring module comprises:
the system comprises an infrasonic wave monitoring module, a sonic wave monitoring module and an ultrasonic wave monitoring module;
wherein,
the infrasonic wave monitoring module is used for monitoring infrasonic wave signals with the frequency not more than 20 Hz and acquiring infrasonic wave information;
the sound wave monitoring module is used for monitoring sound wave signals with the frequency of 20 Hz to 20000 Hz and acquiring the sound wave information;
the ultrasonic monitoring module is used for monitoring an ultrasonic signal with the frequency not less than 20000 Hz and acquiring the ultrasonic information.
6. The building security information interaction management system according to claim 5, wherein the infrasonic wave monitoring modules are arranged at two ends of the water pipe or/and the gas pipeline, and are used for collecting leakage infrasonic wave signals in the water pipe or/and the gas pipeline to acquire infrasonic wave information; and
the sound wave monitoring module is also arranged at two ends of the water pipe or the gas pipeline, collects leakage infrasonic wave signals in the water pipe or the gas pipeline, and acquires infrasonic wave information.
7. The building security information interaction management system according to claim 5, wherein the ultrasonic monitoring module comprises an ultrasonic monitor, the ultrasonic monitor is arranged at one end of the gas pipeline, and is used for collecting leakage ultrasonic signals in the gas pipeline to obtain the ultrasonic information.
8. The building security information interaction management system according to any one of claims 1-7, wherein the light intensity information, the dynamic information and/or the pipeline information are transmitted to the monitoring platform by wired or wireless transmission.
9. The building security information interaction management system of claim 8, wherein the wireless transmission mode comprises: one or more of NB-IoT, eMTC, LoRa, zigbee, wifi or Bluetooth.
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