CN114387754A - Antenna control method and device based on fire-fighting linkage - Google Patents
Antenna control method and device based on fire-fighting linkage Download PDFInfo
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- CN114387754A CN114387754A CN202011112318.0A CN202011112318A CN114387754A CN 114387754 A CN114387754 A CN 114387754A CN 202011112318 A CN202011112318 A CN 202011112318A CN 114387754 A CN114387754 A CN 114387754A
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- 238000000034 method Methods 0.000 title claims abstract description 54
- 238000004891 communication Methods 0.000 claims abstract description 63
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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
- G08B17/06—Electric actuation of the alarm, e.g. using a thermally-operated switch
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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
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
- G08B25/08—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using communication transmission lines
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
- G08B25/10—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using wireless transmission systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/02—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
- H01Q3/04—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying one co-ordinate of the orientation
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Abstract
The embodiment of the invention provides an antenna control method and device based on fire-fighting linkage, wherein the method comprises the following steps: and receiving a linkage control instruction sent by the fire-fighting linkage system through the antenna control device, and adjusting the heights and/or transmitting parameters of the antennas of the plurality of fire-fighting subareas related to the fire position according to the linkage control instruction. According to the fire-fighting linkage-based antenna control method and device provided by the embodiment of the invention, the antennas of the fire-fighting subarea where the fire position is located and the fire-fighting subareas of the relevant areas of the fire position can penetrate through the smoke resident layer area, the attenuation of smoke to signals can be reduced, the energy of the signals emitted by the antennas can be higher, more concentrated and longer in propagation distance, the communication requirements of evacuation and escape of people, rescue of trapped people and fire elimination can be met when a fire occurs, and more effective communication guarantee can be provided.
Description
Technical Field
The invention relates to the technical field of communication, in particular to an antenna control method and device based on fire-fighting linkage.
Background
Communication guarantee in a fire scene is very important for fire rescue, and can provide help for evacuation and escape of people, rescue of trapped people and elimination of fire.
The high-frequency communication signal has the phenomenon of smoke attenuation (smoke attenuation for short) in a fire smoke scene, and the smoke attenuation loss is large especially in an indoor scene. In addition, due to the factors of large-flow personnel evacuation, the approach of rescue equipment, the development of wireless search and rescue and the like, the requirement on wireless communication in a fire rescue site is suddenly increased in a short time. Therefore, when a fire occurs, the wireless indoor distribution communication system is difficult to meet the communication requirements of people evacuation and escape, trapped people rescue and fire extinguishment, and cannot provide effective communication guarantee.
Disclosure of Invention
The embodiment of the invention provides an antenna control method and device based on fire-fighting linkage, which are used for overcoming the defect of poor wireless communication effect in the prior art when a fire disaster occurs and realizing the guarantee of wireless communication on a fire scene.
The embodiment of the invention provides an antenna control method based on fire-fighting linkage, which comprises the following steps:
receiving a linkage control instruction sent by a fire-fighting linkage control system;
adjusting the height and/or transmission parameters of the antenna according to the linkage control instruction;
the linkage control command is a command which is sent to antenna control devices of a plurality of fire control subareas related to a fire position by the fire-fighting linkage control system after the fire position is confirmed.
According to the antenna control method based on fire-fighting linkage, the transmission parameters comprise: at least one of a beam width, an antenna weight, and a transmit power.
According to the antenna control method based on fire-fighting linkage, the specific steps of adjusting the height and/or the transmission parameters of the antenna according to the linkage control instruction comprise:
adjusting the height of the antenna;
and if the height adjustment of the antenna is finished, adjusting the transmission parameters of the antenna.
According to the antenna control method based on fire-fighting linkage, the specific steps of adjusting the height and/or the transmission parameters of the antenna according to the linkage control instruction comprise:
adjusting the height of the antenna;
and if the time length of the linkage control instruction received by the distance is judged and obtained to reach a preset time length threshold value, adjusting the transmitting parameters of the antenna.
According to the antenna control method based on fire-fighting linkage, the specific steps of adjusting the height of the antenna comprise:
and descending the antenna to enable the difference between the height of the antenna after adjustment and the height of the antenna before adjustment to meet a preset condition.
According to the antenna control method based on fire-fighting linkage, the specific steps of adjusting the transmitting parameters of the antenna comprise:
reduce beamwidth, adjust antenna weights, or increase transmit power.
According to the antenna control method based on fire-fighting linkage, after the height and/or the transmission parameter of the antenna are/is adjusted according to the linkage control instruction, the method further comprises the following steps:
receiving a linkage ending instruction sent by the fire-fighting linkage control system;
restoring the height and/or the transmitting parameters of the antenna to a state before adjustment according to the linkage ending instruction;
wherein the linkage completion instruction is an instruction transmitted by the fire-fighting linkage control system to antenna control devices of a plurality of fire-fighting zones associated with the fire location after the fire is confirmed to be completed.
The embodiment of the invention also provides an antenna control device based on fire-fighting linkage, which comprises:
the communication module is used for receiving a linkage control instruction sent by the fire-fighting linkage control system;
the control module is used for adjusting the height and/or the transmitting parameter of the antenna according to the linkage control instruction;
the linkage control command is a command which is sent to antenna control devices of a plurality of fire control subareas related to a fire position by the fire-fighting linkage control system after the fire position is confirmed.
The embodiment of the invention also provides electronic equipment, which comprises a memory, a processor and a computer program which is stored on the memory and can be run on the processor, wherein when the processor executes the program, the steps of the fire-fighting linkage-based antenna control method are realized.
Embodiments of the present invention further provide a non-transitory computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of any one of the above-mentioned fire-fighting linkage-based antenna control methods.
According to the fire-fighting linkage-based antenna control method and device provided by the embodiment of the invention, the heights and/or transmission parameters of the antennas of a plurality of fire-fighting subareas related to the fire position are adjusted according to the received linkage control instruction sent by the fire-fighting linkage system, so that the energy of signals transmitted by the antennas penetrating through the smoke resident layer area is higher and more concentrated, the attenuation of smoke to the signals can be reduced, the transmission distance of the signals transmitted by the antennas is longer, the anti-interference capability is stronger, the communication requirements of evacuation and escape of people, rescue of trapped people and elimination of fire can be met when the fire occurs, and more effective communication guarantee can be provided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic flowchart of an antenna control method based on fire fighting linkage according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an antenna control device based on fire fighting linkage according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, 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. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.
In order to overcome the problems in the prior art, the embodiments of the present invention provide an antenna control method and apparatus based on fire protection linkage, and the inventive concept is that when a fire occurs, the antenna control apparatus is linked with a fire alarm control system to perform corresponding adjustment for the occurrence of the fire, so as to ensure the signal strength after the fire occurs, and provide more effective communication guarantee in the fire scene.
Fig. 1 is a schematic flow chart of an antenna control method based on fire-fighting linkage according to an embodiment of the present invention. The following describes an antenna control method based on fire-fighting linkage according to an embodiment of the present invention with reference to fig. 1. As shown in fig. 1, the method includes: and S101, receiving a linkage control instruction sent by a fire-fighting linkage control system.
The linkage control instruction is an instruction sent by the fire-fighting linkage control system to the antenna control devices of a plurality of fire-fighting subareas associated with the fire location after the fire location is confirmed.
The execution main body of the antenna control method based on the fire-fighting linkage according to the embodiment of the present invention is an antenna control device based on the fire-fighting linkage (hereinafter, referred to as "antenna control device").
Specifically, the automatic fire alarm system can find fire and alarm at the first time through the trigger device, the fire alarm device, the linkage output device and the device with other auxiliary functions, and transmit the obtained information to the fire alarm control system.
The fire alarm control system can receive the information sent by the automatic fire alarm system, determine the fire position according to the information and record the related information. The fire alarm control system can also start the automatic fire extinguishing equipment and the fire fighting linkage control equipment through the automatic fire fighting control system and the fire fighting linkage control system.
It should be noted that the automatic fire alarm system can convert physical information such as smoke, heat, and the location of a fire, which are generated by combustion during the fire, into electrical signals to transmit to the fire alarm controller.
It should be noted that, the device in the wireless indoor distribution communication system may include: antennas, transmitters, transducers, and the like. Wherein the antenna is used to transmit communication signals.
When a fire occurs, smoke from the fire rises, forming a smoke-retaining layer on the ceiling of the building. The high-frequency communication signal is attenuated due to smoke in a fire smoke scene. The installation position of current antenna and smog reside in the same region with the layer, and smog resides the layer and directly influences the signal of antenna transmission, causes the decay of signal, and then influences wireless communication.
In the existing 5G frequency band, the frequency range of 2.6GHz is 2515MHz to 2675MHz, and the frequency range of 4.9GHz is 4800MHz to 4900 MHz. The main frequency band of the millimeter wave is distributed between 30GHz and 300 GHz. The 5G coverage frequency at present is mainly 2.6 GHz.
Within 6 minutes from the discovery of the fire, the mass concentration and density of the smoke gradually rose to a peak. The particle radius in the smoke increases over time since the fire is discovered, and the particle volume increases as a result of particle agglomeration accompanied by a coalescence effect. The mass concentration and density of smoke generated by a fire and the particle volume reach peak values within 4 to 5 minutes from the discovery of the fire, the speed is increased rapidly from the initial stage to the complete development stage of the fire, and the smoke slowly falls after reaching the peak values.
When a fire occurs, the 2.6GHz signal is attenuated in an indoor fire environment from 0.3dB to 1.6 dB. The mass concentration and density of the smoke produced by a fire and the particle volume are the determining factors for signal attenuation.
On the one hand, for the indoor distribution signal coverage area of the high frequency band, when a fire disaster occurs in the fire fighting subarea to which the antenna belongs, from the initial smoldering stage of the fire disaster to the complete development stage of the fire disaster, the microwave signal and the millimeter wave of the high frequency band are attenuated by the smoke of the fire disaster, and the higher the signal frequency band emitted by the antenna is, the greater the signal attenuation influenced by the smoke is, so that the wireless indoor distribution communication system cannot provide effective communication guarantee.
On the other hand, in a conventional state, antenna transmission parameters are comprehensively evaluated according to factors such as application scenes, user requirements, antenna load capacity and input cost accounting, and optimal parameter setting is already performed. When a fire disaster occurs, the wireless communication demand of a fire scene is suddenly increased due to the factors that trapped people gradually gather in a fire passage, a refuge layer or other refuge areas, the entering of rescue equipment, the development of wireless search and rescue and the like. At this time, the communication signal provided by the wireless indoor distribution communication system in the conventional state cannot meet the wireless communication requirement in the fire scene, so that effective communication guarantee cannot be provided.
For the above two reasons, in the case of a fire, a general wireless indoor distribution communication system cannot guarantee wireless communication at a fire site.
A common fire alarm control system and a wireless indoor sub-communication system are two mutually independent systems, and equipment in the wireless indoor sub-communication system does not belong to fire-fighting linkage control equipment. Therefore, the wireless indoor branch communication system can be linked with the fire alarm control system, equipment in the wireless indoor branch communication system can be used as one of fire-fighting linkage control equipment, corresponding adjustment is carried out aiming at the occurrence of fire according to a linkage control instruction transmitted by the fire-fighting linkage control system, so that the signal intensity after the fire occurs is ensured, and more effective communication guarantee is provided on the fire scene.
In order to guarantee wireless communication in a fire scene, smoke attenuation loss of communication signals can be reduced by controlling the position and parameters of the antenna, and communication requirements in the fire scene are met.
Specifically, the linkage of the wireless indoor distribution communication system and the fire alarm control system can be realized through the antenna control device, and the antenna in the wireless indoor distribution communication system can be correspondingly adjusted through the antenna control device.
The fire alarm control system can determine the fire position according to the information sent by the automatic fire alarm system and sends the fire position information to the fire-fighting linkage control system. After receiving the fire position information and confirming the fire position, the fire-fighting linkage control system can send linkage control instructions to the antenna control devices of a plurality of fire-fighting subareas related to the fire position according to the fire position information.
The antenna control device of each fire-fighting subarea related to the fire position can receive the linkage control instruction sent by the fire-fighting linkage control system.
It should be noted that the fire zones associated with the fire location may include: the fire sector in which the fire is located, and the fire sector of the relevant area of the fire, for example: for fire-fighting subareas such as fire-fighting subareas of a department hall, a large supermarket, a large hotel, a large business building and a KTV, wherein the fire-fighting subareas are part or all of the halls and rooms where the upper floor and/or the lower floor corresponding to the fire position in the related floors of the fire position are located, and the evacuation walkways of each floor and the like; for refuge floors and evacuation walkways of each floor of super-high and high-rise buildings, the fire zones associated with the fire position can be the floor where the fire position is located, part or all of the fire zones of the refuge floors, the evacuation walkways of each floor and other fire zones; for cinemas, theaters, concert halls and exhibition centers, the fire-fighting zones related to the fire location can be fire-fighting zones such as partial or all halls and rooms on the floor where the fire location is located and fire-fighting zones such as evacuation walkways on each floor.
And S102, adjusting the height and/or the transmission parameter of the antenna according to the linkage control instruction.
It should be noted that, in the case of a fire, the temperature of smoke generated by the fire is high, and the smoke gradually rises to form a smoke staying layer on the ceiling of the building, and the mass concentration, density and particle volume of the smoke in the smoke staying layer are far larger than those in other areas of the fire scene. The antenna and the smoke residence layer are located in the same area, and signals transmitted by the antenna directly enter the smoke residence layer and can reach a receiving end only by penetrating through the smoke residence layer. The signal is attenuated more during the passage through the smoke-retaining layer.
By adjusting the height of the antenna, the antenna can penetrate through the area of the smoke residence layer, and the attenuation of smoke to wireless signals is reduced.
It can be understood that, in the embodiment of the present invention, the antenna in the wireless indoor distribution communication system adopts a height-adjustable installation manner.
For example, can optimize the upgrading according to the L type support of ordinary room branch antenna, the installation stops to open and stops the sensor, and the antenna is installed fixedly in the screw rod below, is provided with elevating gear on the screw rod to can adjust the height of antenna through elevating gear's rotation.
By adjusting the antenna transmission parameters, the energy of the signals transmitted by the antenna can be high or concentrated, the propagation distance of the signals transmitted by the antenna is longer, and the anti-interference capability is stronger, so that the communication requirement of a fire scene is met.
It should be noted that, the attenuation of the smoke to the wireless signal may be reduced by adjusting the height of the antenna or adjusting the transmission parameter of the antenna, or may be reduced by combining the method of adjusting the height of the antenna and adjusting the transmission parameter of the antenna.
According to the embodiment of the invention, the heights and/or the transmitting parameters of the antennas of the plurality of fire-fighting subareas related to the fire position are adjusted according to the received linkage control instruction sent by the fire-fighting linkage system, so that the antennas penetrate through the smoke resident layer area and/or the transmitted signal energy is higher and more concentrated, the signal attenuation caused by smoke can be reduced, the transmission distance of the signal transmitted by the antennas is longer, the anti-interference capability is stronger, the communication requirements of evacuation and escape of people, rescue of trapped people and fire elimination can be met when a fire occurs, and more effective communication guarantee can be provided.
Based on the content of the foregoing embodiments, the transmission parameters include: at least one of a beam width, an antenna weight, and a transmit power.
By adjusting the beam width, the weight value or the transmitting power of the antenna, the intensity of a signal transmitted by the antenna, the main coverage range of the antenna, the directionality of the signal and the like can be controlled, so that the anti-interference capability of the signal is improved, and the wireless communication requirement of a fire scene can be met in a special scene when a fire disaster occurs.
Specifically, the beam width is one of parameters describing the performance of the antenna, and refers to an included angle between two directions in which the radiation power decreases by 3dB on both sides of the maximum radiation direction. The lobe with the highest radiation intensity is called a main lobe, the other lobes are called side lobes or side lobes, and the lobe with the lowest radiation intensity is in the maximum radiation direction.
And the antenna weight is used for describing the frequency bands and the lobes supported by the antenna and corresponding internal downtilt angles. The antenna weight can influence the coverage of the signal through amplitude and phase, particularly, the magnitude of the transmitting power can be adjusted by changing the magnitude of the amplitude, and the transmitting beam can be changed by comprehensively using the amplitude and the phase.
The transmission power refers to the energy of electromagnetic waves transmitted by an antenna within a certain frequency band range. The greater the transmission power, the stronger the signal strength, and the relatively longer the distance the signal is transmitted.
According to the embodiment of the invention, the beam width, the weight of the antenna and the transmitting power are adjusted independently or in combination, so that the strength of the signal transmitted by the antenna, the main coverage range of the antenna and the directionality of the signal can be controlled, the communication requirements of evacuation and escape of people, rescue of trapped people and fire elimination can be met when a fire disaster occurs, and more effective communication guarantee can be provided.
Based on the content of the above embodiments, the specific step of adjusting the height and/or the transmission parameter of the antenna according to the linkage control instruction includes: the height of the antenna is adjusted.
According to different stages of fire development in a fire scene, the height of the antenna and the transmission parameters can be respectively adjusted.
Specifically, the development of fire is divided into four stages: an initial stage, a developmental stage, a violent stage, and a decline and extinction stage. Wherein, the initial stage and the development stage of the fire development can produce smog, and gradually form the smog and stay the layer at the building ceiling. When the fire is continuously developed to a violent stage, the thickness of the smoke staying layer reaches a critical value, and the smoke begins to flow back downwards.
The height of the antenna can be adjusted in the initial stage and the development stage of the fire, so that the attenuation of fire smoke to signals transmitted by the antenna is reduced.
The antenna control means may adjust the height of the antenna so that the antenna may penetrate the smoke stagnation layer.
And if the height adjustment of the antenna is judged and known to be completed, adjusting the transmission parameters of the antenna.
When the fire is in a violent stage and smoke flows back downwards, the attenuation effect of the smoke on signals transmitted by the antenna cannot be reduced by adjusting the height of the antenna. At the moment, wireless communication on a fire scene can be guaranteed by adjusting the transmitting parameters of the antenna.
Specifically, the antenna control device may determine whether the height adjustment of the antenna is completed.
If the fire is considered to have progressed to a violent stage, the antenna control device can adjust the transmission parameters of the antenna, enhance the energy of the signal transmitted by the antenna and compensate the signal attenuation caused by smoke.
According to the embodiment of the invention, the height of the antenna is adjusted at the initial stage and the development stage of the fire development, so that the antenna penetrates through the smoke resident layer, the attenuation of smoke to signals is reduced, the transmission parameters of the antenna are adjusted at the fierce stage of the fire development, the energy of the signals transmitted by the antenna is enhanced, the signal attenuation caused by smoke is compensated, the communication requirements of evacuation and escape of people, rescue of trapped people and fire elimination can be met when a fire occurs, and the requirement of a fire scene on wireless communication can be better met.
Based on the content of the above embodiments, the specific step of adjusting the height and/or the transmission parameter of the antenna according to the linkage control instruction includes: the height of the antenna is adjusted.
According to different stages of fire development in a fire scene, the height of the antenna and the transmission parameters can be respectively adjusted.
Specifically, the development of fire is divided into four stages: an initial stage, a developmental stage, a violent stage, and a decline and extinction stage. Wherein, the initial stage and the development stage of the fire development can gradually generate smoke, and a smoke staying layer is formed on the ceiling of the building. When the fire is going to develop into a violent stage, the thickness of the smoke staying layer reaches a critical value and the smoke starts to flow back downwards.
The height of the antenna can be adjusted in the initial stage and the development stage of the fire, so that the attenuation of fire smoke to signals transmitted by the antenna is reduced.
The antenna control means may adjust the height of the antenna so that the antenna may penetrate the smoke stagnation layer.
And if the time length of the distance receiving linkage control instruction reaches a preset time length threshold value, adjusting the transmitting parameters of the antenna.
When a fire occurs, trapped people in certain special areas, such as refuge floors of high-rise buildings, fire channels or other refuge areas, can gather in the special areas in a short time. If the transmission parameters of the antennas are adjusted after the height of the antennas in the special area is adjusted, the wireless communication requirements of large-flow personnel gathered in a short time may not be met.
Further, if a fault occurs in the process of adjusting the height of the antenna, the height adjustment of the antenna cannot be completed, and the antenna control device can also adjust the transmission parameters of the antenna.
Specifically, the time when the antenna control device receives the linkage control instruction may be recorded, and whether the time from the current time to the time when the linkage control instruction is received reaches a preset time threshold may be determined.
If it is reached, indicating that a large crowd of people is likely to occur, the antenna control device adjusts the transmission parameters of the antenna.
The preset time threshold may be determined according to actual conditions, for example: the time required by the antenna to complete height adjustment in a conventional state can be obtained and used as a preset time threshold; or the shortest time for the large-flow personnel to reach a certain refuge area can be obtained and used as a preset time threshold. The embodiment of the present invention is not particularly limited to specific values of the duration threshold.
According to the embodiment of the invention, the height of the antenna is adjusted at the initial stage and the development stage of the fire development, so that the antenna penetrates through the smoke residence layer, the attenuation of smoke to signals is reduced, the emission parameters of the antenna are adjusted after the time for receiving the linkage control instruction reaches the preset time threshold, the energy of the signals emitted by the antenna can be enhanced, the communication requirements of evacuation and escape of people, rescue of trapped people and elimination of fire can be met when the fire occurs, and the requirement of a fire scene on wireless communication can be better met.
Based on the content of the above embodiments, the specific step of adjusting the height of the antenna includes: and descending the antenna to enable the difference between the height of the antenna after adjustment and the height of the antenna before adjustment to meet the preset condition.
The antenna is usually arranged under the suspended ceiling; in the environment without a suspended ceiling, the antenna adopts a hanging bracket fixing mode.
In the event of a fire, the smoke generated by the fire rises, forming a smoke-retaining layer on the ceiling of the building. The mass concentration and density of smoke and particle volume within the smoke retaining layer are much greater than in other areas of the fire scene. The theoretical thickness range of the smoke staying layer is within 15% of the distance from the ceiling to the floor, and in the smoke staying layer, the mass concentration and density of smoke and the particle volume are gradually increased along with the reduction of the distance from the ceiling of a building.
Generally, the installation position of the antenna and the smoke resident layer are in the same area, the antenna is used as a source of signal transmission and is directly influenced by the smoke resident layer with high mass concentration and density and large particle size, and signal attenuation is large.
By descending the antenna, the antenna can penetrate through the smoke residence area as far as possible and reach the lower part of the smoke residence layer, so that signals transmitted by the antenna can be directly transmitted to a space with less smoke, and the attenuation of the smoke residence layer to the signals can be avoided to a great extent.
The preset conditions can be determined according to the floor height of the building, the distance between the installation position of the antenna in the fire-fighting subarea and the fire-fighting spray head, the protection area of the fire-fighting spray head and other factors.
It should be noted that, certain safe distance needs to be kept between the installation position of the antenna and the fire sprinkler head, so that the antenna is prevented from being damaged when the fire sprinkler head sprays water. If the fire-fighting spray heads are arranged in a rectangular shape, the mounting position of the antenna is generally selected to be the central position of the rectangular shape; if the fire sprinklers are arranged in a straight line, the antenna is generally installed at the midpoint between the two fire sprinklers. The distance between the antenna and the spray heads is 1-2 meters, if the spray heads are arranged in a matrix, the center position of the matrix is preferably selected, if the spray heads are arranged in a straight line, the center between the adjacent 2 spray heads is selected for installation, and thus the influence of the spray heads when spraying water is minimum.
For example: if the floor height of the building is 3 meters, the safety distance between the installation position of the antenna and two adjacent fire-fighting spray heads is about 1.27 meters, and the protection area of the fire-fighting spray heads is 10 square meters. Can obtain according to the water smoke parabola of fire control shower nozzle during operation, two fire control shower nozzle spun water smoke parts overlap, there is a regional water smoke that does not have of a slice above the water smoke of overlap, and the height in this no water smoke region is: the distance between the ceiling and the floor is 10 to 15 percent, namely less than 0.45 meter. It can be determined that the difference between the adjusted height of the antenna and the height before adjustment in the fire fighting area satisfies the preset conditions: the height difference between the adjusted height of the antenna and the height before adjustment is 0.3-0.45 m.
If the floor height of the building is 6 meters, the safety distance between the installation position of the antenna and two adjacent fire-fighting spray heads is about 2.12 meters, and the protection area of the fire-fighting spray heads is 20 square meters. Can obtain according to the water smoke parabola of fire control shower nozzle during operation, two fire control shower nozzle spun water smoke parts overlap, there is a regional water smoke that does not have of a slice above the water smoke of overlap, and the height in this no water smoke region is: the distance between the ceiling and the floor is 10 to 15 percent, namely less than 0.9 meter. It can be determined that the difference between the adjusted height of the antenna and the height before adjustment in the fire fighting area satisfies the preset conditions: the height difference between the adjusted height of the antenna and the height before adjustment is 0.6-0.9 m.
Because the omnidirectional antenna is installed in a ceiling-mounted manner, a height adjusting space of about 0.5 m theoretically exists, wherein a certain distance needs to be reserved between the top end of the antenna and a top wall surface, for example, 50mm-70mm is taken, and the actually obtained adjusting height can be more than or equal to 0.5 m and less than 0.6 m.
According to the embodiment of the invention, the antenna control device lowers the antenna until the height difference between the adjusted height of the antenna and the height before adjustment meets the preset condition, the antenna passes through the smoke residence area and reaches the lower part of the smoke residence layer, the signal transmitted by the antenna can be directly transmitted into the space with less smoke, the signal attenuation of the smoke residence layer can be avoided, the communication requirements of evacuation and escape of people, rescue of trapped people and fire elimination can be met when a fire disaster occurs, and more effective communication guarantee can be provided.
Based on the content of the above embodiments, the specific step of adjusting the transmission parameters of the antenna includes: reduce beamwidth, adjust antenna weights, or increase transmit power.
The antenna control means may adjust the transmission parameters of the antenna.
Specifically, reducing the beam width can concentrate the energy of the signal emitted by the antenna, improve the directionality of the signal emitted by the antenna, increase the range of the signal, and enhance the anti-interference capability of the signal.
The antenna weights are typically the phases of the signals. Adjusting the antenna weights may enable changing the coverage of the transmit beams. The antenna weight can be adjusted by adjusting the built-in antenna weight or by self-defining a new weight according to the weight set by a manufacturer.
The strength of the signal transmitted by the antenna can be enhanced by increasing the transmission power, the signal transmission distance is increased, and the anti-interference capability of the signal is enhanced.
The transmission power can be adjusted step by step according to the attenuation value of the signals with different frequencies (for example, the attenuation value of 2.7GHz power is 1.6dB), and the transmission power is increased step by step.
According to the embodiment of the invention, the beam width is reduced, the weight of the antenna is adjusted or the transmitting power is increased through the antenna control device, the acting distance of the signal can be increased, the anti-interference capability of the signal is enhanced, the wireless communication of a fire scene can be better ensured, and the requirement of the fire scene on the wireless communication can be better met.
Based on the content of the foregoing embodiments, after adjusting the height and/or the transmission parameter of the antenna according to the linkage control instruction, the method further includes: and receiving a linkage ending instruction sent by the fire-fighting linkage control system.
The linkage ending instruction is an instruction sent by the fire-fighting linkage control system to antenna control devices of a plurality of fire-fighting subareas related to the fire position after the fire is confirmed to end.
The automatic fire alarm system can judge whether the fire in a certain fire-fighting subarea is over according to the information such as smoke, heat or physical information such as the position of the fire when the fire occurs. And if the fire automatic alarm system judges that the fire is over, sending related information to a fire alarm control system.
The fire alarm control system can receive information sent by the automatic fire alarm system, and can close the automatic fire extinguishing equipment and restore the fire extinguishing linkage control equipment to a normal state through the automatic fire extinguishing control system and the fire extinguishing linkage control system.
Specifically, the fire alarm control system can determine the fire completion according to the information sent by the automatic fire alarm system and send the related information to the fire-fighting linkage control system. And the fire-fighting linkage control system receives the information, confirms that the fire disaster is ended, and sends linkage ending instructions to the antenna control devices of a plurality of fire-fighting subareas related to the fire disaster position.
And receiving the linkage ending instruction sent by the fire-fighting linkage control system by the antenna control devices of the fire-fighting subareas related to the fire position.
And according to the linkage ending instruction, reducing the height and/or the transmitting parameters of the antenna to the state before adjustment.
It should be noted that, in a conventional state, if the height of the antenna is lowered, the normal operation of the antenna and the aesthetic property of the building are affected. If the signals transmitted by the antenna always keep higher power, narrower beam width or are adjusted to antenna weight values in special states, the loss of the antenna equipment is larger, resource waste is caused, the operation and maintenance cost is increased, and the adverse effects of reducing the coverage area of the signals transmitted by the antenna and the like are reduced. Therefore, after determining that the fire is over, the antenna control device needs to restore the height and/or transmission parameters of the antenna to a state before adjustment.
And each antenna control device receiving the linkage ending instruction correspondingly adjusts the antenna according to the linkage ending instruction, and restores the height and/or the transmitting parameter of the antenna to the state before adjustment.
Specifically, the antenna control device may lift the antenna so that the height of the antenna is restored to the height before adjustment.
The antenna control device can increase the beam width, adjust the antenna weight or reduce the transmitting power, so that the beam width, the antenna weight or the transmitting power can be restored to the values before adjustment.
According to the embodiment of the invention, the heights and/or the transmitting parameters of the antennas of the plurality of fire-fighting subareas related to the fire position are/is restored to the state before adjustment according to the received linkage ending instruction sent by the fire-fighting linkage control system, so that the antennas of the fire-fighting subareas in the fire position and the fire-fighting subareas in the related area of the fire position can be restored to the conventional state after the fire is ended, and the antennas can work in the normal state after the fire is ended.
The following describes the fire-fighting linkage-based antenna control device according to the embodiment of the present invention, and the fire-fighting linkage-based antenna control device described below and the fire-fighting linkage-based antenna control method described above may be referred to in correspondence with each other.
Fig. 2 is a schematic structural diagram of an antenna control device based on a fire fighting linkage according to an embodiment of the present invention. Based on the content of the above embodiments, as shown in fig. 2, the apparatus includes a communication module 201 and a control module 202, wherein:
the communication module 201 is used for receiving a linkage control instruction sent by a fire-fighting linkage control system;
the control module 202 is used for adjusting the height and/or the transmitting parameters of the antenna according to the linkage control instruction;
the linkage control instruction is an instruction sent by the fire-fighting linkage control system to the antenna control devices of a plurality of fire-fighting subareas associated with the fire location after the fire location is confirmed.
Specifically, the communication module 201 and the control module 202 are electrically connected.
The communication module 201 of the antenna control device of each fire-fighting zone associated with the fire location can receive the linkage control command sent by the fire-fighting linkage control system.
The control module 202 may adjust the height of the antenna or adjust the antenna transmission parameter individually, or may adjust the height of the antenna and the adjusted antenna transmission parameter in combination.
The fire-fighting linkage-based antenna control device provided by the embodiment of the invention is used for executing the fire-fighting linkage-based antenna control method provided by each embodiment of the invention, and the specific method and process for realizing the corresponding functions of each module included in the fire-fighting linkage-based antenna control device are described in the embodiment of the fire-fighting linkage-based antenna control method, and are not described herein again.
The antenna control device based on the fire-fighting linkage is used for the antenna control method based on the fire-fighting linkage of the embodiments. Therefore, the description and definition in the antenna control method based on fire fighting linkage in the foregoing embodiments can be used for understanding the execution modules in the embodiments of the present invention.
According to the embodiment of the invention, the heights and/or the transmitting parameters of the antennas of the plurality of fire-fighting subareas related to the fire position are adjusted according to the received linkage control instruction sent by the fire-fighting linkage system, so that the antennas penetrate through the smoke resident layer area and/or the transmitted signal energy is higher and more concentrated, the signal attenuation caused by smoke can be reduced, the transmission distance of the signal transmitted by the antennas is longer, the anti-interference capability is stronger, the communication requirements of evacuation and escape of people, rescue of trapped people and fire elimination can be met when a fire occurs, and more effective communication guarantee can be provided.
Fig. 3 illustrates a physical structure diagram of an electronic device, which may include, as shown in fig. 3: a processor (processor)301, a memory (memory)302, and a bus 303; wherein, the processor 301 and the memory 302 complete the communication with each other through the bus 303; processor 301 is configured to invoke computer program instructions stored in memory 302 and executable on processor 301 to perform the fire-fighting linkage-based antenna control method provided by the above-described method embodiments, the method comprising: receiving a linkage control instruction sent by a fire-fighting linkage control system, and adjusting the height and/or emission parameters of the antenna according to the linkage control instruction, wherein the linkage control instruction is an instruction sent by the fire-fighting linkage control system to antenna control devices of a plurality of fire-fighting subareas associated with a fire position after the fire position is confirmed.
Furthermore, the logic instructions in the memory 302 may be implemented in software functional units and stored in a computer readable storage medium when sold or used as a stand-alone product. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
In another aspect, an embodiment of the present invention further provides a computer program product, where the computer program product includes a computer program stored on a non-transitory computer-readable storage medium, where the computer program includes program instructions, and when the program instructions are executed by a computer, the computer is capable of executing the fire-fighting linkage-based antenna control method provided by the above-mentioned method embodiments, where the method includes: receiving a linkage control instruction sent by a fire-fighting linkage control system, and adjusting the height and/or emission parameters of the antenna according to the linkage control instruction, wherein the linkage control instruction is an instruction sent by the fire-fighting linkage control system to antenna control devices of a plurality of fire-fighting subareas associated with a fire position after the fire position is confirmed.
In another aspect, an embodiment of the present invention further provides a non-transitory computer-readable storage medium, on which a computer program is stored, where the computer program is implemented by a processor to execute the method for controlling an antenna based on a fire fighting linkage provided in the foregoing embodiments, and the method includes: receiving a linkage control instruction sent by a fire-fighting linkage control system, and adjusting the height and/or emission parameters of the antenna according to the linkage control instruction, wherein the linkage control instruction is an instruction sent by the fire-fighting linkage control system to antenna control devices of a plurality of fire-fighting subareas associated with a fire position after the fire position is confirmed.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. An antenna control method based on fire-fighting linkage is characterized by comprising the following steps:
receiving a linkage control instruction sent by a fire-fighting linkage control system;
adjusting the height and/or transmission parameters of the antenna according to the linkage control instruction;
the linkage control command is a command which is sent to antenna control devices of a plurality of fire control subareas related to a fire position by the fire-fighting linkage control system after the fire position is confirmed.
2. The fire protection linkage-based antenna control method according to claim 1, wherein the transmission parameters include: at least one of a beam width, an antenna weight, and a transmit power.
3. A fire fighting linkage based antenna control method according to claim 1, wherein the specific step of adjusting the height and/or transmission parameters of the antenna according to the linkage control instruction comprises:
adjusting the height of the antenna;
and if the height adjustment of the antenna is finished, adjusting the transmission parameters of the antenna.
4. A fire fighting linkage based antenna control method according to claim 1, wherein the specific step of adjusting the height and/or transmission parameters of the antenna according to the linkage control instruction comprises:
adjusting the height of the antenna;
and if the time length of the linkage control instruction received by the distance is judged and obtained to reach a preset time length threshold value, adjusting the transmitting parameters of the antenna.
5. The fire protection linkage-based antenna control method according to claim 1, wherein the specific step of adjusting the height of the antenna comprises:
and descending the antenna to enable the difference between the height of the antenna after adjustment and the height of the antenna before adjustment to meet a preset condition.
6. The fire protection linkage-based antenna control method according to claim 2, wherein the specific step of adjusting the transmission parameters of the antenna comprises:
reduce beamwidth, adjust antenna weights, or increase transmit power.
7. A fire fighting linkage-based antenna control method according to any one of claims 1 to 6, wherein after adjusting the height and/or transmission parameters of the antenna according to the linkage control instruction, the method further comprises:
receiving a linkage ending instruction sent by the fire-fighting linkage control system;
restoring the height and/or the transmitting parameters of the antenna to a state before adjustment according to the linkage ending instruction;
wherein the linkage completion instruction is an instruction transmitted by the fire-fighting linkage control system to antenna control devices of a plurality of fire-fighting zones associated with the fire location after the fire is confirmed to be completed.
8. The utility model provides an antenna control device based on fire control linkage which characterized in that includes:
the communication module is used for receiving a linkage control instruction sent by the fire-fighting linkage control system;
the control module is used for adjusting the height and/or the transmitting parameter of the antenna according to the linkage control instruction;
the linkage control command is a command which is sent to antenna control devices of a plurality of fire control subareas related to a fire position by the fire-fighting linkage control system after the fire position is confirmed.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor when executing the program implements the steps of the method of fire protection linkage based antenna control according to any one of claims 1 to 7.
10. A non-transitory computer readable storage medium having a computer program stored thereon, wherein the computer program when executed by a processor implements the steps of the method for fire protection linkage based antenna control according to any of claims 1 to 7.
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| CN111133330A (en) * | 2018-08-29 | 2020-05-08 | 深圳市大疆创新科技有限公司 | Control method and device of laser radar, laser radar and storage medium |
| CN110011032A (en) * | 2019-02-21 | 2019-07-12 | 成都中技智慧企业管理咨询有限公司 | A kind of open/close control device and method of airborne emergency communication system antenna |
| CN109979151A (en) * | 2019-03-28 | 2019-07-05 | 赛特威尔电子股份有限公司 | A kind of smog alarm method, apparatus, smoke alarm device and storage medium |
| CN110220979A (en) * | 2019-06-26 | 2019-09-10 | 重庆地质矿产研究院 | High and steep bank slope stability monitoring system and evaluation method based on microseism technology |
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