CN115154952A

CN115154952A - Vehicle fire prevention control method for underground garage

Info

Publication number: CN115154952A
Application number: CN202211020099.2A
Authority: CN
Inventors: 苏怡; 单志林
Original assignee: Anhui Yuqiu Fire Technology Co ltd
Current assignee: Anhui Yuqiu Fire Technology Co ltd
Priority date: 2022-08-24
Filing date: 2022-08-24
Publication date: 2022-10-11

Abstract

The invention relates to the field of fire protection, in particular to a vehicle fire prevention control method for an underground garage. The method comprises the following steps: s1: establishing a comparison table of sensor installation positions; s2: establishing an actuator installation position comparison table; s3: generating a list of adjacent parking spaces of each parking space; s4: acquiring a detection signal of a fire sensing device to generate a fire characteristic signal; s5: obtaining the coordinates of the fire scene according to the equipment identification codes of the sensors; s6: adjusting a PTZ (pan tilt zoom) cloud platform to acquire real-time monitoring videos of parking spaces, and identifying target parking spaces needing to execute a fire-fighting strategy according to the videos; s7: inquiring the actuator installation zone comparison table to obtain the equipment identification code of the actuating mechanism on the target parking space; s8: and issuing a control command, and executing different fire prevention strategies on the current parking space and the adjacent parking space respectively. The invention solves the problems of large fire hazard, easy spread of fire and high fire control difficulty of the underground garage.

Description

Vehicle fire prevention control method for underground garage

Technical Field

The invention relates to the field of fire fighting, in particular to a vehicle fire prevention control method for an underground garage.

Background

The electric automobile is a novel vehicle which takes a vehicle-mounted power supply as power and drives wheels to run by a motor, and meets various requirements of road traffic and safety regulations. The electric automobile can not discharge atmospheric pollutants in the use process, so that the electric automobile has the advantage of being more green and environment-friendly compared with a fuel automobile. For consumers, under the condition of driving the same mileage, the charging cost of the electric automobile is far lower than the fuel cost of the fuel vehicle; this has led to an increasing selection of electric vehicles by automobile users as vehicles for everyday use in the home.

Electric automobile uses chargeable lithium cell group as vehicle mounted power usually, and lithium cell group can produce the heat in the charging process, and the battery is very easily taken place thermal runaway when charge-discharge process breaks down because of external physics factor or self circuit problem moreover. The danger of thermal runaway of the battery pack is great, and a fire disaster can happen in severe cases. In addition, because the parking density of vehicles in spaces such as a parking lot is very high, when a certain electric vehicle breaks out a fire, adjacent vehicles around the electric vehicle are easily ignited, so that large-scale automobile combustion and fire accidents are caused, and great potential safety hazards and economic losses are caused. At present, with the continuous popularization and application of electric automobiles, serious fire accidents caused by spontaneous combustion of the electric automobiles occur all over the world.

Electric vehicles contain a large number of electronic components and meters, and contain battery packs that have a risk of explosion. Therefore, the automobile has the characteristic of electric fire when burning, and can not be treated by fire extinguishing agents such as water and the like. Currently, there are many methods for effectively preventing and treating a fire accident of a vehicle, such as a foam fire extinguishing agent, a fire blanket, and the like. The fire blanket is a braided fabric made of fireproof flame-retardant materials, and after a vehicle is covered with the fire blanket, the fire can be effectively blocked, the fire can be prevented from spreading to the periphery, and the loss of the fire can be reduced. However, the existing fire blanket usually needs to be laid manually when in use, so that the existing fire blanket may not be effective in time, and potential safety hazards may be brought to users who lay the fire blanket.

A large number of vehicles are often parked in the underground garage at the same time, when a fire disaster happens in the garage, the fire condition can be rapidly spread due to the fact that the vehicles are parked densely, and huge economic and property losses and personal safety risks are caused. The rapid popularization of electric vehicles also increases the fire risk level of underground garages; therefore, how to develop a fire-fighting control system suitable for an underground garage becomes a technical problem which needs to be solved urgently by the technical personnel in the field.

Disclosure of Invention

Therefore, the problems that fire hazard of the underground garage is large, fire easily spreads and fire control difficulty is high are solved; a vehicle fire prevention control method for an underground garage is provided.

The invention provides a vehicle fire prevention control method of an underground garage, which is applied to a fire protection system comprising a fire sensing device, a monitoring device, a vehicle fire prevention device, a spraying device and a control console. The underground garage is installed in a distributed mode through the fire sensing devices, each fire sensing device is responsible for a specific detection area, and the detection areas of all the fire sensing devices comprise the whole underground garage. The monitoring device adopts a double-channel camera with visible light imaging and infrared thermal imaging functions, and the camera is arranged on the PTZ holder. The quantity of monitoring devices is a plurality of and the distributing type is installed in underground garage each department, and under PTZ cloud platform regulation state, all monitoring devices's monitoring area contains all parking stalls in whole underground garage. The vehicle fire-proof device is arranged at the top of each parking space; the vehicle fire protection device comprises a plurality of fire blankets, and one of the fire blankets is automatically unfolded and covered right above the vehicle after receiving an equipment control signal. The spraying device comprises a single-control spray head arranged at the top of each parking space, and the single-control spray head is communicated with a fire-fighting spraying pipeline; the single-control spray head has a water spray mode and a foam spray mode. The control console is a control center of the fire fighting system.

The vehicle fire prevention control method provided by the embodiment specifically comprises the following steps:

s1: and establishing a comparison table of the installation positions of the sensors, wherein the mapping relation between the geographical coordinates of the installation positions of the fire sensing devices and the equipment identification numbers is established in the comparison table of the installation positions of the sensors.

S2: and establishing an actuator installation zone comparison table, wherein a mapping relation between the parking space number of each parking space or the associated vehicle license plate and the equipment identification codes of the vehicle fire protection device and the spraying device installed on the corresponding parking space is established in the actuator installation zone comparison table.

S3: according to a preset rule, a near parking space list is generated for each parking space in the underground garage, and the near parking space list contains parking space numbers of all parking spaces with spreading disaster risks when the parking space catches fire.

S4: acquiring detection signals of all places of the garage acquired by a fire sensing device, and judging whether all the detection signals exceed a preset safety threshold range; if so, a fire signature is generated.

S5: and determining the equipment identification code of the corresponding sensor according to the source of the generated fire characteristic signal, and then inquiring the comparison table of the installation area of the sensor to obtain the geographic coordinates of the parking space area generating the fire characteristic signal.

S6: and driving a PTZ holder in the monitoring device to rotate according to the geographic coordinates, and acquiring real-time monitoring videos of the parking places near the geographic coordinates. Then, determining a target parking space which should execute a fire prevention strategy according to the real-time monitoring video: the method for selecting the target parking space comprises the following steps:

s61: and performing framing processing on the real-time monitoring video, and sampling the framed images according to a preset sampling ratio to obtain sample images containing all the parking spaces and the parked vehicles in the parking spaces, wherein each sample image comprises a synchronous full-color image and an infrared thermal image.

S62: and taking the infrared thermal images of the frames or the fusion characteristic images of the corresponding frames as sample images, sequentially inputting the sample images into a fire recognition network based on machine learning, and predicting the fire early warning level of the vehicle in each sample image.

And fusing the characteristic image, namely fusing the full-color image and the infrared thermal image of the corresponding frame according to a preset rule to obtain the characteristic image.

S63: when the fire early warning level of the vehicle in any sample image is larger than a preset early warning range, inputting the full-color image in the corresponding sample image into a character recognition model based on an artificial neural network, and recognizing the parking space number of the corresponding current parking space in the image and/or the vehicle license plate of the parked vehicle.

S64: and acquiring a near parking space list corresponding to the current parking space according to the parking space number of the current parking space, and updating the near parking space according to the parking space occupation state. And then all parking spaces contained in the current parking space and the updated adjacent parking space list are used as target parking spaces.

S7: and inquiring the executor installation region comparison table by using the parking space number of each target parking space so as to obtain equipment identification codes of the vehicle fire protection device and the spraying device on each target parking space.

S8: issuing a control instruction to the corresponding vehicle fire protection device and the spraying device according to the equipment identification code, and respectively executing the following fire protection strategies on the current parking space and the adjacent parking space:

(1) And for the current parking space in the fire early warning state, starting a vehicle fireproof device on the parking space, releasing a fire blanket and covering the automobile below. And then starting a foam spraying mode in the spraying device, and spraying a foam extinguishing agent to the lower part of the parking space until the fire early warning state is relieved.

(2) To the adjacent parking space of the current parking space, the vehicle fireproof device on the parking space is started firstly, and a fire blanket is released to cover the automobile below. And then starting a water spraying mode in the spraying device, and spraying fire-fighting water below the parking space until the fire early warning state is relieved.

Compared with the prior art, the vehicle fire prevention control method of the underground garage disclosed by the invention has the following beneficial effects:

the fire control method provided by the invention integrates the advanced technologies such as a Geographic Information System (GIS) technology, a sensor technology, an image recognition technology, a machine learning technology and the like, so as to realize full-automatic control on the garage fire control system. By using the method of the invention, the garage manager can give the fire control authority of the garage to the console for automatic execution. And further, all-weather uninterrupted monitoring is realized, the capability of the system for discovering fire is improved, the response time of the system for the fire is shortened, the early discovery and early disposal of the hidden fire danger are realized, and the fire disaster is prevented.

After the control method and the corresponding fire control system provided by the invention are applied, the cost of operators for garage management can be greatly reduced, and the management efficiency is improved. Meanwhile, personal injury to managers in the fire fighting treatment process is completely eliminated. Therefore, the method has outstanding popularization and application values.

Drawings

Fig. 1 is a schematic structural view of an automatic parking space fire protection device based on a fire blanket according to embodiment 1 of the present invention;

fig. 2 is an assembly view of the parking space automatic fire-proof device of embodiment 1 installed under an outdoor parking space sunshade.

FIG. 3 is a schematic view showing the assembly of the pull ring and the fire blanket in example 1,

Fig. 4 is a schematic structural view of the storage mechanism in embodiment 1.

Fig. 5 is a partial enlarged view of the release mechanism of portion a in fig. 2.

Fig. 6 is a schematic structural view of the parking space automatic fire protection device with the position sensor in embodiment 1.

Fig. 7 is a schematic cross-sectional view of a four-layer fire blanket according to example 1.

Fig. 8 is a schematic cross-sectional view of the five-layer fire blanket of example 1.

Fig. 9 is a schematic structural view of the parking space automatic fire protection device with the tow bar and the stop collar in embodiment 3.

Fig. 10 is a schematic structural view of a stop collar according to embodiment 3.

Fig. 11 is a system architecture diagram of a fire monitoring and active protection system provided in example 4.

Fig. 12 is a control flow diagram of the console and other functional modules in the implementation of fire detection and prevention tasks in embodiment 4.

Fig. 13 is a schematic block structure diagram of an image recognition module in embodiment 4.

Fig. 14 is a distribution diagram of the determination results of the adjacent parking spaces in the aisle state in embodiment 4.

Fig. 15 is a distribution diagram of the determination results of the adjacent parking spaces in the wall-included state in embodiment 4.

Fig. 16 is a distribution diagram of the determination results of the adjacent vehicle spaces in the empty vehicle space state in embodiment 4.

Fig. 17 is a system configuration diagram of a fire monitoring and active protection system in which an alarm module and a display module are added according to embodiment 5.

Fig. 18 is a flowchart illustrating steps of a method for controlling fire protection for vehicles in an underground garage, as provided in embodiment 6.

Fig. 19 is a flowchart of a procedure for obtaining a feature-enhanced image based on fusion of a full-color image and an infrared thermal image in example 6.

Labeled in the figure as:

1. a fire blanket; 2. a support frame; 3. a pull ring; 4. a storage mechanism; 5. a release mechanism; 6. a position sensor; 11. a flame retardant layer; 12. a heat insulating layer; 13. a shielding layer; 21. a draw bar; 22. a limiting ring; 41. a storage box; 42. a take-up roll; 43. a one-way bearing; 44. a hauling rope; 51. a rope rolling roller; 52. a rotating shaft; 61. a Hall element; 62. a location tag; 411. a through groove; 412. and a through hole.

Detailed Description

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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

Example 1

The embodiment provides an automatic fire protection device in parking stall based on fire blanket 1. The automatic parking space fire protection device comprises a rectangular fire blanket 1. As shown in fig. 1, the automatic fire protection device for parking space provided by this embodiment further includes: the fire alarm device comprises a support frame 2, a pull ring 3, a receiving mechanism 4, a releasing mechanism 5, a position sensor 6, a fire sensing device and a controller.

The technical scheme provided by the embodiment is that a device which can unfold and release the fire blanket 1 is arranged on the top structure of the parking space. Therefore, when the parking space below the vehicle is in fire hazard or is burnt, the fire blanket 1 can be unfolded and automatically covered on the vehicle body to completely cover the vehicle, and the effect of extinguishing fire or preventing the fire from spreading outwards is achieved. The specific applications can be roughly divided into two types: 1. fire extinguishing effect: when the vehicle below the vehicle space catches fire, the vehicle is covered, and the condition that the fire of the vehicle is increased to ignite other vehicles is avoided. 2. Fireproof effect: when the vehicle of other people catches fire, the vehicle on the vehicle position is completely covered, and the condition that the vehicle of the user is ignited by the vehicle of other people is avoided.

For convenience of description, the extension direction of the larger length side of the fire blanket 1 is defined as the length direction, and the other side is defined as the width direction.

Wherein, the support frame 2 in this embodiment is fixedly connected to a carport or a building at the top of the parking space. The mounting area of support frame 2 is just to the parking stall area of below, and support frame 2 is including the first fastener that is located locomotive department and the second fastener that is located the rear of a vehicle department. The first fastener and the second fastener are long-strip-shaped pieces which are arranged in parallel.

The support frame 2 in this embodiment is an installation hanging member, and in the application process, the equipment installer can fixedly install the support frame 2 on the top of the parking space through expansion bolts or other connecting members. Then other components in the automatic parking space fireproof device are respectively arranged at each installation position of the support frame 2. The supporting frame 2 is not a necessary component, and as shown in fig. 2, when the parking space is in a better installation environment, the components of the receiving mechanism 4 and the releasing mechanism 5 can also be directly installed on the top of the wall of the carport. I.e. without using the support frame 2 in this embodiment. In addition, in other more preferred embodiments, the supporting frame 2 and the first fastening member and the second fastening member therein may also be designed to be adjustable, for example, the first fastening member and the second fastening member may be adjustable in assembly distance and adjustable in transverse width; the ground height of the first fastener and the second fastener is adjustable, and the like. The advantage of adopting adjustable support frame 2 has improved the automatic firebreak device in parking stall to the adaptability of not using the installation environment in this embodiment. The automatic fire-proof device for the parking space can exert the best use efficiency under various environments.

The pull rings 3 are fixedly connected to the edges of the two sides of the fire blanket 1 along the length direction, and the pull rings 3 are made of fragile brittle materials. The number of the pull rings 3 on any side of the fire blanket 1 is at least two, and the structural size of each pull ring 3 on the same side is gradually reduced from one end to the other end. As shown in fig. 3, four pull rings 3 are used in the present embodiment, and are respectively located at four corners of the rectangular fire blanket 1. While the pull ring 3 near the front end of the fire blanket 1 (i.e. the side corresponding to the release mechanism 5) of the four pull rings 3 is smaller in size.

The pull ring 3 adopted in this embodiment may be made of any one of glass, ceramic, or organic polymer material. In this example, the required tab 3 was made of polycarbonate, and the structural strength of the polycarbonate tab 3 satisfied: under the condition of real long service life, the pull ring 3 can keep stable structure, but when the impact action or the compressive stress of the pull ring 3 is larger than a preset action force threshold value, the pull ring 3 can be broken.

The receiving mechanism 4 in this embodiment is suspended below the first fastener in the support frame 2. The storage mechanism 4 includes a storage box 41, a storage roll 42, a one-way bearing 43, and two pull ropes 44. As shown in fig. 4, the receiving box 41 has a long strip shape, and the length of the receiving box 41 matches with the width of the fire blanket. The surface of the storage box 41 close to one side of the second fastener is provided with a through groove 411 with the same width as the fire blanket 1. Through holes 412 are formed in two ends of the through groove 411, and the aperture of each through hole 412 is larger than the pull ring 3 with the smallest size and smaller than the pull ring 3 with the largest size. The take-up roller 42 is located in a cavity inside the take-up box 41, and both ends of the take-up reel are detachably connected with the side wall of the take-up box 41 through one-way bearings 43. One end of each of the two pull cords 44 is fixed to the opposite end of the surface of the take-up reel. The fire blankets 1 are unfolded and connected end to end in sequence, and are fixedly connected to two hauling ropes 44 through the pull rings 3. The combination of the hauling rope 44, the pull ring 3 and the fire blanket 1 is wound on the surface of the storage reel to realize storage.

In normal use, the fire blanket 1 is normally stored with the pull cord 44 in the internal cavity of the storage mechanism 4 and wound tightly around the storage reel. If necessary, the fire blanket 1 can be drawn out from the through groove 411 at one side of the storage case 41 by the pulling rope 44. The fire blanket 1 in this embodiment is a disposable product and is not recycled after use. Therefore, the rotation direction of the storage reel is limited by a one-way bearing 43 in this embodiment, which ensures that the storage reel can only rotate in the direction of releasing the fire blanket 1 during use.

The release mechanism 5 in this embodiment is hoisted below the second fastening in the support frame 2. As shown in fig. 5, the release mechanism 5 includes a motor, a rotating shaft 52 and two rope winding rollers 51, the two rope winding rollers 51 are connected to the same rotating shaft 52, and the rotating shaft 52 is connected to an output shaft of the motor through a bushing. The other end of the pulling rope 44 in the storage mechanism 4 is connected to each of the rope winding rollers 51. The motor rotates through the drive rope-rolling roller 51 and then winds the pulling rope 44, so that the combined body formed by the pulling rope 44, the pull ring 3 and the fire blanket 1 is drawn out from the through groove 411 and the through hole 412 of the storage box 41.

The position sensor 6 is installed on the supporting frame 2, and the position sensor 6 is used for generating a sensing signal when detecting that any one of the fire blankets 1 reaches a preset position. The position sensor 6 is used for judging whether the fire blanket 1 in the storage box 41 is completely unfolded and reaches a preset position (the preset position is a position right above the vehicle and can completely wrap the vehicle below) in the unfolding process of the fire blanket 1. During the application process, the detection result of the position sensor 6 can be realized by using various sensors and detection methods, such as: the opposite type photoelectric sensors are installed at the farthest positions when the fire blanket 1 is unfolded, and the transmitters and the receivers of the photoelectric sensors are respectively located at both sides of the fire blanket 1. When fire blanket 1 is not fully deployed, the receiver of the photosensor may receive the light signal from the transmitter. When the fire blanket 1 is completely unfolded, the far end of the fire blanket 1 just shields the light path of the photoelectric sensor, and when the light signal cannot be received, the photoelectric sensor can determine whether the fire blanket 1 approaches according to the change state of the light signal.

In the present embodiment, for reasons of cost and durability, a photoelectric sensor is not used, and a hall sensor is used as the position sensor 6 in the present embodiment. Specifically, as shown in fig. 6, in the present embodiment, a hall element 61 is installed at a specific position of the top support frame 2 as an inductor. A magnetic position tag 62 is then attached to each fire blanket 1 at a particular location (i.e., the forward-most end). The mounting position of the position tag 62 satisfies: when fire blanket 1 is stretched by pull cord 44 to a fully deployed state, position tag 62 coincides with the position of hall element 61. Thus, hall element 61 generates the desired position sensing signal whenever blanket 1 is fully deployed to a usable condition.

The fire sensing device is used for automatically generating a fire early warning signal when a fire occurs in the vehicle based on any one or more collected physical signals.

The effect of the fire sensing device of this embodiment installation is the condition of a fire near in time discovering the parking stall, and then produces a conflagration early warning signal, and the automatic firebreak device in parking stall of being convenient for makes the decision according to conflagration early warning signal, and release fire blanket 1 prevents fires or puts out a fire. In particular, the detection method and principle of the fire sensing device are not limited in the embodiments. The present embodiment is not limited to the method of analyzing the conclusion as long as a reliable fire sensing signal can be generated. For example, in the existing market, there are existing systems based on the use of a sensor including a smoke sensor, a temperature sensor, a light intensity sensor, and for detecting VOCs, CO and H ₂ A fire early warning system of various sensors such as a concentration gas sensor and the like. Even online monitoring techniques based on video surveillance equipment and neural network identification may be employed.

Particularly, if the property management side considers that the reliability of the automatic monitoring result is insufficient, misoperation is easy to occur, and then the person is selected to watch the parking space for 24H, the fire state of each parking space is monitored in real time, and a fire early warning signal for releasing the fire blanket is sent to the automatic parking space fire protection device by a patrol manager in a remote way if necessary, which is also feasible and still not beyond the protection range limited by the technical scheme of the invention. This shows that the automatic parking space fire protection device in the embodiment scheme can also directly adopt a fire signal acquisition device without a fire sensing device; the device collects fire early warning signals sent by other equipment, even manually, and forwards the fire early warning signals to the controller.

Specifically, in the present embodiment, the driving motor, the position sensor 6 and the fire sensing device are electrically connected through one PLC controller. The controller is used for driving the motor to rotate when receiving the fire early warning signal and driving the motor to stop rotating after receiving the induction signal.

As shown in the figure, the automatic parking space fire protection device in this embodiment is used substantially as follows: when the fire sensing device sends an early warning state representing that the fire disaster happens in the current area to the controller, the controller immediately drives the motor to rotate in the forward direction. When the motor rotates, the two pulling ropes 44 are respectively wound on the rope winding roller 51, the rope winding roller continuously winds the pulling ropes 44, and the fire blanket 1 is drawn out from the storage box 41. In the fire extinguishing carbon extracting process, the two pull rings 3 near the front side first pass through the through holes 412 to reach the outside of the storage box 41. When the motor rotates, the fire blanket 1 is pulled by the pulling rope 44 to move forward continuously, and finally reaches the position where the fire blanket 1 is put right above the vehicle. At this time, the two pull rings 3 at the front of the fire blanket 1 are wound on the rope roller 51 and crushed by the extrusion, and the two pull rings 3 at the rear are crushed by colliding with the inner wall of the storage box 41 in the drawing process of the pulling rope 44 because they cannot pass through the through hole 412. At this time, the pull cord 44 cannot fix the fire blanket 1, and the fire blanket 1 freely falls and covers the vehicle. Namely, the fire blanket 1 is automatically released. In addition, when the fire blanket 1 reaches the release position, the position sensor 6 device also detects a corresponding signal and sends a position sensing signal to the controller, and the controller controls the motor to stop rotating after receiving the position sensing signal; and thus does not continue to wind the pull cord 44 when the fire blanket 1 is completely released.

The periphery of the fire blanket 1 is provided with a plurality of pendants distributed at equal intervals. The density of the falling object is greater than the material density of the fire blanket 1; the falling object adopts stone blocks or metal blocks; the drop is sewn to the inside of the material on the edge of the fire blanket 1. This embodiment is add around fire blanket 1 after the heavy object, and the fire blanket 1 free fall process can accurately fall around the vehicle, and then avoids taking place because receive the air current influence (the scene of a fire often has unstable horizontal vortex because temperature distribution is uneven) and causes the condition of the preset placement of fire blanket 1 skew. In particular, in order to avoid the falling objects from damaging the vehicle below, the falling objects in this embodiment are only distributed in the axial area of the fire blanket 1. In particular, the falling object in this embodiment may further wrap rubber, buffer foam, etc., and then be sewn to the edge of the fire blanket 1, thereby reducing the damage that the falling process of the fire blanket 1 may cause to the vehicle paint surface. Of course, the location of the fire blanket 1 is low enough during installation to reduce the impact of falling objects to some extent.

In order to improve the fire-extinguishing and fire-preventing performance of the fire blanket 1, the fire blanket 1 in this embodiment adopts a multi-layer laminated structure, wherein the fire blanket 1 at least comprises a fire-retardant layer 11, a heat-insulating layer 12 and a shielding layer 13 in its structural layers.

Specifically, in the present embodiment, the structural layer of the fire blanket 1 for isolating self-fire is shown in fig. 7, and the heat insulating layer 12 and the flame retardant layer 11 are laminated to form the inner core of the fire blanket 1; the flame-retardant layer 11 is completely coated on the outer layer of the inner core. From a cross-sectional view: fire blanket 1 includes from last to down in proper order: a flame-retardant layer 11, a shielding layer 13, a heat-insulating layer 12 and a flame-retardant layer 11; has a four-layer structure. In addition, the structural layer for fire-fighting with the purpose of fire prevention can also use the shielding layer 13 as an inner core, then completely coat the periphery of the shielding layer 13 with the heat-insulating layer 12 as a first sheath, and then completely coat the outside of the shielding layer 13 with the flame-retardant layer 11 as a second sheath. As shown in fig. 8, the whole fire blanket 1 includes a five-layer structure as viewed from the cross section, and includes a fire-retardant layer 11, a heat-insulating layer 12, a shielding layer 13, a heat-insulating layer 12, and a fire-retardant layer 11 in sequence from top to bottom.

The flame-retardant layer 11 is woven by using refractory fibers such as aluminum silicate, and as the name suggests, the purpose of the flame-retardant layer 11 is to isolate combustion. The heat insulating layer 12 is made of a foaming material added with a flame retardant, such as high temperature resistant phenolic resin foam. The insulating layer 12 blocks heat conduction during fire extinguishing or preventing processes, thereby reducing the propagation rate of fire. The shielding layer 13 is made of foil rolled by metal or alloy. The shielding layer 13 is used for isolating the concentration of combustion improver such as oxygen near the vehicle in the combustion process, and further weakening the fire. The shielding layer 13 may be made of aluminum foil or stainless steel film. In particular, the foil in blanket 1 should be centered between the structural layers, and the other structural layers provide protection against foil rupture during use.

Example 2

The embodiment provides an automatic firebreak device in parking stall based on fire blanket 1, and the difference of this embodiment and embodiment 1 lies in:

in this embodiment, the pulling rope 44 is provided with a plurality of open-close buckles at equal intervals, and each pulling ring 3 fixedly connected to the fire blanket 1 is detachably connected to the pulling rope 44 through the buckles.

The embodiment adopts the openable and closable snap connection pull ring 3 and the traction rope 44. The assembly of the pull cord 44 and fire blanket 1 during the assembly process of the equipment and the winding of the fire blanket onto the take-up reel 42 can be facilitated. Meanwhile, the fire blanket 1 and the pull ring 3 are consumables in the automatic parking space fireproof device, and other components are reusable durable parts. Therefore, the pulling rope 44 can be recycled at the later stage by using the detachable buckle connection, and the fire blanket 1 is reassembled; the use cost of the whole equipment is reduced.

In the original scheme design provided in example 1, the fire blanket 1 is not recycled. The structural stability of the fire blanket 1 after use may have failed (e.g., the shielding layer 13 is broken, the insulating layer is damaged, etc.), and the fire-fighting performance consistent with that of the brand-new fire blanket 1 cannot be achieved. Thus. If the fire blanket 1 in the storage mechanism 4 is exhausted, the storage device on the support frame 2 or the storage roller 42 wound with the fire blanket 1 and the traction rope 44 needs to be replaced as a whole. Of course, the reason why the unidirectional bearings 43 are installed at the two ends of the storage roll 42 in the embodiment 1 to improve the stability of the operation process of the device and prevent the storage roll 42 from reversely rotating is not to be used again in the fire blanket 1.

However, in the practical application process, the fire blanket 1 with the fireproof effect (not isolating combustion, but only preventing the fire in other parking spaces from spreading to the own parking space) still has the recycling value. The snap-in connection of this embodiment may facilitate recycling of the fire blanket 1.

In order to facilitate replacement of the storage roll 42 and the fire blanket 1, the storage box 41 in this embodiment is also designed to be openable and closable. Specifically, the front cover provided with the through-groove 411 and the through-hole 412 in the housing case 41 is designed to be detachable.

In this embodiment, in order to improve the operability of the recycling or maintenance process of the fire blanket 1, another auxiliary motor may be further installed on the winding roller, and the auxiliary motor and the motor in the prior art drive the storage roller 42 and the rope roller 51 to rotate synchronously, and after the two motors are adopted, both the storage roller 42 and the rope roller 51 can perform the forward and backward rotation. In addition, a remote controller for controlling the rotation of the two motors can be arranged in the equipment. At this time, the maintainer of the equipment manufacturer can firstly remove the detachable front cover of the storage box 41, then sequentially install new fire blanket 1 on the traction rope 44, finally reversely rotate the driving motor to wind the fire blanket 1 on the storage roller 42, and then complete the refilling of the fire blanket 1. In this design, the storage mechanism 4 does not need to be removed from the support frame 2 and replaced during maintenance.

The rope winding roller 51 in this embodiment is a spool that can wind a wire. The two rope-rolling rollers 51 in the release mechanism 5 are coaxially connected through a rotating shaft 52, and the motor is directly connected with the rotating shaft 52 through a shaft or in transmission connection through a gear mechanism or a chain wheel mechanism. The motor synchronously drives the two rope rolling rollers 51 to synchronously rotate.

Example 3

The embodiment provides an automatic firebreak device in parking stall based on fire blanket 1, and the difference of this embodiment and

embodiment

1 or 2 lies in:

in this embodiment, as shown in fig. 9, the supporting frame 2 further includes two pulling rods 21, the two pulling rods 21 are respectively and fixedly connected to two sides of the first fastening member and the second fastening member, and the four pulling rods form a rectangular structure. A plurality of limiting rings 22 are arranged on one side of the inner side of each of the two traction rods 21 at equal intervals; as shown in FIG. 10, the limiting ring 22 is C-shaped, and an opening is formed at one side of the limiting ring 22 close to the inside, and the width of the opening is matched with the thickness of the fire blanket 1 and is narrower than the diameter of the traction rope 44.

The hauling rope 44 runs through and inside the retaining ring 22, and the fire blanket 1 connected to the hauling rope 44 just runs through the opening in the retaining ring 22. The installation interval of each limit ring 22 on the traction rod 21 is matched with the interval of each pull ring 3 connected on the fire blanket 1, and the diameter of each limit ring 22 is sequentially increased from the head end to the tail end of the fire blanket 1; and when the fire blanket 1 is completely unfolded, each pull ring 3 just can not pass through the limit ring 22 at the corresponding position.

Overall, the improvement points of the present embodiment are: the four corners of the fire blanket 1 and the hauling rope 44 in the original scheme are fixed and improved to be connected at multiple points along the direction of the hauling rope 44. Thus, if the size of the fire blanket 1 is too large, the pull cord 44 still provides good fastening and pulling effect. The center of the fire blanket 1 is prevented from being in a pendant state. Meanwhile, in order to ensure that a plurality of pull rings 3 can be broken when the fire blanket 1 is moved to a target position, the embodiment is also provided with the structure of the pull rod 21 and the limiting ring 22. Thus, each pull ring 3 can pass through other limiting rings 22 to reach a target position, and is blocked by the corresponding limiting ring 22 and synchronously detonated when reaching the target position. In particular, in order to avoid the interference of the limiting ring 22 on the movement track of the fire blanket 1, the embodiment particularly adopts a C-shaped limiting ring 22 having an opening, and the opening of the limiting ring 22 is used for the fire blanket 1 to pass through.

The following are specifically mentioned: the specific structure of the pull ring 3 is not limited in this embodiment and the foregoing embodiments, and it is only necessary that the design target of spontaneous explosion in a specific state can be satisfied. Therefore, the pull ring 3 can be in any structure such as a circular ring, a square ring and the like, and the passing capacity of each pull ring 3 at different positions is limited by the size. On the premise of the design target, the pull ring 3 may be a straight rod or a V-shaped pull ring, which does not affect the feasibility of the technical solution of the embodiment.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

Example 4

The embodiment provides a fire monitoring and initiative protection system for underground garage, and this system is used for monitoring the fire control state in the underground garage to in time deal with when the conflagration hidden danger appears. As shown in fig. 11, the fire monitoring and active prevention system includes: fire sensing device, monitoring device, vehicle fire prevention device, spray set to and the control cabinet. The underground for garage fire monitoring and initiative protection system ground essential function that this embodiment provided is the conflagration risk of control land car garage to fix a position the parking stall when discovering conflagration hidden danger, then directional release blanket of putting out a fire, and open fire sprinkler, with fire loss control in minimum range. The safety of the vehicle is guaranteed.

The fire sensing device comprises one or more of a smoke sensor, a temperature sensor and a fire characteristic gas concentration sensor. Fire sensing device distributing type is installed in underground garage each department, and every fire sensing device is responsible for a specific detection area, and fire sensing device's detection area contains whole underground garage.

The fire sensing device in this implementation can adopt the comparatively ripe fire control sensor product of technique in the existing market, and the dominant use of this type of product is when the conflagration takes place or before the conflagration takes place, in time detects corresponding sensing signal to send the early warning at managers or fire extinguishing system, and then realize miscellaneous conflagration and take place initial stage in time reply, deal with as early as possible, in order to reduce life and loss of property that the conflagration caused in phase.

The conventional fire fighting sensors on the market today are of many types, including smoke sensors, fire fighting sensors based on detection signals of sound, light, temperature, etc., and fire fighting sensors based on characteristic gas concentrations, etc. The fire sensing device adopted in the embodiment can adopt one or more sensors to improve the sensitivity and enhance the sensing performance of the sensors on early fire. It should be noted that: when the scheme of the sensor group is adopted, aiming at the same area, the number and the installation positions of the sensors of different types can be reasonably installed and applied according to the embroidered ball of a specific application scene.

The monitoring device in this embodiment employs a dual-channel camera with visible light imaging and infrared thermal imaging functions. The camera is mounted on the PTZ stage. The quantity of monitoring devices is a plurality of and the distributing type is installed in underground garage each department, and under PTZ cloud platform regulatory state, all monitoring devices's monitoring area contains all parking stalls in whole underground garage.

The purpose of using the camera with the PTZ cloud platform in this embodiment is to carry out dynamic monitoring to the garage inside. The camera has the functions of fire safety, theft prevention and the like. Specifically, in a conventional state, the PTZ control camera operates according to preset camera PTZ parameters according to the distribution of the installation position of the PTZ control camera, and only the natural light imaging function of the camera is started. At the moment, the camera can keep the function of performing static monitoring on a key area in the garage, and meanwhile, when a preset patrol period arrives, the camera adjusts the PTZ parameter according to an instruction, so that the function of performing comprehensive patrol on the inside of the garage is realized. Particularly, when the fire sensing device detects that fire early warning occurs in the garage, the camera can simultaneously start the natural light imaging and thermal imaging functions, and carry out tracking monitoring on the area where the fire occurs, so that a data base is laid for timely analyzing the fire condition and accurately executing a fire fighting decision.

The vehicle fire-proof device is installed on the top of each parking space. The vehicle fire protection device in this embodiment adopts the automatic parking space fire protection device based on the fire blanket in any one of embodiments 1 to 3. The vehicle fire protection devices installed on each parking space respectively comprise a plurality of fire blankets, and any vehicle fire protection device immediately executes a corresponding fire prevention or fire extinguishing decision after receiving a fire early warning signal, so that one of the fire blankets is automatically unfolded and covered over the vehicle. Details regarding the structure, installation requirements, functional principles, etc. of the vehicle fire protection device are not described in detail in this embodiment.

The spraying device in the embodiment comprises single-control spray heads arranged at the tops of all parking stalls, and the single-control spray heads are communicated with a fire-fighting spray pipeline. The fire-fighting spraying pipeline in the embodiment is a double-channel pipeline, wherein water of fire-fighting extinguishing medium conveyed in one pipeline is used, and the fire-fighting extinguishing medium conveyed in the other pipeline is foam. The foam extinguishing agent in the embodiment can be any one of chemical foam, common protein foam, various anti-solvent air foams or flame-retardant foams generated by high-expansion foaming liquid. Therefore, the single-control spray head in the embodiment has two functions of foam spraying and water spraying in practical application, and the two functions are respectively used for fire fighting and vehicle fire prevention.

The console in this embodiment is a data processing center of the entire system, and is also a management center of the rest of the devices in the entire system. All the devices work coordinately under the control of the console to play a fire fighting role. Specifically, in the system provided in this embodiment, the server of the console includes a signal acquisition module, a coordinate query module, a dynamic monitoring module, an image recognition module, and an execution module.

With reference to the above functional modules, the processing procedure executed by the console in this embodiment when implementing the fire early warning and fire prevention functions is substantially as shown in fig. 12, and includes the following procedures:

first, the signal acquisition module is used for acquiring detection signals of the fire sensing device and generating a fire characteristic signal after any path of detection signals exceeds a preset safety threshold.

Then, a coordinate query module queries a preset 'sensor installation location comparison table' according to the equipment identification number corresponding to the sensor of the generated fire characteristic signal, and further acquires the installation coordinate of the sensor.

And then, the dynamic monitoring module adjusts the PTZ parameters of the PTZ holder according to the acquired installation coordinates, so that the dual-channel camera can accurately acquire real-time monitoring videos of all vehicles in the area containing the dangerous case, and the data of the real-time monitoring videos comprise infrared thermal image stream data and full-color video stream data.

The video stream data acquired by the two-channel camera is transmitted to the image identification module. The image recognition module comprises a preprocessing unit, a fire recognition unit and a license plate recognition unit. The preprocessing unit is used for converting the real-time monitoring video into a thermal image and a full-color image frame by frame and processing the thermal image and the full-color image to obtain a fusion characteristic diagram containing color characteristics and thermal distribution characteristics. The fire identification unit is used for predicting whether each vehicle has fire risks according to the fusion feature diagram. And the license plate recognition unit is used for recognizing the license plate or the parking space number of the current parking space according to the corresponding full-color image when any vehicle is predicted to have the fire risk.

After the vehicle with the fire risk is photographed or the parking space number is determined, the coordinate query module acquires the parking space number of the adjacent parking space according to the vehicle license plate or the parking space number of the current parking space, and then queries a preset actuator installation position comparison table according to the parking space number so as to determine the equipment identification numbers of the current parking space, the vehicle fireproof device and the spraying device of the adjacent parking space.

The execution module is used for issuing a device control instruction to the vehicle fireproof device and the spraying device, controlling the vehicle fireproof device of the current parking space and the adjacent parking space to operate, releasing the fire blanket and covering the vehicle below. And then controlling the single control spray head of the current parking space to operate in a foam spraying mode after the fire blanket is released, and controlling the single control spray head of the adjacent parking space to operate in a water spraying mode.

As shown in fig. 13, the image recognition module provided in this embodiment further includes a vehicle recognition unit, and the vehicle recognition unit is configured to recognize and extract a portion of the vehicle region included in the full-color image, so as to obtain a vehicle image. The vehicle image is used as an input of a license plate recognition unit. The vehicle identification unit, the fire identification unit and the license plate identification unit in the image identification module are all neural network models which are designed based on a machine learning algorithm and trained by a large number of real image samples. The vehicle identification unit is a typical image identification tool, and the license plate identification unit has a very mature solution in the field of traffic management. Therefore, in this embodiment, details regarding the optimization and training of the neural network model are not repeated in this embodiment.

In this embodiment, underground for garage fire monitoring and initiative protection system's deployment and installation need professional technical staff to accomplish after surveying and mapping on the spot, the installation will guarantee: 1. fire sensing device and monitoring device need rationally distributed in whole garage, and then guarantee that all parking stalls all are located the management scope of one of them group's equipment at least. After the equipment deployment is completed, a partition list in the garage can be obtained, and each partition list records an equipment identification number of the fire sensing device responsible for the corresponding area, namely a sensor installation area comparison table. The partition corresponding to the sensor generating the fire early warning signal can be obtained by utilizing the table.

Accordingly, in this embodiment, a set of vehicle fire protection device and spraying device is installed above each parking space, so that after the installation of the equipment is completed, a mapping relationship between a parking space number (or a vehicle license plate on a corresponding fixed parking space) of each parking space and the vehicle fire protection device and spraying can be obtained, and a comparison table representing the mapping relationship is an "actuator installation location comparison table". After a control console locks a certain parking space and has fire hazard or fire, equipment identification numbers of corresponding vehicle fire protection devices and spraying devices can be obtained by inquiring the comparison table of the installation area of the actuator, and then corresponding fire safety protection measures can be accurately executed by issuing control instructions to the devices corresponding to the equipment identification numbers.

In the embodiment, different fire safety and fire prevention measures are implemented according to different types of fire. For example: when the system identifies that a certain vehicle has a fire or is likely to have a fire, the fire is blocked by firstly covering the vehicle with the fire blanket through the vehicle fire protection device. Then a large amount of fire fighting foam is sprayed onto the fire blanket. The foam fire extinguishing agents can be tightly covered on the vehicle and the fire blanket, so that the barrier effect of the fire blanket on the vehicle is improved, and the fire extinguishing effect is enhanced. Meanwhile, to a certain extent, when the vehicle only has the fire risk but not has the fire, the fire blanket is covered firstly, and then the foam extinguishing agent is sprayed, so that the corrosion or the contamination of the paint surface or other structures of the vehicle caused by the foam can be avoided. In this embodiment, the simultaneous use of the fire blanket and the foam extinguishing agent provides a good synergistic effect, improves the fire extinguishing performance and reduces the additional negative effects of the fire extinguishing process.

In addition, when there is the risk that is ignited by the vehicle that closes on of getting on a fire in a certain parking stall, control releases the fire blanket earlier and then sprays the fire-fighting water, and the fire blanket can wrap up the vehicle, plays first fireproof barrier's effect. And then spraying fire-fighting water on the fire blanket, wherein the water mist or water splash can form a water film on the surface of the fire blanket, and the water film is used as a second fire barrier. It should be noted that, in this embodiment, the operation of spraying the fire-fighting water after covering the fire blanket first can also prevent water vapor from entering the vehicle interior below, and avoid the protective measures from causing other collateral damages such as water inflow and water soaking to the normal vehicle.

The underground is fire monitoring and initiative protection system for garage that this embodiment provided not only will control the vehicle in the parking stall on fire when carrying out fire control fire prevention strategy, still will protect other parking stalls that the vehicle that should close to with on fire, avoids these vehicles to be ignited by the vehicle on fire. In order to perform linkage control on the fire safety devices in different parking spaces, the server of the console stores an "adjacent parking space comparison table" associated with each parking space. The parking spaces close to each other, which need to be subjected to fire prevention control, corresponding to the parking space where each vehicle on fire is located can be inquired through the parking space close comparison table.

In this embodiment, the adjacent parking spaces refer to one or two adjacent parking spaces around the current vehicle. (it is adjacent one or two parking stalls to specifically will close on the parking stall definition, can be by the garage management side according to fire-fighting class or protection requirement carry out reasonable settlement.) in addition, this embodiment is still optimized and is adjusted the discernment location of closing on the parking stall according to particular case to reach the equilibrium between fire behavior and economic nature.

The following describes the method for determining the optimized adjacent parking space in detail with reference to fig. 14 to 16, where a indicates the current parking space in a fire, and B indicates the adjacent parking space of the parking space a.

As shown in fig. 14, when the adjacent position of a current parking space is an aisle, it is determined that the adjacent parking space further includes an opposite parking space separated from the current parking space by the aisle. The reason for this adjustment is that when a fire breaks out in a vehicle, the fire is likely to cross the aisle and affect the vehicles on the opposite side of the aisle.

As shown in fig. 15, when the adjacent position in any direction of the current parking space is an entity wall, it is determined that there is no adjacent parking space in the position of the current parking space. The reason for this adjustment is that: when a certain vehicle is on fire, the fire often cannot penetrate through the wall to affect the adjacent parking space.

As shown in fig. 16, particularly, when the console queries the list of all adjacent parking spaces corresponding to the current parking space, it further determines, through the monitoring device and the vehicle identification unit, whether a vehicle is parked in each adjacent parking space, and when no vehicle is parked in any adjacent parking space, the parking space is deleted from the list of adjacent parking spaces, and/or a further outer parking space is supplemented as an adjacent parking space. The reason for this adjustment is: when a certain vehicle is on fire, if the vehicle is not parked near the parking space, the fire prevention measure is not required to be executed, and meanwhile, because the vehicle is not parked at the parking space, the vehicle on the parking space which is further outside loses the barrier, so that the risk of being ignited exists, and at the moment, the fire prevention measure is required to be executed on the vehicle near the empty parking space at an interval.

Example 5

This embodiment provides a fire monitoring and initiative protection system for underground garage, this implementation is compared with embodiment 4, and the improvement point lies in: as shown in fig. 17, the fire monitoring and active protection system provided in this embodiment further includes an alarm module. The alarm module is in communication connection with the console and comprises a plurality of zone alarms located in different zones of the garage site and a central alarm located on one side of the console. As with fire sensing devices and the like, each zone alarm in this embodiment is also dedicated to a particular zone.

When the console detects that any area in the garage has fire risks (indicating that a fire characteristic signal is generated), the central alarm and the area alarms in charge of the corresponding areas are driven to work simultaneously. The central alarm and the zone alarms issue alarms by means of ringing and strobing. After hearing the alarm, the manager of the garage should perform an on-site inspection to assist the automated fire monitoring and active protection system in executing various fire-fighting decisions. The safety factor of the garage is improved. For example, active disposal when the vehicle has not been on fire, but other equipment has a fire hazard, etc.

In order to ensure that the manager has to perform the on-site processing, the present embodiment sets the alarm state of the area alarms to be manually canceled by the on-site processing, and sets the alarm state of the center alarm to be automatically canceled only after the alarm states of all the area alarms are canceled.

The control console provided by the embodiment is also internally connected with a display module, the display module is used for displaying the real-time monitoring videos collected by all the monitoring modules, and the infrared thermal image stream data and the full-color video stream data in the real-time monitoring videos collected by each monitoring device are synchronously displayed in the same display module in a split screen mode.

The display module can provide real-time monitoring images of different areas inside the garage for management personnel. The manager can find other emergency states which can not be effectively identified by some systems by checking the monitoring video images and can timely deal with the emergency states; the manual detection of the manager can be used as an aid to various artificial intelligence algorithms in the system.

It is specifically noted that; the dual-channel camera of this embodiment only provides full-color video under normal condition, and when the inside arbitrary region of parking stall produced fire characteristic signal, the dual-channel camera (the quantity of the dual-channel camera that every region corresponds probably more than one, the state that a plurality of cameras can follow the scene of a fire of different angles) that is responsible for this region just switches into the state that two image channels are opened entirely. Simultaneously, full-color images and thermal images are provided, so that the fire can be found in time. And after the fire is processed (all the alarm modules are switched back to the normal state), the state of only opening the full-color image single channel is restored.

Because the 'intelligence' of the manager is always higher than the algorithm of the system, the management authority of the manager to the system is also improved. Particularly, the control console of the embodiment further comprises a manual instruction receiving module, and the manual instruction receiving module is used for receiving manual control instructions sent to the vehicle fire protection device and the spraying device in any parking space by managers. The priority of the manual control command is higher than that of the equipment control command issued by the console.

In the improved system, when a garage manager finds that a certain vehicle has a dangerous condition of fire in the patrol process but the condition is not recognized by the system, the garage manager can issue a manual control command to a manual command receiving module of a corresponding area (through a remote controller or other personal management terminals) to execute various fire-fighting and extinguishing strategies in time.

Example 6

The method for controlling fire prevention of vehicles in an underground garage provided by this embodiment is applied to the fire monitoring and active protection system (hereinafter referred to as fire protection system) for an underground garage as described in

embodiment

4 or 5. Briefly, a fire fighting system includes a fire sensing device, a monitoring device, a vehicle fire protection device, a sprinkler device, and a console. The underground garage is installed in a distributed mode through the fire sensing devices, each fire sensing device is responsible for a specific detection area, and the detection areas of all the fire sensing devices comprise the whole underground garage. The monitoring device adopts a double-channel camera with visible light imaging and infrared thermal imaging functions, and the camera is arranged on the PTZ holder. The quantity of monitoring devices is a plurality of and the distributing type is installed in underground garage each department, and under PTZ cloud platform regulation state, all monitoring devices's monitoring area contains all parking stalls in whole underground garage. The vehicle fire-proof device is arranged at the top of each parking space; the vehicle fire protection device comprises a plurality of fire blankets, and one of the fire blankets is automatically unfolded and covered over a vehicle after receiving an equipment control signal. The spraying device comprises a single-control spray head arranged at the top of each parking space, and the single-control spray head is communicated with the fire-fighting spraying pipeline; the single control spray head has a water spray mode and a foam spray mode. The control console is a control center of the fire fighting system.

As shown in fig. 18, the vehicle fire protection control method provided in this embodiment specifically includes the following steps:

The method for establishing the comparison table of the installation positions of the inductors comprises the following steps:

(1) The fire sensing devices are reasonably installed at different positions of the underground parking space according to the detection range of the sensors, so that the detection range of all the fire sensing devices covers the whole underground parking space.

(2) And dividing the underground garage into a plurality of subareas according to the detection range of each sensor, wherein each subarea is responsible for one of the fire sensing devices.

(3) Establishing a one-to-one mapping relation between the address coordinates of each subarea and the equipment identification number of the fire sensing device; the comparison table reflecting the mapping relation is the comparison table of the required sensor installation position.

After a certain fire sensing device generates a fire characteristic signal, the installation zone comparison table is inquired according to the equipment identification number of the fire sensing device, and the subarea with the fire early warning state can be obtained.

S2: and establishing an actuator installation zone comparison table, wherein a mapping relation between the parking space number of each parking space or the associated vehicle license plate and the equipment identification codes of the vehicle fire protection devices and the spraying devices installed on the corresponding parking spaces is established in the actuator installation zone comparison table.

The generation method of the comparison table of the actuator installation position comprises the following steps:

a first mapping relation is established between the equipment identification numbers of the vehicle fire protection devices and the spraying devices in each parking space. And then establishing a second mapping relation among the parking space number of each parking space, the corresponding vehicle fireproof device and the corresponding spraying device. And finally, inquiring whether each parking space is a fixed parking space or not, and establishing a third mapping relation between the parking space number of the parking space and the vehicle license plate of the associated vehicle for the fixed parking space. And the list representing the third mapping relation among the parking space numbers, the vehicle license plates, the vehicle fire protection devices and the spraying devices is an actuator mounting region comparison table.

The equipment identification numbers of the vehicle fire protection device and the spraying device corresponding to the parking space which should execute the fire protection strategy can be determined by inquiring the actuator installation position comparison table.

S3: according to a preset rule, a near parking space list is generated for each parking space in the underground garage, and the near parking space list contains parking space numbers of all parking spaces with spreading disaster risks when the parking spaces catch fire.

The adjacent parking space list comprises a static list and a dynamic list. The static list is automatically generated according to preset rules and the position layout of each parking space in the garage. The adjacent parking place list in the step is a static list.

The division rule of the adjacent parking spaces in the static list is as follows:

(1) All parking stalls around current parking stall are the parking stall that closes on of current parking stall.

(2) When one side of a certain current parking space is a passage, the parking space opposite to the passage at the interval of the current parking space is a parking space close to the current parking space.

(3) When one side of a certain current parking space is a wall, the current parking space has no adjacent parking space in the direction of the side.

S5: and determining the equipment identification code of the corresponding sensor according to the source of the generated fire characteristic signal, and then inquiring the sensor installation area comparison table to obtain the geographic coordinate of the parking space area generating the fire characteristic signal.

S6: and driving a PTZ holder in the monitoring device to rotate according to the geographic coordinates, and acquiring real-time monitoring videos of parking spaces near the geographic coordinates. The real-time monitoring image is acquired by a double-channel camera with infrared imaging and natural light imaging functions. The dual-channel camera only keeps the channel of natural imaging open in a conventional state; and after generating fire characteristic signals in any area in the garage, simultaneously starting the natural light imaging channel and the infrared imaging channel of the double-channel camera responsible for the corresponding area to acquire synchronous double-channel data. After the required data are collected, determining a target parking space which should execute a fire prevention strategy according to the real-time monitoring video; the method for selecting the target parking space comprises the following steps:

S62: and taking the infrared thermal images of the frames or the fusion characteristic images of the corresponding frames as sample images, sequentially inputting the sample images into a fire identification network based on machine learning, and predicting the fire early warning grade of the vehicle in each sample image.

In this step, the updated adjacent parking space list refers to a dynamic list. The dynamic list is a new list obtained by adjusting the static list by the fire fighting system according to the actual occupation state of the vehicle in each parking space when the fire fighting system executes a fire prevention decision.

The update rule of the dynamic list is as follows:

when the adjacent parking space of a certain current vehicle does not occupy the vehicle, the parking space is deleted from the list, and the parking space with the vehicle parked in a farther position in the corresponding direction is supplemented as the adjacent parking space.

In this embodiment, the fused feature image in step S62 is a feature enhanced image generated by an image fusion method based on YUV space color transfer, and as shown in fig. 19, the generation process is as follows:

(1) Firstly, color fusion is carried out on the full-color image and the infrared thermal image in a YUV space by adopting a linear combination method to obtain an initial source image.

(2) And then selecting a reference image with any color standard, converting the reference image from an RGB space to a YUV space, and transmitting the mean value and standard deviation of the YUV components of the reference image to the YUV components of the initial source image.

(3) And finally, converting the initial source image from a YUV space to an RGB space to obtain a feature-enhanced fusion feature image.

In step S63, the method for identifying the license plate or the parking space number is a relatively mature technology, and the specific processing procedure includes the following steps:

(1) Area positioning: and carrying out characteristic search on the collected full-color image to find a candidate area which accords with the characteristics of the license plate or the parking space number.

(2) Character segmentation: and adopting a vertical projection method to perform region segmentation on the selected license plate region or parking space number to obtain a plurality of continuous character images contained in the license plate or parking space number.

(3) Character recognition: performing feature recognition on each character image by adopting a template matching method or a trained artificial neural network, and extracting information of each character contained in each character image;

(4) Information synthesis: and recombining all the recognized characters according to the original image sequence to obtain the required vehicle license plate or parking space number.

In this embodiment, the fire fighting system further comprises an alarm module, and the alarm module is in communication connection with the console. The alarm module includes a plurality of zone alarms located in different zones of the garage site and a central alarm located on one side of the console. When the control console detects that any area in the garage generates a fire characteristic signal, the central alarm and the area alarm responsible for the corresponding area are driven to work simultaneously. The alarm state of the zone alarms is manually cleared only after the fire treatment is completed by manual field operation. The central alarm is automatically deactivated only when all zone alarms resume a silence state.

In step S8, the state of the release of the fire warning state is used as an index for controlling whether the parking space fire protection device and the spraying device are closed, and the state of the release of the fire warning state refers to a state of the central alarm recovering from the alarm state to the silent state.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A vehicle fire prevention control method of an underground garage is applied to a fire protection system comprising a fire sensing device, a monitoring device, a vehicle fire prevention device, a spraying device and a control console; the fire sensing devices are distributed and installed at all positions of the underground garage, each fire sensing device is responsible for a specific detection area, and the detection areas of all the fire sensing devices comprise the whole underground garage; the monitoring device adopts a double-channel camera with visible light imaging and infrared thermal imaging functions, and the camera is installed on a PTZ holder; the monitoring devices are distributed and installed at all places of the underground garage, and in the PTZ cloud deck adjusting state, the monitoring areas of all the monitoring devices comprise all parking places of the whole underground garage; the vehicle fireproof device is arranged at the top of each parking space; the vehicle fire protection device comprises a plurality of fire blankets, and one of the fire blankets is automatically unfolded and covered over a vehicle after receiving an equipment control signal; the spraying device comprises a single-control spray head arranged at the top of each parking space, and the single-control spray head is communicated with a fire-fighting spraying pipeline; the single-control spray head has a water spraying mode and a foam spraying mode; the console is a control center of the fire-fighting system;

the vehicle fire prevention control method is characterized by comprising the following steps:

s1: establishing a sensor installation location comparison table, wherein a mapping relation between the geographical coordinate of the installation position of each fire sensing device and the equipment identification number is established in the sensor installation location comparison table;

s2: establishing an actuator installation zone comparison table, wherein a mapping relation between the parking space number of each parking space or the associated vehicle license plate and the corresponding equipment identification codes of the vehicle fire protection device and the spraying device arranged on the parking space is established in the actuator installation zone comparison table;

s3: generating a near parking space list for each parking space in an underground garage according to a preset rule, wherein the near parking space list comprises parking space numbers of all parking spaces with spreading disaster risks when the parking space catches fire;

s4: acquiring detection signals of all places of the garage collected by the fire sensing device, and judging whether all the detection signals exceed a preset safety threshold range; if yes, generating a fire characteristic signal;

s5: determining the equipment identification code of the corresponding sensor according to the source of the generated fire characteristic signal, and then inquiring the sensor installation area comparison table to obtain the geographic coordinate of the parking space area generating the fire characteristic signal;

s6: driving a PTZ holder in the monitoring device to rotate according to the geographic coordinates, and acquiring real-time monitoring videos of parking places near the geographic coordinates; then, determining a target parking space which should execute a fire prevention strategy according to the real-time monitoring video: the method for selecting the target parking space comprises the following steps:

s61: performing framing processing on the real-time monitoring video, sampling a framing image according to a preset sampling ratio,

obtaining sample images containing all parking spaces and vehicles parked in the parking spaces, wherein each sample image comprises a synchronous full-color image and an infrared thermal image;

s62: sequentially inputting the infrared thermal images of each frame or the fusion characteristic images of the corresponding frames serving as sample images into a fire identification network based on machine learning, and predicting the fire early warning grade of the vehicle in each sample image;

the fusion characteristic image is obtained by fusing a full-color image and an infrared thermal image of a corresponding frame according to a preset rule;

s63: when the fire early warning level of the vehicle in any sample image is larger than a preset early warning range, inputting the full-color image in the corresponding sample image into a character recognition model based on an artificial neural network, and recognizing the parking space number of the corresponding current parking space in the image and/or the vehicle license plate of the parked vehicle;

s64: acquiring a nearby parking space list corresponding to the current parking space according to the parking space number of the current parking space, and updating the nearby parking space according to the parking space occupation state; then all parking spaces contained in the current parking space and the updated adjacent parking space list are used as the target parking spaces;

s7: inquiring the actuator installation zone comparison table by using the parking space number of each target parking space so as to obtain equipment identification codes of the vehicle fire protection device and the spraying device on each target parking space;

(1) For the current parking space in a fire early warning state, starting a vehicle fireproof device on the parking space, releasing a fire blanket and covering the automobile below; then starting a foam spraying mode in the spraying device, and spraying a foam extinguishing agent below the parking space until the fire early warning state is relieved;

(2) For the adjacent parking space of the current parking space, firstly starting a vehicle fireproof device on the parking space, releasing a fire blanket and covering the automobile below; and then starting a water spraying mode in the spraying device to spray fire-fighting water below the parking space until the fire early warning state is relieved.

2. The vehicle fire protection control method of an underground garage of claim 1, wherein: in step S1, the method for establishing the comparison table of the sensor installation location is as follows:

(1) The fire sensing devices are respectively arranged at different positions of the parking places, so that the detection ranges of all the fire sensing devices cover the whole underground parking places;

(2) Dividing the underground garage into a plurality of subareas according to the detection range of each sensor, wherein each subarea is responsible for one of the fire sensing devices;

(3) Establishing a one-to-one mapping relation between the address coordinates of each subarea and the equipment identification numbers of the fire sensing devices; the comparison table reflecting the mapping relation is a required sensor installation location comparison table;

and after a certain fire sensing device generates a fire characteristic signal, inquiring the mounting zone comparison table according to the equipment identification number of the fire sensing device to obtain a zone with a fire early warning state.

3. The vehicle fire protection control method of an underground garage of claim 1, wherein: in step S2, the method for generating the actuator mounting location comparison table is as follows:

firstly, establishing a first mapping relation between the vehicle fire protection devices on each parking space and the equipment identification numbers of the spraying devices; then, establishing a second mapping relation among the parking space number of each parking space, the corresponding vehicle fireproof device and the corresponding spraying device; finally, whether each parking space is a fixed parking space or not is inquired, and for the fixed parking spaces, a third mapping relation is established between the parking space number of the parking space and the vehicle license plate of the related vehicle; a list representing a third mapping relation among the parking space numbers, the vehicle license plates, the vehicle fire protection devices and the spraying devices is the actuator mounting region comparison table;

and the equipment identification numbers of the vehicle fire protection device and the spraying device corresponding to the parking space which should execute the fire protection strategy can be determined by inquiring the actuator installation position comparison table.

4. The vehicle fire protection control method of an underground garage of claim 1, wherein: the nearby parking place list comprises a static list and a dynamic list; the static list is automatically generated according to a preset rule by combining the position layout of each parking space in the garage; the nearby parking space list in step S3 refers to a static list,

the dividing rule of the adjacent parking spaces in the static list is as follows:

(1) All parking spaces surrounding the current parking space are adjacent parking spaces of the current parking space;

(2) When one side of a certain current parking space is a passageway, the parking space opposite to the current parking space by the passageway is a nearby parking space of the current parking space;

5. The vehicle fire protection control method of an underground garage of claim 4, wherein: the dynamic list is a new list obtained by adjusting the static list by the fire fighting system according to the actual occupation state of the vehicle in each parking space when the fire fighting system executes a fire prevention decision; step S64, the updated adjacent parking space list refers to a dynamic list; the update rule of the dynamic list is as follows:

6. The vehicle fire protection control method of an underground garage of claim 1, wherein: and S6, acquiring a real-time monitoring image through a dual-channel camera with infrared imaging and natural light imaging functions, wherein the dual-channel camera only keeps a channel for natural light imaging to be opened in a conventional state, and simultaneously opens the natural light imaging and infrared imaging channels of the dual-channel camera responsible for the corresponding area after the fire characteristic signal is generated in any area in the garage to acquire synchronous dual-channel data.

7. The vehicle fire protection control method of an underground garage of claim 1, wherein: in step S62, the fusion feature image is a feature enhanced image generated by an image fusion method based on YUV space color transfer, and the generation process is as follows:

(1) Firstly, color fusion is carried out on a full-color image and an infrared thermal image in a YUV space by adopting a linear combination method to obtain an initial source image;

(2) Then selecting a reference image, converting the reference image from an RGB space to a YUV space, and transmitting the mean value and standard deviation of YUV components of the reference image to the YUV components of the initial source image;

8. The vehicle fire protection control method of an underground garage of claim 1, wherein: in step S63, the method for identifying the license plate or the parking space number of the vehicle includes the following steps:

(1) Area positioning: carrying out characteristic search on the collected full-color image to find a candidate area which accords with the automobile license plate or parking space number characteristic;

(2) Character segmentation: adopting a vertical projection method to perform region segmentation on the selected license plate region or parking space number to obtain a plurality of continuous character images contained in the license plate or parking space number;

9. The vehicle fire protection control method of an underground garage of claim 1, wherein: the fire fighting system also comprises an alarm module, the alarm module is in communication connection with the console, and the alarm module comprises a plurality of area alarms positioned in different areas of the garage site and a central alarm positioned at one side of the console; when the control console detects that any area in the garage generates a fire characteristic signal, the central alarm and the area alarm responsible for the corresponding area are driven to work simultaneously.

10. The method of vehicle fire protection control for an underground garage of claim 9, wherein: the alarm state of the area alarm is manually eliminated only after the fire treatment is finished and after manual field operation is carried out; the central alarm is automatically deactivated only when all zone alarms resume a silence state;

in step S8, the state of releasing the fire early warning state is used as an index for controlling whether the parking space fire protection device and the spraying device are closed, and the state of releasing the fire early warning state refers to a state of returning the central alarm from the alarm state to the silent state.