CN112116775A - Fire detection method of multi-split air-conditioning equipment and multi-split air-conditioning system - Google Patents
Fire detection method of multi-split air-conditioning equipment and multi-split air-conditioning system Download PDFInfo
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- G—PHYSICS
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- 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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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C2/00—Fire prevention or containment
- A62C2/06—Physical fire-barriers
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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
- 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
- G08B17/117—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means by using a detection device for specific gases, e.g. combustion products, produced by the fire
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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
- G08B25/014—Alarm signalling to a central station with two-way communication, e.g. with signalling back
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B27/00—Alarm systems in which the alarm condition is signalled from a central station to a plurality of substations
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
- G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
- G08B7/062—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources indicating emergency exits
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Abstract
The invention discloses a fire detection method of multi-online equipment and a multi-online system. Wherein, the method comprises the following steps: collecting air parameters at an indoor unit, and determining whether a fire disaster occurs according to the air parameters; if a fire disaster occurs, judging the stage of the fire disaster according to the air parameters; and executing a corresponding fire protection strategy according to the stage of the fire. According to the invention, air is actively collected for detection through the air return opening of the air conditioner, so that the response speed of fire detection is increased. The stage of the current fire is judged by combining various sensors, so that misjudgment of the fire during escape and rescue is avoided. Need not to purchase fire control product alone and wiring installation, direct application multiplex equipment can be with whole building of fire detection system cover, practices thrift the cost. Through fire control linkage alarm, can in time propelling movement fire alarm information, personnel are evacuated as early as possible, and the personnel of getting in trouble are guided and are avoided the danger area, select the route of fleing safely.
Description
Technical Field
The invention relates to the technical field of multi-online equipment, in particular to a fire detection method of multi-online equipment and a multi-online system.
Background
Fire generation can be generally divided into four stages, namely, a smoldering stage: generating combustible gas (mainly CO) and a small amount of smoke; secondly, visible smoke stage: visible dense smoke is generated; ③ flame stage: open fire is generated, and the temperature is increased; fourthly, a violent combustion stage: the burning range of open fire is diffused, the temperature is rapidly raised, and a large amount of smoke and carbon dioxide are generated. The traditional fire alarm system is a mode of combining a smoke detector and a temperature detector, and the smoke detector and the temperature detector give alarms in a visible smoke stage and a flame stage respectively. The two modes have incomplete detection coverage, and the detection stage is in the middle and later stages of the fire, so that the time for evacuating people and rescuing the fire is too short.
In order to overcome the problems, an air-breathing smoke detector is provided, which can actively collect smoke and find fire ahead of time, but the mode needs to provide a special air-breathing pump, and extra energy consumption exists. And a single smoke detector or a single temperature-sensitive detector can only judge whether to alarm or not, cannot determine the combustion stage of the fire and cannot provide fire condition information for escape and rescue.
Aiming at the problem that the detection is not timely enough in the middle and later stages of the fire in the fire detection stage in the prior art, an effective solution is not provided at present.
Disclosure of Invention
The embodiment of the invention provides a fire detection method of multi-online equipment and a multi-online system, and aims to solve the problem that in the prior art, the detection is not timely enough in the middle and later stages of a fire.
In order to solve the technical problem, the invention provides a fire detection method for multi-split air-conditioning equipment, wherein the method comprises the following steps: collecting air parameters at an indoor unit, and determining whether a fire disaster occurs according to the air parameters; wherein the air parameters include: combustible gas concentration, smoke concentration, temperature; if a fire disaster occurs, judging the stage of the fire disaster according to the air parameters; and executing a corresponding fire protection strategy according to the stage of the fire.
Further, collecting air parameters at the indoor unit, including: detecting the concentration of combustible gas according to a combustible gas sensor, detecting the concentration of smoke according to a smoke sensor, and detecting the temperature according to a temperature sensor; the air return inlet of each indoor unit of each room is provided with a detection cavity, and a combustible gas sensor, a smoke sensor and a temperature sensor are arranged in the detection cavity.
Further, the air parameters include: combustible gas concentration, smoke concentration, temperature; determining whether a fire is occurring based on the air parameter, comprising: determining that a fire has occurred if at least one of the air parameters exceeds its corresponding threshold; otherwise, it is determined that a fire has not occurred.
Further, judging the stage of the fire according to the air parameters comprises:
if the concentration of the combustible gas exceeds the corresponding threshold value, and the smoke concentration and the temperature do not exceed the corresponding threshold value, determining that the stage of the fire is a smoldering stage;
if the combustible gas concentration and the smoke concentration exceed the respective corresponding threshold values, and the temperature does not exceed the corresponding threshold value, determining that the stage of the fire is a visible smoke stage;
if the concentration of the combustible gas, the concentration of the smoke and the temperature exceed the respective corresponding threshold values, judging that the stage of the fire is a flame stage;
and if the temperature rise amplitude is detected to exceed the preset amplitude and/or the indoor unit is offline after the flame stage is judged, judging that the stage of the fire is a violent combustion stage.
Further, the fire is in the following stages: smoldering, visible smoke, flame and violent combustion; executing a corresponding fire protection strategy according to the stage of the fire, comprising: if the stage of the fire is smoldering or visible smoke, executing a corresponding first-level fire-fighting strategy: closing an air exchange system of a room where the indoor unit is located, and starting a humidifying function of an air conditioner; if the stage of the fire is a flame stage or a violent combustion stage, executing a corresponding secondary fire-fighting strategy: the power supply of all rooms is cut off, and the fireproof isolation wall and the fireproof isolation door are opened.
Further, after determining whether a fire occurs according to the air parameter, the method further includes: if a fire disaster occurs, determining the room where the current indoor unit is located as the fire disaster position; identifying the location of the fire in an equipment distribution map and generating an escape route; wherein, the device distribution diagram displays the codes of each indoor unit and the corresponding room point locations; alarm information is sent and the location of the fire is broadcast.
Further, generating an escape route, comprising: generating a fire weight matrix network through information interaction among all indoor units; and calculating the weight of each indoor unit and the position of the fire in the fire weight matrix network, and generating an escape route from the room where each indoor unit is located to the escape opening by combining the position of the escape opening.
Further, after the escape route is generated, the method further comprises: monitoring indoor people flow information according to a detector at an air outlet of an indoor unit; and updating the escape route according to the indoor people flow information and pushing the escape route to a user.
The invention also provides a multi-split system for realizing fire detection, wherein the multi-split system comprises a plurality of outdoor units and a plurality of indoor units connected with each outdoor unit; the indoor unit is used for collecting air parameters and sending the air parameters to the fire control center through the outdoor unit connected with the indoor unit; the fire control center is connected to each outdoor unit and used for determining whether a fire disaster happens according to the air parameters; and if the fire disaster happens, judging the stage of the fire disaster according to the air parameters, and executing a corresponding fire protection strategy according to the stage of the fire disaster.
Furthermore, a detection cavity is arranged at an air return opening of the indoor unit, and a combustible gas sensor, a smoke sensor and a temperature sensor are arranged in the detection cavity.
Further, the fire control center is also used for identifying the fire position in the equipment distribution diagram and generating an escape route; and the equipment distribution diagram displays the codes of all indoor units and corresponding room point positions.
Furthermore, a detector is arranged at an air outlet of the indoor unit and used for monitoring indoor people stream information; and the fire control center is used for updating the escape route according to the indoor people flow information and pushing the escape route to a user.
Further, the multiple on-line system further comprises: and the sound and light alarm device is used for giving an alarm, indicating an escape route through sound and light and broadcasting the position of a fire.
The invention also provides a computer-readable storage medium, on which a computer program is stored, wherein the program, when executed by a processor, implements the method as described above.
By applying the technical scheme of the invention, a plurality of sensors arranged at a plurality of air return inlets of the multi-split air-conditioning system are utilized to realize integrated control, the stage of the fire is detected and judged, and the targeted emergency response treatment is carried out according to the stage of the fire. According to the invention, air is actively collected for detection through the air return opening of the air conditioner, so that the response speed of fire detection is increased. The stage of the current fire is judged by combining various sensors, so that misjudgment of the fire during escape and rescue is avoided. Need not to purchase fire control product alone and wiring installation, direct application multiplex equipment can be with whole building of fire detection system cover, practices thrift the cost. Through fire control linkage alarm, can in time propelling movement fire alarm information, personnel are evacuated as early as possible, and the personnel of getting in trouble are guided and are avoided the danger area, select the route of fleing safely.
Drawings
Fig. 1 is a flowchart of a fire detection method of a multi-online device according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a return air inlet of an indoor unit according to an embodiment of the present invention;
fig. 3 is a schematic view of an outlet structure of an indoor unit according to an embodiment of the present invention;
fig. 4 is a topological structure diagram of a multi-split system according to an embodiment of the present invention;
FIG. 5 is a flow chart of fire detection and linked alarms according to an embodiment of the present invention;
fig. 6 is a device profile according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, 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.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, and "a plurality" typically includes at least two.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
The words "if", as used herein, may be interpreted as "at … …" or "at … …" or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrases "if determined" or "if detected (a stated condition or event)" may be interpreted as "when determined" or "in response to a determination" or "when detected (a stated condition or event)" or "in response to a detection (a stated condition or event)", depending on the context.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in the article or device in which the element is included.
Example 1
The air conditioner is taken as an indispensable role in building construction, and is always taken as equipment only used for indoor air conditioning, and actually, an air conditioning system is distributed in each indoor area, an air return inlet of an indoor unit is a very good smoke detection point, an air outlet of the indoor unit is positioned at a higher indoor position, no shielding object is arranged in front of the air outlet, and blind areas are few. Based on this, if use air conditioning system as fire control monitoring, have better advantage. Meanwhile, the internal communication network of the air conditioning system can be used for fire-fighting communication, a distributed fire-fighting network is constructed, communication materials are saved, and labor cost is reduced. Alternative embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Fig. 1 is a flowchart of a fire detection method of a multi-split air-conditioning apparatus according to an embodiment of the present invention, as shown in fig. 1, the method including the steps of:
s101, collecting air parameters at an indoor unit, and determining whether a fire disaster occurs according to the air parameters; wherein the air parameters include: combustible gas concentration, smoke concentration, temperature;
step S102, if a fire disaster occurs, judging the stage of the fire disaster according to air parameters;
and step S103, executing a corresponding fire protection strategy according to the stage of the fire.
In the embodiment, a plurality of sensors arranged at a plurality of air return inlets of the multi-split air conditioner are used for realizing integrated control, detecting the fire condition, judging the stage of the fire, and performing targeted emergency response processing according to the stage of the fire. The fire alarm can be timely detected at the initial stage of the fire, so that a fire alarm can be timely sent out, and precious time is provided for subsequent fire rescue.
Fig. 2 is a schematic view of a return air inlet structure of an indoor unit according to an embodiment of the present invention, and as shown in fig. 2, a detection cavity is disposed at a return air inlet of an air conditioner indoor unit in each room of a building, and a combustible gas sensor (also called CO sensing unit), a smoke sensor (also called smoke sensing unit), and a temperature sensor (also called temperature sensing unit) are disposed in the detection cavity. The air circulation power of the air conditioner is utilized to actively sample the indoor air and send the indoor air into the detection cavity for real-time detection and analysis. The combustible gas concentration is detected according to the combustible gas sensor, the smoke concentration is detected according to the smoke sensor, and the temperature is detected according to the temperature sensor. Based on the method, timely and accurate detection of three air parameters, namely combustible gas concentration, smoke concentration and temperature, is realized, and the detection result can be used for accurately judging the stage of the fire in the follow-up process, so that corresponding fire-fighting measures can be timely and effectively triggered.
It should be noted that the air conditioner return air inlet has the self-cleaning function, and in the stage of fire or maintenance, the clean air filtered by the filter screen can be conveyed to the detection cavity through the air pump, so that the detection cavity is cleaned, and the sensitivity of the detection cavity is ensured not to be influenced by dust.
After detecting combustible gas concentration, smog concentration, temperature, confirm whether to have a fire according to the air parameter, specifically include: determining that a fire has occurred if at least one of the air parameters exceeds its corresponding threshold; otherwise, it is determined that a fire has not occurred. Based on this, this embodiment has set up three kinds of air parameters and has detected to improve the sensitivity of fire monitoring, and help judging the stage that the conflagration is located.
The fire is divided into the following stages: smoldering stage, visible smoke stage, flame stage, and intense combustion stage. Judging the stage of the fire according to the air parameters, which specifically comprises the following steps: if the concentration of the combustible gas exceeds the corresponding threshold value, and the concentration and the temperature of the smoke do not exceed the corresponding threshold values, the stage of the fire is judged to be a smoldering stage; if the concentration of the combustible gas and the concentration of the smoke exceed the respective corresponding threshold values, and the temperature does not exceed the corresponding threshold value, judging that the stage of the fire is a visible smoke stage; if the concentration of the combustible gas, the concentration of the smoke and the temperature exceed the respective corresponding threshold values, the stage of the fire is judged to be a flame stage; and if the temperature rise amplitude is detected to exceed the preset amplitude after the flame stage is judged, judging that the stage of the fire is a violent combustion stage. It should be noted that the preset amplitude is set to represent the abnormal temperature change, and in practical application, a specific value of the preset amplitude, for example, 10 ℃, may be set.
Due to the fact that the combustible gas, smoke and temperature change differently when the fire is in different stages, for example, in the smoldering stage, smoke and temperature are not abnormal generally without open fire, but the concentration of the combustible gas is over-standard, and for example, in the flame stage, the combustible gas, smoke and temperature are abnormal. Based on the method, the situation of a fire scene can be represented by monitoring whether indexes of three air parameters, namely combustible gas concentration, smoke concentration and temperature, exceed standards, so that the stage of the fire is determined.
The corresponding fire fighting strategies are different when the fire is in different stages. If the stage of the fire is smoldering or visible smoke, executing a corresponding first-level fire-fighting strategy: the ventilation system (fresh air machine, exhaust fan, etc.) of the room where the indoor machine is located is closed, and the purpose of reducing the oxygen content in the air is achieved by preventing the indoor and outdoor air from flowing through. The humidifying function of the air conditioner can be controlled to be started, the air humidity is quickly improved, and the fire disaster is prevented or delayed from being transited from a smoldering stage and a visible smoke stage to an open fire stage. If the stage of the fire is a flame stage or a violent combustion stage, executing a corresponding secondary fire-fighting strategy: the power supply of all rooms is cut off, and the fireproof isolation wall and the fireproof isolation door are opened to prevent the fire area from spreading.
After the fire is determined to happen, the room where the current indoor unit is located is determined as the fire position. Identifying the fire position in the equipment distribution map and generating an escape route; the device distribution diagram displays the codes of the indoor units and the corresponding room points. An alert message may then be sent to prompt the user to escape as soon as possible and to broadcast the fire location to alert the user to move away from the fire location.
When generating the escape route, the following preferred embodiments can be specifically realized: generating a fire weight matrix network through information interaction among all indoor units; and calculating the weight of each indoor unit and the fire position in the fire weight matrix network, and generating an escape route from the room where each indoor unit is located to the escape opening by combining the position of the escape opening. According to the embodiment, the escape routes from all rooms to the escape opening can be accurately obtained by setting the fire weight matrix network and calculating the weights. The escape route can be pushed to the user, for example, the escape route is pushed to a mobile terminal of the user through an APP, or the escape route is sent to the user in a short message/multimedia message mode, so that the user can check and receive the escape route in real time, and the user can escape smoothly.
After the escape route is generated, indoor people flow information can be monitored according to a detector at an air outlet of the indoor unit; and updating the escape route according to the indoor people flow information, wherein the updated escape route can also be pushed to the user through the APP. In practical applications, the detector may be configured as a radar module. Based on the method, the users can be accurately guided to evacuate in time, and the escape route can be updated in time along with the indoor people flow information.
Fig. 3 is a schematic view of an outlet structure of an indoor unit according to an embodiment of the present invention, and as shown in fig. 3, the outlet of the indoor unit is located at a higher position in a room, and there is no shielding object in front of the outlet, so that there are fewer blind areas. Therefore, the radar module (namely the detector) is arranged at the air outlet, indoor people flow information can be monitored, and the indoor people flow information comprises people flow density information and people flow flowing direction. The escape route can be adjusted and updated according to the above, so that people in the building can be evacuated to the escape opening as soon as possible.
Example 2
The invention also provides a multi-split system for realizing fire detection, and the fire detection method introduced in the embodiment can be realized. Fig. 4 is a topological structure diagram of a multi-split system according to an embodiment of the present invention, and as shown in fig. 4, the multi-split system includes a plurality of outdoor units and a plurality of indoor units connected to each outdoor unit. For example, one multi-indoor unit is provided for each floor (1F, 2F … … nF shown in fig. 4, n is the total number of floors), and one indoor unit is provided for each room of each floor, and the indoor unit has an air return opening and an air outlet opening. The indoor unit is used for collecting air parameters and sending the air parameters to the fire control center through the outdoor unit connected with the indoor unit. The air return port of the indoor unit is provided with a detection cavity, and a combustible gas sensor, a smoke sensor and a temperature sensor are arranged in the detection cavity.
The fire control center is connected with each outdoor unit and used for determining whether a fire disaster occurs according to the air parameters; if the fire disaster happens, judging the stage of the fire disaster according to the air parameters, and executing a corresponding fire protection strategy according to the stage of the fire disaster.
In specific application, the multi-split outdoor unit is used for circularly cooling indoor air, a room number is set in a room where each indoor unit is located, and the corresponding relation between the indoor units and the room numbers can be set at a platform end of a fire control center.
When the fire information is detected, the fire information is transmitted to the multi-connected outdoor unit through the communication line, the multi-connected outdoor unit synchronously sends the fire information to the air-conditioning indoor units of all rooms through the communication line for voice notification, and sends the fire information to the fire control center for confirmation, so that the purposes of finding the fire in advance, evacuating people as early as possible and obtaining precious fire fighting time are achieved.
The fire control center is also used for identifying the fire position in the equipment distribution diagram and generating an escape route; the device distribution diagram displays the codes of the indoor units and the corresponding room points.
A detector is arranged at an air outlet of the indoor unit and used for monitoring indoor people stream information; and the fire control center is used for updating the escape route according to the indoor people flow information.
The multi-split system further comprises: and the sound and light alarm device is used for giving an alarm, indicating an escape route through sound and light and broadcasting the position of a fire.
Example 3
FIG. 5 is a flow chart of fire detection and linked alarm according to an embodiment of the present invention, as shown in FIG. 5, the flow chart includes the following steps:
1) and air samples are collected from the air return inlet and sent into the detection cavity by utilizing the air circulation power of the air conditioner. A detection cavity is arranged at an air return inlet of an air conditioner indoor unit of each room, and a combustible gas sensor, a smoke sensor and a temperature sensor are arranged in the cavity. The air circulation power of the air conditioner is utilized to actively sample the indoor air and send the indoor air into the detection cavity for real-time detection and analysis.
2) And comparing parameters such as the concentration of combustible gas (such as CO), the concentration of smoke, the temperature and the like in the air sample with respective alarm thresholds, and judging whether the data of at least one sensor reaches the alarm thresholds.
3) If the data of at least one sensor reaches the alarm threshold value, the sensors of smoke, temperature and the like alarm at different stages of fire combustion respectively, and the data of each sensor comprehensively acquired by the characteristics can be utilized to further judge whether the current fire alarm condition is in a smoldering stage, a visible smoke stage, a flame stage or a violent combustion stage. The judgment logic is as follows:
(a) and when the combustible gas sensor detects that the concentration of the combustible gas exceeds the threshold value and the smoke sensor and the temperature sensor do not give an alarm, judging that the fire is in a smoldering stage.
(b) And under the condition that the combustible gas detector alarms, when the smoke sensor detects that the smoke concentration exceeds the threshold value and the temperature sensor does not alarm, judging that the fire is in a visible smoke stage.
(c) And under the condition that the combustible gas sensor and the smoke sensor give an alarm, when the temperature sensor detects that the temperature exceeds a threshold value, the fire disaster is judged to be in a flame stage.
(d) And if the temperature is detected to be greatly increased or the indoor unit is suddenly off-line, judging that the fire is in a violent burning stage.
4) The indoor unit uploads alarm information (such as the position of a fire and the stage of the fire) to the outdoor unit of the multi-split air conditioner through the bus.
5) And after receiving the alarm information from the indoor unit, the multi-connected outdoor unit identifies the alarm information and forwards the alarm information to a fire control center for confirmation in a wired or wireless manner.
At the building that has the degree of difficulty in the installation upgrading, alarm information accessible wireless transmission to the fire control center that air condensing units machine received, nevertheless compare in wired transmission, this mode exists the possibility that the communication delays even drops, and stability is relatively poor.
6) If the person on duty confirms the condition of a fire, alarm information is pushed to a multi-split air conditioner system of a corresponding building through a fire control center, an indoor unit connected with the multi-split air conditioner system is controlled by the multi-split air conditioner system to give an alarm, the position of the fire and the fire level are broadcasted through a loudspeaker attached to the indoor unit of the air conditioner, the first two stages of the stage where the fire is located belong to the first stage, and the second two stages of the stage where the fire is located belong to the second stage. The related alarm information can be synchronously displayed through the wire controller, and acousto-optic alarm is realized.
Aiming at four stages of fire, a fire control center can send out two fire control coping strategies of a first-level alarm and a second-level alarm with different levels. The first-level alarm corresponds to a smoldering stage and a visible smoke stage, and the second-level alarm corresponds to a flame stage and a violent combustion stage.
(a) Primary alarm: the fire control center issues a control instruction to close an air exchange system (a fresh air fan, an exhaust fan and the like) of a room where the alarm internal unit is located, and the purpose of reducing the oxygen content in the air is achieved by preventing indoor and outdoor air from flowing through. The humidifying function is started, the air humidity is quickly improved, and the fire disaster is prevented or delayed from being transited from a smoldering stage and a visible smoke stage to an open fire stage.
(b) Secondary alarm: the fire control center can cut off the power supply of the area where the alarm indoor unit is located, and the fire-proof isolation wall and the fire-proof isolation door are started to prevent the fire area from spreading.
Before fire detection, an installer records each air conditioner indoor unit code and corresponding room point location data, transmits the room point location data to a fire control center, and forms an equipment distribution diagram by matching with a 3D map of a building.
Fig. 6 is a distribution diagram of equipment according to an embodiment of the present invention, as shown in fig. 6, when a solid point location (fire point) has a fire, an indoor unit (also referred to as an indoor unit) therein detects smoke information, and automatically sends fire alarm information to a nearby indoor unit, and the nearby indoor unit automatically sends the smoke information to the nearby indoor unit after receiving the smoke information, and rapidly constructs a fire weight matrix network, and calculates weights of the indoor unit and the fire point through information transmission, and starts a voice and light system to indicate an escape route in combination with the direction of an escape opening, and simultaneously a radar module starts to perform "radar shooting", and uninterruptedly monitor people stream density information and direction, and all information is synchronously transmitted to a fire control center, so that a manager can check the field situation in real time, and provide a basis for fire evacuation judgment. The fire control center updates the escape route in real time and pushes the escape route to the user, for example, the escape route is pushed to a mobile terminal of the user through an APP or is sent to the user in a short message/multimedia message mode, and meanwhile, the radar module can also provide position information for firefighters to rescue detained personnel.
Example 4
The embodiment of the present invention provides software for implementing the technical solutions described in the above embodiments and preferred embodiments.
Embodiments of the present invention provide a non-volatile computer storage medium, where computer-executable instructions are stored, and the computer-executable instructions may execute a fire detection method for a multi-online device in any of the above method embodiments.
The storage medium stores the software, and the storage medium includes but is not limited to: optical disks, floppy disks, hard disks, erasable memory, etc.
From the above description, it can be known that the present invention actively collects air samples for detection through the air return opening of the air conditioner, and the response speed of fire detection is improved. The invention realizes active air circulation collection by using the power of the air-conditioning air circulation system, thereby reducing energy consumption. The invention utilizes the air outlet of the air conditioner to detect the information of people getting trapped. Need not to purchase fire control product alone and wiring installation, direct application multiplex equipment can be with whole building of fire detection system cover, practices thrift the cost. Through fire control linkage alarm, can in time propelling movement fire alarm information, personnel are evacuated as early as possible, and the personnel of getting in trouble are guided and are avoided the danger area, select the route of fleing safely. The problem of fire detection area integrated control is solved, the detection and management and control to different fire stages, stranded personnel position location problem.
The product can execute the method provided by the embodiment of the invention, and has corresponding functional modules and beneficial effects of the execution method. For technical details that are not described in detail in this embodiment, reference may be made to the method provided by the embodiment of the present invention.
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.
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 (14)
1. A fire detection method of a multi-split air conditioner, the method comprising:
collecting air parameters at an indoor unit, and determining whether a fire disaster occurs according to the air parameters; wherein the air parameters include: combustible gas concentration, smoke concentration, temperature;
if a fire disaster occurs, judging the stage of the fire disaster according to the air parameters;
and executing a corresponding fire protection strategy according to the stage of the fire.
2. The method of claim 1, wherein collecting air parameters at an indoor unit comprises:
detecting the concentration of combustible gas according to a combustible gas sensor, detecting the concentration of smoke according to a smoke sensor, and detecting the temperature according to a temperature sensor;
the air return inlet of each indoor unit of each room is provided with a detection cavity, and a combustible gas sensor, a smoke sensor and a temperature sensor are arranged in the detection cavity.
3. The method of claim 1, wherein determining whether a fire is occurring based on the air parameter comprises:
determining that a fire has occurred if at least one of the air parameters exceeds its corresponding threshold;
otherwise, it is determined that a fire has not occurred.
4. The method of claim 1, wherein determining the stage of the fire based on the air parameter comprises:
if the concentration of the combustible gas exceeds the corresponding threshold value, and the smoke concentration and the temperature do not exceed the corresponding threshold value, determining that the stage of the fire is a smoldering stage;
if the combustible gas concentration and the smoke concentration exceed the respective corresponding threshold values, and the temperature does not exceed the corresponding threshold value, determining that the stage of the fire is a visible smoke stage;
if the concentration of the combustible gas, the concentration of the smoke and the temperature exceed the respective corresponding threshold values, judging that the stage of the fire is a flame stage;
and if the temperature rise amplitude is detected to exceed the preset amplitude and/or the indoor unit is offline after the flame stage is judged, judging that the stage of the fire is a violent combustion stage.
5. The method of claim 1, wherein the fire is in a stage selected from the group consisting of: smoldering, visible smoke, flame and violent combustion; executing a corresponding fire protection strategy according to the stage of the fire, comprising:
if the stage of the fire is smoldering or visible smoke, executing a corresponding first-level fire-fighting strategy: closing an air exchange system of a room where the indoor unit is located, and starting a humidifying function of an air conditioner;
if the stage of the fire is a flame stage or a violent combustion stage, executing a corresponding secondary fire-fighting strategy: the power supply of all rooms is cut off, and the fireproof isolation wall and the fireproof isolation door are opened.
6. The method of claim 1, wherein after determining whether a fire has occurred based on the air parameter, the method further comprises:
if a fire disaster occurs, determining the room where the current indoor unit is located as the fire disaster position;
identifying the location of the fire in an equipment distribution map and generating an escape route; wherein, the device distribution diagram displays the codes of each indoor unit and the corresponding room point locations;
alarm information is sent and the location of the fire is broadcast.
7. The method of claim 6, wherein generating an escape route comprises:
generating a fire weight matrix network through information interaction among all indoor units;
and calculating the weight of each indoor unit and the position of the fire in the fire weight matrix network, and generating an escape route from the room where each indoor unit is located to the escape opening by combining the position of the escape opening.
8. The method of claim 6, wherein after generating the escape route, the method further comprises:
monitoring indoor people flow information according to a detector at an air outlet of an indoor unit;
and updating the escape route according to the indoor people flow information and pushing the escape route to a user.
9. A multi-split system for realizing fire detection is characterized by comprising a plurality of outdoor units and a plurality of indoor units connected with each outdoor unit;
the indoor unit is used for collecting air parameters and sending the air parameters to the fire control center through the outdoor unit connected with the indoor unit;
the fire control center is connected to each outdoor unit and used for determining whether a fire disaster happens according to the air parameters; and if the fire disaster happens, judging the stage of the fire disaster according to the air parameters, and executing a corresponding fire protection strategy according to the stage of the fire disaster.
10. The multi-split system as claimed in claim 9, wherein a detection chamber is provided at a return air inlet of the indoor unit, and a combustible gas sensor, a smoke sensor and a temperature sensor are provided in the detection chamber.
11. The multi-split system as claimed in claim 9,
the fire control center is also used for identifying the fire position in the equipment distribution diagram and generating an escape route; and the equipment distribution diagram displays the codes of all indoor units and corresponding room point positions.
12. The multi-split system as claimed in claim 11,
a detector is arranged at an air outlet of the indoor unit and used for monitoring indoor people stream information;
and the fire control center is used for updating the escape route according to the indoor people flow information and pushing the escape route to a user.
13. The multi-split system as claimed in claim 9, further comprising:
and the sound and light alarm device is used for giving an alarm, indicating an escape route through sound and light and broadcasting the position of a fire.
14. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, carries out the method according to any one of claims 1 to 8.
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