CN209962374U - Smoke alarm device and system - Google Patents
Smoke alarm device and system Download PDFInfo
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- CN209962374U CN209962374U CN201920391768.4U CN201920391768U CN209962374U CN 209962374 U CN209962374 U CN 209962374U CN 201920391768 U CN201920391768 U CN 201920391768U CN 209962374 U CN209962374 U CN 209962374U
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Abstract
The utility model relates to the field of internet of things information communication, in particular to a smoke alarm device, a system, an establishing method and an alarm method; a smoke detection alarm device comprises a smoke detection device and a networking alarm device, wherein the smoke detection device is wirelessly connected with the networking alarm device and comprises a smoke detection module and a data transmitting module; a networking smoke alarm system comprises a smoke alarm device, a cloud service module and a plurality of alarm receiving terminals; the utility model provides a regional networking smoke alarm system, except having traditional smoke alarm function, can communicate with the cloud in real time, send out the warning, and can broadcast the pronunciation that the cloud issued; the utility model discloses can also receive alarm information through receiving alert terminal to the condition of a fire, the rescue personnel are put out to the high efficiency.
Description
Technical Field
The utility model relates to an thing allies oneself with information communication field specifically is a cigarette and feels alarm device and system.
Background
The current smoke feeling has independent smoke feeling and networking smoke feeling. After the independent smoke sensor is triggered, the alarm is only given in the installation area. The networking smoke is felt, is triggered the warning by smog after, except local audible and visual warning, the networking smoke is felt can also transmit alarm information to remote management personnel, is handled by the managers further. Or the networking smoke sensor transmits the alarm information to a cloud server, and the server forwards the alarm information to a mobile phone of an equipment owner.
In the case of an imperfect fire protection system, such as a high-rise residential area and a small hotel, in the initial stage of a fire, it is difficult to inform all rooms of information in time even if each room in the case of the fire has smoke, and the current smoke is only responsible for reporting the information to the central control system.
The existing networking smoke detector needs a central monitoring responsible person to verify the alarm from a single smoke detector. If the person in charge of the monitoring center is absent, the good fire extinguishing machine is missed.
The existing networking smoke sensor is inconvenient to network, a special organization is needed to be responsible for networking fire-fighting network equipment, related personnel are needed to be equipped for daily management, the construction of a fire-fighting network is difficult, and the operation of individuals is difficult.
The existing smoke detector only reports an alarm signal to a central system, the accuracy of alarm or whether the alarm is false is verified manually, and no intelligent system replaces manual fire alarm to issue in time when the alarm is absent manually.
To current residential area, do not install and maintain convenient and low-cost fire alarm network, the district resident does not have the follow-on awareness of the smoke sensation installation/operating condition of this building, also can't solve, there is hidden danger in property fire prevention safety all the time. In addition, when a fire disaster occurs, fire fighters cannot know which residents have no personnel in time, and which residents have personnel needing rescue, and the personnel need to search rooms by rooms manually, so that time and efficiency are wasted.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems, the utility model provides an independently used smoke alarm device,
the utility model discloses a realize like this:
a smoke detection alarm device comprises a smoke detection device and a networking alarm device, wherein the smoke detection device is wirelessly connected with the networking alarm device and comprises a smoke detection module and a data transmitting module;
the smoke detection module is used for detecting smoke concentration and generating alarm information when the smoke concentration reaches a set value;
the data transmitting module is used for transmitting the alarm information to a networking alarm device;
a data receiving module of the networking alarm device receives the alarm information and forwards the alarm information to the network communication module, and the network communication module forwards the alarm information to a target device and a first alarm module;
a first alarm module of the networking alarm device receives alarm information from a network communication module and triggers an alarm;
the data receiving module is connected with the data transmitting module through Bluetooth or infrared.
Preferably, the first alarm module comprises a sound-light alarm module and an information prompt, and the sound-light alarm module is used for playing audio information containing alarm information.
Preferably, the smoke detection device further comprises a processor, and the processor sends a heartbeat packet to the networking alarm device according to set time;
the smoke detection device can also comprise a second alarm module which is an audible and visual alarm and can send out prompt sound when the detection content reaches a threshold value.
Preferably, the first alarm information comprises an alarm signal and an alarm type, the alarm signal comprises one or more of smoke concentration and temperature data information, and the alarm type comprises one or more of a fire alarm and a combustible gas alarm.
The utility model also provides a networking smoke-sensitive alarm system, which is used for the series connection of a plurality of smoke-sensitive alarm devices, and comprises a plurality of smoke-sensitive alarm devices, a target device and a plurality of alarm receiving terminals;
the target device comprises a cloud service module, realizes two-way communication with the networked alarm devices, and is used for receiving the alarm information and forwarding the alarm information to the smoke alarm devices and the alarm receiving terminal;
and the alarm receiving terminal is in two-way communication with the cloud service module, and is used for receiving the alarm information and transmitting the information to the cloud service module.
Preferably, the cloud service module is connected with the networking alarm device through a wifi router and/or an NB-IoT; the alarm receiving terminal comprises intelligent communication mobile equipment.
The beneficial effect of above-mentioned scheme:
the utility model provides a pair of alarm device is felt to cigarette, through feeling alarm device's cigarette detection device and networking alarm device split into two independent entity settings, the two is connected through wireless, and detection device is felt to cigarette adopts bluetooth or the infrared and networking alarm device of low-power consumption to be connected for detection device is felt to cigarette's battery life is longer, and it is more convenient to make the change battery, has reduced the trouble that the cigarette was felt and has dismantled.
The utility model provides a pair of alarm system is felt to networking cigarette, the convenience is installed and is maintained at home environment, feels alarm device through cloud service module to a plurality of cigarettes and links the warning, except having traditional cigarette and feeling alarming function, can accept the instruction from the high in the clouds in real time, sends out the warning, can broadcast the speech alarm information that the high in the clouds was issued.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural view of a smoke alarm device provided by the present invention;
fig. 2 is a schematic structural view of a networked smoke alarm system according to a first embodiment of the present invention;
fig. 3 is a schematic structural diagram of a cloud server module provided by the utility model;
fig. 4 is the utility model provides an intelligent mobile terminal application module structure chart.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example one
Referring to fig. 1, the smoke detection alarm device comprises a smoke detection device and a networking alarm device, wherein the smoke detection device and the networking alarm device are of two independent entity structures, and the smoke detection device is in wireless connection with the networking alarm device. The smoke detection device comprises a smoke detection module and a data transmission module; the networking alarm device comprises a data receiving module, a network communication module and a first alarm module;
in this embodiment, the smoke detection module is configured to detect smoke concentration, and generate alarm information when the smoke concentration reaches a set value, and may further be a smoke sensor; the data transmitting module is used for transmitting the alarm information to the networking alarm device, the data receiving module of the networking alarm device forwards the alarm information to the network communication module, and the network communication module forwards the second alarm information to the target device; in the embodiment, the first alarm module receives alarm information from the network communication module and triggers an alarm;
in this embodiment, through bluetooth or infrared connection between data receiving module and the data transmission module, make smoke detector and the networking alarm device between adopt the transmission mode of low-power consumption, alarm information to smoke detector detection transmits networking alarm device, networking alarm device carries out remote real-time signal transmission again, and with the real-time network communication of purpose device, need produce great power consumption, so networking alarm device can adopt battery or external power supply, and networking alarm device can place the desktop or the optional position in house in bluetooth or infrared transmission's scope, this application is surveyed smoke detector and networking alarm split into two independent entities to traditional smoke detector, make smoke detector's battery life longer, the trouble of battery change has been reduced.
In this embodiment, the smoke detection device further comprises a processor, and the processor sends a heartbeat packet to the networked alarm device according to the set time, so as to be used for connection detection in a non-alarm state; the heartbeat in this embodiment contains information, which may include battery power, smoke concentration, and smoke temperature; preferably, the networking alarm device can receive and store heartbeat packet data;
preferably, the first alarm module comprises an audible and visual alarm module and an information prompt, the audible and visual alarm module is used for playing audio information containing alarm information, and the smoke detection device further comprises a second alarm module which is an audible and visual alarm and gives out an alarm prompt sound when the detection content reaches a threshold value.
In this embodiment, the alarm information includes an alarm signal and an alarm type, the alarm signal includes one or more of smoke concentration and temperature data information, and the alarm type includes one or more of a fire alarm and a combustible gas alarm.
Example 2
Referring to fig. 2, the utility model provides a networking smoke-sensitive alarm system, which connects a plurality of smoke-sensitive alarm devices in series, wherein the smoke-sensitive alarm system comprises a plurality of smoke-sensitive alarm devices, a destination device and a plurality of alarm receiving terminals, the destination device comprises a cloud service module, which realizes two-way communication with the networking alarm devices, is used for receiving the alarm information and forwards the alarm information to the plurality of smoke-sensitive alarm devices and the alarm receiving terminals; and the alarm receiving terminal is in two-way communication with the cloud service module, and is used for receiving the alarm information and transmitting the information to the cloud service module.
In this embodiment, the target device may be a cloud server, which is in bidirectional communication with the networked alarm device and is configured to receive alarm information sent by a network communication module of the networked alarm device, and after receiving the alarm information, the cloud server sends the alarm information to other smoke-sensitive alarm devices in the area; after the network communication modules of other smoke alarm devices receive alarm information from the cloud server, the first alarm module is triggered to give an alarm, and linkage alarm in the area is achieved. In the embodiment, the cloud service module is connected with the networking alarm device through a wifi router and/or an NB-IoT.
In this embodiment, the terminal of receiving police mainly is intelligent mobile device, and a high in the clouds server can be connected with a plurality of intelligent mobile device promptly, realizes remote real-time signal transmission, gives the user of relevant region with alarm information real-time transmission, realizes the function that alarm device's linkage was reported to the police and was reported to the relevant user simultaneously to the cigarette in the region.
The smoke detector of the smoke alarm device in this embodiment compiles the original alarm data into alarm information after acquiring the original alarm data, sends the alarm information to the network communication module of the networking alarm device, and transmits the alarm information to the cloud server through the network communication module. The high in the clouds server is receiving alarm information after, analyzes out user information, positional information fast, and other smoke sensation alarm device send alarm information and send alarm signal through sound and flash of light change through audible and visual alarm module in the user area, and in this embodiment, the sound information main content is the pronunciation fragment of recording in advance, and this pronunciation fragment can be updated at any time. The sound and light alarm and the voice broadcast are carried out alternately, and the process is repeated circularly.
Example 3
The utility model discloses alarm system is felt to cigarette based on networking has set up regional networking cigarette and has felt alarm system, and the establishment method of this system mainly includes monomer network's the establishment and regional network's establishment.
In this embodiment, the single network is constructed by networking a plurality of smoke alarm devices in a unit to the same alarm receiving terminal in each unit house. In this embodiment, the unit house is a house in a building or a plurality of houses under the control of a single house owner.
The regional network establishing method mainly comprises the step of networking a plurality of smoke alarm devices of a plurality of groups of single networks in a specific region to a cloud service module.
Specifically, the method for connecting the plurality of smoke alarm devices with the alarm receiving terminal is based on intelligent mobile equipment and an application program. The method comprises the steps that a user uses a unique identification code on mobile phone scanning equipment, the unique identification code in the embodiment is a two-dimensional code, equipment is registered to a cloud server module through scanning the two-dimensional code, an application program of a mobile phone end is downloaded and registered through registering an equipment page, and registration information comprises the number of a smoke monitoring device, the mobile phone number of the user, the position of the equipment, the name of the equipment and the like; the position of the equipment is accurate to longitude and latitude, a community name, a building name or number, a unit number, a floor and a room number, wherein the longitude and latitude are determined based on a navigation positioning system of the mobile phone, and accurate positioning is carried out by calling a background navigation positioning system. The registration of subsequent devices may inherit the location information of the previous device, and also allow the user to reset or refresh the location.
The application program also comprises an equipment registration module of the cloud service module, the module registers a user with the number by detecting the input mobile phone number, if the number does not exist in the system, and calls an interface of the fire prevention group management module to create a linkage fire prevention group and add new equipment into the group; and if the mobile phone number already exists in the system, adding the new equipment into the existing linkage fire prevention group.
The cloud service equipment registration module checks equipment position information input by a user, such as longitude and latitude, a community name, a building number, a room number and a mobile phone number, searches whether a regional fire prevention group exists according to the position information, and if not, creates a regional fire prevention group, adds the user as a member, and attaches the room number and the mobile phone number. If the regional fire prevention group exists, checking whether the user is a member of the regional fire prevention group, if not, returning the list information of the fire prevention group to an equipment registration page for the user to select, and inquiring whether the user is willing to join one regional fire prevention group; if the equipment is a member, the equipment is directly included in the regional fire protection group.
Aiming at the construction of a single network, mainly aiming at a family user in a single using unit, namely a plurality of smoke sensing alarm devices are arranged in a plurality of rooms, when one smoke sensing alarm device sends out an alarm signal, smoke senses in other rooms can alarm simultaneously, the alarm mode comprises voice broadcast besides sound-light alarm, and fire points are arranged in voice broadcast information. For non-family users, in order to use the smoke sensing linkage function, when equipment is registered, a virtual mobile phone number can be used to replace a real mobile phone number, the virtual mobile phone number is a string of numbers replacing the mobile phone number, and the user can select the numbers by himself or herself only if the numbers are different from the numbers in the system.
And aiming at the regional manager, the specific region can be used as a single network, namely the community property, and the smoke detector is used for registering the smoke detector of the community property duty room through setting the virtual number, and any smoke detector in the community can trigger the smoke detector linkage alarm, and the smoke detector alarm is not networked with the household smoke detector alarm, and cannot trigger the household smoke detector alarm to send out the alarm. In this embodiment, the specific area refers to the same building.
Aiming at the establishment of a regional network, the system is mainly aimed at users in a community, aiming at users in the community, a regional fire prevention group can be established voluntarily, and by checking smoke alarm devices in the group and position information bound by the smoke alarm devices, owners can know the installation condition and the working state of the smoke alarm devices in the local region of the building, so that the fire safety state of the local building can be known.
The utility model discloses a different owners' networking cigarette is felt, provides the facility of building a crowd. The networking smoke sensation may be set to public, discovered by the "search nearby" function of the application, and solicited for colonization. And the common group operation functions of group merging, deleting, group quitting and the like are supported. The cloud service module can automatically recommend nearby devices which can enter a group to the APP according to the device position information, such as the same building, the same unit and the same layer.
Example 4
The method for alarming smoke in the area networking comprises the following steps:
s10, a smoke detection module acquires original alarm data and generates an alarm, the original alarm data is compiled into first alarm information, a data transmission module transmits the first alarm information to a networking alarm device, and the first alarm information at least comprises an alarm signal; the alarm signal may include one or more of smoke concentration and temperature data information, and the first alarm information may further include an alarm type, which may include one or more of a fire alarm and a combustible gas alarm.
S20, the networking alarm device analyzes and processes the first alarm information, writes the first alarm information into a unique identification code of the networking alarm device, forms second alarm information and transmits the second alarm information to the cloud service module, the cloud service module analyzes the received second alarm information, generates third alarm information, broadcasts the third alarm information to all networking alarm devices in a single network generating the second alarm information, and judges whether the second alarm information is effective information or not according to an analysis result of the second alarm information; and analyzing the change trend of the smoke concentration and the temperature at the alarming moment according to the alarming signal in the second alarming information, and judging whether false alarm exists.
S30, if the judgment result is valid information, constructing a fourth alarm message, and broadcasting the fourth alarm message to all networking alarm devices in the area network generating the second alarm information;
and S40, sending the third alarm information and the fourth alarm information to an alarm receiving terminal of the associated user.
In the embodiment, the smoke detection module is used for detecting smoke concentration, and generating first alarm information when the smoke concentration reaches a set value; the data transmitting module transmits the first alarm information to a data receiving module of the networking alarm device, the data receiving module processes and processes the first alarm information to obtain second alarm information which can be selected and transmitted to a network communication module, the network communication module transmits the second alarm information to a cloud service module, the cloud service module receives the second alarm information, processes the second alarm information to generate third alarm information, and broadcasts the third alarm information to other networking alarm devices in the single network, so that a house in a building or a plurality of houses under the control of a user can generate linkage alarm, after a certain smoke alarm device triggers the alarm, the network communication modules of other smoke alarm devices in the single network can receive the alarm signal from the cloud service module, trigger the alarm module to generate linkage alarm, and transmit the third alarm information to an alarm receiving terminal of the single network through the cloud service module, the user is alerted via the mobile device.
If the second alarm information is judged to be effective information, a fourth alarm message is constructed and is broadcast to all networking alarm devices in the area network generating the second alarm information, all networking alarm devices in the area network trigger alarm, meanwhile, the fourth alarm information is forwarded to an alarm receiving terminal in the area network through a cloud service module, a relevant user is reminded through mobile equipment, if the second alarm information is judged to be misjudgment information, the fourth alarm information is not constructed, and the networking alarm devices in the area network are not sent alarm information.
Preferably, the method of this embodiment may further include: s11, if the smoke alarm device receives a cancellation instruction input by a user, sending alarm cancellation information to a cloud service module; and S12, when the cloud service module receives the alarm cancellation information before sending the fourth alarm message, determining the second alarm information as invalid alarm information. When the user judges that the alarm information is wrong, alarm cancellation information can be input through an application program of the intelligent mobile device, when the cloud service module receives the cancellation information before judging that the fourth alarm information is not sent, the second alarm information is judged to be invalid alarm information, the fourth alarm information is not constructed, and the cloud service module sends a control signal to a network communication module of the networking alarm device to close the first alarm module to send out sound-light alarm.
Aiming at an individual network and a regional network, if alarm information of a smoke alarm device in the individual network does not cancel after exceeding a set time, a cloud service module automatically broadcasts the alarm information to a regional fire prevention group in which the equipment participates. The members in the group can know the position of fire alarm, namely the name or number of the building, the unit number, the floor, the room number and the like, the telephone of the owner, the type of the fire alarm and the like.
According to the alarm method provided by the embodiment, the data transmitted to the cloud service module on the smoke sensing alarm device not only has the alarm signal, but also can have smoke concentration, temperature and humidity, and is used for judging the real condition of the fire alarm at the initial stage. For the alarm of single smoke sense in a single room, if the temperature is high, the smoke is large, the humidity is low, the alarm can be judged as a real fire alarm, and the cloud service module can issue the alarm to a regional fire prevention group as soon as possible for the real fire alarm with high probability through the accumulation and training of empirical data; for the smoke alarm event of low-probability fire alarm, the delay broadcast time is longer, so that the owner of suspected fire alarm points can cancel the alarm in the family fire prevention group manually.
The alarm system and the alarm method provided by the embodiment are suitable for spontaneous organization of residential communities and establishment of a fire network, the technical scheme replaces the advantage of the traditional networking smoke sensor, namely the audio signal function is integrated, the network establishment is convenient, and the monitoring is not centralized. And this technical scheme can also be used to combustible gas warning, and other fire control sensor networking.
Example 5
The present embodiment is different from the first embodiment and the second embodiment in that some of the smoke alarm devices in the present embodiment are non-physical devices, which are virtual smoke alarm devices installed on the smart mobile device.
The smoke alarm device, the networking smoke alarm system and the alarm method have the centralization effect, and users in an area can be established into a fire prevention group.
According to the technical scheme, the system can automatically recommend fire prevention group members according to the equipment position information, and help users to establish fire prevention groups.
After being triggered to alarm by smoke, the smoke detector reports data including smoke concentration, temperature and humidity to the cloud service module, the data can be further processed by an AI module in the cloud service module, and after judgment, the data is broadcasted to a relevant fire prevention group, so that the accuracy of automatic fire alarm broadcasting is improved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A smoke detection alarm device is characterized by comprising a smoke detection device and a networking alarm device, wherein the smoke detection device is wirelessly connected with the networking alarm device and comprises a smoke detection module and a data transmitting module;
the smoke detection module is used for detecting smoke concentration and generating alarm information when the smoke concentration reaches a set value;
the data transmitting module is used for transmitting the alarm information to a networking alarm device;
a data receiving module of the networking alarm device receives the alarm information and forwards the alarm information to the network communication module, and the network communication module forwards the alarm information to a target device and a first alarm module;
a first alarm module of the networking alarm device receives alarm information from a network communication module and triggers an alarm;
the data receiving module is connected with the data transmitting module through Bluetooth or infrared.
2. The smoke alarm device of claim 1, wherein the first alarm module comprises an audible and visual alarm module and an information prompt, and the audible and visual alarm module is configured to play audio information containing alarm information.
3. The smoke detector alarm device of claim 1,
the smoke detection device also comprises a processor, and the processor sends a heartbeat packet to the networking alarm device according to set time;
the smoke detection device can also comprise a second alarm module which is an audible and visual alarm and can send out prompt sound when the detection content reaches a threshold value.
4. The smoke alarm device of claim 1, wherein the first alarm information comprises an alarm signal and an alarm type, the alarm signal comprises one or more of smoke concentration and temperature data information, and the alarm type comprises one or more of a fire alarm and a combustible gas alarm.
5. A networked smoke alarm system, which is characterized by comprising a plurality of smoke alarm devices as claimed in claims 1-4, a destination device and a plurality of alarm receiving terminals;
the target device comprises a cloud service module, realizes two-way communication with the networked alarm devices, and is used for receiving the alarm information and forwarding the alarm information to the smoke alarm devices and the alarm receiving terminal;
and the alarm receiving terminal is in two-way communication with the cloud service module, and is used for receiving the alarm information and transmitting the information to the cloud service module.
6. The networked smoke detection alarm system of claim 5, wherein the cloud service module is connected with the networked alarm device through a wifi router and/or NB-IoT; the alarm receiving terminal comprises intelligent communication mobile equipment.
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| CN201920391768.4U CN209962374U (en) | 2019-03-26 | 2019-03-26 | Smoke alarm device and system |
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| CN201920391768.4U CN209962374U (en) | 2019-03-26 | 2019-03-26 | Smoke alarm device and system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110189495A (en) * | 2019-03-26 | 2019-08-30 | 王富仕 | A kind of cigarette sense warning device, system, method for building up and alarm method |
| CN111724562A (en) * | 2020-06-05 | 2020-09-29 | 珠海格力电器股份有限公司 | Smoke alarm and correction method thereof |
| CN115830789B (en) * | 2022-11-12 | 2024-03-08 | 中铁七局集团电务工程有限公司 | Intelligent building control system and method thereof |
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2019
- 2019-03-26 CN CN201920391768.4U patent/CN209962374U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110189495A (en) * | 2019-03-26 | 2019-08-30 | 王富仕 | A kind of cigarette sense warning device, system, method for building up and alarm method |
| CN111724562A (en) * | 2020-06-05 | 2020-09-29 | 珠海格力电器股份有限公司 | Smoke alarm and correction method thereof |
| CN111724562B (en) * | 2020-06-05 | 2021-11-16 | 珠海格力电器股份有限公司 | Smoke alarm and correction method thereof |
| CN115830789B (en) * | 2022-11-12 | 2024-03-08 | 中铁七局集团电务工程有限公司 | Intelligent building control system and method thereof |
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