CN112863108A - Fire alarm system with wireless charging module - Google Patents

Fire alarm system with wireless charging module Download PDF

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Publication number
CN112863108A
CN112863108A CN202110009939.4A CN202110009939A CN112863108A CN 112863108 A CN112863108 A CN 112863108A CN 202110009939 A CN202110009939 A CN 202110009939A CN 112863108 A CN112863108 A CN 112863108A
Authority
CN
China
Prior art keywords
wireless charging
detector
module
power supply
charging module
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110009939.4A
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Chinese (zh)
Inventor
陈伏龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fire Cloud Shanghai Technology Co ltd
Original Assignee
Fire Cloud Shanghai Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fire Cloud Shanghai Technology Co ltd filed Critical Fire Cloud Shanghai Technology Co ltd
Priority to CN202110009939.4A priority Critical patent/CN112863108A/en
Publication of CN112863108A publication Critical patent/CN112863108A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00Fire alarms; Alarms responsive to explosion
    • G08B17/10Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/01Alarm 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
    • G08B25/10Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using wireless transmission systems
    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B7/00Signalling 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
    • G08B7/06Signalling 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
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/20Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/01Protocols
    • H04L67/10Protocols in which an application is distributed across nodes in the network

Abstract

The invention discloses a fire alarm system with a wireless charging module, belonging to the field of fire monitoring and alarming, comprising: the wireless charging device comprises a plurality of detectors, an audible and visual alarm device and a control module, wherein the audible and visual alarm device and the control module are arranged in the detectors, each detector is respectively provided with a rechargeable power supply and a wireless charging module, the rechargeable power supply is electrically connected with the wireless charging module, and the wireless charging module acquires electric energy provided by the wireless charging device in a wireless mode; each detector comprises a sensing module, an audible and visual alarm device and a control module, wherein the control module is used for controlling the audible and visual alarm device to give out audible and visual alarms according to smoke data. The technical scheme of the invention has the beneficial effects that: this fire alarm system adopts the detector that has the wireless module of charging, utilizes wireless mode to realize fire detector's wireless function of filling soon, has reduced the replacement cost of detector power, guarantees the effective use of detector, and it is convenient to maintain, has further increased fire detector's application wide range.

Description

Fire alarm system with wireless charging module
Technical Field
The invention relates to the field of fire monitoring and alarming, in particular to a fire alarm system with a wireless charging module.
Background
The fire alarm system generally adopts a fire detector to monitor smoke concentration, smoke particles in smoke have absorption and scattering effects on light along with the generation of smoke, high temperature and fire light when a fire occurs, the propagation characteristic of the light can be changed, the fire detector can respond to visible or invisible smoke particles, and the visible or invisible smoke particles are converted into electric signals through the detector to alarm, so that the alarm purpose is realized, and the fire is timely extinguished. The independent smoke detector is widely applied to fire safety monitoring in places such as hotels, shops, internet bars, dance halls, coffee houses, leisure halls and houses, is directly powered by 9V laminated batteries or alternating current 220V, is convenient to install and use, can realize independent detection and independent alarm, and does not need to be connected with a fire alarm controller.
At present, most of the independent smoke detectors on the market are powered by a battery power supply, and the independent smoke detectors are generally installed at the tops of floors and are limited by the service life of the batteries; moreover, because the installation position of the detector is high, danger is easy to occur during maintenance, and therefore, aiming at the problems, a fire alarm system with a wireless charging module is urgently needed to be designed so as to meet the requirement of practical use.
Disclosure of Invention
To solve the above problems in the prior art, a fire alarm system with a wireless charging module is provided, and the specific technical scheme is as follows:
a fire alarm system having a wireless charging module, comprising:
the wireless charging device comprises a plurality of detectors, each detector is provided with a rechargeable power supply and a wireless charging module, the rechargeable power supply is electrically connected with the wireless charging module, the wireless charging module obtains electric energy provided by a wireless charging device in a wireless mode, and each detector comprises
The sensing module is connected with the rechargeable power supply and used for detecting smoke data in a target area;
the acousto-optic alarm device is used for giving out acousto-optic alarm;
and the control module is respectively connected with the sensing module and the sound-light alarm device and is used for controlling the sound-light alarm device to send out sound-light alarm according to the smoke data.
Preferably, each of the detectors further comprises:
the electric quantity detection module is connected with the rechargeable power supply and used for detecting the electric quantity information of the rechargeable power supply;
and the first communication module is respectively connected with the control module and the electric quantity detection module and is used for receiving the electric quantity information.
Preferably, the method further comprises the following steps:
a cloud server, which is respectively and remotely connected with each detector and the first communication module, wherein the cloud server comprises:
a storage unit for storing the mounting position of each of the probes;
the first monitoring unit is connected with the storage unit and used for receiving the smoke data and outputting first alarm information according to the smoke data and the corresponding installation position of the detector;
the second monitoring unit is connected with the storage unit and used for receiving the electric quantity information and outputting second alarm information according to the electric quantity information and the corresponding installation position of the detector;
and the mobile terminals are respectively and remotely connected with the cloud server and used for receiving the first alarm information and/or the second alarm information.
Preferably, each of the detectors further comprises:
and the reset button is respectively connected with the corresponding sound-light alarm device and the control module and is used for canceling the sound-light alarm.
Preferably, the wireless charging apparatus includes:
the base is provided with a power supply;
and the wireless charging part is connected with the power supply through a telescopic device.
Preferably, the wireless charging device further includes:
one end of the rocker is connected with the telescopic device through a transmission device.
Preferably, the transmission means comprises:
the wheel disc is connected with the rocker through a rotating shaft;
the upper end of the screw rod component is connected with the upper end of the telescopic device, and the lower end of the screw rod component is fixedly connected with the wheel disc.
Preferably, a buffer layer is provided on the wireless charging unit.
Preferably, the detector is a standalone smoke fire detector.
The technical scheme of the invention has the beneficial effects that:
the fire alarm system provided by the invention adopts the detector with the wireless charging module, realizes the wireless quick charging function of the fire detector in a wireless mode, reduces the replacement cost of the power supply of the detector, ensures the effective use of the detector, is convenient to maintain, and further increases the application popularization range of the fire detector.
Drawings
FIG. 1 is a block diagram of a probe according to an embodiment of the present invention;
fig. 2 is a block diagram illustrating a fire alarm system having a wireless charging module according to the present invention;
FIG. 3 is a block diagram of a specific embodiment of a cloud server according to the present invention;
fig. 4 is a schematic structural diagram of a specific embodiment of a charging process of the detector according to the present invention.
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 should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting.
The invention provides a fire alarm system with a wireless charging module, belonging to the field of fire monitoring and alarming, as shown in figures 1 and 2, comprising:
the wireless charging system comprises a plurality of detectors (1A, 1B … 1C), each detector (1A, 1B … 1C) is respectively provided with a rechargeable power supply 11 and a wireless charging module 12, the rechargeable power supply 11 is electrically connected to the wireless charging module 12, the wireless charging module 12 obtains electric energy provided by a wireless charging device in a wireless mode, and each detector (1A, 1B … 1C) comprises
A sensing module 18 connected to the rechargeable power supply 11 for detecting smoke data in a target area;
an audible and visual alarm device 13 for giving audible and visual alarm;
and the control module 14 is respectively connected with the sensing module 18 and the audible and visual alarm device 13 and is used for controlling the audible and visual alarm device 13 to give out audible and visual alarms according to the smoke data.
Specifically, the fire alarm system provided by the invention comprises a plurality of detectors (1A, 1B … 1C), wherein the detectors (1A, 1B … 1C) are independent smoke fire detectors, the independent smoke fire detectors are convenient to install and use and can realize independent detection and independent alarm, generally, the independent smoke fire detectors adopt 9V batteries for power supply, the invention improves the independent smoke fire detectors, the original power supply is changed into the power supply of a rechargeable power supply 11, a wireless charging module 12 is added, an external wireless charging device is adopted to charge the detectors based on a wireless charging technology, an acousto-optic alarm device 13 and a control module 14 are arranged in the detectors (1A, 1B … 1C), the acousto-optic alarm device 13 can carry out acousto-optic alarm in a certain area range, and the invention realizes the detectors (1A, 1B … C) in a wireless mode, 1B … 1C), the replacement cost of the detector (1A, 1B … 1C) power supply is reduced, and the maintenance is convenient.
In a preferred embodiment, each detector (1A, 1B … 1C) further comprises:
the electric quantity detection module 15 is connected with the rechargeable power supply 11 and is used for detecting the electric quantity information of the rechargeable power supply 11;
a first communication module 16, respectively connected to the control module 14 and the power detection module 15, for receiving the power information.
Specifically, in this embodiment, the power detection module 15 is configured to detect power information of the rechargeable power source 11, where the power information may be represented by a percentage, and when the power is lower than a first preset value (e.g., 5%), it indicates that the power is insufficient and charging is required; when the electric quantity is higher than a second preset value (for example, 100%), the electric quantity is sufficient, and the charging is required to be stopped, so that the danger caused by overvoltage is avoided; the electric quantity can be distinguished by different colors, red represents that the electric quantity is insufficient, green represents that the electric quantity is normal, and yellow represents that the electric quantity is sufficient.
In a preferred embodiment, as shown in fig. 3, the method further comprises:
a cloud server 2, each of the probes (1A, 1B … 1C) and the first communication module 16 are remotely connected, and the cloud server 2 includes:
a storage unit 21 for storing the mounting position of each probe (1A, 1B … 1C);
the first monitoring unit 22 is connected with the storage unit 21 and used for receiving the smoke data and outputting first alarm information according to the smoke data and the installation positions of the corresponding detectors (1A, 1B … 1C);
the second monitoring unit 23 is connected with the storage unit 21 and used for receiving the electric quantity information and outputting second alarm information according to the electric quantity information and the installation positions of the corresponding detectors (1A, 1B … 1C);
the mobile terminals (3A, 3B … 3C) are respectively and remotely connected with the cloud service end 2 and used for receiving the first alarm information and/or the second alarm information.
Specifically, since the independent smoke fire detector (1A, 1B … 1C) is only suitable for small places such as homes, stores, or other places with small areas, when the detector (1A, 1B … 1C) gives an alarm, people are required within 10 meters, otherwise the alarm is invalid. The free standing smoke fire detectors (1A, 1B … 1C) need to be installed approximately one per 30-40 square spaces. According to the invention, the cloud service end 2 can be used for carrying out centralized monitoring on a plurality of detectors (1A, 1B … 1C) in the fire monitoring system, smoke data and electric quantity information of each detector (1A, 1B … 1C) are stored in the cloud service end 2, so that the future backtracking is facilitated, a corresponding threshold value is set, when the smoke data exceeds the first threshold value, first alarm information is sent, the first alarm information comprises abnormal smoke data, and the installation positions of the detectors (1A, 1B … 1C) sending the smoke data are hardware addresses of the detectors (1A, 1B … 1C); when the electric quantity information is lower than the corresponding second threshold value, maintenance personnel need to be notified, after the maintenance personnel receive the notification, according to the installation position in the second alarm information, the wireless charging device is taken to wirelessly charge the corresponding detector (1A, 1B … 1C), the maintenance personnel can temporarily leave in the charging process, other affairs are processed automatically, when the electric quantity information reaches 100%, the second alarm information is sent again, the second alarm information comprises the electric quantity information and the hardware address of the corresponding detector (1A, 1B … 1C), at the moment, the maintenance personnel can return to the site again, and charging is stopped.
In a preferred embodiment, each detector (1A, 1B … 1C) further comprises:
and the reset button 17 is respectively connected with the corresponding audible and visual alarm device 13 and the control module 14 and is used for canceling the audible and visual alarm according to external operation.
Specifically, after the maintenance personnel arrive at the site, the corresponding detectors (1A, 1B … 1C) are reset through the reset button 17, and the sound-light alarm is stopped.
In a preferred embodiment, as shown in fig. 4, the wireless charging device comprises:
a base 41, wherein the base 41 is provided with a power supply;
a wireless charging part 42, the wireless charging part 42 is connected with the power supply and is connected with the power supply through a telescopic device 43.
Specifically, the wireless charging device comprises a base 41, a power supply, a telescopic device 43 and a wireless charging part 42, wherein the power supply provides electric energy for the wireless charging part 42, heat dissipation holes are formed in the side wall of the base 41, the telescopic device 43 is formed by adopting the existing telescopic structure, and a buffer layer is arranged on the wireless charging part 42;
remove base 41 to suitable position, telescoping device 43 upwards extends, and it is regional to wireless charging on wireless charging portion 42 contact smoke detector (1A, 1B … 1C) to laminate completely, realize the wireless charging of stand alone type smoke detector (1A, 1B … 1C), need not to dismantle the battery, be convenient for maintain, and at the in-process that charges, also need not artifical nurse, practice thrift manpower, material resources.
It should be noted that the telescopic structure of the telescopic device 43 adopted by the present invention can directly adopt the prior art, the present invention is characterized in that the wireless charging technology is used for charging the independent smoke detectors (1A, 1B … 1C), the wireless charging is limited to a short distance, even the wireless charging can be realized by contact, and the smoke detectors (1A, 1B … 1C) are generally arranged on the top of a floor, so that the telescopic device 43 is required to be arranged, and the wireless charging part 42 can be contacted with the independent smoke detectors (1A, 1B … 1C).
In a preferred embodiment, the wireless charging device further comprises:
a rocker, one end of which is connected with the telescopic device 43 through a transmission device.
In a preferred embodiment, the transmission comprises:
the wheel disc is connected with the rocker through a rotating shaft;
and the upper end of the screw rod component is connected with the upper end of the telescopic device 43, and the lower end of the screw rod component is fixedly connected with the wheel disc.
Specifically, the screw assembly includes a plurality of screws, for example, a first screw, a second screw, and a third screw, and two adjacent screws are screwed together, wherein the upper end of the screw far away from the base 41 is fixedly connected to the upper end of the corresponding telescopic tube, and the lower end of the screw close to the base 41 is fixedly connected to the wheel disc.
Furthermore, an internal thread is arranged on the inner wall of the first screw, an external thread matched with the external thread of the first screw is arranged on the outer wall of the second screw, an internal thread is arranged on the inner wall of the second screw, and an external thread matched with the internal thread of the second screw is arranged on the outer wall of the third screw.
Specifically, two adjacent screw rods are matched through threads, and in a telescopic state, after a rocker is rotated in a forward direction, a wheel disc is driven to rotate, the wheel disc drives a first screw rod to rotate, a second screw rod and a third screw rod can also rotate relatively, the screw rods extend, the third screw rod can drive an uppermost third telescopic pipe to extend upwards, the third telescopic pipe drives a second telescopic pipe to slide, and a connecting assembly extends until a wireless charging portion 42 contacts a smoke detector (1A, 1B … 1C); similarly, in the extension state, the rocker is rotated reversely to drive the wheel disc to rotate reversely, so as to drive the first screw to rotate reversely, the second screw and the third screw also rotate relatively, when the screws are contracted, the third screw drives the third telescopic pipe to contract downwards, the third telescopic pipe drives the second telescopic pipe to slide, the second telescopic pipe drives the first telescopic pipe to slide, and the connecting assembly is contracted to be in the original state.
In a preferred embodiment, the upper ends of the first screw rod and the second screw rod are respectively provided with an inward lug, and the lower ends of the second screw rod and the third screw rod are respectively provided with an outer edge matched with the lug.
Specifically, the junction of two adjacent screw rods, the lower extreme of upper screw rod and the upper end of lower floor's screw rod are equipped with the anti-disengagement part that matches each other respectively, avoid because excessively flexible, lead to two adjacent screw rods to separate from the junction.
The technical scheme of the invention has the beneficial effects that:
the fire alarm system provided by the invention adopts the detector with the wireless charging module, realizes the wireless quick charging function of the fire detector in a wireless mode, reduces the replacement cost of the power supply of the detector, ensures the effective use of the detector, is convenient to maintain, and further increases the application popularization range of the fire detector.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.

Claims (9)

1. A fire alarm system with a wireless charging module, comprising:
the wireless charging device comprises a plurality of detectors, each detector is provided with a rechargeable power supply and a wireless charging module, the rechargeable power supply is electrically connected with the wireless charging module, the wireless charging module obtains electric energy provided by a wireless charging device in a wireless mode, and each detector comprises
The sensing module is connected with the rechargeable power supply and used for detecting smoke data in a target area;
the acousto-optic alarm device is used for giving out acousto-optic alarm;
and the control module is respectively connected with the sensing module and the sound-light alarm device and is used for controlling the sound-light alarm device to send out sound-light alarm according to the smoke data.
2. A fire alarm system having a wireless charging module according to claim 1, wherein each of the detectors further includes:
the electric quantity detection module is connected with the rechargeable power supply and used for detecting the electric quantity information of the rechargeable power supply;
and the first communication module is respectively connected with the control module and the electric quantity detection module and is used for receiving the electric quantity information.
3. A fire alarm system with a wireless charging module according to claim 2, further comprising:
a cloud server, which is respectively and remotely connected with each detector and the first communication module, wherein the cloud server comprises:
a storage unit for storing the mounting position of each of the probes;
the first monitoring unit is connected with the storage unit and used for receiving the smoke data and outputting first alarm information according to the smoke data and the corresponding installation position of the detector;
the second monitoring unit is connected with the storage unit and used for receiving the electric quantity information and outputting second alarm information according to the electric quantity information and the corresponding installation position of the detector;
and the mobile terminals are respectively and remotely connected with the cloud server and used for receiving the first alarm information and/or the second alarm information.
4. A fire alarm system with a wireless charging module according to claim 1,
each of the detectors further includes:
and the reset button is respectively connected with the corresponding sound-light alarm device and the control module and is used for canceling the sound-light alarm.
5. The fire alarm system with the wireless charging module according to claim 1, wherein the wireless charging device comprises:
the base is provided with a power supply;
and the wireless charging part is connected with the power supply through a telescopic device.
6. The fire alarm system with the wireless charging module according to claim 5, wherein the wireless charging device further comprises:
one end of the rocker is connected with the telescopic device through a transmission device.
7. A fire alarm system with a wireless charging module according to claim 6, wherein the transmission means comprises:
the wheel disc is connected with the rocker through a rotating shaft;
the upper end of the screw rod component is connected with the upper end of the telescopic device, and the lower end of the screw rod component is fixedly connected with the wheel disc.
8. The fire alarm system with the wireless charging module according to claim 5, wherein a buffer layer is provided on the wireless charging part.
9. A fire alarm system with a wireless charging module according to claim 1, wherein the detector is a standalone smoke fire detector.
CN202110009939.4A 2021-01-05 2021-01-05 Fire alarm system with wireless charging module Pending CN112863108A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110009939.4A CN112863108A (en) 2021-01-05 2021-01-05 Fire alarm system with wireless charging module

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110009939.4A CN112863108A (en) 2021-01-05 2021-01-05 Fire alarm system with wireless charging module

Publications (1)

Publication Number Publication Date
CN112863108A true CN112863108A (en) 2021-05-28

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CN202110009939.4A Pending CN112863108A (en) 2021-01-05 2021-01-05 Fire alarm system with wireless charging module

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202584347U (en) * 2012-06-05 2012-12-05 山东北仁汇智能源发展有限公司 Wireless charging smoke sensing detection alarm
WO2019119327A1 (en) * 2017-12-20 2019-06-27 邱海燕 Wireless smoke detector
CN210466648U (en) * 2019-06-26 2020-05-05 汉威科技集团股份有限公司 Smoke alarm based on electromagnetic energy
CN210606003U (en) * 2019-07-26 2020-05-22 安徽泛米科技有限公司 Kitchen fire alarm detection system
CN111817446A (en) * 2020-07-01 2020-10-23 上海市城市建设设计研究总院(集团)有限公司 Wireless charging system of Internet of things fire fighting device and operation method thereof
CN112071016A (en) * 2020-09-14 2020-12-11 广州市几米物联科技有限公司 Fire monitoring method, device, equipment and storage medium

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202584347U (en) * 2012-06-05 2012-12-05 山东北仁汇智能源发展有限公司 Wireless charging smoke sensing detection alarm
WO2019119327A1 (en) * 2017-12-20 2019-06-27 邱海燕 Wireless smoke detector
CN210466648U (en) * 2019-06-26 2020-05-05 汉威科技集团股份有限公司 Smoke alarm based on electromagnetic energy
CN210606003U (en) * 2019-07-26 2020-05-22 安徽泛米科技有限公司 Kitchen fire alarm detection system
CN111817446A (en) * 2020-07-01 2020-10-23 上海市城市建设设计研究总院(集团)有限公司 Wireless charging system of Internet of things fire fighting device and operation method thereof
CN112071016A (en) * 2020-09-14 2020-12-11 广州市几米物联科技有限公司 Fire monitoring method, device, equipment and storage medium

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Application publication date: 20210528