CN209056059U - A kind of wireless smoke alarm based on NB-IOT communication - Google Patents

Abstract

This application discloses a kind of wireless smoke alarms based on NB-IOT communication, it include: shell, the leaded light component for being set to hull outside, the optics labyrinth for being set to enclosure interior, infrared tube, circuit board, sound component, 9V lithium battery and the test key being set on circuit board, triggering test key, circuit board are connect with 9V lithium battery when the light-guiding pillar of leaded light component is located at right above test key and leaded light component is pressed；It include single-chip microcontroller, NB-IOT communication module and the operational amplification circuit for smoke signal acquisition in circuit board, the input terminal of operational amplification circuit and the reception pipe of infrared tube connect, the connection of the input terminal of output end and single-chip microcontroller, the output end of single-chip microcontroller is connect with sound component and leaded light component respectively, and the output end of single-chip microcontroller also passes through NB-IOT communication module and connect with remote server platform.By the smoke alarm, is conducive to simplify alarm system link, improves alarm timeliness and accuracy, additionally it is possible to provide effective lighting in fire.

Description

A kind of wireless smoke alarm based on NB-IOT communication

Technical field

This application involves Smoke Detection technical fields, detect more particularly to a kind of wireless smoke sense based on NB-IOT communication Device.

Background technique

Smoke alarm is the usual means in fire alarm.The main wired smoke alarm of common smoke alarm With two kinds of wireless smoke alarm.

Wired smoke alarm uses wired data transfer mode, is routed in installation process at the scene.

Wireless smoke alarm uses wireless data transmission mode, and wireless smoke alarm common at present is normally based on The detector of LORA communication or the communication of 433MHZ, 315MHZ fixed frequency range.This detector need special gateway host or Repeater is communicated with detector, is obtained fire alarm information, is then again believed fire alarm by GPRS or WIFI by gateway host Breath is transmitted to remote server.

However, in current wired smoke alarm, due to being largely routed in installation process, it is easy to happen failure, and And the troubleshooting after breaking down and maintenance are highly inconvenient, so that the transmission of fire alarm information is not prompt enough.Current Wireless smoke alarm is due to needing gateway host or repeater to carry out intermediate conveyor, and communication node is more, and that breaks down is general Rate is big, and system cost is high.Moreover, indicator light is dimer in the current smoke alarm usually combined aural and visual alarm of itself, escape Life can only be by the emergency light in building, if emergence lighting lamp breaks down, by the safe escape band to user Greatly perplex.

Utility model content

This application provides a kind of wireless smoke alarms based on NB-IOT communication, wirelessly communicate skill using NB-IOT Art, carry out detector data directly arrive server end signal transmission, eliminate needed in communication link host or repeater into The trouble that row signal transfers saves system cost, while the design is designed using ring of light leaded light, having when fire alarm being facilitated to occur Benefit escape.

In order to solve the above-mentioned technical problem, the embodiment of the present application discloses following technical solution:

A kind of wireless smoke alarm based on NB-IOT communication, comprising: shell is set to guide-lighting group of hull outside Part, the optics labyrinth for being set to enclosure interior, infrared tube, circuit board, sound component, 9V lithium battery and test key, institute It states infrared tube to connect by optics labyrinth with circuit board, the test key is set on circuit board, the leaded light component Light-guiding pillar is located at right above test key, and triggering test key when the leaded light component is pressed, the circuit board and 9V lithium Battery connection；

It include: single-chip microcontroller, NB-IOT communication module and the operation amplifier for smoke signal acquisition in the circuit board Circuit, the input terminal of the operational amplification circuit are connect with the reception pipe of the infrared tube, the operational amplification circuit it is defeated Outlet is connect with the input port AD of the single-chip microcontroller, and the output end of the single-chip microcontroller connects with sound component and leaded light component respectively It connects, the output end of the single-chip microcontroller is also connect by the NB-IOT communication module with remote server platform.

Optionally, the leaded light component includes the light guide ring being fixedly connected and light-guiding pillar, and tests light guide ring and light-guiding pillar For an overall structure, upper casing center is fixed on by connecting component, connecting component is several sections and opens reeded half-connection Part, when light guide ring stress, light guide ring and light-guiding pillar main structure can generate displacement, and light-guiding pillar can touch on circuit board Test key, play the effect that is pressed of test key.

Optionally, battery sampling circuit, the input terminal and 9V of the battery sampling circuit are additionally provided in the circuit board Lithium battery connection, the output end of the battery sampling circuit are connect with Chip Microcomputer A/D input port.

Further, the battery sampling circuit includes triode BG6, and the emitter of triode BG6 is separately connected 9V The anode of lithium battery and the one end resistance R22, the base stage of the other end connecting triode BG6 of resistance R22, the base of triode BG6 Pole also passes through the collector of a resistance R21 connecting triode BG5, the emitter ground connection of triode BG5, the base of triode BG5 Pole passes through a resistance R17 connection Chip Microcomputer A/D input port BAEN；The collector of triode BG6 passes through a concatenated resistance The input port the AD BATE of R20 connection single-chip microcontroller, and be grounded using the concatenated resistance R15 of a resistance R20.

Optionally, the shell includes upper casing, middle shell and bottom case；

The leaded light component is set to upper casing top center, and the circuit board is detachably connected with the middle shell, and The center of the circuit board opens up fluted, and the one side of the circuit board connects the optics labyrinth by groove, described infrared The another side of the circuit board is set to pipe；

The operatic tunes of the 9V lithium battery and sound component is fixed on the middle shell, and the 9V lithium battery includes electricity Pond and battery compartment；

The bottom case is screwed on middle shell and connect, and the middle shell is connect with upper casing by fixing muscle.

Optionally, the sound component includes piezo, the operatic tunes and driving circuit, and the operatic tunes is fixed on the middle shell On, the piezo is set on the operatic tunes, and the driving circuit is set on circuit board, and the circuit board passes through driving Circuit is connect with the piezo.

Optionally, the wireless smoke alarm based on NB-IOT communication is additionally provided with anti-excision structure, the anti-excision knot Structure include anti-excision ontology and anti-excision can reset switch, the anti-excision can reset switch connect with the single-chip microcontroller, it is described Anti- ontology of extracing is set to the bottom case in the one side of shell, the anti-excision can reset switch be set to circuit board direction In the one side of middle shell, and the anti-excision of when bottom case is normally connect with middle shell can reset switch be in reset state.

The technical solution that embodiments herein provides can include the following benefits:

The application provides a kind of wireless smoke alarm based on NB-IOT communication, by the way that NB-IOT is arranged in the circuit board Fire alarm information can be transmitted to remote server by COAP agreement in time by communication module.The setting of NB-IOT communication module, The equipment such as repeater, the gateway host of intermediate line link are saved, is conducive to simplify alarm system, effectively reduces communication link, favorably In the efficiency for improving signal transmission, and due to saving intermediate line link equipment, also helping reduces equipment failure rate and sets Standby cost.

It is additionally provided with leaded light component in the wireless smoke alarm of the application, when wireless smoke sense detector alarm, guide-lighting group Light in part can be highlighted persistently, play good illuminating effect.And the light-guiding pillar in leaded light component, when leaded light component is pressed When lower, light-guiding pillar can generate mechanical displacement, so that the test key in circuit board is pressed, leaded light component and test key This connection type can be avoided the key hole in addition opening up detector, save the space resources of whole device, and key is hidden It is hidden on the circuit board inside wireless smoke alarm, can effectively avoid the unnecessary trouble of maloperation bring, be conducive to Improve the alarm accuracy of wireless smoke alarm.

Using the driving circuit being set on circuit board, piezo vibration is driven to issue the sound, due to piezo and the operatic tunes Between fitting, the sound of the vibration can be spread out by the operatic tunes, and be transmitted to entire enclosure interior simultaneously, as a result, sound After piezo vibration sounding, operatic tunes diffusion and conduction, the aggregation of interior of shell sound this triple amplification, by the acoustic pressure of sound Grade is promoted inside housings to maximizing, since on the shell of entire detector, only upper casing is in communication with the outside equipped with through-hole, Therefore, most sound passes to the external world from the through hole of upper casing, and conductive process gathers sound again, and sound four times are increased Pressure, it is ensured that sound can transmit farther, and warning effect maximizes.

Also set up anti-excision structure in the wireless smoke alarm of the application, the anti-anti- excision ontology extractd in structure and anti- Extract can reset switch be respectively arranged on bottom case and middle shell, and anti-excision structure can reset switch connect with single-chip microcontroller, bottom case Reset state is in when normally connecting with middle shell, when bottom case is separated with middle shell, single-chip microcontroller can reset switch by anti-excision State detects the anti-shift signal for extracing structure, so that issuing detector extracts warning message, compared to electricity such as contact electrodes The mode of connection, reset switch belong to mechanical connection, and stable and reliable in work, simple installation is low in cost, have apparent application Advantage and cost advantage.

The battery sampling circuit of the design uses switch control, and low-power consumption processing will sampling electricity when system does not work Road cutting, greatly reduces system power dissipation.

It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not The application can be limited.

Detailed description of the invention

The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the application Example, and together with specification it is used to explain the principle of the application.

In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, for those of ordinary skill in the art Speech, without creative efforts, is also possible to obtain other drawings based on these drawings.

Fig. 1 is a kind of structural frames of the wireless smoke alarm based on NB-IOT communication provided by the embodiment of the present application Figure；

Fig. 2 shows for the exemplary structure of smoke alarm wireless in a kind of specific embodiment provided by the embodiment of the present application It is intended to；

Fig. 3 is battery sampling circuit diagram in the embodiment of the present application；

Fig. 4 is piezo driver circuit schematic diagram in the embodiment of the present application；

Fig. 5 is the work flow diagram of wireless smoke alarm in the embodiment of the present application.

Symbol indicates: 1- shell, 11- upper casing, shell, 13- bottom case, 2- leaded light component, 21- light guide ring, 22- are guide-lighting in 12- Column, 3- optics labyrinth, 4- infrared tube, 5- circuit board, 6- sound component, 61- piezo, the 62- operatic tunes, 7-9V lithium battery, The anti-excision structure of 71- battery, 72- battery compartment, 8-, the anti-excision ontology of 81-, the anti-excision of 82- can reset switches.

Specific embodiment

In order to make those skilled in the art better understand the technical solutions in the application, below in conjunction with the application reality The attached drawing in example is applied, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described implementation Example is merely a part but not all of the embodiments of the present application.Based on the embodiment in the application, this field is common The application protection all should belong in technical staff's every other embodiment obtained without making creative work Range.

The application in order to better understand explains in detail presently filed embodiment with reference to the accompanying drawing.

Referring to Fig. 1, Fig. 1 is a kind of wireless smoke alarm based on NB-IOT communication provided by the embodiment of the present application Structural block diagram.As shown in Figure 1, the wireless smoke alarm in the present embodiment specifically includes that shell 1, is set to outside shell 1 Leaded light component 2, be set to inside shell 1 optics labyrinth 3, infrared tube 4, circuit board 5, sound component 6,9V lithium battery 7 And test key.Wherein, infrared tube 4 includes infrared light emitting diode and infrared light receiving diode, infrared light emission Diode and infrared light receiving diode are connect by optics labyrinth 3 with circuit board 5, and test key is set on circuit board 5, are led Optical assembly, circuit board 5 are connect with 9V lithium battery 7.

It wherein, include: that single-chip microcontroller, NB-IOT communication module and the operation for smoke signal acquisition are put in circuit board 5 Big circuit.The input terminal of operational amplification circuit is connect with infrared receiving tube, the output end of operational amplification circuit and single-chip microcontroller it is defeated Enter end connection, the output end of single-chip microcontroller is connect with sound component 6 and leaded light component 2 respectively, and the output end of single-chip microcontroller also passes through NB- IOT communication module is connect with remote server platform.The operational amplification circuit of the present embodiment for acquire smoke signal and by its The converter being transmitted in single-chip microcontroller.

Single-chip microcontroller timing passes through optics labyrinth 3 and carries out smoke signal detection, and the smoke signal that will test is through infrared receiver Pipe 4 is transmitted to the operational amplification circuit on circuit board 5, is transmitted to list after amplifying processing to it by operational amplification circuit Piece machine.It is provided with converter in the single-chip microcontroller of the present embodiment, smoke signal can be converted by the converter of single-chip microcontroller For electric signal, single-chip microcontroller judges whether current smoke signal exceeds Smoke Detection threshold value according to preset Smoke Detection threshold value, If it exceeds Smoke Detection threshold value then starts alarm, including local alarm and remote-end alarm, it may be assumed that start local sound component 6 And leaded light component 2, while warning message being transmitted to by NB-IOT communication module the server platform of distal end.If no More than Smoke Detection threshold value, then single-chip microcontroller does not start alarm signal.

It is provided with NB-IOT communication module in the wireless smoke alarm of the present embodiment, it can by NB-IOT communication module Fire alarm information is transmitted to remote server in time.The setting of NB-IOT communication module enables wireless smoke alarm straight It connects and is communicated with host computer platform, avoid the setting of the intermediate line links such as gateway host or repeater, be conducive to simplify fire alarm letter The transmission route of data is ceased, the reliability and timeliness of signal transmission are improved；And due to the simplification of data transmission route line, moreover it is possible to Enough substantially reduce the cost of entire fire alarm system.

Referring to fig. 2, Fig. 2 is the example of wireless smoke alarm in a kind of specific embodiment provided by the embodiment of the present application Property structural schematic diagram.As shown in Figure 2, the leaded light component 2 of the present embodiment includes the light guide ring 21 being fixedly connected and light-guiding pillar 22, is led The design of the ring of light 21, can fire occur when formed a highlighted light belt, be conducive to improve fire warning function and effectively Ground illuminating effect.When the emergency lighting of especially scene of fire is broken down, the setting of leaded light component 2 can be played effective Illuminating effect is conducive to the personal safety for the personnel of keeping the scene intact.

The upper layer of leaded light component 2 is light guide ring 21, and the state of extension is presented in light guide ring 21 on sensor housing outer wall, than More typically strip, the band-like or structures such as cyclic annular, in order to preferably realize illuminating effect, light guide ring 21 is preferably able to surround biography 360 degree of sensor housing exterior walls or more, convenient for being able to observe that the light that light guide ring 21 issues in each orientation.It is provided in Fig. 2 Example in, light guide ring 21 has chosen cyclic structure, and the top of upper casing is arranged in, taken into account the requirement for light guide ring 21, Illuminating effect is maximized, and light guide ring 21 is in the top of sensor, further reduces the influence for other components.

The bottom of light guide ring 21 is fixedly connected with light-guiding pillar 22, when the plane where light guide ring 21 is pressed, light guide ring 22 main structures are subjected to displacement, and light-guiding pillar 22 can touch test key at this time, make to test key presentation down state, due to surveying Examination key be electrically connected with the interface microcontroller on circuit board, test key state change can on circuit board single-chip microcontroller sending Different level signals, single-chip microcontroller on circuit board 5 according to the level height of test key-press input mouth pin, come judge test by Whether key is pressed, and the single-chip microcontroller on final drive circuit board carries out system testing.Such as: when level is low level, determine When test key is pressed, warning message is tested；When level is high level, discriminating test key is not pressed, without Keystroke handling.

This connection type of leaded light component and test key, can be avoided the key hole in addition opening up detector, save The space resources of whole device, and key is hidden on the circuit board inside wireless smoke alarm, can effectively avoid missing The unnecessary trouble of bring is operated, the system stability for improving wireless smoke alarm is conducive to.

In the present embodiment 9V lithium battery 7 be used for for wireless smoke alarm power, for improve 9V lithium battery 7 reliability and Safety, is additionally provided with battery sampling circuit in the wireless smoke alarm of the present embodiment, the input terminal of battery sampling circuit with 9V lithium battery 7 connects, and the output end of battery sampling circuit is connect with single-chip microcontroller.

The schematic diagram of battery sampling circuit may refer to Fig. 3, from the figure 3, it may be seen that when needing to carry out voltage to 9V lithium battery 7 to adopt When sample, single-chip microcontroller so that BG6 is connected, and then applies the 9V cell voltage of lithium battery by control triode BG5 conducting To resistance R20 and the both ends resistance R15, single-chip microcontroller acquires the voltage of BATE point, calculates battery voltage value by partial pressure；Work as circuit When not needing collection voltages, single-chip microcontroller control triode BG5 shutdown achievees the purpose that power saving to make BG6 turn off.

Using the battery sampling circuit of the present embodiment, single-chip microcontroller can be sent out battery under-voltage signal by NB-IOT communication module Remote server platform is given, reminds user to replace battery in time by distal end.In addition, the battery sampling circuit of the present embodiment is adopted It is handled with blanking voltage, when cell voltage is lower than 6.5V, system enters low power consumpting state, no longer progress data processing and signal Acquisition.If since human factor is forgotten to replace battery etc., under this circuit structure, detector will not long-term under-voltage work, energy It is enough effectively to avoid detector because of explosion or the generation of other accidents caused by battery over-discharge.

With continued reference to Fig. 2 it is found that the wireless smoke sense detector housing 1 of the present embodiment can use three-decker: upper casing 11, Middle shell 12 and bottom case 13, wherein several through-holes are arranged in upper casing 11, not only can effectively be radiated, but also can be realized sound Extend out；The channel of connection upper casing 11 and bottom case 13 is provided on middle shell 12, even being located at upper casing 11 and bottom case 13 Independent electronic component can also form association, so that the setting inside entire detector is more reasonable.

For overall structure setting above, leaded light component 2 is set to 11 top of upper casing, and circuit board 5 detachably connects with middle shell It connects, and the center of circuit board 5 opens up fluted, the one side of circuit board 5 connects optics labyrinth 3 by groove, and infrared tube 4 passes through Optics labyrinth 3 is connect with circuit board 5, and infrared tube 4 is set to the another side of circuit board；9V lithium battery 7 and sound component 6 The operatic tunes 62 be fixed on middle shell 12, and 9V lithium battery 7 includes battery 71 and battery compartment 72；Bottom case 13 and middle 12 company of being screwed on of shell It connects, and middle shell 13 is connect with upper casing 11 by fixing muscle.The design of this structure, is conducive to storied placement, convenient for fault inquiry and Maintenance.

With continued reference to Fig. 2 it is found that the sound component 6 of the present embodiment includes piezo 61, the operatic tunes 62 and driving circuit. Structurally, the operatic tunes 62 is fixed on the middle shell 12 of shell 1, and the operatic tunes 62 also have both connection upper casing 11 and bottom case 13 it Between channel function, since the operatic tunes 62 forms a columnar cavity lane, piezo 61 designs the thin slice circularized, directly It is nested in the outside of the operatic tunes 62.

Using above structure, sound component 6 realizes the mode of function are as follows:

Using the driving circuit being set on circuit board, piezo vibration is driven to issue the sound, due to piezo 61 and sound The sound of fitting between chamber, the vibration can be spread out by the operatic tunes, and be transmitted to entire enclosure interior simultaneously, as a result, sound Sound is after piezo vibration sounding, operatic tunes diffusion and conduction, the aggregation of interior of shell sound this triple amplification, by the sound of sound It arbitrarily downgrades and is not internally pulled up to maximization in detector, due on the shell of entire detector, only upper casing is equipped with through-hole and outer Boundary's connection, therefore, most sound conducts the external world from the through hole of upper casing, so that sound is gathered again, sound four times are increased Pressure, it is ensured that sound can transmit farther, and warning effect maximizes.

The circuit diagram of driving circuit, may refer to Fig. 4 in the present embodiment.L1 is three foot inductance, also known as self coupling in Fig. 4 Transformer, Q5 are triode.As shown in Figure 4, V+ is 9V lithium battery power supply, is boosted by three foot inductance L1, to drive buzzing Piece 61 issues the sound.Q5 is triode, and Q5 plays the role of switch in the present embodiment, passes through the switching signal of single-chip I/O mouth The switch of three foot inductance L1 is controlled, and changes the sound pressure level of output sound by adjusting driving frequency.The piezo, the operatic tunes combine The structure of driving circuit designs, while improving sound pressure rank, additionally it is possible to greatly save installation cost.

Further, it is additionally provided with anti-excision structure 8 in the wireless smoke alarm of the present embodiment, can also specifically use Tongue tube or the form for contacting electrode.Referring to fig. 2 it is found that the anti-excision structure 8 can including anti-excision ontology 81 and anti-excision Reset switch 82, anti-excision can reset switch 82 connect with single-chip microcontroller.Anti- excision ontology 81 is set to bottom case as a pedestal On 13, anti-excision can reset switch 82 be set on circuit board, and anti-excision ontology 81 is set to the shell 12 in of bottom case 13 On on one side, anti-excision can reset switch 82 be set to circuit board 5 in the one side of shell 12.Bottom case 13 normally connects with middle shell 12 When connecing, anti-excision can reset switch 82 be in reset state, single-chip microcontroller will not be triggered, when bottom case 13 and middle shell 12 are picked-off, Single-chip microcontroller detects shift signal, issues and extracts alarm signal.

The working principle of wireless smoke alarm in the present embodiment is shown referring to Fig. 5, Fig. 5.As shown in Figure 5, this is wireless The course of work of smoke alarm specifically includes that system initialization, NB-IOT module initialization, key self-test, smoke collection, electricity Cell voltage acquisition, anti-excision signal acquisition and data transmission etc..System initialization is carried out first, and then judgement test key is No to press, if detecting that test key is in down state, LED light will issue light, and light guide ring issues highlighted light Band, while piezo issues the sound pressure level for enough reaching 80dB or more at 3 meters of the sound.Single-chip microcontroller acquires smoke signal, when for the first time When detecting that the AD value of smoke signal is more than the threshold value of setting, to prevent false alarm, wireless smoke alarm will not be immediately at this time Alarm signal is issued, waits 2S to detect the AD value of smoke signal again, if AD value is recognized still above the threshold value of setting at this time To there is fire alarm, alarm signal is issued.

The above is only the specific embodiment of the application, is made skilled artisans appreciate that or realizing this Shen Please.Various modifications to these embodiments will be apparent to one skilled in the art, as defined herein General Principle can be realized in other embodiments without departing from the spirit or scope of the application.Therefore, the application It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one The widest scope of cause.

Claims (7)

1. a kind of wireless smoke alarm based on NB-IOT communication characterized by comprising shell (1) is set to shell (1) external leaded light component (2), the optics labyrinth (3) for being set to enclosure interior, infrared tube (4), circuit board (5), sound group Part (6), 9V lithium battery (7) and test key, the infrared tube (4) are connect by optics labyrinth (3) with circuit board (5), The test key is set on circuit board (5), and the light-guiding pillar of the leaded light component (2) is located at right above test key and described Triggering test key, the circuit board (5) connect with 9V lithium battery (7) when leaded light component (2) is pressed；

Include: in the circuit board single-chip microcontroller, NB-IOT communication module and for smoke signal acquisition operational amplification circuit, The input terminal of the operational amplification circuit is connect with the reception pipe of the infrared tube, the output end of the operational amplification circuit with The input port AD of the single-chip microcontroller connects, and the output end of the single-chip microcontroller is connect with sound component and leaded light component respectively, described The output end of single-chip microcontroller is also connect by the NB-IOT communication module with remote server platform.

2. a kind of wireless smoke alarm based on NB-IOT communication according to claim 1, which is characterized in that described to lead Optical assembly (2) includes the light guide ring (21) being fixedly connected and light-guiding pillar (22), and the light-guiding pillar (22) is pressed and generates machinery Displacement touches test key, makes to test key in the state that is pressed.

3. a kind of wireless smoke alarm based on NB-IOT communication according to claim 1, which is characterized in that the electricity Battery sampling circuit is additionally provided in road plate (5), the input terminal of the battery sampling circuit is connect with 9V lithium battery, the battery The output end of sample circuit is connect with Chip Microcomputer A/D input port.

4. a kind of wireless smoke alarm based on NB-IOT communication according to claim 3, which is characterized in that described Battery sampling circuit includes triode BG6, and the emitter of triode BG6 is separately connected the anode and resistance R22 of 9V lithium battery One end, the base stage of the other end connecting triode BG6 of resistance R22, the base stage of triode BG6 also pass through a resistance R21 connection The base stage of the collector of triode BG5, the emitter ground connection of triode BG5, triode BG5 is single by a resistance R17 connection Piece machine AD input port BAEN；The collector of triode BG6 passes through the input port AD of a concatenated resistance R20 connection BATE, and It is grounded using the concatenated resistance R15 of a resistance R20.

5. a kind of wireless smoke alarm based on NB-IOT communication according to claim 1, which is characterized in that the shell Body (1) includes upper casing (11), middle shell (12) and bottom case (13)；

The leaded light component (2) is set to upper casing (11) top center, and circuit board is fixed on middle shell (12), and described The center of circuit board (5) opens up fluted, and the one side of the circuit board (5) connects the optics labyrinth (3) by groove, described Infrared tube (4) is set to the another side of the circuit board (5)；

The operatic tunes (62) of the 9V lithium battery (7) and sound component (6) is fixed on the middle shell (12), and 9V lithium electricity Pond (7) includes battery (71) and battery compartment (72)；

The bottom case (13) is screwed on middle shell (12) to be connect, and is fixedly connected between the middle shell (12) and upper casing (11).

6. a kind of wireless smoke alarm based on NB-IOT communication according to claim 5, which is characterized in that the sound Ringing component (6) includes piezo (61), the operatic tunes (62) and driving circuit, and the operatic tunes (62) is fixed on the middle shell (12), The piezo (61) is set on the operatic tunes (62), and the driving circuit is set on circuit board, and the circuit board is logical Overdrive circuit is connect with the piezo (61).

7. a kind of wireless smoke alarm based on NB-IOT communication according to claim 5, which is characterized in that the base Anti- excision structure (8) is additionally provided in the wireless smoke alarm of NB-IOT communication, the anti-excision structure (8) includes anti-plucks Except ontology (81) and anti-excision can reset switch (82), the anti-excision can reset switch (82) connect with the single-chip microcontroller, institute It states anti-excision ontology (81) and is set to the bottom case (13) in the one side of shell (12), the anti-excision can reset switch (82) circuit board (5) are set in the one side of shell (12), and prevent when the bottom case (13) is normally connect with middle shell (12) Extract can reset switch (82) be in reset state.