CN113465691A - Take fingerprint to encrypt NB thing networking gas table - Google Patents
Take fingerprint to encrypt NB thing networking gas table Download PDFInfo
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- CN113465691A CN113465691A CN202110612914.3A CN202110612914A CN113465691A CN 113465691 A CN113465691 A CN 113465691A CN 202110612914 A CN202110612914 A CN 202110612914A CN 113465691 A CN113465691 A CN 113465691A
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- 230000006855 networking Effects 0.000 title claims description 4
- 230000007246 mechanism Effects 0.000 claims abstract description 20
- 238000012544 monitoring process Methods 0.000 claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 8
- 238000012546 transfer Methods 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 6
- 239000010409 thin film Substances 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 238000005485 electric heating Methods 0.000 claims description 2
- 239000010408 film Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 206010010904 Convulsion Diseases 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000036461 convulsion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/005—Valves
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D22/00—Control of humidity
- G05D22/02—Control of humidity characterised by the use of electric means
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
- G06F21/31—User authentication
- G06F21/32—User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
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- Computer Security & Cryptography (AREA)
- Theoretical Computer Science (AREA)
- Automation & Control Theory (AREA)
- Computer Hardware Design (AREA)
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Abstract
The invention relates to the technical field of intelligent gas meters, and discloses a gas meter with a fingerprint encryption NB (network b) internet of things, which comprises a first box body and a second box body, wherein the left side of the upper surface of the first box body is communicated with a gas outlet connecting pipe, a solenoid valve is fixedly connected in front of the gas outlet connecting pipe, the right side of the upper surface of the first box body is communicated with a gas inlet connecting pipe, a base is fixedly connected between the gas outlet connecting pipe and the gas inlet connecting pipe on the upper surface of the first box body, and a dehumidifying mechanism is arranged above the base; the user can paste monitoring mechanism around the gas-cooker, and when the user used the gas to cook, wireless temperature sensor detected numerical value rised gradually, and when the user closed the fire, wireless temperature sensor's temperature fluctuation was very big around, and the timing module timing, after five minutes in the countdown, intelligent control unit control gas table valve was closed, can realize closing gas table valve by intelligence like this, avoids causing gas leakage hidden danger.
Description
Technical Field
The invention relates to the technical field of intelligent gas meters, in particular to an NB (nuclear B) Internet of things gas meter with fingerprint encryption.
Background
Along with the improvement of living standard and living quality of people, the intelligent gas meter in China is promoted to develop towards the directions of safety, reliability and intelligent convenience by the intelligent product requirements required by modern families. At present, the domestic intelligent gas meters mainly include IC card intelligent gas meters, CPU card intelligent gas meters, radio frequency card intelligent gas meters, direct-reading remote gas meters (wired remote gas meters), wireless remote gas meters, internet of things intelligent gas meters and the like.
The traditional Internet of things gas meter has the following defects:
(1) when the gas meter is used, a user needs to open a valve on the gas meter, so that a knob on a stove is unscrewed, the gas can be used, and after the gas meter is used, the user needs to unscrew the valve again;
(2) in many families, the gas meter is installed in the cabinet for beauty, but the cabinet is in a closed state for a long time, sometimes, the cabinet is wet and the gas meter is wet and damaged easily, and normal use of a kitchen is affected;
(3) the gas table on the market now can realize paying at the family, and is nothing more convenient to the user who contacts the internet like this, however, the contrast is few to contact the old person of internet, and it is troublesome to pay fee, and it is clumsy to make things easy for, has to improve a take fingerprint encryption NB thing networking gas table.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the NB internet of things gas meter with fingerprint encryption, and solves the problems in the background technology.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: a fingerprint encryption type NB internet of things gas meter comprises a first box body and a second box body, wherein the left side of the upper surface of the first box body is communicated with a gas outlet connecting pipe, a solenoid valve is fixedly connected in front of the gas outlet connecting pipe, the right side of the upper surface of the first box body is communicated with a gas inlet connecting pipe, the upper surface of the first box body is positioned between the gas outlet connecting pipe and the gas inlet connecting pipe, a base is fixedly connected with the upper part of the base, a dehumidifying mechanism is installed above the base, a temperature and humidity sensor is fixedly connected with the lower part of the right side of the first box body, the front surface of the first box body is fixedly connected with the second box body, an intelligent control unit, an NB-LOT communication module wireless remote transmission unit, a storage module, a timing module and an information transmission unit are installed inside the second box body, the intelligent control unit is matched with a monitoring mechanism and the solenoid valve, the monitoring mechanism comprises a wireless temperature sensor, a battery cover, a rubber pad and film paper, the battery cover is detachably connected to the right side of the wireless temperature sensor, the rubber pad is fixedly connected to the bottom of the wireless temperature sensor, the adhesive glue is arranged on the lower surface of the rubber pad, the film paper is adhered to the lower side of the rubber pad and detachably connected with the rubber pad, a first display screen and a second display screen are sequentially embedded from left to right above the front surface of the second box body, the first display screen and the second display screen are respectively and fixedly connected with the first box body, a fingerprint area is fixedly connected to the middle of the front surface of the first box body, a cover plate is rotatably connected to the lower part, close to the fingerprint area, of the front surface of the first box body through hinges, a connecting plate is fixedly connected to the top of the cover plate, and a magnetic sheet is fixedly connected to the upper part of the rear surface of the connecting plate, the front surface of first box is close to the top fixedly connected with sheetmetal in fingerprint district, the sheetmetal with the magnet adsorbs mutually, the front surface of first box is close to the left side fixedly connected with button in fingerprint district, the front surface below fixedly connected with battery compartment of first box.
Preferably, the moisture removing mechanism comprises a fan, an air outlet pipe, an air inlet pipe and a heating wire, the upper surface of the base is detachably connected with the fan through a bolt, the air outlet pipe is communicated with the front of the fan, the air inlet pipe is communicated with the right end of the fan, and the air inlet pipe is fixedly connected with the inner side wall of the air outlet pipe and the heating wire.
Preferably, the left side of the first box body is fixedly connected with a power line, and the power line is electrically connected with an external power strip.
Preferably, the wireless temperature sensor is connected with the intelligent control unit through Bluetooth, the intelligent control unit is electrically connected with the storage module and the electromagnetic valve, and the storage module is electrically connected with the timing module.
Preferably, the rear surface of apron with the fingerprint district contacts, the fingerprint district with intelligent control unit electric connection, intelligent control unit with information transfer unit electric connection, information transfer unit with the wireless teletransmission unit electric connection of NB-LOT communication module.
Preferably, the fan and the heating wire operate synchronously.
Preferably, the top of the air outlet connecting pipe is detachably connected with a household gas pipe, and the top of the air inlet connecting pipe is communicated with a municipal gas pipe.
Preferably, a cushion layer is arranged on the lower surface of the first box body, and the cushion layer is fixedly adhered to the first box body.
Preferably, the inside of the first box body is provided with a voice module, and the voice module is electrically connected with the intelligent control unit.
(III) advantageous effects
The invention provides a NB (NB) internet of things gas meter with fingerprint encryption, which has the following beneficial effects:
(1) in the invention, the gas meter is adapted with the monitoring mechanism which consists of a wireless temperature sensor, a battery cover, a rubber pad and thin film paper, the intelligent control unit, the timing module, the storage module, the NB-LOT communication module wireless remote transmission unit and other structural elements are arranged in the second box body, a user can stick the monitoring mechanism around the gas stove, the gas stove can be opened by a user to sense the fire temperature, the monitoring structure is connected with the intelligent control unit through Bluetooth, when a user uses gas to cook, the detection value of the wireless temperature sensor gradually rises, when the user closes the fire, the fluctuation of the temperature of the wireless temperature sensor is great, the timing module times, after counting down for five minutes, the intelligent control unit controls the gas meter valve to be closed, so that the gas meter valve can be intelligently closed, and the hidden danger of gas leakage is avoided.
(2) According to the invention, through arranging the temperature and humidity sensor, the fan, the air outlet pipe, the air inlet pipe, the heating wire, the base and other structural elements, the temperature and humidity sensor constantly detects the ambient temperature and humidity of the gas meter, when the detected humidity reaches a set value, the intelligent control unit can control the fan and the heating wire to work, the fan operates to exhaust air and exhaust air, the heating wire heats the pumped air and reduces the moisture in the air, and when the humidity is lower than a set value, the fan automatically stops, so that the gas in a cabinet can be dehumidified, and the gas meter can be prevented from being damaged due to dampness.
(3) According to the invention, by arranging the cover plate, the fingerprint area, the magnetic sheet, the connecting plate, the metal sheet, the information transmission unit and other structural elements, a user can see data such as balance, payment due and the like through the second display screen, during payment, the user can place a finger in the fingerprint area to pay the fee, after payment, the display screen displays zero when the user pays the fee, the payment is convenient and simple for the old, the fingerprint can be used, and the possibility of payment error can be avoided.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic plan view of the cover of FIG. 1 after opening;
FIG. 3 is a schematic view of the internal structure of the second casing shown in FIG. 2 according to the present invention;
FIG. 4 is a schematic diagram of a wireless temperature sensor according to the present invention;
FIG. 5 is a schematic sectional view of an enlarged structure of the outlet pipe shown in FIG. 1 according to the present invention;
fig. 6 is an enlarged schematic view of the invention at a in fig. 1.
In the figure: 100. a moisture removal mechanism; 200. a monitoring mechanism; 1. a battery compartment; 2. a button; 3. a first display screen; 4. an air outlet connecting pipe; 5. an electromagnetic valve; 6. a base; 7. a fan; 8. an air outlet pipe; 9. an air inlet pipe; 10. a second display screen; 11. an air inlet connecting pipe; 12. a second case; 13. a first case; 14. a cover plate; 15. a temperature and humidity sensor; 16. a fingerprint area; 17. a magnetic sheet; 18. an intelligent control unit; 19. the NB-LOT communication module wireless remote transmission unit; 20. a storage module; 21. a timing module; 22. an information transfer unit; 23. a wireless temperature sensor; 24. a battery cover; 25. a rubber pad; 26. film paper; 27. an electric heating wire; 28. a metal sheet; 29. a connecting plate.
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.
As shown in fig. 1 to 6, the present invention provides a technical solution: a fingerprint encryption type NB internet of things gas meter comprises a first box body 13 and a second box body 12, wherein the left side of the upper surface of the first box body 13 is communicated with a gas outlet connecting pipe 4, the front of the gas outlet connecting pipe 4 is fixedly connected with an electromagnetic valve 5, the right side of the upper surface of the first box body 13 is communicated with a gas inlet connecting pipe 11, the upper surface of the first box body 13 is fixedly connected with a base 6 between the gas outlet connecting pipe 4 and the gas inlet connecting pipe 11, a dehumidifying mechanism 100 is installed above the base 6, the dehumidifying mechanism 100 is installed, the right lower side of the first box body 13 is fixedly connected with a temperature and humidity sensor 15, the front surface of the first box body 13 is fixedly connected with the second box body 12, an intelligent control unit 18, an NB-LOT communication module wireless remote transmission unit 19, a storage module 20, a timing module 21 and an information transmission unit 22 are installed inside the second box body 12, the intelligent control unit 18 is matched with a monitoring mechanism 200 and the electromagnetic valve 5, the monitoring mechanism 200 comprises a wireless temperature sensor 23, a battery cover 24, a rubber pad 25 and a piece of film paper 26, the battery cover 24 is detachably connected to the right side of the wireless temperature sensor 23, the rubber pad 25 is fixedly connected to the bottom of the wireless temperature sensor 23, the lower surface of the rubber pad 25 is provided with adhesive glue, the piece of film paper 26 is adhered to the lower side of the rubber pad 25, the piece of film paper 26 is detachably connected to the rubber pad 25, a first display screen 3 and a second display screen 10 are sequentially embedded from left to right above the front surface of the second box 12, the first display screen 3 and the second display screen 10 are respectively and fixedly connected to the first box 13, a fingerprint area 16 is fixedly connected to the middle of the front surface of the first box 13, a cover plate 14 is rotatably connected to the lower side of the front surface of the first box 13, a connecting plate 29 is fixedly connected to the top of the cover plate 14, a magnetic sheet 17 is fixedly connected to the upper side of the rear surface of the connecting plate 29, the metal sheet 28 is fixedly connected to the upper portion, close to the fingerprint area 16, of the front surface of the first box body 13, the metal sheet 28 is adsorbed to the magnetic sheet 17, the button 2 is fixedly connected to the left side, close to the fingerprint area 16, of the front surface of the first box body 13, the battery bin 1 is fixedly connected to the lower portion of the front surface of the first box body 13, the timing module 21 is used for timing the electromagnetic valve 5 to be closed and counted down, and on the other hand, a user can be turned off after using the timing module, and the timing module can be used for several seconds, so that the possibility of error turning off can be avoided.
Further, remove damp mechanism 100 and include fan 7, outlet duct 8, intake pipe 9 and heating wire 27, the upper surface of base 6 can be dismantled through the bolt and be connected with fan 7, the place ahead intercommunication of fan 7 has outlet duct 8, the right-hand member intercommunication of fan 7 has intake pipe 9, and the inside wall fixedly connected with heating wire 27 of intake pipe 9 and outlet duct 8, when fan 7 moves, heating wire 27 also is working, can remove the tide in the air, reduces the moisture.
Further, the left side fixedly connected with power cord of first box 13, power cord and outside row electric connection of inserting, the gas table can be through external power supply when using, also can install the battery on the gas table, can supply the interior electric component of table to use.
Further, the wireless temperature sensor 23 is connected with the intelligent control unit 18 through Bluetooth, the intelligent control unit 18 is electrically connected with the storage module 20 and the electromagnetic valve 5, the storage module 20 is electrically connected with the timing module 21, the wireless temperature sensor 23 stores the detected value in the storage module 20 through the intelligent control unit 18, when the fluctuation of the value is extremely large, the gas furnace is indicated to be closed, the gas meter is not used, at the moment, the timing module 21 counts down for five minutes, and then the electromagnetic valve 5 is controlled to be automatically closed.
Further, the rear surface of apron 14 contacts with fingerprint district 16, fingerprint district 16 and the 18 electric connection of intelligent control unit, intelligent control unit 18 and information transfer unit 22 electric connection, information transfer unit 22 and the wireless teletransmission unit 19 electric connection of NB-LOT communication module, and user's fingerprint can be typeeed in fingerprint district 16, can do benefit to old person's gas through fingerprint identification and collect fee.
Further, the fan 7 operates in synchronization with the heating wire 27.
Furthermore, the top of the air outlet connecting pipe 4 is detachably connected with a household gas pipe, and the top of the air inlet connecting pipe 11 is communicated with a municipal gas pipe.
Further, the lower surface of first box 13 is equipped with the bed course, and the bed course is pasted fixedly with first box 13, and the bed course is flexible material, can reduce the gas table and break.
Further, the internally mounted of first box 13 has voice module, and voice module and the 18 electric connection of intelligent control unit, after the user successfully collects fee, voice module can make a sound: the user can know that the payment is finished when the payment is successful.
In conclusion, the working process of the invention is as follows: firstly, a user can pre-store some money in a self-meter at a gas service place, when the user needs to pay at the subsequent home, the user can open the cover plate 14 and press a finger on the fingerprint area 16, so that the fingerprint at home can be paid, the user can conveniently and quickly avoid paying the cost to other families, after the payment, the user can prompt that the payment is successful, when the user uses gas at ordinary times, the user can press the button 2 to open the electromagnetic valve 5, after the use, the detection value of the wireless temperature sensor 23 is gradually increased, when the user closes the fire, the temperature fluctuation of the wireless temperature sensor 23 is great, when the timing module counts 21, after counting down for five minutes, the intelligent control unit 18 controls the electromagnetic valve 5 to be closed, thus the gas meter can be intelligently closed, the hidden danger of gas leakage is avoided, when the temperature and humidity sensor 15 detects the humidity around the gas meter, when detecting that humidity reaches the setting value, intelligent control unit 18 can control fan 7 and heating wire 27 work, and fan 7 operation carries out convulsions and air-out, and heating wire 27 heats the air of suction, reduces moisture in the air, and when humidity was less than the setting value, fan 7 automatic stop.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a take fingerprint encryption NB thing networking gas table, includes first box (13) and second box (12), its characterized in that: the upper surface left side intercommunication of first box (13) has connecting pipe (4) of giving vent to anger, the place ahead fixedly connected with solenoid valve (5) of connecting pipe (4) of giving vent to anger, the upper surface right side intercommunication of first box (13) has connecting pipe (11) of admitting air, the upper surface of first box (13) just is in give vent to anger connecting pipe (4) with fixedly connected with base (6) between connecting pipe (11) of admitting air, except that damp mechanism (100) are installed to the top of base (6), except that damp mechanism (100), the right side below fixedly connected with temperature and humidity sensor (15) of first box (13), the preceding fixed surface of first box (13) is connected with second box (12), the internally mounted of second box (12) has intelligent control unit (18), NB-LOT communication module wireless teletransmission unit (19), The intelligent control device comprises a storage module (20), a timing module (21) and an information transmission unit (22), wherein the intelligent control unit (18) is adapted with a monitoring mechanism (200) and the electromagnetic valve (5), the monitoring mechanism (200) comprises a wireless temperature sensor (23), a battery cover (24), a rubber pad (25) and thin film paper (26), the right side of the wireless temperature sensor (23) is detachably connected with the battery cover (24), the bottom of the wireless temperature sensor (23) is fixedly connected with the rubber pad (25), the lower surface of the rubber pad (25) is provided with adhesive glue, the thin film paper (26) is pasted below the rubber pad (25), the thin film paper (26) is detachably connected with the rubber pad (25), a first display screen (3) and a second display screen (10) are sequentially embedded above the front surface of the second box body (12) from left to right, the first display screen (3) and the second display screen (10) are respectively and fixedly connected with the first box body (13), the middle part of the front surface of the first box body (13) is fixedly connected with a fingerprint area (16), the front surface of the first box body (13) is connected with a cover plate (14) through a hinge in a rotating way near the lower part of the fingerprint area (16), the top of the cover plate (14) is fixedly connected with a connecting plate (29), a magnetic sheet (17) is fixedly connected above the rear surface of the connecting plate (29), a metal sheet (28) is fixedly connected to the front surface of the first box body (13) close to the upper part of the fingerprint area (16), the metal sheet (28) and the magnetic sheet (17) are adsorbed, the button (2) is fixedly connected to the left side of the front surface of the first box body (13) close to the fingerprint area (16), and a battery bin (1) is fixedly connected below the front surface of the first box body (13).
2. The NB internet of things gas meter with fingerprint encryption of claim 1, characterized in that: remove damp mechanism (100) and include fan (7), outlet duct (8), intake pipe (9) and heating wire (27), the upper surface of base (6) can be dismantled through the bolt and be connected with fan (7), the place ahead intercommunication of fan (7) has outlet duct (8), the right-hand member intercommunication of fan (7) has intake pipe (9), just intake pipe (9) with the inside wall fixedly connected with of outlet duct (8) heating wire (27).
3. The NB internet of things gas meter with fingerprint encryption of claim 1, characterized in that: the left side fixedly connected with power cord of first box (13), the power cord is connected with outside row's of inserting electric property.
4. The NB internet of things gas meter with fingerprint encryption of claim 1, characterized in that: the wireless temperature sensor (23) is connected with the intelligent control unit (18) through Bluetooth, the intelligent control unit (18) is electrically connected with the storage module (20) and the electromagnetic valve (5), and the storage module (20) is electrically connected with the timing module (21).
5. The NB internet of things gas meter with fingerprint encryption of claim 1, characterized in that: the rear surface of apron (14) with fingerprint district (16) contacts, fingerprint district (16) with intelligent control unit (18) electric connection, intelligent control unit (18) with information transfer unit (22) electric connection, information transfer unit (22) with NB-LOT communication module wireless remote transmission unit (19) electric connection.
6. The NB internet of things gas meter with fingerprint encryption of claim 2, characterized in that: the fan (7) and the electric heating wire (27) run synchronously.
7. The NB internet of things gas meter with fingerprint encryption of claim 1, characterized in that: the top of connecting pipe (4) of giving vent to anger can dismantle and be connected with family's gas pipe, the top intercommunication of connecting pipe (11) of admitting air has municipal gas pipe.
8. The NB internet of things gas meter with fingerprint encryption of claim 1, characterized in that: the lower surface of the first box body (13) is provided with a cushion layer, and the cushion layer is fixedly adhered to the first box body (13).
9. The NB internet of things gas meter with fingerprint encryption of claim 1, characterized in that: the inside mounting of first box (13) has voice module, voice module with intelligent control unit (18) electric connection.
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| CN202110612914.3A CN113465691B (en) | 2021-06-02 | 2021-06-02 | Take fingerprint encryption NB thing networking gas table |
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| CN202110612914.3A CN113465691B (en) | 2021-06-02 | 2021-06-02 | Take fingerprint encryption NB thing networking gas table |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114179178A (en) * | 2021-12-13 | 2022-03-15 | 湖南宏森新材料科技有限责任公司 | Aldehyde-free flame-retardant spliced plywood and preparation process thereof |
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| CN113465691B (en) | 2024-03-26 |
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