CN113465691B - Take fingerprint encryption NB thing networking gas table - Google Patents
Take fingerprint encryption NB thing networking gas table Download PDFInfo
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- CN113465691B CN113465691B CN202110612914.3A CN202110612914A CN113465691B CN 113465691 B CN113465691 B CN 113465691B CN 202110612914 A CN202110612914 A CN 202110612914A CN 113465691 B CN113465691 B CN 113465691B
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- 230000006855 networking Effects 0.000 title claims description 5
- 230000007246 mechanism Effects 0.000 claims abstract description 22
- 238000012544 monitoring process Methods 0.000 claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims description 16
- 238000004891 communication Methods 0.000 claims description 8
- 238000005485 electric heating Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 238000012546 transfer Methods 0.000 claims description 5
- 230000006978 adaptation Effects 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 239000003292 glue Substances 0.000 claims description 2
- 238000001514 detection method Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram 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
Classifications
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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
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Security & Cryptography (AREA)
- Theoretical Computer Science (AREA)
- Fluid Mechanics (AREA)
- Automation & Control Theory (AREA)
- Computer Hardware Design (AREA)
- Software Systems (AREA)
- General Engineering & Computer Science (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention relates to the technical field of intelligent gas meters, and discloses an encrypted NB (node b) internet of things gas meter with fingerprints, which comprises a first box body and a second box body, wherein an air outlet connecting pipe is communicated with the left side of the upper surface of the first box body, an electromagnetic valve is fixedly connected to the front of the air outlet connecting pipe, an air inlet connecting pipe is communicated with the right side of the upper surface of the first box body, a base is fixedly connected between the air outlet connecting pipe and the air 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 facilities around gas-cooker, when the user uses the gas to cook, wireless temperature sensor detects the numerical value and risees gradually, and when the user closes the fire, wireless temperature sensor's temperature fluctuation is extremely around, and the timing module timing, five minutes back of countdown, intelligent control unit control gas table valve is closed, can intelligently realize closing the gas table valve like this, avoids causing the gas to leak hidden danger.
Description
Technical Field
The invention relates to the technical field of intelligent gas meters, in particular to an NB (network of things) gas meter with fingerprint encryption.
Background
Along with the improvement of the living standard and living quality of people, the intelligent gas meter in China can promote the development of the intelligent gas meter towards the safety, reliability and intelligent convenience due to the intelligent product requirements of modern families. At present, domestic intelligent gas meters mainly comprise an IC card intelligent gas meter, a CPU card intelligent gas meter, a radio frequency card intelligent gas meter, a direct-reading remote transmission gas meter (wired remote transmission gas meter), a wireless remote transmission gas meter, an Internet of things intelligent gas meter and the like.
The traditional internet of things gas meter has the following disadvantages:
(1) The gas meter is frequently used in families, when the gas meter is used, a user needs to open a valve on the gas meter, so that a knob on the stove is unscrewed, gas can be used, after the gas meter is used, the user needs to unscrew the valve again, however, when a plurality of users use the gas meter, the user sometimes only closes the knob on the stove, and the valve on the gas meter is opened, so that the hidden danger of gas leakage exists;
(2) In many families, for attractive appearance, the gas meter is arranged in the cabinet, however, the cabinet is in a closed state for a long time, sometimes the humidity of the cabinet is related to the humidity of the gas meter, and the gas meter is easy to be damaged due to the humidity, so that the normal use of the kitchen is influenced;
(3) The gas meter on the market can realize paying in the home, so that the gas meter is convenient for users contacting the Internet, however, compared with the old people rarely contacting the Internet, the gas meter is troublesome in paying, is easy to make a chore, and needs to be improved in the gas meter with the fingerprint encryption NB Internet of things.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides the fingerprint encryption NB (electronic component) internet of things gas meter, which solves the problems in the background art.
(II) technical scheme
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a take fingerprint encryption NB thing networking gas table, includes first box and second box, the upper surface left side intercommunication of first box has the connecting pipe of giving vent to anger, the place ahead fixedly connected with solenoid valve of connecting pipe of giving vent to anger, the upper surface right side intercommunication of first box has the connecting pipe of admitting air, the upper surface of first box and be in the connecting pipe of giving vent to anger with fixedly connected with base between the connecting pipe of admitting air, moisture removal mechanism is installed to the top of base, moisture removal mechanism, the right side below fixedly connected with temperature and humidity transducer of first box, the front surface fixedly connected with of first box second box, the internally mounted of second box has intelligent control unit, NB-LOT communication module wireless remote transmission unit, storage module, timing module and information transfer unit, intelligent control unit is fit with monitoring mechanism and the solenoid valve, monitoring mechanism includes wireless temperature sensor, battery cover, rubber pad and film, wireless temperature sensor's right side detachable connection has moisture removal mechanism, the right side below fixedly connected with temperature sensor has the rubber pad, the second box has the surface fixedly connected with the second box, the rubber pad has the surface fixedly connected with the second box, the top of first box has the surface fixedly connected with the second box, the rubber pad has the surface fixedly connected with the second box, the fingerprint screen has the top of the first box rotates, the top of the first box has the rubber pad, the fingerprint is fixed with the top. The utility model discloses a fingerprint detection device, including connecting plate, fingerprint area, metal sheet, connecting plate, back surface top fixedly connected with magnetic sheet of the connecting plate, the front surface of first box is close to the top fixedly connected with sheetmetal of fingerprint area, the sheetmetal with the magnetic sheet adsorbs mutually, the front surface of first box is close to the left side fixedly connected with button of fingerprint area, the front surface below fixedly connected with battery compartment of first box.
Preferably, the dehumidifying mechanism comprises a fan, an air outlet pipe, an air inlet pipe and an electric heating wire, wherein 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 electric heating wire is fixedly connected with the inner side wall of the air inlet pipe and the inner side wall of the air outlet pipe.
Preferably, a power line is fixedly connected to the left side of the first box body, and the power line is electrically connected with the external power strip.
Preferably, the wireless temperature sensor is connected with the intelligent control unit bluetooth, the intelligent control unit with the storage module, solenoid valve electric connection, storage module with timing module electric connection.
Preferably, the back surface of the cover plate contacts with the fingerprint area, the fingerprint area is electrically connected with the intelligent control unit, the intelligent control unit is electrically connected with the information transmission unit, and the information transmission unit is electrically connected with the NB-LOT communication module wireless remote transmission unit.
Preferably, the fan and the heating wire are operated 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 adhered and fixed with the first box body.
Preferably, a voice module is installed in the first box body, and the voice module is electrically connected with the intelligent control unit.
(III) beneficial effects
The invention provides an NB (electronic commerce) internet of things gas meter with fingerprint encryption, which has the following beneficial effects:
(1) According to the invention, the monitoring mechanism is matched with the gas meter and consists of a wireless temperature sensor, a battery cover, a rubber pad and film paper, the second box body is internally provided with an intelligent control unit, a timing module, a storage module, an NB-LOT communication module wireless remote transmission unit and other structural elements, a user can paste the monitoring mechanism around the gas cooker, the user can feel fire temperature when opening the gas cooker, the monitoring structure is connected with the intelligent control unit Bluetooth, when the user uses gas to cook, the detection value of the wireless temperature sensor gradually rises, when the user closes the fire, the temperature of the wireless temperature sensor fluctuates greatly back and forth, the timing module counts time, and after five minutes of countdown, the intelligent control unit controls the gas meter valve to be closed, so that the hidden danger of gas leakage can be intelligently realized.
(2) According to the intelligent control system, the temperature and humidity sensor, the fan, the air outlet pipe, the air inlet pipe, the heating wire, the base and other structural elements are arranged, the temperature and humidity sensor detects the ambient temperature and humidity of the gas meter at any time, when detecting that the humidity reaches a set value, the intelligent control unit controls the fan and the heating wire to work, the fan operates to exhaust air and exhaust air, the heating wire heats the sucked air, moisture in the air is reduced, and when the humidity is lower than the set value, the fan automatically stops, so that the gas in the cabinet can be dehumidified, and the damage to the gas meter caused by the moisture can be avoided.
(3) According to the invention, through the arrangement of 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 balance, payment and other data through the second display screen, during the payment period, the user can place fingers in the fingerprint area to pay, after the payment, the payment is displayed in a zero way, the operation of the old is convenient and simple, the fingerprint can be realized, and the possibility of payment errors can also be avoided.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic plan view of the cover plate of FIG. 1 opened in accordance with the present invention;
FIG. 3 is a schematic view showing the internal structure of the second case of 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 an enlarged schematic cross-sectional view of the outlet duct of FIG. 1 in accordance with the present invention;
fig. 6 is an enlarged schematic view of the structure of fig. 1 at a.
In the figure: 100. a dehumidifying 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 blower; 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. an 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. heating wires; 28. a metal sheet; 29. and (5) connecting a plate.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1-6, the present invention provides a technical solution: the utility model provides a take fingerprint encryption NB thing networking gas table, including first box 13 and second box 12, the upper surface left side intercommunication of first box 13 has the connecting pipe that gives vent to anger 4, the place ahead fixedly connected with solenoid valve 5 of connecting pipe that gives vent to anger, the upper surface right side intercommunication of first box 13 has the connecting pipe that admits air 11, the upper surface of first box 13 just is in the connecting pipe that gives vent to anger 4 and the connecting pipe that admits air 11 between fixedly connected with base 6, moisture removal mechanism 100 is installed to the top of base 6, moisture removal mechanism 100, the right side below of first box 13 fixedly connected with temperature and humidity sensor 15, the front surface fixedly connected with second box 12 of first box 13, the internally mounted of second box 12 has intelligent control unit 18, NB-LOT communication module wireless remote transmission unit 19, a storage module 20, timing module 21 and information transmission unit 22, intelligent control unit 18 adaptation has monitoring mechanism 200 and solenoid valve 5, the monitoring mechanism 200 comprises a wireless temperature sensor 23, a battery cover 24, a rubber pad 25 and a film paper 26, wherein 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 film paper 26 is stuck below the rubber pad 25, the 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 12 from left to right, the first display screen 3 and the second display screen 10 are respectively fixedly connected with the first box 13, the middle part of the front surface of the first box 13 is fixedly connected with a fingerprint area 16, the lower part of the front surface of the first box 13 close to the fingerprint area 16 is rotationally connected with a cover plate 14 through a hinge, the top of the cover plate 14 is fixedly connected with a connecting plate 29, the magnetic sheet 17 is fixedly connected to the upper portion 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 13, the metal sheet 28 is adsorbed with 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 13, the battery compartment 1 is fixedly connected to the lower portion of the front surface of the first box 13, the timing module 21 is used for closing the timing electromagnetic valve 5 and counting down on one hand, and on the other hand, sometimes a user turns off fire after using for a few seconds, and the like, so that the possibility of false closing can be avoided.
Further, the dehumidifying mechanism 100 comprises a fan 7, an air outlet pipe 8, an air inlet pipe 9 and an electric heating wire 27, the fan 7 is detachably connected to the upper surface of the base 6 through bolts, the air outlet pipe 8 is communicated with the front of the fan 7, the air inlet pipe 9 is communicated with the right end of the fan 7, the electric heating wire 27 is fixedly connected to the inner side walls of the air inlet pipe 9 and the air outlet pipe 8, and the electric heating wire 27 also works when the fan 7 runs, so that the air can be dehumidified and the humidity is reduced.
Further, the left side fixedly connected with power cord of first box 13, power cord and outside row's of inserting electric connection can be through the external power supply when using to the gas table, also can install the battery on the gas table, can supply the table interior electric component to use.
Further, the wireless temperature sensor 23 is connected with the intelligent control unit 18 by 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 detection value in the storage module 20 through the intelligent control unit 18, when the value fluctuation is extremely large, the gas stove is indicated to be closed, the gas meter is not used, at this time, the timing module 21 counts down for five minutes, and then the electromagnetic valve 5 is controlled to be automatically closed.
Further, the back surface of the cover plate 14 contacts with the fingerprint area 16, the fingerprint area 16 is electrically connected with the intelligent control unit 18, the intelligent control unit 18 is electrically connected with the information transmission unit 22, the information transmission unit 22 is electrically connected with the wireless remote transmission unit 19 of the NB-LOT communication module, the fingerprint area 16 can record the fingerprint of the user, and the gas payment of the old can be facilitated through fingerprint identification.
Further, the fan 7 is operated in synchronization with the heating wire 27.
Further, 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 fixed with first box 13 paste, and the bed course is flexible material, can reduce the gas table and break.
Further, the first box 13 has a voice module installed therein, and the voice module is electrically connected to the intelligent control unit 18, and after the user pays the fee successfully, the voice module can make a sound: the user can know that the payment is completed.
To sum up, the workflow of the invention: firstly, the user can prestore some money in the self-meter at the gas service place, when the user needs to pay at the follow-up self-time, the user can open the cover plate 14, press the finger at the fingerprint area 16, so that the fingerprint payment at home can be realized, for the old people, the cost is avoided to pay other people very well, after paying, the user can prompt that the payment is successful, when gas is used at ordinary times, the electromagnetic valve 5 can be opened by pressing the button 2, after using, the detection value of the wireless temperature sensor 23 is gradually increased, when the user closes the fire, the temperature of the wireless temperature sensor 23 fluctuates greatly before and after, when the timing module 21 is counted down for five minutes, the intelligent control unit 18 controls the gas meter electromagnetic valve 5 to be closed, so that the gas meter electromagnetic valve 5 can be intelligently closed, the hidden danger caused by gas leakage is avoided, when the temperature and humidity sensor 15 detects that the humidity around the gas meter is moist, when the humidity is detected to reach the humidity set value, the intelligent control unit 18 controls the fans 7 and 27 to work, the fans 7 operate to exhaust and exhaust air, the humidity is reduced, and the humidity of the air is automatically reduced, and the humidity of the air is reduced to the humidity is lower than the set value, and the humidity of the fan 7 is stopped when the humidity is lower than the set.
It is noted that relational terms such as first and second, and the like are 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. Moreover, 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 understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein 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 utility model discloses a wireless temperature and humidity sensor, including wireless battery cover (24), wireless cover (24) and wireless cover (23) are equipped with, the upper surface left side intercommunication of first box (13) has air outlet connection pipe (4), the place ahead fixedly connected with solenoid valve (5) of air outlet connection pipe (4), the upper surface right side intercommunication of first box (13) has air inlet connection pipe (11), the upper surface of first box (13) just is in air outlet connection pipe (4) with fixedly connected with base (6) between air inlet connection pipe (11), moisture removal mechanism (100) are installed to the top of base (6), moisture removal mechanism (100), moisture removal mechanism (200), the right side below fixedly connected with of first box (13) temperature and humidity sensor (15), the front surface fixedly connected with of first box (13) second box (12), the internally mounted of second box (12) has intelligent control unit (18), NB-LOT communication module wireless remote sensing unit (19), memory module (20), timing module (21) and information transfer unit (22), intelligent control unit (18) adaptation mechanism (200), monitoring mechanism (24), wireless cover (24) and wireless 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, film paper (26) is stuck below the rubber pad (25), the 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 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 fixedly connected with the first box (13), a fingerprint area (16) is fixedly connected in the middle of the front surface of the first box (13), the front surface of the first box (13) is close to the fingerprint area (16), a cover plate (14) is connected below the fingerprint area (16) through hinge rotation, a magnetic sheet (17) is fixedly connected above the rear surface of the second box (12), a metal sheet (28) is fixedly connected with the front surface of the first box (13) and a metal sheet (28) is close to the front surface of the first box (13), and a battery compartment (1) is fixedly connected below the front surface of the first box body (13).
2. The fingerprint-encrypted NB internet of things gas meter according to claim 1, wherein: the dehumidifying mechanism (100) comprises a fan (7), an air outlet pipe (8), an air inlet pipe (9) and an electric heating wire (27), wherein the upper surface of the base (6) is detachably connected with the fan (7) through bolts, the front of the fan (7) is communicated with the air outlet pipe (8), the right end of the fan (7) is communicated with the air inlet pipe (9), and the air inlet pipe (9) and the inner side wall of the air outlet pipe (8) are fixedly connected with the electric heating wire (27).
3. The fingerprint-encrypted NB internet of things gas meter according to claim 1, wherein: the left side of first box (13) fixedly connected with power cord, power cord and outside row of inserting electric connection.
4. The fingerprint-encrypted NB internet of things gas meter according to claim 1, wherein: 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 fingerprint-encrypted NB internet of things gas meter according to claim 1, wherein: the back surface of apron (14) with fingerprint district (16) is contacted, 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 fingerprint-encrypted NB internet of things gas meter according to claim 2, wherein: the fan (7) and the heating wire (27) synchronously run.
7. The fingerprint-encrypted NB internet of things gas meter according to claim 1, wherein: the upper part of the air outlet connecting pipe (4) is detachably connected with a household gas pipe, and the upper part of the air inlet connecting pipe (11) is communicated with a municipal gas pipe.
8. The fingerprint-encrypted NB internet of things gas meter according to claim 1, wherein: 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 fingerprint-encrypted NB internet of things gas meter according to claim 1, wherein: the voice module is arranged in the first box body (13), and the voice module is electrically connected with the intelligent control unit (18).
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| Application Number | Priority Date | Filing Date | Title |
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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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| CN113465691B true CN113465691B (en) | 2024-03-26 |
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| 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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