CN214473556U

CN214473556U - Wireless remote-reading Internet of things ammeter based on NB-Iot

Info

Publication number: CN214473556U
Application number: CN202120049589.XU
Authority: CN
Inventors: 虞森龙; 王芬芬; 王富源; 周蓉; 韩薇佳; 杨海娟
Original assignee: Zhejiang Rongda Electric Power Engineering Co ltd
Current assignee: Zhejiang Rongda Electric Power Engineering Co ltd
Priority date: 2021-01-09
Filing date: 2021-01-09
Publication date: 2021-10-22
Anticipated expiration: 2031-01-09

Abstract

The utility model discloses a wireless remote-reading Internet of things ammeter based on NB-Iot, which comprises a shell, a PCB, a power module arranged on the PCB, a metering module connected with the power module, a signal sampling module connected with the metering module, an NB-IOT communication module, an RS485 interface connected with the NB-IOT communication module and a USIM card module; the device is characterized in that the shell comprises a bottom shell and a top cover, and a sealing structure is arranged on the bottom shell; the bottom shell is also provided with a wiring terminal installation groove, and a sealing cover is arranged on the wiring terminal installation groove; and the top cover is also movably provided with a battery protection structure. The utility model enables the ammeter to realize remote wireless communication, saves intermediate equipment and reduces cost; the sealing performance of the shell is improved through the arrangement of the sealing structure, the safety is improved, and the potential safety hazard is reduced; through the setting of battery protective structure, the dismouting battery of being convenient for, and the battery can not taken out by mistake easily.

Description

Wireless remote-reading Internet of things ammeter based on NB-Iot

Technical Field

The utility model relates to an ammeter specifically indicates a wireless thing networking ammeter of copying far based on NB-Iot.

Background

The communication of the existing electric meter is realized by an RS485 and a power carrier module, the communication speed and the reliability of the power carrier module are extremely poor, the RS485 communication needs to be wired, and the installation and maintenance cost is high; due to the structure of the existing electric meter, the electric meter cannot be realized through wireless data transmission, meanwhile, the existing wireless communication technologies such as GPRS, CDMA and LTE cause the equipment cost and the communication use cost to be too high, and the LORA and WIFI transmission distances are not far, so that large-area coverage cannot be realized; the electric meter relates to electricity, and common electric meters are located outdoors, so that the sealing of the electric meter is particularly important, leakage can cause leakage short circuit to generate safety hazard, and the conventional electric meter shell is only fixedly connected through screws, so that certain water leakage risk is realized; at present, batteries are arranged in power supply modules of a plurality of electric meters, when the batteries are used up and need to be replaced, the whole shell needs to be disassembled, and then the batteries are replaced, so that the electric meters are very troublesome and have certain potential safety hazards. Therefore, an NB-Iot-based wireless remote reading Internet of things ammeter is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the above problem and providing a wireless far reading thing networking ammeter based on NB-Iot.

In order to achieve the purpose, the utility model provides a wireless remote copy internet of things ammeter based on NB-Iot, which comprises a shell, a PCB, a power module arranged on the PCB, a metering module connected with the power module, a signal sampling module connected with the metering module, an NB-IOT communication module, an RS485 interface connected with the NB-IOT communication module and a USIM card module; the device is characterized in that the shell comprises a bottom shell and a top cover, and a sealing structure is arranged on the bottom shell; the bottom shell is also provided with a wiring terminal installation groove, and a sealing cover is arranged on the wiring terminal installation groove; and the top cover is also movably provided with a battery protection structure.

Further preferably, the battery protection structure comprises a battery cover plate and a protection plate movably mounted on the top cover, and the protection plate is located above the battery cover plate; still be equipped with the battery mounting bracket on the PCB board, power module contains the battery of installing on the battery mounting bracket and with PCB board electric connection, the battery position corresponds with battery cover plate position.

Preferably, one end of the battery cover plate is movably connected with the top cover, and the other end of the battery cover plate is connected with the top cover in a clamping manner; protection plate one end and top cap swing joint are equipped with the fixed block on the other end, be equipped with the fixed slot with fixed block looks adaptation on the top cap, pass through screw fixed connection between fixed block and the fixed slot.

Further preferably, the sealing structure comprises a sealing groove arranged on the bottom shell and a sealing strip installed in the sealing groove; the top cover and the sealing cover are respectively provided with a sealing block matched with the sealing groove; the top cover and the sealing cover are fixedly connected through screws after being matched with the bottom shell through the sealing blocks and the sealing grooves.

Further preferably, the bottom shell is further provided with a plurality of clamping grooves, and the top cover and the sealing cover are further provided with clamping blocks matched with the clamping grooves.

Further preferably, a guide groove is further formed in the top cover, and a guide block matched with the guide groove is arranged on the sealing cover.

Preferably, the PCB is further provided with a communication control module, and the housing is further provided with an antenna connected with the communication control module; the PCB is provided with an isolation module, one end of the isolation module is connected with the RS485 interface, and the other end of the isolation module is connected with the metering module.

Further preferably, the PCB board is further provided with a relay and a display module connected with the metering module.

The utility model enables the ammeter to realize remote wireless communication, saves intermediate equipment and reduces cost; the sealing performance of the shell is improved through the arrangement of the sealing structure, the safety is improved, and the potential safety hazard is reduced; through the setting of battery protective structure, the dismouting battery of being convenient for, and the battery can not taken out by mistake easily.

Drawings

FIG. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of a partial structure of the present invention;

FIG. 3 is a schematic view of the cross-sectional structure of the middle top cover of the present invention;

fig. 4 is a schematic diagram of the present invention.

Illustration of the drawings: 1. a housing; 2. a PCB board; 21. a battery mounting bracket; 22. a battery; 3. a bottom case; 31. a wiring terminal mounting groove; 32. sealing the cover; 33. a guide block; 34. a card slot; 4. a top cover; 41. fixing grooves; 42. a clamping block; 43. a guide groove; 5. a sealing structure; 51. a sealing groove; 52. a sealing strip; 53. a sealing block; 6. a battery protection structure; 61. a battery cover plate; 62. a protection plate; 63. and (5) fixing blocks.

Detailed Description

We will make a further description below with reference to the accompanying drawings on a wireless remote-reading internet-of-things ammeter based on NB-Iot in the present invention.

Referring to fig. 1-4, the wireless remote-reading internet-of-things electricity meter based on NB-Iot of the present embodiment includes a housing 1, a PCB 2, a power module installed on the PCB 2, a metering module connected to the power module, a signal sampling module connected to the metering module, an NB-Iot communication module, an RS485 interface connected to the NB-Iot communication module, and a USIM card module; the shell is characterized in that the shell 1 comprises a bottom shell 3 and a top cover 4, and a sealing structure 5 is arranged on the bottom shell 3; a wiring terminal installation groove 31 is further formed in the bottom shell 3, and a sealing cover 32 is installed on the wiring terminal installation groove 31; the top cover 4 is also movably provided with a battery protection structure 6; the ammeter can realize long-distance wireless communication, intermediate equipment is saved, and cost is reduced; the sealing performance of the shell 1 is improved through the arrangement of the sealing structure 5, the safety is improved, and the potential safety hazard is reduced; through the arrangement of the battery protection structure 6, the battery is convenient to disassemble and assemble, and the battery 22 cannot be taken out by mistake easily.

Further, referring to fig. 1-3, the battery protection structure 6 comprises a battery cover plate 61 movably mounted on the top cover 4 and a protection plate 62, wherein the protection plate 62 is located above the battery cover plate 61; the PCB 2 is also provided with a battery mounting rack 21, the power module comprises a battery 22 which is mounted on the battery mounting rack 21 and electrically connected with the PCB 2, and the position of the battery 22 corresponds to the position of the battery cover plate 61; carry out preliminary fixed to battery 22 through battery apron 61, the joint is passed through to one end and is connected, is convenient for open and close, and setting through guard plate 62 blocks battery apron 61 through guard plate 62, avoids battery apron 61 to be opened easily to lead to battery 22 to be taken out by the mistake or fall out.

Further, as shown in fig. 3, one end of the battery cover plate 61 is movably connected with the top cover 4, and the other end is connected with the top cover 4 in a clamping manner; one end of the protection plate 62 is movably connected with the top cover 4, the other end of the protection plate is provided with a fixing block 63, the top cover 4 is provided with a fixing groove 41 matched with the fixing block 63, and the fixing block 63 is fixedly connected with the fixing groove 41 through screws; one end of the protection plate 62 is movably connected to be opened by taking the connection point as a base point, and the other end of the protection plate is matched with the fixing block 63 and the fixing groove 41 through the arrangement of the fixing block 63 and the fixing groove, and is locked through a screw, so that the installation stability of the battery cover plate 61 and the battery 22 is improved through the fixed installation of the protection plate 62 and the protection plate is not opened by mistake.

Further, referring to fig. 1-2, the sealing structure 5 includes a sealing groove 51 provided on the bottom case 3 and a sealing strip 52 installed in the sealing groove 51; the top cover 4 and the sealing cover 32 are both provided with sealing blocks 53 matched with the sealing grooves 51; the top cover 4 and the sealing cover 32 are matched with the bottom shell 3 through a sealing block 53 and a sealing groove 51 and then fixedly connected through screws; through the arrangement of the sealing groove 51 and the sealing strip 52, the sealing performance of the joints between the top cover 4, the sealing cover 32 and the shell 1 is improved, so that the waterproof effect is improved; through the setting of sealed piece 53, extrude the sealing strip through sealed piece 53 when installation top cap 4 and closing cap 32 to make sealed effect better.

Further, as shown in fig. 2-3, a plurality of slots 34 are further formed in the bottom housing 3, and a locking block 42 adapted to the slots 34 is further formed on the top cover 4 and the sealing cover 32; through the cooperation of draw-in groove 34 and fixture block 42, make top cap 4 and closing cap 32 can tentatively fixed mounting on the drain pan, the later stage of being convenient for is locked through the screw.

Further, as shown in fig. 1, a guide groove 43 is further provided on the top cover 4, and a guide block 33 adapted to the guide groove 43 is provided on the cover 32; through the setting of guide way 43 and guide block 33, play the guide effect to closing cap 32, play the spacing effect of direction when the installation, fix a position when being convenient for fixed.

Further, the PCB 2 is also provided with a communication control module, and the shell 1 is also provided with an antenna connected with the communication control module; an isolation module is arranged on the PCB 2, one end of the isolation module is connected with the RS485 interface, and the other end of the isolation module is connected with the metering module; the metering module and the RS485 interface are separated through the isolation module so as to prevent electromagnetic interference.

Further, a relay and a display module which are connected with the metering module are also arranged on the PCB 2; and displaying the electric parameters and the metering data acquired by the metering module through the display module.

The utility model discloses an installation: referring to fig. 1-3, first, sealing strip 52 is embedded in sealing groove 51, then top cover 4 is mounted on bottom case 3 through the cooperation of sealing block 53 and sealing groove 51 and is connected through the cooperation clamping of clamping block 42 and clamping groove 34, when cover 32 is mounted, positioning and limiting are performed through the cooperation of guide block 33 and guide groove 43, then the top cover is mounted on bottom case 3 through the cooperation of sealing block 53 and sealing groove 51 and is connected through the cooperation clamping of clamping block 42 and clamping groove 34, and finally top cover 4, cover 32 and bottom frame are locked through screws; when the sealing cover 32 needs to be opened and wiring is carried out on the wiring terminal, only the sealing cover 32 needs to be detached; when the battery needs to be replaced, the screws arranged on the fixing block 63 and the fixing groove 41 on the protection plate 62 are firstly removed, then the protection plate 62 is lifted, the battery 55 is taken out of the battery mounting frame 21 and replaced after the battery cover plate 61 is lifted, then the battery cover plate 61 is reset through clamping, and the protection plate 62 is put down and locked through the screws.

The utility model discloses a theory of operation: referring to fig. 4, firstly, a power module provides 3.3V voltage for the metering module and the communication control module, 4V voltage for the NB-IOT communication module, and 12V voltage for the RS845 interface; the metering module samples the electric signal through the signal sampling module to obtain electric parameters such as current, voltage, phase and the like, calculates active power and reactive power, and sends the calculation result to the communication control module and the display module, the communication control module receives data sent by the metering module and sends the data to the NB-IOT communication module, or receives data sent by the NB-IOT communication module and sends the data to the metering module; and wired communication can be carried out with the electric meter based on NB-IOT communication through the RS485 interface.

The scope of the present invention is not limited to the above embodiments and their variations. The present invention is not limited to the above embodiments, and other modifications and substitutions may be made by those skilled in the art.

Claims

1. A wireless remote-reading Internet of things ammeter based on NB-Iot comprises a shell (1), a PCB (printed circuit board) (2), a power module arranged on the PCB (2), a metering module connected with the power module, a signal sampling module connected with the metering module, an NB-IOT communication module, an RS485 interface connected with the NB-IOT communication module and a USIM card module; the device is characterized in that the shell (1) comprises a bottom shell (3) and a top cover (4), and a sealing structure (5) is arranged on the bottom shell (3); a wiring terminal mounting groove (31) is further formed in the bottom shell (3), and a sealing cover (32) is mounted on the wiring terminal mounting groove (31); and the top cover (4) is also movably provided with a battery protection structure (6).

2. The NB-Iot based wireless remote-reading Internet of things electricity meter according to claim 1, characterized in that: the battery protection structure (6) comprises a battery cover plate (61) and a protection plate (62), wherein the battery cover plate (61) and the protection plate (62) are movably arranged on the top cover (4), and the protection plate (62) is positioned above the battery cover plate (61); still be equipped with battery mounting bracket (21) on PCB board (2), power module contain install on battery mounting bracket (21) and with PCB board (2) electric connection's battery (22), battery (22) position is corresponding with battery apron (61) position.

3. The NB-Iot based wireless remote-reading Internet of things electricity meter according to claim 2, characterized in that: one end of the battery cover plate (61) is movably connected with the top cover (4), and the other end of the battery cover plate is connected with the top cover (4) in a clamping manner; guard plate (62) one end and top cap (4) swing joint are equipped with fixed block (63) on the other end, be equipped with on top cap (4) with fixed block (63) looks adaptation fixed slot (41), pass through screw fixed connection between fixed block (63) and fixed slot (41).

4. The NB-Iot based wireless remote-reading Internet of things electricity meter according to claim 1, characterized in that: the sealing structure (5) comprises a sealing groove (51) arranged on the bottom shell (3) and a sealing strip (52) installed in the sealing groove (51); the top cover (4) and the sealing cover (32) are both provided with sealing blocks (53) matched with the sealing grooves (51); the top cover (4) and the sealing cover (32) are matched with the bottom shell (3) through a sealing block (53) and a sealing groove (51) and then fixedly connected through screws.

5. The NB-Iot based wireless remote-reading Internet of things electricity meter according to claim 4, characterized in that: the bottom shell (3) is further provided with a plurality of clamping grooves (34), and the top cover (4) and the sealing cover (32) are further provided with clamping blocks (42) matched with the clamping grooves (34).

6. The NB-Iot based wireless remote-reading Internet of things electricity meter according to claim 4, characterized in that: the top cover (4) is further provided with a guide groove (43), and the sealing cover (32) is provided with a guide block (33) matched with the guide groove (43).

7. The NB-Iot based wireless remote-reading Internet of things electricity meter according to claim 1, characterized in that: the PCB (2) is also provided with a communication control module, and the shell (1) is also provided with an antenna connected with the communication control module; and an isolation module is arranged on the PCB (2), one end of the isolation module is connected with the RS485 interface, and the other end of the isolation module is connected with the metering module.

8. The NB-Iot based wireless remote-reading Internet of things electricity meter according to claim 1, characterized in that: and the PCB (2) is also provided with a relay and a display module which are connected with the metering module.